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FAIR VALUE MEASUREMENTS - Investments (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2023
Oct. 01, 2022
Sep. 30, 2023
Oct. 01, 2022
Dec. 31, 2022
Fair Value Measurement Inputs and Valuation Techniques [Line Items]          
Gain (loss) on investments $ 0.8 $ (0.5) $ 1.4 $ (2.4)  
Fair Value, Inputs, Level 1          
Fair Value Measurement Inputs and Valuation Techniques [Line Items]          
Investments $ 16.4 $ 15.1 $ 16.4 $ 15.1 $ 15.1