Income Taxes (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Income Taxes
Effective tax rate of income (loss) before income taxes	18.60%	23.60%
Excess tax benefits associated with equity-based compensation	$ 21	$ 7
Equity in net losses of unconsolidated entities	19	11
Alternative fuel tax credits	37	2
Low income housing investments [Member]
Income Taxes
Equity in net losses of unconsolidated entities	20	13
Income tax benefit from low-income housing investments	28	22
Interest expense	$ 6	$ 4