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Variable Interest Entities and Unconsolidated Investments (Equity Method Investment Summarized Financial Information) (Details) (USD $)
In Millions, unless otherwise specified |
12 Months Ended | ||
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Dec. 31, 2014
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Dec. 31, 2013
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Dec. 31, 2012
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| Equity Method Investment, Summarized Financial Information, Assets [Abstract] | |||
| Equity Method Investment Summarized Financial Information Cash and Cash Equivalents | $ 58cpn_EquityMethodInvestmentSummarizedFinancialInformationCashAndCashEquivalents | $ 57cpn_EquityMethodInvestmentSummarizedFinancialInformationCashAndCashEquivalents | |
| Equity Method Investment, Summarized Financial Information, Current Assets | 28us-gaap_EquityMethodInvestmentSummarizedFinancialInformationCurrentAssets | 25us-gaap_EquityMethodInvestmentSummarizedFinancialInformationCurrentAssets | |
| Equity Method Investment, Summarized Financial Information, Property, Plant and Equipment, net | 532cpn_EquityMethodInvestmentSummarizedFinancialInformationPropertyPlantAndEquipmentNet | 588cpn_EquityMethodInvestmentSummarizedFinancialInformationPropertyPlantAndEquipmentNet | |
| Equity Method Investment, Summarized Financial Information, Noncurrent Assets | 2us-gaap_EquityMethodInvestmentSummarizedFinancialInformationNoncurrentAssets | 2us-gaap_EquityMethodInvestmentSummarizedFinancialInformationNoncurrentAssets | |
| Equity Method Investment, Summarized Financial Information, Assets | 620us-gaap_EquityMethodInvestmentSummarizedFinancialInformationAssets | 672us-gaap_EquityMethodInvestmentSummarizedFinancialInformationAssets | |
| Equity Method Investment, Summarized Financial Information, Liabilities [Abstract] | |||
| Equity Method Investment, Summarized Financial Information, Current Maturities of Long-term Debt | 21cpn_EquityMethodInvestmentSummarizedFinancialInformationCurrentMaturitiesOfLongTermDebt | 23cpn_EquityMethodInvestmentSummarizedFinancialInformationCurrentMaturitiesOfLongTermDebt | |
| Equity Method Investment, Summarized Financial Information, Current Liabilities | 28us-gaap_EquityMethodInvestmentSummarizedFinancialInformationCurrentLiabilities | 44us-gaap_EquityMethodInvestmentSummarizedFinancialInformationCurrentLiabilities | |
| Equity Method Investment, Summarized Financial Information, Long-Term Debt | 321cpn_EquityMethodInvestmentSummarizedFinancialInformationLongTermDebt | 372cpn_EquityMethodInvestmentSummarizedFinancialInformationLongTermDebt | |
| Equity Method Investment, Summarized Financial Information, Long-term Derivative Liabilities | 51cpn_EquityMethodInvestmentSummarizedFinancialInformationLongTermDerivativeLiabilities | 35cpn_EquityMethodInvestmentSummarizedFinancialInformationLongTermDerivativeLiabilities | |
| Equity Method Investment, Summarized Financial Information, Liabilities | 421us-gaap_EquityMethodInvestmentSummarizedFinancialInformationLiabilities | 474us-gaap_EquityMethodInvestmentSummarizedFinancialInformationLiabilities | |
| Equity Method Investment Summarized Financial Information, Equity [Abstract] | |||
| Equity Method Investment Summarized Financial Information, Equity | 199us-gaap_EquityMethodInvestmentSummarizedFinancialInformationEquity | 198us-gaap_EquityMethodInvestmentSummarizedFinancialInformationEquity | |
| Equity Method Investment, Summarized Financial Information, Liabilities and Equity | 620us-gaap_EquityMethodInvestmentSummarizedFinancialInformationLiabilitiesAndEquity | 672us-gaap_EquityMethodInvestmentSummarizedFinancialInformationLiabilitiesAndEquity | |
| Equity Method Investment, Summarized Financial Information, Gross Profit (Loss) [Abstract] | |||
| Equity Method Investment, Summarized Financial Information, Revenue | 239us-gaap_EquityMethodInvestmentSummarizedFinancialInformationRevenue | 207us-gaap_EquityMethodInvestmentSummarizedFinancialInformationRevenue | 247us-gaap_EquityMethodInvestmentSummarizedFinancialInformationRevenue |
| Equity Method Investment, Summarized Financial Information, Cost of Sales | 168us-gaap_EquityMethodInvestmentSummarizedFinancialInformationCostOfSales | 128us-gaap_EquityMethodInvestmentSummarizedFinancialInformationCostOfSales | 171us-gaap_EquityMethodInvestmentSummarizedFinancialInformationCostOfSales |
| Equity Method Investment, Summarized Financial Information, Gross Profit (Loss) | 71us-gaap_EquityMethodInvestmentSummarizedFinancialInformationGrossProfitLoss | 79us-gaap_EquityMethodInvestmentSummarizedFinancialInformationGrossProfitLoss | 76us-gaap_EquityMethodInvestmentSummarizedFinancialInformationGrossProfitLoss |
| Equity Method Investment Summarized Financial Information Interest (Income) Expense | 23cpn_EquityMethodInvestmentSummarizedFinancialInformationInterestIncomeExpense | 24cpn_EquityMethodInvestmentSummarizedFinancialInformationInterestIncomeExpense | 27cpn_EquityMethodInvestmentSummarizedFinancialInformationInterestIncomeExpense |
| Equity Method Investment Summarized Financial Information Other (Income) Expense Net | 0cpn_EquityMethodInvestmentSummarizedFinancialInformationOtherIncomeExpenseNet | (3)cpn_EquityMethodInvestmentSummarizedFinancialInformationOtherIncomeExpenseNet | (2)cpn_EquityMethodInvestmentSummarizedFinancialInformationOtherIncomeExpenseNet |
| Equity Method Investment, Summarized Financial Information, Net Income (Loss) | $ 48us-gaap_EquityMethodInvestmentSummarizedFinancialInformationNetIncomeLoss | $ 58us-gaap_EquityMethodInvestmentSummarizedFinancialInformationNetIncomeLoss | $ 51us-gaap_EquityMethodInvestmentSummarizedFinancialInformationNetIncomeLoss |
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- Definition
Equity Method Investment Summarized Financial Information Cash and Cash Equivalents No definition available.
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- Definition
Equity Method Investment, Summarized Financial Information, Current Maturities of Long-term Debt No definition available.
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- Definition
Equity Method Investment Summarized Financial Information Interest (Income) Expense No definition available.
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- Definition
Equity Method Investment, Summarized Financial Information, Long-Term Debt No definition available.
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Equity Method Investment, Summarized Financial Information, Long-term Derivative Liabilities No definition available.
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- Definition
Equity Method Investment Summarized Financial Information Other (Income) Expense Net No definition available.
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- Definition
Equity Method Investment, Summarized Financial Information, Property, Plant and Equipment, net No definition available.
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- Definition
The amount of assets reported by an equity method investment of the entity. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The amount of the cost of sales reported by an equity method investment of the entity. No definition available.
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- Definition
The amount of current assets reported by an equity method investment of the entity. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The amount of current liabilities reported by an equity method investment of the entity. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of equity, including noncontrolling interest, reported by an equity method investment of the entity. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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- Definition
The amount of gross profit (loss) reported by an equity method investment of the entity. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The amount of liabilities reported by an equity method investment of the entity. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The amount of liabilities and equity reported by an equity method investment of the entity. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The amount of net income (loss) reported by an equity method investment of the entity. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The amount of noncurrent assets reported by an equity method investment of the entity. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The amount of revenue from sale of goods and services reduced by sales returns, allowances, and discounts reported by an equity method investment of the entity. No definition available.
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