Income Taxes - Components of Income Tax Expense (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Current:
Federal	$ 399	$ 580	$ 367
State and local	169	228	143
Total current	568	808	510
Deferred:
Federal	(21)	(64)	(18)
State and local	(6)	(33)	(12)
Total deferred	(27)	(97)	(30)
Amortization of investments in partnerships under proportional amortization method	181	167	140
Total income taxes	$ 722	$ 878	$ 620