CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Interest income on:
Loans, including fees	$ 5,463	$ 5,732	$ 5,733
Debt securities	1,145	925	749
Loans held for sale	35	39	40
Other earning assets	430	412	375
Total interest income	7,073	7,108	6,897
Interest expense on:
Deposits	1,766	1,971	1,255
Short-term borrowings	17	40	96
Long-term borrowings	299	279	226
Total interest expense	2,082	2,290	1,577
Net interest income	4,991	4,818	5,320
Provision for credit losses	470	487	553
Net interest income after provision for credit losses	4,521	4,331	4,767
Non-interest income:
Total Noninterest Income	2,535	2,265	2,256
Non-interest expense:
Salaries and employee benefits	2,616	2,529	2,416
Equipment and software expense	421	406	412
Net occupancy expense	$ 288	278	289
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) Excluding Service Cost, Statement of Income or Comprehensive Income [Extensible Enumeration]	Other
Other	$ 988	1,029	1,299
Total non-interest expense	4,313	4,242	4,416
Income before income taxes	2,743	2,354	2,607
Income tax expense	587	461	533
Net income	2,156	1,893	2,074
Net income available to common shareholders	$ 2,061	$ 1,774	$ 1,976
Weighted Average Number of Shares Outstanding, Diluted [Abstract]
Basic	892	916	936
Diluted	896	918	938
Earnings Per Share [Abstract]
Basic	$ 2.31	$ 1.94	$ 2.11
Diluted	$ 2.30	$ 1.93	$ 2.11
Service charges on deposit accounts
Non-interest income:
Total Noninterest Income	$ 635	$ 612	$ 592
Card and ATM fees
Non-interest income:
Total Noninterest Income	487	467	504
Investment management and trust fee income
Non-interest income:
Total Noninterest Income	362	338	313
Capital Markets [Member]
Non-interest income:
Total Noninterest Income	347	348	222
Mortgage income
Non-interest income:
Total Noninterest Income	158	146	109
Securities gains, net [Member]
Non-interest income:
Total Noninterest Income	(53)	(208)	(5)
Other [Member]
Non-interest income:
Total Noninterest Income	$ 599	$ 562	$ 521

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Operating activities:
Net income	$ 2,156	$ 1,893	$ 2,074
Adjustments to reconcile net income to net cash from operating activities:
Provision for credit losses	470	487	553
Depreciation, amortization and accretion, net	84	144	236
Securities (gains) losses, net	53	208	5
Deferred income tax expense	78	21	32
Originations and purchases of loans held for sale	(5,453)	(6,487)	(4,496)
Proceeds from sales of loans held for sale	5,566	6,297	4,440
(Gain) loss on sale of loans, net	(84)	(49)	(45)
Early extinguishment of debt	0	0	(4)
Net change in operating assets and liabilities:
Other earning assets	(87)	(199)	(109)
Interest receivable and other assets	251	(831)	194
Other liabilities	(896)	3	(659)
Other	43	111	87
Net cash from operating activities	2,181	1,598	2,308
Investing activities:
Proceeds from maturities of debt securities held to maturity	684	105	47
Proceeds from sales of debt securities available for sale	1,333	5,001	70
Proceeds from maturities of debt securities available for sale	3,289	3,225	2,930
Purchases of debt securities available for sale	(7,262)	(9,612)	(2,610)
Net (payments for) proceeds from bank-owned life insurance	5	16	(5)
Proceeds from sales of loans	755	160	485
Purchases of loans	(370)	(648)	(426)
Net change in loans	333	1,811	(1,755)
Purchases of mortgage servicing rights	(30)	(146)	(157)
Net purchases of other assets	(155)	(174)	(186)
Net cash from investing activities	(1,418)	(262)	(1,607)
Financing activities:
Net change in deposits	3,525	(185)	(3,955)
Net change in short-term borrowings	250	500	0
Proceeds from long-term borrowings	0	3,740	2,000
Payments on long-term borrowings	(1,900)	(100)	(2,000)
Cash dividends on common stock	(912)	(890)	(787)
Cash dividends on preferred stock	(91)	(104)	(98)
Proceeds from Issuance of Preferred Stock and Preference Stock	0	(489)	0
Payments for Repurchase of Redeemable Preferred Stock	(350)	(500)	0
Repurchases of common stock	(1,067)	(348)	(252)
Taxes paid related to net share settlement of equity awards	(23)	(27)	(35)
Net cash from financing activities	(568)	2,575	(5,127)
Net change in cash and cash equivalents	195	3,911	(4,426)
Cash and cash equivalents at beginning of year	10,712	6,801	11,227
Cash and cash equivalents at end of year	$ 10,907	$ 10,712	$ 6,801

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024
Assets
Cash and due from banks	$ 3,112	$ 2,893
Interest-bearing deposits in other banks	7,795	7,819
Debt Securities held to maturity	5,606	4,427
Debt securities available for sale	27,560	26,224
Loans held for sale	511	594
Loans, net of unearned income	95,637	96,727
Allowance for loan losses	(1,556)	(1,613)
Net loan losses	94,081	95,114
Other earning assets	1,703	1,616
Premises, equipment and software, net	1,659	1,673
Interest receivable	571	572
Goodwill	5,733	5,733
Servicing Asset at Fair Value, Amount	970	1,007
Other identifiable intangible assets, net	140	169
Other assets	9,373	9,461
Total assets	158,814	157,302
Deposits:
Noninterest-bearing Deposit Liabilities	39,530	39,138
Interest-bearing	91,598	88,465
Total deposits	131,128	127,603
Borrowed funds:
Short-term borrowings	750	500
Long-term borrowings	4,134	5,993
Total borrowed funds	4,884	6,493
Other liabilities	3,699	5,296
Total liabilities	139,711	139,392
Equity:
Preferred stock	1,369	1,715
Common stock	9	9
Additional paid-in capital	10,366	11,394
Retained earnings	10,205	9,060
Treasury stock, at cost	(1,371)	(1,371)
Accumulated other comprehensive income (loss), net	(1,535)	(2,928)
Total shareholders’ equity	19,043	17,879
Noncontrolling interest	60	31
Total equity	19,103	17,910
Total liabilities and equity	$ 158,814	$ 157,302