SCHEDULE II-VALUATION AND QUALIFYING ACCOUNTS Valuation and Qualifying Accounts (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Allowance for doubtful accounts
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Period	$ 14	$ 18	$ 14
Provision/reversals Charged to Costs & Expenses	(1)	(3)	4
Charged to Other Accounts	0	0	0
Deductions	(4)	(1)	0
Balance at End of Period	9	14	18
Deferred tax valuation allowance
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Period	51	45	39
Provision/reversals Charged to Costs & Expenses	7	6	6
Charged to Other Accounts	0	0	0
Deductions	0	0	0
Balance at End of Period	$ 58	$ 51	$ 45