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INCOME TAXES - NARRATIVE (Details) - USD ($) $ in Millions | Sep. 30, 2023 | Dec. 31, 2022
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Operating Loss Carryforwards [Line Items] |  |
Deferred tax assets more likely than not to be realized through future taxable earnings | $ 1,026.0 | $ 1,055.4
Loss limitation based on income of life insurance company, percent | 35.00% |
Loss limitation based on loss of non-life entities, percent | 35.00% |
Federal long-term tax exempt rate | 3.17% |
Ownership change threshold restricting NOL usage | 50.00% |
Net state operating loss carryforwards | $ 2.5 | $ 2.5
Federal |  |
Operating Loss Carryforwards [Line Items] |  |
Net federal operating loss carryforwards | $ 476.6 |

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