REVISION OF PREVIOUSLY ISSUED FINANCIAL STATEMENTS - Narrative (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2023	Mar. 31, 2020
Accounting Changes and Error Corrections [Abstract]
Deferred cost amortization		$ 14
Reinsured risk, percent	100.00%
Total investments	$ 25
Impact of net unrealized investment gains (losses)	$ 2

Debt Securities, Available-for-Sale, Transfer to Equity Securities

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Amount of amortization of other deferred costs recognized in the income statement.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
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Percentage of risk undertaken originally by insurer ceded to reinsurer.

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 20
-Section 50
-Paragraph 3
-URI https://asc.fasb.org/extlink&oid=99397103&loc=d3e6811-158387

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Amount of unrealized gain (loss) on investment.

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