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Investments (Changes in Net Unrealized Gains/Losses on Investments) (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Investments [Abstract] |  |  |
Fixed maturity securities available for sale carried at fair value | $ (9,375,028) | $ (987,434) | $ 1,955,496
Adjustment for effect on other balance sheet accounts: |  |  |
Deferred policy acquisition costs, deferred sales inducements and policy benefit reserves | 4,303,226 | 542,382 | (880,517)
Deferred income tax asset/liability | 1,067,958 | 90,284 | (225,746)
Total adjustment for effect on other balance sheet accounts | 5,371,184 | 632,666 | (1,106,263)
Change in net unrealized gains/losses on investments carried at fair value | $ (4,003,844) | $ (354,768) | $ 849,233

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- Definition Adjustments for Assumed Changes in Amortization of Deferred Policy Acquisition Costs. Deferred Sales Inducements and Policy Benefit Reserves Due to Net Unrealized Gains and Losses on Available for Sale Fixed Maturity and Equity Securities. + References No definition available. + Details
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- Definition Represents the aggregate of the adjustments for the effect on other balance sheet accounts related to the pretax change in net unrealized holding gain (loss) on available-for-sale securities that has been included in accumulated other comprehensive income, a separate component of shareholders' equity, during the period. + References No definition available. + Details
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- Definition Amount, before tax and after adjustment, of unrealized gain (loss) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale) and unrealized gain (loss) on investment in debt security measured at amortized cost (held-to-maturity) from transfer to available-for-sale. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 10A -Subparagraph (f) -URI https://asc.fasb.org/extlink&oid=126968391&loc=SL7669646-108580 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 10A -Subparagraph (e) -URI https://asc.fasb.org/extlink&oid=126968391&loc=SL7669646-108580 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 11 -URI https://asc.fasb.org/extlink&oid=126968391&loc=d3e637-108580 + Details
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- Definition Amount, after tax and adjustment, of unrealized gain (loss) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale) and unrealized gain (loss) on investment in debt security measured at amortized cost (held-to-maturity) from transfer to available-for-sale. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 10A -Subparagraph (f) -URI https://asc.fasb.org/extlink&oid=126968391&loc=SL7669646-108580 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 11 -URI https://asc.fasb.org/extlink&oid=126968391&loc=d3e637-108580 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 10A -Subparagraph (e) -URI https://asc.fasb.org/extlink&oid=126968391&loc=SL7669646-108580 + Details
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