Income Taxes (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Dec. 31, 2022	Mar. 31, 2022
Income Taxes
Effective tax rate of income (loss) before income taxes	23.60%		23.50%
Excess tax benefits associated with equity-based compensation	$ 7		$ 10
Equity in net losses of unconsolidated entities	11		15
Increase (decrease) to accruals and related deferred taxes	0		3
2017 Audit [Member]
Income Taxes
Income tax deposit paid		$ 103
Low income housing investments [Member]
Income Taxes
Equity in net losses of unconsolidated entities	13		14
Income tax benefit from low-income housing investments	22		23
Interest expense	$ 4		$ 3