XML 38 R64.htm IDEA: XBRL DOCUMENT v3.19.3.a.u2
Derivative Instruments - Additional Information (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Aug. 31, 2018
SCL Senior Notes [Member]      
Derivative [Line Items]      
Cumulative fair value hedging adjustment included in the carrying amount of the SCL Senior Notes $ 34    
Fair Value Hedging [Member] | Designated as Hedging Instrument [Member] | Interest Rate Swap [Member]      
Derivative [Line Items]      
Derivative, notional amount     $ 5,500
Fair Value Hedging [Member] | Designated as Hedging Instrument [Member] | Interest Rate Swap [Member] | Interest Expense [Member]      
Derivative [Line Items]      
Derivative, realized gain (loss) on interest rate swaps 23 $ 9  
Fair Value Hedging [Member] | Designated as Hedging Instrument [Member] | Interest Rate Swap [Member] | Other Assets, Net [Member]      
Derivative [Line Items]      
Derivative asset 34    
Fair Value Hedging [Member] | Designated as Hedging Instrument [Member] | Interest Rate Swap [Member] | Fair Value, Inputs, Level 2 [Member]      
Derivative [Line Items]      
Derivative, fair value $ 81