Consolidated Statements of Income - USD ($) shares in Thousands, $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Interest income
Interest and fees on loans and leases	$ 2,292	$ 1,957	$ 1,722
Interest and fees on loans held for sale	39	33	30
Interest on investment securities	198	121	105
Interest on trading securities	58	30	35
Interest on other earning assets	96	17	6
Total interest income	2,683	2,158	1,898
Interest expense:
Interest on deposits	184	81	152
Interest on trading liabilities	12	6	6
Interest on short-term borrowings	23	5	14
Interest on term borrowings	72	72	64
Total interest expense	291	164	236
Net interest income	2,392	1,994	1,662
Provision for credit losses	95	(310)	503
Net interest income after provision for credit losses	2,297	2,304	1,159
Noninterest income
Fixed income	205	406	423
Deposit transactions and cash management	171	175	148
Brokerage, management fees and commissions	92	88	66
Card and digital banking fees	84	78	60
Mortgage banking and title income	68	154	129
Other service charges and fees	54	44	26
Trust services and investment management	48	51	39
Securities gains (losses), net	18	13	(6)
Purchase accounting gain	0	(1)	533
Other income	75	68	74
Total noninterest income	815	1,076	1,492
Noninterest expense
Personnel expense	1,101	1,210	1,033
Net occupancy expense	128	137	116
Computer software	113	116	85
Operations services	87	80	56
Legal and professional fees	62	68	84
Contract employment and outsourcing	54	67	24
Amortization of intangible assets	51	56	40
Advertising and public relations	50	37	18
Equipment expense	45	47	42
Communications and delivery	37	37	31
Contributions	7	14	41
Impairment of long-lived assets	0	34	7
Other expense	218	193	141
Total noninterest expense	1,953	2,096	1,718
Income before income taxes	1,159	1,284	933
Income tax expense	247	274	76
Net income (loss)	912	1,010	857
Net income attributable to noncontrolling interest	12	11	12
Net income attributable to controlling interest	900	999	845
Preferred stock dividends	32	37	23
Net income available to common shareholders	868	962	822
Net income available to common shareholders	$ 868	$ 962	$ 822
Basic earnings per share (in dollars per share)	$ 1.62	$ 1.76	$ 1.90
Diluted earnings per share (in dollars per share)	$ 1.53	$ 1.74	$ 1.89
Weighted average common shares (in shares)	535,033	546,354	432,125
Diluted average common shares (in shares)	566,004	551,241	433,717