FAIR VALUE MEASUREMENTS (Change in Fair Value at Level 3) (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Change in Fair Value Measurement Categorized in Level 3 [Roll Forward]
Transfers into Level 3	$ 0	$ 0	$ 0	$ 0
Transfers out of Level 3	0	0	0	0
Contingent consideration obligation
Change in Fair Value Measurement Categorized in Level 3 [Roll Forward]
Balance at beginning of period	123,400,000	79,500,000	150,500,000	29,400,000
Additions	0	0	0	0
Settlements	(78,200,000)	0	(83,600,000)	0
Unrealized (gain) loss included in earnings	(27,700,000)	77,600,000	(49,400,000)	127,700,000
Balance at end of period	$ 17,500,000	$ 157,100,000	$ 17,500,000	$ 157,100,000