POLICYHOLDERS' LIABILITIES - PREDECESSOR COMPANY - Narrative (Details)	12 Months Ended
	Dec. 31, 2022
Minimum     | Individual And Group Annuities And Supplementary Contracts
Policyholder Account Balance [Line Items]
Liability for future policy benefits, interest rate	1.00%
Percentage Of Reserves Based On Interest Rated In Excess Of 8 Percent	1.00%
Minimum     | Insurance, Other
Policyholder Account Balance [Line Items]
Liability for future policy benefits, interest rate	0.60%
Minimum     | Interest-sensitive life contracts
Policyholder Account Balance [Line Items]
Liability for future policy benefits, interest rate	3.50%
Minimum     | Individual annuities
Policyholder Account Balance [Line Items]
Liability for future policy benefits, interest rate	0.00%
Minimum     | Guaranteed interest accounts
Policyholder Account Balance [Line Items]
Liability for future policy benefits, interest rate	0.00%
Maximum     | Individual And Group Annuities And Supplementary Contracts
Policyholder Account Balance [Line Items]
Liability for future policy benefits, interest rate	8.30%
Percentage Of Reserves Based On Interest Rated In Excess Of 8 Percent	8.00%
Maximum     | Insurance, Other
Policyholder Account Balance [Line Items]
Liability for future policy benefits, interest rate	2.90%
Maximum     | Interest-sensitive life contracts
Policyholder Account Balance [Line Items]
Liability for future policy benefits, interest rate	6.00%
Maximum     | Individual annuities
Policyholder Account Balance [Line Items]
Liability for future policy benefits, interest rate	6.50%
Maximum     | Guaranteed interest accounts
Policyholder Account Balance [Line Items]
Liability for future policy benefits, interest rate	5.80%