Receivables, Net - Rollforward of Allowance for Doubtful Accounts (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Allowance For Doubtful Accounts Receivable Rollforward
Beginning balance	$ 27	$ 29	$ 34
Additions (deductions) charged to expenses	(2)	2	3
Charge-offs and other	(9)	(4)	(8)
Ending balance	$ 16	$ 27	$ 29