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, 2021
Average annual Percentage Payout [Abstract]
Year 1	50.40%
Year 2	21.70%
Year 3	12.20%
Year 4	4.30%
Year 5	2.80%
Year 6	0.00%
Year 7	0.00%