Consolidated Statements of Income - USD ($) shares in Thousands, $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Interest income
Interest and fees on loans and leases	$ 3,698	$ 3,874	$ 3,575
Interest and fees on loans held for sale	34	36	51
Interest on investment securities	282	241	247
Interest on trading securities	91	85	78
Interest on other earning assets	81	116	149
Total interest income	4,186	4,352	4,100
Interest expense:
Interest on deposits	1,339	1,620	1,266
Interest on trading liabilities	26	24	12
Interest on short-term borrowings	121	130	210
Interest on term borrowings	78	67	72
Total interest expense	1,564	1,841	1,560
Net interest income	2,622	2,511	2,540
Provision for credit losses	65	150	260
Net interest income after provision for credit losses	2,557	2,361	2,280
Noninterest income
Fixed income	206	187	133
Deposit transactions and cash management	169	176	179
Brokerage, management fees and commissions	105	101	90
Card and digital banking fees	74	77	77
Other service charges and fees	60	51	54
Trust services and investment management	51	48	47
Mortgage banking income	43	35	23
Gain on merger termination	0	0	225
Securities gains (losses), net	1	(89)	(4)
Other income	88	93	103
Total noninterest income	797	679	927
Noninterest expense
Personnel expense	1,159	1,137	1,100
Net occupancy expense	139	130	123
Computer software	138	121	111
Operations services	96	94	87
Legal and professional fees	86	64	49
Advertising and public relations	54	48	71
Deposit insurance expense	42	64	122
Contract employment and outsourcing	38	51	49
Amortization of intangible assets	38	44	47
Contributions	26	18	61
Other expense	258	264	259
Total noninterest expense	2,074	2,035	2,079
Income before income taxes	1,280	1,005	1,128
Income tax expense	282	211	212
Net income (loss)	998	794	916
Net income attributable to noncontrolling interest	16	19	19
Net income attributable to controlling interest	982	775	897
Preferred stock dividends	26	37	32
Net income available to common shareholders	956	738	865
Net income available to common shareholders	$ 956	$ 738	$ 865
Basic earnings per share (in dollars per share)	$ 1.89	$ 1.37	$ 1.58
Diluted earnings per share (in dollars per share)	$ 1.87	$ 1.36	$ 1.54
Weighted average common shares (in shares)	505,130	540,317	548,410
Diluted average common shares (in shares)	511,107	544,285	561,732