CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2025	Mar. 31, 2024
OPERATING ACTIVITIES
Net income		$ 373	$ 334
Adjustments to reconcile net income to net change due to operating activities:
Provision (benefit) for credit losses		153	171
Net change in loans held for sale		(332)	171
Depreciation, amortization and accretion		123	102
Deferred income tax expense (benefit)		(16)	0
Share-based compensation		31	34
Net gain on sale of assets		(9)	(5)
Net (increase) decrease in other assets		34	(47)
Net increase (decrease) in other liabilities		(570)	(206)
Net change due to operating activities		(213)	554
Investment securities:
Purchases of debt securities available for sale		(2,365)	(3,057)
Proceeds from maturities and paydowns of debt securities available for sale		846	593
Proceeds from sales of debt securities available for sale		642	692
Proceeds from maturities and paydowns of debt securities held to maturity		150	150
Net (increase) decrease in interest-bearing deposits in banks		(50)	13
Purchases of loans		(188)	(345)
Sales of loans		240	107
Net (increase) decrease in loans and leases		(319)	2,873
Capital expenditures, net		(14)	(10)
Other		(50)	23
Net change due to investing activities		(1,108)	1,039
FINANCING ACTIVITIES
Net increase (decrease) in deposits		2,800	(914)
Net increase (decrease) in short-term borrowed funds		47	(496)
Proceeds from issuance of long-term borrowed funds		2,533	5,765
Repayments of long-term borrowed funds		(2,675)	(5,437)
Treasury stock purchased		(200)	(300)
Dividends paid to common stockholders		(186)	(197)
Dividends paid to preferred stockholders		(34)	(31)
Other		(24)	(12)
Net change due to financing activities		2,261	(1,622)
Net change in cash and cash equivalents	[1]	940	(29)
Cash and cash equivalents at beginning of period	[1]	10,601	11,628
Cash and cash equivalents at end of period	[1]	11,541	11,599
Non-cash items:
Transfer of loans from loans held for investment to LHFS		$ 1,876	$ 107

[1] Cash and cash equivalents include cash and due from banks and interest-bearing cash and due from banks as reflected on the Consolidated Balance Sheets.