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Business Segments - Operating Results and Other Key Financial Measures (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Segment Reporting Information |  |  |
Net interest income before (reversal of) provision for credit losses | $ 2,312,254 | $ 2,045,881 | $ 1,531,571
(Reversal of) provision for credit losses | 125,000 | 73,500 | (35,000)
Noninterest income | 295,264 | 298,666 | 285,895
Noninterest expense | 1,022,748 | 859,393 | 796,089
INCOME BEFORE INCOME TAXES | 1,459,770 | 1,411,654 | 1,056,377
Segment net income | 1,161,161 | 1,128,083 | 872,981
Segment assets | 69,612,884 | 64,112,150 | 60,870,701
Consumer and Business Banking |  |  |
Segment Reporting Information |  |  |
Net interest income before (reversal of) provision for credit losses | 1,238,829 | 1,170,850 | 697,101
(Reversal of) provision for credit losses | 18,422 | 27,197 | (4,998)
Noninterest income | 102,109 | 110,139 | 94,125
Noninterest expense | 477,622 | 397,882 | 364,635
INCOME BEFORE INCOME TAXES | 844,894 | 855,910 | 431,589
Segment net income | 596,366 | 608,120 | 308,630
Segment assets | 19,510,836 | 17,385,804 | 14,961,809
Commercial Banking |  |  |
Segment Reporting Information |  |  |
Net interest income before (reversal of) provision for credit losses | 992,519 | 892,386 | 766,202
(Reversal of) provision for credit losses | 106,578 | 46,303 | (30,002)
Noninterest income | 174,465 | 179,248 | 163,768
Noninterest expense | 382,865 | 314,185 | 275,649
INCOME BEFORE INCOME TAXES | 677,541 | 711,146 | 684,323
Segment net income | 478,418 | 507,467 | 489,233
Segment assets | 35,095,237 | 33,042,785 | 28,556,706
Other |  |  |
Segment Reporting Information |  |  |
Net interest income before (reversal of) provision for credit losses | 80,906 | (17,355) | 68,268
(Reversal of) provision for credit losses | 0 | 0 | 0
Noninterest income | 18,690 | 9,279 | 28,002
Noninterest expense | 162,261 | 147,326 | 155,805
INCOME BEFORE INCOME TAXES | (62,665) | (155,402) | (59,535)
Segment net income | 86,377 | 12,496 | 75,118
Segment assets | $ 15,006,811 | $ 13,683,561 | $ 17,352,186

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- Definition Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. 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