Other Noninterest Income and Other Noninterest Expense (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Other noninterest income:
BOLI income	$ 61	$ 64	$ 61
Cardholder fees	56	54	50
Equity method investment income	52	22	30
Private equity investment income	44	70	81
Banking center income	25	24	23
Income from the TRA associated with Worldpay, Inc.	22	46	46
Consumer loan fees	20	19	17
Gains on contract sales	2	3	62
Loss on swap associated with the sale of Visa, Inc. Class B Shares	(94)	(84)	(86)
Other, net	19	47	48
Total other noninterest income	207	265	332
Other noninterest expense:
FDIC insurance and other taxes	385	132	114
Loan and lease	133	167	217
Losses and adjustments	91	91	69
Data processing	87	82	79
Dues and subscriptions	61	58	55
Travel	56	60	34
Professional service fees	53	54	63
Securities recordkeeping	50	48	52
Cash and coin processing	48	44	39
Postal and courier	46	40	37
Intangible amortization	43	47	44
Other, net	184	145	148
Total other noninterest expense	$ 1,237	$ 968	$ 951