Derivatives and Hedging - Notional and Fair Values of Derivative Instruments (Details) - Foreign exchange contracts - USD ($)	3 Months Ended
	Mar. 31, 2020	Dec. 31, 2019
Derivatives, Fair Value
Notional Amount	$ 922,000,000	$ 876,000,000
Derivative Assets	12,000,000	18,000,000
Derivative Liabilities	$ (4,000,000)	1,000,000
Term of derivative contract	30 days
Other Current Assets
Derivatives, Fair Value
Derivative Assets	$ 7,000,000	7,000,000
Other non-current assets
Derivatives, Fair Value
Derivative Assets	5,000,000	11,000,000
Other current liabilities
Derivatives, Fair Value
Derivative Liabilities	3,000,000	1,000,000
Other non-current liabilities
Derivatives, Fair Value
Derivative Liabilities	1,000,000	0
Derivatives accounted for as hedges
Derivatives, Fair Value
Notional Amount	537,000,000	579,000,000
Derivative Assets	8,000,000	16,000,000
Derivative Liabilities	(3,000,000)	1,000,000
Not Designated as Hedging Instrument
Derivatives, Fair Value
Notional Amount	385,000,000	297,000,000
Derivative Assets	4,000,000	2,000,000
Derivative Liabilities	$ (1,000,000)	$ 0