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INCOME TAXES - NARRATIVE (Details) - USD ($) $ in Millions | Sep. 30, 2024 | Dec. 31, 2023
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Operating Loss Carryforwards [Line Items] |  |
Impact of change in tax method of accounting | $ 985.0 |
Depreciable life of self-constructed assets | 39 years |
Deferred tax assets more likely than not to be realized through future taxable earnings | $ 775.8 | $ 937.1
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 | 3.49% |
Ownership change threshold restricting NOL usage | 50.00% |
Net state operating loss carryforwards | $ 38.4 | $ 2.5
Federal |  |
Operating Loss Carryforwards [Line Items] |  |
Net federal operating loss carryforwards | $ 1,100.0 |

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- Definition Amount, after allocation of valuation allowances and deferred tax liability, of deferred tax asset attributable to deductible differences and carryforwards, without jurisdictional netting. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482685/740-10-50-2 + Details
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