Consolidated Statements of Operations (Parenthetical) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Property-liability insurance premiums earned	$ 1,907	$ 1,982	$ 1,154
Property and casualty insurance claims and claims expense
Reinsurance ceded amount	1,600	3,484	530
Accident, health and other policy benefits
Reinsurance ceded amount	28	86	15
Property and casualty insurance premiums
Property-liability insurance premiums earned	1,869	1,904	1,141
Accident and health insurance premiums and contract charges
Life and annuity premiums and contract charges	$ 38	$ 78	$ 13