CERTAIN NONTRADITIONAL LONG-DURATION CONTRACTS WITH GUARANTEES - PREDECESSOR COMPANY - Schedule of Account Balances of Variable Annuity Contracts (Details) - New York Variable Annuities $ in Millions	Dec. 31, 2021 USD ($)
Long-Duration Contracts, Assumptions by Product and Guarantee [Line Items]
Variable annuity contract balance	$ 31,778
Equity funds
Long-Duration Contracts, Assumptions by Product and Guarantee [Line Items]
Variable annuity contract balance	20,796
Bond funds
Long-Duration Contracts, Assumptions by Product and Guarantee [Line Items]
Variable annuity contract balance	9,651
Money market funds
Long-Duration Contracts, Assumptions by Product and Guarantee [Line Items]
Variable annuity contract balance	$ 1,331