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Accumulated Other Comprehensive Loss - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Statement Of Income And Comprehensive Income [Abstract]
Other comprehensive income (loss) before reclassifications	$ (180)	$ 20
Changes in fair value of open derivatives	(56)
Cumulative changes in the fair value of derivatives	$ 4

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- Definition

Change in fair value of derivatives.

+ References

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- Definition

Other comprehensive income (loss), cumulative changes in net gain (loss) from cash flow hedges, tax.

+ References

No definition available.

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- Definition

Amount after tax, before 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

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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