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FAIR VALUE MEASUREMENTS - Unconsolidated Investments Holding a Variable Interest (Details) - USD ($)
$ in Thousands
Sep. 30, 2022
Dec. 31, 2021
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]    
Other investments, Maximum exposure to loss $ 1,939,867 $ 1,822,317
Carrying amount    
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]    
Other investments, Maximum exposure to loss 787,941 539,866
Unfunded Commitments    
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]    
Other investments, Maximum exposure to loss $ 1,151,926 $ 1,282,451