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Accumulated Other Comprehensive Income (Loss) - Schedule Of Components Of Other Comprehensive Income (Loss), Reclassifications To Net Income And The Related Tax Effects (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024
Before-Tax |  |  |  |
Net change | $ 110,520 | $ 308,347 | $ 297,168 | $ 259,725
Tax Effect |  |  |  |
Net change | (23,697) | (91,478) | (87,465) | (76,433)
Net-of-Tax |  |  |  |
Amortization of unrealized losses on transferred securities | 4,102 | 2,765 | 8,015 | 8,161
Net unrealized (losses) gains arising during the period | 76,479 | 197,109 | 187,037 | 124,771
Net realized losses reclassified into net income | 10,344 | 19,760 | 22,666 | 58,521
Other comprehensive income | 86,823 | 216,869 | 209,703 | 183,292
Debt Securities |  |  |  |
Before-Tax |  |  |  |
Net unrealized gains arising during the period | 98,241 | 187,578 | 211,737 | 196,717
Net realized losses (gains) on AFS debt securities reclassified into net income | 2,943 | (145) | 2,066 | (1,979)
Amortization of unrealized losses on transferred securities | 3,785 | 3,926 | 11,379 | 11,587
Net change | 104,969 | 191,359 | 225,182 | 206,325
Tax Effect |  |  |  |
Net unrealized gains arising during the period | (21,481) | (55,448) | (62,674) | (58,096)
Net realized losses (gains) on AFS debt securities reclassified into net income | (858) | 43 | (611) | 585
Amortization of unrealized losses on transferred securities | 317 | (1,161) | (3,364) | (3,426)
Net change | (22,022) | (56,566) | (66,649) | (60,937)
Net-of-Tax |  |  |  |
Net unrealized gains arising during the period | 76,760 | 132,130 | 149,063 | 138,621
Net realized losses (gains) on AFS debt securities reclassified into net income | 2,085 | (102) | 1,455 | (1,394)
Amortization of unrealized losses on transferred securities | 4,102 | 2,765 | 8,015 | 8,161
Net unrealized (losses) gains arising during the period | 76,760 | 132,130 | 149,063 | 138,621
Net realized losses reclassified into net income | 6,187 | 2,663 | 9,470 | 6,767
Other comprehensive income | 82,947 | 134,793 | 158,533 | 145,388
Cash Flow Hedges |  |  |  |
Before-Tax |  |  |  |
Net unrealized (losses) gains arising during the period | (2,658) | 93,842 | 53,536 | (21,629)
Net realized losses reclassified into net income | 6,001 | 24,272 | 18,584 | 73,471
Net change | 3,343 | 118,114 | 72,120 | 51,842
Tax Effect |  |  |  |
Net unrealized (losses) gains arising during the period | 303 | (27,737) | (15,521) | 6,394
Net realized losses reclassified into net income | (1,844) | (7,175) | (5,388) | (21,717)
Net change | (1,541) | (34,912) | (20,909) | (15,323)
Net-of-Tax |  |  |  |
Net unrealized (losses) gains arising during the period | (2,355) | 66,105 | 38,015 | (15,235)
Net realized losses reclassified into net income | 4,157 | 17,097 | 13,196 | 51,754
Other comprehensive income | 1,802 | 83,202 | 51,211 | 36,519
Foreign Currency Translation Adjustments |  |  |  |
Before-Tax |  |  |  |
Net unrealized (losses) gains arising during the period | 2,208 | (1,126) | (134) | 1,558
Net change | 2,208 | (1,126) | (134) | 1,558
Tax Effect |  |  |  |
Net unrealized (losses) gains arising during the period | (134) | 0 | 93 | (173)
Net change | (134) | 0 | 93 | (173)
Net-of-Tax |  |  |  |
Net unrealized (losses) gains arising during the period | 2,074 | (1,126) | (41) | 1,385
Net realized losses reclassified into net income | 0 | 0 | 0 | 0
Other comprehensive income | $ 2,074 | $ (1,126) | $ (41) | $ 1,385

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