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Business Segments - Schedule of Operating Results and Other Key Financial Measures for The Individual Operating Segments (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024 | Dec. 31, 2024
Segment Reporting Information |  |  |  |  |
Net interest income (loss) before provision for (reversal of) credit losses | $ 677,530 | $ 572,722 | $ 1,894,805 | $ 1,691,090 |
Noninterest income | 100,517 | 84,395 | 278,797 | 247,053 |
Total revenue before provision for (reversal of ) credit losses | 778,047 | 657,117 | 2,173,602 | 1,938,143 |
Provision for (reversal of) credit losses | 36,000 | 42,000 | 130,000 | 104,000 |
Compensation and employee benefits | 175,585 | 135,464 | 466,861 | 410,864 |
Other noninterest expense | 101,338 | 90,336 | 318,230 | 297,242 |
Total noninterest expense | 276,923 | 225,800 | 785,091 | 708,106 |
INCOME BEFORE INCOME TAXES | 465,124 | 389,317 | 1,258,511 | 1,126,037 |
Segment net income | 368,394 | 299,166 | 968,917 | 872,471 |
Loans | 55,208,578 | 52,420,516 | 54,282,760 | 52,089,261 |
Deposits | 66,189,767 | 60,585,256 | 64,181,406 | 58,908,960 |
Segment assets | 79,669,531 | 74,483,720 | 79,669,531 | 74,483,720 | $ 75,976,475
Consumer and Business Banking |  |  |  |  |
Segment Reporting Information |  |  |  |  |
Net interest income (loss) before provision for (reversal of) credit losses | 275,389 | 290,884 | 818,195 | 880,316 |
Noninterest income | 31,191 | 27,970 | 91,205 | 80,288 |
Total revenue before provision for (reversal of ) credit losses | 306,580 | 318,854 | 909,400 | 960,604 |
Provision for (reversal of) credit losses | 16,679 | 5,927 | 31,139 | 5,246 |
Compensation and employee benefits | 60,471 | 53,865 | 180,585 | 161,557 |
Other noninterest expense | 57,695 | 58,141 | 172,140 | 176,279 |
Total noninterest expense | 118,166 | 112,006 | 352,725 | 337,836 |
INCOME BEFORE INCOME TAXES | 171,735 | 200,921 | 525,536 | 617,522 |
Segment net income | 123,347 | 141,532 | 374,730 | 434,992 |
Loans | 20,500,553 | 19,048,831 | 20,151,497 | 18,817,573 |
Deposits | 33,883,506 | 31,462,739 | 32,992,699 | 30,406,431 |
Segment assets | 21,078,748 | 19,650,183 | 21,078,748 | 19,650,183 |
Commercial Banking |  |  |  |  |
Segment Reporting Information |  |  |  |  |
Net interest income (loss) before provision for (reversal of) credit losses | 265,935 | 288,704 | 773,080 | 855,607 |
Noninterest income | 57,983 | 45,577 | 161,313 | 141,634 |
Total revenue before provision for (reversal of ) credit losses | 323,918 | 334,281 | 934,393 | 997,241 |
Provision for (reversal of) credit losses | 35,580 | 36,934 | 115,083 | 99,996 |
Compensation and employee benefits | 62,282 | 57,582 | 181,061 | 175,881 |
Other noninterest expense | 36,413 | 36,020 | 114,784 | 120,371 |
Total noninterest expense | 98,695 | 93,602 | 295,845 | 296,252 |
INCOME BEFORE INCOME TAXES | 189,643 | 203,745 | 523,465 | 600,993 |
Segment net income | 136,267 | 143,218 | 373,499 | 423,407 |
Loans | 34,408,431 | 32,975,235 | 33,800,162 | 32,854,843 |
Deposits | 28,027,523 | 26,310,972 | 26,832,722 | 25,667,059 |
Segment assets | 36,867,668 | 35,714,691 | 36,867,668 | 35,714,691 |
Treasury and Other |  |  |  |  |
Segment Reporting Information |  |  |  |  |
Net interest income (loss) before provision for (reversal of) credit losses | 136,206 | (6,866) | 303,530 | (44,833) |
Noninterest income | 11,343 | 10,848 | 26,279 | 25,131 |
Total revenue before provision for (reversal of ) credit losses | 147,549 | 3,982 | 329,809 | (19,702) |
Provision for (reversal of) credit losses | (16,259) | (861) | (16,222) | (1,242) |
Compensation and employee benefits | 52,832 | 24,017 | 105,215 | 73,426 |
Other noninterest expense | 7,230 | (3,825) | 31,306 | 592 |
Total noninterest expense | 60,062 | 20,192 | 136,521 | 74,018 |
INCOME BEFORE INCOME TAXES | 103,746 | (15,349) | 209,510 | (92,478) |
Segment net income | 108,780 | 14,416 | 220,688 | 14,072 |
Loans | 299,594 | 396,450 | 331,101 | 416,845 |
Deposits | 4,278,738 | 2,811,545 | 4,355,985 | 2,835,470 |
Segment assets | $ 21,723,115 | $ 19,118,846 | $ 21,723,115 | $ 19,118,846 |

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