Schedule II - Valuation And Qualifying Accounts (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Allowance for Doubtful Accounts
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Period	$ 96	$ 87	$ 86
Expense (Benefit)	74	87	86
Other Adjustments	3	(3)	1
Deductions	(95)	(75)	(86)
Balance at End of Period	78	96	87
Tax Valuation Allowance
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Period	85	106	103
Expense (Benefit)	35	(6)	(2)
Other Adjustments	9	(15)	5
Deductions	0	0	0
Balance at End of Period	$ 129	$ 85	$ 106