Property and Casualty Insurance Activity (Details 5) - USD ($)	6 Months Ended
Jan. 01, 2023	Jun. 30, 2022	Dec. 30, 2021	Jun. 30, 2021
Catastrophe [Member]
Initial loss subject to personal lines quota share treaty	$ 10,000,000	$ 10,000,000	$ 0	$ 0
Risk retained per catastrophe occurrence		7,400,000	10,000,000	10,000,000
Catastrophe stub coverage for the period from October 18, 2021 through December 31, 2021		0	5,000,000
in excess of 1		0	5,000,000
Catastrophe loss coverage in excess of quota share coverage		$ 490,000,000	$ 490,000,000	$ 475,000,000
Reinstatement premium protection		Yes	Yes	Yes
Property And Casualty Personal Insurance Product Line Member
Quota share treaty percent ceded	30.00%	30.00%
Risk retained on initial $1,000,000 of losses	$ 700,000	$ 700,000	$ 1,000,000	$ 1,000,000
Losses per occurrence subject to quota share reinsurance coverage	1,000,000	1,000,000
Excess of loss coverage and facultative facility coverage	400,000	8,400,000	8,000,000	8,000,000
In excess of	600,000	600,000	1,000,000	1,000,000
Total reinsurance coverage per occurrence	500,000	8,500,000	8,000,000	8,000,000
Losses per occurrence subject to reinsurance coverage	$ 1,000,000	$ 9,000,000	$ 9,000,000	$ 9,000,000
Expiration date	Jan. 01, 2023	Jun. 30, 2022	Jun. 30, 2022	Jun. 30, 2021