2015 Q4 Form 10-K Financial Statement
#000000490416000056 Filed on February 24, 2016
Income Statement
| Concept | 2015 Q4 | 2014 Q4 | 2014 Q3 |
|---|---|---|---|
| Revenue | $3.615B | $3.819B | $4.161B |
| YoY Change | -5.35% | 1.22% | -0.35% |
| Cost Of Revenue | $710.0M | $526.0M | $449.0M |
| YoY Change | 34.98% | 35.57% | 20.38% |
| Gross Profit | $2.904B | $3.294B | $3.712B |
| YoY Change | -11.84% | -2.69% | -2.39% |
| Gross Profit Margin | 80.34% | 86.25% | 89.2% |
| Selling, General & Admin | |||
| YoY Change | |||
| % of Gross Profit | |||
| Research & Development | |||
| YoY Change | |||
| % of Gross Profit | |||
| Depreciation & Amortization | $525.1M | $509.8M | $519.0M |
| YoY Change | 3.0% | 10.11% | -5.29% |
| % of Gross Profit | 18.08% | 15.48% | 13.98% |
| Operating Expenses | $2.439B | $2.863B | $3.256B |
| YoY Change | -14.81% | 3.02% | -1.36% |
| Operating Profit | $466.4M | $429.5M | $904.9M |
| YoY Change | 8.59% | -36.65% | 3.42% |
| Interest Expense | -$178.0M | -$187.0M | $217.0M |
| YoY Change | -4.81% | -4.59% | -3.56% |
| % of Operating Profit | -38.16% | -43.54% | 23.98% |
| Other Income/Expense, Net | $6.000M | $11.00M | $7.000M |
| YoY Change | -45.45% | 10.0% | -12.5% |
| Pretax Income | $293.0M | $255.0M | $723.0M |
| YoY Change | 14.9% | -48.17% | 6.32% |
| Income Tax | $93.00M | $120.0M | $264.0M |
| % Of Pretax Income | 31.74% | 47.06% | 36.51% |
| Net Earnings | $470.7M | $191.5M | $494.4M |
| YoY Change | 145.8% | -44.81% | 13.92% |
| Net Earnings / Revenue | 13.02% | 5.01% | 11.88% |
| Basic Earnings Per Share | $0.95 | $0.39 | $1.01 |
| Diluted Earnings Per Share | $0.95 | $0.39 | $1.01 |
| COMMON SHARES | |||
| Basic Shares Outstanding | 491.1M shares | 489.4M shares | 488.9M shares |
| Diluted Shares Outstanding | 489.0M shares |
Balance Sheet
| Concept | 2015 Q4 | 2014 Q4 | 2014 Q3 |
|---|---|---|---|
| SHORT-TERM ASSETS | |||
| Cash & Short-Term Investments | $563.0M | $548.0M | $512.0M |
| YoY Change | 2.74% | 16.35% | 17.7% |
| Cash & Equivalents | $176.4M | $162.5M | $194.0M |
| Short-Term Investments | $387.0M | $386.0M | $318.0M |
| Other Short-Term Assets | $560.0M | $924.0M | $646.0M |
| YoY Change | -39.39% | 29.59% | -13.87% |
| Inventory | $1.339B | $1.317B | $1.205B |
| Prepaid Expenses | |||
| Receivables | $1.641B | $1.835B | $1.855B |
| Other Receivables | $82.00M | $85.00M | $83.00M |
| Total Short-Term Assets | $4.072B | $4.478B | $4.111B |
| YoY Change | -9.06% | 3.9% | -4.77% |
| LONG-TERM ASSETS | |||
| Property, Plant & Equipment | $46.13B | $43.64B | $43.06B |
| YoY Change | 5.72% | 6.43% | 8.01% |
| Goodwill | $52.50M | $91.30M | $91.00M |
| YoY Change | -42.5% | 0.33% | 0.0% |
| Intangibles | |||
| YoY Change | |||
| Long-Term Investments | $720.5M | $648.4M | |
| YoY Change | 11.12% | 13.95% | |
| Other Assets | $2.107B | $2.131B | $1.944B |
| YoY Change | -1.16% | 4.58% | 37.48% |
| Total Long-Term Assets | $11.48B | $11.43B | $10.75B |
| YoY Change | 0.4% | 2.92% | -0.24% |
| TOTAL ASSETS | |||
| Total Short-Term Assets | $4.072B | $4.478B | $4.111B |
| Total Long-Term Assets | $11.48B | $11.43B | $10.75B |
| Total Assets | $61.68B | $59.54B | $57.93B |
| YoY Change | 3.59% | 5.72% | 5.39% |
| SHORT-TERM LIABILITIES | |||
| YoY Change | |||
| Accounts Payable | $1.418B | $1.258B | $1.259B |
| YoY Change | 12.7% | -0.62% | 20.59% |
| Accrued Expenses | $227.0M | $238.0M | $219.0M |
| YoY Change | -4.62% | -2.86% | 0.0% |
| Deferred Revenue | |||
| YoY Change | |||
| Short-Term Debt | $800.0M | $1.346B | $1.282B |
| YoY Change | -40.56% | 77.81% | 5.25% |
| Long-Term Debt Due | $1.832B | $2.500B | $2.381B |
| YoY Change | -26.74% | 61.42% | 74.3% |
| Total Short-Term Liabilities | $7.109B | $7.967B | $7.457B |
| YoY Change | -10.77% | 30.34% | 31.01% |
| LONG-TERM LIABILITIES | |||
| Long-Term Debt | $17.74B | $16.01B | $15.68B |
| YoY Change | 10.8% | -4.85% | -3.24% |
| Other Long-Term Liabilities | $890.6M | $895.8M | $1.119B |
| YoY Change | -0.58% | -7.36% | 25.59% |
| Total Long-Term Liabilities | $36.67B | $34.75B | $33.60B |
| YoY Change | 5.51% | 1.57% | 0.26% |
| TOTAL LIABILITIES | |||
| Total Short-Term Liabilities | $7.109B | $7.967B | $7.457B |
| Total Long-Term Liabilities | $36.67B | $34.75B | $33.60B |
| Total Liabilities | $43.78B | $42.72B | $41.05B |
| YoY Change | 2.48% | 5.93% | 4.73% |
| SHAREHOLDERS EQUITY | |||
| Retained Earnings | $8.398B | $7.407B | $7.470B |
| YoY Change | 13.39% | 9.47% | 12.09% |
| Common Stock | $3.324B | $3.313B | $3.312B |
| YoY Change | 0.32% | 0.31% | 0.39% |
| Preferred Stock | |||
| YoY Change | |||
| Treasury Stock (at cost) | |||
| YoY Change | |||
| Treasury Stock Shares | 20.34M shares | 20.34M shares | 20.34M shares |
| Shareholders Equity | $17.89B | $16.82B | $16.87B |
| YoY Change | |||
| Total Liabilities & Shareholders Equity | $61.68B | $59.54B | $57.93B |
| YoY Change | 3.59% | 5.55% | 5.39% |
Cashflow Statement
| Concept | 2015 Q4 | 2014 Q4 | 2014 Q3 |
|---|---|---|---|
| OPERATING ACTIVITIES | |||
| Net Income | $470.7M | $191.5M | $494.4M |
| YoY Change | 145.8% | -44.81% | 13.92% |
| Depreciation, Depletion And Amortization | $525.1M | $509.8M | $519.0M |
| YoY Change | 3.0% | 10.11% | -5.29% |
| Cash From Operating Activities | $897.7M | $888.5M | $1.528B |
| YoY Change | 1.04% | -16.65% | 0.26% |
| INVESTING ACTIVITIES | |||
| Capital Expenditures | -$1.264B | -$1.240B | -$1.065B |
| YoY Change | 1.92% | 4.48% | 18.99% |
| Acquisitions | |||
| YoY Change | |||
| Other Investing Activities | $494.7M | -$84.80M | $52.00M |
| YoY Change | -683.37% | -23.6% | 188.89% |
| Cash From Investing Activities | -$769.3M | -$1.325B | -$1.013B |
| YoY Change | -41.94% | 2.08% | 15.51% |
| FINANCING ACTIVITIES | |||
| Cash Dividend Paid | |||
| YoY Change | |||
| Common Stock Issuance & Retirement, Net | |||
| YoY Change | |||
| Debt Paid & Issued, Net | |||
| YoY Change | |||
| Cash From Financing Activities | -129.8M | 405.5M | -511.0M |
| YoY Change | -132.01% | 99.75% | -17.18% |
| NET CHANGE | |||
| Cash From Operating Activities | 897.7M | 888.5M | 1.528B |
| Cash From Investing Activities | -769.3M | -1.325B | -1.013B |
| Cash From Financing Activities | -129.8M | 405.5M | -511.0M |
| Net Change In Cash | -1.400M | -31.00M | 4.000M |
| YoY Change | -95.48% | 6.9% | -86.67% |
| FREE CASH FLOW | |||
| Cash From Operating Activities | $897.7M | $888.5M | $1.528B |
| Capital Expenditures | -$1.264B | -$1.240B | -$1.065B |
| Free Cash Flow | $2.162B | $2.129B | $2.593B |
| YoY Change | 1.55% | -5.52% | 7.19% |
Facts In Submission
| Frame | Concept Type | Concept / XBRL Key | Value | Unit |
|---|---|---|---|---|
| CY2014Q4 | aep |
Accounts Receivable Customers
AccountsReceivableCustomers
|
637200000 | USD |
| CY2015Q4 | aep |
Accounts Receivable Customers
AccountsReceivableCustomers
|
615900000 | USD |
| CY2014Q4 | aep |
Accounts Receivable Retained Interest And Pledged As Collateral Less Uncollectible Accounts
AccountsReceivableRetainedInterestAndPledgedAsCollateralLessUncollectibleAccounts
|
974500000 | USD |
| CY2015Q4 | aep |
Accounts Receivable Retained Interest And Pledged As Collateral Less Uncollectible Accounts
AccountsReceivableRetainedInterestAndPledgedAsCollateralLessUncollectibleAccounts
|
924800000 | USD |
| CY2014Q4 | aep |
Accrual For Receipt Of Interest
AccrualForReceiptOfInterest
|
44000000 | USD |
| CY2015Q4 | aep |
Accrual For Receipt Of Interest
AccrualForReceiptOfInterest
|
44700000 | USD |
| CY2013 | aep |
Acquisition Of Nuclear Fuel Included In Current Liabilities
AcquisitionOfNuclearFuelIncludedInCurrentLiabilities
|
0 | USD |
| CY2014 | aep |
Acquisition Of Nuclear Fuel Included In Current Liabilities
AcquisitionOfNuclearFuelIncludedInCurrentLiabilities
|
44500000 | USD |
| CY2015 | aep |
Acquisition Of Nuclear Fuel Included In Current Liabilities
AcquisitionOfNuclearFuelIncludedInCurrentLiabilities
|
37900000 | USD |
| CY2014Q4 | aep |
Adjusted Cost Of Debt Securities
AdjustedCostOfDebtSecurities
|
903000000 | USD |
| CY2015Q4 | aep |
Adjusted Cost Of Debt Securities
AdjustedCostOfDebtSecurities
|
771000000 | USD |
| CY2014Q4 | aep |
Adjusted Cost Of Equity Securities
AdjustedCostOfEquitySecurities
|
524000000 | USD |
| CY2015Q4 | aep |
Adjusted Cost Of Equity Securities
AdjustedCostOfEquitySecurities
|
555000000 | USD |
| CY2014Q4 | aep |
Affiliated Long Term Debt Current
AffiliatedLongTermDebtCurrent
|
0 | USD |
| CY2015Q4 | aep |
Affiliated Long Term Debt Current
AffiliatedLongTermDebtCurrent
|
0 | USD |
| CY2014Q4 | aep |
Affiliated Long Term Debt Noncurrent
AffiliatedLongTermDebtNoncurrent
|
0 | USD |
| CY2015Q4 | aep |
Affiliated Long Term Debt Noncurrent
AffiliatedLongTermDebtNoncurrent
|
0 | USD |
| CY2015Q4 | aep |
Aggregate Power Participation Ratio
AggregatePowerParticipationRatio
|
0.4347 | |
| CY2014Q4 | aep |
All Other Net
AllOtherNet
|
53400000 | USD |
| CY2015Q4 | aep |
All Other Net
AllOtherNet
|
9800000 | USD |
| CY2013 | aep |
Amortization Of Nuclear Fuel
AmortizationOfNuclearFuel
|
130600000 | USD |
| CY2014 | aep |
Amortization Of Nuclear Fuel
AmortizationOfNuclearFuel
|
144200000 | USD |
| CY2015 | aep |
Amortization Of Nuclear Fuel
AmortizationOfNuclearFuel
|
145000000 | USD |
| CY2013 | aep |
Amortizationof Certain Securitized Assets
AmortizationofCertainSecuritizedAssets
|
248200000 | USD |
| CY2014 | aep |
Amortizationof Certain Securitized Assets
AmortizationofCertainSecuritizedAssets
|
310400000 | USD |
| CY2015 | aep |
Amortizationof Certain Securitized Assets
AmortizationofCertainSecuritizedAssets
|
318900000 | USD |
| CY2013 | aep |
Amortizationof Regulatory Assetsand Liabilities
AmortizationofRegulatoryAssetsandLiabilities
|
22900000 | USD |
| CY2014 | aep |
Amortizationof Regulatory Assetsand Liabilities
AmortizationofRegulatoryAssetsandLiabilities
|
13500000 | USD |
| CY2015 | aep |
Amortizationof Regulatory Assetsand Liabilities
AmortizationofRegulatoryAssetsandLiabilities
|
16500000 | USD |
| CY2014Q4 | aep |
Amount Attributable To Rto And Iso Activities
AmountAttributableToRtoAndIsoActivities
|
36000000 | USD |
| CY2015Q4 | aep |
Amount Attributable To Rto And Iso Activities
AmountAttributableToRtoAndIsoActivities
|
17500000 | USD |
| CY2014Q4 | aep |
Amount Attributableto Other Contracts
AmountAttributabletoOtherContracts
|
280600000 | USD |
| CY2015Q4 | aep |
Amount Attributableto Other Contracts
AmountAttributabletoOtherContracts
|
297800000 | USD |
| CY2014Q4 | aep |
Amounts Due From Customers For Future Federal Income Taxes
AmountsDueFromCustomersForFutureFederalIncomeTaxes
|
255200000 | USD |
| CY2015Q4 | aep |
Amounts Due From Customers For Future Federal Income Taxes
AmountsDueFromCustomersForFutureFederalIncomeTaxes
|
263500000 | USD |
| CY2015 | aep |
Anticipated Tx Income Franchise Tax Rate
AnticipatedTXIncomeFranchiseTaxRate
|
0.01 | |
| CY2015 | aep |
Asset Retirement Obligations Significant Change
AssetRetirementObligationsSignificantChange
|
95000000 | USD |
| CY2015Q4 | aep |
Auction Rate Tax Exempt Long Term Debt Outstanding
AuctionRateTaxExemptLongTermDebtOutstanding
|
554000000 | USD |
| CY2014Q4 | aep |
Bad Debt Reserves Related To Securitized Sale Of Accounts Receivable
BadDebtReservesRelatedToSecuritizedSaleOfAccountsReceivable
|
12900000 | USD |
| CY2015Q4 | aep |
Bad Debt Reserves Related To Securitized Sale Of Accounts Receivable
BadDebtReservesRelatedToSecuritizedSaleOfAccountsReceivable
|
17500000 | USD |
| CY2013 | aep |
Carrying Costs Income
CarryingCostsIncome
|
30200000 | USD |
| CY2014 | aep |
Carrying Costs Income
CarryingCostsIncome
|
33200000 | USD |
| CY2015 | aep |
Carrying Costs Income
CarryingCostsIncome
|
23500000 | USD |
| CY2013 | aep |
Change In Other Temporary Investments Net
ChangeInOtherTemporaryInvestmentsNet
|
11200000 | USD |
| CY2014 | aep |
Change In Other Temporary Investments Net
ChangeInOtherTemporaryInvestmentsNet
|
31100000 | USD |
| CY2015 | aep |
Change In Other Temporary Investments Net
ChangeInOtherTemporaryInvestmentsNet
|
-9600000 | USD |
| CY2013 | aep |
Changes In Fair Value Allocated To Regulated Jurisdiction
ChangesInFairValueAllocatedToRegulatedJurisdiction
|
7100000 | USD |
| CY2014 | aep |
Changes In Fair Value Allocated To Regulated Jurisdiction
ChangesInFairValueAllocatedToRegulatedJurisdiction
|
74300000 | USD |
| CY2015 | aep |
Changes In Fair Value Allocated To Regulated Jurisdiction
ChangesInFairValueAllocatedToRegulatedJurisdiction
|
-13000000 | USD |
| CY2015Q4 | aep |
Credit Facilities Structured
CreditFacilitiesStructured
|
3500000000 | USD |
| CY2013 | aep |
Deferral Of Ohio Capacity Costs
DeferralOfOhioCapacityCosts
|
-214400000 | USD |
| CY2014 | aep |
Deferral Of Ohio Capacity Costs
DeferralOfOhioCapacityCosts
|
-113500000 | USD |
| CY2015 | aep |
Deferral Of Ohio Capacity Costs
DeferralOfOhioCapacityCosts
|
65500000 | USD |
| CY2014Q4 | aep |
Deferred State Income Taxes
DeferredStateIncomeTaxes
|
796900000 | USD |
| CY2015Q4 | aep |
Deferred State Income Taxes
DeferredStateIncomeTaxes
|
872000000 | USD |
| CY2014Q4 | aep |
Deferred Tax Assets Liabilities Net Property Related Temporary Differences
DeferredTaxAssetsLiabilitiesNetPropertyRelatedTemporaryDifferences
|
7883400000 | USD |
| CY2015Q4 | aep |
Deferred Tax Assets Liabilities Net Property Related Temporary Differences
DeferredTaxAssetsLiabilitiesNetPropertyRelatedTemporaryDifferences
|
8533300000 | USD |
| CY2014Q4 | aep |
Deferred Tax Assets Liabilities Securitized Transition Assets
DeferredTaxAssetsLiabilitiesSecuritizedTransitionAssets
|
753200000 | USD |
| CY2015Q4 | aep |
Deferred Tax Assets Liabilities Securitized Transition Assets
DeferredTaxAssetsLiabilitiesSecuritizedTransitionAssets
|
633200000 | USD |
| CY2014Q4 | aep |
Disposal Group Including Discontinued Operation Longterm Debt
DisposalGroupIncludingDiscontinuedOperationLongtermDebt
|
83000000 | USD |
| CY2014Q4 | aep |
Disposal Group Including Discontinued Operation Longterm Debt
DisposalGroupIncludingDiscontinuedOperationLongtermDebt
|
83200000 | USD |
| CY2014Q4 | aep |
Disposal Group Including Discontinued Operation Longterm Debt Fair Value
DisposalGroupIncludingDiscontinuedOperationLongtermDebtFairValue
|
114000000 | USD |
| CY2014Q4 | aep |
Disposal Group Including Discontinued Operation Obligations Under Capital Leases
DisposalGroupIncludingDiscontinuedOperationObligationsUnderCapitalLeases
|
189000000 | USD |
| CY2013 | aep |
Disposal Group Including Discontinued Operation Total Lease Expenses
DisposalGroupIncludingDiscontinuedOperationTotalLeaseExpenses
|
103000000 | USD |
| CY2014 | aep |
Disposal Group Including Discontinued Operation Total Lease Expenses
DisposalGroupIncludingDiscontinuedOperationTotalLeaseExpenses
|
96000000 | USD |
| CY2015 | aep |
Disposal Group Including Discontinued Operation Total Lease Expenses
DisposalGroupIncludingDiscontinuedOperationTotalLeaseExpenses
|
89000000 | USD |
| CY2015Q4 | aep |
Dividend Payment Restrictions
DividendPaymentRestrictions
|
8100000000 | USD |
| CY2013 | aep |
Effective Interest Rates On Securitization Of Accounts Receivable
EffectiveInterestRatesOnSecuritizationOfAccountsReceivable
|
0.0023 | |
| CY2014 | aep |
Effective Interest Rates On Securitization Of Accounts Receivable
EffectiveInterestRatesOnSecuritizationOfAccountsReceivable
|
0.0022 | |
| CY2015 | aep |
Effective Interest Rates On Securitization Of Accounts Receivable
EffectiveInterestRatesOnSecuritizationOfAccountsReceivable
|
0.003 | |
| CY2015 | aep |
Eligible Compensation Contribution By Employee Percentage
EligibleCompensationContributionByEmployeePercentage
|
0.01 | |
| CY2014Q4 | aep |
Employee Benefits And Pension Obligations
EmployeeBenefitsAndPensionObligations
|
629500000 | USD |
| CY2015Q4 | aep |
Employee Benefits And Pension Obligations
EmployeeBenefitsAndPensionObligations
|
583300000 | USD |
| CY2013 | aep |
Expected Reimbursement For Spent Nuclear Fuel Dry Cask Storage
ExpectedReimbursementForSpentNuclearFuelDryCaskStorage
|
4400000 | USD |
| CY2014 | aep |
Expected Reimbursement For Spent Nuclear Fuel Dry Cask Storage
ExpectedReimbursementForSpentNuclearFuelDryCaskStorage
|
3400000 | USD |
| CY2015 | aep |
Expected Reimbursement For Spent Nuclear Fuel Dry Cask Storage
ExpectedReimbursementForSpentNuclearFuelDryCaskStorage
|
2200000 | USD |
| CY2014Q4 | aep |
Fair Value Of Derivative Liabilities Subject To Cross Default Provisions
FairValueOfDerivativeLiabilitiesSubjectToCrossDefaultProvisions
|
235200000 | USD |
| CY2015Q4 | aep |
Fair Value Of Derivative Liabilities Subject To Cross Default Provisions
FairValueOfDerivativeLiabilitiesSubjectToCrossDefaultProvisions
|
300100000 | USD |
| CY2011 | aep |
Federal Net Income Tax Operating Loss
FederalNetIncomeTaxOperatingLoss
|
226000000 | USD |
| CY2012 | aep |
Federal Net Income Tax Operating Loss
FederalNetIncomeTaxOperatingLoss
|
366000000 | USD |
| CY2013 | aep |
Fuel Over Under Recovery Net
FuelOverUnderRecoveryNet
|
-62000000 | USD |
| CY2014 | aep |
Fuel Over Under Recovery Net
FuelOverUnderRecoveryNet
|
35500000 | USD |
| CY2015 | aep |
Fuel Over Under Recovery Net
FuelOverUnderRecoveryNet
|
-137800000 | USD |
| CY2013 | aep |
Gain Loss On Fair Value Portion Of Long Term Debt
GainLossOnFairValuePortionOfLongTermDebt
|
10400000 | USD |
| CY2014 | aep |
Gain Loss On Fair Value Portion Of Long Term Debt
GainLossOnFairValuePortionOfLongTermDebt
|
-3900000 | USD |
| CY2015 | aep |
Gain Loss On Fair Value Portion Of Long Term Debt
GainLossOnFairValuePortionOfLongTermDebt
|
-3300000 | USD |
| CY2014Q4 | aep |
Generation Property Plant And Equipment Under Capital Leases
GenerationPropertyPlantAndEquipmentUnderCapitalLeases
|
104400000 | USD |
| CY2015Q4 | aep |
Generation Property Plant And Equipment Under Capital Leases
GenerationPropertyPlantAndEquipmentUnderCapitalLeases
|
128200000 | USD |
| CY2013 | aep |
Gross Realized Gains On Investment Sales
GrossRealizedGainsOnInvestmentSales
|
18300000 | USD |
| CY2014 | aep |
Gross Realized Gains On Investment Sales
GrossRealizedGainsOnInvestmentSales
|
32300000 | USD |
| CY2015 | aep |
Gross Realized Gains On Investment Sales
GrossRealizedGainsOnInvestmentSales
|
69100000 | USD |
| CY2013 | aep |
Gross Realized Gains On Investment Sales On Short Term Investment
GrossRealizedGainsOnInvestmentSalesOnShortTermInvestment
|
0 | USD |
| CY2014 | aep |
Gross Realized Gains On Investment Sales On Short Term Investment
GrossRealizedGainsOnInvestmentSalesOnShortTermInvestment
|
0 | USD |
| CY2015 | aep |
Gross Realized Gains On Investment Sales On Short Term Investment
GrossRealizedGainsOnInvestmentSalesOnShortTermInvestment
|
0 | USD |
| CY2013 | aep |
Gross Realized Losses On Investment Sales
GrossRealizedLossesOnInvestmentSales
|
8100000 | USD |
| CY2014 | aep |
Gross Realized Losses On Investment Sales
GrossRealizedLossesOnInvestmentSales
|
15400000 | USD |
| CY2015 | aep |
Gross Realized Losses On Investment Sales
GrossRealizedLossesOnInvestmentSales
|
53000000 | USD |
| CY2013 | aep |
Gross Realized Losses On Investment Sales On Short Term Investment
GrossRealizedLossesOnInvestmentSalesOnShortTermInvestment
|
0 | USD |
| CY2014 | aep |
Gross Realized Losses On Investment Sales On Short Term Investment
GrossRealizedLossesOnInvestmentSalesOnShortTermInvestment
|
0 | USD |
| CY2015 | aep |
Gross Realized Losses On Investment Sales On Short Term Investment
GrossRealizedLossesOnInvestmentSalesOnShortTermInvestment
|
0 | USD |
| CY2014Q4 | aep |
Gross Unrealized Gains
GrossUnrealizedGains
|
649100000 | USD |
| CY2015Q4 | aep |
Gross Unrealized Gains
GrossUnrealizedGains
|
611800000 | USD |
| CY2013 | aep |
Income Tax Examination Interest Expense Interest Income
IncomeTaxExaminationInterestExpenseInterestIncome
|
51800000 | USD |
| CY2014 | aep |
Income Tax Examination Interest Expense Interest Income
IncomeTaxExaminationInterestExpenseInterestIncome
|
1200000 | USD |
| CY2015 | aep |
Income Tax Examination Interest Expense Interest Income
IncomeTaxExaminationInterestExpenseInterestIncome
|
800000 | USD |
| CY2013 | aep |
Income Tax Reconciliation Uk Windfall Tax
IncomeTaxReconciliationUKWindfallTax
|
79500000 | USD |
| CY2014 | aep |
Income Tax Reconciliation Uk Windfall Tax
IncomeTaxReconciliationUKWindfallTax
|
0 | USD |
| CY2015 | aep |
Income Tax Reconciliation Uk Windfall Tax
IncomeTaxReconciliationUKWindfallTax
|
0 | USD |
| CY2013 | aep |
Increase Decrease In Income Taxes Afudc
IncreaseDecreaseInIncomeTaxesAfudc
|
-30500000 | USD |
| CY2014 | aep |
Increase Decrease In Income Taxes Afudc
IncreaseDecreaseInIncomeTaxesAfudc
|
-41800000 | USD |
| CY2015 | aep |
Increase Decrease In Income Taxes Afudc
IncreaseDecreaseInIncomeTaxesAfudc
|
-51600000 | USD |
| CY2013 | aep |
Increase Decrease In Income Taxes Due To Removal Costs
IncreaseDecreaseInIncomeTaxesDueToRemovalCosts
|
-20900000 | USD |
| CY2014 | aep |
Increase Decrease In Income Taxes Due To Removal Costs
IncreaseDecreaseInIncomeTaxesDueToRemovalCosts
|
-23900000 | USD |
| CY2015 | aep |
Increase Decrease In Income Taxes Due To Removal Costs
IncreaseDecreaseInIncomeTaxesDueToRemovalCosts
|
-28800000 | USD |
| CY2013 | aep |
Make Whole Premiumon Extinguishmentof Longterm Debt
MakeWholePremiumonExtinguishmentofLongtermDebt
|
0 | USD |
| CY2014 | aep |
Make Whole Premiumon Extinguishmentof Longterm Debt
MakeWholePremiumonExtinguishmentofLongtermDebt
|
0 | USD |
| CY2015 | aep |
Make Whole Premiumon Extinguishmentof Longterm Debt
MakeWholePremiumonExtinguishmentofLongtermDebt
|
92700000 | USD |
| CY2015 | aep |
Matching Contributions Provided Percentage
MatchingContributionsProvidedPercentage
|
1 | |
| CY2015Q4 | aep |
Max Potential Loss On Master Lease Agreements
MaxPotentialLossOnMasterLeaseAgreements
|
33400000 | USD |
| CY2015 | aep |
Maximum Lease Term
MaximumLeaseTerm
|
P34Y | |
| CY2015 | aep |
Maximum Percentage Debt To Capitalization
MaximumPercentageDebtToCapitalization
|
0.675 | |
| CY2014Q4 | aep |
Multiemployer Plan Surcharge
MultiemployerPlanSurcharge
|
0.05 | |
| CY2015Q4 | aep |
Multiemployer Plan Surcharge
MultiemployerPlanSurcharge
|
0.10 | |
| CY2013 | aep |
Net Uncollectible Accounts Receivable Written Off
NetUncollectibleAccountsReceivableWrittenOff
|
34900000 | USD |
| CY2014 | aep |
Net Uncollectible Accounts Receivable Written Off
NetUncollectibleAccountsReceivableWrittenOff
|
40100000 | USD |
| CY2015 | aep |
Net Uncollectible Accounts Receivable Written Off
NetUncollectibleAccountsReceivableWrittenOff
|
34100000 | USD |
| CY2015 | aep |
New Tx Income Franchise Tax Rate
NewTXIncomeFranchiseTaxRate
|
0.0075 | |
| CY2015 | aep |
Original Corporate Income Tax Rate
OriginalCorporateIncomeTaxRate
|
0.085 | |
| CY2013 | aep |
Other Comprehensive Income Unrealized Gain Loss Arising During Period Net Of Tax
OtherComprehensiveIncomeUnrealizedGainLossArisingDuringPeriodNetOfTax
|
192200000 | USD |
| CY2014 | aep |
Other Comprehensive Income Unrealized Gain Loss Arising During Period Net Of Tax
OtherComprehensiveIncomeUnrealizedGainLossArisingDuringPeriodNetOfTax
|
-7800000 | USD |
| CY2015 | aep |
Other Comprehensive Income Unrealized Gain Loss Arising During Period Net Of Tax
OtherComprehensiveIncomeUnrealizedGainLossArisingDuringPeriodNetOfTax
|
-20700000 | USD |
| CY2013 | aep |
Pension And Opeb Adjustment Related To Mitchell Plant
PensionAndOpebAdjustmentRelatedToMitchellPlant
|
5200000 | USD |
| CY2015 | aep |
Pension And Opeb Adjustment Related To Mitchell Plant
PensionAndOpebAdjustmentRelatedToMitchellPlant
|
6000000 | USD |
| CY2015 | aep |
Percentage Of Ownership In Subsidiary
PercentageOfOwnershipInSubsidiary
|
1.00 | |
| CY2015 | aep |
Period With No Receipt Of Cash Expected
PeriodWithNoReceiptOfCashExpected
|
P12M | |
| CY2015 | aep |
Periodwith No Changein Unrecognized Tax Benefits
PeriodwithNoChangeinUnrecognizedTaxBenefits
|
P12M | |
| CY2015 | aep |
Pre2016 Tx Income Franchise Tax Rate
Pre2016TXIncomeFranchiseTaxRate
|
0.0095 | |
| CY2013 | aep |
Proceeds From Investment Sales
ProceedsFromInvestmentSales
|
858400000 | USD |
| CY2014 | aep |
Proceeds From Investment Sales
ProceedsFromInvestmentSales
|
1031800000 | USD |
| CY2015 | aep |
Proceeds From Investment Sales
ProceedsFromInvestmentSales
|
2218400000 | USD |
| CY2013 | aep |
Purchases Of Investments
PurchasesOfInvestments
|
910000000 | USD |
| CY2014 | aep |
Purchases Of Investments
PurchasesOfInvestments
|
1086400000 | USD |
| CY2015 | aep |
Purchases Of Investments
PurchasesOfInvestments
|
2272000000 | USD |
| CY2014Q4 | aep |
Rate Matters
RateMatters
|
USD | |
| CY2015Q4 | aep |
Rate Matters
RateMatters
|
USD | |
| CY2015Q4 | aep |
Recorded Unconditional Purchase Obligation Due Within Four To Five Year
RecordedUnconditionalPurchaseObligationDueWithinFourToFiveYear
|
2160700000 | USD |
| CY2015Q4 | aep |
Recorded Unconditional Purchase Obligation Due Within Two To Three Year
RecordedUnconditionalPurchaseObligationDueWithinTwoToThreeYear
|
2874200000 | USD |
| CY2015 | aep |
Reduced Corporate Income Tax Rate
ReducedCorporateIncomeTaxRate
|
0.065 | |
| CY2014 | aep |
Reduction In Income Tax New Rate
ReductionInIncomeTaxNewRate
|
0.065 | |
| CY2014 | aep |
Reduction In Income Tax Original Rate
ReductionInIncomeTaxOriginalRate
|
0.07 | |
| CY2015 | aep |
Reduction In Indiana Corporate Tax Rate
ReductionInIndianaCorporateTaxRate
|
0.005 | |
| CY2015Q4 | aep |
Reductionin Aggregate Common Shares Authorized Per Share Issued Pursuantto Stock Optionsor Stock Appreciation Rights
ReductioninAggregateCommonSharesAuthorizedPerShareIssuedPursuanttoStockOptionsorStockAppreciationRights
|
0.286 | shares |
| CY2013 | aep |
Reversal Of Prior Period Interest Expense
ReversalOfPriorPeriodInterestExpense
|
0 | USD |
| CY2014 | aep |
Reversal Of Prior Period Interest Expense
ReversalOfPriorPeriodInterestExpense
|
2000000 | USD |
| CY2015 | aep |
Reversal Of Prior Period Interest Expense
ReversalOfPriorPeriodInterestExpense
|
0 | USD |
| CY2015 | aep |
Second Eligible Compensation Contribution By Employee Percentage
SecondEligibleCompensationContributionByEmployeePercentage
|
0.05 | |
| CY2015 | aep |
Second Matching Contributions Provided Percentage
SecondMatchingContributionsProvidedPercentage
|
0.7 | |
| CY2014Q4 | aep |
Spent Nuclear Fuel And Decommissioning Trusts
SpentNuclearFuelAndDecommissioningTrusts
|
2095700000 | USD |
| CY2015Q4 | aep |
Spent Nuclear Fuel And Decommissioning Trusts
SpentNuclearFuelAndDecommissioningTrusts
|
2106400000 | USD |
| CY2014Q4 | aep |
Temporary Impairments
TemporaryImpairments
|
85500000 | USD |
| CY2015Q4 | aep |
Temporary Impairments
TemporaryImpairments
|
83300000 | USD |
| CY2014Q4 | aep |
Total Commitment From Bank Conduits To Finance Receivables
TotalCommitmentFromBankConduitsToFinanceReceivables
|
700000000 | USD |
| CY2015Q4 | aep |
Total Commitment From Bank Conduits To Finance Receivables
TotalCommitmentFromBankConduitsToFinanceReceivables
|
750000000 | USD |
| CY2013 | aep |
Total Lease Rental Costs
TotalLeaseRentalCosts
|
428800000 | USD |
| CY2014 | aep |
Total Lease Rental Costs
TotalLeaseRentalCosts
|
439400000 | USD |
| CY2015 | aep |
Total Lease Rental Costs
TotalLeaseRentalCosts
|
426200000 | USD |
| CY2013 | aep |
Transfer Of Op Co Generation To Parent
TransferOfOPCoGenerationToParent
|
0 | USD |
| CY2015 | aep |
Unamortized Discount Net And Debt Issuance Costs
UnamortizedDiscountNetAndDebtIssuanceCosts
|
-119400000 | USD |
| CY2014Q4 | aep |
Unbilled Receivables Related To Securitization Sale Of Accounts Receivable
UnbilledReceivablesRelatedToSecuritizationSaleOfAccountsReceivable
|
335400000 | USD |
| CY2014 | us-gaap |
Asset Retirement Obligation Liabilities Settled
AssetRetirementObligationLiabilitiesSettled
|
34200000 | USD |
| CY2015 | us-gaap |
Asset Retirement Obligation Liabilities Settled
AssetRetirementObligationLiabilitiesSettled
|
147200000 | USD |
| CY2014 | us-gaap |
Asset Retirement Obligation Revision Of Estimate
AssetRetirementObligationRevisionOfEstimate
|
81000000 | USD |
| CY2015 | us-gaap |
Asset Retirement Obligation Revision Of Estimate
AssetRetirementObligationRevisionOfEstimate
|
-115500000 | USD |
| CY2014Q4 | us-gaap |
Asset Retirement Obligations Noncurrent
AssetRetirementObligationsNoncurrent
|
1950700000 | USD |
| CY2015Q4 | us-gaap |
Asset Retirement Obligations Noncurrent
AssetRetirementObligationsNoncurrent
|
1806500000 | USD |
| CY2015 | us-gaap |
Asset Retirement Obligation Accretion Expense
AssetRetirementObligationAccretionExpense
|
101400000 | USD |
| CY2014 | us-gaap |
Asset Retirement Obligation Liabilities Incurred
AssetRetirementObligationLiabilitiesIncurred
|
42800000 | USD |
| CY2015 | us-gaap |
Asset Retirement Obligation Liabilities Incurred
AssetRetirementObligationLiabilitiesIncurred
|
58000000 | USD |
| CY2015 | dei |
Entity Central Index Key
EntityCentralIndexKey
|
0000004904 | |
| CY2015 | dei |
Amendment Flag
AmendmentFlag
|
false | |
| CY2015 | dei |
Current Fiscal Year End Date
CurrentFiscalYearEndDate
|
--12-31 | |
| CY2015 | dei |
Document Fiscal Period Focus
DocumentFiscalPeriodFocus
|
FY | |
| CY2015 | dei |
Document Fiscal Year Focus
DocumentFiscalYearFocus
|
2015 | |
| CY2015 | dei |
Document Period End Date
DocumentPeriodEndDate
|
2015-12-31 | |
| CY2015 | dei |
Document Type
DocumentType
|
10-K | |
| CY2015Q4 | aep |
Unbilled Receivables Related To Securitization Sale Of Accounts Receivable
UnbilledReceivablesRelatedToSecuritizationSaleOfAccountsReceivable
|
357800000 | USD |
| CY2015Q4 | aep |
Valuation Allowance Excess Tax Basis Of Stock Over Book Value
ValuationAllowanceExcessTaxBasisOfStockOverBookValue
|
156000000 | USD |
| CY2015Q4 | aep |
Valuation Allowance Expiration Of Charitable Contribution Carryforward Deductions
ValuationAllowanceExpirationOfCharitableContributionCarryforwardDeductions
|
17000000 | USD |
| CY2015Q4 | aep |
Valuation Allowance Realized Capital Losses From Sale
ValuationAllowanceRealizedCapitalLossesFromSale
|
48000000 | USD |
| CY2015Q4 | dei |
Entity Common Stock Shares Outstanding
EntityCommonStockSharesOutstanding
|
491052581 | shares |
| CY2015 | dei |
Entity Current Reporting Status
EntityCurrentReportingStatus
|
Yes | |
| CY2015 | dei |
Entity Filer Category
EntityFilerCategory
|
Large Accelerated Filer | |
| CY2015Q4 | dei |
Entity Public Float
EntityPublicFloat
|
26011055215 | USD |
| CY2015 | dei |
Entity Registrant Name
EntityRegistrantName
|
AMERICAN ELECTRIC POWER CO INC | |
| CY2015 | dei |
Entity Voluntary Filers
EntityVoluntaryFilers
|
No | |
| CY2015 | dei |
Entity Well Known Seasoned Issuer
EntityWellKnownSeasonedIssuer
|
Yes | |
| CY2014Q4 | us-gaap |
Accounts Payable Current
AccountsPayableCurrent
|
1258200000 | USD |
| CY2015Q4 | us-gaap |
Accounts Payable Current
AccountsPayableCurrent
|
1418000000 | USD |
| CY2014Q4 | us-gaap |
Accounts Receivable Net Current
AccountsReceivableNetCurrent
|
1835200000 | USD |
| CY2015Q4 | us-gaap |
Accounts Receivable Net Current
AccountsReceivableNetCurrent
|
1640500000 | USD |
| CY2014Q4 | us-gaap |
Accumulated Depreciation Depletion And Amortization Property Plant And Equipment
AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
|
19970800000 | USD |
| CY2015Q4 | us-gaap |
Accumulated Depreciation Depletion And Amortization Property Plant And Equipment
AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
|
19348200000 | USD |
| CY2012Q4 | us-gaap |
Accumulated Other Comprehensive Income Loss Net Of Tax
AccumulatedOtherComprehensiveIncomeLossNetOfTax
|
-337000000 | USD |
| CY2013Q4 | us-gaap |
Accumulated Other Comprehensive Income Loss Net Of Tax
AccumulatedOtherComprehensiveIncomeLossNetOfTax
|
-115200000 | USD |
| CY2014Q4 | us-gaap |
Accumulated Other Comprehensive Income Loss Net Of Tax
AccumulatedOtherComprehensiveIncomeLossNetOfTax
|
-103100000 | USD |
| CY2015Q4 | us-gaap |
Accumulated Other Comprehensive Income Loss Net Of Tax
AccumulatedOtherComprehensiveIncomeLossNetOfTax
|
-127100000 | USD |
| CY2014Q4 | us-gaap |
Additional Collateral Aggregate Fair Value
AdditionalCollateralAggregateFairValue
|
0 | USD |
| CY2015Q4 | us-gaap |
Additional Collateral Aggregate Fair Value
AdditionalCollateralAggregateFairValue
|
0 | USD |
| CY2014Q4 | us-gaap |
Additional Paid In Capital
AdditionalPaidInCapital
|
6203400000 | USD |
| CY2015Q4 | us-gaap |
Additional Paid In Capital
AdditionalPaidInCapital
|
6296500000 | USD |
| CY2014Q4 | us-gaap |
Allowance For Doubtful Accounts Receivable Current
AllowanceForDoubtfulAccountsReceivableCurrent
|
20800000 | USD |
| CY2015Q4 | us-gaap |
Allowance For Doubtful Accounts Receivable Current
AllowanceForDoubtfulAccountsReceivableCurrent
|
29000000 | USD |
| CY2013 | us-gaap |
Amortization Of Deferred Property Taxes
AmortizationOfDeferredPropertyTaxes
|
-35400000 | USD |
| CY2014 | us-gaap |
Amortization Of Deferred Property Taxes
AmortizationOfDeferredPropertyTaxes
|
-41800000 | USD |
| CY2015 | us-gaap |
Amortization Of Deferred Property Taxes
AmortizationOfDeferredPropertyTaxes
|
-52400000 | USD |
| CY2013 | us-gaap |
Amortization Of Intangible Assets
AmortizationOfIntangibleAssets
|
14000000 | USD |
| CY2014 | us-gaap |
Amortization Of Intangible Assets
AmortizationOfIntangibleAssets
|
5000000 | USD |
| CY2015 | us-gaap |
Amortization Of Intangible Assets
AmortizationOfIntangibleAssets
|
3000000 | USD |
| CY2013 | us-gaap |
Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount
AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
|
0 | shares |
| CY2014 | us-gaap |
Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount
AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
|
0 | shares |
| CY2015 | us-gaap |
Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount
AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
|
0 | shares |
| CY2013Q4 | us-gaap |
Asset Retirement Obligation
AssetRetirementObligation
|
1835000000 | USD |
| CY2014Q4 | us-gaap |
Asset Retirement Obligation
AssetRetirementObligation
|
2019600000 | USD |
| CY2015Q4 | us-gaap |
Asset Retirement Obligation
AssetRetirementObligation
|
1916300000 | USD |
| CY2014 | us-gaap |
Asset Retirement Obligation Accretion Expense
AssetRetirementObligationAccretionExpense
|
95000000 | USD |
| CY2013Q4 | us-gaap |
Assets
Assets
|
56321000000 | USD |
| CY2014Q4 | us-gaap |
Assets
Assets
|
59544600000 | USD |
| CY2015Q4 | us-gaap |
Assets
Assets
|
61683100000 | USD |
| CY2014Q4 | us-gaap |
Assets Current
AssetsCurrent
|
4478100000 | USD |
| CY2015Q4 | us-gaap |
Assets Current
AssetsCurrent
|
4072400000 | USD |
| CY2014Q4 | us-gaap |
Assets Fair Value Disclosure
AssetsFairValueDisclosure
|
3115900000 | USD |
| CY2015Q4 | us-gaap |
Assets Fair Value Disclosure
AssetsFairValueDisclosure
|
3125800000 | USD |
| CY2014Q4 | us-gaap |
Assets Needed For Immediate Settlement Aggregate Fair Value
AssetsNeededForImmediateSettlementAggregateFairValue
|
178200000 | USD |
| CY2015Q4 | us-gaap |
Assets Needed For Immediate Settlement Aggregate Fair Value
AssetsNeededForImmediateSettlementAggregateFairValue
|
240600000 | USD |
| CY2014Q4 | us-gaap |
Assets Noncurrent
AssetsNoncurrent
|
11431400000 | USD |
| CY2015Q4 | us-gaap |
Assets Noncurrent
AssetsNoncurrent
|
11477500000 | USD |
| CY2014Q4 | us-gaap |
Assets Of Disposal Group Including Discontinued Operation
AssetsOfDisposalGroupIncludingDiscontinuedOperation
|
624900000 | USD |
| CY2014Q4 | us-gaap |
Assets Of Disposal Group Including Discontinued Operation Current
AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrent
|
103300000 | USD |
| CY2015Q4 | us-gaap |
Assets Of Disposal Group Including Discontinued Operation Current
AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrent
|
0 | USD |
| CY2013 | us-gaap |
Capital Expenditures Incurred But Not Yet Paid
CapitalExpendituresIncurredButNotYetPaid
|
0 | USD |
| CY2014 | us-gaap |
Capital Expenditures Incurred But Not Yet Paid
CapitalExpendituresIncurredButNotYetPaid
|
0 | USD |
| CY2015 | us-gaap |
Capital Expenditures Incurred But Not Yet Paid
CapitalExpendituresIncurredButNotYetPaid
|
51600000 | USD |
| CY2014Q4 | us-gaap |
Capital Lease Obligations
CapitalLeaseObligations
|
551800000 | USD |
| CY2015Q4 | us-gaap |
Capital Lease Obligations
CapitalLeaseObligations
|
343500000 | USD |
| CY2014Q4 | us-gaap |
Capital Lease Obligations Current
CapitalLeaseObligationsCurrent
|
111400000 | USD |
| CY2015Q4 | us-gaap |
Capital Lease Obligations Current
CapitalLeaseObligationsCurrent
|
96200000 | USD |
| CY2013 | us-gaap |
Capital Lease Obligations Incurred
CapitalLeaseObligationsIncurred
|
181600000 | USD |
| CY2014 | us-gaap |
Capital Lease Obligations Incurred
CapitalLeaseObligationsIncurred
|
135100000 | USD |
| CY2015 | us-gaap |
Capital Lease Obligations Incurred
CapitalLeaseObligationsIncurred
|
150200000 | USD |
| CY2014Q4 | us-gaap |
Capital Lease Obligations Noncurrent
CapitalLeaseObligationsNoncurrent
|
440400000 | USD |
| CY2015Q4 | us-gaap |
Capital Lease Obligations Noncurrent
CapitalLeaseObligationsNoncurrent
|
247300000 | USD |
| CY2014Q4 | us-gaap |
Capital Leased Assets Gross
CapitalLeasedAssetsGross
|
787400000 | USD |
| CY2015Q4 | us-gaap |
Capital Leased Assets Gross
CapitalLeasedAssetsGross
|
567500000 | USD |
| CY2014Q4 | us-gaap |
Capital Leases Balance Sheet Assets By Major Class Net
CapitalLeasesBalanceSheetAssetsByMajorClassNet
|
547400000 | USD |
| CY2015Q4 | us-gaap |
Capital Leases Balance Sheet Assets By Major Class Net
CapitalLeasesBalanceSheetAssetsByMajorClassNet
|
353400000 | USD |
| CY2015Q4 | us-gaap |
Capital Leases Future Minimum Payments Due
CapitalLeasesFutureMinimumPaymentsDue
|
421100000 | USD |
| CY2015Q4 | us-gaap |
Capital Leases Future Minimum Payments Due Current
CapitalLeasesFutureMinimumPaymentsDueCurrent
|
112900000 | USD |
| CY2015Q4 | us-gaap |
Capital Leases Future Minimum Payments Due In Five Years
CapitalLeasesFutureMinimumPaymentsDueInFiveYears
|
27700000 | USD |
| CY2015Q4 | us-gaap |
Capital Leases Future Minimum Payments Due In Four Years
CapitalLeasesFutureMinimumPaymentsDueInFourYears
|
38700000 | USD |
| CY2015Q4 | us-gaap |
Capital Leases Future Minimum Payments Due In Three Years
CapitalLeasesFutureMinimumPaymentsDueInThreeYears
|
54900000 | USD |
| CY2015Q4 | us-gaap |
Capital Leases Future Minimum Payments Due In Two Years
CapitalLeasesFutureMinimumPaymentsDueInTwoYears
|
76200000 | USD |
| CY2015Q4 | us-gaap |
Capital Leases Future Minimum Payments Due Thereafter
CapitalLeasesFutureMinimumPaymentsDueThereafter
|
110700000 | USD |
| CY2015Q4 | us-gaap |
Capital Leases Future Minimum Payments Interest Included In Payments
CapitalLeasesFutureMinimumPaymentsInterestIncludedInPayments
|
77600000 | USD |
| CY2015Q4 | us-gaap |
Capital Leases Future Minimum Payments Present Value Of Net Minimum Payments
CapitalLeasesFutureMinimumPaymentsPresentValueOfNetMinimumPayments
|
343500000 | USD |
| CY2013 | us-gaap |
Capital Leases Income Statement Amortization Expense
CapitalLeasesIncomeStatementAmortizationExpense
|
73900000 | USD |
| CY2014 | us-gaap |
Capital Leases Income Statement Amortization Expense
CapitalLeasesIncomeStatementAmortizationExpense
|
109400000 | USD |
| CY2015 | us-gaap |
Capital Leases Income Statement Amortization Expense
CapitalLeasesIncomeStatementAmortizationExpense
|
108500000 | USD |
| CY2013 | us-gaap |
Capital Leases Income Statement Interest Expense
CapitalLeasesIncomeStatementInterestExpense
|
28300000 | USD |
| CY2014 | us-gaap |
Capital Leases Income Statement Interest Expense
CapitalLeasesIncomeStatementInterestExpense
|
26100000 | USD |
| CY2015 | us-gaap |
Capital Leases Income Statement Interest Expense
CapitalLeasesIncomeStatementInterestExpense
|
25100000 | USD |
| CY2014Q4 | us-gaap |
Capital Leases Lessee Balance Sheet Assets By Major Class Accumulated Deprecation
CapitalLeasesLesseeBalanceSheetAssetsByMajorClassAccumulatedDeprecation
|
240000000 | USD |
| CY2015Q4 | us-gaap |
Capital Leases Lessee Balance Sheet Assets By Major Class Accumulated Deprecation
CapitalLeasesLesseeBalanceSheetAssetsByMajorClassAccumulatedDeprecation
|
214100000 | USD |
| CY2014Q4 | us-gaap |
Capital Leases Lessee Balance Sheet Assets By Major Class Other Property Plant And Equipment
CapitalLeasesLesseeBalanceSheetAssetsByMajorClassOtherPropertyPlantAndEquipment
|
683000000 | USD |
| CY2013Q4 | us-gaap |
Cash And Cash Equivalents At Carrying Value
CashAndCashEquivalentsAtCarryingValue
|
117500000 | USD |
| CY2014Q4 | us-gaap |
Cash And Cash Equivalents At Carrying Value
CashAndCashEquivalentsAtCarryingValue
|
162500000 | USD |
| CY2015Q4 | us-gaap |
Cash And Cash Equivalents At Carrying Value
CashAndCashEquivalentsAtCarryingValue
|
176400000 | USD |
| CY2014Q4 | us-gaap |
Cash And Cash Equivalents Fair Value Disclosure
CashAndCashEquivalentsFairValueDisclosure
|
162500000 | USD |
| CY2015Q4 | us-gaap |
Capital Leases Lessee Balance Sheet Assets By Major Class Other Property Plant And Equipment
CapitalLeasesLesseeBalanceSheetAssetsByMajorClassOtherPropertyPlantAndEquipment
|
439300000 | USD |
| CY2012Q4 | us-gaap |
Cash And Cash Equivalents At Carrying Value
CashAndCashEquivalentsAtCarryingValue
|
278700000 | USD |
| CY2013 | us-gaap |
Cash Provided By Used In Investing Activities Discontinued Operations
CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations
|
-400000 | USD |
| CY2015 | us-gaap |
Cash Provided By Used In Operating Activities Discontinued Operations
CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations
|
69800000 | USD |
| CY2015Q4 | us-gaap |
Cash And Cash Equivalents Fair Value Disclosure
CashAndCashEquivalentsFairValueDisclosure
|
176400000 | USD |
| CY2013 | us-gaap |
Cash And Cash Equivalents Period Increase Decrease
CashAndCashEquivalentsPeriodIncreaseDecrease
|
-161200000 | USD |
| CY2014 | us-gaap |
Cash And Cash Equivalents Period Increase Decrease
CashAndCashEquivalentsPeriodIncreaseDecrease
|
45000000 | USD |
| CY2015 | us-gaap |
Cash And Cash Equivalents Period Increase Decrease
CashAndCashEquivalentsPeriodIncreaseDecrease
|
13900000 | USD |
| CY2013 | us-gaap |
Cash Provided By Used In Financing Activities Discontinued Operations
CashProvidedByUsedInFinancingActivitiesDiscontinuedOperations
|
-10000000 | USD |
| CY2014 | us-gaap |
Cash Provided By Used In Financing Activities Discontinued Operations
CashProvidedByUsedInFinancingActivitiesDiscontinuedOperations
|
-11600000 | USD |
| CY2015 | us-gaap |
Cash Provided By Used In Financing Activities Discontinued Operations
CashProvidedByUsedInFinancingActivitiesDiscontinuedOperations
|
-127700000 | USD |
| CY2014 | us-gaap |
Cash Provided By Used In Investing Activities Discontinued Operations
CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations
|
-100000 | USD |
| CY2015 | us-gaap |
Cash Provided By Used In Investing Activities Discontinued Operations
CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations
|
548800000 | USD |
| CY2013 | us-gaap |
Cash Provided By Used In Operating Activities Discontinued Operations
CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations
|
9500000 | USD |
| CY2014 | us-gaap |
Cash Provided By Used In Operating Activities Discontinued Operations
CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations
|
11100000 | USD |
| CY2014Q4 | us-gaap |
Collateral Already Posted Aggregate Fair Value
CollateralAlreadyPostedAggregateFairValue
|
8500000 | USD |
| CY2015Q4 | us-gaap |
Collateral Already Posted Aggregate Fair Value
CollateralAlreadyPostedAggregateFairValue
|
800000 | USD |
| CY2014Q4 | us-gaap |
Commercial Paper
CommercialPaper
|
602000000 | USD |
| CY2015Q4 | us-gaap |
Commercial Paper
CommercialPaper
|
125000000 | USD |
| CY2014Q4 | us-gaap |
Commitments And Contingencies
CommitmentsAndContingencies
|
USD | |
| CY2015Q4 | us-gaap |
Commitments And Contingencies
CommitmentsAndContingencies
|
USD | |
| CY2015Q4 | us-gaap |
Common Stock Capital Shares Reserved For Future Issuance
CommonStockCapitalSharesReservedForFutureIssuance
|
9964153 | shares |
| CY2013 | us-gaap |
Common Stock Dividends Per Share Declared
CommonStockDividendsPerShareDeclared
|
1.95 | |
| CY2014 | us-gaap |
Common Stock Dividends Per Share Declared
CommonStockDividendsPerShareDeclared
|
2.03 | |
| CY2015 | us-gaap |
Common Stock Dividends Per Share Declared
CommonStockDividendsPerShareDeclared
|
2.15 | |
| CY2014Q4 | us-gaap |
Common Stock Par Or Stated Value Per Share
CommonStockParOrStatedValuePerShare
|
6.50 | |
| CY2015Q4 | us-gaap |
Common Stock Par Or Stated Value Per Share
CommonStockParOrStatedValuePerShare
|
6.50 | |
| CY2014Q4 | us-gaap |
Common Stock Shares Authorized
CommonStockSharesAuthorized
|
600000000 | shares |
| CY2015Q4 | us-gaap |
Common Stock Shares Authorized
CommonStockSharesAuthorized
|
600000000 | shares |
| CY2012Q4 | us-gaap |
Common Stock Shares Issued
CommonStockSharesIssued
|
506004962 | shares |
| CY2013Q4 | us-gaap |
Common Stock Shares Issued
CommonStockSharesIssued
|
508113964 | shares |
| CY2014Q4 | us-gaap |
Common Stock Shares Issued
CommonStockSharesIssued
|
509739159 | shares |
| CY2015Q4 | us-gaap |
Common Stock Shares Issued
CommonStockSharesIssued
|
511389173 | shares |
| CY2014Q4 | us-gaap |
Common Stock Value
CommonStockValue
|
3313300000 | USD |
| CY2015Q4 | us-gaap |
Common Stock Value
CommonStockValue
|
3324000000 | USD |
| CY2013 | us-gaap |
Comprehensive Income Net Of Tax
ComprehensiveIncomeNetOfTax
|
1697100000 | USD |
| CY2014 | us-gaap |
Comprehensive Income Net Of Tax
ComprehensiveIncomeNetOfTax
|
1645900000 | USD |
| CY2015 | us-gaap |
Comprehensive Income Net Of Tax
ComprehensiveIncomeNetOfTax
|
2017100000 | USD |
| CY2013 | us-gaap |
Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest
ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest
|
3700000 | USD |
| CY2014 | us-gaap |
Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest
ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest
|
4200000 | USD |
| CY2015 | us-gaap |
Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest
ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest
|
5200000 | USD |
| CY2013 | us-gaap |
Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest
ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest
|
1700800000 | USD |
| CY2014 | us-gaap |
Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest
ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest
|
1650100000 | USD |
| CY2015 | us-gaap |
Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest
ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest
|
2022300000 | USD |
| CY2013 | us-gaap |
Construction In Progress Expenditures Incurred But Not Yet Paid
ConstructionInProgressExpendituresIncurredButNotYetPaid
|
492400000 | USD |
| CY2014 | us-gaap |
Construction In Progress Expenditures Incurred But Not Yet Paid
ConstructionInProgressExpendituresIncurredButNotYetPaid
|
559300000 | USD |
| CY2015 | us-gaap |
Construction In Progress Expenditures Incurred But Not Yet Paid
ConstructionInProgressExpendituresIncurredButNotYetPaid
|
741400000 | USD |
| CY2013 | us-gaap |
Defined Contribution Plan Cost Recognized
DefinedContributionPlanCostRecognized
|
66600000 | USD |
| CY2015 | us-gaap |
Current Federal Tax Expense Benefit
CurrentFederalTaxExpenseBenefit
|
107300000 | USD |
| CY2014Q4 | us-gaap |
Customer Deposits Current
CustomerDepositsCurrent
|
323900000 | USD |
| CY2015Q4 | us-gaap |
Customer Deposits Current
CustomerDepositsCurrent
|
346600000 | USD |
| CY2014Q4 | us-gaap |
Construction In Progress Gross
ConstructionInProgressGross
|
3215300000 | USD |
| CY2015Q4 | us-gaap |
Construction In Progress Gross
ConstructionInProgressGross
|
3903900000 | USD |
| CY2013 | us-gaap |
Cost Of Purchased Power
CostOfPurchasedPower
|
1490800000 | USD |
| CY2014 | us-gaap |
Cost Of Purchased Power
CostOfPurchasedPower
|
2085900000 | USD |
| CY2015 | us-gaap |
Cost Of Purchased Power
CostOfPurchasedPower
|
2760100000 | USD |
| CY2013 | us-gaap |
Current Federal Tax Expense Benefit
CurrentFederalTaxExpenseBenefit
|
-53400000 | USD |
| CY2014 | us-gaap |
Current Federal Tax Expense Benefit
CurrentFederalTaxExpenseBenefit
|
22800000 | USD |
| CY2013 | us-gaap |
Current State And Local Tax Expense Benefit
CurrentStateAndLocalTaxExpenseBenefit
|
28700000 | USD |
| CY2014 | us-gaap |
Current State And Local Tax Expense Benefit
CurrentStateAndLocalTaxExpenseBenefit
|
22800000 | USD |
| CY2015 | us-gaap |
Current State And Local Tax Expense Benefit
CurrentStateAndLocalTaxExpenseBenefit
|
14500000 | USD |
| CY2015Q4 | us-gaap |
Debt Instrument Carrying Amount
DebtInstrumentCarryingAmount
|
19692100000 | USD |
| CY2015 | us-gaap |
Debt Instrument Interest Rate During Period
DebtInstrumentInterestRateDuringPeriod
|
0.0046 | |
| CY2013 | us-gaap |
Deferred Federal Income Tax Expense Benefit
DeferredFederalIncomeTaxExpenseBenefit
|
678600000 | USD |
| CY2014 | us-gaap |
Deferred Federal Income Tax Expense Benefit
DeferredFederalIncomeTaxExpenseBenefit
|
800100000 | USD |
| CY2015 | us-gaap |
Deferred Federal Income Tax Expense Benefit
DeferredFederalIncomeTaxExpenseBenefit
|
774800000 | USD |
| CY2013 | us-gaap |
Deferred Income Tax Expense Benefit
DeferredIncomeTaxExpenseBenefit
|
711200000 | USD |
| CY2014 | us-gaap |
Deferred Income Tax Expense Benefit
DeferredIncomeTaxExpenseBenefit
|
868800000 | USD |
| CY2015 | us-gaap |
Deferred Income Tax Expense Benefit
DeferredIncomeTaxExpenseBenefit
|
808200000 | USD |
| CY2014Q4 | us-gaap |
Deferred Income Tax Liabilities
DeferredIncomeTaxLiabilities
|
13503100000 | USD |
| CY2015Q4 | us-gaap |
Deferred Income Tax Liabilities
DeferredIncomeTaxLiabilities
|
14237100000 | USD |
| CY2014Q4 | us-gaap |
Deferred Income Tax Liabilities Net
DeferredIncomeTaxLiabilitiesNet
|
10852400000 | USD |
| CY2015Q4 | us-gaap |
Deferred Income Tax Liabilities Net
DeferredIncomeTaxLiabilitiesNet
|
11733200000 | USD |
| CY2013 | us-gaap |
Deferred State And Local Income Tax Expense Benefit
DeferredStateAndLocalIncomeTaxExpenseBenefit
|
23800000 | USD |
| CY2014 | us-gaap |
Deferred State And Local Income Tax Expense Benefit
DeferredStateAndLocalIncomeTaxExpenseBenefit
|
56900000 | USD |
| CY2015 | us-gaap |
Deferred State And Local Income Tax Expense Benefit
DeferredStateAndLocalIncomeTaxExpenseBenefit
|
23000000 | USD |
| CY2014Q4 | us-gaap |
Deferred Tax Assets Gross
DeferredTaxAssetsGross
|
2650700000 | USD |
| CY2015Q4 | us-gaap |
Deferred Tax Assets Gross
DeferredTaxAssetsGross
|
2503900000 | USD |
| CY2014Q4 | us-gaap |
Deferred Tax Assets Operating Loss Carryforwards
DeferredTaxAssetsOperatingLossCarryforwards
|
46400000 | USD |
| CY2015Q4 | us-gaap |
Deferred Tax Assets Operating Loss Carryforwards
DeferredTaxAssetsOperatingLossCarryforwards
|
39600000 | USD |
| CY2014Q4 | us-gaap |
Deferred Tax Assets Tax Credit Carryforwards General Business
DeferredTaxAssetsTaxCreditCarryforwardsGeneralBusiness
|
144300000 | USD |
| CY2015Q4 | us-gaap |
Deferred Tax Assets Tax Credit Carryforwards General Business
DeferredTaxAssetsTaxCreditCarryforwardsGeneralBusiness
|
85000000 | USD |
| CY2014Q4 | us-gaap |
Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Asset Retirement Obligations
DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAssetRetirementObligations
|
-611000000 | USD |
| CY2015Q4 | us-gaap |
Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Asset Retirement Obligations
DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAssetRetirementObligations
|
-614600000 | USD |
| CY2014Q4 | us-gaap |
Deferred Tax Assets Valuation Allowance
DeferredTaxAssetsValuationAllowance
|
55600000 | USD |
| CY2015Q4 | us-gaap |
Deferred Tax Assets Valuation Allowance
DeferredTaxAssetsValuationAllowance
|
130000000 | USD |
| CY2014Q4 | us-gaap |
Deferred Tax Liabilities Noncurrent
DeferredTaxLiabilitiesNoncurrent
|
10892200000 | USD |
| CY2015Q4 | us-gaap |
Deferred Tax Liabilities Noncurrent
DeferredTaxLiabilitiesNoncurrent
|
11733200000 | USD |
| CY2014Q4 | us-gaap |
Deferred Tax Liabilities Other Comprehensive Income
DeferredTaxLiabilitiesOtherComprehensiveIncome
|
-59700000 | USD |
| CY2015Q4 | us-gaap |
Deferred Tax Liabilities Other Comprehensive Income
DeferredTaxLiabilitiesOtherComprehensiveIncome
|
-72200000 | USD |
| CY2014Q4 | us-gaap |
Deferred Tax Liabilities Regulatory Assets
DeferredTaxLiabilitiesRegulatoryAssets
|
694100000 | USD |
| CY2015Q4 | us-gaap |
Deferred Tax Liabilities Regulatory Assets
DeferredTaxLiabilitiesRegulatoryAssets
|
873600000 | USD |
| CY2014 | us-gaap |
Defined Contribution Plan Cost Recognized
DefinedContributionPlanCostRecognized
|
70500000 | USD |
| CY2015 | us-gaap |
Defined Contribution Plan Cost Recognized
DefinedContributionPlanCostRecognized
|
73600000 | USD |
| CY2014Q4 | us-gaap |
Delinquent Amount At End Of Period On Loans Managed And Securitized
DelinquentAmountAtEndOfPeriodOnLoansManagedAndSecuritized
|
43900000 | USD |
| CY2015Q4 | us-gaap |
Delinquent Amount At End Of Period On Loans Managed And Securitized
DelinquentAmountAtEndOfPeriodOnLoansManagedAndSecuritized
|
48300000 | USD |
| CY2013 | us-gaap |
Depreciation
Depreciation
|
1441400000 | USD |
| CY2014 | us-gaap |
Depreciation
Depreciation
|
1573700000 | USD |
| CY2015 | us-gaap |
Depreciation
Depreciation
|
1674300000 | USD |
| CY2014Q4 | us-gaap |
Derivative Assets
DerivativeAssets
|
472100000 | USD |
| CY2015Q4 | us-gaap |
Derivative Assets
DerivativeAssets
|
456200000 | USD |
| CY2014Q4 | us-gaap |
Derivative Assets Current
DerivativeAssetsCurrent
|
177900000 | USD |
| CY2015Q4 | us-gaap |
Derivative Assets Current
DerivativeAssetsCurrent
|
134400000 | USD |
| CY2014Q4 | us-gaap |
Derivative Assets Noncurrent
DerivativeAssetsNoncurrent
|
294200000 | USD |
| CY2015Q4 | us-gaap |
Derivative Assets Noncurrent
DerivativeAssetsNoncurrent
|
321800000 | USD |
| CY2013 | us-gaap |
Derivative Gain Loss On Derivative Net
DerivativeGainLossOnDerivativeNet
|
-10400000 | USD |
| CY2014 | us-gaap |
Derivative Gain Loss On Derivative Net
DerivativeGainLossOnDerivativeNet
|
3800000 | USD |
| CY2015 | us-gaap |
Derivative Gain Loss On Derivative Net
DerivativeGainLossOnDerivativeNet
|
3200000 | USD |
| CY2014Q4 | us-gaap |
Derivative Liabilities
DerivativeLiabilities
|
222500000 | USD |
| CY2015Q4 | us-gaap |
Derivative Liabilities
DerivativeLiabilities
|
266200000 | USD |
| CY2014Q4 | us-gaap |
Derivative Liabilities Current
DerivativeLiabilitiesCurrent
|
91600000 | USD |
| CY2015Q4 | us-gaap |
Derivative Liabilities Current
DerivativeLiabilitiesCurrent
|
87100000 | USD |
| CY2014Q4 | us-gaap |
Derivative Liabilities Noncurrent
DerivativeLiabilitiesNoncurrent
|
130900000 | USD |
| CY2015Q4 | us-gaap |
Derivative Liabilities Noncurrent
DerivativeLiabilitiesNoncurrent
|
179100000 | USD |
| CY2014Q4 | us-gaap |
Derivative Net Liability Position Aggregate Fair Value
DerivativeNetLiabilityPositionAggregateFairValue
|
0 | USD |
| CY2015Q4 | us-gaap |
Derivative Net Liability Position Aggregate Fair Value
DerivativeNetLiabilityPositionAggregateFairValue
|
0 | USD |
| CY2013 | us-gaap |
Discontinued Operation Income Loss From Discontinued Operation Net Of Tax Per Basic Share
DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerBasicShare
|
0.02 | |
| CY2014Q1 | us-gaap |
Discontinued Operation Income Loss From Discontinued Operation Net Of Tax Per Basic Share
DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerBasicShare
|
0.01 | |
| CY2014Q2 | us-gaap |
Discontinued Operation Income Loss From Discontinued Operation Net Of Tax Per Basic Share
DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerBasicShare
|
0.01 | |
| CY2014Q3 | us-gaap |
Discontinued Operation Income Loss From Discontinued Operation Net Of Tax Per Basic Share
DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerBasicShare
|
0.02 | |
| CY2014Q4 | us-gaap |
Discontinued Operation Income Loss From Discontinued Operation Net Of Tax Per Basic Share
DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerBasicShare
|
0.07 | |
| CY2014 | us-gaap |
Discontinued Operation Income Loss From Discontinued Operation Net Of Tax Per Basic Share
DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerBasicShare
|
0.10 | |
| CY2015Q1 | us-gaap |
Discontinued Operation Income Loss From Discontinued Operation Net Of Tax Per Basic Share
DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerBasicShare
|
0.02 | |
| CY2015Q2 | us-gaap |
Discontinued Operation Income Loss From Discontinued Operation Net Of Tax Per Basic Share
DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerBasicShare
|
0.00 | |
| CY2015Q3 | us-gaap |
Discontinued Operation Income Loss From Discontinued Operation Net Of Tax Per Basic Share
DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerBasicShare
|
0.02 | |
| CY2015Q4 | us-gaap |
Discontinued Operation Income Loss From Discontinued Operation Net Of Tax Per Basic Share
DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerBasicShare
|
0.54 | |
| CY2015 | us-gaap |
Discontinued Operation Income Loss From Discontinued Operation Net Of Tax Per Basic Share
DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerBasicShare
|
0.58 | |
| CY2013 | us-gaap |
Discontinued Operation Income Loss From Discontinued Operation Net Of Tax Per Diluted Share
DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerDilutedShare
|
0.02 | |
| CY2014Q1 | us-gaap |
Discontinued Operation Income Loss From Discontinued Operation Net Of Tax Per Diluted Share
DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerDilutedShare
|
0.01 | |
| CY2014Q2 | us-gaap |
Discontinued Operation Income Loss From Discontinued Operation Net Of Tax Per Diluted Share
DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerDilutedShare
|
0.01 | |
| CY2014Q3 | us-gaap |
Discontinued Operation Income Loss From Discontinued Operation Net Of Tax Per Diluted Share
DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerDilutedShare
|
0.02 | |
| CY2014Q4 | us-gaap |
Discontinued Operation Income Loss From Discontinued Operation Net Of Tax Per Diluted Share
DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerDilutedShare
|
0.07 | |
| CY2014 | us-gaap |
Discontinued Operation Income Loss From Discontinued Operation Net Of Tax Per Diluted Share
DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerDilutedShare
|
0.10 | |
| CY2015Q1 | us-gaap |
Discontinued Operation Income Loss From Discontinued Operation Net Of Tax Per Diluted Share
DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerDilutedShare
|
0.02 | |
| CY2015Q2 | us-gaap |
Discontinued Operation Income Loss From Discontinued Operation Net Of Tax Per Diluted Share
DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerDilutedShare
|
0.00 | |
| CY2015Q3 | us-gaap |
Discontinued Operation Income Loss From Discontinued Operation Net Of Tax Per Diluted Share
DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerDilutedShare
|
0.02 | |
| CY2015Q4 | us-gaap |
Discontinued Operation Income Loss From Discontinued Operation Net Of Tax Per Diluted Share
DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerDilutedShare
|
0.54 | |
| CY2014 | us-gaap |
Earnings Per Share Diluted
EarningsPerShareDiluted
|
3.34 | |
| CY2015Q1 | us-gaap |
Earnings Per Share Diluted
EarningsPerShareDiluted
|
1.29 | |
| CY2015Q2 | us-gaap |
Earnings Per Share Diluted
EarningsPerShareDiluted
|
0.88 | |
| CY2015Q3 | us-gaap |
Earnings Per Share Diluted
EarningsPerShareDiluted
|
1.06 | |
| CY2015Q4 | us-gaap |
Earnings Per Share Diluted
EarningsPerShareDiluted
|
0.95 | |
| CY2015 | us-gaap |
Earnings Per Share Diluted
EarningsPerShareDiluted
|
4.17 | |
| CY2013 | us-gaap |
Effective Income Tax Rate Continuing Operations
EffectiveIncomeTaxRateContinuingOperations
|
0.3149749024 | |
| CY2014 | us-gaap |
Effective Income Tax Rate Continuing Operations
EffectiveIncomeTaxRateContinuingOperations
|
0.3620392283 | |
| CY2015 | us-gaap |
Discontinued Operation Income Loss From Discontinued Operation Net Of Tax Per Diluted Share
DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerDilutedShare
|
0.58 | |
| CY2013 | us-gaap |
Discontinued Operation Tax Effect Of Discontinued Operation
DiscontinuedOperationTaxEffectOfDiscontinuedOperation
|
5900000 | USD |
| CY2014 | us-gaap |
Discontinued Operation Tax Effect Of Discontinued Operation
DiscontinuedOperationTaxEffectOfDiscontinuedOperation
|
39000000 | USD |
| CY2014Q4 | us-gaap |
Disposal Group Including Discontinued Operation Assets Noncurrent
DisposalGroupIncludingDiscontinuedOperationAssetsNoncurrent
|
521600000 | USD |
| CY2015Q4 | us-gaap |
Disposal Group Including Discontinued Operation Assets Noncurrent
DisposalGroupIncludingDiscontinuedOperationAssetsNoncurrent
|
0 | USD |
| CY2014Q4 | us-gaap |
Disposal Group Including Discontinued Operation Capital Leased Assets
DisposalGroupIncludingDiscontinuedOperationCapitalLeasedAssets
|
179000000 | USD |
| CY2015Q4 | us-gaap |
Disposal Group Including Discontinued Operation Goodwill1
DisposalGroupIncludingDiscontinuedOperationGoodwill1
|
38800000 | USD |
| CY2014Q4 | us-gaap |
Disposal Group Including Discontinued Operation Property Plant And Equipment
DisposalGroupIncludingDiscontinuedOperationPropertyPlantAndEquipment
|
482000000 | USD |
| CY2013 | us-gaap |
Dividends Common Stock
DividendsCommonStock
|
954300000 | USD |
| CY2014 | us-gaap |
Dividends Common Stock
DividendsCommonStock
|
997600000 | USD |
| CY2015 | us-gaap |
Dividends Common Stock
DividendsCommonStock
|
1059000000 | USD |
| CY2013 | us-gaap |
Earnings Per Share Basic
EarningsPerShareBasic
|
3.04 | |
| CY2014Q1 | us-gaap |
Earnings Per Share Basic
EarningsPerShareBasic
|
1.15 | |
| CY2014Q2 | us-gaap |
Earnings Per Share Basic
EarningsPerShareBasic
|
0.80 | |
| CY2014Q3 | us-gaap |
Earnings Per Share Basic
EarningsPerShareBasic
|
1.01 | |
| CY2014Q4 | us-gaap |
Earnings Per Share Basic
EarningsPerShareBasic
|
0.39 | |
| CY2014 | us-gaap |
Earnings Per Share Basic
EarningsPerShareBasic
|
3.34 | |
| CY2015Q1 | us-gaap |
Earnings Per Share Basic
EarningsPerShareBasic
|
1.29 | |
| CY2015Q2 | us-gaap |
Earnings Per Share Basic
EarningsPerShareBasic
|
0.88 | |
| CY2015Q3 | us-gaap |
Earnings Per Share Basic
EarningsPerShareBasic
|
1.06 | |
| CY2015Q4 | us-gaap |
Earnings Per Share Basic
EarningsPerShareBasic
|
0.95 | |
| CY2015 | us-gaap |
Earnings Per Share Basic
EarningsPerShareBasic
|
4.17 | |
| CY2013 | us-gaap |
Earnings Per Share Diluted
EarningsPerShareDiluted
|
3.04 | |
| CY2014Q1 | us-gaap |
Earnings Per Share Diluted
EarningsPerShareDiluted
|
1.15 | |
| CY2014Q2 | us-gaap |
Earnings Per Share Diluted
EarningsPerShareDiluted
|
0.80 | |
| CY2014Q3 | us-gaap |
Earnings Per Share Diluted
EarningsPerShareDiluted
|
1.01 | |
| CY2014Q4 | us-gaap |
Earnings Per Share Diluted
EarningsPerShareDiluted
|
0.39 | |
| CY2015 | us-gaap |
Effective Income Tax Rate Continuing Operations
EffectiveIncomeTaxRateContinuingOperations
|
0.3420876423 | |
| CY2013 | us-gaap |
Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate
EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate
|
0.35 | |
| CY2014 | us-gaap |
Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate
EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate
|
0.35 | |
| CY2015 | us-gaap |
Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate
EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate
|
0.35 | |
| CY2013 | us-gaap |
Electric Production Expense
ElectricProductionExpense
|
4068300000 | USD |
| CY2014 | us-gaap |
Electric Production Expense
ElectricProductionExpense
|
4271800000 | USD |
| CY2015 | us-gaap |
Electric Production Expense
ElectricProductionExpense
|
3348100000 | USD |
| CY2013 | us-gaap |
Electric Utility Revenue
ElectricUtilityRevenue
|
9346600000 | USD |
| CY2014 | us-gaap |
Electric Utility Revenue
ElectricUtilityRevenue
|
9396800000 | USD |
| CY2015 | us-gaap |
Electric Utility Revenue
ElectricUtilityRevenue
|
9069900000 | USD |
| CY2013 | us-gaap |
Electrical Generation Revenue
ElectricalGenerationRevenue
|
1208000000 | USD |
| CY2014 | us-gaap |
Electrical Generation Revenue
ElectricalGenerationRevenue
|
2384300000 | USD |
| CY2015 | us-gaap |
Electrical Generation Revenue
ElectricalGenerationRevenue
|
2866700000 | USD |
| CY2013 | us-gaap |
Electrical Transmission And Distribution Revenue
ElectricalTransmissionAndDistributionRevenue
|
4279100000 | USD |
| CY2014 | us-gaap |
Electrical Transmission And Distribution Revenue
ElectricalTransmissionAndDistributionRevenue
|
4552600000 | USD |
| CY2015 | us-gaap |
Electrical Transmission And Distribution Revenue
ElectricalTransmissionAndDistributionRevenue
|
4392000000 | USD |
| CY2014Q4 | us-gaap |
Equity Method Investments
EquityMethodInvestments
|
648400000 | USD |
| CY2015Q4 | us-gaap |
Equity Method Investments
EquityMethodInvestments
|
720500000 | USD |
| CY2013 | us-gaap |
Fair Value Assets Measured On Recurring Basis Change In Unrealized Gain Loss
FairValueAssetsMeasuredOnRecurringBasisChangeInUnrealizedGainLoss
|
37500000 | USD |
| CY2014 | us-gaap |
Fair Value Assets Measured On Recurring Basis Change In Unrealized Gain Loss
FairValueAssetsMeasuredOnRecurringBasisChangeInUnrealizedGainLoss
|
700000 | USD |
| CY2015 | us-gaap |
Fair Value Assets Measured On Recurring Basis Change In Unrealized Gain Loss
FairValueAssetsMeasuredOnRecurringBasisChangeInUnrealizedGainLoss
|
53700000 | USD |
| CY2014 | us-gaap |
Fair Value Inputs Counterparty Credit Risk
FairValueInputsCounterpartyCreditRisk
|
0.0303 | |
| CY2015 | us-gaap |
Fair Value Inputs Counterparty Credit Risk
FairValueInputsCounterpartyCreditRisk
|
0.0670 | |
| CY2013 | us-gaap |
Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Earnings1
FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1
|
-9200000 | USD |
| CY2014 | us-gaap |
Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Earnings1
FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1
|
90000000 | USD |
| CY2015 | us-gaap |
Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Earnings1
FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1
|
13500000 | USD |
| CY2013 | us-gaap |
Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Other Comprehensive Income Loss
FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss
|
-2500000 | USD |
| CY2014 | us-gaap |
Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Other Comprehensive Income Loss
FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss
|
5700000 | USD |
| CY2015 | us-gaap |
Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Other Comprehensive Income Loss
FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss
|
-4900000 | USD |
| CY2013 | us-gaap |
Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Purchases Sales Issuances Settlements
FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchasesSalesIssuancesSettlements
|
-15800000 | USD |
| CY2014 | us-gaap |
Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Purchases Sales Issuances Settlements
FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchasesSalesIssuancesSettlements
|
-108700000 | USD |
| CY2015 | us-gaap |
Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Purchases Sales Issuances Settlements
FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchasesSalesIssuancesSettlements
|
-63000000 | USD |
| CY2013 | us-gaap |
Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Into Level3
FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersIntoLevel3
|
19000000 | USD |
| CY2014 | us-gaap |
Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Into Level3
FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersIntoLevel3
|
-7600000 | USD |
| CY2015 | us-gaap |
Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Into Level3
FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersIntoLevel3
|
28700000 | USD |
| CY2013 | us-gaap |
Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Out Of Level3
FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersOutOfLevel3
|
3600000 | USD |
| CY2014 | us-gaap |
Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Out Of Level3
FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersOutOfLevel3
|
21500000 | USD |
| CY2015 | us-gaap |
Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Out Of Level3
FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersOutOfLevel3
|
18900000 | USD |
| CY2012Q4 | us-gaap |
Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value
FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue
|
85400000 | USD |
| CY2013Q4 | us-gaap |
Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value
FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue
|
117900000 | USD |
| CY2014Q4 | us-gaap |
Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value
FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue
|
150800000 | USD |
| CY2015Q4 | us-gaap |
Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value
FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue
|
146900000 | USD |
| CY2013 | us-gaap |
Federal Income Tax Expense Benefit Continuing Operations
FederalIncomeTaxExpenseBenefitContinuingOperations
|
625200000 | USD |
| CY2014 | us-gaap |
Federal Income Tax Expense Benefit Continuing Operations
FederalIncomeTaxExpenseBenefitContinuingOperations
|
822900000 | USD |
| CY2015 | us-gaap |
Federal Income Tax Expense Benefit Continuing Operations
FederalIncomeTaxExpenseBenefitContinuingOperations
|
882100000 | USD |
| CY2015Q4 | us-gaap |
Finite Lived Intangible Assets Amortization Expense Next Twelve Months
FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths
|
2000000 | USD |
| CY2014 | us-gaap |
Finitelived Intangible Assets Acquired1
FinitelivedIntangibleAssetsAcquired1
|
5000000 | USD |
| CY2015 | us-gaap |
Finitelived Intangible Assets Acquired1
FinitelivedIntangibleAssetsAcquired1
|
2000000 | USD |
| CY2013 | us-gaap |
Gain Loss On Derivative Instruments Net Pretax
GainLossOnDerivativeInstrumentsNetPretax
|
56900000 | USD |
| CY2014 | us-gaap |
Gain Loss On Derivative Instruments Net Pretax
GainLossOnDerivativeInstrumentsNetPretax
|
269700000 | USD |
| CY2015 | us-gaap |
Gain Loss On Derivative Instruments Net Pretax
GainLossOnDerivativeInstrumentsNetPretax
|
86400000 | USD |
| CY2014Q4 | us-gaap |
Goodwill
Goodwill
|
52500000 | USD |
| CY2015Q4 | us-gaap |
Goodwill
Goodwill
|
52500000 | USD |
| CY2014 | us-gaap |
Goodwill Impairment Loss
GoodwillImpairmentLoss
|
0 | USD |
| CY2015 | us-gaap |
Goodwill Impairment Loss
GoodwillImpairmentLoss
|
0 | USD |
| CY2013 | us-gaap |
Income Loss From Continuing Operations
IncomeLossFromContinuingOperations
|
1470200000 | USD |
| CY2015 | us-gaap |
Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments
IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
|
2622900000 | USD |
| CY2013 | us-gaap |
Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest
IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest
|
1473900000 | USD |
| CY2014Q1 | us-gaap |
Income Loss From Continuing Operations Per Diluted Share
IncomeLossFromContinuingOperationsPerDilutedShare
|
1.14 | |
| CY2014 | us-gaap |
Income Loss From Continuing Operations
IncomeLossFromContinuingOperations
|
1586300000 | USD |
| CY2015 | us-gaap |
Income Loss From Continuing Operations
IncomeLossFromContinuingOperations
|
1763400000 | USD |
| CY2013 | us-gaap |
Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest
IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
|
2151600000 | USD |
| CY2014 | us-gaap |
Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest
IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
|
2493100000 | USD |
| CY2015 | us-gaap |
Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest
IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
|
2688200000 | USD |
| CY2013 | us-gaap |
Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments
IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
|
2093300000 | USD |
| CY2014 | us-gaap |
Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments
IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
|
2402900000 | USD |
| CY2014Q1 | us-gaap |
Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest
IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest
|
558300000 | USD |
| CY2014Q2 | us-gaap |
Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest
IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest
|
388400000 | USD |
| CY2014Q3 | us-gaap |
Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest
IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest
|
484200000 | USD |
| CY2014Q4 | us-gaap |
Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest
IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest
|
159600000 | USD |
| CY2014 | us-gaap |
Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest
IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest
|
1590500000 | USD |
| CY2015Q1 | us-gaap |
Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest
IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest
|
620200000 | USD |
| CY2015Q2 | us-gaap |
Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest
IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest
|
431400000 | USD |
| CY2015Q3 | us-gaap |
Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest
IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest
|
511800000 | USD |
| CY2015Q4 | us-gaap |
Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest
IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest
|
205200000 | USD |
| CY2015 | us-gaap |
Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest
IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest
|
1768600000 | USD |
| CY2013 | us-gaap |
Income Loss From Continuing Operations Per Basic Share
IncomeLossFromContinuingOperationsPerBasicShare
|
3.02 | |
| CY2014Q1 | us-gaap |
Income Loss From Continuing Operations Per Basic Share
IncomeLossFromContinuingOperationsPerBasicShare
|
1.14 | |
| CY2014Q2 | us-gaap |
Income Loss From Continuing Operations Per Basic Share
IncomeLossFromContinuingOperationsPerBasicShare
|
0.79 | |
| CY2014Q3 | us-gaap |
Income Loss From Continuing Operations Per Basic Share
IncomeLossFromContinuingOperationsPerBasicShare
|
0.99 | |
| CY2014Q4 | us-gaap |
Income Loss From Continuing Operations Per Basic Share
IncomeLossFromContinuingOperationsPerBasicShare
|
0.32 | |
| CY2014 | us-gaap |
Income Loss From Continuing Operations Per Basic Share
IncomeLossFromContinuingOperationsPerBasicShare
|
3.24 | |
| CY2015Q1 | us-gaap |
Income Loss From Continuing Operations Per Basic Share
IncomeLossFromContinuingOperationsPerBasicShare
|
1.27 | |
| CY2015Q2 | us-gaap |
Income Loss From Continuing Operations Per Basic Share
IncomeLossFromContinuingOperationsPerBasicShare
|
0.88 | |
| CY2015Q3 | us-gaap |
Income Loss From Continuing Operations Per Basic Share
IncomeLossFromContinuingOperationsPerBasicShare
|
1.04 | |
| CY2015Q4 | us-gaap |
Income Loss From Continuing Operations Per Basic Share
IncomeLossFromContinuingOperationsPerBasicShare
|
0.41 | |
| CY2015 | us-gaap |
Income Loss From Continuing Operations Per Basic Share
IncomeLossFromContinuingOperationsPerBasicShare
|
3.59 | |
| CY2013 | us-gaap |
Income Loss From Continuing Operations Per Diluted Share
IncomeLossFromContinuingOperationsPerDilutedShare
|
3.02 | |
| CY2014Q2 | us-gaap |
Income Loss From Continuing Operations Per Diluted Share
IncomeLossFromContinuingOperationsPerDilutedShare
|
0.79 | |
| CY2014Q3 | us-gaap |
Income Loss From Continuing Operations Per Diluted Share
IncomeLossFromContinuingOperationsPerDilutedShare
|
0.99 | |
| CY2014Q4 | us-gaap |
Income Loss From Continuing Operations Per Diluted Share
IncomeLossFromContinuingOperationsPerDilutedShare
|
0.32 | |
| CY2014 | us-gaap |
Income Loss From Continuing Operations Per Diluted Share
IncomeLossFromContinuingOperationsPerDilutedShare
|
3.24 | |
| CY2015Q1 | us-gaap |
Income Loss From Continuing Operations Per Diluted Share
IncomeLossFromContinuingOperationsPerDilutedShare
|
1.27 | |
| CY2015Q2 | us-gaap |
Income Loss From Continuing Operations Per Diluted Share
IncomeLossFromContinuingOperationsPerDilutedShare
|
0.88 | |
| CY2015Q3 | us-gaap |
Income Loss From Continuing Operations Per Diluted Share
IncomeLossFromContinuingOperationsPerDilutedShare
|
1.04 | |
| CY2015Q4 | us-gaap |
Income Loss From Continuing Operations Per Diluted Share
IncomeLossFromContinuingOperationsPerDilutedShare
|
0.41 | |
| CY2015 | us-gaap |
Income Loss From Continuing Operations Per Diluted Share
IncomeLossFromContinuingOperationsPerDilutedShare
|
3.59 | |
| CY2013 | us-gaap |
Income Loss From Discontinued Operations Net Of Tax
IncomeLossFromDiscontinuedOperationsNetOfTax
|
10300000 | USD |
| CY2014Q1 | us-gaap |
Income Loss From Discontinued Operations Net Of Tax
IncomeLossFromDiscontinuedOperationsNetOfTax
|
2700000 | USD |
| CY2014Q2 | us-gaap |
Income Loss From Discontinued Operations Net Of Tax
IncomeLossFromDiscontinuedOperationsNetOfTax
|
2700000 | USD |
| CY2014Q3 | us-gaap |
Income Loss From Discontinued Operations Net Of Tax
IncomeLossFromDiscontinuedOperationsNetOfTax
|
10200000 | USD |
| CY2015 | us-gaap |
Payments To Acquire Property Plant And Equipment
PaymentsToAcquirePropertyPlantAndEquipment
|
5300000 | USD |
| CY2014 | us-gaap |
Other Comprehensive Income Loss Available For Sale Securities Tax
OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax
|
400000 | USD |
| CY2014 | us-gaap |
Income Tax Reconciliation Tax Settlements State And Local
IncomeTaxReconciliationTaxSettlementsStateAndLocal
|
54300000 | USD |
| CY2015 | us-gaap |
Income Tax Reconciliation Tax Settlements State And Local
IncomeTaxReconciliationTaxSettlementsStateAndLocal
|
24400000 | USD |
| CY2013 | us-gaap |
Income Taxes Paid Net
IncomeTaxesPaidNet
|
-54800000 | USD |
| CY2014Q4 | us-gaap |
Income Loss From Discontinued Operations Net Of Tax
IncomeLossFromDiscontinuedOperationsNetOfTax
|
31900000 | USD |
| CY2014 | us-gaap |
Income Loss From Discontinued Operations Net Of Tax
IncomeLossFromDiscontinuedOperationsNetOfTax
|
47500000 | USD |
| CY2014 | us-gaap |
Income Taxes Paid Net
IncomeTaxesPaidNet
|
117300000 | USD |
| CY2015Q4 | us-gaap |
Income Loss From Discontinued Operations Net Of Tax
IncomeLossFromDiscontinuedOperationsNetOfTax
|
265500000 | USD |
| CY2015 | us-gaap |
Income Taxes Paid Net
IncomeTaxesPaidNet
|
120200000 | USD |
| CY2015Q1 | us-gaap |
Income Loss From Discontinued Operations Net Of Tax
IncomeLossFromDiscontinuedOperationsNetOfTax
|
10500000 | USD |
| CY2015Q2 | us-gaap |
Income Loss From Discontinued Operations Net Of Tax
IncomeLossFromDiscontinuedOperationsNetOfTax
|
-100000 | USD |
| CY2015Q3 | us-gaap |
Income Loss From Discontinued Operations Net Of Tax
IncomeLossFromDiscontinuedOperationsNetOfTax
|
7800000 | USD |
| CY2013 | us-gaap |
Increase Decrease In Accounts And Other Receivables
IncreaseDecreaseInAccountsAndOtherReceivables
|
-22900000 | USD |
| CY2015 | us-gaap |
Income Loss From Discontinued Operations Net Of Tax
IncomeLossFromDiscontinuedOperationsNetOfTax
|
283700000 | USD |
| CY2013 | us-gaap |
Income Loss From Equity Method Investments
IncomeLossFromEquityMethodInvestments
|
58300000 | USD |
| CY2014 | us-gaap |
Income Loss From Equity Method Investments
IncomeLossFromEquityMethodInvestments
|
90200000 | USD |
| CY2015 | us-gaap |
Income Loss From Equity Method Investments
IncomeLossFromEquityMethodInvestments
|
65300000 | USD |
| CY2013 | us-gaap |
Income Tax Examination Interest Expense
IncomeTaxExaminationInterestExpense
|
1500000 | USD |
| CY2014 | us-gaap |
Income Tax Examination Interest Expense
IncomeTaxExaminationInterestExpense
|
2900000 | USD |
| CY2015 | us-gaap |
Income Tax Examination Interest Expense
IncomeTaxExaminationInterestExpense
|
2700000 | USD |
| CY2014Q4 | us-gaap |
Income Tax Examination Penalties And Interest Accrued
IncomeTaxExaminationPenaltiesAndInterestAccrued
|
5900000 | USD |
| CY2015Q4 | us-gaap |
Income Tax Examination Penalties And Interest Accrued
IncomeTaxExaminationPenaltiesAndInterestAccrued
|
7200000 | USD |
| CY2013 | us-gaap |
Income Tax Expense Benefit
IncomeTaxExpenseBenefit
|
677700000 | USD |
| CY2014 | us-gaap |
Income Tax Expense Benefit
IncomeTaxExpenseBenefit
|
902600000 | USD |
| CY2015 | us-gaap |
Income Tax Expense Benefit
IncomeTaxExpenseBenefit
|
919600000 | USD |
| CY2013 | us-gaap |
Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance
IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance
|
5100000 | USD |
| CY2014 | us-gaap |
Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance
IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance
|
-2500000 | USD |
| CY2015 | us-gaap |
Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance
IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance
|
17200000 | USD |
| CY2013 | us-gaap |
Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate
IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate
|
753100000 | USD |
| CY2014 | us-gaap |
Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate
IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate
|
872600000 | USD |
| CY2015 | us-gaap |
Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate
IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate
|
940900000 | USD |
| CY2013 | us-gaap |
Income Tax Reconciliation Nondeductible Expense Depreciation
IncomeTaxReconciliationNondeductibleExpenseDepreciation
|
46600000 | USD |
| CY2014 | us-gaap |
Income Tax Reconciliation Nondeductible Expense Depreciation
IncomeTaxReconciliationNondeductibleExpenseDepreciation
|
54000000 | USD |
| CY2015 | us-gaap |
Income Tax Reconciliation Nondeductible Expense Depreciation
IncomeTaxReconciliationNondeductibleExpenseDepreciation
|
53600000 | USD |
| CY2013 | us-gaap |
Income Tax Reconciliation Other Reconciling Items
IncomeTaxReconciliationOtherReconcilingItems
|
-11300000 | USD |
| CY2014 | us-gaap |
Income Tax Reconciliation Other Reconciling Items
IncomeTaxReconciliationOtherReconcilingItems
|
2700000 | USD |
| CY2015 | us-gaap |
Income Tax Reconciliation Other Reconciling Items
IncomeTaxReconciliationOtherReconcilingItems
|
-24500000 | USD |
| CY2013 | us-gaap |
Income Tax Reconciliation Tax Credits Investment
IncomeTaxReconciliationTaxCreditsInvestment
|
14000000 | USD |
| CY2014 | us-gaap |
Income Tax Reconciliation Tax Credits Investment
IncomeTaxReconciliationTaxCreditsInvestment
|
12800000 | USD |
| CY2015 | us-gaap |
Income Tax Reconciliation Tax Credits Investment
IncomeTaxReconciliationTaxCreditsInvestment
|
11600000 | USD |
| CY2013 | us-gaap |
Income Tax Reconciliation Tax Settlements State And Local
IncomeTaxReconciliationTaxSettlementsStateAndLocal
|
29100000 | USD |
| CY2014 | us-gaap |
Increase Decrease In Accounts And Other Receivables
IncreaseDecreaseInAccountsAndOtherReceivables
|
60300000 | USD |
| CY2015 | us-gaap |
Increase Decrease In Accounts And Other Receivables
IncreaseDecreaseInAccountsAndOtherReceivables
|
-200200000 | USD |
| CY2013 | us-gaap |
Increase Decrease In Accounts Payable
IncreaseDecreaseInAccountsPayable
|
94100000 | USD |
| CY2014 | us-gaap |
Increase Decrease In Accounts Payable
IncreaseDecreaseInAccountsPayable
|
-74900000 | USD |
| CY2015 | us-gaap |
Increase Decrease In Accounts Payable
IncreaseDecreaseInAccountsPayable
|
16500000 | USD |
| CY2013 | us-gaap |
Increase Decrease In Accrued Taxes Payable
IncreaseDecreaseInAccruedTaxesPayable
|
86200000 | USD |
| CY2014 | us-gaap |
Increase Decrease In Accrued Taxes Payable
IncreaseDecreaseInAccruedTaxesPayable
|
400000 | USD |
| CY2015 | us-gaap |
Increase Decrease In Accrued Taxes Payable
IncreaseDecreaseInAccruedTaxesPayable
|
120200000 | USD |
| CY2013 | us-gaap |
Increase Decrease In Inventories
IncreaseDecreaseInInventories
|
-119200000 | USD |
| CY2014 | us-gaap |
Increase Decrease In Inventories
IncreaseDecreaseInInventories
|
-100800000 | USD |
| CY2015 | us-gaap |
Increase Decrease In Inventories
IncreaseDecreaseInInventories
|
38600000 | USD |
| CY2014 | us-gaap |
Increase Decrease In Other Current Assets
IncreaseDecreaseInOtherCurrentAssets
|
20600000 | USD |
| CY2013 | us-gaap |
Increase Decrease In Other Current Assets
IncreaseDecreaseInOtherCurrentAssets
|
-15400000 | USD |
| CY2014Q4 | us-gaap |
Jointly Owned Utility Plant Ownership Amount Of Plant Accumulated Depreciation
JointlyOwnedUtilityPlantOwnershipAmountOfPlantAccumulatedDepreciation
|
1679000000 | USD |
| CY2015Q4 | us-gaap |
Jointly Owned Utility Plant Ownership Amount Of Plant Accumulated Depreciation
JointlyOwnedUtilityPlantOwnershipAmountOfPlantAccumulatedDepreciation
|
1773000000 | USD |
| CY2014 | us-gaap |
Interest Expense
InterestExpense
|
868000000 | USD |
| CY2014Q4 | us-gaap |
Jointly Owned Utility Plant Ownership Amount Of Construction Work In Progress
JointlyOwnedUtilityPlantOwnershipAmountOfConstructionWorkInProgress
|
189700000 | USD |
| CY2015Q4 | us-gaap |
Jointly Owned Utility Plant Ownership Amount Of Construction Work In Progress
JointlyOwnedUtilityPlantOwnershipAmountOfConstructionWorkInProgress
|
239600000 | USD |
| CY2015 | us-gaap |
Increase Decrease In Other Current Assets
IncreaseDecreaseInOtherCurrentAssets
|
26700000 | USD |
| CY2013 | us-gaap |
Increase Decrease In Other Current Liabilities
IncreaseDecreaseInOtherCurrentLiabilities
|
-62600000 | USD |
| CY2014 | us-gaap |
Increase Decrease In Other Current Liabilities
IncreaseDecreaseInOtherCurrentLiabilities
|
237300000 | USD |
| CY2015 | us-gaap |
Increase Decrease In Other Current Liabilities
IncreaseDecreaseInOtherCurrentLiabilities
|
-49100000 | USD |
| CY2013 | us-gaap |
Increase Decrease In Other Noncurrent Assets
IncreaseDecreaseInOtherNoncurrentAssets
|
196800000 | USD |
| CY2014 | us-gaap |
Increase Decrease In Other Noncurrent Assets
IncreaseDecreaseInOtherNoncurrentAssets
|
-35600000 | USD |
| CY2015 | us-gaap |
Increase Decrease In Other Noncurrent Assets
IncreaseDecreaseInOtherNoncurrentAssets
|
105700000 | USD |
| CY2013 | us-gaap |
Increase Decrease In Other Noncurrent Liabilities
IncreaseDecreaseInOtherNoncurrentLiabilities
|
-152300000 | USD |
| CY2014 | us-gaap |
Increase Decrease In Other Noncurrent Liabilities
IncreaseDecreaseInOtherNoncurrentLiabilities
|
256100000 | USD |
| CY2015 | us-gaap |
Increase Decrease In Other Noncurrent Liabilities
IncreaseDecreaseInOtherNoncurrentLiabilities
|
-89000000 | USD |
| CY2013 | us-gaap |
Interest Expense
InterestExpense
|
890000000 | USD |
| CY2015 | us-gaap |
Interest Expense
InterestExpense
|
873900000 | USD |
| CY2013 | us-gaap |
Interest Paid Net
InterestPaidNet
|
882100000 | USD |
| CY2014 | us-gaap |
Interest Paid Net
InterestPaidNet
|
838500000 | USD |
| CY2015 | us-gaap |
Interest Paid Net
InterestPaidNet
|
857200000 | USD |
| CY2014Q4 | us-gaap |
Interest Payable Current
InterestPayableCurrent
|
238300000 | USD |
| CY2015Q4 | us-gaap |
Interest Payable Current
InterestPayableCurrent
|
226900000 | USD |
| CY2014Q4 | us-gaap |
Inventory Raw Materials
InventoryRawMaterials
|
580800000 | USD |
| CY2015Q4 | us-gaap |
Inventory Raw Materials
InventoryRawMaterials
|
600800000 | USD |
| CY2013 | us-gaap |
Investment Income Net
InvestmentIncomeNet
|
57900000 | USD |
| CY2014 | us-gaap |
Investment Income Net
InvestmentIncomeNet
|
7400000 | USD |
| CY2015 | us-gaap |
Investment Income Net
InvestmentIncomeNet
|
7900000 | USD |
| CY2014Q4 | us-gaap |
Investment Owned At Cost
InvestmentOwnedAtCost
|
373300000 | USD |
| CY2015Q4 | us-gaap |
Investment Owned At Cost
InvestmentOwnedAtCost
|
375800000 | USD |
| CY2014Q4 | us-gaap |
Investment Owned Unrecognized Unrealized Appreciation
InvestmentOwnedUnrecognizedUnrealizedAppreciation
|
12300000 | USD |
| CY2015Q4 | us-gaap |
Investment Owned Unrecognized Unrealized Appreciation
InvestmentOwnedUnrecognizedUnrealizedAppreciation
|
11700000 | USD |
| CY2014Q4 | us-gaap |
Investment Owned Unrecognized Unrealized Depreciation
InvestmentOwnedUnrecognizedUnrealizedDepreciation
|
0 | USD |
| CY2015Q4 | us-gaap |
Investment Owned Unrecognized Unrealized Depreciation
InvestmentOwnedUnrecognizedUnrealizedDepreciation
|
700000 | USD |
| CY2014Q4 | us-gaap |
Jointly Owned Utility Plant Gross Ownership Amount Of Plant In Service
JointlyOwnedUtilityPlantGrossOwnershipAmountOfPlantInService
|
4824200000 | USD |
| CY2015Q4 | us-gaap |
Jointly Owned Utility Plant Gross Ownership Amount Of Plant In Service
JointlyOwnedUtilityPlantGrossOwnershipAmountOfPlantInService
|
4917300000 | USD |
| CY2013 | us-gaap |
Lease And Rental Expense
LeaseAndRentalExpense
|
326600000 | USD |
| CY2014 | us-gaap |
Lease And Rental Expense
LeaseAndRentalExpense
|
303900000 | USD |
| CY2015 | us-gaap |
Lease And Rental Expense
LeaseAndRentalExpense
|
292600000 | USD |
| CY2014Q4 | us-gaap |
Liabilities
Liabilities
|
42720100000 | USD |
| CY2015Q4 | us-gaap |
Liabilities
Liabilities
|
43778200000 | USD |
| CY2014Q4 | us-gaap |
Liabilities And Stockholders Equity
LiabilitiesAndStockholdersEquity
|
59544600000 | USD |
| CY2015Q4 | us-gaap |
Liabilities And Stockholders Equity
LiabilitiesAndStockholdersEquity
|
61683100000 | USD |
| CY2014Q4 | us-gaap |
Liabilities Current
LiabilitiesCurrent
|
7966600000 | USD |
| CY2015Q4 | us-gaap |
Liabilities Current
LiabilitiesCurrent
|
7108500000 | USD |
| CY2013 | us-gaap |
Payments To Acquire Short Term Investments
PaymentsToAcquireShortTermInvestments
|
17400000 | USD |
| CY2014Q4 | us-gaap |
Liabilities Noncurrent
LiabilitiesNoncurrent
|
34753500000 | USD |
| CY2015Q4 | us-gaap |
Liabilities Noncurrent
LiabilitiesNoncurrent
|
36669700000 | USD |
| CY2015 | us-gaap |
Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions
UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions
|
0 | USD |
| CY2014Q4 | us-gaap |
Liabilities Of Disposal Group Including Discontinued Operation
LiabilitiesOfDisposalGroupIncludingDiscontinuedOperation
|
434800000 | USD |
| CY2014Q4 | us-gaap |
Liabilities Of Disposal Group Including Discontinued Operation Current
LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrent
|
84800000 | USD |
| CY2015Q4 | us-gaap |
Liabilities Of Disposal Group Including Discontinued Operation Current
LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrent
|
0 | USD |
| CY2014Q4 | us-gaap |
Liabilities Of Disposal Group Including Discontinued Operation Noncurrent
LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationNoncurrent
|
350000000 | USD |
| CY2015Q4 | us-gaap |
Liabilities Of Disposal Group Including Discontinued Operation Noncurrent
LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationNoncurrent
|
0 | USD |
| CY2014Q4 | us-gaap |
Long Term Debt
LongTermDebt
|
18512400000 | USD |
| CY2015Q4 | us-gaap |
Long Term Debt
LongTermDebt
|
19572700000 | USD |
| CY2014Q4 | us-gaap |
Long Term Debt Current
LongTermDebtCurrent
|
2500400000 | USD |
| CY2015Q4 | us-gaap |
Long Term Debt Current
LongTermDebtCurrent
|
1831800000 | USD |
| CY2014Q4 | us-gaap |
Long Term Debt Fair Value
LongTermDebtFairValue
|
20960500000 | USD |
| CY2015Q4 | us-gaap |
Long Term Debt Fair Value
LongTermDebtFairValue
|
21201300000 | USD |
| CY2015Q4 | us-gaap |
Long Term Debt Maturities Repayments Of Principal After Year Five
LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive
|
11262400000 | USD |
| CY2015Q4 | us-gaap |
Long Term Debt Maturities Repayments Of Principal In Next Twelve Months
LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths
|
1831800000 | USD |
| CY2015Q4 | us-gaap |
Long Term Debt Maturities Repayments Of Principal In Year Five
LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive
|
368200000 | USD |
| CY2015Q4 | us-gaap |
Long Term Debt Maturities Repayments Of Principal In Year Four
LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour
|
1813200000 | USD |
| CY2015Q4 | us-gaap |
Long Term Debt Maturities Repayments Of Principal In Year Three
LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree
|
1726900000 | USD |
| CY2015Q4 | us-gaap |
Long Term Debt Maturities Repayments Of Principal In Year Two
LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo
|
2689600000 | USD |
| CY2014Q4 | us-gaap |
Long Term Debt Noncurrent
LongTermDebtNoncurrent
|
16012000000 | USD |
| CY2015Q4 | us-gaap |
Long Term Debt Noncurrent
LongTermDebtNoncurrent
|
17740900000 | USD |
| CY2014Q4 | us-gaap |
Longterm Pollution Control Bond Current And Noncurrent
LongtermPollutionControlBondCurrentAndNoncurrent
|
1951800000 | USD |
| CY2015Q4 | us-gaap |
Longterm Pollution Control Bond Current And Noncurrent
LongtermPollutionControlBondCurrentAndNoncurrent
|
1784800000 | USD |
| CY2014Q4 | us-gaap |
Margin Deposit Assets
MarginDepositAssets
|
95200000 | USD |
| CY2015Q4 | us-gaap |
Margin Deposit Assets
MarginDepositAssets
|
107300000 | USD |
| CY2015 | us-gaap |
Maximum Length Of Time Hedged In Price Risk Cash Flow Hedge1
MaximumLengthOfTimeHedgedInPriceRiskCashFlowHedge1
|
P144M | |
| CY2014Q4 | us-gaap |
Minority Interest
MinorityInterest
|
4300000 | USD |
| CY2015Q4 | us-gaap |
Minority Interest
MinorityInterest
|
13200000 | USD |
| CY2014Q4 | us-gaap |
Multiemployer Plans Withdrawal Obligation
MultiemployerPlansWithdrawalObligation
|
40000000 | USD |
| CY2015Q4 | us-gaap |
Multiemployer Plans Withdrawal Obligation
MultiemployerPlansWithdrawalObligation
|
31000000 | USD |
| CY2013 | us-gaap |
Net Cash Provided By Used In Financing Activities
NetCashProvidedByUsedInFinancingActivities
|
-438700000 | USD |
| CY2014 | us-gaap |
Net Cash Provided By Used In Financing Activities
NetCashProvidedByUsedInFinancingActivities
|
-150900000 | USD |
| CY2015 | us-gaap |
Net Cash Provided By Used In Financing Activities
NetCashProvidedByUsedInFinancingActivities
|
-661700000 | USD |
| CY2013 | us-gaap |
Net Cash Provided By Used In Investing Activities
NetCashProvidedByUsedInInvestingActivities
|
-3817800000 | USD |
| CY2014 | us-gaap |
Net Cash Provided By Used In Investing Activities
NetCashProvidedByUsedInInvestingActivities
|
-4405900000 | USD |
| CY2015 | us-gaap |
Net Cash Provided By Used In Investing Activities
NetCashProvidedByUsedInInvestingActivities
|
-4564000000 | USD |
| CY2013 | us-gaap |
Net Cash Provided By Used In Operating Activities
NetCashProvidedByUsedInOperatingActivities
|
4096200000 | USD |
| CY2014 | us-gaap |
Net Cash Provided By Used In Operating Activities
NetCashProvidedByUsedInOperatingActivities
|
4602400000 | USD |
| CY2015 | us-gaap |
Net Cash Provided By Used In Operating Activities
NetCashProvidedByUsedInOperatingActivities
|
4748700000 | USD |
| CY2013 | us-gaap |
Net Income Loss Attributable To Noncontrolling Interest
NetIncomeLossAttributableToNoncontrollingInterest
|
3700000 | USD |
| CY2014 | us-gaap |
Net Income Loss Attributable To Noncontrolling Interest
NetIncomeLossAttributableToNoncontrollingInterest
|
4200000 | USD |
| CY2015 | us-gaap |
Net Income Loss Attributable To Noncontrolling Interest
NetIncomeLossAttributableToNoncontrollingInterest
|
5200000 | USD |
| CY2013 | us-gaap |
Net Income Loss Available To Common Stockholders Basic
NetIncomeLossAvailableToCommonStockholdersBasic
|
1480500000 | USD |
| CY2014Q1 | us-gaap |
Net Income Loss Available To Common Stockholders Basic
NetIncomeLossAvailableToCommonStockholdersBasic
|
559800000 | USD |
| CY2014Q2 | us-gaap |
Net Income Loss Available To Common Stockholders Basic
NetIncomeLossAvailableToCommonStockholdersBasic
|
389900000 | USD |
| CY2014Q3 | us-gaap |
Net Income Loss Available To Common Stockholders Basic
NetIncomeLossAvailableToCommonStockholdersBasic
|
493200000 | USD |
| CY2014Q4 | us-gaap |
Property Plant And Equipment Gross
PropertyPlantAndEquipmentGross
|
63605900000 | USD |
| CY2015 | us-gaap |
Other Comprehensive Income Loss Available For Sale Securities Tax
OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax
|
-300000 | USD |
| CY2014Q4 | us-gaap |
Net Income Loss Available To Common Stockholders Basic
NetIncomeLossAvailableToCommonStockholdersBasic
|
190900000 | USD |
| CY2014 | us-gaap |
Net Income Loss Available To Common Stockholders Basic
NetIncomeLossAvailableToCommonStockholdersBasic
|
1633800000 | USD |
| CY2015 | us-gaap |
Net Income Loss Available To Common Stockholders Basic
NetIncomeLossAvailableToCommonStockholdersBasic
|
2047100000 | USD |
| CY2015Q1 | us-gaap |
Net Income Loss Available To Common Stockholders Basic
NetIncomeLossAvailableToCommonStockholdersBasic
|
629200000 | USD |
| CY2013 | us-gaap |
Noncash Or Part Noncash Acquisition Fixed Assets Acquired1
NoncashOrPartNoncashAcquisitionFixedAssetsAcquired1
|
0 | USD |
| CY2014 | us-gaap |
Noncash Or Part Noncash Acquisition Fixed Assets Acquired1
NoncashOrPartNoncashAcquisitionFixedAssetsAcquired1
|
0 | USD |
| CY2015 | us-gaap |
Noncash Or Part Noncash Acquisition Fixed Assets Acquired1
NoncashOrPartNoncashAcquisitionFixedAssetsAcquired1
|
10500000 | USD |
| CY2015 | us-gaap |
Other Asset Impairment Charges
OtherAssetImpairmentCharges
|
0 | USD |
| CY2014Q4 | us-gaap |
Obligation To Return Securities Received As Collateral
ObligationToReturnSecuritiesReceivedAsCollateral
|
35200000 | USD |
| CY2015Q4 | us-gaap |
Obligation To Return Securities Received As Collateral
ObligationToReturnSecuritiesReceivedAsCollateral
|
44400000 | USD |
| CY2013 | us-gaap |
Operating Expenses
OperatingExpenses
|
11991000000 | USD |
| CY2014 | us-gaap |
Operating Expenses
OperatingExpenses
|
13251200000 | USD |
| CY2015 | us-gaap |
Operating Expenses
OperatingExpenses
|
13119700000 | USD |
| CY2013 | us-gaap |
Operating Income Loss
OperatingIncomeLoss
|
2822500000 | USD |
| CY2014Q1 | us-gaap |
Operating Income Loss
OperatingIncomeLoss
|
1032300000 | USD |
| CY2014Q2 | us-gaap |
Operating Income Loss
OperatingIncomeLoss
|
760700000 | USD |
| CY2014Q4 | us-gaap |
Other Assets Noncurrent
OtherAssetsNoncurrent
|
2131300000 | USD |
| CY2015Q2 | us-gaap |
Net Income Loss Available To Common Stockholders Basic
NetIncomeLossAvailableToCommonStockholdersBasic
|
430000000 | USD |
| CY2015Q3 | us-gaap |
Net Income Loss Available To Common Stockholders Basic
NetIncomeLossAvailableToCommonStockholdersBasic
|
518300000 | USD |
| CY2015Q4 | us-gaap |
Net Income Loss Available To Common Stockholders Basic
NetIncomeLossAvailableToCommonStockholdersBasic
|
469600000 | USD |
| CY2014Q3 | us-gaap |
Operating Income Loss
OperatingIncomeLoss
|
904900000 | USD |
| CY2014Q4 | us-gaap |
Operating Income Loss
OperatingIncomeLoss
|
429500000 | USD |
| CY2014 | us-gaap |
Operating Income Loss
OperatingIncomeLoss
|
3127400000 | USD |
| CY2015Q1 | us-gaap |
Operating Income Loss
OperatingIncomeLoss
|
1102800000 | USD |
| CY2015Q2 | us-gaap |
Operating Income Loss
OperatingIncomeLoss
|
804100000 | USD |
| CY2015Q3 | us-gaap |
Operating Income Loss
OperatingIncomeLoss
|
960200000 | USD |
| CY2015Q4 | us-gaap |
Operating Income Loss
OperatingIncomeLoss
|
466400000 | USD |
| CY2015 | us-gaap |
Operating Income Loss
OperatingIncomeLoss
|
3333500000 | USD |
| CY2015Q4 | us-gaap |
Operating Leases Future Minimum Payments Due
OperatingLeasesFutureMinimumPaymentsDue
|
1554000000 | USD |
| CY2015Q4 | us-gaap |
Operating Leases Future Minimum Payments Due Current
OperatingLeasesFutureMinimumPaymentsDueCurrent
|
239100000 | USD |
| CY2015Q4 | us-gaap |
Operating Leases Future Minimum Payments Due In Five Years
OperatingLeasesFutureMinimumPaymentsDueInFiveYears
|
202800000 | USD |
| CY2015Q4 | us-gaap |
Operating Leases Future Minimum Payments Due In Four Years
OperatingLeasesFutureMinimumPaymentsDueInFourYears
|
211200000 | USD |
| CY2015Q4 | us-gaap |
Operating Leases Future Minimum Payments Due In Three Years
OperatingLeasesFutureMinimumPaymentsDueInThreeYears
|
219900000 | USD |
| CY2015Q4 | us-gaap |
Operating Leases Future Minimum Payments Due In Two Years
OperatingLeasesFutureMinimumPaymentsDueInTwoYears
|
228700000 | USD |
| CY2015Q4 | us-gaap |
Operating Leases Future Minimum Payments Due Thereafter
OperatingLeasesFutureMinimumPaymentsDueThereafter
|
452300000 | USD |
| CY2013 | us-gaap |
Other Asset Impairment Charges
OtherAssetImpairmentCharges
|
226400000 | USD |
| CY2014 | us-gaap |
Other Asset Impairment Charges
OtherAssetImpairmentCharges
|
0 | USD |
| CY2015Q4 | us-gaap |
Other Assets Noncurrent
OtherAssetsNoncurrent
|
2106600000 | USD |
| CY2013 | us-gaap |
Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Net Of Tax
OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax
|
176600000 | USD |
| CY2014 | us-gaap |
Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Net Of Tax
OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax
|
1100000 | USD |
| CY2015 | us-gaap |
Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Net Of Tax
OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax
|
-25700000 | USD |
| CY2013 | us-gaap |
Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Tax
OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax
|
95100000 | USD |
| CY2014 | us-gaap |
Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Tax
OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax
|
600000 | USD |
| CY2015 | us-gaap |
Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Tax
OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax
|
-13900000 | USD |
| CY2013 | us-gaap |
Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax
OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax
|
2600000 | USD |
| CY2014 | us-gaap |
Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax
OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax
|
900000 | USD |
| CY2015 | us-gaap |
Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax
OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax
|
-600000 | USD |
| CY2013 | us-gaap |
Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax
OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax
|
15500000 | USD |
| CY2014 | us-gaap |
Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax
OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax
|
-4800000 | USD |
| CY2014 | us-gaap |
Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax
OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax
|
5300000 | USD |
| CY2015Q4 | us-gaap |
Other Long Term Debt
OtherLongTermDebt
|
1604500000 | USD |
| CY2014Q4 | us-gaap |
Other Notes Payable
OtherNotesPayable
|
274100000 | USD |
| CY2015Q4 | us-gaap |
Other Notes Payable
OtherNotesPayable
|
264700000 | USD |
| CY2015 | us-gaap |
Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax
OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax
|
-1200000 | USD |
| CY2013 | us-gaap |
Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax
OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax
|
-11800000 | USD |
| CY2014Q4 | us-gaap |
Other Receivables
OtherReceivables
|
85300000 | USD |
| CY2014 | us-gaap |
Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax
OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax
|
-2600000 | USD |
| CY2015Q4 | us-gaap |
Other Receivables
OtherReceivables
|
82100000 | USD |
| CY2013 | us-gaap |
Other Sales Revenue Net
OtherSalesRevenueNet
|
-20200000 | USD |
| CY2013 | us-gaap |
Other Comprehensive Income Loss Available For Sale Securities Tax
OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax
|
1400000 | USD |
| CY2015 | us-gaap |
Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax
OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax
|
-600000 | USD |
| CY2014Q4 | us-gaap |
Other Inventory Supplies
OtherInventorySupplies
|
735800000 | USD |
| CY2014 | us-gaap |
Other Sales Revenue Net
OtherSalesRevenueNet
|
44900000 | USD |
| CY2015Q4 | us-gaap |
Other Inventory Supplies
OtherInventorySupplies
|
738600000 | USD |
| CY2014Q4 | us-gaap |
Other Liabilities Current
OtherLiabilitiesCurrent
|
1204700000 | USD |
| CY2015Q4 | us-gaap |
Other Liabilities Current
OtherLiabilitiesCurrent
|
1305100000 | USD |
| CY2014Q4 | us-gaap |
Other Liabilities Noncurrent
OtherLiabilitiesNoncurrent
|
895800000 | USD |
| CY2015 | us-gaap |
Other Sales Revenue Net
OtherSalesRevenueNet
|
124600000 | USD |
| CY2013 | us-gaap |
Payments For Construction In Process
PaymentsForConstructionInProcess
|
3616400000 | USD |
| CY2014 | us-gaap |
Payments For Construction In Process
PaymentsForConstructionInProcess
|
4130000000 | USD |
| CY2015 | us-gaap |
Payments For Construction In Process
PaymentsForConstructionInProcess
|
4508000000 | USD |
| CY2015 | us-gaap |
Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax
OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax
|
-4900000 | USD |
| CY2013 | us-gaap |
Other Comprehensive Income Loss Derivatives Qualifying As Hedges Tax
OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesTax
|
8300000 | USD |
| CY2014 | us-gaap |
Other Comprehensive Income Loss Derivatives Qualifying As Hedges Tax
OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesTax
|
2900000 | USD |
| CY2015 | us-gaap |
Other Comprehensive Income Loss Derivatives Qualifying As Hedges Tax
OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesTax
|
-2600000 | USD |
| CY2013 | us-gaap |
Other Comprehensive Income Loss Net Of Tax
OtherComprehensiveIncomeLossNetOfTax
|
216600000 | USD |
| CY2014 | us-gaap |
Other Comprehensive Income Loss Net Of Tax
OtherComprehensiveIncomeLossNetOfTax
|
12100000 | USD |
| CY2015 | us-gaap |
Other Comprehensive Income Loss Net Of Tax
OtherComprehensiveIncomeLossNetOfTax
|
-30000000 | USD |
| CY2013 | us-gaap |
Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax
OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax
|
-21900000 | USD |
| CY2015Q4 | us-gaap |
Other Liabilities Noncurrent
OtherLiabilitiesNoncurrent
|
890600000 | USD |
| CY2014Q4 | us-gaap |
Other Long Term Debt
OtherLongTermDebt
|
1098000000 | USD |
| CY2013 | us-gaap |
Payments For Nuclear Fuel
PaymentsForNuclearFuel
|
153700000 | USD |
| CY2014 | us-gaap |
Payments For Nuclear Fuel
PaymentsForNuclearFuel
|
116200000 | USD |
| CY2015 | us-gaap |
Payments For Nuclear Fuel
PaymentsForNuclearFuel
|
92000000 | USD |
| CY2013 | us-gaap |
Payments For Proceeds From Other Investing Activities
PaymentsForProceedsFromOtherInvestingActivities
|
7500000 | USD |
| CY2014 | us-gaap |
Payments For Proceeds From Other Investing Activities
PaymentsForProceedsFromOtherInvestingActivities
|
7600000 | USD |
| CY2015 | us-gaap |
Payments For Proceeds From Other Investing Activities
PaymentsForProceedsFromOtherInvestingActivities
|
-96000000 | USD |
| CY2013 | us-gaap |
Payments Of Dividends Common Stock
PaymentsOfDividendsCommonStock
|
954300000 | USD |
| CY2014 | us-gaap |
Payments Of Dividends Common Stock
PaymentsOfDividendsCommonStock
|
997600000 | USD |
| CY2015 | us-gaap |
Payments Of Dividends Common Stock
PaymentsOfDividendsCommonStock
|
1059000000 | USD |
| CY2013 | us-gaap |
Payments To Acquire Investments
PaymentsToAcquireInvestments
|
927400000 | USD |
| CY2014 | us-gaap |
Payments To Acquire Investments
PaymentsToAcquireInvestments
|
1088000000 | USD |
| CY2015 | us-gaap |
Payments To Acquire Investments
PaymentsToAcquireInvestments
|
2282700000 | USD |
| CY2013 | us-gaap |
Payments To Acquire Property Plant And Equipment
PaymentsToAcquirePropertyPlantAndEquipment
|
32000000 | USD |
| CY2014 | us-gaap |
Payments To Acquire Property Plant And Equipment
PaymentsToAcquirePropertyPlantAndEquipment
|
64800000 | USD |
| CY2015Q4 | us-gaap |
Securitized Regulatory Transition Assets Noncurrent
SecuritizedRegulatoryTransitionAssetsNoncurrent
|
1749900000 | USD |
| CY2015Q4 | us-gaap |
Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Available For Grant
ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant
|
10000000 | shares |
| CY2014 | us-gaap |
Payments To Acquire Short Term Investments
PaymentsToAcquireShortTermInvestments
|
1600000 | USD |
| CY2015 | us-gaap |
Payments To Acquire Short Term Investments
PaymentsToAcquireShortTermInvestments
|
10700000 | USD |
| CY2014 | us-gaap |
Proceeds From Sale Maturity And Collections Of Investments
ProceedsFromSaleMaturityAndCollectionsOfInvestments
|
1031800000 | USD |
| CY2015 | us-gaap |
Proceeds From Issuance Of Common Stock
ProceedsFromIssuanceOfCommonStock
|
81600000 | USD |
| CY2013 | us-gaap |
Proceeds From Issuance Of Long Term Debt
ProceedsFromIssuanceOfLongTermDebt
|
3206600000 | USD |
| CY2014 | us-gaap |
Proceeds From Issuance Of Long Term Debt
ProceedsFromIssuanceOfLongTermDebt
|
2067000000 | USD |
| CY2015 | us-gaap |
Proceeds From Issuance Of Long Term Debt
ProceedsFromIssuanceOfLongTermDebt
|
3436600000 | USD |
| CY2013 | us-gaap |
Proceeds From Payments For Other Financing Activities
ProceedsFromPaymentsForOtherFinancingActivities
|
5200000 | USD |
| CY2014 | us-gaap |
Proceeds From Payments For Other Financing Activities
ProceedsFromPaymentsForOtherFinancingActivities
|
5700000 | USD |
| CY2013 | us-gaap |
Proceeds From Issuance Of Common Stock
ProceedsFromIssuanceOfCommonStock
|
83200000 | USD |
| CY2014 | us-gaap |
Proceeds From Issuance Of Common Stock
ProceedsFromIssuanceOfCommonStock
|
73600000 | USD |
| CY2015 | us-gaap |
Proceeds From Payments For Other Financing Activities
ProceedsFromPaymentsForOtherFinancingActivities
|
14700000 | USD |
| CY2013 | us-gaap |
Proceeds From Repayments Of Short Term Debt Maturing In Three Months Or Less
ProceedsFromRepaymentsOfShortTermDebtMaturingInThreeMonthsOrLess
|
-221000000 | USD |
| CY2015Q4 | us-gaap |
Property Plant And Equipment Gross
PropertyPlantAndEquipmentGross
|
65481400000 | USD |
| CY2014 | us-gaap |
Proceeds From Repayments Of Short Term Debt Maturing In Three Months Or Less
ProceedsFromRepaymentsOfShortTermDebtMaturingInThreeMonthsOrLess
|
589000000 | USD |
| CY2015 | us-gaap |
Proceeds From Repayments Of Short Term Debt Maturing In Three Months Or Less
ProceedsFromRepaymentsOfShortTermDebtMaturingInThreeMonthsOrLess
|
-546000000 | USD |
| CY2013 | us-gaap |
Proceeds From Sale Maturity And Collections Of Investments
ProceedsFromSaleMaturityAndCollectionsOfInvestments
|
858400000 | USD |
| CY2013 | us-gaap |
Pension And Other Postretirement Benefit Expense
PensionAndOtherPostretirementBenefitExpense
|
167700000 | USD |
| CY2014 | us-gaap |
Pension And Other Postretirement Benefit Expense
PensionAndOtherPostretirementBenefitExpense
|
77200000 | USD |
| CY2015 | us-gaap |
Pension And Other Postretirement Benefit Expense
PensionAndOtherPostretirementBenefitExpense
|
33200000 | USD |
| CY2013 | us-gaap |
Pension Contributions
PensionContributions
|
0 | USD |
| CY2014 | us-gaap |
Pension Contributions
PensionContributions
|
70300000 | USD |
| CY2015 | us-gaap |
Pension Contributions
PensionContributions
|
91800000 | USD |
| CY2014Q4 | us-gaap |
Prepaid Expense And Other Assets Current
PrepaidExpenseAndOtherAssetsCurrent
|
275200000 | USD |
| CY2015Q4 | us-gaap |
Prepaid Expense And Other Assets Current
PrepaidExpenseAndOtherAssetsCurrent
|
172400000 | USD |
| CY2014Q4 | us-gaap |
Principal Amount Outstanding On Loans Held For Sale Or Securitization
PrincipalAmountOutstandingOnLoansHeldForSaleOrSecuritization
|
744000000 | USD |
| CY2015Q4 | us-gaap |
Principal Amount Outstanding On Loans Held For Sale Or Securitization
PrincipalAmountOutstandingOnLoansHeldForSaleOrSecuritization
|
675000000 | USD |
| CY2013 | us-gaap |
Proceeds From Insurance Settlement Investing Activities
ProceedsFromInsuranceSettlementInvestingActivities
|
72000000 | USD |
| CY2014 | us-gaap |
Proceeds From Insurance Settlement Investing Activities
ProceedsFromInsuranceSettlementInvestingActivities
|
0 | USD |
| CY2015 | us-gaap |
Proceeds From Insurance Settlement Investing Activities
ProceedsFromInsuranceSettlementInvestingActivities
|
0 | USD |
| CY2015 | us-gaap |
Proceeds From Sale Maturity And Collections Of Investments
ProceedsFromSaleMaturityAndCollectionsOfInvestments
|
2218400000 | USD |
| CY2013 | us-gaap |
Proceeds From Sale Of Short Term Investments
ProceedsFromSaleOfShortTermInvestments
|
0 | USD |
| CY2014 | us-gaap |
Proceeds From Sale Of Short Term Investments
ProceedsFromSaleOfShortTermInvestments
|
0 | USD |
| CY2015 | us-gaap |
Proceeds From Sale Of Short Term Investments
ProceedsFromSaleOfShortTermInvestments
|
0 | USD |
| CY2013 | us-gaap |
Profit Loss
ProfitLoss
|
1484200000 | USD |
| CY2014Q1 | us-gaap |
Profit Loss
ProfitLoss
|
561000000 | USD |
| CY2014Q2 | us-gaap |
Profit Loss
ProfitLoss
|
391100000 | USD |
| CY2014Q3 | us-gaap |
Profit Loss
ProfitLoss
|
494400000 | USD |
| CY2014Q4 | us-gaap |
Profit Loss
ProfitLoss
|
191500000 | USD |
| CY2014 | us-gaap |
Profit Loss
ProfitLoss
|
1638000000 | USD |
| CY2015Q1 | us-gaap |
Profit Loss
ProfitLoss
|
630700000 | USD |
| CY2015Q2 | us-gaap |
Profit Loss
ProfitLoss
|
431300000 | USD |
| CY2015Q3 | us-gaap |
Profit Loss
ProfitLoss
|
519600000 | USD |
| CY2015Q4 | us-gaap |
Profit Loss
ProfitLoss
|
470700000 | USD |
| CY2015 | us-gaap |
Profit Loss
ProfitLoss
|
2052300000 | USD |
| CY2013 | us-gaap |
Property Plant And Equipment Additions
PropertyPlantAndEquipmentAdditions
|
3648400000 | USD |
| CY2014 | us-gaap |
Property Plant And Equipment Additions
PropertyPlantAndEquipmentAdditions
|
4194800000 | USD |
| CY2015 | us-gaap |
Property Plant And Equipment Additions
PropertyPlantAndEquipmentAdditions
|
4513300000 | USD |
| CY2014Q4 | us-gaap |
Property Plant And Equipment Net
PropertyPlantAndEquipmentNet
|
43635100000 | USD |
| CY2015Q4 | us-gaap |
Property Plant And Equipment Net
PropertyPlantAndEquipmentNet
|
46133200000 | USD |
| CY2013 | us-gaap |
Public Utilities Allowance For Funds Used During Construction Capitalized Cost Of Equity
PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity
|
72700000 | USD |
| CY2013 | us-gaap |
Public Utilities Allowance For Funds Used During Construction Capitalized Interest
PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedInterest
|
39800000 | USD |
| CY2014 | us-gaap |
Public Utilities Allowance For Funds Used During Construction Capitalized Interest
PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedInterest
|
44500000 | USD |
| CY2015 | us-gaap |
Public Utilities Allowance For Funds Used During Construction Capitalized Interest
PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedInterest
|
61300000 | USD |
| CY2014Q4 | us-gaap |
Public Utilities Property Plant And Equipment Distribution
PublicUtilitiesPropertyPlantAndEquipmentDistribution
|
17156600000 | USD |
| CY2015Q4 | us-gaap |
Public Utilities Property Plant And Equipment Distribution
PublicUtilitiesPropertyPlantAndEquipmentDistribution
|
18046900000 | USD |
| CY2014Q4 | us-gaap |
Public Utilities Property Plant And Equipment Generation Or Processing
PublicUtilitiesPropertyPlantAndEquipmentGenerationOrProcessing
|
25727500000 | USD |
| CY2015Q4 | us-gaap |
Public Utilities Property Plant And Equipment Generation Or Processing
PublicUtilitiesPropertyPlantAndEquipmentGenerationOrProcessing
|
25559800000 | USD |
| CY2014 | us-gaap |
Public Utilities Allowance For Funds Used During Construction Capitalized Cost Of Equity
PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity
|
102900000 | USD |
| CY2015 | us-gaap |
Public Utilities Allowance For Funds Used During Construction Capitalized Cost Of Equity
PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity
|
131900000 | USD |
| CY2014Q4 | us-gaap |
Public Utilities Property Plant And Equipment Other Property Plant And Equipment
PublicUtilitiesPropertyPlantAndEquipmentOtherPropertyPlantAndEquipment
|
5073100000 | USD |
| CY2014 | us-gaap |
Unrealized Gain Loss On Derivatives
UnrealizedGainLossOnDerivatives
|
53100000 | USD |
| CY2015 | us-gaap |
Unrealized Gain Loss On Derivatives
UnrealizedGainLossOnDerivatives
|
-52500000 | USD |
| CY2015Q2 | us-gaap |
Revenues
Revenues
|
3826700000 | USD |
| CY2015Q3 | us-gaap |
Revenues
Revenues
|
4431400000 | USD |
| CY2015Q4 | us-gaap |
Revenues
Revenues
|
3614700000 | USD |
| CY2015 | us-gaap |
Revenues
Revenues
|
16453200000 | USD |
| CY2015Q4 | us-gaap |
Public Utilities Property Plant And Equipment Other Property Plant And Equipment
PublicUtilitiesPropertyPlantAndEquipmentOtherPropertyPlantAndEquipment
|
3722900000 | USD |
| CY2014Q4 | us-gaap |
Public Utilities Property Plant And Equipment Transmission
PublicUtilitiesPropertyPlantAndEquipmentTransmission
|
12433400000 | USD |
| CY2015Q4 | us-gaap |
Public Utilities Property Plant And Equipment Transmission
PublicUtilitiesPropertyPlantAndEquipmentTransmission
|
14247900000 | USD |
| CY2013 | us-gaap |
Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax
ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax
|
-24400000 | USD |
| CY2014 | us-gaap |
Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax
ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax
|
-19900000 | USD |
| CY2015 | us-gaap |
Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax
ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax
|
9300000 | USD |
| CY2015Q4 | us-gaap |
Recorded Unconditional Purchase Obligation
RecordedUnconditionalPurchaseObligation
|
10488800000 | USD |
| CY2015Q4 | us-gaap |
Recorded Unconditional Purchase Obligation Due After Fifth Year
RecordedUnconditionalPurchaseObligationDueAfterFifthYear
|
3034300000 | USD |
| CY2015Q4 | us-gaap |
Recorded Unconditional Purchase Obligation Due Within One Year
RecordedUnconditionalPurchaseObligationDueWithinOneYear
|
2419600000 | USD |
| CY2014Q4 | us-gaap |
Regulatory Assets Current
RegulatoryAssetsCurrent
|
126600000 | USD |
| CY2015Q4 | us-gaap |
Regulatory Assets Current
RegulatoryAssetsCurrent
|
115200000 | USD |
| CY2014Q4 | us-gaap |
Regulatory Assets Noncurrent
RegulatoryAssetsNoncurrent
|
4263700000 | USD |
| CY2015Q4 | us-gaap |
Regulatory Assets Noncurrent
RegulatoryAssetsNoncurrent
|
5140300000 | USD |
| CY2014Q4 | us-gaap |
Regulatory Liability Current
RegulatoryLiabilityCurrent
|
55200000 | USD |
| CY2015Q4 | us-gaap |
Regulatory Liability Current
RegulatoryLiabilityCurrent
|
113900000 | USD |
| CY2014Q4 | us-gaap |
Regulatory Liability Noncurrent
RegulatoryLiabilityNoncurrent
|
3892400000 | USD |
| CY2015Q4 | us-gaap |
Regulatory Liability Noncurrent
RegulatoryLiabilityNoncurrent
|
3736100000 | USD |
| CY2013 | us-gaap |
Repayments Of Long Term Capital Lease Obligations
RepaymentsOfLongTermCapitalLeaseObligations
|
73200000 | USD |
| CY2014 | us-gaap |
Repayments Of Long Term Capital Lease Obligations
RepaymentsOfLongTermCapitalLeaseObligations
|
111200000 | USD |
| CY2015 | us-gaap |
Repayments Of Long Term Capital Lease Obligations
RepaymentsOfLongTermCapitalLeaseObligations
|
99000000 | USD |
| CY2013 | us-gaap |
Repayments Of Long Term Debt
RepaymentsOfLongTermDebt
|
2595400000 | USD |
| CY2014 | us-gaap |
Repayments Of Long Term Debt
RepaymentsOfLongTermDebt
|
1777400000 | USD |
| CY2015 | us-gaap |
Repayments Of Long Term Debt
RepaymentsOfLongTermDebt
|
2397900000 | USD |
| CY2014Q4 | us-gaap |
Retained Earnings Accumulated Deficit
RetainedEarningsAccumulatedDeficit
|
7406600000 | USD |
| CY2015Q4 | us-gaap |
Retained Earnings Accumulated Deficit
RetainedEarningsAccumulatedDeficit
|
8398300000 | USD |
| CY2013 | us-gaap |
Revenues
Revenues
|
14813500000 | USD |
| CY2014Q1 | us-gaap |
Revenues
Revenues
|
4497500000 | USD |
| CY2014Q2 | us-gaap |
Revenues
Revenues
|
3900600000 | USD |
| CY2014Q3 | us-gaap |
Revenues
Revenues
|
4161400000 | USD |
| CY2014Q4 | us-gaap |
Revenues
Revenues
|
3819100000 | USD |
| CY2014 | us-gaap |
Revenues
Revenues
|
16378600000 | USD |
| CY2015Q1 | us-gaap |
Revenues
Revenues
|
4580400000 | USD |
| CY2013 | us-gaap |
Sale Leaseback Transaction Gross Proceeds Financing Activities
SaleLeasebackTransactionGrossProceedsFinancingActivities
|
110200000 | USD |
| CY2014 | us-gaap |
Sale Leaseback Transaction Gross Proceeds Financing Activities
SaleLeasebackTransactionGrossProceedsFinancingActivities
|
0 | USD |
| CY2015 | us-gaap |
Sale Leaseback Transaction Gross Proceeds Financing Activities
SaleLeasebackTransactionGrossProceedsFinancingActivities
|
0 | USD |
| CY2014Q4 | us-gaap |
Secured Debt
SecuredDebt
|
2360900000 | USD |
| CY2015Q4 | us-gaap |
Secured Debt
SecuredDebt
|
2024000000 | USD |
| CY2014Q4 | us-gaap |
Securities Received As Collateral
SecuritiesReceivedAsCollateral
|
3500000 | USD |
| CY2015Q4 | us-gaap |
Securities Received As Collateral
SecuritiesReceivedAsCollateral
|
5800000 | USD |
| CY2014Q4 | us-gaap |
Securitized Regulatory Transition Assets Noncurrent
SecuritizedRegulatoryTransitionAssetsNoncurrent
|
2072400000 | USD |
| CY2013 | us-gaap |
Stockholders Equity Other
StockholdersEquityOther
|
13200000 | USD |
| CY2014 | us-gaap |
Stockholders Equity Other
StockholdersEquityOther
|
12800000 | USD |
| CY2015 | us-gaap |
Stockholders Equity Other
StockholdersEquityOther
|
29500000 | USD |
| CY2013 | us-gaap |
Taxes Excluding Income And Excise Taxes
TaxesExcludingIncomeAndExciseTaxes
|
881400000 | USD |
| CY2014Q4 | us-gaap |
Short Term Bank Loans And Notes Payable
ShortTermBankLoansAndNotesPayable
|
602000000 | USD |
| CY2014 | us-gaap |
Taxes Excluding Income And Excise Taxes
TaxesExcludingIncomeAndExciseTaxes
|
901300000 | USD |
| CY2015 | us-gaap |
Taxes Excluding Income And Excise Taxes
TaxesExcludingIncomeAndExciseTaxes
|
972600000 | USD |
| CY2014Q4 | us-gaap |
Taxes Payable Current
TaxesPayableCurrent
|
863500000 | USD |
| CY2015Q4 | us-gaap |
Taxes Payable Current
TaxesPayableCurrent
|
979100000 | USD |
| CY2014Q4 | us-gaap |
Transfers Accounted For As Secured Borrowings Assets Carrying Amount
TransfersAccountedForAsSecuredBorrowingsAssetsCarryingAmount
|
987400000 | USD |
| CY2014Q4 | us-gaap |
Stockholders Equity
StockholdersEquity
|
16820200000 | USD |
| CY2015 | us-gaap |
Stock Issued During Period Value New Issues
StockIssuedDuringPeriodValueNewIssues
|
81600000 | USD |
| CY2015Q4 | us-gaap |
Short Term Bank Loans And Notes Payable
ShortTermBankLoansAndNotesPayable
|
125000000 | USD |
| CY2014Q4 | us-gaap |
Short Term Borrowings
ShortTermBorrowings
|
1346000000 | USD |
| CY2015Q4 | us-gaap |
Short Term Borrowings
ShortTermBorrowings
|
800000000 | USD |
| CY2014Q4 | us-gaap |
Short Term Debt Weighted Average Interest Rate
ShortTermDebtWeightedAverageInterestRate
|
0.0022 | |
| CY2015Q4 | us-gaap |
Short Term Debt Weighted Average Interest Rate
ShortTermDebtWeightedAverageInterestRate
|
0.003 | |
| CY2014Q4 | us-gaap |
Short Term Investments
ShortTermInvestments
|
385600000 | USD |
| CY2015Q4 | us-gaap |
Short Term Investments
ShortTermInvestments
|
386800000 | USD |
| CY2015 | us-gaap |
Shortterm Debt Maximum Amount Outstanding During Period
ShorttermDebtMaximumAmountOutstandingDuringPeriod
|
788000000 | USD |
| CY2014Q4 | us-gaap |
Spent Nuclear Fuel Obligation Noncurrent
SpentNuclearFuelObligationNoncurrent
|
265500000 | USD |
| CY2015Q4 | us-gaap |
Spent Nuclear Fuel Obligation Noncurrent
SpentNuclearFuelObligationNoncurrent
|
265600000 | USD |
| CY2013 | us-gaap |
State And Local Income Tax Expense Benefit Continuing Operations
StateAndLocalIncomeTaxExpenseBenefitContinuingOperations
|
52500000 | USD |
| CY2014 | us-gaap |
State And Local Income Tax Expense Benefit Continuing Operations
StateAndLocalIncomeTaxExpenseBenefitContinuingOperations
|
79700000 | USD |
| CY2015 | us-gaap |
State And Local Income Tax Expense Benefit Continuing Operations
StateAndLocalIncomeTaxExpenseBenefitContinuingOperations
|
37500000 | USD |
| CY2013 | us-gaap |
Stock Issued During Period Shares New Issues
StockIssuedDuringPeriodSharesNewIssues
|
2109002 | shares |
| CY2014 | us-gaap |
Stock Issued During Period Shares New Issues
StockIssuedDuringPeriodSharesNewIssues
|
1625195 | shares |
| CY2015 | us-gaap |
Stock Issued During Period Shares New Issues
StockIssuedDuringPeriodSharesNewIssues
|
1650014 | shares |
| CY2013 | us-gaap |
Stock Issued During Period Value New Issues
StockIssuedDuringPeriodValueNewIssues
|
83200000 | USD |
| CY2014 | us-gaap |
Stock Issued During Period Value New Issues
StockIssuedDuringPeriodValueNewIssues
|
73600000 | USD |
| CY2015Q4 | us-gaap |
Stockholders Equity
StockholdersEquity
|
17891700000 | USD |
| CY2012Q4 | us-gaap |
Stockholders Equity Including Portion Attributable To Noncontrolling Interest
StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
|
15237500000 | USD |
| CY2013Q4 | us-gaap |
Stockholders Equity Including Portion Attributable To Noncontrolling Interest
StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
|
16085600000 | USD |
| CY2014Q4 | us-gaap |
Stockholders Equity Including Portion Attributable To Noncontrolling Interest
StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
|
16824500000 | USD |
| CY2015Q4 | us-gaap |
Stockholders Equity Including Portion Attributable To Noncontrolling Interest
StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
|
17904900000 | USD |
| CY2015Q4 | us-gaap |
Transfers Accounted For As Secured Borrowings Assets Carrying Amount
TransfersAccountedForAsSecuredBorrowingsAssetsCarryingAmount
|
940300000 | USD |
| CY2014Q4 | us-gaap |
Transfers Accounted For As Secured Borrowings Associated Liabilities Carrying Amount
TransfersAccountedForAsSecuredBorrowingsAssociatedLiabilitiesCarryingAmount
|
744000000 | USD |
| CY2015Q4 | us-gaap |
Transfers Accounted For As Secured Borrowings Associated Liabilities Carrying Amount
TransfersAccountedForAsSecuredBorrowingsAssociatedLiabilitiesCarryingAmount
|
675000000 | USD |
| CY2012Q4 | us-gaap |
Treasury Stock Shares
TreasuryStockShares
|
20336592 | shares |
| CY2013Q4 | us-gaap |
Treasury Stock Shares
TreasuryStockShares
|
20336592 | shares |
| CY2014Q4 | us-gaap |
Treasury Stock Shares
TreasuryStockShares
|
20336592 | shares |
| CY2015Q4 | us-gaap |
Treasury Stock Shares
TreasuryStockShares
|
20336592 | shares |
| CY2014Q4 | us-gaap |
Unbilled Receivables Current
UnbilledReceivablesCurrent
|
146100000 | USD |
| CY2015Q4 | us-gaap |
Unbilled Receivables Current
UnbilledReceivablesCurrent
|
31200000 | USD |
| CY2013 | us-gaap |
Unrealized Gain Loss On Derivatives
UnrealizedGainLossOnDerivatives
|
-38500000 | USD |
| CY2012Q4 | us-gaap |
Unrecognized Tax Benefits
UnrecognizedTaxBenefits
|
267200000 | USD |
| CY2013Q4 | us-gaap |
Unrecognized Tax Benefits
UnrecognizedTaxBenefits
|
175200000 | USD |
| CY2014Q4 | us-gaap |
Unrecognized Tax Benefits
UnrecognizedTaxBenefits
|
182000000 | USD |
| CY2015Q4 | us-gaap |
Unrecognized Tax Benefits
UnrecognizedTaxBenefits
|
187000000 | USD |
| CY2013 | us-gaap |
Unrecognized Tax Benefits Decreases Resulting From Current Period Tax Positions
UnrecognizedTaxBenefitsDecreasesResultingFromCurrentPeriodTaxPositions
|
0 | USD |
| CY2014 | us-gaap |
Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations
UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations
|
9300000 | USD |
| CY2015 | us-gaap |
Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations
UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations
|
0 | USD |
| CY2013Q4 | us-gaap |
Unrecognized Tax Benefits That Would Impact Effective Tax Rate
UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate
|
86900000 | USD |
| CY2014 | us-gaap |
Unrecognized Tax Benefits Decreases Resulting From Current Period Tax Positions
UnrecognizedTaxBenefitsDecreasesResultingFromCurrentPeriodTaxPositions
|
0 | USD |
| CY2015 | us-gaap |
Unrecognized Tax Benefits Decreases Resulting From Current Period Tax Positions
UnrecognizedTaxBenefitsDecreasesResultingFromCurrentPeriodTaxPositions
|
0 | USD |
| CY2014Q4 | us-gaap |
Unrecognized Tax Benefits That Would Impact Effective Tax Rate
UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate
|
97200000 | USD |
| CY2015Q4 | us-gaap |
Unrecognized Tax Benefits That Would Impact Effective Tax Rate
UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate
|
100200000 | USD |
| CY2014Q4 | us-gaap |
Unsecured Debt
UnsecuredDebt
|
12562100000 | USD |
| CY2013 | us-gaap |
Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions
UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions
|
93600000 | USD |
| CY2015Q4 | us-gaap |
Unsecured Debt
UnsecuredDebt
|
13629100000 | USD |
| CY2014 | us-gaap |
Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions
UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions
|
1500000 | USD |
| CY2015 | us-gaap |
Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions
UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions
|
400000 | USD |
| CY2013 | us-gaap |
Utilities Operating Expense Depreciation And Amortization
UtilitiesOperatingExpenseDepreciationAndAmortization
|
1712500000 | USD |
| CY2014 | us-gaap |
Utilities Operating Expense Depreciation And Amortization
UtilitiesOperatingExpenseDepreciationAndAmortization
|
1897600000 | USD |
| CY2015 | us-gaap |
Utilities Operating Expense Depreciation And Amortization
UtilitiesOperatingExpenseDepreciationAndAmortization
|
2009700000 | USD |
| CY2013 | us-gaap |
Utilities Operating Expense Maintenance
UtilitiesOperatingExpenseMaintenance
|
1163200000 | USD |
| CY2014 | us-gaap |
Utilities Operating Expense Maintenance
UtilitiesOperatingExpenseMaintenance
|
1328000000 | USD |
| CY2013 | us-gaap |
Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities
UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities
|
0 | USD |
| CY2014 | us-gaap |
Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities
UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities
|
600000 | USD |
| CY2013 | us-gaap |
Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions
UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions
|
0 | USD |
| CY2015 | us-gaap |
Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities
UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities
|
0 | USD |
| CY2013 | us-gaap |
Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions
UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions
|
1800000 | USD |
| CY2014 | us-gaap |
Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions
UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions
|
0 | USD |
| CY2015 | us-gaap |
Utilities Operating Expense Maintenance
UtilitiesOperatingExpenseMaintenance
|
1325300000 | USD |
| CY2013 | us-gaap |
Utilities Operating Expense Operations
UtilitiesOperatingExpenseOperations
|
2448400000 | USD |
| CY2014 | us-gaap |
Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions
UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions
|
18200000 | USD |
| CY2015 | us-gaap |
Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions
UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions
|
5400000 | USD |
| CY2014 | us-gaap |
Unrecognized Tax Benefits Increases Resulting From Settlements With Taxing Authorities
UnrecognizedTaxBenefitsIncreasesResultingFromSettlementsWithTaxingAuthorities
|
0 | USD |
| CY2015 | us-gaap |
Unrecognized Tax Benefits Increases Resulting From Settlements With Taxing Authorities
UnrecognizedTaxBenefitsIncreasesResultingFromSettlementsWithTaxingAuthorities
|
0 | USD |
| CY2013 | us-gaap |
Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations
UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations
|
200000 | USD |
| CY2014 | us-gaap |
Utilities Operating Expense Operations
UtilitiesOperatingExpenseOperations
|
2766600000 | USD |
| CY2015 | us-gaap |
Utilities Operating Expense Operations
UtilitiesOperatingExpenseOperations
|
2703900000 | USD |
| CY2013 | us-gaap |
Weighted Average Number Of Diluted Shares Outstanding
WeightedAverageNumberOfDilutedSharesOutstanding
|
487040956 | shares |
| CY2014 | us-gaap |
Weighted Average Number Of Diluted Shares Outstanding
WeightedAverageNumberOfDilutedSharesOutstanding
|
488899840 | shares |
| CY2015 | us-gaap |
Weighted Average Number Of Diluted Shares Outstanding
WeightedAverageNumberOfDilutedSharesOutstanding
|
490574568 | shares |
| CY2013 | us-gaap |
Weighted Average Number Of Shares Outstanding Basic
WeightedAverageNumberOfSharesOutstandingBasic
|
486619555 | shares |
| CY2014 | us-gaap |
Weighted Average Number Of Shares Outstanding Basic
WeightedAverageNumberOfSharesOutstandingBasic
|
488592997 | shares |
| CY2015 | us-gaap |
Weighted Average Number Of Shares Outstanding Basic
WeightedAverageNumberOfSharesOutstandingBasic
|
490340522 | shares |
| CY2015 | aep |
Lease Rental Costs Textblock
LeaseRentalCostsTextblock
|
<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;text-align:center;font-size:10pt;"><div style="padding-left:0px;text-indent:0px;line-height:normal;padding-top:10px;"><table cellpadding="0" cellspacing="0" style="font-family:Times New Roman;font-size:10pt;margin-left:auto;margin-right:auto;width:99.61013645224172%;border-collapse:collapse;text-align:left;"><tr><td colspan="25" rowspan="1"></td></tr><tr><td width="31%" rowspan="1" colspan="1"></td><td width="1%" rowspan="1" colspan="1"></td><td width="1%" rowspan="1" colspan="1"></td><td width="8%" rowspan="1" colspan="1"></td><td width="1%" rowspan="1" colspan="1"></td><td width="4%" rowspan="1" colspan="1"></td><td width="1%" rowspan="1" colspan="1"></td><td width="8%" rowspan="1" colspan="1"></td><td width="1%" rowspan="1" colspan="1"></td><td width="1%" rowspan="1" colspan="1"></td><td width="1%" rowspan="1" colspan="1"></td><td width="8%" rowspan="1" colspan="1"></td><td width="1%" rowspan="1" colspan="1"></td><td width="1%" rowspan="1" colspan="1"></td><td width="1%" rowspan="1" colspan="1"></td><td width="8%" rowspan="1" colspan="1"></td><td width="1%" rowspan="1" colspan="1"></td><td width="1%" rowspan="1" colspan="1"></td><td width="1%" rowspan="1" colspan="1"></td><td width="8%" rowspan="1" colspan="1"></td><td width="1%" rowspan="1" colspan="1"></td><td width="1%" rowspan="1" colspan="1"></td><td width="1%" rowspan="1" colspan="1"></td><td width="8%" rowspan="1" colspan="1"></td><td width="1%" rowspan="1" colspan="1"></td></tr><tr><td style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">Year Ended December 31, 2015</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="3" style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1"><div style="text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">AEP</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="3" style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1"><div style="text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">APCo</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="3" style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1"><div style="text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">I&M</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="3" style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1"><div style="text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">OPCo</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="3" style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1"><div style="text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">PSO</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="3" style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1"><div style="text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">SWEPCo</font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="23" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">(in millions)</font></div></td></tr><tr><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="text-align:left;padding-left:24px;text-indent:-24px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Net Lease Expense on Operating Leases</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">$</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">292.6</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">$</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">16.4</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">$</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">88.3</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">$</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">7.6</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">$</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">5.4</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">$</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">6.7</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Amortization of Capital Leases</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="2" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">108.5</font></div></td><td style="vertical-align:bottom;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="2" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">5.6</font></div></td><td style="vertical-align:bottom;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="2" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">40.7</font></div></td><td style="vertical-align:bottom;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="2" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">3.9</font></div></td><td style="vertical-align:bottom;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="2" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">3.5</font></div></td><td style="vertical-align:bottom;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="2" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">13.7</font></div></td><td style="vertical-align:bottom;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td></tr><tr><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Interest on Capital Leases</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="2" style="vertical-align:bottom;border-bottom:1px solid #000000;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">25.1</font></div></td><td style="vertical-align:bottom;border-bottom:1px solid #000000;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="2" style="vertical-align:bottom;border-bottom:1px solid #000000;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">0.8</font></div></td><td style="vertical-align:bottom;border-bottom:1px solid #000000;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="2" style="vertical-align:bottom;border-bottom:1px solid #000000;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">3.3</font></div></td><td style="vertical-align:bottom;border-bottom:1px solid #000000;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="2" style="vertical-align:bottom;border-bottom:1px solid #000000;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">0.6</font></div></td><td style="vertical-align:bottom;border-bottom:1px solid #000000;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="2" style="vertical-align:bottom;border-bottom:1px solid #000000;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">0.7</font></div></td><td style="vertical-align:bottom;border-bottom:1px solid #000000;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="2" style="vertical-align:bottom;border-bottom:1px solid #000000;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">6.2</font></div></td><td style="vertical-align:bottom;border-bottom:1px solid #000000;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">Total Lease Rental Costs</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;border-top:1px solid #000000;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">$</font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;padding-top:2px;padding-bottom:2px;border-top:1px solid #000000;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">426.2</font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;border-top:1px solid #000000;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">(a)</font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">$</font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">22.8</font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">$</font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">132.3</font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">$</font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">12.1</font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">$</font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">9.6</font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">$</font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">26.6</font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td></tr></table></div><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div><div style="line-height:120%;text-align:center;font-size:10pt;"><div style="padding-left:0px;text-indent:0px;line-height:normal;padding-top:10px;"><table cellpadding="0" cellspacing="0" style="font-family:Times New Roman;font-size:10pt;margin-left:auto;margin-right:auto;width:99.61013645224172%;border-collapse:collapse;text-align:left;"><tr><td colspan="25" rowspan="1"></td></tr><tr><td width="31%" rowspan="1" colspan="1"></td><td width="1%" rowspan="1" colspan="1"></td><td width="1%" rowspan="1" colspan="1"></td><td width="8%" rowspan="1" colspan="1"></td><td width="1%" rowspan="1" colspan="1"></td><td width="4%" rowspan="1" colspan="1"></td><td width="1%" rowspan="1" colspan="1"></td><td width="8%" rowspan="1" colspan="1"></td><td width="1%" rowspan="1" colspan="1"></td><td width="1%" rowspan="1" colspan="1"></td><td width="1%" rowspan="1" colspan="1"></td><td width="8%" rowspan="1" colspan="1"></td><td width="1%" rowspan="1" colspan="1"></td><td width="1%" rowspan="1" colspan="1"></td><td width="1%" rowspan="1" colspan="1"></td><td width="8%" rowspan="1" colspan="1"></td><td width="1%" rowspan="1" colspan="1"></td><td width="1%" rowspan="1" colspan="1"></td><td width="1%" rowspan="1" colspan="1"></td><td width="8%" rowspan="1" colspan="1"></td><td width="1%" rowspan="1" colspan="1"></td><td width="1%" rowspan="1" colspan="1"></td><td width="1%" rowspan="1" colspan="1"></td><td width="8%" rowspan="1" colspan="1"></td><td width="1%" rowspan="1" colspan="1"></td></tr><tr><td style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">Year Ended December 31, 2014</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="3" style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1"><div style="text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">AEP</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="3" style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1"><div style="text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">APCo</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="3" style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1"><div style="text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">I&M</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="3" style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1"><div style="text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">OPCo</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="3" style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1"><div style="text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">PSO</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="3" style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1"><div style="text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">SWEPCo</font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="23" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">(in millions)</font></div></td></tr><tr><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="text-align:left;padding-left:24px;text-indent:-24px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Net Lease Expense on Operating Leases</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">$</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">303.9</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">$</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">18.3</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">$</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">93.4</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">$</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">6.6</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">$</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">3.2</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">$</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">5.5</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Amortization of Capital Leases</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="2" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">109.4</font></div></td><td style="vertical-align:bottom;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="2" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">5.5</font></div></td><td style="vertical-align:bottom;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="2" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">44.4</font></div></td><td style="vertical-align:bottom;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="2" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">5.7</font></div></td><td style="vertical-align:bottom;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="2" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">4.2</font></div></td><td style="vertical-align:bottom;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="2" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">14.9</font></div></td><td style="vertical-align:bottom;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td></tr><tr><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Interest on Capital Leases</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="2" style="vertical-align:bottom;border-bottom:1px solid #000000;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">26.1</font></div></td><td style="vertical-align:bottom;border-bottom:1px solid #000000;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="2" style="vertical-align:bottom;border-bottom:1px solid #000000;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">1.0</font></div></td><td style="vertical-align:bottom;border-bottom:1px solid #000000;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="2" style="vertical-align:bottom;border-bottom:1px solid #000000;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">2.8</font></div></td><td style="vertical-align:bottom;border-bottom:1px solid #000000;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="2" style="vertical-align:bottom;border-bottom:1px solid #000000;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">1.2</font></div></td><td style="vertical-align:bottom;border-bottom:1px solid #000000;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="2" style="vertical-align:bottom;border-bottom:1px solid #000000;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">0.7</font></div></td><td style="vertical-align:bottom;border-bottom:1px solid #000000;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="2" style="vertical-align:bottom;border-bottom:1px solid #000000;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">7.4</font></div></td><td style="vertical-align:bottom;border-bottom:1px solid #000000;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">Total Lease Rental Costs</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;border-top:1px solid #000000;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">$</font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;padding-top:2px;padding-bottom:2px;border-top:1px solid #000000;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">439.4</font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;border-top:1px solid #000000;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">(a)</font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">$</font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">24.8</font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">$</font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">140.6</font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">$</font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">13.5</font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">$</font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">8.1</font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">$</font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">27.8</font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td></tr></table></div><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div><div style="line-height:120%;text-align:center;font-size:10pt;"><div style="padding-left:0px;text-indent:0px;line-height:normal;padding-top:10px;"><table cellpadding="0" cellspacing="0" style="font-family:Times New Roman;font-size:10pt;margin-left:auto;margin-right:auto;width:99.61013645224172%;border-collapse:collapse;text-align:left;"><tr><td colspan="25" rowspan="1"></td></tr><tr><td width="31%" rowspan="1" colspan="1"></td><td width="1%" rowspan="1" colspan="1"></td><td width="1%" rowspan="1" colspan="1"></td><td width="8%" rowspan="1" colspan="1"></td><td width="1%" rowspan="1" colspan="1"></td><td width="4%" rowspan="1" colspan="1"></td><td width="1%" rowspan="1" colspan="1"></td><td width="8%" rowspan="1" colspan="1"></td><td width="1%" rowspan="1" colspan="1"></td><td width="1%" rowspan="1" colspan="1"></td><td width="1%" rowspan="1" colspan="1"></td><td width="8%" rowspan="1" colspan="1"></td><td width="1%" rowspan="1" colspan="1"></td><td width="1%" rowspan="1" colspan="1"></td><td width="1%" rowspan="1" colspan="1"></td><td width="8%" rowspan="1" colspan="1"></td><td width="1%" rowspan="1" colspan="1"></td><td width="1%" rowspan="1" colspan="1"></td><td width="1%" rowspan="1" colspan="1"></td><td width="8%" rowspan="1" colspan="1"></td><td width="1%" rowspan="1" colspan="1"></td><td width="1%" rowspan="1" colspan="1"></td><td width="1%" rowspan="1" colspan="1"></td><td width="8%" rowspan="1" colspan="1"></td><td width="1%" rowspan="1" colspan="1"></td></tr><tr><td style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">Year Ended December 31, 2013</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="3" style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1"><div style="text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">AEP</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="3" style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1"><div style="text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">APCo</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="3" style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1"><div style="text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">I&M</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="3" style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1"><div style="text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">OPCo</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="3" style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1"><div style="text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">PSO</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="3" style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1"><div style="text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">SWEPCo</font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="23" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">(in millions)</font></div></td></tr><tr><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="text-align:left;padding-left:24px;text-indent:-24px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Net Lease Expense on Operating Leases</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">$</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">326.6</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">$</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">17.5</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">$</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">95.6</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">$</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">57.8</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">$</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">4.1</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">$</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">6.3</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Amortization of Capital Leases</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="2" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">73.9</font></div></td><td style="vertical-align:bottom;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="2" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">6.3</font></div></td><td style="vertical-align:bottom;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="2" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">11.3</font></div></td><td style="vertical-align:bottom;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="2" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">7.8</font></div></td><td style="vertical-align:bottom;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="2" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">4.1</font></div></td><td style="vertical-align:bottom;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="2" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">15.5</font></div></td><td style="vertical-align:bottom;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td></tr><tr><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Interest on Capital Leases</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="2" style="vertical-align:bottom;border-bottom:1px solid #000000;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">28.3</font></div></td><td style="vertical-align:bottom;border-bottom:1px solid #000000;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="2" style="vertical-align:bottom;border-bottom:1px solid #000000;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">1.4</font></div></td><td style="vertical-align:bottom;border-bottom:1px solid #000000;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="2" style="vertical-align:bottom;border-bottom:1px solid #000000;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">1.9</font></div></td><td style="vertical-align:bottom;border-bottom:1px solid #000000;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="2" style="vertical-align:bottom;border-bottom:1px solid #000000;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">4.1</font></div></td><td style="vertical-align:bottom;border-bottom:1px solid #000000;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="2" style="vertical-align:bottom;border-bottom:1px solid #000000;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">0.8</font></div></td><td style="vertical-align:bottom;border-bottom:1px solid #000000;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="2" style="vertical-align:bottom;border-bottom:1px solid #000000;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">8.1</font></div></td><td style="vertical-align:bottom;border-bottom:1px solid #000000;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">Total Lease Rental Costs</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;border-top:1px solid #000000;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">$</font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;padding-top:2px;padding-bottom:2px;border-top:1px solid #000000;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">428.8</font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;border-top:1px solid #000000;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">(a)</font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">$</font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">25.2</font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">$</font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">108.8</font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">$</font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">69.7</font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">$</font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">9.0</font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">$</font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">29.9</font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td></tr></table></div><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div><div style="line-height:120%;text-align:justify;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;"><br clear="none"/></font></div><table cellpadding="0" cellspacing="0" style="font-family:Times New Roman; font-size:10pt;"><tr><td style="width:36px;" rowspan="1" colspan="1"></td><td rowspan="1" colspan="1"></td></tr><tr><td style="vertical-align:top" rowspan="1" colspan="1"><div style="line-height:120%;font-size:10pt;padding-left:6px;"><font style="font-family:inherit;font-size:10pt;">(a)</font></div></td><td style="vertical-align:top;" rowspan="1" colspan="1"><div style="line-height:120%;text-align:justify;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Amounts include lease expenses related to AEPRO that have been classified as Other Operation Expense from Discontinued Operations on the statements of income in the amounts of </font><font style="font-family:inherit;font-size:10pt;">$89 million</font><font style="font-family:inherit;font-size:10pt;">, </font><font style="font-family:inherit;font-size:10pt;">$96 million</font><font style="font-family:inherit;font-size:10pt;"> and </font><font style="font-family:inherit;font-size:10pt;">$103 million</font><font style="font-family:inherit;font-size:10pt;"> for the Years Ended December 31, 2015, 2014 and 2013, respectively. See “AEPRO (Corporate and Other)” section of Note </font><font style="font-family:inherit;font-size:10pt;">7</font><font style="font-family:inherit;font-size:10pt;"> for additional information.</font></div></td></tr></table><div style="line-height:120%;text-align:justify;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;"><br clear="none"/></font></div></div> | |
| CY2015 | us-gaap |
Basis Of Accounting
BasisOfAccounting
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<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;text-align:justify;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;font-weight:bold;">ORGANIZATION</font></div><div style="line-height:120%;text-align:justify;font-size:9pt;"><font style="font-family:inherit;font-size:9pt;"><br clear="none"/></font></div><div style="line-height:120%;text-align:justify;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">The Registrants engage in the generation, transmission and distribution of electric power.  The Registrant Subsidiaries that conduct most of these activities are regulated by the FERC under the Federal Power Act and the Energy Policy Act of 2005 and maintain accounts in accordance with the FERC and other regulatory guidelines.  Most of these companies are subject to further regulation with regard to rates and other matters by state regulatory commissions.</font></div><div style="line-height:120%;text-align:justify;font-size:9pt;"><font style="font-family:inherit;font-size:9pt;"><br clear="none"/></font></div><div style="line-height:120%;text-align:justify;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">AEP provides competitive electric and gas supply for residential, commercial and industrial customers in Ohio, Illinois and other deregulated electricity markets and also provides energy management solutions throughout the United States, including energy efficiency services through its independent retail electric supplier.</font></div><div style="line-height:120%;text-align:justify;font-size:9pt;"><font style="font-family:inherit;font-size:9pt;"><br clear="none"/></font></div><div style="line-height:120%;text-align:justify;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">The Registrants also engage in wholesale electricity, natural gas and other commodity marketing and risk management activities in the United States and provide various energy-related services.  In addition, operations include barging operations and nonregulated wind farms. I&M provides barging services to both affiliated and nonaffiliated companies.  SWEPCo, through consolidated and nonconsolidated affiliates, conducts lignite mining operations to fuel certain of its generation facilities. </font></div></div> | |
| CY2015 | us-gaap |
Use Of Estimates
UseOfEstimates
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<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;text-align:justify;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;font-style:italic;font-weight:bold;">Use of Estimates</font></div><div style="line-height:120%;text-align:justify;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;"><br clear="none"/></font></div><div style="line-height:120%;text-align:justify;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">The preparation of these financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes.  These estimates include, but are not limited to, inventory valuation, allowance for doubtful accounts, goodwill, intangible and long-lived asset impairment, unbilled electricity revenue, valuation of long-term energy contracts, the effects of regulation, long-lived asset recovery, storm costs, the effects of contingencies and certain assumptions made in accounting for pension and postretirement benefits.  The estimates and assumptions used are based upon management’s evaluation of the relevant facts and circumstances as of the date of the financial statements.  Actual results could ultimately differ from those estimates.</font></div><div style="line-height:120%;text-align:justify;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;"><br clear="none"/></font></div></div> |
