REVENUES - Contract Liability (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022
Change in contract liability
Contract liability as of beginning of the year	$ 116.5	$ 91.7
Revenue recognized in the period from: Amounts included in the contract liability at the beginning of the period	(116.5)	(91.7)
Increases due to billings excluding amounts recognized as revenue during the period ended	107.4	99.1
Contract liability as of end of period	$ 107.4	$ 99.1