Fair Value of Financial Instruments - Summary of Fair Value of Financial Assets and (Liabilities) (Details) - USD ($) $ in Millions	Jun. 30, 2020	Dec. 31, 2019
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Cash equivalents	$ 245	$ 70
Rabbi trust assets	14	12
Deferred compensation obligation	(14)	(12)
Total	179	36
Derivatives Designated as Hedging Instruments
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative liabilities	(66)	(34)
Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Cash equivalents	245	70
Rabbi trust assets	14	12
Deferred compensation obligation	(14)	(12)
Total	245	70
Quoted Prices in Active Markets for Identical Assets (Level 1) | Derivatives Designated as Hedging Instruments
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative liabilities	0	0
Significant Other Observable Inputs (Level 2)
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Cash equivalents	0	0
Rabbi trust assets	0	0
Deferred compensation obligation	0	0
Total	(66)	(34)
Significant Other Observable Inputs (Level 2) | Derivatives Designated as Hedging Instruments
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative liabilities	$ (66)	$ (34)