Insurance Liabilities (Liability for Future Policy Benefits - Narrative) (Details) - Participating whole life insurance (2)	3 Months Ended
Mar. 31, 2026	Mar. 31, 2025
Additional Liability, Long-Duration Insurance [Line Items]
Participating Insurance, Percentage of Gross Insurance in Force	3.00%	3.00%
Participating Insurance, Percentage of Premium Income	38.00%	39.00%
Minimum
Additional Liability, Long-Duration Insurance [Line Items]
Liability for Future Policy Benefits, Interest Rate	3.50%
Maximum
Additional Liability, Long-Duration Insurance [Line Items]
Liability for Future Policy Benefits, Interest Rate	4.00%

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Rate of interest used to calculate the liability for future policy benefits.

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Percentage of participating insurance contract to insurance contracts in force.

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Percentage of participating insurance to premium income.

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