Schedule II - Valuation And Qualifying Accounts (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Allowance for Doubtful Accounts
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Period	$ 84	$ 60	$ 52
Expense (Benefit)	91	107	73
Other Adjustments	(3)	(2)	3
Deductions	(86)	(81)	(68)
Balance at End of Period	86	84	60
Tax Valuation Allowance
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Period	169	207	214
Expense (Benefit)	(63)	(35)	(1)
Other Adjustments	(3)	(3)	(6)
Deductions	0	0	0
Balance at End of Period	$ 103	$ 169	$ 207