Accumulated Other Comprehensive Income (Loss) - Changes in components of AOCI (Details) - USD ($) $ in Thousands |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2026 |
Sep. 30, 2025 |
Sep. 30, 2026 |
Sep. 30, 2025 |
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| Accumulated Other Comprehensive Income (Loss) | ||||
| Balance | $ 9,131,468 | $ 8,801,134 | $ 9,059,108 | $ 5,890,415 |
| Net comprehensive income (loss) | (229,475) | 56,097 | (256,229) | 290,909 |
| Balance | 9,047,333 | 9,011,126 | 9,047,333 | 9,011,126 |
| Benefit Plans | ||||
| Accumulated Other Comprehensive Income (Loss) | ||||
| Balance | 565 | 578 | 565 | 578 |
| Balance | 565 | 578 | 565 | 578 |
| Unrealized Losses on Securities Available for Sale | ||||
| Accumulated Other Comprehensive Income (Loss) | ||||
| Balance | (310,700) | (372,687) | (283,946) | (607,499) |
| Other comprehensive income (loss) before reclassifications | (229,475) | 56,097 | (256,229) | 117,241 |
| Amounts reclassified from accumulated other comprehensive loss | 173,668 | |||
| Net comprehensive income (loss) | (229,475) | 56,097 | (256,229) | 290,909 |
| Balance | (540,175) | (316,590) | (540,175) | (316,590) |
| Accumulated Other Comprehensive Income (Loss) | ||||
| Accumulated Other Comprehensive Income (Loss) | ||||
| Balance | (310,135) | (372,109) | (283,381) | (606,921) |
| Other comprehensive income (loss) before reclassifications | (229,475) | 56,097 | (256,229) | 117,241 |
| Amounts reclassified from accumulated other comprehensive loss | 173,668 | |||
| Net comprehensive income (loss) | (229,475) | 56,097 | (256,229) | 290,909 |
| Balance | $ (539,610) | $ (316,012) | $ (539,610) | $ (316,012) |
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- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. No definition available.
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- Definition Amount after tax, before reclassification adjustments of other comprehensive income (loss). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount after tax of other comprehensive income (loss) attributable to parent entity. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount after tax of reclassification adjustments of other comprehensive income (loss). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of equity (deficit) attributable to parent. Excludes temporary equity and equity attributable to noncontrolling interest. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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