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INVESTMENTS - Narrative (Details) - USD ($) |  | 6 Months Ended |  |
--- | --- | --- | --- | ---
Mar. 01, 2021 | Jun. 30, 2021 | Jun. 30, 2022 | Dec. 31, 2021
Debt Securities, Available-for-sale [Line Items] |  |  |  |
Fair value of securities transferred from available for sale to fixed maturities, held to maturity | $ 405,000,000 | $ 405,000,000 |  |
Net carrying value of fixed investments held to maturity |  |  | $ 641,428,000 | $ 446,016,000
Allowance for expected credit losses |  |  | 0 | 0
ABS |  |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |  |
Net carrying value of fixed investments held to maturity |  |  | 574,228,000 | 408,316,000
Allowance for expected credit losses |  |  | 0 | 0
Corporate debt |  |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |  |
Net carrying value of fixed investments held to maturity |  |  | 67,200,000 | 37,700,000
Allowance for expected credit losses |  |  | $ 0 | $ 0

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