Consolidated Statements of Cash Flows - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022
OPERATING ACTIVITIES
Net income (loss)	$ 599	$ 981
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Provision for credit losses	306	128
Depreciation and amortization expense, net	71	74
Accretion of acquired loans	11	16
Increase in cash surrender value of corporate-owned life insurance	(52)	(54)
Stock-based compensation expense	63	59
Deferred income taxes (benefit)	29	99
Proceeds from sales of loans held for sale	3,353	6,855
Originations of loans held for sale, net of repayments	(3,549)	(5,414)
Net losses (gains) on sales of loans held for sale	(37)	(81)
Net losses (gains) on leased equipment	(3)	(1)
Net securities losses (gains)	7	0
Net losses (gains) on sales of fixed assets	13	(4)
Net decrease (increase) in trading account assets	(348)	(108)
Other operating activities, net	837	(1,747)
NET CASH PROVIDED BY (USED IN) OPERATING ACTIVITIES	1,300	803
INVESTING ACTIVITIES
Purchases of intangibles assets via acquisitions	0	(12)
Cash received (used) in acquisitions, net of cash acquired	0	(58)
Net decrease (increase) in short-term investments, excluding acquisitions	(6,527)	8,554
Purchases of securities available for sale	(289)	(3,969)
Proceeds from sales of securities available for sale	511	0
Proceeds from prepayments and maturities of securities available for sale	1,172	2,797
Proceeds from prepayments and maturities of held-to-maturity securities	708	1,321
Purchases of held-to-maturity securities	(1,179)	(1,964)
Purchases of other investments	(533)	(369)
Proceeds from sales of other investments	354	8
Proceeds from prepayments and maturities of other investments	5	6
Net decrease (increase) in loans, excluding acquisitions, sales and transfers	303	(10,580)
Proceeds from sales of portfolio loans	89	81
Proceeds from corporate-owned life insurance	43	39
Purchases of premises, equipment, and software	(74)	(42)
Proceeds from sales of premises and equipment	2	11
NET CASH PROVIDED BY (USED IN) INVESTING ACTIVITIES	(5,415)	(4,177)
FINANCING ACTIVITIES
Net increase (decrease) in deposits	2,537	(6,707)
Net increase (decrease) in short-term borrowings	(812)	5,282
Net proceeds from issuance of long-term debt	5,240	12,101
Payments on long-term debt	(2,452)	(7,081)
Open market common share repurchases	(38)	0
Employee equity compensation program Common Share repurchases	(34)	(44)
Net proceeds from reissuance of Common Shares	1	5
Cash dividends paid	(456)	(417)
NET CASH PROVIDED BY (USED IN) FINANCING ACTIVITIES	3,986	3,139
NET INCREASE (DECREASE) IN CASH AND DUE FROM BANKS	(129)	(235)
CASH AND DUE FROM BANKS AT BEGINNING OF PERIOD	887	913
CASH AND DUE FROM BANKS AT END OF PERIOD	758	678
Additional disclosures relative to cash flows:
Interest paid	1,360	169
Income taxes paid (refunded)	140	131
Noncash items:
Reduction of secured borrowing and related collateral	3	4
Loans transferred to portfolio from held for sale	83	57
Loans transferred to held for sale from portfolio	19	0
Loans transferred to OREO	4	3
CMBS risk retentions	0	6
ABS risk retentions	$ 7	$ 9