XML 95 R55.htm IDEA: XBRL DOCUMENT v3.20.2
Derivative Financial Instruments, Investments and Fair Value Measurements - Schedule of Gains on Derivatives (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Derivative Instruments, Gain (Loss) [Line Items]        
Total gain on derivatives, net $ 5 $ 18 $ 70 $ 38
Forward purchases and sales contracts, net        
Derivative Instruments, Gain (Loss) [Line Items]        
Total gain on derivatives, net 4 17 55 37
Commodity swap instruments        
Derivative Instruments, Gain (Loss) [Line Items]        
Total gain on derivatives, net 1 0 5 0
Futures contracts        
Derivative Instruments, Gain (Loss) [Line Items]        
Total gain on derivatives, net $ 0 $ 1 $ 10 $ 1