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FAIR VALUE MEASUREMENTS - Schedule of Variable Interest Entities (Details) - USD ($) $ in Thousands	Jun. 30, 2025	Dec. 31, 2024
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Other investments, maximum exposure to loss	$ 4,319,821	$ 3,856,504
Carrying Amount
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Other investments, maximum exposure to loss	2,295,939	1,993,362
Unfunded Commitments
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Other investments, maximum exposure to loss	$ 2,023,882	$ 1,863,142

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