CERTAIN NONTRADITIONAL LONG-DURATION CONTRACTS WITH GUARANTEES - PREDECESSOR COMPANY - Narrative (Details) $ in Billions	Dec. 31, 2021 USD ($)
New York Variable Annuities \| Fair Value Guarantee
Long-Duration Contracts, Assumptions by Product and Guarantee [Line Items]
Variable annuity contract balance, invested in separate account investment options	$ 1.2

Value of the general accounts corresponding to the specified product, guarantee type and subset of the guarantee.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 80
-Section 50
-Paragraph 1
-Subparagraph (d)
-URI https://asc.fasb.org/extlink&oid=124508989&loc=d3e19393-158473

Name:	us-gaap_NetAmountAtRiskByProductAndGuaranteeGeneralAccountValue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant