Long-Term Debt - Schedule of Interest Expense, Net and Other (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Debt Disclosure [Abstract]
Debt	$ 119	$ 130	$ 351	$ 382
Finance lease obligations	4	5	14	16
Amortization of deferred financing costs and debt issuance discount	7	7	19	22
Interest income	(1)	(5)	(8)	(14)
Interest expense, net	129	137	376	406
Cross-currency rate swaps \| Derivatives designated as net investment hedges \| Interest expense, net
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Gain (loss) reclassified to earnings, net investment hedge	$ 15	$ 16	$ 56	$ 53

Amount of amortization expense attributable to debt discount (premium) and debt issuance costs.

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Amount of interest expense on finance lease liability.

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Amount before accretion (amortization) of purchase discount (premium) of interest income on nonoperating securities.

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Amount, before tax, of reclassification from accumulated other comprehensive income (AOCI) for gain (loss) from derivative designated and qualifying as net investment hedge.

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