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Insurance Liabilities (Liability for Future Policy Benefits - Narrative) (Details) - Participating whole life insurance (2) | 3 Months Ended
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Mar. 31, 2024 | Mar. 31, 2023
Participating Insurance, Percentage of Gross Insurance in Force | 3.00% | 3.00%
Participating Insurance, Percentage of Premium Income | 41.00% | 39.00%
Minimum |  |
Liability for Future Policy Benefits, Interest Rate | 3.50% |
Maximum |  |
Liability for Future Policy Benefits, Interest Rate | 4.50% |

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- Definition Rate of interest used to calculate the liability for future policy benefits. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 944 -SubTopic 40 -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480081/944-40-50-6 + 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 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//1943274/2147479440/944-210-S99-1 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 944 -SubTopic 50 -Section 50 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479756/944-50-50-1 + Details
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