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%