Derivative Financial Instruments - Schedule of Fair Value by Underlying Risk and Balance Sheet Classification (Detail) - Cash Flow Hedging [Member] - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Designated as Hedging Instrument [Member]
Derivatives Fair Value [Line Items]
Total derivatives asset	$ 4	$ 3
Total derivatives liability	12	42
Designated as Hedging Instrument [Member] | Accrued Liabilities [Member]
Derivatives Fair Value [Line Items]
Total derivatives liability	10	10
Derivatives Not Designated as Hedges [Member]
Derivatives Fair Value [Line Items]
Total derivatives asset	1	3
Total derivatives liability	68	3
Derivatives Not Designated as Hedges [Member] | Accrued Liabilities [Member]
Derivatives Fair Value [Line Items]
Total derivatives liability	68	3
Other Current Assets [Member] | Designated as Hedging Instrument [Member]
Derivatives Fair Value [Line Items]
Total derivatives asset	3	3
Other Current Assets [Member] | Derivatives Not Designated as Hedges [Member]
Derivatives Fair Value [Line Items]
Total derivatives asset	1	3
Other Non-current Assets [Member] | Designated as Hedging Instrument [Member]
Derivatives Fair Value [Line Items]
Total derivatives asset	1
Other Non-current Liabilities [Member] | Designated as Hedging Instrument [Member]
Derivatives Fair Value [Line Items]
Total derivatives liability	$ 2	$ 32