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FAIR VALUE MEASUREMENTS - Schedule of Other Investments Measured Using Net Asset Valuations (Details) - Fair Value Measured at Net Asset Value Per Share - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair Value	$ 1,982,762	$ 1,415,804
Unfunded Commitments	1,832,038	1,622,913
Private credit funds
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair Value	1,107,258	982,016
Unfunded Commitments	1,104,342	949,135
Private equity funds
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair Value	541,995	433,788
Unfunded Commitments	727,696	$ 673,778
Hedge funds
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair Value	333,509
Unfunded Commitments	$ 0

X

- Definition

Fair value of investment other than investment in equity security, investment in debt security and equity method investment. Includes, but is not limited to, investment in certain entities that calculate net asset value per share. Example includes, but is not limited to, investment in hedge fund, venture capital fund, private equity fund, and real estate partnership or fund.

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The amount of unfunded commitments for which the entity is obligated, to those certain investments for which net asset value per share is calculated (including by unit, membership interest, or other equity (ownership interest) unit measure) (alternative investments).

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