GOODWILL AND INTANGIBLE ASSETS (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Finite-Lived Intangible Assets [Line Items]
Amortization of intangible assets	$ 243.2	$ 231.7	$ 216.5
Adjustments to intangibles through amortization expense	0.4	4.5	$ 3.0
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Asset	3.3	$ 2.1
Finite-Lived Intangible Assets, Future Amortization Expense
Estimated amortization expense, 2013	243.2
Estimated amortization expense, 2014	234.0
Estimated amortization expense, 2015	228.0
Estimated amortization expense, 2016	224.8
Estimated amortization expense, 2017	219.6
Estimated amortization expense, Thereafter	$ 2,315.7