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INSURANCE GROUP STATUTORY FINANCIAL INFORMATION - Narrative (Details)
 6 Months Ended
Jun. 30, 2023
USD ($)
prescribedAndPermittedPractice
Sep. 30, 2022
Jun. 30, 2021
USD ($)
Related Party Transaction [Line Items]      
Number of prescribed and permitted practices | prescribedAndPermittedPractice 3    
Statement of Statutory Accounting Principles 108      
Related Party Transaction [Line Items]      
Statutory accounting practices, statutory surplus, increase $ 38,000,000    
Statutory accounting practices, statutory unassigned surplus, balance     $ 0
Regulation Number 213      
Related Party Transaction [Line Items]      
Statutory accounting practices, statutory surplus, increase (decrease) to new standard application (330,000,000)    
Statutory accounting practices, total asset required, percentage   100.00%  
Statutory accounting practices, total asset requirement reserves 318,000,000    
Regulation Number 213 with Seperate Accounts      
Related Party Transaction [Line Items]      
Statutory accounting practices, statutory surplus, increase (decrease) to new standard application $ 1,700,000,000