Parent Company Financial Statements - Statement of Condition (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Assets:
Interest-bearing deposits with banks	$ 101,593	$ 106,358
Trading account assets	650	758
Other assets	37,902	37,615
Total assets	301,450	314,624
Liabilities:
Consolidated banking subsidiary	22	0
Consolidated non-banking subsidiaries and unconsolidated entities	214	2,303
Total liabilities	276,259	287,261
Shareholders’ equity	25,191	27,363	$ 26,200	$ 24,431
Total liabilities and shareholders' equity	301,450	314,624
Parent Company
Assets:
Interest-bearing deposits with banks	460	482
Trading account assets	425	440
Investment securities available-for-sale	260	150
Consolidated banking subsidiary	26,579	27,821
Consolidated non-banking subsidiaries	9,151	9,060
Unconsolidated entities	121	122
Consolidated banking subsidiary	0	80
Consolidated non-banking subsidiaries and unconsolidated entities	3,512	5,029
Other assets	205	256
Total assets	40,713	43,440
Liabilities:
Accrued expenses and other liabilities	509	523
Long-term debt	14,777	13,250
Total liabilities	15,522	16,076
Shareholders’ equity	25,191	27,364
Total liabilities and shareholders' equity	$ 40,713	$ 43,440