v3.7.0.1
Derivative Instruments (Details 5) (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Derivative Instruments, Gain (Loss) [Line Items]    
Interest expense $ 159 $ 157
Interest Rate Hedging Instruments    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Instruments, Gain (Loss) Recognized in Other Comprehensive Income (Loss), Effective Portion, Net [1],[2] (4) (12)
Interest expense [3],[4] 0 1
Reclassification out of Accumulated Other Comprehensive Income [Member] | Interest Rate Hedging Instruments    
Derivative Instruments, Gain (Loss) [Line Items]    
Interest expense [1],[2],[5] $ (11) $ (11)
[1] We did not record any material gain (loss) on hedge ineffectiveness related to our interest rate hedging instruments designated as cash flow hedges during the three months ended March 31, 2017 and 2016.
[2] We recorded an income tax expense of nil for each of the three months ended March 31, 2017 and 2016, in AOCI related to our cash flow hedging activities.
[3] In addition to changes in market value on derivatives not designated as hedges, changes in mark-to-market gain (loss) also includes adjustments to reflect changes in credit default risk exposure.
[4] In addition to changes in market value on interest rate hedging instruments not designated as hedges, changes in mark-to-market gain (loss) also includes hedge ineffectiveness.
[5] Cumulative cash flow hedge losses attributable to Calpine, net of tax, remaining in AOCI were $94 million and $90 million at March 31, 2017 and December 31, 2016, respectively. Cumulative cash flow hedge losses attributable to the noncontrolling interest, net of tax, remaining in AOCI were $8 million and $8 million at March 31, 2017 and December 31, 2016, respectively.