POLICYHOLDERS' LIABILITIES - PREDECESSOR COMPANY - Schedule of Policyholders' Account Balances (Details) $ in Millions	Dec. 31, 2021 USD ($)
Policyholder Account Balance [Line Items]
Future policy benefits	$ 11,750
Interest-sensitive life contracts
Policyholder Account Balance [Line Items]
Future policy benefits	14
Individual annuities
Policyholder Account Balance [Line Items]
Future policy benefits	11,365
Guaranteed interest accounts
Policyholder Account Balance [Line Items]
Future policy benefits	$ 371