CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Statement of Comprehensive Income [Abstract]
Net income	$ 544	$ 421	$ 17
Other comprehensive income (loss), net of tax:
Changes in unrealized gains and losses on anticipated sales hedging transactions	(10)	21	(15)
Changes in unrealized gains and losses on anticipated sales hedging transactions		(21)	15
Changes in unrealized gains and losses on forward interest rate swap hedging transactions	0
Changes in unrealized gains and losses on forward interest rate swap hedging transactions		9	6
Foreign currency translation adjustment	1	(13)	2
Comprehensive income	$ 535	$ 438	$ 10

Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

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Amount after tax and reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature, attributable to parent entity.

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Amount after tax and reclassification adjustments, of increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss).

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