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Revenue - Summary of Changes in Net Carrying Amount of Contract Assets and Contract Liabilities (Detail) $ in Millions	3 Months Ended
	Mar. 31, 2020 USD ($)
Revenue From Contract With Customer [Abstract]
Balance at December 31, 2019	$ 643
Provision	(4)
Billings	(84)
Revenue recognized	99
Currency translation adjustments and other	(15)
Balance at March 31, 2020	639
Balance at December 31, 2019	427
Billings	282
Revenue recognized	(233)
Currency translation adjustments and other	(6)
Balance at March 31, 2020	$ 470

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