Accumulated Other Comprehensive Loss - Schedule of Income Tax (Provision) Benefit Allocated to Components of OCI (Detail) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2020	Mar. 31, 2019
Equity [Abstract]
Foreign currency translation adjustments	$ (7)	$ 0
Unrecognized pension and postretirement costs	3	4
Derivative financial instruments	(9)	2
Income tax (expense) benefit related to AOCL	$ (13)	$ 6

Other Comprehensive Income (Loss), Derivative Financial Instruments, Tax

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- References

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- Definition

Amount of tax expense (benefit), after 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.

+ References

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Amount of tax (expense) benefit for reclassification adjustment from accumulated other comprehensive (income) loss of defined benefit plan.

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- Definition

Amount of tax expense (benefit) allocated to other comprehensive income (loss).

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