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Reportable Operating Segments - Selected Business Segment Financial Information (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2024 | Sep. 30, 2023
Selected business segment financial information |  |  |  |
Net interest income (expense) | $ 156,707 | $ 157,148 | $ 463,985 | $ 484,334
(Provision) benefit for credit losses | (7,400) | (7,500) | (15,500) | (21,300)
Net interest income after provision for credit losses | 149,307 | 149,648 | 448,485 | 463,034
Noninterest income | 53,288 | 46,097 | 156,427 | 142,468
Noninterest expense | (126,147) | (119,383) | (377,046) | (358,831)
Income before provision for income taxes | 76,448 | 76,362 | 227,866 | 246,671
(Provision) benefit for income taxes | (14,956) | (18,141) | (50,233) | (59,190)
Net income | 61,492 | 58,221 | 177,633 | 187,481
Retail Banking |  |  |  |
Selected business segment financial information |  |  |  |
Net interest income (expense) | 126,335 | 119,070 | 379,088 | 332,227
(Provision) benefit for credit losses | (3,390) | (2,359) | (8,294) | (6,913)
Net interest income after provision for credit losses | 122,945 | 116,711 | 370,794 | 325,314
Noninterest income | 26,585 | 24,834 | 78,916 | 72,898
Noninterest expense | (73,016) | (77,873) | (222,281) | (231,313)
Income before provision for income taxes | 76,514 | 63,672 | 227,429 | 166,899
(Provision) benefit for income taxes | (18,519) | (15,209) | (55,070) | (39,836)
Net income | 57,995 | 48,463 | 172,359 | 127,063
Commercial Banking |  |  |  |
Selected business segment financial information |  |  |  |
Net interest income (expense) | 47,222 | 45,913 | 137,622 | 128,348
(Provision) benefit for credit losses | (3,726) | (3,565) | (9,114) | (10,447)
Net interest income after provision for credit losses | 43,496 | 42,348 | 128,508 | 117,901
Noninterest income | 21,666 | 18,858 | 58,247 | 55,832
Noninterest expense | (21,691) | (24,976) | (69,999) | (79,832)
Income before provision for income taxes | 43,471 | 36,230 | 116,756 | 93,901
(Provision) benefit for income taxes | (9,325) | (8,334) | (25,017) | (21,546)
Net income | 34,146 | 27,896 | 91,739 | 72,355
Treasury and Other |  |  |  |
Selected business segment financial information |  |  |  |
Net interest income (expense) | (16,850) | (7,835) | (52,725) | 23,759
(Provision) benefit for credit losses | (284) | (1,576) | 1,908 | (3,940)
Net interest income after provision for credit losses | (17,134) | (9,411) | (50,817) | 19,819
Noninterest income | 5,037 | 2,405 | 19,264 | 13,738
Noninterest expense | (31,440) | (16,534) | (84,766) | (47,686)
Income before provision for income taxes | (43,537) | (23,540) | (116,319) | (14,129)
(Provision) benefit for income taxes | 12,888 | 5,402 | 29,854 | 2,192
Net income | $ (30,649) | $ (18,138) | $ (86,465) | $ (11,937)

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