FAIR VALUE - Put and Call Options Measured at Fair Value (Details) - Options - Level 3 fair value measurement	Dec. 31, 2021	Dec. 31, 2020
Annualized volatility
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Significant unobservable inputs	0.224	0.299
Secured credit rate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Significant unobservable inputs		0.004
NOPAT
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Significant unobservable inputs		0.120
Credit spread
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Significant unobservable inputs	0.009
Revenue exit multiple | Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Significant unobservable inputs	1.5
Revenue exit multiple | Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Significant unobservable inputs	2.5
Weighted average cost of capital
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Significant unobservable inputs	0.125	0.095
Long term growth rate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Significant unobservable inputs	0.030	0.030