Goodwill And Other Acquired Intangible Assets - Amortization Expense Relating to Acquired Intangible Assets (Detail) - USD ($) $ in Millions	12 Months Ended			36 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2025
Finite-Lived Intangible Assets [Line Items]
Amortization expense	$ 215	$ 198	$ 198
Charges related to asset abandonment	3	43	$ 0	$ 46
Incremental amortization
Finite-Lived Intangible Assets [Line Items]
Charges related to asset abandonment	0	$ 31		$ 31
Incremental amortization | Amortization of Intangible Assets
Finite-Lived Intangible Assets [Line Items]
Charges related to asset abandonment	$ 5