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Reportable Operating Segments - Selected Business Segment Financial Information (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2024 | Jun. 30, 2023
Selected business segment financial information |  |  |  |
Net interest income (expense) | $ 152,851 | $ 159,939 | $ 307,278 | $ 327,186
(Provision) benefit for credit losses | (1,800) | (5,000) | (8,100) | (13,800)
Net interest income after provision for credit losses | 151,051 | 154,939 | 299,178 | 313,386
Noninterest income | 51,768 | 47,348 | 103,139 | 96,371
Noninterest expense | (122,086) | (120,881) | (250,899) | (239,448)
Income before provision for income taxes | 80,733 | 81,406 | 151,418 | 170,309
(Provision) benefit for income taxes | (18,812) | (18,964) | (35,277) | (41,049)
Net income | 61,921 | 62,442 | 116,141 | 129,260
Retail Banking |  |  |  |
Selected business segment financial information |  |  |  |
Net interest income (expense) | 124,696 | 104,237 | 252,753 | 213,157
(Provision) benefit for credit losses | (1,525) | (1,991) | (4,904) | (4,554)
Net interest income after provision for credit losses | 123,171 | 102,246 | 247,849 | 208,603
Noninterest income | 26,296 | 23,797 | 52,331 | 48,064
Noninterest expense | (72,625) | (77,597) | (149,265) | (153,440)
Income before provision for income taxes | 76,842 | 48,446 | 150,915 | 103,227
(Provision) benefit for income taxes | (18,623) | (11,361) | (36,551) | (24,627)
Net income | 58,219 | 37,085 | 114,364 | 78,600
Commercial Banking |  |  |  |
Selected business segment financial information |  |  |  |
Net interest income (expense) | 45,019 | 41,496 | 90,400 | 82,435
(Provision) benefit for credit losses | (1,675) | (3,009) | (5,388) | (6,882)
Net interest income after provision for credit losses | 43,344 | 38,487 | 85,012 | 75,553
Noninterest income | 18,623 | 19,086 | 36,581 | 36,974
Noninterest expense | (22,623) | (27,086) | (48,308) | (54,856)
Income before provision for income taxes | 39,344 | 30,487 | 73,285 | 57,671
(Provision) benefit for income taxes | (8,419) | (6,882) | (15,692) | (13,212)
Net income | 30,925 | 23,605 | 57,593 | 44,459
Treasury and Other |  |  |  |
Selected business segment financial information |  |  |  |
Net interest income (expense) | (16,864) | 14,206 | (35,875) | 31,594
(Provision) benefit for credit losses | 1,400 |  | 2,192 | (2,364)
Net interest income after provision for credit losses | (15,464) | 14,206 | (33,683) | 29,230
Noninterest income | 6,849 | 4,465 | 14,227 | 11,333
Noninterest expense | (26,838) | (16,198) | (53,326) | (31,152)
Income before provision for income taxes | (35,453) | 2,473 | (72,782) | 9,411
(Provision) benefit for income taxes | 8,230 | (721) | 16,966 | (3,210)
Net income | $ (27,223) | $ 1,752 | $ (55,816) | $ 6,201

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