Federal, State and Local Taxes - Income Tax Expense (Benefit) (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Income Tax Disclosure [Abstract]
Federal – current	$ 147	$ 188	$ (148)
State and local – current	32	35	5
Total current	179	223	(143)
Federal – deferred	(10)	(28)	190
State and local – deferred	7	15	29
Total deferred	(3)	(13)	219
Income tax expense reported in net income	176	210	77
Securities available-for-sale	(223)	(42)	16
Pension liability adjustments	(6)	10
Cash flow hedge	23	9	(13)
Adoption of ASU 2016-13			$ (4)
Accounting Standards Update [Extensible List]			Accounting Standards Update 2016-13
Total income taxes	$ (30)	$ 187	$ 76