FAIR VALUE MEASUREMENTS - Summary of Financial Instruments Carrying and Fair Values (Details) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Carrying Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other investments	$ 6.0	$ 9.3
Long-term debt, including current portion	6,100.3	5,354.1
Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other investments	5.8	9.3
Long-term debt, including current portion	$ 5,220.3	$ 4,662.9