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FAIR VALUE MEASUREMENTS (Details)
$ in Millions
12 Months Ended
Dec. 31, 2023
USD ($)
Reconciliation of changes in fair value measurement, assets [abstract]  
Balance, December 31, 2022 $ 4,425.1
Balance, December 31, 2023 4,537.9
Recurring fair value measurement  
Reconciliation of changes in fair value measurement, assets [abstract]  
Balance, December 31, 2022 535.9
Balance, December 31, 2023 501.4
Level 3 | Recurring fair value measurement  
Reconciliation of changes in fair value measurement, assets [abstract]  
Balance, December 31, 2022 20.0
Balance, December 31, 2023 15.2
Marketable securities | Recurring fair value measurement  
Reconciliation of changes in fair value measurement, assets [abstract]  
Balance, December 31, 2022 6.1
Balance, December 31, 2023 14.2
Marketable securities | Level 3 | Recurring fair value measurement  
Reconciliation of changes in fair value measurement, assets [abstract]  
Balance, December 31, 2022 0.4
Reclassification to Level 1 (0.4)
Balance, December 31, 2023 $ 0.0