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Other Comprehensive Income | 12 Months Ended
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Dec. 31, 2023
Other Comprehensive Income (Loss), Tax [Abstract] |
Other Comprehensive Income | Other Comprehensive Income Other comprehensive income includes changes in net unrealized gains (losses) on available-for-sale investments, which is comprised of net holding gains (losses) arising during the period, changes in unrealized other-than-temporary impairment losses, if any, and reclassification adjustments for net realized gains included in net income. Other comprehensive income also includes changes in the discount rate for life and annuity benefits, changes in foreign currency translation adjustments and changes in net actuarial pension loss. The following table presents the change in accumulated other comprehensive income (loss) by component, net of noncontrolling interests.
(dollars in thousands) | Net unrealized gains (losses) on available-for-sale investments |  | Life and annuity discount rate assumption |  | Foreign currency |  | Net actuarial pension loss |  | Accumulated other comprehensive income (loss)
December 31, 2020 | $ | 698,810 |  |  | $ | — |  |  | $ | (56,420) |  |  | $ | (58,014) |  |  | $ | 584,376 |
Cumulative effect of adoption of ASU No. 2018-12 | 94,443 |  |  | (109,702) |  |  | — |  |  | — |  |  | (15,259) |
January 1, 2021 | 793,253 |  |  | (109,702) |  |  | (56,420) |  |  | (58,014) |  |  | 569,117 |
Total other comprehensive income (loss) before income taxes | (513,084) |  |  | 62,546 |  |  | (2,091) |  |  | 10,663 |  |  | (441,966) |
Income tax (expense) benefit | 108,385 |  |  | (13,135) |  |  | 1,880 |  |  | (2,273) |  |  | 94,857 |
Total other comprehensive income (loss) | (404,699) |  |  | 49,411 |  |  | (211) |  |  | 8,390 |  |  | (347,109) |
December 31, 2021 | $ | 388,554 |  |  | $ | (60,291) |  |  | $ | (56,631) |  |  | $ | (49,624) |  |  | $ | 222,008 |
Total other comprehensive income (loss) before income taxes | (1,463,876) |  |  | 189,714 |  |  | (9,677) |  |  | 31,222 |  |  | (1,252,617) |
Income tax (expense) benefit | 309,046 |  |  | (39,840) |  |  | 401 |  |  | (6,492) |  |  | 263,115 |
Total other comprehensive income (loss) | (1,154,830) |  |  | 149,874 |  |  | (9,276) |  |  | 24,730 |  |  | (989,502) |
December 31, 2022 | $ | (766,276) |  |  | $ | 89,583 |  |  | $ | (65,907) |  |  | $ | (24,894) |  |  | $ | (767,494) |
Total other comprehensive income (loss) before income taxes | 390,558 |  |  | (28,281) |  |  | 4,650 |  |  | 94 |  |  | 367,021 |
Income tax (expense) benefit | (83,655) |  |  | 5,938 |  |  | — |  |  | (20) |  |  | (77,737) |
Total other comprehensive income (loss) | 306,903 |  |  | (22,343) |  |  | 4,650 |  |  | 74 |  |  | 289,284 |
December 31, 2023 | $ | (459,373) |  |  | $ | 67,240 |  |  | $ | (61,257) |  |  | $ | (24,820) |  |  | $ | (478,210) |

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- Definition The entire disclosure for comprehensive income, which includes, but is not limited to, 1) the amount of income tax expense or benefit allocated to each component of other comprehensive income, including reclassification adjustments, 2) the reclassification adjustments for each classification of other comprehensive income and 3) the ending accumulated balances for each component of comprehensive income. + References Reference 1: 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//1943274/2147483586/944-220-S99-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(21)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147483621/220-10-S99-2 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 942 -SubTopic 220 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04(23)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147483589/942-220-S99-1 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 220 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org//220/tableOfContent + Details
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