Other Noninterest Income and Other Noninterest Expense (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Other noninterest income:
BOLI income		$ 66	$ 61	$ 64
Private equity investment income		35	44	70
Equity method investment income		18	52	22
Income from the TRA associated with Worldpay, Inc.		11	22	46
Gains (losses) on sales of businesses		7	0	(7)
Loss on swap associated with the sale of Visa, Inc. Class B Shares		(138)	(94)	(84)
Other, net		13	6	38
Total other noninterest income		12	91	149
Other noninterest expense:
FDIC insurance and other taxes		181	385	132
Leasing business expense		92	121	131
Losses and adjustments		86	91	91
Data processing		81	87	82
Dues and subscriptions		61	61	58
Travel		60	56	60
Professional service fees		49	53	54
Securities recordkeeping		55	50	48
Cash and coin processing		47	48	44
Intangible amortization		35	43	47
Postal and courier		48	46	40
Other, net		178	184	145
Total other noninterest expense	[1]	$ 973	$ 1,225	$ 932

[1] During the fourth quarter of 2024, certain noninterest income and noninterest expense line items were reclassified to better align disclosures to business activities. These reclassifications were retrospectively applied to all prior periods presented. Total noninterest income and noninterest expense did not change as a result of these reclassifications. Refer to Note 1 for additional information.