Fair Value Measurements and Derivatives - Additional Information (Details) - USD ($)		3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Jun. 30, 2019	Dec. 31, 2018
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Settlements of undesignated derivatives				$ 19,000,000
Interest Rate Swap [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, Notional Amount	$ 0	$ 0		0
Fair value adjustment to the carrying amount of the December 2024 Notes	5,000,000	5,000,000		5,000,000
Interest Rate Contract [Member] | Cash Flow Hedging [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, Notional Amount	$ 425,000,000	425,000,000		425,000,000
Forward Contracts [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Maximum remaining maturity of foreign currency derivatives	15 months
Foreign Exchange Forward [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, Notional Amount	$ 517,000,000	517,000,000		517,000,000	$ 1,007,000,000
Foreign Exchange Forward [Member] | Cash Flow Hedging [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, Notional Amount	386,000,000	386,000,000		386,000,000
Currency Swap [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, Notional Amount	1,095,000,000	1,095,000,000		1,095,000,000	$ 1,097,000,000
Currency Swap [Member] | Cash Flow Hedging [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, Notional Amount	1,095,000,000	1,095,000,000		1,095,000,000
Other Expense, Net [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Loss on undesignated foreign currency derivative		(1,000,000)		12,000,000
Swedish krona [Member] | Foreign Exchange Forward [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, Notional Amount	7,000,000	7,000,000		7,000,000
Swedish krona [Member] | Foreign Exchange Forward [Member] | Cash Flow Hedging [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, Notional Amount	7,000,000	7,000,000		7,000,000
Swedish krona [Member] | Other Expense, Net [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Loss on undesignated foreign currency derivative			$ 13,000,000
Not Designated as Hedging Instrument [Member] | Foreign Exchange Forward [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, Notional Amount	131,000,000	131,000,000		131,000,000
Not Designated as Hedging Instrument [Member] | Currency Swap [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, Notional Amount	$ 0	$ 0		$ 0
Not Designated as Hedging Instrument [Member] | Swedish krona [Member] | Foreign Exchange Forward [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Settlements of undesignated derivatives			$ 21,000,000