$OGE
OGE Energy Corp Stock $oge

$oge Overview Financials Valuation SEC Filings Company Website

2014 Q4 Form 10-K Financial Statement

#000102163515000020 Filed on February 26, 2015

Income Statement

Concept	2014 Q4	2014	2013 Q4
Revenue	$526.2M	$2.453B	$508.9M
YoY Change	3.4%	-14.46%	-40.97%
Cost Of Revenue	$237.0M	$1.107B	$232.3M
YoY Change	2.02%	-22.56%	-52.05%
Gross Profit	$289.2M	$1.347B	$276.6M
YoY Change	4.56%	-6.42%	-26.75%
Gross Profit Margin	54.96%	54.89%	54.35%
Selling, General & Admin
YoY Change
% of Gross Profit
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$74.20M	$281.4M	$65.60M
YoY Change	13.11%	-5.76%	-35.56%
% of Gross Profit	25.66%	20.9%	23.72%
Operating Expenses	$204.1M	$809.7M	$203.3M
YoY Change	0.39%	-8.54%	-27.44%
Operating Profit	$85.10M	$536.8M	$73.30M
YoY Change	16.1%	-3.02%	-24.67%
Interest Expense	$4.800M	$148.4M	$2.100M
YoY Change	128.57%	0.61%	-105.01%
% of Operating Profit	5.64%	27.65%	2.86%
Other Income/Expense, Net	$4.100M	$180.2M	$2.300M
YoY Change	78.26%	52.58%	283.33%
Pretax Income	$94.00M	$568.6M	$77.70M
YoY Change	20.98%	8.49%	38.75%
Income Tax	$35.60M	$172.8M	$20.10M
% Of Pretax Income	37.87%	30.39%	25.87%
Net Earnings	$58.40M	$395.8M	$57.60M
YoY Change	1.39%	2.12%	49.61%
Net Earnings / Revenue	11.1%	16.13%	11.32%
Basic Earnings Per Share	$0.29	$1.99	$0.29
Diluted Earnings Per Share	$0.29	$1.98	$0.29
COMMON SHARES
Basic Shares Outstanding		199.2M shares
Diluted Shares Outstanding		199.9M shares

Balance Sheet

Concept	2014 Q4	2014	2013 Q4
SHORT-TERM ASSETS
Cash & Short-Term Investments	$6.000M	$6.000M	$7.000M
YoY Change	-14.29%	-14.29%	250.0%
Cash & Equivalents	$5.500M	$6.000M	$6.800M
Short-Term Investments
Other Short-Term Assets	$38.40M	$354.0M	$34.60M
YoY Change	10.98%	5.67%	-23.28%
Inventory	$58.50M	$137.0M	$74.40M
Prepaid Expenses
Receivables	$188.8M	$194.0M	$179.4M
Other Receivables	$16.00M	$16.00M	$5.000M
Total Short-Term Assets	$706.9M	$707.0M	$694.6M
YoY Change	1.77%	1.73%	-12.54%
LONG-TERM ASSETS
Property, Plant & Equipment	$6.980B	$7.050B	$6.673B
YoY Change	4.6%	4.69%	-20.04%
Goodwill			$0.00
YoY Change			-100.0%
Intangibles			$0.00
YoY Change			-100.0%
Long-Term Investments	$1.318B	$1.318B	$1.299B
YoY Change	1.49%	1.46%
Other Assets	$452.7M	$397.0M	$407.5M
YoY Change	11.09%	13.11%	-44.25%
Total Long-Term Assets	$8.803B	$8.821B	$8.440B
YoY Change	4.3%	4.51%	-7.54%
TOTAL ASSETS
Total Short-Term Assets	$706.9M	$707.0M	$694.6M
Total Long-Term Assets	$8.803B	$8.821B	$8.440B
Total Assets	$9.510B	$9.528B	$9.135B
YoY Change	4.11%	4.3%	-7.94%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$179.1M	$179.0M	$251.0M
YoY Change	-28.65%	-28.69%	-36.73%
Accrued Expenses	$81.00M	$81.00M	$100.0M
YoY Change	-19.0%	-19.0%	-9.09%
Deferred Revenue
YoY Change
Short-Term Debt	$98.00M	$98.00M	$439.6M
YoY Change	-77.71%	-77.73%	2.02%
Long-Term Debt Due	$0.00	$0.00	$100.0M
YoY Change	-100.0%	-100.0%
Total Short-Term Liabilities	$573.3M	$573.0M	$1.094B
YoY Change	-47.59%	-47.62%	-14.31%
LONG-TERM LIABILITIES
Long-Term Debt	$2.755B	$2.755B	$2.300B
YoY Change	19.79%	19.78%	-19.26%
Other Long-Term Liabilities	$108.0M	$687.0M	$102.7M
YoY Change	5.16%	19.06%	14.75%
Total Long-Term Liabilities	$2.863B	$3.442B	$2.403B
YoY Change	19.17%	19.64%	-18.22%
TOTAL LIABILITIES
Total Short-Term Liabilities	$573.3M	$573.0M	$1.094B
Total Long-Term Liabilities	$2.863B	$3.442B	$2.403B
Total Liabilities	$6.283B	$6.283B	$6.098B
YoY Change	3.05%	3.03%	-10.98%
SHAREHOLDERS EQUITY
Retained Earnings	$2.198B		$1.992B
YoY Change	10.37%		12.37%
Common Stock	$1.088B		$1.074B
YoY Change	1.3%		2.5%
Preferred Stock
YoY Change
Treasury Stock (at cost)			$0.00
YoY Change			-100.0%
Treasury Stock Shares			100.0K shares
Shareholders Equity	$3.244B	$3.244B	$3.037B
YoY Change
Total Liabilities & Shareholders Equity	$9.528B	$9.528B	$9.135B
YoY Change	4.3%	4.3%	-7.94%

Cashflow Statement

Concept	2014 Q4	2014	2013 Q4
OPERATING ACTIVITIES
Net Income	$58.40M	$395.8M	$57.60M
YoY Change	1.39%	2.12%	49.61%
Depreciation, Depletion And Amortization	$74.20M	$281.4M	$65.60M
YoY Change	13.11%	-5.76%	-35.56%
Cash From Operating Activities	$255.1M	$721.6M	$272.0M
YoY Change	-6.21%	15.79%	-26.11%
INVESTING ACTIVITIES
Capital Expenditures	-$131.9M	-$569.3M	-$217.7M
YoY Change	-39.41%	-42.53%	-39.16%
Acquisitions		$0.00
YoY Change
Other Investing Activities	$100.0K	$10.20M	$100.0K
YoY Change	0.0%	-69.64%	-94.44%
Cash From Investing Activities	-$131.8M	-$559.1M	-$217.6M
YoY Change	-39.43%	-41.58%	-38.88%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net		-$13.20M
YoY Change		-7.04%
Debt Paid & Issued, Net		$240.2M
YoY Change		240100.0%
Cash From Financing Activities	-117.8M	-$163.8M	-47.60M
YoY Change	147.48%	-148.35%	132.2%
NET CHANGE
Cash From Operating Activities	255.1M	$721.6M	272.0M
Cash From Investing Activities	-131.8M	-$559.1M	-217.6M
Cash From Financing Activities	-117.8M	-$163.8M	-47.60M
Net Change In Cash	5.500M	-$1.300M	6.800M
YoY Change	-19.12%	-126.0%	-180.95%
FREE CASH FLOW
Cash From Operating Activities	$255.1M	$721.6M	$272.0M
Capital Expenditures	-$131.9M	-$569.3M	-$217.7M
Free Cash Flow	$387.0M	$1.291B	$489.7M
YoY Change	-20.97%	-20.01%	-32.54%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2014Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	6979900000	USD
CY2012	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	154500000	USD
CY2014	dei	Amendment Flag AmendmentFlag	false
CY2014	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2014	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2014	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2014
CY2014	dei	Document Period End Date DocumentPeriodEndDate	2014-12-31
CY2014	dei	Document Type DocumentType	10-K
CY2014	dei	Entity Central Index Key EntityCentralIndexKey	0001021635
CY2015Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	199481971	shares
CY2014	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2014	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2014Q2	dei	Entity Public Float EntityPublicFloat	7749203331	USD
CY2014	dei	Entity Registrant Name EntityRegistrantName	OGE ENERGY CORP.
CY2014	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2014	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2014	oge	Amounts Reclassified From Accumulated Oci Net Of Tax And Noncontrolling Interest AmountsReclassifiedFromAccumulatedOciNetOfTaxAndNoncontrollingInterest	1000000	USD
CY2013	oge	Amounts Reclassified From Accumulated Oci Net Of Tax And Noncontrolling Interest AmountsReclassifiedFromAccumulatedOciNetOfTaxAndNoncontrollingInterest	7700000	USD
CY2013Q4	oge	Components Of Benefit Obligation Regulatory Asset ComponentsOfBenefitObligationRegulatoryAsset	227400000	USD
CY2014Q4	oge	Components Of Benefit Obligation Regulatory Asset ComponentsOfBenefitObligationRegulatoryAsset	261100000	USD
CY2014Q4	oge	Components Of Net Periodic Benefit Costs To Be Recognized In Next Fiscal Year ComponentsOfNetPeriodicBenefitCostsToBeRecognizedInNextFiscalYear	-4100000	USD
CY2013Q4	oge	Current Deferred Tax Assets Federal Tax Credits CurrentDeferredTaxAssetsFederalTaxCredits	8000000	USD
CY2014Q4	oge	Current Deferred Tax Assets Federal Tax Credits CurrentDeferredTaxAssetsFederalTaxCredits	12400000	USD
CY2013	oge	Deconsolidationofsubsidiary Deconsolidationofsubsidiary	398300000	USD
CY2012	oge	Deferred Income Taxes Attributable To Contributions From Noncontrolling Interest Partners DeferredIncomeTaxesAttributableToContributionsFromNoncontrollingInterestPartners	4200000	USD
CY2013	oge	Deferred Income Taxes Attributable To Contributions From Noncontrolling Interest Partners DeferredIncomeTaxesAttributableToContributionsFromNoncontrollingInterestPartners	8700000	USD
CY2013Q4	oge	Deferred Tax Liabilities Income Taxes Refundable To Customers Net DeferredTaxLiabilitiesIncomeTaxesRefundableToCustomersNet	21900000	USD
CY2014Q4	oge	Deferred Tax Liabilities Income Taxes Refundable To Customers Net DeferredTaxLiabilitiesIncomeTaxesRefundableToCustomersNet	21700000	USD
CY2013Q4	oge	Deferred Tax Liabilities Unamortized Bond Redemption Costs DeferredTaxLiabilitiesUnamortizedBondRedemptionCosts	3600000	USD
CY2014Q4	oge	Deferred Tax Liabilities Unamortized Bond Redemption Costs DeferredTaxLiabilitiesUnamortizedBondRedemptionCosts	5300000	USD
CY2012	oge	Effective Income Tax Rate Reconciliation Amortization Of Net Unfunded Deferred Taxes EffectiveIncomeTaxRateReconciliationAmortizationOfNetUnfundedDeferredTaxes	0.008
CY2014	oge	Effective Income Tax Rate Reconciliation Amortization Of Net Unfunded Deferred Taxes EffectiveIncomeTaxRateReconciliationAmortizationOfNetUnfundedDeferredTaxes	0.006
CY2013	oge	Effective Income Tax Rate Reconciliation Amortization Of Net Unfunded Deferred Taxes EffectiveIncomeTaxRateReconciliationAmortizationOfNetUnfundedDeferredTaxes	0.006
CY2012	oge	Effective Income Tax Rate Reconciliation Changein Deferred Tax Liabilities Valuation Allowance Percent EffectiveIncomeTaxRateReconciliationChangeinDeferredTaxLiabilitiesValuationAllowancePercent	0.000
CY2014	oge	Effective Income Tax Rate Reconciliation Changein Deferred Tax Liabilities Valuation Allowance Percent EffectiveIncomeTaxRateReconciliationChangeinDeferredTaxLiabilitiesValuationAllowancePercent	0.004
CY2013	oge	Effective Income Tax Rate Reconciliation Changein Deferred Tax Liabilities Valuation Allowance Percent EffectiveIncomeTaxRateReconciliationChangeinDeferredTaxLiabilitiesValuationAllowancePercent	-0.041
CY2014Q4	oge	Employee Service Sharebased Compensation Unrecognized Tax Benefitfrom Compensation Expense EmployeeServiceSharebasedCompensationUnrecognizedTaxBenefitfromCompensationExpense	31600000	USD
CY2014	oge	Equity Method Investment Summarized Financial Information Operating Income EquityMethodInvestmentSummarizedFinancialInformationOperatingIncome	586000000	USD
CY2013	oge	Equity Method Investment Summarized Financial Information Operating Income EquityMethodInvestmentSummarizedFinancialInformationOperatingIncome	322000000	USD
CY2014	oge	Equityin Earnings Amortizationof Basis Difference EquityinEarningsAmortizationofBasisDifference	14000000	USD
CY2013	oge	Equityin Earnings Amortizationof Basis Difference EquityinEarningsAmortizationofBasisDifference	9400000	USD
CY2014	oge	Equityin Earnings Eliminationof Fair Value Adjustments EquityinEarningsEliminationofFairValueAdjustments	15500000	USD
CY2013	oge	Equityin Earnings Eliminationof Fair Value Adjustments EquityinEarningsEliminationofFairValueAdjustments	10400000	USD
CY2014	oge	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Claims Paid FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisClaimsPaid	4300000	USD
CY2014	oge	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Dividends FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisDividends	600000	USD
CY2014	oge	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Interest Income FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisInterestIncome	1000000	USD
CY2014	oge	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Unrealized Gains FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisUnrealizedGains	1500000	USD
CY2014	oge	Fair Value Measurementwith Unobservable Inputs Reconciliation Recurring Basis Realized Gains Losses FairValueMeasurementwithUnobservableInputsReconciliationRecurringBasisRealizedGainsLosses	-900000	USD
CY2014	oge	Incentive Distribution Percentage Level IncentiveDistributionPercentageLevel	0.500
CY2012	oge	Increase Decrease In Deferred Fuel Costs Current Liabilities IncreaseDecreaseInDeferredFuelCostsCurrentLiabilities	101500000	USD
CY2014	oge	Increase Decrease In Deferred Fuel Costs Current Liabilities IncreaseDecreaseInDeferredFuelCostsCurrentLiabilities	-400000	USD
CY2013	oge	Increase Decrease In Deferred Fuel Costs Current Liabilities IncreaseDecreaseInDeferredFuelCostsCurrentLiabilities	-108800000	USD
CY2012	oge	Increase Decrease In Regulatory Assets Noncurrent IncreaseDecreaseInRegulatoryAssetsNoncurrent	-20300000	USD
CY2014	oge	Increase Decrease In Regulatory Assets Noncurrent IncreaseDecreaseInRegulatoryAssetsNoncurrent	-4600000	USD
CY2013	oge	Increase Decrease In Regulatory Assets Noncurrent IncreaseDecreaseInRegulatoryAssetsNoncurrent	-26800000	USD
CY2012	oge	Increase Decrease In Regulatory Liabilities Noncurrent IncreaseDecreaseInRegulatoryLiabilitiesNoncurrent	-14800000	USD
CY2014	oge	Increase Decrease In Regulatory Liabilities Noncurrent IncreaseDecreaseInRegulatoryLiabilitiesNoncurrent	-4400000	USD
CY2013	oge	Increase Decrease In Regulatory Liabilities Noncurrent IncreaseDecreaseInRegulatoryLiabilitiesNoncurrent	-32500000	USD
CY2012	oge	Increasedecreaseindistributionsfromunconsolidatedaffiliates Increasedecreaseindistributionsfromunconsolidatedaffiliates	0	USD
CY2014	oge	Increasedecreaseindistributionsfromunconsolidatedaffiliates Increasedecreaseindistributionsfromunconsolidatedaffiliates	143700000	USD
CY2013	oge	Increasedecreaseindistributionsfromunconsolidatedaffiliates Increasedecreaseindistributionsfromunconsolidatedaffiliates	51700000	USD
CY2012	oge	Installment Payments For Tinker Electric Distribution System InstallmentPaymentsForTinkerElectricDistributionSystem	10600000	USD
CY2014	oge	Installment Payments For Tinker Electric Distribution System InstallmentPaymentsForTinkerElectricDistributionSystem	0	USD
CY2013	oge	Installment Payments For Tinker Electric Distribution System InstallmentPaymentsForTinkerElectricDistributionSystem	0	USD
CY2012	oge	Investmentin Enable InvestmentinEnable	0	USD
CY2014	oge	Investmentin Enable InvestmentinEnable	0	USD
CY2013	oge	Investmentin Enable InvestmentinEnable	1248600000	USD
CY2014	oge	Maximum Payout Range MaximumPayoutRange	2.0000
CY2014	oge	Minimum Payout Range MinimumPayoutRange	0.0000
CY2013Q4	oge	Non Current Deferred Tax Asset Net Operating Losses NonCurrentDeferredTaxAssetNetOperatingLosses	18800000	USD
CY2014Q4	oge	Non Current Deferred Tax Asset Net Operating Losses NonCurrentDeferredTaxAssetNetOperatingLosses	19800000	USD
CY2013Q4	oge	Non Current Deferred Tax Assets Deferred Federal Investment Tax Credits NonCurrentDeferredTaxAssetsDeferredFederalInvestmentTaxCredits	700000	USD
CY2014Q4	oge	Non Current Deferred Tax Assets Deferred Federal Investment Tax Credits NonCurrentDeferredTaxAssetsDeferredFederalInvestmentTaxCredits	400000	USD
CY2013Q4	oge	Non Current Deferred Tax Assets Regulatory Liabilities NonCurrentDeferredTaxAssetsRegulatoryLiabilities	61300000	USD
CY2014Q4	oge	Non Current Deferred Tax Assets Regulatory Liabilities NonCurrentDeferredTaxAssetsRegulatoryLiabilities	58000000	USD
CY2013Q4	oge	Non Current Deferred Tax Assets State Tax Credits NonCurrentDeferredTaxAssetsStateTaxCredits	92600000	USD
CY2014Q4	oge	Non Current Deferred Tax Assets State Tax Credits NonCurrentDeferredTaxAssetsStateTaxCredits	98600000	USD
CY2013Q4	oge	Non Current Deferred Tax Liabilities Investmentin Enable Midstream Partners NonCurrentDeferredTaxLiabilitiesInvestmentinEnableMidstreamPartners	630500000	USD
CY2014Q4	oge	Non Current Deferred Tax Liabilities Investmentin Enable Midstream Partners NonCurrentDeferredTaxLiabilitiesInvestmentinEnableMidstreamPartners	641800000	USD
CY2012	oge	Other Comprehensive Income Amortization Of Defined Benefit Postretirement Plans Net Prior Service Cost Recognized In Net Periodic Postretirement Cost Net Of Tax OtherComprehensiveIncomeAmortizationOfDefinedBenefitPostretirementPlansNetPriorServiceCostRecognizedInNetPeriodicPostretirementCostNetOfTax	-1800000	USD
CY2014	oge	Other Comprehensive Income Amortization Of Defined Benefit Postretirement Plans Net Prior Service Cost Recognized In Net Periodic Postretirement Cost Net Of Tax OtherComprehensiveIncomeAmortizationOfDefinedBenefitPostretirementPlansNetPriorServiceCostRecognizedInNetPeriodicPostretirementCostNetOfTax	-1800000	USD
CY2013	oge	Other Comprehensive Income Amortization Of Defined Benefit Postretirement Plans Net Prior Service Cost Recognized In Net Periodic Postretirement Cost Net Of Tax OtherComprehensiveIncomeAmortizationOfDefinedBenefitPostretirementPlansNetPriorServiceCostRecognizedInNetPeriodicPostretirementCostNetOfTax	-1800000	USD
CY2012	oge	Other Comprehensive Income Amortization Of Interest Rate Swap Net Of Tax OtherComprehensiveIncomeAmortizationOfInterestRateSwapNetOfTax	200000	USD
CY2014	oge	Other Comprehensive Income Amortization Of Interest Rate Swap Net Of Tax OtherComprehensiveIncomeAmortizationOfInterestRateSwapNetOfTax	200000	USD
CY2013	oge	Other Comprehensive Income Amortization Of Interest Rate Swap Net Of Tax OtherComprehensiveIncomeAmortizationOfInterestRateSwapNetOfTax	300000	USD
CY2012	oge	Other Comprehensive Income Loss Amortization Defined Benefit Postretirement Plans Net Prior Service Cost Recognized In Net Periodic Benefit Cost Tax Effect OtherComprehensiveIncomeLossAmortizationDefinedBenefitPostretirementPlansNetPriorServiceCostRecognizedInNetPeriodicBenefitCostTaxEffect	-1000000	USD
CY2014	oge	Other Comprehensive Income Loss Amortization Defined Benefit Postretirement Plans Net Prior Service Cost Recognized In Net Periodic Benefit Cost Tax Effect OtherComprehensiveIncomeLossAmortizationDefinedBenefitPostretirementPlansNetPriorServiceCostRecognizedInNetPeriodicBenefitCostTaxEffect	-1100000	USD
CY2013	oge	Other Comprehensive Income Loss Amortization Defined Benefit Postretirement Plans Net Prior Service Cost Recognized In Net Periodic Benefit Cost Tax Effect OtherComprehensiveIncomeLossAmortizationDefinedBenefitPostretirementPlansNetPriorServiceCostRecognizedInNetPeriodicBenefitCostTaxEffect	-1100000	USD
CY2012	oge	Other Comprehensive Income Postretirement Plans Net Unamortized Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomePostretirementPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax	-2300000	USD
CY2014	oge	Other Comprehensive Income Postretirement Plans Net Unamortized Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomePostretirementPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax	-3100000	USD
CY2013	oge	Other Comprehensive Income Postretirement Plans Net Unamortized Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomePostretirementPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax	6900000	USD
CY2012	oge	Other Comprehensive Income Postretirement Plans Net Unamortized Gain Loss Arising During Period Tax OtherComprehensiveIncomePostretirementPlansNetUnamortizedGainLossArisingDuringPeriodTax	-1100000	USD
CY2014	oge	Other Comprehensive Income Postretirement Plans Net Unamortized Gain Loss Arising During Period Tax OtherComprehensiveIncomePostretirementPlansNetUnamortizedGainLossArisingDuringPeriodTax	-1900000	USD
CY2013	oge	Other Comprehensive Income Postretirement Plans Net Unamortized Gain Loss Arising During Period Tax OtherComprehensiveIncomePostretirementPlansNetUnamortizedGainLossArisingDuringPeriodTax	4400000	USD
CY2012	oge	Other Comprehensive Income Reclassification Adjustment On Interest Rate Swaps Included In Net Income Tax OtherComprehensiveIncomeReclassificationAdjustmentOnInterestRateSwapsIncludedInNetIncomeTax	200000	USD
CY2014	oge	Other Comprehensive Income Reclassification Adjustment On Interest Rate Swaps Included In Net Income Tax OtherComprehensiveIncomeReclassificationAdjustmentOnInterestRateSwapsIncludedInNetIncomeTax	100000	USD
CY2013	oge	Other Comprehensive Income Reclassification Adjustment On Interest Rate Swaps Included In Net Income Tax OtherComprehensiveIncomeReclassificationAdjustmentOnInterestRateSwapsIncludedInNetIncomeTax	100000	USD
CY2012	oge	Other Comprehensive Income Reclassification Of Defined Benefit Postretirement Plans Net Gain Loss Recognized In Net Periodic Benefit Cost Net Of Tax OtherComprehensiveIncomeReclassificationOfDefinedBenefitPostretirementPlansNetGainLossRecognizedInNetPeriodicBenefitCostNetOfTax	-2000000	USD
CY2014	oge	Other Comprehensive Income Reclassification Of Defined Benefit Postretirement Plans Net Gain Loss Recognized In Net Periodic Benefit Cost Net Of Tax OtherComprehensiveIncomeReclassificationOfDefinedBenefitPostretirementPlansNetGainLossRecognizedInNetPeriodicBenefitCostNetOfTax	-900000	USD
CY2013	oge	Other Comprehensive Income Reclassification Of Defined Benefit Postretirement Plans Net Gain Loss Recognized In Net Periodic Benefit Cost Net Of Tax OtherComprehensiveIncomeReclassificationOfDefinedBenefitPostretirementPlansNetGainLossRecognizedInNetPeriodicBenefitCostNetOfTax	-2000000	USD
CY2012	oge	Other Comprehensive Income Reclassification Of Defined Benefit Postretirement Plans Net Gain Loss Recognized In Net Periodic Benefit Cost Tax OtherComprehensiveIncomeReclassificationOfDefinedBenefitPostretirementPlansNetGainLossRecognizedInNetPeriodicBenefitCostTax	-1100000	USD
CY2014	oge	Other Comprehensive Income Reclassification Of Defined Benefit Postretirement Plans Net Gain Loss Recognized In Net Periodic Benefit Cost Tax OtherComprehensiveIncomeReclassificationOfDefinedBenefitPostretirementPlansNetGainLossRecognizedInNetPeriodicBenefitCostTax	500000	USD
CY2013	oge	Other Comprehensive Income Reclassification Of Defined Benefit Postretirement Plans Net Gain Loss Recognized In Net Periodic Benefit Cost Tax OtherComprehensiveIncomeReclassificationOfDefinedBenefitPostretirementPlansNetGainLossRecognizedInNetPeriodicBenefitCostTax	1300000	USD
CY2012	oge	Payments To Acquire Productive Assets Including Payments For Business Combination PaymentsToAcquireProductiveAssetsIncludingPaymentsForBusinessCombination	1229200000	USD
CY2014	oge	Payments To Acquire Productive Assets Including Payments For Business Combination PaymentsToAcquireProductiveAssetsIncludingPaymentsForBusinessCombination	569300000	USD
CY2013	oge	Payments To Acquire Productive Assets Including Payments For Business Combination PaymentsToAcquireProductiveAssetsIncludingPaymentsForBusinessCombination	990600000	USD
CY2014Q4	oge	Percent Of Intangible Plant Balance Amortizable PercentOfIntangiblePlantBalanceAmortizable	0.960
CY2014Q4	oge	Percent Of Intangible Plant Balance Amortizable Thereafter PercentOfIntangiblePlantBalanceAmortizableThereafter	0.040
CY2014	oge	Percent Of Principal Amount Subject To Optional Tender PercentOfPrincipalAmountSubjectToOptionalTender	1.0000
CY2014Q4	oge	Postretirement Plan Expected Future Benefit Payments In Year Five PostretirementPlanExpectedFutureBenefitPaymentsInYearFive	17000000	USD
CY2014Q4	oge	Postretirement Plan Expected Future Benefit Payments In Year Four PostretirementPlanExpectedFutureBenefitPaymentsInYearFour	16700000	USD
CY2014Q4	oge	Postretirement Plan Expected Future Benefit Payments In Year One PostretirementPlanExpectedFutureBenefitPaymentsInYearOne	15300000	USD
CY2014Q4	oge	Postretirement Plan Expected Future Benefit Payments In Year Three PostretirementPlanExpectedFutureBenefitPaymentsInYearThree	16300000	USD
CY2014Q4	oge	Postretirement Plan Expected Future Benefit Payments In Year Two PostretirementPlanExpectedFutureBenefitPaymentsInYearTwo	15900000	USD
CY2014Q4	oge	Postretirement Plan Expected Future Benefit Payments Thereafter PostretirementPlanExpectedFutureBenefitPaymentsThereafter	86200000	USD
CY2012	oge	Power Plant Long Term Service Agreement PowerPlantLongTermServiceAgreement	0	USD
CY2014	oge	Power Plant Long Term Service Agreement PowerPlantLongTermServiceAgreement	0	USD
CY2013	oge	Power Plant Long Term Service Agreement PowerPlantLongTermServiceAgreement	9700000	USD
CY2014	oge	Projectedprovisionfordepreciationinnextfiscalyear Projectedprovisionfordepreciationinnextfiscalyear	0.028
CY2014	oge	Proportionate Shareof Unconsolidated Affiliate Net Income ProportionateShareofUnconsolidatedAffiliateNetIncome	143100000	USD
CY2013	oge	Proportionate Shareof Unconsolidated Affiliate Net Income ProportionateShareofUnconsolidatedAffiliateNetIncome	82100000	USD
CY2014	oge	Provision For Depreciation Rate ProvisionForDepreciationRate	0.028
CY2013	oge	Provision For Depreciation Rate ProvisionForDepreciationRate	0.028
CY2014Q4	oge	Thresholdfor Per Unit Incentive Distributions ThresholdforPerUnitIncentiveDistributions	0.330625
CY2013Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	251000000	USD
CY2014Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	179100000	USD
CY2013Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	179400000	USD
CY2014Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	188800000	USD
CY2013Q4	us-gaap	Accounts Receivable Related Parties Current AccountsReceivableRelatedPartiesCurrent	12400000	USD
CY2014Q4	us-gaap	Accounts Receivable Related Parties Current AccountsReceivableRelatedPartiesCurrent	5600000	USD
CY2013Q4	us-gaap	Accrued Environmental Loss Contingencies Noncurrent AccruedEnvironmentalLossContingenciesNoncurrent	6200000	USD
CY2014Q4	us-gaap	Accrued Environmental Loss Contingencies Noncurrent AccruedEnvironmentalLossContingenciesNoncurrent	7500000	USD
CY2013Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	2978800000	USD
CY2014Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	3119000000	USD
CY2013Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-28200000	USD
CY2014Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-41400000	USD
CY2013Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	1071600000	USD
CY2014Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	1085600000	USD
CY2012	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	-2800000	USD
CY2014	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	800000	USD
CY2013	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	900000	USD
CY2013	us-gaap	Adjustments To Additional Paid In Capital Stock Split AdjustmentsToAdditionalPaidInCapitalStockSplit	0	USD
CY2013Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	1900000	USD
CY2014Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	1600000	USD
CY2012Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	54000000	USD
CY2013Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	55200000	USD
CY2014Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	58600000	USD
CY2014	us-gaap	Asset Retirement Obligation Accretion Expense AssetRetirementObligationAccretionExpense	2500000	USD
CY2013	us-gaap	Asset Retirement Obligation Accretion Expense AssetRetirementObligationAccretionExpense	2300000	USD
CY2014	us-gaap	Asset Retirement Obligation Liabilities Settled AssetRetirementObligationLiabilitiesSettled	800000	USD
CY2013	us-gaap	Asset Retirement Obligation Liabilities Settled AssetRetirementObligationLiabilitiesSettled	400000	USD
CY2014	us-gaap	Asset Retirement Obligation Revision Of Estimate AssetRetirementObligationRevisionOfEstimate	1700000	USD
CY2013	us-gaap	Asset Retirement Obligation Revision Of Estimate AssetRetirementObligationRevisionOfEstimate	-700000	USD
CY2012Q4	us-gaap	Assets Assets	9922200000	USD
CY2013Q4	us-gaap	Assets Assets	9134700000	USD
CY2014Q4	us-gaap	Assets Assets	9527800000	USD
CY2013Q4	us-gaap	Assets Current AssetsCurrent	694600000	USD
CY2014Q4	us-gaap	Assets Current AssetsCurrent	705800000	USD
CY2013Q4	us-gaap	Capitalization Longterm Debt And Equity CapitalizationLongtermDebtAndEquity	5437200000	USD
CY2014Q4	us-gaap	Capitalization Longterm Debt And Equity CapitalizationLongtermDebtAndEquity	5999700000	USD
CY2012	us-gaap	Capitalized Computer Software Amortization CapitalizedComputerSoftwareAmortization	14100000	USD
CY2014	us-gaap	Capitalized Computer Software Amortization CapitalizedComputerSoftwareAmortization	9500000	USD
CY2013	us-gaap	Capitalized Computer Software Amortization CapitalizedComputerSoftwareAmortization	11200000	USD
CY2013Q4	us-gaap	Capitalized Computer Software Net CapitalizedComputerSoftwareNet	24000000	USD
CY2014Q4	us-gaap	Capitalized Computer Software Net CapitalizedComputerSoftwareNet	38100000	USD
CY2011Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	4600000	USD
CY2012Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	1800000	USD
CY2013Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	6800000	USD
CY2014Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	5500000	USD
CY2012	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	-2800000	USD
CY2014	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	-1300000	USD
CY2013	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	5000000	USD
CY2013Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2014Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2012	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.7975
CY2014	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.95
CY2013	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.85125
CY2013Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2014Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2013Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	450000000	shares
CY2014Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	450000000	shares
CY2013Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	198500000	shares
CY2014Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	199400000	shares
CY2013Q4	us-gaap	Common Stock Value CommonStockValue	2000000	USD
CY2014Q4	us-gaap	Common Stock Value CommonStockValue	2000000	USD
CY2013Q4	us-gaap	Common Stocks Including Additional Paid In Capital CommonStocksIncludingAdditionalPaidInCapital	1073600000	USD
CY2014Q4	us-gaap	Common Stocks Including Additional Paid In Capital CommonStocksIncludingAdditionalPaidInCapital	1087600000	USD
CY2012	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	346500000	USD
CY2014	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	382600000	USD
CY2013	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	408500000	USD
CY2012	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	26500000	USD
CY2014	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	0	USD
CY2013	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	6300000	USD
CY2014Q4	us-gaap	Construction In Progress Gross ConstructionInProgressGross	115900000	USD
CY2012	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	7300000	USD
CY2014	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	7600000	USD
CY2012	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	373000000	USD
CY2014	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	382600000	USD
CY2012	us-gaap	Cost Of Domestic Regulated Electric CostOfDomesticRegulatedElectric	831400000	USD
CY2013	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	420900000	USD
CY2013Q4	us-gaap	Construction In Progress Gross ConstructionInProgressGross	468500000	USD
CY2014	us-gaap	Cost Of Domestic Regulated Electric CostOfDomesticRegulatedElectric	1106600000	USD
CY2013	us-gaap	Cost Of Domestic Regulated Electric CostOfDomesticRegulatedElectric	950000000	USD
CY2012	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	1918700000	USD
CY2014	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	1106600000	USD
CY2013	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	1428900000	USD
CY2012	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	-9100000	USD
CY2014	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	0	USD
CY2013	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	0	USD
CY2012	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	-8600000	USD
CY2014	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	-4500000	USD
CY2013	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	4300000	USD
CY2012	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	500000	USD
CY2014	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	-4500000	USD
CY2013	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	4300000	USD
CY2013Q4	us-gaap	Customer Deposits Current CustomerDepositsCurrent	70900000	USD
CY2014Q4	us-gaap	Customer Deposits Current CustomerDepositsCurrent	73700000	USD
CY2012	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	147300000	USD
CY2014	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	160000000	USD
CY2013	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	154400000	USD
CY2013Q4	us-gaap	Deferred Fuel Cost DeferredFuelCost	26200000	USD
CY2014Q4	us-gaap	Deferred Fuel Cost DeferredFuelCost	68300000	USD
CY2012	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	145800000	USD
CY2014	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	178200000	USD
CY2013	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	128000000	USD
CY2012	us-gaap	Deferred Income Taxes And Tax Credits DeferredIncomeTaxesAndTaxCredits	143700000	USD
CY2014	us-gaap	Deferred Income Taxes And Tax Credits DeferredIncomeTaxesAndTaxCredits	177300000	USD
CY2013	us-gaap	Deferred Income Taxes And Tax Credits DeferredIncomeTaxesAndTaxCredits	125900000	USD
CY2012	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-1500000	USD
CY2014	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	18200000	USD
CY2013	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-26400000	USD
CY2014Q4	us-gaap	Deferred Storm And Property Reserve Deficiency Current DeferredStormAndPropertyReserveDeficiencyCurrent	2700000	USD
CY2013Q4	us-gaap	Deferred Tax Assets Gross Current DeferredTaxAssetsGrossCurrent	215800000	USD
CY2014Q4	us-gaap	Deferred Tax Assets Gross Current DeferredTaxAssetsGrossCurrent	191400000	USD
CY2013Q4	us-gaap	Deferred Tax Assets Gross Noncurrent DeferredTaxAssetsGrossNoncurrent	366800000	USD
CY2014Q4	us-gaap	Deferred Tax Assets Gross Noncurrent DeferredTaxAssetsGrossNoncurrent	398400000	USD
CY2013Q4	us-gaap	Deferred Tax Assets Net Current DeferredTaxAssetsNetCurrent	215800000	USD
CY2014Q4	us-gaap	Deferred Tax Assets Net Current DeferredTaxAssetsNetCurrent	191400000	USD
CY2013Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	180100000	USD
CY2014Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	158400000	USD
CY2013Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	4600000	USD
CY2014Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	4800000	USD
CY2013Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards DeferredTaxAssetsTaxCreditCarryforwards	105200000	USD
CY2014Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards DeferredTaxAssetsTaxCreditCarryforwards	139000000	USD
CY2013Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Postretirement Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPostretirementBenefits	62800000	USD
CY2014Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Postretirement Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPostretirementBenefits	56400000	USD
CY2013Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Accrued Liabilities DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities	22300000	USD
CY2014Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Accrued Liabilities DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities	15600000	USD
CY2013Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Allowance For Doubtful Accounts DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts	700000	USD
CY2014Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Allowance For Doubtful Accounts DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts	600000	USD
CY2013Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Asset Retirement Obligations DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAssetRetirementObligations	20800000	USD
CY2014Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Asset Retirement Obligations DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAssetRetirementObligations	21400000	USD
CY2013Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Other DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsOther	4700000	USD
CY2014Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Other DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsOther	4400000	USD
CY2013Q4	us-gaap	Deferred Tax Liabilities Derivatives DeferredTaxLiabilitiesDerivatives	1600000	USD
CY2014Q4	us-gaap	Deferred Tax Liabilities Derivatives DeferredTaxLiabilitiesDerivatives	1800000	USD
CY2013Q4	us-gaap	Deferred Tax Liabilities Gross Noncurrent DeferredTaxLiabilitiesGrossNoncurrent	2492100000	USD
CY2014Q4	us-gaap	Deferred Tax Liabilities Gross Noncurrent DeferredTaxLiabilitiesGrossNoncurrent	2666700000	USD
CY2013Q4	us-gaap	Deferred Tax Liabilities Noncurrent DeferredTaxLiabilitiesNoncurrent	2125300000	USD
CY2014Q4	us-gaap	Deferred Tax Liabilities Noncurrent DeferredTaxLiabilitiesNoncurrent	2268300000	USD
CY2013Q4	us-gaap	Deferred Tax Liabilities Prepaid Expenses DeferredTaxLiabilitiesPrepaidExpenses	55100000	USD
CY2014Q4	us-gaap	Deferred Tax Liabilities Prepaid Expenses DeferredTaxLiabilitiesPrepaidExpenses	34600000	USD
CY2013Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	1753300000	USD
CY2014Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	1936800000	USD
CY2013Q4	us-gaap	Deferred Tax Liabilities Regulatory Assets DeferredTaxLiabilitiesRegulatoryAssets	26100000	USD
CY2014Q4	us-gaap	Deferred Tax Liabilities Regulatory Assets DeferredTaxLiabilitiesRegulatoryAssets	24700000	USD
CY2014	us-gaap	Defined Benefit Plan Contributions By Employer DefinedBenefitPlanContributionsByEmployer	0	USD
CY2013	us-gaap	Defined Benefit Plan Contributions By Employer DefinedBenefitPlanContributionsByEmployer	35000000	USD
CY2012	us-gaap	Defined Benefit Plan Effect Of One Percentage Point Decrease On Accumulated Postretirement Benefit Obligation1 DefinedBenefitPlanEffectOfOnePercentagePointDecreaseOnAccumulatedPostretirementBenefitObligation1	900000	USD
CY2014	us-gaap	Defined Benefit Plan Effect Of One Percentage Point Decrease On Accumulated Postretirement Benefit Obligation1 DefinedBenefitPlanEffectOfOnePercentagePointDecreaseOnAccumulatedPostretirementBenefitObligation1	700000	USD
CY2013	us-gaap	Defined Benefit Plan Effect Of One Percentage Point Decrease On Accumulated Postretirement Benefit Obligation1 DefinedBenefitPlanEffectOfOnePercentagePointDecreaseOnAccumulatedPostretirementBenefitObligation1	600000	USD
CY2012	us-gaap	Defined Benefit Plan Effect Of One Percentage Point Decrease On Service And Interest Cost Components1 DefinedBenefitPlanEffectOfOnePercentagePointDecreaseOnServiceAndInterestCostComponents1	100000	USD
CY2014	us-gaap	Defined Benefit Plan Effect Of One Percentage Point Decrease On Service And Interest Cost Components1 DefinedBenefitPlanEffectOfOnePercentagePointDecreaseOnServiceAndInterestCostComponents1	100000	USD
CY2013	us-gaap	Defined Benefit Plan Effect Of One Percentage Point Decrease On Service And Interest Cost Components1 DefinedBenefitPlanEffectOfOnePercentagePointDecreaseOnServiceAndInterestCostComponents1	100000	USD
CY2012	us-gaap	Defined Benefit Plan Effect Of One Percentage Point Increase On Accumulated Postretirement Benefit Obligation DefinedBenefitPlanEffectOfOnePercentagePointIncreaseOnAccumulatedPostretirementBenefitObligation	100000	USD
CY2014	us-gaap	Defined Benefit Plan Effect Of One Percentage Point Increase On Accumulated Postretirement Benefit Obligation DefinedBenefitPlanEffectOfOnePercentagePointIncreaseOnAccumulatedPostretirementBenefitObligation	100000	USD
CY2013	us-gaap	Defined Benefit Plan Effect Of One Percentage Point Increase On Accumulated Postretirement Benefit Obligation DefinedBenefitPlanEffectOfOnePercentagePointIncreaseOnAccumulatedPostretirementBenefitObligation	100000	USD
CY2012	us-gaap	Defined Benefit Plan Effect Of One Percentage Point Increase On Service And Interest Cost Components DefinedBenefitPlanEffectOfOnePercentagePointIncreaseOnServiceAndInterestCostComponents	0	USD
CY2014	us-gaap	Defined Benefit Plan Effect Of One Percentage Point Increase On Service And Interest Cost Components DefinedBenefitPlanEffectOfOnePercentagePointIncreaseOnServiceAndInterestCostComponents	0	USD
CY2013	us-gaap	Defined Benefit Plan Effect Of One Percentage Point Increase On Service And Interest Cost Components DefinedBenefitPlanEffectOfOnePercentagePointIncreaseOnServiceAndInterestCostComponents	0	USD
CY2014Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Five Fiscal Years Thereafter DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter	247800000	USD
CY2014Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Next Twelve Months DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths	98300000	USD
CY2014Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Five DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive	84800000	USD
CY2014Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Four DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour	70400000	USD
CY2014Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Three DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree	75600000	USD
CY2014Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Two DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo	80600000	USD
CY2012	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	51400000	USD
CY2014	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	19300000	USD
CY2013	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	60000000	USD
CY2012	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	13400000	USD
CY2014	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	15200000	USD
CY2013	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	14200000	USD
CY2012	us-gaap	Depreciation Amortization And Accretion Net DepreciationAmortizationAndAccretionNet	375200000	USD
CY2014	us-gaap	Depreciation Amortization And Accretion Net DepreciationAmortizationAndAccretionNet	281400000	USD
CY2013	us-gaap	Depreciation Amortization And Accretion Net DepreciationAmortizationAndAccretionNet	298600000	USD
CY2012	us-gaap	Depreciation And Amortization DepreciationAndAmortization	371400000	USD
CY2014	us-gaap	Depreciation And Amortization DepreciationAndAmortization	281400000	USD
CY2013	us-gaap	Depreciation And Amortization DepreciationAndAmortization	297300000	USD
CY2014	us-gaap	Derivative Gain Loss On Derivative Net DerivativeGainLossOnDerivativeNet	0	USD
CY2012	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	157400000	USD
CY2014	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	189300000	USD
CY2013	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	168800000	USD
CY2013Q4	us-gaap	Dividends Payable Current DividendsPayableCurrent	44700000	USD
CY2014Q4	us-gaap	Dividends Payable Current DividendsPayableCurrent	49900000	USD
CY2012	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.80
CY2013Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.12
CY2013Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.46
CY2013Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.08
CY2014Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.25
CY2014Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.94
CY2014	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.99
CY2013Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.29
CY2013	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.96
CY2014Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.51
CY2014Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.29
CY2012	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.79
CY2013Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.12
CY2013Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.46
CY2013Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.08
CY2014Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.25
CY2014Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.94
CY2014	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.98
CY2013Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.29
CY2013	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.94
CY2014Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.50
CY2014Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.29
CY2012	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.260
CY2014	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.304
CY2013	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.249
CY2012	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.350
CY2014	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.350
CY2013	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.350
CY2012	us-gaap	Effective Income Tax Rate Reconciliation Deductions Employee Stock Ownership Plan Dividends EffectiveIncomeTaxRateReconciliationDeductionsEmployeeStockOwnershipPlanDividends	-0.005
CY2014	us-gaap	Effective Income Tax Rate Reconciliation Deductions Employee Stock Ownership Plan Dividends EffectiveIncomeTaxRateReconciliationDeductionsEmployeeStockOwnershipPlanDividends	-0.005
CY2013	us-gaap	Effective Income Tax Rate Reconciliation Deductions Employee Stock Ownership Plan Dividends EffectiveIncomeTaxRateReconciliationDeductionsEmployeeStockOwnershipPlanDividends	-0.005
CY2012	us-gaap	Effective Income Tax Rate Reconciliation Minority Interest Income Expense EffectiveIncomeTaxRateReconciliationMinorityInterestIncomeExpense	-0.016
CY2014	us-gaap	Effective Income Tax Rate Reconciliation Minority Interest Income Expense EffectiveIncomeTaxRateReconciliationMinorityInterestIncomeExpense	0.000
CY2013	us-gaap	Effective Income Tax Rate Reconciliation Minority Interest Income Expense EffectiveIncomeTaxRateReconciliationMinorityInterestIncomeExpense	-0.003
CY2012	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.000
CY2014	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.001
CY2013	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.001
CY2012	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	-0.001
CY2014	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.012
CY2013	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.004
CY2012	us-gaap	Effective Income Tax Rate Reconciliation Tax Contingencies EffectiveIncomeTaxRateReconciliationTaxContingencies	0.000
CY2014	us-gaap	Effective Income Tax Rate Reconciliation Tax Contingencies EffectiveIncomeTaxRateReconciliationTaxContingencies	0.005
CY2013	us-gaap	Effective Income Tax Rate Reconciliation Tax Contingencies EffectiveIncomeTaxRateReconciliationTaxContingencies	0.015
CY2012	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits Investment EffectiveIncomeTaxRateReconciliationTaxCreditsInvestment	-0.004
CY2014	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits Investment EffectiveIncomeTaxRateReconciliationTaxCreditsInvestment	-0.002
CY2013	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits Investment EffectiveIncomeTaxRateReconciliationTaxCreditsInvestment	-0.004
CY2012	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits Other EffectiveIncomeTaxRateReconciliationTaxCreditsOther	-0.072
CY2014	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits Other EffectiveIncomeTaxRateReconciliationTaxCreditsOther	-0.067
CY2013	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits Other EffectiveIncomeTaxRateReconciliationTaxCreditsOther	-0.072
CY2012	us-gaap	Electric Domestic Regulated Revenue ElectricDomesticRegulatedRevenue	2128700000	USD
CY2014	us-gaap	Electric Domestic Regulated Revenue ElectricDomesticRegulatedRevenue	2453100000	USD
CY2013	us-gaap	Electric Domestic Regulated Revenue ElectricDomesticRegulatedRevenue	2259700000	USD
CY2013Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	56900000	USD
CY2014Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	38200000	USD
CY2012	us-gaap	Employee Service Share Based Compensation Cash Received From Exercise Of Stock Options EmployeeServiceShareBasedCompensationCashReceivedFromExerciseOfStockOptions	800000	USD
CY2013	us-gaap	Employee Service Share Based Compensation Cash Received From Exercise Of Stock Options EmployeeServiceShareBasedCompensationCashReceivedFromExerciseOfStockOptions	400000	USD
CY2014Q4	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized	9400000	USD
CY2012	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	4900000	USD
CY2014	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	3300000	USD
CY2013	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	3100000	USD
CY2014Q4	us-gaap	Equity Method Investment Difference Between Carrying Amount And Underlying Equity EquityMethodInvestmentDifferenceBetweenCarryingAmountAndUnderlyingEquity	1000000000	USD
CY2014	us-gaap	Equity Method Investment Summarized Financial Information Cost Of Sales EquityMethodInvestmentSummarizedFinancialInformationCostOfSales	1914000000	USD
CY2013	us-gaap	Equity Method Investment Summarized Financial Information Cost Of Sales EquityMethodInvestmentSummarizedFinancialInformationCostOfSales	1241000000	USD
CY2013Q4	us-gaap	Equity Method Investment Summarized Financial Information Current Assets EquityMethodInvestmentSummarizedFinancialInformationCurrentAssets	549000000	USD
CY2014Q4	us-gaap	Equity Method Investment Summarized Financial Information Current Assets EquityMethodInvestmentSummarizedFinancialInformationCurrentAssets	438000000	USD
CY2013Q4	us-gaap	Equity Method Investment Summarized Financial Information Current Liabilities EquityMethodInvestmentSummarizedFinancialInformationCurrentLiabilities	720000000	USD
CY2014Q4	us-gaap	Equity Method Investment Summarized Financial Information Current Liabilities EquityMethodInvestmentSummarizedFinancialInformationCurrentLiabilities	671000000	USD
CY2014	us-gaap	Equity Method Investment Summarized Financial Information Net Income Loss EquityMethodInvestmentSummarizedFinancialInformationNetIncomeLoss	530000000	USD
CY2013	us-gaap	Equity Method Investment Summarized Financial Information Net Income Loss EquityMethodInvestmentSummarizedFinancialInformationNetIncomeLoss	289000000	USD
CY2013Q4	us-gaap	Equity Method Investment Summarized Financial Information Noncurrent Assets EquityMethodInvestmentSummarizedFinancialInformationNoncurrentAssets	10683000000	USD
CY2014Q4	us-gaap	Equity Method Investment Summarized Financial Information Noncurrent Assets EquityMethodInvestmentSummarizedFinancialInformationNoncurrentAssets	11399000000	USD
CY2013Q4	us-gaap	Equity Method Investment Summarized Financial Information Noncurrent Liabilities EquityMethodInvestmentSummarizedFinancialInformationNoncurrentLiabilities	2331000000	USD
CY2014Q4	us-gaap	Equity Method Investment Summarized Financial Information Noncurrent Liabilities EquityMethodInvestmentSummarizedFinancialInformationNoncurrentLiabilities	2344000000	USD
CY2014	us-gaap	Equity Method Investment Summarized Financial Information Revenue EquityMethodInvestmentSummarizedFinancialInformationRevenue	3367000000	USD
CY2013	us-gaap	Equity Method Investment Summarized Financial Information Revenue EquityMethodInvestmentSummarizedFinancialInformationRevenue	2123000000	USD
CY2013Q4	us-gaap	Equity Method Investments EquityMethodInvestments	1298800000	USD
CY2014Q4	us-gaap	Equity Method Investments EquityMethodInvestments	1318200000	USD
CY2013Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue	53100000	USD
CY2014Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue	51000000	USD
CY2012	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	-4200000	USD
CY2014	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	200000	USD
CY2013	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	8600000	USD
CY2012	us-gaap	Gain On Business Interruption Insurance Recovery GainOnBusinessInterruptionInsuranceRecovery	7500000	USD
CY2014	us-gaap	Gain On Business Interruption Insurance Recovery GainOnBusinessInterruptionInsuranceRecovery	0	USD
CY2013	us-gaap	Gain On Business Interruption Insurance Recovery GainOnBusinessInterruptionInsuranceRecovery	0	USD
CY2012	us-gaap	Gas Gathering Transportation Marketing And Processing Costs GasGatheringTransportationMarketingAndProcessingCosts	1087300000	USD
CY2014	us-gaap	Gas Gathering Transportation Marketing And Processing Costs GasGatheringTransportationMarketingAndProcessingCosts	0	USD
CY2013	us-gaap	Gas Gathering Transportation Marketing And Processing Costs GasGatheringTransportationMarketingAndProcessingCosts	478900000	USD
CY2012	us-gaap	Gas Gathering Transportation Marketing And Processing Revenue GasGatheringTransportationMarketingAndProcessingRevenue	1542500000	USD
CY2014	us-gaap	Gas Gathering Transportation Marketing And Processing Revenue GasGatheringTransportationMarketingAndProcessingRevenue	0	USD
CY2013	us-gaap	Gas Gathering Transportation Marketing And Processing Revenue GasGatheringTransportationMarketingAndProcessingRevenue	608000000	USD
CY2012	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	520100000	USD
CY2014	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	568600000	USD
CY2013	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	524100000	USD
CY2012	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	0	USD
CY2014	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	172600000	USD
CY2013	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	101900000	USD
CY2012	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	135100000	USD
CY2014	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	172800000	USD
CY2013	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	130300000	USD
CY2012	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	-9100000	USD
CY2014	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	200000	USD
CY2013	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	-1100000	USD
CY2013Q4	us-gaap	Income Taxes Receivable IncomeTaxesReceivable	5600000	USD
CY2014Q4	us-gaap	Income Taxes Receivable IncomeTaxesReceivable	16000000	USD
CY2012	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	25100000	USD
CY2014	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-64000000	USD
CY2013	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	56900000	USD
CY2012	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	-27100000	USD
CY2014	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	9400000	USD
CY2013	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	34000000	USD
CY2012	us-gaap	Increase Decrease In Accounts Receivable Related Parties IncreaseDecreaseInAccountsReceivableRelatedParties	0	USD
CY2014	us-gaap	Increase Decrease In Accounts Receivable Related Parties IncreaseDecreaseInAccountsReceivableRelatedParties	-6800000	USD
CY2013	us-gaap	Increase Decrease In Accounts Receivable Related Parties IncreaseDecreaseInAccountsReceivableRelatedParties	-3700000	USD
CY2012	us-gaap	Increase Decrease In Deferred Fuel Costs IncreaseDecreaseInDeferredFuelCosts	-1800000	USD
CY2014	us-gaap	Increase Decrease In Deferred Fuel Costs IncreaseDecreaseInDeferredFuelCosts	42100000	USD
CY2013	us-gaap	Increase Decrease In Deferred Fuel Costs IncreaseDecreaseInDeferredFuelCosts	26200000	USD
CY2012	us-gaap	Increase Decrease In Due To Affiliates IncreaseDecreaseInDueToAffiliates	0	USD
CY2014	us-gaap	Increase Decrease In Due To Affiliates IncreaseDecreaseInDueToAffiliates	0	USD
CY2013	us-gaap	Increase Decrease In Due To Affiliates IncreaseDecreaseInDueToAffiliates	129600000	USD
CY2012	us-gaap	Increase Decrease In Income Taxes Receivable IncreaseDecreaseInIncomeTaxesReceivable	-1100000	USD
CY2014	us-gaap	Increase Decrease In Income Taxes Receivable IncreaseDecreaseInIncomeTaxesReceivable	10400000	USD
CY2013	us-gaap	Increase Decrease In Income Taxes Receivable IncreaseDecreaseInIncomeTaxesReceivable	-1600000	USD
CY2012	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-13700000	USD
CY2014	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-20400000	USD
CY2013	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-5100000	USD
CY2012	us-gaap	Increase Decrease In Other Current Assets IncreaseDecreaseInOtherCurrentAssets	8600000	USD
CY2014	us-gaap	Increase Decrease In Other Current Assets IncreaseDecreaseInOtherCurrentAssets	2700000	USD
CY2013	us-gaap	Increase Decrease In Other Current Assets IncreaseDecreaseInOtherCurrentAssets	4500000	USD
CY2012	us-gaap	Increase Decrease In Other Current Liabilities IncreaseDecreaseInOtherCurrentLiabilities	6400000	USD
CY2014	us-gaap	Increase Decrease In Other Current Liabilities IncreaseDecreaseInOtherCurrentLiabilities	-11800000	USD
CY2013	us-gaap	Increase Decrease In Other Current Liabilities IncreaseDecreaseInOtherCurrentLiabilities	-7300000	USD
CY2012	us-gaap	Increase Decrease In Other Noncurrent Assets IncreaseDecreaseInOtherNoncurrentAssets	6900000	USD
CY2014	us-gaap	Increase Decrease In Other Noncurrent Assets IncreaseDecreaseInOtherNoncurrentAssets	16300000	USD
CY2013	us-gaap	Increase Decrease In Other Noncurrent Assets IncreaseDecreaseInOtherNoncurrentAssets	-1300000	USD
CY2012	us-gaap	Increase Decrease In Other Noncurrent Liabilities IncreaseDecreaseInOtherNoncurrentLiabilities	-14300000	USD
CY2014	us-gaap	Increase Decrease In Other Noncurrent Liabilities IncreaseDecreaseInOtherNoncurrentLiabilities	29600000	USD
CY2013	us-gaap	Increase Decrease In Other Noncurrent Liabilities IncreaseDecreaseInOtherNoncurrentLiabilities	-7000000	USD
CY2012	us-gaap	Increase Decrease In Unbilled Receivables IncreaseDecreaseInUnbilledReceivables	-1900000	USD
CY2014	us-gaap	Increase Decrease In Unbilled Receivables IncreaseDecreaseInUnbilledReceivables	-3200000	USD
CY2013	us-gaap	Increase Decrease In Unbilled Receivables IncreaseDecreaseInUnbilledReceivables	1300000	USD
CY2012	us-gaap	Incremental Common Shares Attributable To Contingently Issuable Shares IncrementalCommonSharesAttributableToContingentlyIssuableShares	1000000	shares
CY2014	us-gaap	Incremental Common Shares Attributable To Contingently Issuable Shares IncrementalCommonSharesAttributableToContingentlyIssuableShares	700000	shares
CY2013	us-gaap	Incremental Common Shares Attributable To Contingently Issuable Shares IncrementalCommonSharesAttributableToContingentlyIssuableShares	1200000	shares
CY2012	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	8000000	USD
CY2014	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	2400000	USD
CY2013	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	5400000	USD
CY2012	us-gaap	Interest Expense InterestExpense	164100000	USD
CY2014	us-gaap	Interest Expense InterestExpense	148400000	USD
CY2013	us-gaap	Interest Expense InterestExpense	147500000	USD
CY2012	us-gaap	Interest Expense Long Term Debt InterestExpenseLongTermDebt	158900000	USD
CY2014	us-gaap	Interest Expense Long Term Debt InterestExpenseLongTermDebt	144600000	USD
CY2013	us-gaap	Interest Expense Long Term Debt InterestExpenseLongTermDebt	145600000	USD
CY2012	us-gaap	Interest Expense Short Term Borrowings InterestExpenseShortTermBorrowings	8700000	USD
CY2014	us-gaap	Interest Expense Short Term Borrowings InterestExpenseShortTermBorrowings	6200000	USD
CY2013	us-gaap	Interest Expense Short Term Borrowings InterestExpenseShortTermBorrowings	5300000	USD
CY2012	us-gaap	Interest Paid Net InterestPaidNet	161300000	USD
CY2014	us-gaap	Interest Paid Net InterestPaidNet	150800000	USD
CY2013	us-gaap	Interest Paid Net InterestPaidNet	151100000	USD
CY2013Q4	us-gaap	Interest Payable Current InterestPayableCurrent	43400000	USD
CY2014Q4	us-gaap	Interest Payable Current InterestPayableCurrent	43000000	USD
CY2013Q4	us-gaap	Inventory Net InventoryNet	74400000	USD
CY2014Q4	us-gaap	Inventory Net InventoryNet	58500000	USD
CY2012	us-gaap	Investment Tax Credit InvestmentTaxCredit	-2100000	USD
CY2014	us-gaap	Investment Tax Credit InvestmentTaxCredit	-900000	USD
CY2013	us-gaap	Investment Tax Credit InvestmentTaxCredit	-2000000	USD
CY2012	us-gaap	Investments In And Advances To Affiliates At Fair Value Period Increase Decrease InvestmentsInAndAdvancesToAffiliatesAtFairValuePeriodIncreaseDecrease	0	USD
CY2014	us-gaap	Investments In And Advances To Affiliates At Fair Value Period Increase Decrease InvestmentsInAndAdvancesToAffiliatesAtFairValuePeriodIncreaseDecrease	0	USD
CY2013	us-gaap	Investments In And Advances To Affiliates At Fair Value Period Increase Decrease InvestmentsInAndAdvancesToAffiliatesAtFairValuePeriodIncreaseDecrease	-2700000	USD
CY2013Q4	us-gaap	Liabilities Liabilities	6097600000	USD
CY2014Q4	us-gaap	Liabilities Liabilities	6283400000	USD
CY2013Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	9134700000	USD
CY2014Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	9527800000	USD
CY2013Q4	us-gaap	Liabilities Current LiabilitiesCurrent	1093800000	USD
CY2014Q4	us-gaap	Liabilities Current LiabilitiesCurrent	573300000	USD
CY2013Q4	us-gaap	Liabilities Other Than Longterm Debt Noncurrent LiabilitiesOtherThanLongtermDebtNoncurrent	2703700000	USD
CY2014Q4	us-gaap	Liabilities Other Than Longterm Debt Noncurrent LiabilitiesOtherThanLongtermDebtNoncurrent	2954800000	USD
CY2014Q2	us-gaap	Limited Liability Company Llc Or Limited Partnership Lp Members Or Limited Partners Ownership Interest LimitedLiabilityCompanyLLCOrLimitedPartnershipLPMembersOrLimitedPartnersOwnershipInterest	0.060
CY2014Q4	us-gaap	Line Of Credit LineOfCredit	100000000	USD
CY2014Q4	us-gaap	Line Of Credit Facility Maximum Borrowing Capacity LineOfCreditFacilityMaximumBorrowingCapacity	1150000000	USD
CY2013Q4	us-gaap	Long Term Debt LongTermDebt	2400100000	USD
CY2014Q4	us-gaap	Long Term Debt LongTermDebt	2755300000	USD
CY2013Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	100000000	USD
CY2014Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	0	USD
CY2014Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Next Twelve Months LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths	200000	USD
CY2014Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive	250100000	USD
CY2014Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Four LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour	250100000	USD
CY2014Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Three LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree	225100000	USD
CY2014Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Two LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo	110200000	USD
CY2013Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	2300100000	USD
CY2014Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	2755300000	USD
CY2012	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	143700000	USD
CY2014	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-163800000	USD
CY2013	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	338800000	USD
CY2012	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-1192600000	USD
CY2014	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-559100000	USD
CY2013	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-957000000	USD
CY2012	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	1046100000	USD
CY2014	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	721600000	USD
CY2013	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	623200000	USD
CY2012	us-gaap	Net Income Loss NetIncomeLoss	355000000	USD
CY2013Q1	us-gaap	Net Income Loss NetIncomeLoss	23100000	USD
CY2013Q2	us-gaap	Net Income Loss NetIncomeLoss	91700000	USD
CY2013Q3	us-gaap	Net Income Loss NetIncomeLoss	215200000	USD
CY2014Q1	us-gaap	Net Income Loss NetIncomeLoss	49300000	USD
CY2014Q3	us-gaap	Net Income Loss NetIncomeLoss	187300000	USD
CY2014	us-gaap	Net Income Loss NetIncomeLoss	395800000	USD
CY2013Q4	us-gaap	Net Income Loss NetIncomeLoss	57600000	USD
CY2013	us-gaap	Net Income Loss NetIncomeLoss	387600000	USD
CY2014Q2	us-gaap	Net Income Loss NetIncomeLoss	100800000	USD
CY2014Q4	us-gaap	Net Income Loss NetIncomeLoss	58400000	USD
CY2012	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	30000000	USD
CY2014	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	0	USD
CY2012	us-gaap	Noncontrolling Interest Decrease From Deconsolidation NoncontrollingInterestDecreaseFromDeconsolidation	0	USD
CY2014	us-gaap	Noncontrolling Interest Decrease From Deconsolidation NoncontrollingInterestDecreaseFromDeconsolidation	0	USD
CY2013	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	6200000	USD
CY2013	us-gaap	Noncontrolling Interest Decrease From Deconsolidation NoncontrollingInterestDecreaseFromDeconsolidation	6100000	USD
CY2012	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	7300000	USD
CY2014	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	180200000	USD
CY2013	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	118100000	USD
CY2012	us-gaap	Operating Expenses OperatingExpenses	1075600000	USD
CY2014	us-gaap	Operating Expenses OperatingExpenses	809700000	USD
CY2013	us-gaap	Operating Expenses OperatingExpenses	885300000	USD
CY2012	us-gaap	Operating Income Loss OperatingIncomeLoss	676900000	USD
CY2013Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	75400000	USD
CY2013Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	143900000	USD
CY2013Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	260900000	USD
CY2014Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	61800000	USD
CY2014Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	248100000	USD
CY2014	us-gaap	Operating Income Loss OperatingIncomeLoss	536800000	USD
CY2013Q4	us-gaap	Operating Income Loss OperatingIncomeLoss	73300000	USD
CY2013	us-gaap	Operating Income Loss OperatingIncomeLoss	553500000	USD
CY2014Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	141800000	USD
CY2014Q4	us-gaap	Operating Income Loss OperatingIncomeLoss	85100000	USD
CY2014Q4	us-gaap	Operating Leases Future Minimum Payments Due OperatingLeasesFutureMinimumPaymentsDue	95100000	USD
CY2014Q4	us-gaap	Operating Leases Future Minimum Payments Due Current OperatingLeasesFutureMinimumPaymentsDueCurrent	7400000	USD
CY2014Q4	us-gaap	Operating Leases Future Minimum Payments Due In Five Years OperatingLeasesFutureMinimumPaymentsDueInFiveYears	2400000	USD
CY2014Q4	us-gaap	Operating Leases Future Minimum Payments Due In Four Years OperatingLeasesFutureMinimumPaymentsDueInFourYears	3100000	USD
CY2014Q4	us-gaap	Operating Leases Future Minimum Payments Due In Three Years OperatingLeasesFutureMinimumPaymentsDueInThreeYears	4200000	USD
CY2014Q4	us-gaap	Operating Leases Future Minimum Payments Due In Two Years OperatingLeasesFutureMinimumPaymentsDueInTwoYears	31600000	USD
CY2014Q4	us-gaap	Operating Leases Future Minimum Payments Due Thereafter OperatingLeasesFutureMinimumPaymentsDueThereafter	46400000	USD
CY2012	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	14200000	USD
CY2014	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	6700000	USD
CY2013	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	8800000	USD
CY2013Q4	us-gaap	Other Assets Current OtherAssetsCurrent	34600000	USD
CY2014Q4	us-gaap	Other Assets Current OtherAssetsCurrent	37300000	USD
CY2013Q4	us-gaap	Other Assets Miscellaneous Noncurrent OtherAssetsMiscellaneousNoncurrent	28400000	USD
CY2014Q4	us-gaap	Other Assets Miscellaneous Noncurrent OtherAssetsMiscellaneousNoncurrent	42300000	USD
CY2013Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	407500000	USD
CY2014Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	453800000	USD
CY2012	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax	-10200000	USD
CY2014	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax	-11100000	USD
CY2013	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax	12400000	USD
CY2012	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax	-5600000	USD
CY2014	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax	-7000000	USD
CY2013	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax	7800000	USD
CY2012	us-gaap	Other Comprehensive Income Finalization Of Pension And Non Pension Postretirement Plan Valuation Tax OtherComprehensiveIncomeFinalizationOfPensionAndNonPensionPostretirementPlanValuationTax	0	USD
CY2014	us-gaap	Other Comprehensive Income Finalization Of Pension And Non Pension Postretirement Plan Valuation Tax OtherComprehensiveIncomeFinalizationOfPensionAndNonPensionPostretirementPlanValuationTax	-100000	USD
CY2013	us-gaap	Other Comprehensive Income Finalization Of Pension And Non Pension Postretirement Plan Valuation Tax OtherComprehensiveIncomeFinalizationOfPensionAndNonPensionPostretirementPlanValuationTax	1900000	USD
CY2012	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Net Of Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax	200000	USD
CY2014	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Net Of Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax	0	USD
CY2013	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Net Of Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax	0	USD
CY2012	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditTax	200000	USD
CY2014	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditTax	0	USD
CY2013	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditTax	0	USD
CY2014	us-gaap	Other Comprehensive Income Loss Before Reclassifications Net Of Tax OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax	-14200000	USD
CY2012	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	400000	USD
CY2014	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	0	USD
CY2013	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	0	USD
CY2012	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesTax	100000	USD
CY2014	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesTax	0	USD
CY2013	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesTax	0	USD
CY2012	us-gaap	Other Comprehensive Income Loss Finalization Of Pension And Non Pension Postretirement Plan Valuation Net Of Tax OtherComprehensiveIncomeLossFinalizationOfPensionAndNonPensionPostretirementPlanValuationNetOfTax	0	USD
CY2014	us-gaap	Other Comprehensive Income Loss Finalization Of Pension And Non Pension Postretirement Plan Valuation Net Of Tax OtherComprehensiveIncomeLossFinalizationOfPensionAndNonPensionPostretirementPlanValuationNetOfTax	-100000	USD
CY2013	us-gaap	Other Comprehensive Income Loss Finalization Of Pension And Non Pension Postretirement Plan Valuation Net Of Tax OtherComprehensiveIncomeLossFinalizationOfPensionAndNonPensionPostretirementPlanValuationNetOfTax	3000000	USD
CY2012	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-12000000	USD
CY2014	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-13200000	USD
CY2013	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	27100000	USD
CY2014	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-13200000	USD
CY2012	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax	3600000	USD
CY2014	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax	0	USD
CY2013	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax	-600000	USD
CY2012	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesTax	-1600000	USD
CY2014	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesTax	0	USD
CY2013	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesTax	400000	USD
CY2012	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax	-3000000	USD
CY2014	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax	-1800000	USD
CY2013	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax	-3700000	USD
CY2012	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossTax	1700000	USD
CY2014	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossTax	1200000	USD
CY2013	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossTax	2400000	USD
CY2012	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Transition Asset Obligation Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetTransitionAssetObligationNetOfTax	-100000	USD
CY2014	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Transition Asset Obligation Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetTransitionAssetObligationNetOfTax	0	USD
CY2013	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Transition Asset Obligation Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetTransitionAssetObligationNetOfTax	0	USD
CY2012	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Transition Asset Obligation Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetTransitionAssetObligationTax	100000	USD
CY2014	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Transition Asset Obligation Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetTransitionAssetObligationTax	0	USD
CY2013	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Transition Asset Obligation Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetTransitionAssetObligationTax	0	USD
CY2012	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	601500000	USD
CY2014	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	439600000	USD
CY2013	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	489200000	USD
CY2013Q4	us-gaap	Other Inventory Supplies OtherInventorySupplies	80700000	USD
CY2014Q4	us-gaap	Other Inventory Supplies OtherInventorySupplies	78900000	USD
CY2013Q4	us-gaap	Other Investments OtherInvestments	1359800000	USD
CY2014Q4	us-gaap	Other Investments OtherInvestments	1388300000	USD
CY2013Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	47400000	USD
CY2014Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	51700000	USD
CY2013Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	102700000	USD
CY2013	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	16200000	USD
CY2014Q2	us-gaap	Partners Capital Account Units Acquisitions PartnersCapitalAccountUnitsAcquisitions	6322457	shares
CY2012	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	3400000	USD
CY2014	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	0	USD
CY2013	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	0	USD
CY2014	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	184100000	USD
CY2013	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	165500000	USD
CY2012	us-gaap	Payments Of Dividends Minority Interest PaymentsOfDividendsMinorityInterest	12600000	USD
CY2014	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	199900000	shares
CY2014Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	108000000	USD
CY2014	us-gaap	Payments Of Dividends Minority Interest PaymentsOfDividendsMinorityInterest	0	USD
CY2013	us-gaap	Payments Of Dividends Minority Interest PaymentsOfDividendsMinorityInterest	2500000	USD
CY2013Q4	us-gaap	Other Long Term Investments OtherLongTermInvestments	61000000	USD
CY2014Q4	us-gaap	Other Long Term Investments OtherLongTermInvestments	70100000	USD
CY2012	us-gaap	Other Nonoperating Expense OtherNonoperatingExpense	16500000	USD
CY2014	us-gaap	Other Nonoperating Expense OtherNonoperatingExpense	14400000	USD
CY2013	us-gaap	Other Nonoperating Expense OtherNonoperatingExpense	22200000	USD
CY2012	us-gaap	Other Nonoperating Income OtherNonoperatingIncome	17600000	USD
CY2014	us-gaap	Other Nonoperating Income OtherNonoperatingIncome	17800000	USD
CY2013	us-gaap	Other Nonoperating Income OtherNonoperatingIncome	31800000	USD
CY2012	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	78600000	USD
CY2014	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	0	USD
CY2013	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	0	USD
CY2012	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	1150600000	USD
CY2014	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	569300000	USD
CY2013	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	990600000	USD
CY2013Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent	241500000	USD
CY2014Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent	315500000	USD
CY2013Q4	us-gaap	Postemployment Benefits Liability Current And Noncurrent PostemploymentBenefitsLiabilityCurrentAndNoncurrent	1600000	USD
CY2014Q4	us-gaap	Postemployment Benefits Liability Current And Noncurrent PostemploymentBenefitsLiabilityCurrentAndNoncurrent	1200000	USD
CY2012	us-gaap	Proceeds From Contribution In Aid Of Construction ProceedsFromContributionInAidOfConstruction	27500000	USD
CY2014	us-gaap	Proceeds From Contribution In Aid Of Construction ProceedsFromContributionInAidOfConstruction	0	USD
CY2013	us-gaap	Proceeds From Contribution In Aid Of Construction ProceedsFromContributionInAidOfConstruction	0	USD
CY2012	us-gaap	Proceeds From Equity Method Investment Dividends Or Distributions Return Of Capital ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital	0	USD
CY2014	us-gaap	Proceeds From Equity Method Investment Dividends Or Distributions Return Of Capital ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital	9500000	USD
CY2013	us-gaap	Proceeds From Equity Method Investment Dividends Or Distributions Return Of Capital ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital	0	USD
CY2012	us-gaap	Proceeds From Insurance Settlement Investing Activities ProceedsFromInsuranceSettlementInvestingActivities	7600000	USD
CY2014	us-gaap	Proceeds From Insurance Settlement Investing Activities ProceedsFromInsuranceSettlementInvestingActivities	0	USD
CY2013	us-gaap	Proceeds From Insurance Settlement Investing Activities ProceedsFromInsuranceSettlementInvestingActivities	0	USD
CY2012	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	14300000	USD
CY2014	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	13200000	USD
CY2013	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	14200000	USD
CY2012	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	250000000	USD
CY2014	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	588900000	USD
CY2013	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	247400000	USD
CY2012	us-gaap	Proceeds From Minority Shareholders ProceedsFromMinorityShareholders	46200000	USD
CY2014	us-gaap	Proceeds From Minority Shareholders ProceedsFromMinorityShareholders	0	USD
CY2013	us-gaap	Proceeds From Minority Shareholders ProceedsFromMinorityShareholders	107000000	USD
CY2012	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	153800000	USD
CY2014	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	-341600000	USD
CY2013	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	8700000	USD
CY2012	us-gaap	Proceeds From Sale Of Productive Assets ProceedsFromSaleOfProductiveAssets	1500000	USD
CY2014	us-gaap	Proceeds From Sale Of Productive Assets ProceedsFromSaleOfProductiveAssets	700000	USD
CY2013	us-gaap	Proceeds From Sale Of Productive Assets ProceedsFromSaleOfProductiveAssets	36300000	USD
CY2012	us-gaap	Profit Loss ProfitLoss	385000000	USD
CY2013Q1	us-gaap	Profit Loss ProfitLoss	28000000	USD
CY2013Q2	us-gaap	Profit Loss ProfitLoss	93000000	USD
CY2013Q3	us-gaap	Profit Loss ProfitLoss	215200000	USD
CY2014Q1	us-gaap	Profit Loss ProfitLoss	49300000	USD
CY2014Q3	us-gaap	Profit Loss ProfitLoss	187300000	USD
CY2014	us-gaap	Profit Loss ProfitLoss	395800000	USD
CY2013Q4	us-gaap	Profit Loss ProfitLoss	57600000	USD
CY2013	us-gaap	Profit Loss ProfitLoss	393800000	USD
CY2014Q2	us-gaap	Profit Loss ProfitLoss	100800000	USD
CY2014Q4	us-gaap	Profit Loss ProfitLoss	58400000	USD
CY2013Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	9651600000	USD
CY2014Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	10098900000	USD
CY2013Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	6672800000	USD
CY2012	us-gaap	Public Utilities Allowance For Funds Used During Construction Additions PublicUtilitiesAllowanceForFundsUsedDuringConstructionAdditions	3500000	USD
CY2014	us-gaap	Public Utilities Allowance For Funds Used During Construction Additions PublicUtilitiesAllowanceForFundsUsedDuringConstructionAdditions	2400000	USD
CY2013	us-gaap	Public Utilities Allowance For Funds Used During Construction Additions PublicUtilitiesAllowanceForFundsUsedDuringConstructionAdditions	3400000	USD
CY2012	us-gaap	Public Utilities Allowance For Funds Used During Construction Capitalized Cost Of Equity PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity	6200000	USD
CY2014	us-gaap	Public Utilities Allowance For Funds Used During Construction Capitalized Cost Of Equity PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity	4200000	USD
CY2013	us-gaap	Public Utilities Allowance For Funds Used During Construction Capitalized Cost Of Equity PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity	6600000	USD
CY2012	us-gaap	Public Utilities Allowance For Funds Used During Construction Rate PublicUtilitiesAllowanceForFundsUsedDuringConstructionRate	0.0893
CY2014	us-gaap	Public Utilities Allowance For Funds Used During Construction Rate PublicUtilitiesAllowanceForFundsUsedDuringConstructionRate	0.0692
CY2013	us-gaap	Public Utilities Allowance For Funds Used During Construction Rate PublicUtilitiesAllowanceForFundsUsedDuringConstructionRate	0.0833
CY2013Q4	us-gaap	Public Utilities Property Plant And Equipment Plant In Service PublicUtilitiesPropertyPlantAndEquipmentPlantInService	9183100000	USD
CY2014Q4	us-gaap	Public Utilities Property Plant And Equipment Plant In Service PublicUtilitiesPropertyPlantAndEquipmentPlantInService	9983000000	USD
CY2014	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	1000000	USD
CY2013Q4	us-gaap	Regulatory Assets Current RegulatoryAssetsCurrent	48800000	USD
CY2014Q4	us-gaap	Regulatory Assets Current RegulatoryAssetsCurrent	97100000	USD
CY2013Q4	us-gaap	Regulatory Assets Noncurrent RegulatoryAssetsNoncurrent	379100000	USD
CY2014Q4	us-gaap	Regulatory Assets Noncurrent RegulatoryAssetsNoncurrent	411500000	USD
CY2013Q4	us-gaap	Regulatory Liability Current RegulatoryLiabilityCurrent	20200000	USD
CY2014Q4	us-gaap	Regulatory Liability Current RegulatoryLiabilityCurrent	24400000	USD
CY2013Q4	us-gaap	Regulatory Liability Noncurrent RegulatoryLiabilityNoncurrent	234200000	USD
CY2014Q4	us-gaap	Regulatory Liability Noncurrent RegulatoryLiabilityNoncurrent	263000000	USD
CY2012	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	100000	USD
CY2014	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	240200000	USD
CY2013	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	100000	USD
CY2012	us-gaap	Repayments Of Long Term Lines Of Credit RepaymentsOfLongTermLinesOfCredit	150000000	USD
CY2014	us-gaap	Repayments Of Long Term Lines Of Credit RepaymentsOfLongTermLinesOfCredit	0	USD
CY2013	us-gaap	Repayments Of Long Term Lines Of Credit RepaymentsOfLongTermLinesOfCredit	0	USD
CY2013Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	1991700000	USD
CY2014Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	2198200000	USD
CY2012	us-gaap	Revenues Revenues	3671200000	USD
CY2013Q1	us-gaap	Revenues Revenues	901400000	USD
CY2013Q2	us-gaap	Revenues Revenues	734200000	USD
CY2013Q3	us-gaap	Revenues Revenues	723200000	USD
CY2014Q1	us-gaap	Revenues Revenues	560400000	USD
CY2014Q3	us-gaap	Revenues Revenues	754700000	USD
CY2014	us-gaap	Revenues Revenues	2453100000	USD
CY2013Q4	us-gaap	Revenues Revenues	508900000	USD
CY2013	us-gaap	Revenues Revenues	2867700000	USD
CY2014Q2	us-gaap	Revenues Revenues	611800000	USD
CY2014Q4	us-gaap	Revenues Revenues	526200000	USD
CY2012	us-gaap	Share Based Compensation ShareBasedCompensation	-2600000	USD
CY2014	us-gaap	Share Based Compensation ShareBasedCompensation	-2700000	USD
CY2013	us-gaap	Share Based Compensation ShareBasedCompensation	-3500000	USD
CY2014Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Authorized ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized	7400000	shares
CY2012	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	2000000	USD
CY2013	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	1400000	USD
CY2014Q4	us-gaap	Short Term Debt Weighted Average Interest Rate ShortTermDebtWeightedAverageInterestRate	0.0042
CY2013Q4	us-gaap	Short Term Borrowings ShortTermBorrowings	439600000	USD
CY2014Q4	us-gaap	Short Term Borrowings ShortTermBorrowings	98000000	USD
CY2012	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	14300000	USD
CY2014	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	13200000	USD
CY2013	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	14200000	USD
CY2011Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	2819300000	USD
CY2012Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	3072400000	USD
CY2013Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	3037100000	USD
CY2014Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	3244400000	USD
CY2012	us-gaap	Taxes Excluding Income And Excise Taxes TaxesExcludingIncomeAndExciseTaxes	110200000	USD
CY2014	us-gaap	Taxes Excluding Income And Excise Taxes TaxesExcludingIncomeAndExciseTaxes	88700000	USD
CY2013	us-gaap	Taxes Excluding Income And Excise Taxes TaxesExcludingIncomeAndExciseTaxes	98800000	USD
CY2013Q4	us-gaap	Taxes Payable Current TaxesPayableCurrent	39900000	USD
CY2014Q4	us-gaap	Taxes Payable Current TaxesPayableCurrent	39700000	USD
CY2013Q4	us-gaap	Unbilled Receivables Current UnbilledReceivablesCurrent	58700000	USD
CY2014Q4	us-gaap	Unbilled Receivables Current UnbilledReceivablesCurrent	55500000	USD
CY2011Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	0	USD
CY2012Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	0	USD
CY2013Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	7800000	USD
CY2014Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	10500000	USD
CY2014Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	0	USD
CY2012	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	0	USD
CY2014	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	2700000	USD
CY2013	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	2700000	USD
CY2012	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	0	USD
CY2014	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	0	USD
CY2013	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	5100000	USD
CY2014	us-gaap	Unrecognized Tax Benefits Period Increase Decrease UnrecognizedTaxBenefitsPeriodIncreaseDecrease	2700000	USD
CY2014Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	10500000	USD
CY2014Q4	us-gaap	Unrecorded Unconditional Purchase Obligation Balance On Fifth Anniversary UnrecordedUnconditionalPurchaseObligationBalanceOnFifthAnniversary	245500000	USD
CY2014Q4	us-gaap	Unrecorded Unconditional Purchase Obligation Balance On First Anniversary UnrecordedUnconditionalPurchaseObligationBalanceOnFirstAnniversary	676300000	USD
CY2014Q4	us-gaap	Unrecorded Unconditional Purchase Obligation Balance On Fourth Anniversary UnrecordedUnconditionalPurchaseObligationBalanceOnFourthAnniversary	296100000	USD
CY2014Q4	us-gaap	Unrecorded Unconditional Purchase Obligation Balance On Second Anniversary UnrecordedUnconditionalPurchaseObligationBalanceOnSecondAnniversary	608400000	USD
CY2014Q4	us-gaap	Unrecorded Unconditional Purchase Obligation Balance On Third Anniversary UnrecordedUnconditionalPurchaseObligationBalanceOnThirdAnniversary	386100000	USD
CY2014Q4	us-gaap	Unrecorded Unconditional Purchase Obligation Balance Sheet Amount UnrecordedUnconditionalPurchaseObligationBalanceSheetAmount	2212400000	USD
CY2012	us-gaap	Utilities Operating Expense Purchased Power Under Long Term Contracts UtilitiesOperatingExpensePurchasedPowerUnderLongTermContracts	49500000	USD
CY2014	us-gaap	Utilities Operating Expense Purchased Power Under Long Term Contracts UtilitiesOperatingExpensePurchasedPowerUnderLongTermContracts	60800000	USD
CY2013	us-gaap	Utilities Operating Expense Purchased Power Under Long Term Contracts UtilitiesOperatingExpensePurchasedPowerUnderLongTermContracts	62000000	USD
CY2011Q4	us-gaap	Valuation Allowances And Reserves Balance ValuationAllowancesAndReservesBalance	3800000	USD
CY2012Q4	us-gaap	Valuation Allowances And Reserves Balance ValuationAllowancesAndReservesBalance	2600000	USD
CY2013Q4	us-gaap	Valuation Allowances And Reserves Balance ValuationAllowancesAndReservesBalance	1900000	USD
CY2014Q4	us-gaap	Valuation Allowances And Reserves Balance ValuationAllowancesAndReservesBalance	1600000	USD
CY2012	us-gaap	Valuation Allowances And Reserves Charged To Cost And Expense ValuationAllowancesAndReservesChargedToCostAndExpense	3300000	USD
CY2014	us-gaap	Valuation Allowances And Reserves Charged To Cost And Expense ValuationAllowancesAndReservesChargedToCostAndExpense	2300000	USD
CY2013	us-gaap	Valuation Allowances And Reserves Charged To Cost And Expense ValuationAllowancesAndReservesChargedToCostAndExpense	2500000	USD
CY2012	us-gaap	Valuation Allowances And Reserves Deductions ValuationAllowancesAndReservesDeductions	4500000	USD
CY2014	us-gaap	Valuation Allowances And Reserves Deductions ValuationAllowancesAndReservesDeductions	2600000	USD
CY2013	us-gaap	Valuation Allowances And Reserves Deductions ValuationAllowancesAndReservesDeductions	3200000	USD
CY2012	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	198100000	shares
CY2013	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	199400000	shares
CY2012	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	197100000	shares
CY2014	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	199200000	shares
CY2013	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	198200000	shares
CY2014	us-gaap	Use Of Estimates UseOfEstimates	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;text-align:justify;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;color:#000000;font-weight:bold;text-decoration:none;">Use of Estimates</font><font style="font-family:inherit;font-size:10pt;font-weight:bold;"> </font></div><div style="line-height:120%;text-align:justify;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div><div style="line-height:120%;text-align:justify;text-indent:48px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;color:#000000;text-decoration:none;">In preparing the</font><font style="font-family:inherit;font-size:10pt;"> </font><font style="font-family:inherit;font-size:10pt;color:#000000;text-decoration:none;">Consolidated</font><font style="font-family:inherit;font-size:10pt;"> </font><font style="font-family:inherit;font-size:10pt;color:#000000;text-decoration:none;">Financial Statements, management is required to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and contingent liabilities at the date of the</font><font style="font-family:inherit;font-size:10pt;"> </font><font style="font-family:inherit;font-size:10pt;color:#000000;text-decoration:none;">Consolidated</font><font style="font-family:inherit;font-size:10pt;"> </font><font style="font-family:inherit;font-size:10pt;color:#000000;text-decoration:none;">Financial Statements and the reported amounts of revenues and expenses during the reporting period.  Changes to these assumptions and estimates could have a material effect on</font><font style="font-family:inherit;font-size:10pt;"> </font><font style="font-family:inherit;font-size:10pt;color:#000000;text-decoration:none;">the Company's Consolidated</font><font style="font-family:inherit;font-size:10pt;"> </font><font style="font-family:inherit;font-size:10pt;color:#000000;text-decoration:none;">Financial Statements.  However,</font><font style="font-family:inherit;font-size:10pt;"> </font><font style="font-family:inherit;font-size:10pt;color:#000000;text-decoration:none;">the Company</font><font style="font-family:inherit;font-size:10pt;"> </font><font style="font-family:inherit;font-size:10pt;color:#000000;text-decoration:none;">believes it has taken reasonable positions where assumptions and estimates are used in order to minimize the negative financial impact to</font><font style="font-family:inherit;font-size:10pt;"> </font><font style="font-family:inherit;font-size:10pt;color:#000000;text-decoration:none;">the Company</font><font style="font-family:inherit;font-size:10pt;"> </font><font style="font-family:inherit;font-size:10pt;color:#000000;text-decoration:none;">that could result if actual results vary from the assumptions and estimates.  In management's opinion, the areas of</font><font style="font-family:inherit;font-size:10pt;"> </font><font style="font-family:inherit;font-size:10pt;color:#000000;text-decoration:none;">the Company</font><font style="font-family:inherit;font-size:10pt;"> </font><font style="font-family:inherit;font-size:10pt;color:#000000;text-decoration:none;">where the most significant judgment is exercised</font><font style="font-family:inherit;font-size:10pt;"> </font><font style="font-family:inherit;font-size:10pt;color:#000000;text-decoration:none;">for all Company segments</font><font style="font-family:inherit;font-size:10pt;"> </font><font style="font-family:inherit;font-size:10pt;color:#000000;text-decoration:none;">includes the determination of Pension Plan assumptions,</font><font style="font-family:inherit;font-size:10pt;"> </font><font style="font-family:inherit;font-size:10pt;color:#000000;text-decoration:none;">income taxes,</font><font style="font-family:inherit;font-size:10pt;"> </font><font style="font-family:inherit;font-size:10pt;color:#000000;text-decoration:none;">contingency reserves, asset retirement obligations</font><font style="font-family:inherit;font-size:10pt;"> </font><font style="font-family:inherit;font-size:10pt;color:#000000;text-decoration:none;">and depreciable lives of property, plant and equipment</font><font style="font-family:inherit;font-size:10pt;">. </font><font style="font-family:inherit;font-size:10pt;color:#000000;text-decoration:none;">For the electric utility segment, the most significant judgment is also exercised in</font><font style="font-family:inherit;font-size:10pt;"> </font><font style="font-family:inherit;font-size:10pt;color:#000000;text-decoration:none;">the existence of regulatory assets and liabilities and unbilled revenues</font><font style="font-family:inherit;font-size:10pt;">. </font></div></div>

Files In Submission

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0001021635-15-000020-index.html	Edgar Link	pending
0001021635-15-000020.txt	Edgar Link	pending
0001021635-15-000020-xbrl.zip	Edgar Link	pending
a2014oge10-k.htm	Edgar Link	pending
a2014oge10-kxex1033.htm	Edgar Link	pending
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FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xls	Edgar Link	pending
Financial_Report.xlsx	Edgar Link	pending
oge-20141231.xml	Edgar Link	completed
oge-20141231.xsd	Edgar Link	pending
oge-20141231_cal.xml	Edgar Link	unprocessable
oge-20141231_def.xml	Edgar Link	unprocessable
oge-20141231_lab.xml	Edgar Link	unprocessable
oge-20141231_pre.xml	Edgar Link	unprocessable
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$OGE
OGE Energy Corp Stock $oge

2014 Q4 Form 10-K Financial Statement

#000102163515000020 Filed on February 26, 2015

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$OGE OGE Energy Corp Stock $oge

2014 Q4 Form 10-K Financial Statement

#000102163515000020 Filed on February 26, 2015

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$OGE
OGE Energy Corp Stock $oge