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Investments (Changes in Net Unrealized Gains/Losses on Investments) (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2020 | Sep. 30, 2019 | Sep. 30, 2020 | Sep. 30, 2019
Investments [Abstract] |  |  |  |
Fixed maturity securities available for sale carried at fair value | $ 800,492 | $ 990,481 | $ 1,285,600 | $ 3,891,291
Adjustment for effect on other balance sheet accounts: |  |  |  |
Deferred policy acquisition costs and deferred sales inducements | (303,946) | (245,044) | (508,144) | (1,750,390)
Deferred income tax asset/liability | (104,274) | (155,992) | (163,266) | (449,040)
Total adjustment for effect on other balance sheet accounts | (408,220) | (401,036) | (671,410) | (2,199,430)
Change in net unrealized gains/losses on investments carried at fair value | $ 392,272 | $ 589,445 | $ 614,190 | $ 1,691,861

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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, after reclassification adjustments, of appreciation (loss) in value of unsold available-for-sale securities. Excludes amounts related to other than temporary impairment (OTTI) loss. + 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 http://asc.fasb.org/extlink&oid=118930883&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 http://asc.fasb.org/extlink&oid=118930883&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 http://asc.fasb.org/extlink&oid=118930883&loc=d3e637-108580 + Details
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