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Accumulated Other Comprehensive Income (Loss) - Schedule of AOCI (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
AOCI Attributable to Parent, Net of Tax [Roll Forward] |  |  |
Beginning Balance | $ 5,562,900 | $ 5,128,595 | $ 3,012,018
Other comprehensive income (loss) before reclassifications | (33,638) | 38,379 | (798,735)
Amounts reclassified from AOCI to income | 26,404 | 9,234 | 14,688
Ending Balance | 6,340,350 | 5,562,900 | 5,128,595
Accumulated Other Comprehensive Income (Loss) |  |  |
AOCI Attributable to Parent, Net of Tax [Roll Forward] |  |  |
Beginning Balance | (738,809) | (786,422) | (2,375)
Ending Balance | (746,043) | (738,809) | (786,422)
Unrealized Gains and Losses on Available- for-Sale Debt Securities |  |  |
AOCI Attributable to Parent, Net of Tax [Roll Forward] |  |  |
Beginning Balance | (652,518) | (642,346) | (2,950)
Other comprehensive income (loss) before reclassifications | (15,702) | (14,817) | (639,463)
Amounts reclassified from AOCI to income | 157 | 4,645 | 67
Ending Balance | (668,063) | (652,518) | (642,346)
Unrealized Gains and Losses on Held-to- Maturity Securities |  |  |
AOCI Attributable to Parent, Net of Tax [Roll Forward] |  |  |
Beginning Balance | (95,472) | (112,664) | 0
Other comprehensive income (loss) before reclassifications | 0 | 1,325 | (125,229)
Amounts reclassified from AOCI to income | 13,178 | 15,867 | 12,565
Ending Balance | (82,294) | (95,472) | (112,664)
Gains and Losses on Hedges |  |  |
AOCI Attributable to Parent, Net of Tax [Roll Forward] |  |  |
Beginning Balance | 9,181 | (31,549) | 543
Other comprehensive income (loss) before reclassifications | (17,936) | 51,871 | (34,043)
Amounts reclassified from AOCI to income | 13,069 | (11,141) | 1,951
Ending Balance | 4,314 | 9,181 | (31,549)
Defined Benefit Pension Plans |  |  |
AOCI Attributable to Parent, Net of Tax [Roll Forward] |  |  |
Beginning Balance | 0 | 137 | 32
Other comprehensive income (loss) before reclassifications | 0 | 0 | 0
Amounts reclassified from AOCI to income |  | (137) | 105
Ending Balance | $ 0 | $ 0 | $ 137

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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. + References No definition available. + Details
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- Definition Amount after tax, before reclassification adjustments of other comprehensive income (loss). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -Publisher FASB -URI https://asc.fasb.org/1943274/2147482790/220-10-45-14A Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482765/220-10-50-5 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 830 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481674/830-30-50-1 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 830 -SubTopic 30 -Name Accounting Standards Codification -Section 45 -Paragraph 17 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481694/830-30-45-17 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 830 -SubTopic 30 -Name Accounting Standards Codification -Section 45 -Paragraph 20 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481694/830-30-45-20 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 220 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04(19)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147477250/944-220-S99-1 Reference 7: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482765/220-10-50-4 Reference 8: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 55 -Paragraph 15 -SubTopic 10 -Topic 220 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482739/220-10-55-15 + Details
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