Income Taxes - Pretax Income (Loss) for Domestic and Foreign Operations (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Income Tax Disclosure [Abstract]
United States (U.S.)	$ (1,082)	$ (2,642)	$ 1,418
Foreign	153	15	496
Income (loss) before income taxes	$ (929)	$ (2,627)	$ 1,914