v3.19.3

Supplemental Financial Statement Information - Accumulated Other Comprehensive Income (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Stockholders' equity, beginning balance	$ (7,385)
Other comprehensive income (loss) before reclassifications	3	$ (177)
Amounts reclassified from accumulated other comprehensive income (loss)	0	0
Other comprehensive income (loss)	3	(177)
Stockholders' equity, ending balance	15,062
Accumulated Other Comprehensive Loss
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Stockholders' equity, beginning balance	(188)	(3)
Stockholders' equity, ending balance	(185)	(180)
Foreign Currency Translation Adjustments
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Stockholders' equity, beginning balance	(228)	(3)
Other comprehensive income (loss) before reclassifications	3	(219)
Amounts reclassified from accumulated other comprehensive income (loss)	0	0
Other comprehensive income (loss)	3	(219)
Stockholders' equity, ending balance	(225)	(222)
Unrealized Gains (Losses) on Available-for-Sale Securities, Net of Tax
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Stockholders' equity, beginning balance	40	0
Other comprehensive income (loss) before reclassifications	0	42
Amounts reclassified from accumulated other comprehensive income (loss)	0	0
Other comprehensive income (loss)	0	42
Stockholders' equity, ending balance	$ 40	$ 42

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Amount after tax, before reclassification adjustments, of other comprehensive income (loss), attributable to parent.

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Amount after tax of other comprehensive income (loss) attributable to parent entity.

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Amount after tax of reclassification adjustments of other comprehensive income (loss) attributable to parent.

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Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity.

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