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Consolidated Statements of Comprehensive Income (Loss) (unaudited) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2023 | Sep. 30, 2022
Statement of Comprehensive Income [Abstract] |  |  |  |
Net income | $ 147,876 | $ 140,153 | $ 449,512 | $ 227,552
Change in debt securities available-for-sale: |  |  |  |
Unrealized holding gains (losses) for the period | (208,626) | (285,798) | (304,061) | (1,019,782)
Reclassification for securities transferred to held-to-maturity | 0 | 0 | 0 | 165,473
Reclassification adjustment for securities (gains) losses realized in income | 241 | 172 | 5,440 | (85)
Income tax effect | 51,903 | 68,356 | 83,092 | 202,999
Unrealized gains (losses) on available-for-sale securities | (156,482) | (217,270) | (215,529) | (651,395)
Change in securities held-to-maturity: |  |  |  |
Adjustment for securities transferred from available-for-sale | 0 | 0 | 0 | (165,473)
Amortization of unrealized losses on securities transferred from available-for-sale | 5,623 | 6,772 | 16,574 | 10,774
Income tax effect | (1,430) | (1,651) | (2,861) | 37,621
Changes from securities held-to-maturity | 4,193 | 5,121 | 13,713 | (117,078)
Change in hedges: |  |  |  |
Net unrealized derivative gains (losses) on hedges | (15,574) | (36,755) | 45,547 | (49,679)
Reclassification adjustment for (gains) losses realized in net income | 4,927 | 749 | (19,893) | (139)
Income tax effect | 2,754 | 8,846 | (6,094) | 12,240
Changes from hedges | (7,893) | (27,160) | 19,560 | (37,578)
Change in defined benefit pension plans: |  |  |  |
Amortization of net (gains) losses recognized in income | 0 | (11) | (182) | (32)
Income tax effect | 0 | 3 | 45 | 8
Changes from defined benefit pension plans | 0 | (8) | (137) | (24)
Other comprehensive income (loss), net of tax | (160,182) | (239,317) | (182,393) | (806,075)
Comprehensive income (loss) | $ (12,306) | $ (99,164) | $ 267,119 | $ (578,523)

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