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	$ 2,112	$ 1,935	$ 2,050
Interest on money market investments	81	21	14
Interest on securities	512	311	304
Total interest income	2,705	2,267	2,368
Interest expense:
Interest on deposits	70	30	105
Interest on short- and long-term borrowings	115	29	47
Total interest expense	185	59	152
Net interest income	2,520	2,208	2,216
Provision for loan losses	101	(258)	385
Provision for unfunded lending commitments	21	(18)	29
Total provision for credit losses	122	(276)	414
Net interest income after provision for credit losses	2,398	2,484	1,802
Noninterest income:
Commercial account fees	159	137	132
Card fees	104	95	82
Retail and business banking fees	73	74	68
Loan-related fees and income	80	95	109
Capital markets and foreign exchange fees	83	70	70
Wealth management fees	55	50	44
Other customer-related fees	60	54	44
Customer-related noninterest income	614	575	549
Fair value and nonhedge derivative income (loss)	16	14	(6)
Dividends and other income	17	43	24
Securities gains (losses), net	(15)	71	7
Total noninterest income	632	703	574
Noninterest expense:
Salaries and employee benefits	1,235	1,127	1,087
Technology, telecom, and information processing	209	199	192
Occupancy and equipment, net	152	153	151
Professional and legal services	57	72	57
Marketing and business development	39	43	61
Deposit insurance and regulatory expense	50	34	33
Credit-related expense	30	26	22
Other real estate expense, net	1	0	1
Other	105	87	100
Total noninterest expense	1,878	1,741	1,704
Income before income taxes	1,152	1,446	672
Income taxes	245	317	133
Net income	907	1,129	539
Preferred stock dividends	(29)	(29)	(34)
Net earnings applicable to common shareholders	$ 878	$ 1,100	$ 505
Weighted average common shares outstanding during the year:
Basic shares (in shares)	150,064	159,913	163,737
Diluted shares (in shares)	150,271	160,234	165,613
Net earnings per common share:
Basic (in dollars per share)	$ 5.80	$ 6.80	$ 3.06
Diluted (in dollars per share)	$ 5.79	$ 6.79	$ 3.02