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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Fair Value Measurement (Details)
12 Months Ended
Dec. 31, 2022
methodology
Fair Value Measurements  
Number of valuation methodologies used to determine fair value of investments (in methodologies) 2
Maximum  
Fair Value Measurements  
Weighting percentage of methodology used to determine fair value of investments (up to 100%) 100.00%
Minimum | Illiquidity Discount  
Fair Value Measurements  
Private equity, measurement input 0.05