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Reinsurance - Quota Share Reinsurance (Details) - Reinsurance Policy, Type [Axis]: Quota Share Reinsurance - USD ($)
$ in Billions
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2022
QSR-2019    
SEC Schedule, 12-17, Insurance Companies, Reinsurance, Net [Abstract]    
Ceded premiums earned related to percent of risk on all other eligible policies written   20.00%
Ceding commission   20.00%
Profit commission, maximum 60.00% 63.00%
Ceded premiums earned related to percent of risk on eligible single premium policies   40.00%
RIF ceded   $ 6.9
QSR-2022    
SEC Schedule, 12-17, Insurance Companies, Reinsurance, Net [Abstract]    
Ceded premiums earned related to percent of risk on all other eligible policies written   20.00%
Ceding commission   20.00%
Profit commission, maximum   62.00%
RIF ceded   $ 6.9