XML 70 R55.htm IDEA: XBRL DOCUMENT v3.25.0.1
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Revision of Prior Period Amounts (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Market Risk Benefit [Line Items]      
Decrease to market risk benefit $ 0.0 $ 0.0  
Market risk benefit liability 60.0 117.1  
Policyholder account balance (17,615.8) (15,222.5)  
Insurance policy benefits 2,471.9 2,331.1 $ 1,616.7
Decreased insurance policy benefits (60.5) (34.2) (141.5)
Net liability for future policy benefits $ 11,705.5 12,188.4  
Market Risk Benefits | Restatement Adjustment      
Market Risk Benefit [Line Items]      
Decrease to market risk benefit   (75.4)  
Market risk benefit liability   109.7  
Policyholder account balance   185.1  
Insurance policy benefits   12.9 1.3
Decreased insurance policy benefits   12.9 $ 1.3
Embedded Derivatives | Restatement Adjustment      
Market Risk Benefit [Line Items]      
Policyholder account balance   260.2  
Net liability for future policy benefits   $ 260.2