v3.20.1
Derivative Instruments (Details 4) (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Summary of Derivative Instruments by Risk Exposure [Abstract]    
Gain (Loss) on Derivative Instruments, Net, Pretax [1] $ 174 $ 156
Gain (Loss) on Sale of Derivatives [2],[3] (3) 111
Mark-to-market gain (loss) [4] 177 45
Sales [Member]    
Summary of Derivative Instruments by Risk Exposure [Abstract]    
Gain (Loss) on Derivative Instruments, Net, Pretax [1],[5],[6] 507 37
Cost of Sales [Member]    
Summary of Derivative Instruments by Risk Exposure [Abstract]    
Gain (Loss) on Derivative Instruments, Net, Pretax [1],[5],[6] (309) 120
Interest Expense [Member]    
Summary of Derivative Instruments by Risk Exposure [Abstract]    
Gain (Loss) on Derivative Instruments, Net, Pretax [1] (24) (1)
Interest rate hedging instruments    
Summary of Derivative Instruments by Risk Exposure [Abstract]    
Mark-to-market gain (loss) [4] (24) (1)
Energy Related Derivative    
Summary of Derivative Instruments by Risk Exposure [Abstract]    
Gain (Loss) on Sale of Derivatives [2],[3] (3) 111
Mark-to-market gain (loss) [4] $ 201 $ 46
[1] 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.
[2] Does not include the realized value associated with derivative instruments that settle through physical delivery.
[3] Includes amortization of acquisition date fair value of financial derivative activity related to the acquisition of Champion Energy and Calpine Solutions.
[4] 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.
[5] Does not include the realized value associated with derivative instruments that settle through physical delivery.
[6] Includes amortization of acquisition date fair value of financial derivative activity related to the acquisition of Champion Energy and Calpine Solutions.