Accumulated Other Comprehensive Income (Loss) - Schedule of Changes in Accumulated Other Comprehensive Income (Loss) (Detail) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2021	Mar. 31, 2020
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Stockholders' Equity Attributable to Parent	$ 6,310
Net current period other comprehensive income (loss)	(404)	$ (447)
Stockholders' Equity Attributable to Parent	21,642
Accumulated Translation Adjustment [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Stockholders' Equity Attributable to Parent	(285)	(373)
OCI, before Reclassifications, Net of Tax, Attributable to Parent	(417)	(452)
Reclassification from AOCI, Current Period, Net of Tax, Attributable to Parent	0	0
Net current period other comprehensive income (loss)	(417)	(452)
Stockholders' Equity Attributable to Parent	(702)	(825)
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Stockholders' Equity Attributable to Parent	(7)	2
OCI, before Reclassifications, Net of Tax, Attributable to Parent	2	3
Reclassification from AOCI, Current Period, Net of Tax, Attributable to Parent	(2)	2
Net current period other comprehensive income (loss)	4	1
Stockholders' Equity Attributable to Parent	(3)	3
Accumulated Defined Benefit Plans Adjustment
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Stockholders' Equity Attributable to Parent	(406)	(346)
OCI, before Reclassifications, Net of Tax, Attributable to Parent	2	0
Reclassification from AOCI, Current Period, Net of Tax, Attributable to Parent	(7)	(4)
Net current period other comprehensive income (loss)	9	4
Stockholders' Equity Attributable to Parent	(397)	(342)
AOCI Attributable to Parent [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Stockholders' Equity Attributable to Parent	(698)	(717)
OCI, before Reclassifications, Net of Tax, Attributable to Parent	(413)	(449)
Reclassification from AOCI, Current Period, Net of Tax, Attributable to Parent	(9)	(2)
Net current period other comprehensive income (loss)	(404)	(447)
Stockholders' Equity Attributable to Parent	$ (1,102)	$ (1,164)

Accumulated Other Comprehensive Income (Loss) [Roll Forward]

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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 and reclassification adjustments of other comprehensive income (loss).

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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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