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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) - Property and Casualty Insurance [Member]
Dec. 31, 2022
Average annual Percentage Payout [Abstract]  
Year 1 47.20%
Year 2 21.10%
Year 3 13.60%
Year 4 5.10%
Year 5 0.70%
Year 6 0.00%
Year 7 0.00%