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Condensed Financial Information Parent Company Statement of Operations (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Salaries and employee benefits | $ 2,416 | $ 2,318 | $ 2,205
Interest expense | 1,577 | 316 | 167
Equipment and Software Expense | 412 | 392 | 365
Income before income taxes | 2,607 | 2,876 | 3,215
Income tax expense (benefit) | 533 | 631 | 694
Net income | 2,074 | 2,245 | 2,521
Preferred stock dividends | (98) | (99) | (108)
Net income available to common shareholders | 1,976 | 2,146 | 2,400
Parent Company [Member] |  |  |
Cash Dividends Paid to Parent Company by Consolidated Subsidiaries | 1,609 | 1,351 | 2,250
Interest Income | 1 | 4 | 8
Other Income | 7 | (3) | 22
Total Revenues | 1,617 | 1,352 | 2,280
Salaries and employee benefits | 65 | 64 | 61
Interest expense | 134 | 86 | 68
Equipment and Software Expense | (2) | 4 | 4
Other Expenses | 70 | 62 | 96
Operating Expenses | 267 | 216 | 229
Income before income taxes | 1,350 | 1,136 | 2,051
Income tax expense (benefit) | (43) | (36) | (43)
Income Loss Before Equity In Undistributed Earnings Loss Of Subsidiaries And Preferred Dividends | 1,393 | 1,172 | 2,094
Equity In Undistributed Earnings Of Subsidiaries | 681 | 1,073 | 427
Net income | 2,074 | 2,245 | 2,521
Preferred stock dividends | (98) | (99) | (121)
Net income available to common shareholders | 1,976 | 2,146 | 2,400
Bank [Member] | Parent Company [Member] |  |  |
Equity In Undistributed Earnings Of Subsidiaries | 644 | 1,066 | 372
Non-Bank [Member] | Parent Company [Member] |  |  |
Equity In Undistributed Earnings Of Subsidiaries | $ 37 | $ 7 | $ 55

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