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Reinsurance And Policy Benefits And Losses Claims And Loss Expenses Payable (Average Annual Percentage Payout Of Incurred Claims By Age Net Of Reinsurance) (Details)
Mar. 31, 2024
Average annual Percentage Payout [Abstract]  
Year 1 44.20%
Year 2 22.30%
Year 3 13.90%
Year 4 6.50%
Year 5 4.90%
Year 6 0.10%
Year 7 0.00%