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Future Policy Benefits - Participating Business - Narrative (Details) | 12 Months Ended
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Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Liability for Future Policy Benefits and Policyholder Contract Deposits, Assumptions [Abstract] |  |  |
Participating Insurance, Percentage of Gross Insurance in Force | 2.00% | 2.00% |
Life Premiums as Percentage of Gross Premiums | 9.00% | 10.00% | 11.00%

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- Definition Ratio with total life insurance premiums in numerator and total GAAP premiums in the denominator. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 275 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 18 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482861/275-10-50-18 + Details
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- Definition Percentage of participating insurance contract to insurance contracts in force. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 50 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479756/944-50-50-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(14)(b)(1)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478777/944-210-S99-1 + Details
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