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Parent Company - Condensed Statements of Income and Comprehensive Income (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Non-interest revenues |  |  |
Total non-interest revenues | $ 47,381 | $ 42,967 | $ 34,630
Interest income | 19,983 | 12,658 | 9,033
Interest expense | 6,849 | 2,763 | 1,283
Total revenues net of interest expense | 60,515 | 52,862 | 42,380
Expenses |  |  |
Salaries and employee benefits | 8,067 | 7,252 | 6,240
Other | 6,807 | 6,481 | 4,817
Total expenses | 45,079 | 41,095 | 33,110
Income tax benefit | 2,139 | 2,071 | 2,629
Net income | 8,374 | 7,514 | 8,060
Net unrealized pension and other postretirement benefits, net of tax | 37 | 52 | 155
Comprehensive income | 8,512 | 7,249 | 8,010
Parent Company |  |  |
Non-interest revenues |  |  |
Other | 407 | 388 | 343
Total non-interest revenues | 407 | 388 | 343
Interest income | 1,558 | 614 | 96
Interest expense | 1,436 | 857 | 482
Total revenues net of interest expense | 529 | 145 | (43)
Expenses |  |  |
Salaries and employee benefits | 487 | 408 | 359
Other | 408 | 372 | 346
Total expenses | 895 | 780 | 705
Loss before income tax and equity in net income of subsidiaries | (366) | (635) | (748)
Income tax benefit | (163) | (244) | (248)
Equity in net income of subsidiaries and affiliates | 8,577 | 7,905 | 8,560
Net income | 8,374 | 7,514 | 8,060
Net unrealized pension and other postretirement benefits, net of tax | 5 | 10 | 151
Other comprehensive income (loss), net | 133 | (275) | (201)
Comprehensive income | $ 8,512 | $ 7,249 | $ 8,010

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