Income Taxes - Components of Income Tax Expense (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Current
Federal	$ 580	$ 367	$ 332
State and local	228	143	85
Total current	808	510	417
Deferred
Federal	(64)	(18)	72
State and local	(33)	(12)	15
Total deferred	(97)	(30)	87
Amortization of investments in qualified affordable housing projects	167	140	92
Income taxes	$ 878	$ 620	$ 596