FAIR VALUE MEASUREMENTS - Unconsolidated Investments Holding a Variable Interest (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Other investments, Maximum exposure to loss	$ 2,171,146	$ 2,064,878
Carrying amount
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Other investments, Maximum exposure to loss	1,078,812	916,248
Unfunded Commitments
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Other investments, Maximum exposure to loss	$ 1,092,334	$ 1,148,630