SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Future Application of Accounting Standards (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021	Feb. 01, 2021	Dec. 31, 2020
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total Equity	$ 53,506,820	$ 58,056,729		$ 40,799,916
Cumulative Effect, Period of Adoption, Adjustment | Minimum
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total Equity		60,000
Accumulated Other Comprehensive Income (Loss) ("AOCI")		(10,000)
Retained Earnings		70,000
Cumulative Effect, Period of Adoption, Adjustment | Maximum
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total Equity		160,000
Accumulated Other Comprehensive Income (Loss) ("AOCI")		40,000
Retained Earnings		$ 120,000
Global Atlantic | VOBA
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Amortizable gross carrying amount			$ 1,024,520
Intangible liabilities, gross			1,273,414
Global Atlantic | VOBA | Cumulative Effect, Period of Adoption, Adjustment | Minimum
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Amortizable gross carrying amount			420,000
Global Atlantic | VOBA | Cumulative Effect, Period of Adoption, Adjustment | Maximum
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Amortizable gross carrying amount			$ 520,000