Consolidated Statements of Cash Flows - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
OPERATING ACTIVITIES
Net income (loss)	$ 1,523	$ 1,996
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Provision for credit losses	237	(422)
Depreciation and amortization expense, net	100	80
Accretion of acquired loans	22	19
Increase in cash surrender value of corporate-owned life insurance	(83)	(82)
Stock-based compensation expense	89	78
Deferred income taxes (benefit)	38	126
Proceeds from sales of loans held for sale	9,337	11,282
Originations of loans held for sale, net of repayments	(7,597)	(10,818)
Net losses (gains) on sales of loans held for sale	(116)	(192)
Net losses (gains) on leased equipment	6	(9)
Net securities losses (gains)	9	0
Net losses (gains) on sales of fixed assets	(5)	13
Net decrease (increase) in trading account assets	(367)	(167)
Net transfers of loans held for sale	0	26
Other operating activities, net	(309)	(767)
NET CASH PROVIDED BY (USED IN) OPERATING ACTIVITIES	2,884	1,163
INVESTING ACTIVITIES
Purchases of intangibles assets via acquisitions	(12)	0
Cash received (used) in acquisitions, net of cash acquired	(58)	(9)
Net decrease (increase) in short-term investments, excluding acquisitions	6,114	(3,414)
Purchases of securities available for sale	(4,429)	(19,726)
Proceeds from sales of securities available for sale	0	0
Proceeds from prepayments and maturities of securities available for sale	3,774	5,824
Proceeds from prepayments and maturities of held-to-maturity securities	1,891	2,004
Purchases of held-to-maturity securities	(2,727)	(3)
Purchases of other investments	(620)	(26)
Proceeds from sales of other investments	13	36
Proceeds from prepayments and maturities of other investments	9	8
Net decrease (increase) in loans, excluding acquisitions, sales and transfers	(14,443)	(1,031)
Proceeds from sales of portfolio loans	125	243
Proceeds from corporate-owned life insurance	60	56
Purchases of premises, equipment, and software	(61)	(31)
Proceeds from sales of premises and equipment	13	0
NET CASH PROVIDED BY (USED IN) INVESTING ACTIVITIES	(10,351)	(16,069)
FINANCING ACTIVITIES
Net increase (decrease) in deposits	(7,717)	16,649
Net increase (decrease) in short-term borrowings	8,039	16
Net proceeds from issuance of long-term debt	15,601	1,203
Payments on long-term debt	(8,577)	(1,521)
Issuance of preferred shares	590	0
Open market common share repurchases	0	(559)
Employee equity compensation program Common Share repurchases	(44)	(32)
Common share purchases under ASR program	0	(585)
Net proceeds from reissuance of Common Shares	5	21
Cash dividends paid	(626)	(614)
NET CASH PROVIDED BY (USED IN) FINANCING ACTIVITIES	7,271	14,578
NET INCREASE (DECREASE) IN CASH AND DUE FROM BANKS	(196)	(328)
CASH AND DUE FROM BANKS AT BEGINNING OF PERIOD	913	1,091
CASH AND DUE FROM BANKS AT END OF PERIOD	717	763
Additional disclosures relative to cash flows:
Interest paid	277	254
Income taxes paid (refunded)	160	212
Noncash items:
Reduction of secured borrowing and related collateral	7	7
Loans transferred to portfolio from held for sale	57	86
Loans transferred to held for sale from portfolio	0	3,403
Loans transferred to OREO	5	3
CMBS risk retentions	12	0
ABS risk retentions	9	13
Securities received as consideration	$ 0	$ 2,825