Consolidated Statements of Cash Flows - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 153	$ 204
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for credit losses	13	45
Depreciation and amortization	32	36
Share-based compensation	16	17
Deferred income tax expense	22	6
Net decrease (increase) in trading securities	(11)	77
Net decrease in loans held for sale	41	7
Change in other liabilities	(77)	(529)
Change in other assets	76	362
Other, net	(4)	(4)
Net cash provided by operating activities	261	221
CASH FLOWS FROM INVESTING ACTIVITIES
Net decrease (increase) in money market investments	(157)	727
Proceeds from maturities and paydowns of investment securities held-to-maturity	232	237
Purchases of investment securities held-to-maturity	0	(10)
Proceeds from sales, maturities, and paydowns of investment securities available-for-sale	480	583
Purchases of investment securities available-for-sale	(182)	(138)
Net change in loans and leases	(321)	(738)
Purchases and sales of other noninterest-bearing investments	25	(37)
Purchases of premises and equipment	(30)	(31)
Other, net	6	(2)
Net cash provided by investing activities	53	591
CASH FLOWS FROM FINANCING ACTIVITIES
Net decrease in deposits	(724)	(2,445)
Net change in short-term borrowed funds	516	1,707
Proceeds from the issuance of common stock	0	2
Dividends paid on common and preferred stock	(71)	(69)
Bank common stock repurchased	(35)	(50)
Other, net	(7)	(7)
Net cash used in financing activities	(321)	(862)
Net decrease in cash and due from banks	(7)	(50)
Cash and due from banks at beginning of period	716	657
Cash and due from banks at end of period	709	607
Cash paid for interest	491	224
Net cash paid for income taxes	0	0
Noncash activities:
Loans held for investment reclassified to loans held for sale, net	$ 12	$ 47