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Other Comprehensive Income (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2023 | Jun. 30, 2022 | Jun. 30, 2023 | Jun. 30, 2022
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |
Total other comprehensive income (loss) | $ (37,199) | $ (221,380) | $ 71,676 | $ (563,842)
Income tax benefit (expense) | 7,811 | 46,490 | (15,052) | 118,407
Other comprehensive income (loss), net of tax | (29,388) | (174,890) | 56,624 | (445,435)
Amounts Reclassified From Accumulated Other Comprehensive Income [Abstract] |  |  |  |
Total reclassifications before tax | 242,382 | 315,891 | 437,986 | 535,330
Income tax benefit (expense) | (51,328) | (66,623) | (92,385) | (111,049)
Total reclassifications, net of tax | 191,054 | 249,268 | 345,601 | 424,281
Reclassification from Accumulated Other Comprehensive Income |  |  |  |
Amounts Reclassified From Accumulated Other Comprehensive Income [Abstract] |  |  |  |
Total reclassifications before tax | (6,842) | (3,053) | (19,938) | 1,290
Income tax benefit (expense) | 1,437 | 641 | 4,187 | (271)
Total reclassifications, net of tax | (5,405) | (2,412) | (15,751) | 1,019
Accumulated other comprehensive income (loss) |  |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |
Other comprehensive income (loss), net of tax | (29,388) | (174,890) | 56,624 | (445,435)
Net unrealized gains and (losses) on available-for-sale securities |  |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |
Total other comprehensive income (loss) | (38,270) | (222,000) | 63,829 | (564,960)
Income tax benefit (expense) | 8,036 | 46,620 | (13,404) | 118,642
Other comprehensive income (loss), net of tax | (30,234) | (175,380) | 50,425 | (446,318)
Net unrealized gains and (losses) on available-for-sale securities | Reclassification from Accumulated Other Comprehensive Income |  |  |  |
Amounts Reclassified From Accumulated Other Comprehensive Income [Abstract] |  |  |  |
Total reclassifications before tax | (5,771) | (2,433) | (9,935) | 2,408
Income tax benefit (expense) | 1,212 | 511 | 2,086 | (506)
Total reclassifications, net of tax | (4,559) | (1,922) | (7,849) | 1,902
Net benefit plan assets and (obligations) recognized in shareholders' equity |  |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |
Total other comprehensive income (loss) | 1,071 | 620 | 7,847 | 1,118
Income tax benefit (expense) | (225) | (130) | (1,648) | (235)
Other comprehensive income (loss), net of tax | 846 | 490 | 6,199 | 883
Net benefit plan assets and (obligations) recognized in shareholders' equity | Reclassification from Accumulated Other Comprehensive Income |  |  |  |
Amounts Reclassified From Accumulated Other Comprehensive Income [Abstract] |  |  |  |
Total reclassifications before tax | (1,071) | (620) | (10,003) | (1,118)
Income tax benefit (expense) | 225 | 130 | 2,101 | 235
Total reclassifications, net of tax | $ (846) | $ (490) | $ (7,902) | $ (883)

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