$ED
CONSOLIDATED EDISON INC Stock $ed

$ed Overview Financials Valuation SEC Filings Company Website

2015 Form 10-K Financial Statement

#000104786216000225 Filed on February 18, 2016

Income Statement

Concept	2015	2014 Q4	2014
Revenue	$12.55B	$2.828B	$12.92B
YoY Change	-2.83%	-1.36%	4.57%
Cost Of Revenue	$3.468B	$980.0M	$4.228B
YoY Change	-17.98%	12.64%	13.23%
Gross Profit	$9.086B	$1.848B	$8.691B
YoY Change	4.54%	-7.46%	0.82%
Gross Profit Margin	72.38%	65.35%	67.27%
Selling, General & Admin
YoY Change
% of Gross Profit
Research & Development	$23.00M		$22.00M
YoY Change	4.55%		22.22%
% of Gross Profit	0.25%		0.25%
Depreciation & Amortization	$1.130B	$275.0M	$1.071B
YoY Change	5.51%	5.77%	4.59%
% of Gross Profit	12.44%	14.88%	12.32%
Operating Expenses	$10.13B	$1.598B	$10.76B
YoY Change	-5.84%	5.13%	6.38%
Operating Profit	$2.427B	$250.0M	$2.209B
YoY Change	9.87%	-47.59%	-1.56%
Interest Expense	-$594.0M	-$147.0M	-$532.0M
YoY Change	11.65%	5.76%	-173.99%
% of Operating Profit	-24.47%	-58.8%	-24.08%
Other Income/Expense, Net	$24.00M	-$10.00M	$42.00M
YoY Change	-42.86%	900.0%	223.08%
Pretax Income	$1.798B	$93.00M	$1.660B
YoY Change	8.31%	-72.4%	7.93%
Income Tax	$605.0M	$9.000M	$568.0M
% Of Pretax Income	33.65%	9.68%	34.22%
Net Earnings	$1.193B	$84.00M	$1.092B
YoY Change	9.25%	-64.1%	2.82%
Net Earnings / Revenue	9.5%	2.97%	8.45%
Basic Earnings Per Share	$4.07		$3.73
Diluted Earnings Per Share	$4.05	$285.7K	$3.71
COMMON SHARES
Basic Shares Outstanding	293.0M shares	292.9M shares	292.9M shares
Diluted Shares Outstanding	294.4M shares		294.0M shares

Balance Sheet

Concept	2015	2014 Q4	2014
SHORT-TERM ASSETS
Cash & Short-Term Investments	$947.0M	$707.0M	$707.0M
YoY Change	33.95%	-29.37%	-29.37%
Cash & Equivalents	$944.0M	$699.0M	$699.0M
Short-Term Investments	$3.000M	$8.000M	$8.000M
Other Short-Term Assets	$1.017B	$278.0M	$1.079B
YoY Change	-5.75%	18.3%	4.15%
Inventory	$350.0M	$372.0M	$372.0M
Prepaid Expenses		$163.0M
Receivables	$1.052B	$1.201B	$1.201B
Other Receivables	$470.0M	$357.0M	$357.0M
Total Short-Term Assets	$3.836B	$3.716B	$3.716B
YoY Change	3.23%	-4.5%	-4.5%
LONG-TERM ASSETS
Property, Plant & Equipment	$32.21B	$29.83B	$29.83B
YoY Change	7.99%	4.89%	4.89%
Goodwill		$429.0M
YoY Change		0.0%
Intangibles		$3.000M
YoY Change		-25.0%
Long-Term Investments	$884.0M	$816.0M	$816.0M
YoY Change	8.33%	77.01%	77.01%
Other Assets	$8.282B	$9.712B	$9.280B
YoY Change	-10.75%	23.58%	24.97%
Total Long-Term Assets	$41.81B	$40.36B	$40.36B
YoY Change	3.6%	10.38%	9.79%
TOTAL ASSETS
Total Short-Term Assets	$3.836B	$3.716B	$3.716B
Total Long-Term Assets	$41.81B	$40.36B	$40.36B
Total Assets	$45.64B	$44.07B	$44.07B
YoY Change	3.56%	8.95%	8.42%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$1.008B	$1.035B	$1.035B
YoY Change	-2.61%	1.77%	1.77%
Accrued Expenses	$233.0M	$227.0M	$227.0M
YoY Change	2.64%	-33.43%	-33.43%
Deferred Revenue
YoY Change
Short-Term Debt	$1.529B	$800.0M	$800.0M
YoY Change	91.13%	-44.87%	-44.87%
Long-Term Debt Due	$739.0M	$560.0M	$560.0M
YoY Change	31.96%	15.46%	15.46%
Total Short-Term Liabilities	$4.720B	$3.757B	$3.757B
YoY Change	25.63%	-20.57%	-20.57%
LONG-TERM LIABILITIES
Long-Term Debt	$12.01B	$11.55B	$11.55B
YoY Change	3.98%	10.08%	10.07%
Other Long-Term Liabilities	$6.318B	$7.235B	$7.235B
YoY Change	-12.67%	53.41%	53.41%
Total Long-Term Liabilities	$18.32B	$16.18B	$18.78B
YoY Change	-2.43%	22.76%	23.51%
TOTAL LIABILITIES
Total Short-Term Liabilities	$4.720B	$3.757B	$3.757B
Total Long-Term Liabilities	$18.32B	$16.18B	$18.78B
Total Liabilities	$32.59B	$19.94B	$31.50B
YoY Change	3.48%	11.32%	10.89%
SHAREHOLDERS EQUITY
Retained Earnings
YoY Change
Common Stock
YoY Change
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$13.05B	$12.58B	$12.58B
YoY Change
Total Liabilities & Shareholders Equity	$45.64B	$44.07B	$44.07B
YoY Change	3.56%	8.42%	8.42%

Cashflow Statement

Concept	2015	2014 Q4	2014
OPERATING ACTIVITIES
Net Income	$1.193B	$84.00M	$1.092B
YoY Change	9.25%	-64.1%	2.82%
Depreciation, Depletion And Amortization	$1.130B	$275.0M	$1.071B
YoY Change	5.51%	5.77%	4.59%
Cash From Operating Activities	$3.277B	$1.080B	$2.831B
YoY Change	15.75%	-17.81%	10.93%
INVESTING ACTIVITIES
Capital Expenditures	$492.0M	-$887.0M	$180.0M
YoY Change	173.33%	2.78%	-9.55%
Acquisitions
YoY Change
Other Investing Activities	$72.00M	$124.0M	-$10.00M
YoY Change	-820.0%	25.25%
Cash From Investing Activities	-$3.657B	-$763.0M	-$2.759B
YoY Change	32.55%	-0.13%	3.76%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net	-$1.000M		$10.00M
YoY Change	-110.0%		25.0%
Debt Paid & Issued, Net	$500.0M		$480.0M
YoY Change	4.17%		-32.3%
Cash From Financing Activities	$629.0M	177.0M	-$47.00M
YoY Change	-1438.3%	254.0%	-112.14%
NET CHANGE
Cash From Operating Activities	$3.277B	1.080B	$2.831B
Cash From Investing Activities	-$3.657B	-763.0M	-$2.759B
Cash From Financing Activities	$629.0M	177.0M	-$47.00M
Net Change In Cash	$249.0M	494.0M	$25.00M
YoY Change	896.0%	-17.67%	-91.07%
FREE CASH FLOW
Cash From Operating Activities	$3.277B	$1.080B	$2.831B
Capital Expenditures	$492.0M	-$887.0M	$180.0M
Free Cash Flow	$2.785B	$1.967B	$2.651B
YoY Change	5.05%	-9.65%	12.66%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
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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
CY2015	dei	Entity Central Index Key EntityCentralIndexKey	0001047862
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CY2015	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
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CY2015	dei	Entity Registrant Name EntityRegistrantName	CONSOLIDATED EDISON INC
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CY2015Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	1008000000	USD
CY2014Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	1201000000	USD
CY2015Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	1052000000	USD
CY2014Q4	us-gaap	Accrued Environmental Loss Contingencies Noncurrent AccruedEnvironmentalLossContingenciesNoncurrent	764000000	USD
CY2015Q4	us-gaap	Accrued Environmental Loss Contingencies Noncurrent AccruedEnvironmentalLossContingenciesNoncurrent	765000000	USD
CY2014Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	91000000	USD
CY2015Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	95000000	USD
CY2014Q4	us-gaap	Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Net Of Tax AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax	42000000	USD
CY2015Q4	us-gaap	Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Net Of Tax AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax	31000000	USD
CY2013Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-25000000	USD
CY2014Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-45000000	USD
CY2015Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-34000000	USD
CY2013	us-gaap	Adjustment For Amortization AdjustmentForAmortization	21000000	USD
CY2014	us-gaap	Adjustment For Amortization AdjustmentForAmortization	121000000	USD
CY2015	us-gaap	Adjustment For Amortization AdjustmentForAmortization	-52000000	USD
CY2014Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	96000000	USD
CY2015Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	85000000	USD
CY2014Q4	us-gaap	Allowance For Doubtful Other Receivables Current AllowanceForDoubtfulOtherReceivablesCurrent	10000000	USD
CY2015Q4	us-gaap	Allowance For Doubtful Other Receivables Current AllowanceForDoubtfulOtherReceivablesCurrent	11000000	USD
CY2013	us-gaap	Asset Impairment Charges AssetImpairmentCharges	0	USD
CY2014	us-gaap	Asset Impairment Charges AssetImpairmentCharges	0	USD
CY2015	us-gaap	Asset Retirement Obligation Accretion Expense AssetRetirementObligationAccretionExpense	8000000	USD
CY2015	us-gaap	Asset Retirement Obligation Liabilities Settled AssetRetirementObligationLiabilitiesSettled	36000000	USD
CY2014	us-gaap	Asset Retirement Obligation Period Increase Decrease AssetRetirementObligationPeriodIncreaseDecrease	-16000000	USD
CY2015	us-gaap	Asset Retirement Obligation Period Increase Decrease AssetRetirementObligationPeriodIncreaseDecrease	-23000000	USD
CY2015	us-gaap	Asset Retirement Obligation Revision Of Estimate AssetRetirementObligationRevisionOfEstimate	82000000	USD
CY2014Q4	us-gaap	Asset Retirement Obligations Noncurrent AssetRetirementObligationsNoncurrent	188000000	USD
CY2015Q4	us-gaap	Asset Retirement Obligations Noncurrent AssetRetirementObligationsNoncurrent	242000000	USD
CY2013Q4	us-gaap	Assets Assets	40451000000	USD
CY2014Q4	us-gaap	Assets Assets	44071000000	USD
CY2015Q4	us-gaap	Assets Assets	45642000000	USD
CY2014Q4	us-gaap	Assets Current AssetsCurrent	3716000000	USD
CY2015Q4	us-gaap	Assets Current AssetsCurrent	3836000000	USD
CY2014Q4	us-gaap	Assets Of Disposal Group Including Discontinued Operation Current AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrent	0	USD
CY2015Q4	us-gaap	Assets Of Disposal Group Including Discontinued Operation Current AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrent	157000000	USD
CY2015Q4	us-gaap	Capital Leases Future Minimum Payments Due CapitalLeasesFutureMinimumPaymentsDue	3000000	USD
CY2015Q4	us-gaap	Capital Leases Future Minimum Payments Due Current CapitalLeasesFutureMinimumPaymentsDueCurrent	1000000	USD
CY2015Q4	us-gaap	Capital Leases Future Minimum Payments Due In Five Years CapitalLeasesFutureMinimumPaymentsDueInFiveYears	0	USD
CY2015Q4	us-gaap	Capital Leases Future Minimum Payments Due In Four Years CapitalLeasesFutureMinimumPaymentsDueInFourYears	0	USD
CY2015Q4	us-gaap	Capital Leases Future Minimum Payments Due In Three Years CapitalLeasesFutureMinimumPaymentsDueInThreeYears	1000000	USD
CY2015Q4	us-gaap	Capital Leases Future Minimum Payments Due In Two Years CapitalLeasesFutureMinimumPaymentsDueInTwoYears	1000000	USD
CY2015Q4	us-gaap	Capital Leases Future Minimum Payments Due Thereafter CapitalLeasesFutureMinimumPaymentsDueThereafter	0	USD
CY2015Q4	us-gaap	Capital Leases Future Minimum Payments Interest Included In Payments CapitalLeasesFutureMinimumPaymentsInterestIncludedInPayments	1000000	USD
CY2015Q4	us-gaap	Capital Leases Future Minimum Payments Present Value Of Net Minimum Payments CapitalLeasesFutureMinimumPaymentsPresentValueOfNetMinimumPayments	2000000	USD
CY2014Q4	us-gaap	Capitalization Longterm Debt And Equity CapitalizationLongtermDebtAndEquity	24122000000	USD
CY2015Q4	us-gaap	Capitalization Longterm Debt And Equity CapitalizationLongtermDebtAndEquity	25058000000	USD
CY2013Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	674000000	USD
CY2014Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	699000000	USD
CY2015Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	944000000	USD
CY2012Q4	us-gaap	Cash And Cash Equivalents At Carrying Value Including Discontinued Operations CashAndCashEquivalentsAtCarryingValueIncludingDiscontinuedOperations	394000000	USD
CY2013Q4	us-gaap	Cash And Cash Equivalents At Carrying Value Including Discontinued Operations CashAndCashEquivalentsAtCarryingValueIncludingDiscontinuedOperations	674000000	USD
CY2014Q4	us-gaap	Cash And Cash Equivalents At Carrying Value Including Discontinued Operations CashAndCashEquivalentsAtCarryingValueIncludingDiscontinuedOperations	699000000	USD
CY2015Q4	us-gaap	Cash And Cash Equivalents At Carrying Value Including Discontinued Operations CashAndCashEquivalentsAtCarryingValueIncludingDiscontinuedOperations	948000000	USD
CY2013	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	280000000	USD
CY2014	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	25000000	USD
CY2015	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	249000000	USD
CY2015Q4	us-gaap	Collateral Already Posted Aggregate Fair Value CollateralAlreadyPostedAggregateFairValue	18000000	USD
CY2014Q4	us-gaap	Commercial Paper CommercialPaper	800000000	USD
CY2015Q4	us-gaap	Commercial Paper CommercialPaper	1529000000	USD
CY2013	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	2.46
CY2014	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	2.52
CY2015	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	2.60
CY2014Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	21976200	shares
CY2015Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	21976200	shares
CY2013	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	1090000000	USD
CY2014	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	1072000000	USD
CY2015	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	1204000000	USD
CY2013	us-gaap	Construction And Development Costs ConstructionAndDevelopmentCosts	2648000000	USD
CY2014	us-gaap	Construction And Development Costs ConstructionAndDevelopmentCosts	2721000000	USD
CY2015	us-gaap	Construction And Development Costs ConstructionAndDevelopmentCosts	3418000000	USD
CY2013	us-gaap	Construction In Progress Expenditures Incurred But Not Yet Paid ConstructionInProgressExpendituresIncurredButNotYetPaid	174000000	USD
CY2014	us-gaap	Construction In Progress Expenditures Incurred But Not Yet Paid ConstructionInProgressExpendituresIncurredButNotYetPaid	179000000	USD
CY2015	us-gaap	Construction In Progress Expenditures Incurred But Not Yet Paid ConstructionInProgressExpendituresIncurredButNotYetPaid	279000000	USD
CY2015Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	362000000	USD
CY2014Q4	us-gaap	Construction In Progress Gross ConstructionInProgressGross	113000000	USD
CY2015Q4	us-gaap	Construction In Progress Gross ConstructionInProgressGross	244000000	USD
CY2013	us-gaap	Cost Of Purchased Oil And Gas CostOfPurchasedOilAndGas	635000000	USD
CY2014	us-gaap	Cost Of Purchased Oil And Gas CostOfPurchasedOilAndGas	811000000	USD
CY2015	us-gaap	Cost Of Purchased Oil And Gas CostOfPurchasedOilAndGas	495000000	USD
CY2013	us-gaap	Cost Of Purchased Power CostOfPurchasedPower	3099000000	USD
CY2014	us-gaap	Cost Of Purchased Power CostOfPurchasedPower	3417000000	USD
CY2015	us-gaap	Cost Of Purchased Power CostOfPurchasedPower	2973000000	USD
CY2014Q4	us-gaap	Costs In Excess Of Billings On Uncompleted Contracts Or Programs Expected To Be Collected Within One Year CostsInExcessOfBillingsOnUncompletedContractsOrProgramsExpectedToBeCollectedWithinOneYear	500000000	USD
CY2015Q4	us-gaap	Costs In Excess Of Billings On Uncompleted Contracts Or Programs Expected To Be Collected Within One Year CostsInExcessOfBillingsOnUncompletedContractsOrProgramsExpectedToBeCollectedWithinOneYear	360000000	USD
CY2015Q4	us-gaap	Credit Derivative Maximum Exposure Undiscounted CreditDerivativeMaximumExposureUndiscounted	212000000	USD
CY2015Q4	us-gaap	Credit Risk Derivatives At Fair Value Net CreditRiskDerivativesAtFairValueNet	106000000	USD
CY2013	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	285000000	USD
CY2014	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	-9000000	USD
CY2015	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	-86000000	USD
CY2013	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	151000000	USD
CY2014	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	59000000	USD
CY2015	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	38000000	USD
CY2014Q4	us-gaap	Customer Deposits Current CustomerDepositsCurrent	344000000	USD
CY2015Q4	us-gaap	Customer Deposits Current CustomerDepositsCurrent	354000000	USD
CY2015	us-gaap	Debt Instrument Covenant Description DebtInstrumentCovenantDescription	Con Edison's ratio of consolidated debt to consolidated capital to exceed 0.675 to 1
CY2014Q4	us-gaap	Debt Instrument Unamortized Discount DebtInstrumentUnamortizedDiscount	22000000	USD
CY2015Q4	us-gaap	Debt Instrument Unamortized Discount DebtInstrumentUnamortizedDiscount	22000000	USD
CY2015	us-gaap	Deferred Compensation Arrangement With Individual Shares Issued DeferredCompensationArrangementWithIndividualSharesIssued	30724	shares
CY2013	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	115000000	USD
CY2014	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	463000000	USD
CY2015	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	569000000	USD
CY2014Q4	us-gaap	Deferred Finance Costs Net DeferredFinanceCostsNet	85000000	USD
CY2015Q4	us-gaap	Deferred Finance Costs Net DeferredFinanceCostsNet	91000000	USD
CY2013	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	40000000	USD
CY2014	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	518000000	USD
CY2015	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	653000000	USD
CY2014Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	11408000000	USD
CY2015Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	12225000000	USD
CY2013	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-70000000	USD
CY2014	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	61000000	USD
CY2015	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	93000000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Charitable Contribution Carryforwards DeferredTaxAssetsCharitableContributionCarryforwards	9000000	USD
CY2010Q4	us-gaap	Deferred Tax Assets Charitable Contribution Carryforwards DeferredTaxAssetsCharitableContributionCarryforwards	1000000	USD
CY2014Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	2586000000	USD
CY2015Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	2857000000	USD
CY2014Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	21000000	USD
CY2015Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	29000000	USD
CY2014Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	272000000	USD
CY2014Q4	us-gaap	Deferred Tax Assets Regulatory Assets And Liabilities DeferredTaxAssetsRegulatoryAssetsAndLiabilities	615000000	USD
CY2015Q4	us-gaap	Deferred Tax Assets Regulatory Assets And Liabilities DeferredTaxAssetsRegulatoryAssetsAndLiabilities	836000000	USD
CY2014Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards DeferredTaxAssetsTaxCreditCarryforwards	0	USD
CY2015Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards DeferredTaxAssetsTaxCreditCarryforwards	258000000	USD
CY2015Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards General Business DeferredTaxAssetsTaxCreditCarryforwardsGeneralBusiness	258000000	USD
CY2014Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	11000000	USD
CY2015Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	15000000	USD
CY2014Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	8948000000	USD
CY2015Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	9537000000	USD
CY2014Q4	us-gaap	Deferred Tax Liabilities Investment In Noncontrolled Affiliates DeferredTaxLiabilitiesInvestmentInNoncontrolledAffiliates	126000000	USD
CY2015Q4	us-gaap	Deferred Tax Liabilities Investment In Noncontrolled Affiliates DeferredTaxLiabilitiesInvestmentInNoncontrolledAffiliates	169000000	USD
CY2014Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	7510000000	USD
CY2015Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	8614000000	USD
CY2014Q4	us-gaap	Deferred Tax Liabilities Regulatory Assets And Liabilities DeferredTaxLiabilitiesRegulatoryAssetsAndLiabilities	910000000	USD
CY2015Q4	us-gaap	Deferred Tax Liabilities Regulatory Assets And Liabilities DeferredTaxLiabilitiesRegulatoryAssetsAndLiabilities	947000000	USD
CY2015Q4	us-gaap	Defined Benefit Pension Plan Current And Noncurrent Liabilities DefinedBenefitPensionPlanCurrentAndNoncurrentLiabilities	968000000	USD
CY2014Q4	us-gaap	Deposits Assets Current DepositsAssetsCurrent	8000000	USD
CY2015Q4	us-gaap	Deposits Assets Current DepositsAssetsCurrent	3000000	USD
CY2013	us-gaap	Depreciation And Amortization DepreciationAndAmortization	1024000000	USD
CY2014	us-gaap	Depreciation And Amortization DepreciationAndAmortization	1071000000	USD
CY2015	us-gaap	Depreciation And Amortization DepreciationAndAmortization	1130000000	USD
CY2014Q4	us-gaap	Derivative Fair Value Of Derivative Net DerivativeFairValueOfDerivativeNet	-23000000	USD
CY2015Q4	us-gaap	Derivative Fair Value Of Derivative Net DerivativeFairValueOfDerivativeNet	-161000000	USD
CY2014	us-gaap	Derivative Gain Loss On Derivative Net DerivativeGainLossOnDerivativeNet	-123000000	USD
CY2015	us-gaap	Derivative Gain Loss On Derivative Net DerivativeGainLossOnDerivativeNet	-186000000	USD
CY2014Q4	us-gaap	Derivative Liabilities Current DerivativeLiabilitiesCurrent	64000000	USD
CY2015Q4	us-gaap	Derivative Liabilities Current DerivativeLiabilitiesCurrent	66000000	USD
CY2014Q4	us-gaap	Derivative Liabilities Noncurrent DerivativeLiabilitiesNoncurrent	13000000	USD
CY2015Q4	us-gaap	Derivative Liabilities Noncurrent DerivativeLiabilitiesNoncurrent	39000000	USD
CY2013Q4	us-gaap	Disposal Group Including Discontinued Operation Cash And Cash Equivalents DisposalGroupIncludingDiscontinuedOperationCashAndCashEquivalents	0	USD
CY2014Q4	us-gaap	Disposal Group Including Discontinued Operation Cash And Cash Equivalents DisposalGroupIncludingDiscontinuedOperationCashAndCashEquivalents	0	USD
CY2015Q4	us-gaap	Disposal Group Including Discontinued Operation Cash And Cash Equivalents DisposalGroupIncludingDiscontinuedOperationCashAndCashEquivalents	4000000	USD
CY2013	us-gaap	Dividends Common Stock DividendsCommonStock	721000000	USD
CY2014	us-gaap	Dividends Common Stock DividendsCommonStock	739000000	USD
CY2015	us-gaap	Dividends Common Stock DividendsCommonStock	761000000	USD
CY2013Q4	us-gaap	Dividends Payable Current And Noncurrent DividendsPayableCurrentAndNoncurrent	10000000	USD
CY2014Q4	us-gaap	Dividends Payable Current And Noncurrent DividendsPayableCurrentAndNoncurrent	11000000	USD
CY2015Q4	us-gaap	Dividends Payable Current And Noncurrent DividendsPayableCurrentAndNoncurrent	28000000	USD
CY2013	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	3.62
CY2014	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	3.73
CY2015	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	4.07
CY2013	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	3.61
CY2014	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	3.71
CY2015	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	4.05
CY2013	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.31
CY2014	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.34
CY2015	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.34
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
CY2015	us-gaap	Effective Income Tax Rate Reconciliation Change In Enacted Tax Rate EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate	0.071
CY2013Q4	us-gaap	Effective Income Tax Rate Reconciliation Deductions EffectiveIncomeTaxRateReconciliationDeductions	0.50
CY2015	us-gaap	Effective Income Tax Rate Reconciliation Deductions EffectiveIncomeTaxRateReconciliationDeductions	0.50
CY2013	us-gaap	Effective Income Tax Rate Reconciliation Deductions Qualified Production Activities EffectiveIncomeTaxRateReconciliationDeductionsQualifiedProductionActivities	0.01
CY2014	us-gaap	Effective Income Tax Rate Reconciliation Deductions Qualified Production Activities EffectiveIncomeTaxRateReconciliationDeductionsQualifiedProductionActivities	0.00
CY2015	us-gaap	Effective Income Tax Rate Reconciliation Deductions Qualified Production Activities EffectiveIncomeTaxRateReconciliationDeductionsQualifiedProductionActivities	0.00
CY2013	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.02
CY2014	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.01
CY2015	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.01
CY2013	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.04
CY2014	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.05
CY2015	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.05
CY2013	us-gaap	Electric Utility Revenue ElectricUtilityRevenue	8756000000	USD
CY2014	us-gaap	Electric Utility Revenue ElectricUtilityRevenue	9114000000	USD
CY2015	us-gaap	Electric Utility Revenue ElectricUtilityRevenue	8832000000	USD
CY2014Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	95000000	USD
CY2015Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	97000000	USD
CY2014	us-gaap	Employee Service Share Based Compensation Cash Received From Exercise Of Stock Options EmployeeServiceShareBasedCompensationCashReceivedFromExerciseOfStockOptions	11000000	USD
CY2015	us-gaap	Employee Service Share Based Compensation Cash Received From Exercise Of Stock Options EmployeeServiceShareBasedCompensationCashReceivedFromExerciseOfStockOptions	6000000	USD
CY2013	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	11000000	USD
CY2014	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	12000000	USD
CY2015	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	14000000	USD
CY2014	us-gaap	Environmental Remediation Expense EnvironmentalRemediationExpense	29000000	USD
CY2015	us-gaap	Environmental Remediation Expense EnvironmentalRemediationExpense	37000000	USD
CY2013	us-gaap	Equity Method Investment Dividends Or Distributions EquityMethodInvestmentDividendsOrDistributions	0	USD
CY2014	us-gaap	Equity Method Investment Dividends Or Distributions EquityMethodInvestmentDividendsOrDistributions	0	USD
CY2015	us-gaap	Equity Method Investment Dividends Or Distributions EquityMethodInvestmentDividendsOrDistributions	31000000	USD
CY2013	us-gaap	Excise Taxes Collected ExciseTaxesCollected	354000000	USD
CY2014	us-gaap	Excise Taxes Collected ExciseTaxesCollected	365000000	USD
CY2015	us-gaap	Excise Taxes Collected ExciseTaxesCollected	354000000	USD
CY2014	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Earnings1 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1	30000000	USD
CY2015	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Earnings1 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1	-20000000	USD
CY2014	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Purchases FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases	22000000	USD
CY2015	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Purchases FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases	11000000	USD
CY2014	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Settlements FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSettlements	48000000	USD
CY2015	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Settlements FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSettlements	6000000	USD
CY2013Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue	9000000	USD
CY2014Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue	20000000	USD
CY2015Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue	6000000	USD
CY2015	us-gaap	Fair Value Measurements Valuation Techniques FairValueMeasurementsValuationTechniques	Discounted Cash Flow
CY2014Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	4000000	USD
CY2015Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	4000000	USD
CY2013	us-gaap	Fuel Costs FuelCosts	320000000	USD
CY2014	us-gaap	Fuel Costs FuelCosts	285000000	USD
CY2015	us-gaap	Fuel Costs FuelCosts	248000000	USD
CY2013	us-gaap	Gain Loss On Contract Termination GainLossOnContractTermination	95000000	USD
CY2014	us-gaap	Gain Loss On Contract Termination GainLossOnContractTermination	0	USD
CY2015	us-gaap	Gain Loss On Contract Termination GainLossOnContractTermination	0	USD
CY2013	us-gaap	Gain Loss On Sale Of Derivatives GainLossOnSaleOfDerivatives	74000000	USD
CY2014	us-gaap	Gain Loss On Sale Of Derivatives GainLossOnSaleOfDerivatives	-128000000	USD
CY2015	us-gaap	Gain Loss On Sale Of Derivatives GainLossOnSaleOfDerivatives	-3000000	USD
CY2013	us-gaap	Gain On Sale Of Investments GainOnSaleOfInvestments	0	USD
CY2014	us-gaap	Gain On Sale Of Investments GainOnSaleOfInvestments	45000000	USD
CY2015	us-gaap	Gain On Sale Of Investments GainOnSaleOfInvestments	0	USD
CY2013	us-gaap	Gas Domestic Regulated Revenue GasDomesticRegulatedRevenue	1821000000	USD
CY2014	us-gaap	Gas Domestic Regulated Revenue GasDomesticRegulatedRevenue	1933000000	USD
CY2015	us-gaap	Gas Domestic Regulated Revenue GasDomesticRegulatedRevenue	1709000000	USD
CY2014Q4	us-gaap	Goodwill Goodwill	429000000	USD
CY2015Q4	us-gaap	Goodwill Goodwill	429000000	USD
CY2014Q4	us-gaap	Guarantee Obligations Maximum Exposure GuaranteeObligationsMaximumExposure	2547000000	USD
CY2015Q4	us-gaap	Guarantee Obligations Maximum Exposure GuaranteeObligationsMaximumExposure	2856000000	USD
CY2015Q4	us-gaap	Guarantee Obligations Maximum Exposure GuaranteeObligationsMaximumExposure	2856000000	USD
CY2013	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	1538000000	USD
CY2014	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	1660000000	USD
CY2015	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	1798000000	USD
CY2014Q4	us-gaap	Income Tax Examination Penalties Accrued IncomeTaxExaminationPenaltiesAccrued	0	USD
CY2015Q4	us-gaap	Income Tax Examination Penalties Accrued IncomeTaxExaminationPenaltiesAccrued	0	USD
CY2013	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	476000000	USD
CY2014	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	568000000	USD
CY2015	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	605000000	USD
CY2015	us-gaap	Income Tax Reconciliation Tax Contingencies IncomeTaxReconciliationTaxContingencies	25000000	USD
CY2013	us-gaap	Income Taxes Paid IncomeTaxesPaid	69000000	USD
CY2014	us-gaap	Income Taxes Paid IncomeTaxesPaid	633000000	USD
CY2015	us-gaap	Income Taxes Paid IncomeTaxesPaid	-36000000	USD
CY2014Q4	us-gaap	Income Taxes Receivable IncomeTaxesReceivable	224000000	USD
CY2015Q4	us-gaap	Income Taxes Receivable IncomeTaxesReceivable	166000000	USD
CY2013	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-118000000	USD
CY2014	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-9000000	USD
CY2015	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-79000000	USD
CY2013	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	29000000	USD
CY2014	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	-44000000	USD
CY2015	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	-96000000	USD
CY2013	us-gaap	Increase Decrease In Deferred Charges IncreaseDecreaseInDeferredCharges	162000000	USD
CY2014	us-gaap	Increase Decrease In Deferred Charges IncreaseDecreaseInDeferredCharges	361000000	USD
CY2015	us-gaap	Increase Decrease In Deferred Charges IncreaseDecreaseInDeferredCharges	111000000	USD
CY2013	us-gaap	Interest Expense Debt InterestExpenseDebt	578000000	USD
CY2014	us-gaap	Interest Expense Debt InterestExpenseDebt	587000000	USD
CY2015	us-gaap	Interest Expense Debt InterestExpenseDebt	632000000	USD
CY2013	us-gaap	Interest Expense Other InterestExpenseOther	143000000	USD
CY2014	us-gaap	Interest Expense Other InterestExpenseOther	5000000	USD
CY2013	us-gaap	Increase Decrease In Deferred Liabilities IncreaseDecreaseInDeferredLiabilities	637000000	USD
CY2014	us-gaap	Increase Decrease In Deferred Liabilities IncreaseDecreaseInDeferredLiabilities	498000000	USD
CY2015	us-gaap	Increase Decrease In Deferred Liabilities IncreaseDecreaseInDeferredLiabilities	182000000	USD
CY2013	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	-257000000	USD
CY2014	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	312000000	USD
CY2015	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	5000000	USD
CY2013	us-gaap	Increase Decrease In Income Taxes Receivable IncreaseDecreaseInIncomeTaxesReceivable	0	USD
CY2014	us-gaap	Increase Decrease In Income Taxes Receivable IncreaseDecreaseInIncomeTaxesReceivable	224000000	USD
CY2015	us-gaap	Increase Decrease In Income Taxes Receivable IncreaseDecreaseInIncomeTaxesReceivable	-58000000	USD
CY2013	us-gaap	Increase Decrease In Interest Payable Net IncreaseDecreaseInInterestPayableNet	96000000	USD
CY2014	us-gaap	Increase Decrease In Interest Payable Net IncreaseDecreaseInInterestPayableNet	-113000000	USD
CY2015	us-gaap	Increase Decrease In Interest Payable Net IncreaseDecreaseInInterestPayableNet	4000000	USD
CY2013	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	33000000	USD
CY2014	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	10000000	USD
CY2015	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-22000000	USD
CY2013	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	44000000	USD
CY2014	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	7000000	USD
CY2015	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	104000000	USD
CY2013	us-gaap	Increase Decrease In Other Receivables IncreaseDecreaseInOtherReceivables	-34000000	USD
CY2014	us-gaap	Increase Decrease In Other Receivables IncreaseDecreaseInOtherReceivables	-4000000	USD
CY2015	us-gaap	Increase Decrease In Other Receivables IncreaseDecreaseInOtherReceivables	32000000	USD
CY2013	us-gaap	Increase Decrease In Pension And Postretirement Obligations IncreaseDecreaseInPensionAndPostretirementObligations	829000000	USD
CY2014	us-gaap	Increase Decrease In Pension And Postretirement Obligations IncreaseDecreaseInPensionAndPostretirementObligations	822000000	USD
CY2015	us-gaap	Increase Decrease In Pension And Postretirement Obligations IncreaseDecreaseInPensionAndPostretirementObligations	756000000	USD
CY2013	us-gaap	Increase Decrease In Prepaid Expense IncreaseDecreaseInPrepaidExpense	-23000000	USD
CY2014	us-gaap	Increase Decrease In Prepaid Expense IncreaseDecreaseInPrepaidExpense	27000000	USD
CY2015	us-gaap	Increase Decrease In Prepaid Expense IncreaseDecreaseInPrepaidExpense	14000000	USD
CY2013	us-gaap	Increase Decrease In Property And Other Taxes Payable IncreaseDecreaseInPropertyAndOtherTaxesPayable	314000000	USD
CY2014	us-gaap	Increase Decrease In Property And Other Taxes Payable IncreaseDecreaseInPropertyAndOtherTaxesPayable	-404000000	USD
CY2015	us-gaap	Increase Decrease In Property And Other Taxes Payable IncreaseDecreaseInPropertyAndOtherTaxesPayable	-10000000	USD
CY2014	us-gaap	Increase Decrease In Regulatory Liabilities IncreaseDecreaseInRegulatoryLiabilities	62000000	USD
CY2013	us-gaap	Increase Decrease In Restricted Cash IncreaseDecreaseInRestrictedCash	22000000	USD
CY2014	us-gaap	Increase Decrease In Restricted Cash IncreaseDecreaseInRestrictedCash	-15000000	USD
CY2015	us-gaap	Increase Decrease In Restricted Cash IncreaseDecreaseInRestrictedCash	13000000	USD
CY2013	us-gaap	Incremental Common Shares Attributable To Contingently Issuable Shares IncrementalCommonSharesAttributableToContingentlyIssuableShares	1500000	shares
CY2014	us-gaap	Incremental Common Shares Attributable To Contingently Issuable Shares IncrementalCommonSharesAttributableToContingentlyIssuableShares	1100000	shares
CY2015	us-gaap	Incremental Common Shares Attributable To Contingently Issuable Shares IncrementalCommonSharesAttributableToContingentlyIssuableShares	1400000	shares
CY2014	us-gaap	Insurance Recoveries InsuranceRecoveries	7000000	USD
CY2015	us-gaap	Insurance Recoveries InsuranceRecoveries	0	USD
CY2015Q4	us-gaap	Insurance Settlements Receivable InsuranceSettlementsReceivable	50000000	USD
CY2014Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	3000000	USD
CY2015Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	2000000	USD
CY2013	us-gaap	Interest And Debt Expense InterestAndDebtExpense	719000000	USD
CY2014	us-gaap	Interest And Debt Expense InterestAndDebtExpense	591000000	USD
CY2015	us-gaap	Interest And Debt Expense InterestAndDebtExpense	653000000	USD
CY2015	us-gaap	Interest Expense Other InterestExpenseOther	24000000	USD
CY2013	us-gaap	Interest Paid InterestPaid	574000000	USD
CY2014	us-gaap	Interest Paid InterestPaid	561000000	USD
CY2015	us-gaap	Interest Paid InterestPaid	597000000	USD
CY2014Q4	us-gaap	Interest Payable Current InterestPayableCurrent	132000000	USD
CY2015Q4	us-gaap	Interest Payable Current InterestPayableCurrent	136000000	USD
CY2013	us-gaap	Investment Income Net InvestmentIncomeNet	24000000	USD
CY2014	us-gaap	Investment Income Net InvestmentIncomeNet	54000000	USD
CY2015	us-gaap	Investment Income Net InvestmentIncomeNet	35000000	USD
CY2014Q4	us-gaap	Letters Of Credit Outstanding Amount LettersOfCreditOutstandingAmount	11000000	USD
CY2015Q4	us-gaap	Letters Of Credit Outstanding Amount LettersOfCreditOutstandingAmount	15000000	USD
CY2014Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	44071000000	USD
CY2015Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	45642000000	USD
CY2014Q4	us-gaap	Liabilities Current LiabilitiesCurrent	3757000000	USD
CY2015Q4	us-gaap	Liabilities Current LiabilitiesCurrent	4720000000	USD
CY2014Q4	us-gaap	Liabilities Noncurrent LiabilitiesNoncurrent	16183000000	USD
CY2015Q4	us-gaap	Liabilities Noncurrent LiabilitiesNoncurrent	15855000000	USD
CY2014Q4	us-gaap	Liabilities Of Disposal Group Including Discontinued Operation Current LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrent	0	USD
CY2015Q4	us-gaap	Liabilities Of Disposal Group Including Discontinued Operation Current LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrent	89000000	USD
CY2015	us-gaap	Line Of Credit Facility Expiration Date1 LineOfCreditFacilityExpirationDate1	2017-10-31
CY2014Q4	us-gaap	Loans Payable Current LoansPayableCurrent	0	USD
CY2015Q4	us-gaap	Loans Payable Current LoansPayableCurrent	0	USD
CY2014Q4	us-gaap	Long Term Debt LongTermDebt	12106000000	USD
CY2015Q4	us-gaap	Long Term Debt LongTermDebt	12745000000	USD
CY2014Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	560000000	USD
CY2015Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	739000000	USD
CY2014Q4	us-gaap	Long Term Debt Fair Value LongTermDebtFairValue	13913000000	USD
CY2015Q4	us-gaap	Long Term Debt Fair Value LongTermDebtFairValue	13856000000	USD
CY2015Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Next Twelve Months LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths	739000000	USD
CY2015Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive	365000000	USD
CY2015Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Four LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour	552000000	USD
CY2015Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Three LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree	1266000000	USD
CY2015Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Two LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo	16000000	USD
CY2014Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	11546000000	USD
CY2015Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	12006000000	USD
CY2014Q4	us-gaap	Long Term Investments LongTermInvestments	816000000	USD
CY2015Q4	us-gaap	Long Term Investments LongTermInvestments	884000000	USD
CY2014Q4	us-gaap	Longterm Transition Bond Current And Noncurrent LongtermTransitionBondCurrentAndNoncurrent	18000000	USD
CY2015Q4	us-gaap	Longterm Transition Bond Current And Noncurrent LongtermTransitionBondCurrentAndNoncurrent	14000000	USD
CY2015	us-gaap	Loss Contingency Loss In Period LossContingencyLossInPeriod	50000000	USD
CY2014Q4	us-gaap	Margin Deposit Assets MarginDepositAssets	27000000	USD
CY2015Q4	us-gaap	Margin Deposit Assets MarginDepositAssets	26000000	USD
CY2014Q4	us-gaap	Minority Interest MinorityInterest	9000000	USD
CY2015Q4	us-gaap	Minority Interest MinorityInterest	9000000	USD
CY2015Q4	us-gaap	Minority Interest Ownership Percentage By Parent MinorityInterestOwnershipPercentageByParent	0.457
CY2013	us-gaap	Net Cash Provided By Used In Financing Activities Continuing Operations NetCashProvidedByUsedInFinancingActivitiesContinuingOperations	387000000	USD
CY2014	us-gaap	Net Cash Provided By Used In Financing Activities Continuing Operations NetCashProvidedByUsedInFinancingActivitiesContinuingOperations	-47000000	USD
CY2015	us-gaap	Net Cash Provided By Used In Financing Activities Continuing Operations NetCashProvidedByUsedInFinancingActivitiesContinuingOperations	629000000	USD
CY2013	us-gaap	Net Cash Provided By Used In Investing Activities Continuing Operations NetCashProvidedByUsedInInvestingActivitiesContinuingOperations	-2659000000	USD
CY2014	us-gaap	Net Cash Provided By Used In Investing Activities Continuing Operations NetCashProvidedByUsedInInvestingActivitiesContinuingOperations	-2759000000	USD
CY2015	us-gaap	Net Cash Provided By Used In Investing Activities Continuing Operations NetCashProvidedByUsedInInvestingActivitiesContinuingOperations	-3657000000	USD
CY2013	us-gaap	Net Cash Provided By Used In Operating Activities Continuing Operations NetCashProvidedByUsedInOperatingActivitiesContinuingOperations	2552000000	USD
CY2014	us-gaap	Net Cash Provided By Used In Operating Activities Continuing Operations NetCashProvidedByUsedInOperatingActivitiesContinuingOperations	2831000000	USD
CY2015	us-gaap	Net Cash Provided By Used In Operating Activities Continuing Operations NetCashProvidedByUsedInOperatingActivitiesContinuingOperations	3277000000	USD
CY2013	us-gaap	Net Income Loss NetIncomeLoss	1062000000	USD
CY2014	us-gaap	Net Income Loss NetIncomeLoss	1092000000	USD
CY2015	us-gaap	Net Income Loss NetIncomeLoss	1193000000	USD
CY2013	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	13000000	USD
CY2014	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	42000000	USD
CY2015	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	24000000	USD
CY2014Q4	us-gaap	Notes Payable Current NotesPayableCurrent	800000000	USD
CY2015Q4	us-gaap	Notes Payable Current NotesPayableCurrent	1529000000	USD
CY2013	us-gaap	Operating Expenses OperatingExpenses	10110000000	USD
CY2014	us-gaap	Operating Expenses OperatingExpenses	10755000000	USD
CY2015	us-gaap	Operating Expenses OperatingExpenses	10127000000	USD
CY2013	us-gaap	Operating Income Loss OperatingIncomeLoss	2244000000	USD
CY2014	us-gaap	Operating Income Loss OperatingIncomeLoss	2209000000	USD
CY2015	us-gaap	Operating Income Loss OperatingIncomeLoss	2427000000	USD
CY2015Q4	us-gaap	Operating Leases Future Minimum Payments Receivable OperatingLeasesFutureMinimumPaymentsReceivable	208000000	USD
CY2015Q4	us-gaap	Operating Leases Future Minimum Payments Receivable Current OperatingLeasesFutureMinimumPaymentsReceivableCurrent	18000000	USD
CY2015Q4	us-gaap	Operating Leases Future Minimum Payments Receivable In Five Years OperatingLeasesFutureMinimumPaymentsReceivableInFiveYears	15000000	USD
CY2015Q4	us-gaap	Operating Leases Future Minimum Payments Receivable In Four Years OperatingLeasesFutureMinimumPaymentsReceivableInFourYears	16000000	USD
CY2015Q4	us-gaap	Operating Leases Future Minimum Payments Receivable In Three Years OperatingLeasesFutureMinimumPaymentsReceivableInThreeYears	18000000	USD
CY2015Q4	us-gaap	Operating Leases Future Minimum Payments Receivable In Two Years OperatingLeasesFutureMinimumPaymentsReceivableInTwoYears	18000000	USD
CY2015Q4	us-gaap	Operating Leases Future Minimum Payments Receivable Thereafter OperatingLeasesFutureMinimumPaymentsReceivableThereafter	123000000	USD
CY2014Q4	us-gaap	Other Assets Current OtherAssetsCurrent	278000000	USD
CY2015Q4	us-gaap	Other Assets Current OtherAssetsCurrent	191000000	USD
CY2014Q4	us-gaap	Other Assets Miscellaneous Noncurrent OtherAssetsMiscellaneousNoncurrent	138000000	USD
CY2015Q4	us-gaap	Other Assets Miscellaneous Noncurrent OtherAssetsMiscellaneousNoncurrent	186000000	USD
CY2014Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	9712000000	USD
CY2015Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	8713000000	USD
CY2014	us-gaap	Other Comprehensive Income Loss Before Reclassifications Net Of Tax OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax	-26000000	USD
CY2015	us-gaap	Other Comprehensive Income Loss Before Reclassifications Net Of Tax OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax	5000000	USD
CY2014	us-gaap	Other Comprehensive Income Loss Before Reclassifications Tax OtherComprehensiveIncomeLossBeforeReclassificationsTax	18000000	USD
CY2015	us-gaap	Other Comprehensive Income Loss Before Reclassifications Tax OtherComprehensiveIncomeLossBeforeReclassificationsTax	-3000000	USD
CY2013	us-gaap	Other Comprehensive Income Loss Before Tax OtherComprehensiveIncomeLossBeforeTax	28000000	USD
CY2014	us-gaap	Other Comprehensive Income Loss Before Tax OtherComprehensiveIncomeLossBeforeTax	-20000000	USD
CY2015	us-gaap	Other Comprehensive Income Loss Before Tax OtherComprehensiveIncomeLossBeforeTax	11000000	USD
CY2013	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	28000000	USD
CY2014	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-20000000	USD
CY2015	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	11000000	USD
CY2013	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-28000000	USD
CY2014	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	20000000	USD
CY2015	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-11000000	USD
CY2014	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansNetOfTax	6000000	USD
CY2015	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansNetOfTax	6000000	USD
CY2014	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansTax	-4000000	USD
CY2015	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansTax	-4000000	USD
CY2014Q4	us-gaap	Other Deferred Credits Noncurrent OtherDeferredCreditsNoncurrent	181000000	USD
CY2015Q4	us-gaap	Other Deferred Credits Noncurrent OtherDeferredCreditsNoncurrent	199000000	USD
CY2013	us-gaap	Other Increase Decrease In Environmental Liabilities OtherIncreaseDecreaseInEnvironmentalLiabilities	-4000000	USD
CY2014	us-gaap	Other Increase Decrease In Environmental Liabilities OtherIncreaseDecreaseInEnvironmentalLiabilities	28000000	USD
CY2015	us-gaap	Other Increase Decrease In Environmental Liabilities OtherIncreaseDecreaseInEnvironmentalLiabilities	22000000	USD
CY2014Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	492000000	USD
CY2015Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	525000000	USD
CY2014Q4	us-gaap	Other Long Term Debt OtherLongTermDebt	380000000	USD
CY2015Q4	us-gaap	Other Long Term Debt OtherLongTermDebt	648000000	USD
CY2013	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-91000000	USD
CY2014	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	35000000	USD
CY2015	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-77000000	USD
CY2013	us-gaap	Other Nonoperating Expense OtherNonoperatingExpense	15000000	USD
CY2014	us-gaap	Other Nonoperating Expense OtherNonoperatingExpense	14000000	USD
CY2015	us-gaap	Other Nonoperating Expense OtherNonoperatingExpense	16000000	USD
CY2014Q4	us-gaap	Other Receivables OtherReceivables	133000000	USD
CY2015Q4	us-gaap	Other Receivables OtherReceivables	304000000	USD
CY2013	us-gaap	Other Sales Revenue Net OtherSalesRevenueNet	1094000000	USD
CY2014	us-gaap	Other Sales Revenue Net OtherSalesRevenueNet	1244000000	USD
CY2015	us-gaap	Other Sales Revenue Net OtherSalesRevenueNet	1384000000	USD
CY2013	us-gaap	Payments For Construction In Process PaymentsForConstructionInProcess	2339000000	USD
CY2014	us-gaap	Payments For Construction In Process PaymentsForConstructionInProcess	2239000000	USD
CY2015	us-gaap	Payments For Construction In Process PaymentsForConstructionInProcess	2562000000	USD
CY2013	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	0	USD
CY2014	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-10000000	USD
CY2015	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	72000000	USD
CY2013	us-gaap	Payments For Proceeds From Removal Costs PaymentsForProceedsFromRemovalCosts	217000000	USD
CY2014	us-gaap	Payments For Proceeds From Removal Costs PaymentsForProceedsFromRemovalCosts	216000000	USD
CY2015	us-gaap	Payments For Proceeds From Removal Costs PaymentsForProceedsFromRemovalCosts	219000000	USD
CY2013	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	8000000	USD
CY2014	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	10000000	USD
CY2015	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	-1000000	USD
CY2013	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	6000000	USD
CY2014	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	17000000	USD
CY2015	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	15000000	USD
CY2013	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	721000000	USD
CY2014	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	739000000	USD
CY2015	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	733000000	USD
CY2013	us-gaap	Payments To Acquire Projects PaymentsToAcquireProjects	175000000	USD
CY2014	us-gaap	Payments To Acquire Projects PaymentsToAcquireProjects	293000000	USD
CY2015	us-gaap	Payments To Acquire Projects PaymentsToAcquireProjects	299000000	USD
CY2013	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	199000000	USD
CY2014	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	180000000	USD
CY2015	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	492000000	USD
CY2013	us-gaap	Pension And Other Postretirement Benefit Contributions PensionAndOtherPostretirementBenefitContributions	887000000	USD
CY2014	us-gaap	Pension And Other Postretirement Benefit Contributions PensionAndOtherPostretirementBenefitContributions	584000000	USD
CY2015	us-gaap	Pension And Other Postretirement Benefit Contributions PensionAndOtherPostretirementBenefitContributions	756000000	USD
CY2014Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent	3914000000	USD
CY2015Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent	2911000000	USD
CY2014Q4	us-gaap	Plant Held For Future Use Amount PlantHeldForFutureUseAmount	76000000	USD
CY2015Q4	us-gaap	Plant Held For Future Use Amount PlantHeldForFutureUseAmount	77000000	USD
CY2014Q4	us-gaap	Prepaid Expense Current PrepaidExpenseCurrent	163000000	USD
CY2015Q4	us-gaap	Prepaid Expense Current PrepaidExpenseCurrent	177000000	USD
CY2013	us-gaap	Proceeds From Divestiture Of Interest In Consolidated Subsidiaries ProceedsFromDivestitureOfInterestInConsolidatedSubsidiaries	0	USD
CY2014	us-gaap	Proceeds From Divestiture Of Interest In Consolidated Subsidiaries ProceedsFromDivestitureOfInterestInConsolidatedSubsidiaries	108000000	USD
CY2015	us-gaap	Proceeds From Divestiture Of Interest In Consolidated Subsidiaries ProceedsFromDivestitureOfInterestInConsolidatedSubsidiaries	0	USD
CY2013	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	919000000	USD
CY2014	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	1850000000	USD
CY2015	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	1147000000	USD
CY2013	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	912000000	USD
CY2014	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	-651000000	USD
CY2015	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	729000000	USD
CY2014Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	29827000000	USD
CY2015Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	32209000000	USD
CY2013	us-gaap	Public Utilities Allowance For Funds Used During Construction Additions PublicUtilitiesAllowanceForFundsUsedDuringConstructionAdditions	4000000	USD
CY2014	us-gaap	Public Utilities Allowance For Funds Used During Construction Additions PublicUtilitiesAllowanceForFundsUsedDuringConstructionAdditions	2000000	USD
CY2015	us-gaap	Public Utilities Allowance For Funds Used During Construction Additions PublicUtilitiesAllowanceForFundsUsedDuringConstructionAdditions	5000000	USD
CY2013	us-gaap	Public Utilities Allowance For Funds Used During Construction Capitalized Cost Of Equity PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity	4000000	USD
CY2014	us-gaap	Public Utilities Allowance For Funds Used During Construction Capitalized Cost Of Equity PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity	2000000	USD
CY2015	us-gaap	Public Utilities Allowance For Funds Used During Construction Capitalized Cost Of Equity PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity	5000000	USD
CY2013	us-gaap	Public Utilities Allowance For Funds Used During Construction Capitalized Interest PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedInterest	-2000000	USD
CY2014	us-gaap	Public Utilities Allowance For Funds Used During Construction Capitalized Interest PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedInterest	-1000000	USD
CY2015	us-gaap	Public Utilities Allowance For Funds Used During Construction Capitalized Interest PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedInterest	-3000000	USD
CY2014Q4	us-gaap	Public Utilities Property Plant And Equipment Accumulated Depreciation PublicUtilitiesPropertyPlantAndEquipmentAccumulatedDepreciation	7614000000	USD
CY2015Q4	us-gaap	Public Utilities Property Plant And Equipment Accumulated Depreciation PublicUtilitiesPropertyPlantAndEquipmentAccumulatedDepreciation	8044000000	USD
CY2014Q4	us-gaap	Public Utilities Property Plant And Equipment Common PublicUtilitiesPropertyPlantAndEquipmentCommon	2465000000	USD
CY2015Q4	us-gaap	Public Utilities Property Plant And Equipment Common PublicUtilitiesPropertyPlantAndEquipmentCommon	2622000000	USD
CY2014Q4	us-gaap	Public Utilities Property Plant And Equipment Construction Work In Progress PublicUtilitiesPropertyPlantAndEquipmentConstructionWorkInProgress	1031000000	USD
CY2015Q4	us-gaap	Public Utilities Property Plant And Equipment Construction Work In Progress PublicUtilitiesPropertyPlantAndEquipmentConstructionWorkInProgress	1003000000	USD
CY2014Q4	us-gaap	Public Utilities Property Plant And Equipment Net PublicUtilitiesPropertyPlantAndEquipmentNet	29326000000	USD
CY2015Q4	us-gaap	Public Utilities Property Plant And Equipment Net PublicUtilitiesPropertyPlantAndEquipmentNet	31133000000	USD
CY2014Q4	us-gaap	Public Utilities Property Plant And Equipment Plant In Service PublicUtilitiesPropertyPlantAndEquipmentPlantInService	35909000000	USD
CY2015Q4	us-gaap	Public Utilities Property Plant And Equipment Plant In Service PublicUtilitiesPropertyPlantAndEquipmentPlantInService	38174000000	USD
CY2015Q4	us-gaap	Ratio Of Indebtedness To Net Capital1 RatioOfIndebtednessToNetCapital1	0.52
CY2014Q4	us-gaap	Regulatory Assets RegulatoryAssets	9280000000	USD
CY2015Q4	us-gaap	Regulatory Assets RegulatoryAssets	8228000000	USD
CY2014Q4	us-gaap	Regulatory Assets Current RegulatoryAssetsCurrent	138000000	USD
CY2015Q4	us-gaap	Regulatory Assets Current RegulatoryAssetsCurrent	132000000	USD
CY2014Q4	us-gaap	Regulatory Assets Noncurrent RegulatoryAssetsNoncurrent	9142000000	USD
CY2015Q4	us-gaap	Regulatory Assets Noncurrent RegulatoryAssetsNoncurrent	8096000000	USD
CY2014Q4	us-gaap	Regulatory Liabilities RegulatoryLiabilities	2156000000	USD
CY2015Q4	us-gaap	Regulatory Liabilities RegulatoryLiabilities	2092000000	USD
CY2014Q4	us-gaap	Regulatory Liability Current RegulatoryLiabilityCurrent	163000000	USD
CY2015Q4	us-gaap	Regulatory Liability Current RegulatoryLiabilityCurrent	115000000	USD
CY2014Q4	us-gaap	Regulatory Liability Noncurrent RegulatoryLiabilityNoncurrent	1993000000	USD
CY2015Q4	us-gaap	Regulatory Liability Noncurrent RegulatoryLiabilityNoncurrent	1977000000	USD
CY2013	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	709000000	USD
CY2014	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	480000000	USD
CY2015	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	500000000	USD
CY2013	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	18000000	USD
CY2014	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	22000000	USD
CY2015	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	23000000	USD
CY2013	us-gaap	Revenue Steam Products And Services RevenueSteamProductsAndServices	683000000	USD
CY2014	us-gaap	Revenue Steam Products And Services RevenueSteamProductsAndServices	628000000	USD
CY2015	us-gaap	Revenue Steam Products And Services RevenueSteamProductsAndServices	629000000	USD
CY2013	us-gaap	Revenues Revenues	12354000000	USD
CY2014	us-gaap	Revenues Revenues	12919000000	USD
CY2015	us-gaap	Revenues Revenues	12554000000	USD
CY2015	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Award Vesting Period1 ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1	P3Y
CY2013	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate	0.1352
CY2014	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate	0.1314
CY2015	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate	0.1582
CY2013	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate Maximum ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRateMaximum	0.0517
CY2014	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate Maximum ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRateMaximum	0.0307
CY2015	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate Maximum ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRateMaximum	0.0328
CY2013	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate Minimum ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRateMinimum	0.0013
CY2014	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate Minimum ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRateMinimum	0.0023
CY2015	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate Minimum ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRateMinimum	0.0064
CY2015Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Maximum Employee Subscription Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardMaximumEmployeeSubscriptionRate	0.20
CY2014	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	4000000	USD
CY2015	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	3000000	USD
CY2015	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod	500	shares
CY2014Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	5000000	USD
CY2015Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	2000000	USD
CY2014Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	229850	shares
CY2015Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	79125	shares
CY2014Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	42.99
CY2015Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	43.50
CY2013Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Per Share Weighted Average Price Of Shares Purchased ShareBasedCompensationArrangementByShareBasedPaymentAwardPerShareWeightedAveragePriceOfSharesPurchased	57.24
CY2014Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Per Share Weighted Average Price Of Shares Purchased ShareBasedCompensationArrangementByShareBasedPaymentAwardPerShareWeightedAveragePriceOfSharesPurchased	56.23
CY2015Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Per Share Weighted Average Price Of Shares Purchased ShareBasedCompensationArrangementByShareBasedPaymentAwardPerShareWeightedAveragePriceOfSharesPurchased	62.75
CY2013	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Shares Purchased For Award ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesPurchasedForAward	864281	shares
CY2014	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Shares Purchased For Award ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesPurchasedForAward	708276	shares
CY2015	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Shares Purchased For Award ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesPurchasedForAward	761784	shares
CY2015	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	42.71
CY2015	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Forfeitures In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice	43.50
CY2013	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1	P3Y
CY2014	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1	P3Y
CY2015	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1	P3Y
CY2015	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P1Y
CY2015	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	150225	shares
CY2014Q4	us-gaap	Stockholders Equity StockholdersEquity	12576000000	USD
CY2015Q4	us-gaap	Stockholders Equity StockholdersEquity	13052000000	USD
CY2012Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	11869000000	USD
CY2013Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	12245000000	USD
CY2014Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	12585000000	USD
CY2015Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	13061000000	USD
CY2013	us-gaap	Tax Adjustments Settlements And Unusual Provisions TaxAdjustmentsSettlementsAndUnusualProvisions	-5000000	USD
CY2014	us-gaap	Tax Adjustments Settlements And Unusual Provisions TaxAdjustmentsSettlementsAndUnusualProvisions	-6000000	USD
CY2015	us-gaap	Tax Adjustments Settlements And Unusual Provisions TaxAdjustmentsSettlementsAndUnusualProvisions	-9000000	USD
CY2013	us-gaap	Taxes Excluding Income And Excise Taxes TaxesExcludingIncomeAndExciseTaxes	1895000000	USD
CY2014	us-gaap	Taxes Excluding Income And Excise Taxes TaxesExcludingIncomeAndExciseTaxes	1877000000	USD
CY2015	us-gaap	Taxes Excluding Income And Excise Taxes TaxesExcludingIncomeAndExciseTaxes	1937000000	USD
CY2014Q4	us-gaap	Taxes Payable Current TaxesPayableCurrent	72000000	USD
CY2015Q4	us-gaap	Taxes Payable Current TaxesPayableCurrent	62000000	USD
CY2012Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	86000000	USD
CY2013Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	9000000	USD
CY2014Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	34000000	USD
CY2015Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	34000000	USD
CY2013	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	86000000	USD
CY2014	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	2000000	USD
CY2015	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	0	USD
CY2013	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	249000000	USD
CY2014	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	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	5000000	USD
CY2014	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	0	USD
CY2015	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	0	USD
CY2013	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	253000000	USD
CY2014	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	27000000	USD
CY2015	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	1000000	USD
CY2013	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	0	USD
CY2014	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	0	USD
CY2015	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	1000000	USD
CY2015Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	34000000	USD
CY2013	us-gaap	Utilities Operating Expense Other UtilitiesOperatingExpenseOther	3137000000	USD
CY2014	us-gaap	Utilities Operating Expense Other UtilitiesOperatingExpenseOther	3294000000	USD
CY2015	us-gaap	Utilities Operating Expense Other UtilitiesOperatingExpenseOther	3344000000	USD
CY2013	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	294400000	shares
CY2014	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	294000000	shares
CY2015	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	294400000	shares
CY2013	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	292900000	shares
CY2014	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	292900000	shares
CY2015	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	293000000	shares
CY2015	us-gaap	Prior Period Reclassification Adjustment Description PriorPeriodReclassificationAdjustmentDescription	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;padding-top:17px;font-size:10pt;"><font style="font-family:Arial;font-size:10pt;color:#5e5e61;font-weight:bold;">Reclassification</font></div><div style="line-height:120%;font-size:10pt;"><font style="font-family:Arial;font-size:10pt;color:#5e5e61;">Certain prior year amounts have been reclassified to conform with the current year presentation.</font></div></div>
CY2015	us-gaap	Use Of Estimates UseOfEstimates	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;padding-top:17px;font-size:10pt;"><font style="font-family:Arial;font-size:10pt;color:#5e5e61;font-weight:bold;">Estimates</font></div><div style="line-height:120%;font-size:10pt;"><font style="font-family:Arial;font-size:10pt;color:#5e5e61;">The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.</font></div></div>

Files In Submission

Name	View Source	Status
0001047862-16-000225-index-headers.html	Edgar Link	pending
0001047862-16-000225-index.html	Edgar Link	pending
0001047862-16-000225.txt	Edgar Link	pending
0001047862-16-000225-xbrl.zip	Edgar Link	pending
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exhibit10114.htm	Edgar Link	pending
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totalreturnperformancea02.jpg	Edgar Link	pending

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$ED
CONSOLIDATED EDISON INC Stock $ed

2015 Form 10-K Financial Statement

#000104786216000225 Filed on February 18, 2016

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$ED CONSOLIDATED EDISON INC Stock $ed

2015 Form 10-K Financial Statement

#000104786216000225 Filed on February 18, 2016

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$ED
CONSOLIDATED EDISON INC Stock $ed