Consolidated Statement of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Operating Activities:
Net income	$ 2,774	$ 2,693	$ 2,420
Adjustments to reconcile net income to net cash provided by operating activities:
Deferred income tax (benefit)	(62)	(162)	(194)
Amortization of other intangible assets	238	245	234
Other non-cash adjustments for depreciation, amortization and accretion, net	918	1,312	1,276
Losses (gains) related to investment securities, net	2	(57)	(4)
Provision for credit losses	20	(33)	88
Change in trading account assets, net	108	57	99
Change in accrued interest and fees receivable, net	(156)	(173)	127
Change in collateral deposits, net	7,821	(7,662)	(2,951)
Change in unrealized losses (gains) on foreign exchange derivatives, net	(1,125)	(3,448)	3,652
Change in other assets, net	421	691	(1,406)
Change in accrued expenses and other liabilities, net	557	(574)	(170)
Other, net	438	401	361
Net cash provided by (used in) operating activities	11,954	(6,710)	3,532
Investing Activities:
Net decrease (increase) in interest-bearing deposits with banks	4,765	10,602	(47,995)
Net (increase) decrease in securities purchased under resale agreements	(2,203)	94	(1,619)
Proceeds from sales of available-for-sale securities	4,590	12,822	2,645
Proceeds from maturities of available-for-sale securities	17,254	23,484	23,644
Purchases of available-for-sale securities	(18,029)	(53,750)	(37,873)
Purchases of held-to-maturity securities under the MMLF program	0	0	(29,242)
Proceeds from maturities of held-to-maturity securities under the MMLF program	0	3,299	25,984
Proceeds from maturities of held-to-maturity securities	9,817	15,586	15,179
Purchases of held-to-maturity securities	(8,564)	(8,583)	(13,981)
Sale of loans	1,786	172	324
Net (increase) in loans	(1,667)	(4,779)	(1,939)
Business acquisitions, net of cash acquired	0	(346)	0
Divestitures	0	13	0
Purchases of equity investments and other long-term assets	(250)	(216)	(1,436)
Purchases of premises and equipment, net	(734)	(811)	(560)
Other, net	51	241	1,335
Net cash provided by (used in) investing activities	6,816	(2,172)	(65,534)
Financing Activities:
Net increase (decrease) in time deposits	1,673	(363)	(33,466)
Net (decrease) increase in all other deposits	(21,244)	15,611	91,391
Net (decrease) increase in securities sold under repurchase agreements	(398)	(1,838)	2,311
Net (decrease) increase in short-term borrowings under money market liquidity facility	0	(3,302)	3,302
Net increase (decrease) in other short-term borrowings	1,969	(557)	(154)
Proceeds from issuance of long-term debt, net of issuance costs	3,731	1,343	2,489
Payments for long-term debt and obligations under finance leases	(1,567)	(1,443)	(1,724)
Payments for redemption of preferred stock	0	(500)	(500)
Proceeds from issuance of common stock, net of issuance costs	0	1,900	0
Repurchases of common stock	(1,500)	(900)	(515)
Repurchases of common stock for employee tax withholding	(123)	(39)	(78)
Payments for cash dividends	(972)	(866)	(889)
Net cash (used in) provided by financing activities	(18,431)	9,046	62,167
Net increase	339	164	165
Cash and due from banks at beginning of period	3,631	3,467	3,302
Cash and due from banks at end of period	3,970	3,631	3,467
Supplemental disclosure:
Interest paid	1,354	37	375
Income taxes paid, net	$ 436	$ 559	$ 403