Consolidated Statements of Cash Flows - USD ($)	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
OPERATING ACTIVITIES
Net income (loss)	$ 333,000,000	$ 832,000,000
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Provision for credit losses	841,000,000	136,000,000
Depreciation and amortization expense, net	86,000,000	121,000,000
Accretion of acquired loans	18,000,000	28,000,000
Increase in cash surrender value of corporate-owned life insurance	(58,000,000)	(57,000,000)
Stock-based compensation expense	51,000,000	48,000,000
Deferred income taxes (benefit)	(148,000,000)	68,000,000
Proceeds from sales of loans held for sale	6,437,000,000	4,445,000,000
Originations of loans held for sale, net of repayments	(6,816,000,000)	(4,890,000,000)
Net losses (gains) on sales of loans held for sale	(109,000,000)	(70,000,000)
Net losses (gains) on leased equipment	(16,000,000)	(11,000,000)
Net securities losses (gains)	(4,000,000)	0
Net losses (gains) on sales of fixed assets	3,000,000	11,000,000
Net decrease (increase) in trading account assets	395,000,000	(155,000,000)
Other operating activities, net	(908,000,000)	224,000,000
NET CASH PROVIDED BY (USED IN) OPERATING ACTIVITIES	105,000,000	730,000,000
INVESTING ACTIVITIES
Cash received (used) in acquisitions, net of cash acquired	0	(185,000,000)
Net decrease (increase) in short-term investments, excluding acquisitions	(12,764,000,000)	119,000,000
Purchases of securities available for sale	(4,567,000,000)	(2,940,000,000)
Proceeds from sales of securities available for sale	583,000,000	0
Proceeds from prepayments and maturities of securities available for sale	2,933,000,000	1,457,000,000
Proceeds from prepayments and maturities of held-to-maturity securities	998,000,000	652,000,000
Purchases of held-to-maturity securities	(5,000,000)	(9,000,000)
Purchases of other investments	(96,000,000)	(30,000,000)
Proceeds from sales of other investments	26,000,000	28,000,000
Proceeds from prepayments and maturities of other investments	11,000,000	36,000,000
Net decrease (increase) in loans, excluding acquisitions, sales and transfers	(11,967,000,000)	(2,747,000,000)
Proceeds from sales of portfolio loans	91,000,000	146,000,000
Proceeds from corporate-owned life insurance	40,000,000	27,000,000
Purchases of premises, equipment, and software	(27,000,000)	(38,000,000)
Proceeds from sales of premises and equipment	0	1,000,000
NET CASH PROVIDED BY (USED IN) INVESTING ACTIVITIES	(24,744,000,000)	(3,483,000,000)
FINANCING ACTIVITIES
Net increase (decrease) in deposits, excluding acquisitions	23,643,000,000	2,637,000,000
Net increase (decrease) in short-term borrowings	891,000,000	18,000,000
Net proceeds from issuance of long-term debt	2,501,000,000	1,351,000,000
Payments on long-term debt	(1,507,000,000)	(1,002,000,000)
Issuance of preferred shares	0	435,000,000
Open market Common Share repurchases	(117,000,000)	(346,000,000)
Employee equity compensation program Common Share repurchases	(36,000,000)	(33,000,000)
Net proceeds from reissuance of Common Shares	6,000,000	5,000,000
Cash dividends paid	(415,000,000)	(383,000,000)
NET CASH PROVIDED BY (USED IN) FINANCING ACTIVITIES	24,966,000,000	2,682,000,000
NET INCREASE (DECREASE) IN CASH AND DUE FROM BANKS	327,000,000	(71,000,000)
CASH AND DUE FROM BANKS AT BEGINNING OF PERIOD	732,000,000	678,000,000
CASH AND DUE FROM BANKS AT END OF PERIOD	1,059,000,000	607,000,000
Additional disclosures relative to cash flows:
Interest paid	465,000,000	619,000,000
Income taxes paid (refunded)	59,000,000	(43,000,000)
Noncash items:
Reduction of secured borrowing and related collateral	3,000,000	2,000,000
Loans transferred to portfolio from held for sale	25,000,000	5,000,000
Loans transferred to held for sale from portfolio	210,000,000	52,000,000
Loans transferred to OREO	93,000,000	16,000,000
CMBS risk retentions	27,000,000	9,000,000
ABS risk retentions	$ 9,000,000	$ 0