CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) - USD ($) $ in Millions		9 Months Ended
		Sep. 30, 2025	Sep. 30, 2024
OPERATING ACTIVITIES
Net income		$ 1,303	$ 1,108
Adjustments to reconcile net income to net change due to operating activities:
Provision (benefit) for credit losses		471	525
Net change in Loans held for sale		(81)	62
Depreciation, amortization, and accretion		366	374
Deferred income tax expense (benefit)		(93)	(50)
Share-based compensation		97	76
Net gain on sale of assets		(16)	(14)
Net (increase) decrease in Other assets		357	(14)
Net increase (decrease) in Other liabilities		(35)	(549)
Net change due to operating activities		2,369	1,518
Investment securities:
Purchases of debt securities available for sale		(5,545)	(6,497)
Proceeds from maturities and paydowns of debt securities available for sale		2,770	2,112
Proceeds from sales of debt securities available for sale		1,218	2,080
Proceeds from maturities and paydowns of debt securities held to maturity		537	501
Net (increase) decrease in Interest-bearing deposits in banks		(59)	(243)
Purchases of loans		(642)	(517)
Sales of loans		1,428	186
Net (increase) decrease in Loans and leases		(3,475)	3,860
Capital expenditures, net		(82)	(74)
Other		(183)	(29)
Net change due to investing activities		(4,033)	1,379
FINANCING ACTIVITIES
Net increase (decrease) in Deposits		5,235	(2,154)
Net increase (decrease) in Short-term borrowed funds		214	(490)
Proceeds from issuance of long-term borrowed funds		6,534	13,185
Repayments of long-term borrowed funds		(8,520)	(12,741)
Treasury stock purchased		(475)	(825)
Net proceeds from issuance of preferred stock		393	391
Redemption of preferred stock		0	(300)
Dividends paid to common stockholders		(555)	(581)
Dividends paid to preferred stockholders		(100)	(96)
Other		(13)	1
Net change due to financing activities		2,713	(3,610)
Net change in cash and cash equivalents	[1]	1,049	(713)
Cash and cash equivalents at beginning of period	[1]	10,601	11,628
Cash and cash equivalents at end of period	[1]	11,650	10,915
Non-cash items:
Transfer of loans from loans held for investment to LHFS		1,939	249
Loans securitized and transferred to AFS securities		$ 87	$ 181

[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.