SCHEDULE II-VALUATION AND QUALIFYING ACCOUNTS Valuation and Qualifying Accounts (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Allowance for doubtful accounts
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Period	$ 12	$ 19	$ 22
Provision/reversals Charged to Costs & Expenses	2	(6)	3
Charged to Other Accounts	0	0	0
Deductions	0	1	6
Balance at End of Period	14	12	19
Deferred tax valuation allowance
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Period	32	26	25
Provision/reversals Charged to Costs & Expenses	7	6	1
Charged to Other Accounts	0	0	0
Deductions	0	0	0
Balance at End of Period	39	$ 32	$ 26
Marketing Applications | Allowance for doubtful accounts
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Deductions	$ 5