|
Segment and Significant Customer Information (Details) (USD $) In Millions, unless otherwise specified
|
3 Months Ended |
12 Months Ended |
|
Dec. 31, 2014
|
Sep. 30, 2014
|
Jun. 30, 2014
|
Mar. 31, 2014
|
Dec. 31, 2013
|
Sep. 30, 2013
|
Jun. 30, 2013
|
Mar. 31, 2013
|
Dec. 31, 2014
|
Dec. 31, 2013
|
Dec. 31, 2012
|
| Revenues from External Customers and Long-Lived Assets [Line Items] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Operating revenues |
$ 1,939us-gaap_Revenues |
$ 2,187us-gaap_Revenues |
$ 1,939us-gaap_Revenues |
$ 1,965us-gaap_Revenues |
$ 1,438us-gaap_Revenues |
$ 2,050us-gaap_Revenues |
$ 1,572us-gaap_Revenues |
$ 1,241us-gaap_Revenues |
$ 8,030us-gaap_Revenues |
|
$ 6,301us-gaap_Revenues |
|
$ 5,478us-gaap_Revenues |
|
| Commodity Margin |
|
|
|
|
|
|
|
|
2,759cpn_CommodityMargin |
[1] |
2,568cpn_CommodityMargin |
[1] |
2,538cpn_CommodityMargin |
[1],[2],[3] |
| Mark-to-Market Commodity Activity, Net and Other Revenue |
|
|
|
|
|
|
|
|
379cpn_MarkToMarketCommodityActivityNetAndOtherRevenue |
[4] |
(3)cpn_MarkToMarketCommodityActivityNetAndOtherRevenue |
[4] |
(84)cpn_MarkToMarketCommodityActivityNetAndOtherRevenue |
[4] |
| Plant operating expense |
|
|
|
|
|
|
|
|
969us-gaap_OperatingCostsAndExpenses |
|
895us-gaap_OperatingCostsAndExpenses |
|
922us-gaap_OperatingCostsAndExpenses |
|
| Depreciation and amortization expense |
|
|
|
|
|
|
|
|
603us-gaap_DepreciationAndAmortization |
|
593us-gaap_DepreciationAndAmortization |
|
562us-gaap_DepreciationAndAmortization |
|
| Sales, general and other administrative expense |
|
|
|
|
|
|
|
|
144us-gaap_SellingGeneralAndAdministrativeExpense |
|
136us-gaap_SellingGeneralAndAdministrativeExpense |
|
140us-gaap_SellingGeneralAndAdministrativeExpense |
|
| Other Cost and Expense, Operating |
|
|
|
|
|
|
|
|
88us-gaap_OtherCostAndExpenseOperating |
|
81us-gaap_OtherCostAndExpenseOperating |
|
78us-gaap_OtherCostAndExpenseOperating |
|
| Impairment losses |
|
|
|
|
|
|
|
|
123us-gaap_AssetImpairmentCharges |
|
16us-gaap_AssetImpairmentCharges |
|
0us-gaap_AssetImpairmentCharges |
|
| Gain (Loss) on Disposition of Assets |
|
|
|
|
|
|
|
|
(753)us-gaap_GainLossOnDispositionOfAssets1 |
|
0us-gaap_GainLossOnDispositionOfAssets1 |
|
(222)us-gaap_GainLossOnDispositionOfAssets1 |
|
| (Income) from unconsolidated investments in power plants |
|
|
|
|
|
|
|
|
(25)us-gaap_IncomeLossFromEquityMethodInvestments |
|
(30)us-gaap_IncomeLossFromEquityMethodInvestments |
|
(28)us-gaap_IncomeLossFromEquityMethodInvestments |
|
| Income from operations |
390us-gaap_OperatingIncomeLoss |
1,126us-gaap_OperatingIncomeLoss |
329us-gaap_OperatingIncomeLoss |
144us-gaap_OperatingIncomeLoss |
151us-gaap_OperatingIncomeLoss |
597us-gaap_OperatingIncomeLoss |
122us-gaap_OperatingIncomeLoss |
4us-gaap_OperatingIncomeLoss |
1,989us-gaap_OperatingIncomeLoss |
|
874us-gaap_OperatingIncomeLoss |
|
1,002us-gaap_OperatingIncomeLoss |
|
| Interest expense, net of interest income |
|
|
|
|
|
|
|
|
639us-gaap_InterestRevenueExpenseNet |
|
690us-gaap_InterestRevenueExpenseNet |
|
725us-gaap_InterestRevenueExpenseNet |
|
| Loss on interest rate derivatives |
|
|
|
|
|
|
|
|
0us-gaap_GainLossOnInterestRateDerivativeInstrumentsNotDesignatedAsHedgingInstruments |
|
0us-gaap_GainLossOnInterestRateDerivativeInstrumentsNotDesignatedAsHedgingInstruments |
|
14us-gaap_GainLossOnInterestRateDerivativeInstrumentsNotDesignatedAsHedgingInstruments |
|
| Debt Extinguishment Costs and Other (Income) Expense, Net |
|
|
|
|
|
|
|
|
367cpn_DebtExtinguishmentCostsAndOtherIncomeExpenseNet |
|
164cpn_DebtExtinguishmentCostsAndOtherIncomeExpenseNet |
|
45cpn_DebtExtinguishmentCostsAndOtherIncomeExpenseNet |
|
| Income before income taxes |
|
|
|
|
|
|
|
|
983cpn_IncomeLossBeforeReorganizationItemsIncomeTaxesAndDiscontinuedOperations |
|
20cpn_IncomeLossBeforeReorganizationItemsIncomeTaxesAndDiscontinuedOperations |
|
218cpn_IncomeLossBeforeReorganizationItemsIncomeTaxesAndDiscontinuedOperations |
|
| Commodity Margin for Six Southeast Power Plants Sold |
|
|
|
|
|
|
|
|
81cpn_CommodityMarginforSixSoutheastPowerPlantsSold |
|
152cpn_CommodityMarginforSixSoutheastPowerPlantsSold |
|
131cpn_CommodityMarginforSixSoutheastPowerPlantsSold |
|
| Lease levelization |
|
|
|
|
|
|
|
|
(5)cpn_LeaseLevelization |
|
6cpn_LeaseLevelization |
|
1cpn_LeaseLevelization |
|
| Contract amortization |
|
|
|
|
|
|
|
|
14cpn_ContractAmortization |
|
14cpn_ContractAmortization |
|
14cpn_ContractAmortization |
|
| Commodity Margin Broad River Energy Center |
|
|
|
|
|
|
|
|
|
|
|
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52cpn_CommodityMarginBroadRiverEnergyCenter |
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| Commodity Margin Riverside Energy Center |
|
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|
|
|
|
|
|
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|
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73cpn_CommodityMarginRiversideEnergyCenter |
|
| Number of significant customers |
|
|
|
|
|
|
|
|
one |
|
two |
|
|
|
| West [Member] |
|
|
|
|
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|
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|
|
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| Revenues from External Customers and Long-Lived Assets [Line Items] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Operating revenues |
|
|
|
|
|
|
|
|
2,358us-gaap_Revenues / us-gaap_StatementGeographicalAxis = cpn_WestMember |
|
1,942us-gaap_Revenues / us-gaap_StatementGeographicalAxis = cpn_WestMember |
|
1,678us-gaap_Revenues / us-gaap_StatementGeographicalAxis = cpn_WestMember |
|
| Commodity Margin |
|
|
|
|
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|
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|
1,050cpn_CommodityMargin / us-gaap_StatementGeographicalAxis = cpn_WestMember |
[1] |
1,020cpn_CommodityMargin / us-gaap_StatementGeographicalAxis = cpn_WestMember |
[1] |
994cpn_CommodityMargin / us-gaap_StatementGeographicalAxis = cpn_WestMember |
[1],[2],[3] |
| Mark-to-Market Commodity Activity, Net and Other Revenue |
|
|
|
|
|
|
|
|
220cpn_MarkToMarketCommodityActivityNetAndOtherRevenue / us-gaap_StatementGeographicalAxis = cpn_WestMember |
[4] |
(50)cpn_MarkToMarketCommodityActivityNetAndOtherRevenue / us-gaap_StatementGeographicalAxis = cpn_WestMember |
[4] |
(93)cpn_MarkToMarketCommodityActivityNetAndOtherRevenue / us-gaap_StatementGeographicalAxis = cpn_WestMember |
[4] |
| Plant operating expense |
|
|
|
|
|
|
|
|
385us-gaap_OperatingCostsAndExpenses / us-gaap_StatementGeographicalAxis = cpn_WestMember |
|
365us-gaap_OperatingCostsAndExpenses / us-gaap_StatementGeographicalAxis = cpn_WestMember |
|
368us-gaap_OperatingCostsAndExpenses / us-gaap_StatementGeographicalAxis = cpn_WestMember |
|
| Depreciation and amortization expense |
|
|
|
|
|
|
|
|
245us-gaap_DepreciationAndAmortization / us-gaap_StatementGeographicalAxis = cpn_WestMember |
|
227us-gaap_DepreciationAndAmortization / us-gaap_StatementGeographicalAxis = cpn_WestMember |
|
203us-gaap_DepreciationAndAmortization / us-gaap_StatementGeographicalAxis = cpn_WestMember |
|
| Sales, general and other administrative expense |
|
|
|
|
|
|
|
|
41us-gaap_SellingGeneralAndAdministrativeExpense / us-gaap_StatementGeographicalAxis = cpn_WestMember |
|
37us-gaap_SellingGeneralAndAdministrativeExpense / us-gaap_StatementGeographicalAxis = cpn_WestMember |
|
36us-gaap_SellingGeneralAndAdministrativeExpense / us-gaap_StatementGeographicalAxis = cpn_WestMember |
|
| Other Cost and Expense, Operating |
|
|
|
|
|
|
|
|
50us-gaap_OtherCostAndExpenseOperating / us-gaap_StatementGeographicalAxis = cpn_WestMember |
|
45us-gaap_OtherCostAndExpenseOperating / us-gaap_StatementGeographicalAxis = cpn_WestMember |
|
42us-gaap_OtherCostAndExpenseOperating / us-gaap_StatementGeographicalAxis = cpn_WestMember |
|
| Impairment losses |
|
|
|
|
|
|
|
|
0us-gaap_AssetImpairmentCharges / us-gaap_StatementGeographicalAxis = cpn_WestMember |
|
16us-gaap_AssetImpairmentCharges / us-gaap_StatementGeographicalAxis = cpn_WestMember |
|
|
|
| Gain (Loss) on Disposition of Assets |
|
|
|
|
|
|
|
|
0us-gaap_GainLossOnDispositionOfAssets1 / us-gaap_StatementGeographicalAxis = cpn_WestMember |
|
|
|
0us-gaap_GainLossOnDispositionOfAssets1 / us-gaap_StatementGeographicalAxis = cpn_WestMember |
|
| (Income) from unconsolidated investments in power plants |
|
|
|
|
|
|
|
|
0us-gaap_IncomeLossFromEquityMethodInvestments / us-gaap_StatementGeographicalAxis = cpn_WestMember |
|
0us-gaap_IncomeLossFromEquityMethodInvestments / us-gaap_StatementGeographicalAxis = cpn_WestMember |
|
0us-gaap_IncomeLossFromEquityMethodInvestments / us-gaap_StatementGeographicalAxis = cpn_WestMember |
|
| Income from operations |
|
|
|
|
|
|
|
|
549us-gaap_OperatingIncomeLoss / us-gaap_StatementGeographicalAxis = cpn_WestMember |
|
280us-gaap_OperatingIncomeLoss / us-gaap_StatementGeographicalAxis = cpn_WestMember |
|
252us-gaap_OperatingIncomeLoss / us-gaap_StatementGeographicalAxis = cpn_WestMember |
|
| Texas [Member] |
|
|
|
|
|
|
|
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| Revenues from External Customers and Long-Lived Assets [Line Items] |
|
|
|
|
|
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|
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|
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|
|
|
|
| Operating revenues |
|
|
|
|
|
|
|
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3,252us-gaap_Revenues / us-gaap_StatementGeographicalAxis = stpr_TX |
|
2,343us-gaap_Revenues / us-gaap_StatementGeographicalAxis = stpr_TX |
|
1,918us-gaap_Revenues / us-gaap_StatementGeographicalAxis = stpr_TX |
|
| Commodity Margin |
|
|
|
|
|
|
|
|
760cpn_CommodityMargin / us-gaap_StatementGeographicalAxis = stpr_TX |
[1] |
632cpn_CommodityMargin / us-gaap_StatementGeographicalAxis = stpr_TX |
[1] |
570cpn_CommodityMargin / us-gaap_StatementGeographicalAxis = stpr_TX |
[1],[2],[3] |
| Mark-to-Market Commodity Activity, Net and Other Revenue |
|
|
|
|
|
|
|
|
142cpn_MarkToMarketCommodityActivityNetAndOtherRevenue / us-gaap_StatementGeographicalAxis = stpr_TX |
[4] |
51cpn_MarkToMarketCommodityActivityNetAndOtherRevenue / us-gaap_StatementGeographicalAxis = stpr_TX |
[4] |
87cpn_MarkToMarketCommodityActivityNetAndOtherRevenue / us-gaap_StatementGeographicalAxis = stpr_TX |
[4] |
| Plant operating expense |
|
|
|
|
|
|
|
|
313us-gaap_OperatingCostsAndExpenses / us-gaap_StatementGeographicalAxis = stpr_TX |
|
269us-gaap_OperatingCostsAndExpenses / us-gaap_StatementGeographicalAxis = stpr_TX |
|
247us-gaap_OperatingCostsAndExpenses / us-gaap_StatementGeographicalAxis = stpr_TX |
|
| Depreciation and amortization expense |
|
|
|
|
|
|
|
|
191us-gaap_DepreciationAndAmortization / us-gaap_StatementGeographicalAxis = stpr_TX |
|
165us-gaap_DepreciationAndAmortization / us-gaap_StatementGeographicalAxis = stpr_TX |
|
142us-gaap_DepreciationAndAmortization / us-gaap_StatementGeographicalAxis = stpr_TX |
|
| Sales, general and other administrative expense |
|
|
|
|
|
|
|
|
64us-gaap_SellingGeneralAndAdministrativeExpense / us-gaap_StatementGeographicalAxis = stpr_TX |
|
56us-gaap_SellingGeneralAndAdministrativeExpense / us-gaap_StatementGeographicalAxis = stpr_TX |
|
47us-gaap_SellingGeneralAndAdministrativeExpense / us-gaap_StatementGeographicalAxis = stpr_TX |
|
| Other Cost and Expense, Operating |
|
|
|
|
|
|
|
|
5us-gaap_OtherCostAndExpenseOperating / us-gaap_StatementGeographicalAxis = stpr_TX |
|
3us-gaap_OtherCostAndExpenseOperating / us-gaap_StatementGeographicalAxis = stpr_TX |
|
5us-gaap_OtherCostAndExpenseOperating / us-gaap_StatementGeographicalAxis = stpr_TX |
|
| Impairment losses |
|
|
|
|
|
|
|
|
0us-gaap_AssetImpairmentCharges / us-gaap_StatementGeographicalAxis = stpr_TX |
|
0us-gaap_AssetImpairmentCharges / us-gaap_StatementGeographicalAxis = stpr_TX |
|
|
|
| Gain (Loss) on Disposition of Assets |
|
|
|
|
|
|
|
|
0us-gaap_GainLossOnDispositionOfAssets1 / us-gaap_StatementGeographicalAxis = stpr_TX |
|
|
|
0us-gaap_GainLossOnDispositionOfAssets1 / us-gaap_StatementGeographicalAxis = stpr_TX |
|
| (Income) from unconsolidated investments in power plants |
|
|
|
|
|
|
|
|
0us-gaap_IncomeLossFromEquityMethodInvestments / us-gaap_StatementGeographicalAxis = stpr_TX |
|
0us-gaap_IncomeLossFromEquityMethodInvestments / us-gaap_StatementGeographicalAxis = stpr_TX |
|
0us-gaap_IncomeLossFromEquityMethodInvestments / us-gaap_StatementGeographicalAxis = stpr_TX |
|
| Income from operations |
|
|
|
|
|
|
|
|
329us-gaap_OperatingIncomeLoss / us-gaap_StatementGeographicalAxis = stpr_TX |
|
190us-gaap_OperatingIncomeLoss / us-gaap_StatementGeographicalAxis = stpr_TX |
|
216us-gaap_OperatingIncomeLoss / us-gaap_StatementGeographicalAxis = stpr_TX |
|
| East [Member] |
|
|
|
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|
|
|
|
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|
|
|
|
| Revenues from External Customers and Long-Lived Assets [Line Items] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Operating revenues |
|
|
|
|
|
|
|
|
2,496us-gaap_Revenues / us-gaap_StatementGeographicalAxis = cpn_EastMember |
|
2,134us-gaap_Revenues / us-gaap_StatementGeographicalAxis = cpn_EastMember |
|
1,991us-gaap_Revenues / us-gaap_StatementGeographicalAxis = cpn_EastMember |
|
| Commodity Margin |
|
|
|
|
|
|
|
|
949cpn_CommodityMargin / us-gaap_StatementGeographicalAxis = cpn_EastMember |
[1] |
916cpn_CommodityMargin / us-gaap_StatementGeographicalAxis = cpn_EastMember |
[1] |
974cpn_CommodityMargin / us-gaap_StatementGeographicalAxis = cpn_EastMember |
[1],[2],[3] |
| Mark-to-Market Commodity Activity, Net and Other Revenue |
|
|
|
|
|
|
|
|
48cpn_MarkToMarketCommodityActivityNetAndOtherRevenue / us-gaap_StatementGeographicalAxis = cpn_EastMember |
[4] |
27cpn_MarkToMarketCommodityActivityNetAndOtherRevenue / us-gaap_StatementGeographicalAxis = cpn_EastMember |
[4] |
(47)cpn_MarkToMarketCommodityActivityNetAndOtherRevenue / us-gaap_StatementGeographicalAxis = cpn_EastMember |
[4] |
| Plant operating expense |
|
|
|
|
|
|
|
|
302us-gaap_OperatingCostsAndExpenses / us-gaap_StatementGeographicalAxis = cpn_EastMember |
|
292us-gaap_OperatingCostsAndExpenses / us-gaap_StatementGeographicalAxis = cpn_EastMember |
|
337us-gaap_OperatingCostsAndExpenses / us-gaap_StatementGeographicalAxis = cpn_EastMember |
|
| Depreciation and amortization expense |
|
|
|
|
|
|
|
|
168us-gaap_DepreciationAndAmortization / us-gaap_StatementGeographicalAxis = cpn_EastMember |
|
203us-gaap_DepreciationAndAmortization / us-gaap_StatementGeographicalAxis = cpn_EastMember |
|
219us-gaap_DepreciationAndAmortization / us-gaap_StatementGeographicalAxis = cpn_EastMember |
|
| Sales, general and other administrative expense |
|
|
|
|
|
|
|
|
39us-gaap_SellingGeneralAndAdministrativeExpense / us-gaap_StatementGeographicalAxis = cpn_EastMember |
|
42us-gaap_SellingGeneralAndAdministrativeExpense / us-gaap_StatementGeographicalAxis = cpn_EastMember |
|
57us-gaap_SellingGeneralAndAdministrativeExpense / us-gaap_StatementGeographicalAxis = cpn_EastMember |
|
| Other Cost and Expense, Operating |
|
|
|
|
|
|
|
|
32us-gaap_OtherCostAndExpenseOperating / us-gaap_StatementGeographicalAxis = cpn_EastMember |
|
33us-gaap_OtherCostAndExpenseOperating / us-gaap_StatementGeographicalAxis = cpn_EastMember |
|
34us-gaap_OtherCostAndExpenseOperating / us-gaap_StatementGeographicalAxis = cpn_EastMember |
|
| Impairment losses |
|
|
|
|
|
|
|
|
123us-gaap_AssetImpairmentCharges / us-gaap_StatementGeographicalAxis = cpn_EastMember |
|
0us-gaap_AssetImpairmentCharges / us-gaap_StatementGeographicalAxis = cpn_EastMember |
|
|
|
| Gain (Loss) on Disposition of Assets |
|
|
|
|
|
|
|
|
(753)us-gaap_GainLossOnDispositionOfAssets1 / us-gaap_StatementGeographicalAxis = cpn_EastMember |
|
|
|
(222)us-gaap_GainLossOnDispositionOfAssets1 / us-gaap_StatementGeographicalAxis = cpn_EastMember |
|
| (Income) from unconsolidated investments in power plants |
|
|
|
|
|
|
|
|
(25)us-gaap_IncomeLossFromEquityMethodInvestments / us-gaap_StatementGeographicalAxis = cpn_EastMember |
|
(30)us-gaap_IncomeLossFromEquityMethodInvestments / us-gaap_StatementGeographicalAxis = cpn_EastMember |
|
(28)us-gaap_IncomeLossFromEquityMethodInvestments / us-gaap_StatementGeographicalAxis = cpn_EastMember |
|
| Income from operations |
|
|
|
|
|
|
|
|
1,111us-gaap_OperatingIncomeLoss / us-gaap_StatementGeographicalAxis = cpn_EastMember |
|
403us-gaap_OperatingIncomeLoss / us-gaap_StatementGeographicalAxis = cpn_EastMember |
|
530us-gaap_OperatingIncomeLoss / us-gaap_StatementGeographicalAxis = cpn_EastMember |
|
| Geography Consolidation and Elimination [Member] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Revenues from External Customers and Long-Lived Assets [Line Items] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Operating revenues |
|
|
|
|
|
|
|
|
(76)us-gaap_Revenues / us-gaap_StatementGeographicalAxis = cpn_GeographyConsolidationandEliminationMember |
|
(118)us-gaap_Revenues / us-gaap_StatementGeographicalAxis = cpn_GeographyConsolidationandEliminationMember |
|
(109)us-gaap_Revenues / us-gaap_StatementGeographicalAxis = cpn_GeographyConsolidationandEliminationMember |
|
| Commodity Margin |
|
|
|
|
|
|
|
|
0cpn_CommodityMargin / us-gaap_StatementGeographicalAxis = cpn_GeographyConsolidationandEliminationMember |
|
0cpn_CommodityMargin / us-gaap_StatementGeographicalAxis = cpn_GeographyConsolidationandEliminationMember |
|
0cpn_CommodityMargin / us-gaap_StatementGeographicalAxis = cpn_GeographyConsolidationandEliminationMember |
|
| Mark-to-Market Commodity Activity, Net and Other Revenue |
|
|
|
|
|
|
|
|
(31)cpn_MarkToMarketCommodityActivityNetAndOtherRevenue / us-gaap_StatementGeographicalAxis = cpn_GeographyConsolidationandEliminationMember |
|
(31)cpn_MarkToMarketCommodityActivityNetAndOtherRevenue / us-gaap_StatementGeographicalAxis = cpn_GeographyConsolidationandEliminationMember |
|
(31)cpn_MarkToMarketCommodityActivityNetAndOtherRevenue / us-gaap_StatementGeographicalAxis = cpn_GeographyConsolidationandEliminationMember |
|
| Plant operating expense |
|
|
|
|
|
|
|
|
(31)us-gaap_OperatingCostsAndExpenses / us-gaap_StatementGeographicalAxis = cpn_GeographyConsolidationandEliminationMember |
|
(31)us-gaap_OperatingCostsAndExpenses / us-gaap_StatementGeographicalAxis = cpn_GeographyConsolidationandEliminationMember |
|
(30)us-gaap_OperatingCostsAndExpenses / us-gaap_StatementGeographicalAxis = cpn_GeographyConsolidationandEliminationMember |
|
| Depreciation and amortization expense |
|
|
|
|
|
|
|
|
(1)us-gaap_DepreciationAndAmortization / us-gaap_StatementGeographicalAxis = cpn_GeographyConsolidationandEliminationMember |
|
(2)us-gaap_DepreciationAndAmortization / us-gaap_StatementGeographicalAxis = cpn_GeographyConsolidationandEliminationMember |
|
(2)us-gaap_DepreciationAndAmortization / us-gaap_StatementGeographicalAxis = cpn_GeographyConsolidationandEliminationMember |
|
| Sales, general and other administrative expense |
|
|
|
|
|
|
|
|
0us-gaap_SellingGeneralAndAdministrativeExpense / us-gaap_StatementGeographicalAxis = cpn_GeographyConsolidationandEliminationMember |
|
1us-gaap_SellingGeneralAndAdministrativeExpense / us-gaap_StatementGeographicalAxis = cpn_GeographyConsolidationandEliminationMember |
|
0us-gaap_SellingGeneralAndAdministrativeExpense / us-gaap_StatementGeographicalAxis = cpn_GeographyConsolidationandEliminationMember |
|
| Other Cost and Expense, Operating |
|
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|
|
|
|
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|
1us-gaap_OtherCostAndExpenseOperating / us-gaap_StatementGeographicalAxis = cpn_GeographyConsolidationandEliminationMember |
|
0us-gaap_OtherCostAndExpenseOperating / us-gaap_StatementGeographicalAxis = cpn_GeographyConsolidationandEliminationMember |
|
(3)us-gaap_OtherCostAndExpenseOperating / us-gaap_StatementGeographicalAxis = cpn_GeographyConsolidationandEliminationMember |
|
| Impairment losses |
|
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|
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|
0us-gaap_AssetImpairmentCharges / us-gaap_StatementGeographicalAxis = cpn_GeographyConsolidationandEliminationMember |
|
0us-gaap_AssetImpairmentCharges / us-gaap_StatementGeographicalAxis = cpn_GeographyConsolidationandEliminationMember |
|
|
|
| Gain (Loss) on Disposition of Assets |
|
|
|
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|
0us-gaap_GainLossOnDispositionOfAssets1 / us-gaap_StatementGeographicalAxis = cpn_GeographyConsolidationandEliminationMember |
|
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|
0us-gaap_GainLossOnDispositionOfAssets1 / us-gaap_StatementGeographicalAxis = cpn_GeographyConsolidationandEliminationMember |
|
| (Income) from unconsolidated investments in power plants |
|
|
|
|
|
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|
0us-gaap_IncomeLossFromEquityMethodInvestments / us-gaap_StatementGeographicalAxis = cpn_GeographyConsolidationandEliminationMember |
|
0us-gaap_IncomeLossFromEquityMethodInvestments / us-gaap_StatementGeographicalAxis = cpn_GeographyConsolidationandEliminationMember |
|
0us-gaap_IncomeLossFromEquityMethodInvestments / us-gaap_StatementGeographicalAxis = cpn_GeographyConsolidationandEliminationMember |
|
| Income from operations |
|
|
|
|
|
|
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|
0us-gaap_OperatingIncomeLoss / us-gaap_StatementGeographicalAxis = cpn_GeographyConsolidationandEliminationMember |
|
1us-gaap_OperatingIncomeLoss / us-gaap_StatementGeographicalAxis = cpn_GeographyConsolidationandEliminationMember |
|
4us-gaap_OperatingIncomeLoss / us-gaap_StatementGeographicalAxis = cpn_GeographyConsolidationandEliminationMember |
|
| PJM Settlement, Inc. [Member] |
|
|
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|
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|
| Revenues from External Customers and Long-Lived Assets [Line Items] |
|
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|
|
|
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|
|
|
|
| Operating revenues |
|
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|
1,024us-gaap_Revenues / us-gaap_MajorCustomersAxis = cpn_PjmSettlementIncMember |
|
820us-gaap_Revenues / us-gaap_MajorCustomersAxis = cpn_PjmSettlementIncMember |
|
713us-gaap_Revenues / us-gaap_MajorCustomersAxis = cpn_PjmSettlementIncMember |
|
| Pacific Gas & Electric Company [Member] |
|
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|
|
|
|
|
|
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|
| Revenues from External Customers and Long-Lived Assets [Line Items] |
|
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|
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|
|
| Operating revenues |
|
|
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|
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|
694us-gaap_Revenues / us-gaap_MajorCustomersAxis = cpn_PacificGasElectricCompanyMember |
|
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|
| Operating Segments [Member] |
|
|
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|
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|
|
|
|
|
|
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|
| Revenues from External Customers and Long-Lived Assets [Line Items] |
|
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|
|
|
|
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|
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|
|
| Operating revenues |
|
|
|
|
|
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|
8,030us-gaap_Revenues / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember |
|
6,301us-gaap_Revenues / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember |
|
5,478us-gaap_Revenues / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember |
|
| Operating Segments [Member] | West [Member] |
|
|
|
|
|
|
|
|
|
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|
|
|
|
| Revenues from External Customers and Long-Lived Assets [Line Items] |
|
|
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|
|
|
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|
|
|
|
| Operating revenues |
|
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|
|
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|
2,352us-gaap_Revenues / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementGeographicalAxis = cpn_WestMember |
|
1,937us-gaap_Revenues / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementGeographicalAxis = cpn_WestMember |
|
1,668us-gaap_Revenues / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementGeographicalAxis = cpn_WestMember |
|
| Operating Segments [Member] | Texas [Member] |
|
|
|
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|
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|
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|
|
| Revenues from External Customers and Long-Lived Assets [Line Items] |
|
|
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|
|
|
|
|
|
|
|
|
| Operating revenues |
|
|
|
|
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|
3,229us-gaap_Revenues / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementGeographicalAxis = stpr_TX |
|
2,347us-gaap_Revenues / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementGeographicalAxis = stpr_TX |
|
1,857us-gaap_Revenues / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementGeographicalAxis = stpr_TX |
|
| Operating Segments [Member] | East [Member] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Revenues from External Customers and Long-Lived Assets [Line Items] |
|
|
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|
|
|
|
|
|
|
|
|
| Operating revenues |
|
|
|
|
|
|
|
|
2,449us-gaap_Revenues / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementGeographicalAxis = cpn_EastMember |
|
2,017us-gaap_Revenues / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementGeographicalAxis = cpn_EastMember |
|
1,953us-gaap_Revenues / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementGeographicalAxis = cpn_EastMember |
|
| Operating Segments [Member] | Geography Consolidation and Elimination [Member] |
|
|
|
|
|
|
|
|
|
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|
|
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|
| Revenues from External Customers and Long-Lived Assets [Line Items] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Operating revenues |
|
|
|
|
|
|
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|
0us-gaap_Revenues / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementGeographicalAxis = cpn_GeographyConsolidationandEliminationMember |
|
0us-gaap_Revenues / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementGeographicalAxis = cpn_GeographyConsolidationandEliminationMember |
|
0us-gaap_Revenues / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementGeographicalAxis = cpn_GeographyConsolidationandEliminationMember |
|
| Intersegment Eliminations [Member] |
|
|
|
|
|
|
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|
| Revenues from External Customers and Long-Lived Assets [Line Items] |
|
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|
|
|
|
| Operating revenues |
|
|
|
|
|
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|
|
0us-gaap_Revenues / us-gaap_ConsolidationItemsAxis = us-gaap_IntersegmentEliminationMember |
|
0us-gaap_Revenues / us-gaap_ConsolidationItemsAxis = us-gaap_IntersegmentEliminationMember |
|
0us-gaap_Revenues / us-gaap_ConsolidationItemsAxis = us-gaap_IntersegmentEliminationMember |
|
| Intersegment Eliminations [Member] | West [Member] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Revenues from External Customers and Long-Lived Assets [Line Items] |
|
|
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|
|
|
|
|
|
|
|
|
|
|
| Operating revenues |
|
|
|
|
|
|
|
|
6us-gaap_Revenues / us-gaap_ConsolidationItemsAxis = us-gaap_IntersegmentEliminationMember / us-gaap_StatementGeographicalAxis = cpn_WestMember |
|
5us-gaap_Revenues / us-gaap_ConsolidationItemsAxis = us-gaap_IntersegmentEliminationMember / us-gaap_StatementGeographicalAxis = cpn_WestMember |
|
10us-gaap_Revenues / us-gaap_ConsolidationItemsAxis = us-gaap_IntersegmentEliminationMember / us-gaap_StatementGeographicalAxis = cpn_WestMember |
|
| Intersegment Eliminations [Member] | Texas [Member] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Revenues from External Customers and Long-Lived Assets [Line Items] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Operating revenues |
|
|
|
|
|
|
|
|
23us-gaap_Revenues / us-gaap_ConsolidationItemsAxis = us-gaap_IntersegmentEliminationMember / us-gaap_StatementGeographicalAxis = stpr_TX |
|
(4)us-gaap_Revenues / us-gaap_ConsolidationItemsAxis = us-gaap_IntersegmentEliminationMember / us-gaap_StatementGeographicalAxis = stpr_TX |
|
61us-gaap_Revenues / us-gaap_ConsolidationItemsAxis = us-gaap_IntersegmentEliminationMember / us-gaap_StatementGeographicalAxis = stpr_TX |
|
| Intersegment Eliminations [Member] | East [Member] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Revenues from External Customers and Long-Lived Assets [Line Items] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Operating revenues |
|
|
|
|
|
|
|
|
47us-gaap_Revenues / us-gaap_ConsolidationItemsAxis = us-gaap_IntersegmentEliminationMember / us-gaap_StatementGeographicalAxis = cpn_EastMember |
|
117us-gaap_Revenues / us-gaap_ConsolidationItemsAxis = us-gaap_IntersegmentEliminationMember / us-gaap_StatementGeographicalAxis = cpn_EastMember |
|
38us-gaap_Revenues / us-gaap_ConsolidationItemsAxis = us-gaap_IntersegmentEliminationMember / us-gaap_StatementGeographicalAxis = cpn_EastMember |
|
| Intersegment Eliminations [Member] | Geography Consolidation and Elimination [Member] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Revenues from External Customers and Long-Lived Assets [Line Items] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Operating revenues |
|
|
|
|
|
|
|
|
$ (76)us-gaap_Revenues / us-gaap_ConsolidationItemsAxis = us-gaap_IntersegmentEliminationMember / us-gaap_StatementGeographicalAxis = cpn_GeographyConsolidationandEliminationMember |
|
$ (118)us-gaap_Revenues / us-gaap_ConsolidationItemsAxis = us-gaap_IntersegmentEliminationMember / us-gaap_StatementGeographicalAxis = cpn_GeographyConsolidationandEliminationMember |
|
$ (109)us-gaap_Revenues / us-gaap_ConsolidationItemsAxis = us-gaap_IntersegmentEliminationMember / us-gaap_StatementGeographicalAxis = cpn_GeographyConsolidationandEliminationMember |
|
|
|
|