Schedule II - Valuation And Qualifying Accounts (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Allowance for Doubtful Accounts
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Period	$ 87	$ 86	$ 84
Expense (Benefit)	87	86	91
Other Adjustments	(3)	1	(3)
Deductions	(75)	(86)	(86)
Balance at End of Period	96	87	86
Tax Valuation Allowance
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Period	106	103	169
Expense (Benefit)	(6)	(2)	(63)
Other Adjustments	(15)	5	(3)
Deductions	0	0	0
Balance at End of Period	$ 85	$ 106	$ 103