Consolidated Statements of Cash Flows - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
OPERATING ACTIVITIES
Net income (loss)	$ 981	$ 1,351
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Provision for credit losses	128	(315)
Depreciation and amortization expense, net	74	21
Accretion of acquired loans	16	13
Increase in cash surrender value of corporate-owned life insurance	(54)	(54)
Stock-based compensation expense	59	52
Deferred income taxes (benefit)	99	196
Proceeds from sales of loans held for sale	6,855	7,629
Originations of loans held for sale, net of repayments	(5,414)	(7,494)
Net losses (gains) on sales of loans held for sale	(81)	(120)
Net losses (gains) on leased equipment	(1)	(6)
Net losses (gains) on sales of fixed assets	(4)	7
Net decrease (increase) in trading account assets	(108)	(116)
Net transfers of loans held for sale	0	26
Other operating activities, net	(1,747)	(942)
NET CASH PROVIDED BY (USED IN) OPERATING ACTIVITIES	803	248
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	8,554	(4,266)
Purchases of securities available for sale	(3,969)	(11,978)
Proceeds from sales of securities available for sale	0	0
Proceeds from prepayments and maturities of securities available for sale	2,797	4,286
Proceeds from prepayments and maturities of held-to-maturity securities	1,321	1,427
Purchases of held-to-maturity securities	(1,964)	(3)
Purchases of other investments	(369)	(19)
Proceeds from sales of other investments	8	26
Proceeds from prepayments and maturities of other investments	6	6
Net decrease (increase) in loans, excluding acquisitions, sales and transfers	(10,580)	249
Proceeds from sales of portfolio loans	81	163
Proceeds from corporate-owned life insurance	39	36
Purchases of premises, equipment, and software	(42)	(32)
Proceeds from sales of premises and equipment	11	0
NET CASH PROVIDED BY (USED IN) INVESTING ACTIVITIES	(4,177)	(10,114)
FINANCING ACTIVITIES
Net increase (decrease) in deposits, excluding acquisitions	(6,707)	10,790
Net increase (decrease) in short-term borrowings	5,282	(45)
Net proceeds from issuance of long-term debt	12,101	1,200
Payments on long-term debt	(7,081)	(1,518)
Open market common share repurchases	0	(435)
Employee equity compensation program Common Share repurchases	(44)	(32)
Net proceeds from reissuance of Common Shares	5	20
Cash dividends paid	(417)	(413)
NET CASH PROVIDED BY (USED IN) FINANCING ACTIVITIES	3,139	9,567
NET INCREASE (DECREASE) IN CASH AND DUE FROM BANKS	(235)	(299)
CASH AND DUE FROM BANKS AT BEGINNING OF PERIOD	913	1,091
CASH AND DUE FROM BANKS AT END OF PERIOD	678	792
Additional disclosures relative to cash flows:
Interest paid	169	200
Income taxes paid (refunded)	131	191
Noncash items:
Reduction of secured borrowing and related collateral	4	2
Loans transferred to portfolio from held for sale	57	86
Loans transferred to held for sale from portfolio	0	97
Loans transferred to OREO	3	2
CMBS risk retentions	6	0
ABS risk retentions	$ 9	$ 14