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FAIR VALUE MEASUREMENTS - Fair value measurements on recurring and nonrecurring valuation techniques (Details)	9 Months Ended	12 Months Ended
	Sep. 30, 2025	Dec. 31, 2024
Discount rate | Employment Agreement Award
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Significant Unobservable Input Value	0.115	0.115
Discount rate | Redeemable Non-controlling Interests
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Significant Unobservable Input Value	0.155	0.205
Operating profit margin range | Employment Agreement Award | Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Significant Unobservable Input Value	0.200	0.270
Operating profit margin range | Employment Agreement Award | Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Significant Unobservable Input Value	0.381	0.344
Operating profit margin range | Redeemable Non-controlling Interests | Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Significant Unobservable Input Value	0.068	0.309
Operating profit margin range | Redeemable Non-controlling Interests | Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Significant Unobservable Input Value	0.217	0.340
Revenue growth rate range | Employment Agreement Award | Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Significant Unobservable Input Value	(0.078)	(0.122)
Revenue growth rate range | Employment Agreement Award | Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Significant Unobservable Input Value	(0.020)	0.019
Revenue growth rate range | Redeemable Non-controlling Interests | Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Significant Unobservable Input Value	(0.005)	(0.051)
Revenue growth rate range | Redeemable Non-controlling Interests | Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Significant Unobservable Input Value	0.243	0.197
Average recurring EBITDA multiple | Employment Agreement Award
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Significant Unobservable Input Value		4.5
Average recurring EBITDA multiple | Employment Agreement Award | Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Significant Unobservable Input Value	0.04
Average recurring EBITDA multiple | Employment Agreement Award | Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Significant Unobservable Input Value	0.045
EBITDA Exit multiple | Redeemable Non-controlling Interests
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Significant Unobservable Input Value		0.040

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No definition available.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

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