FAIR VALUE MEASUREMENTS (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Increase (Decrease) in Noncontrolling Interest Put	$ 0.8
Long-term debt, less current portion	5,789.8	$ 5,990.9
Noncontrolling interest puts	15.8	15.0
Fair market value of zero-coupon subordinated notes	0.0	16.9
Fair market value of senior notes	5,281.1	5,318.0
Fair Value Hedges, Net		3.1
Foreign Currency Contract, Asset, Fair Value Disclosure	3.2	2.8
Cash Surrender Value, Fair Value Disclosure	80.2	63.5
Contingent Consideration Classified as Equity, Fair Value Disclosure	7.8	18.6
Fair Value Liabilities Measured On Recurring Basis Deferred Compensation Liability	76.7	64.2
Equity Securities, FV-NI	9.1
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Asset	3.3	2.1
Contingent consideration adjustment	(14.1)
Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Noncontrolling interest puts	0.0	0.0
Fair Value Hedges, Net	0.0
Foreign Currency Contract, Asset, Fair Value Disclosure	0.0	0.0
Interest Rate Fair Value Hedge Asset at Fair Value		0.0
Cash Surrender Value, Fair Value Disclosure	0.0	0.0
Contingent Consideration Classified as Equity, Fair Value Disclosure	0.0	0.0
Fair Value Liabilities Measured On Recurring Basis Deferred Compensation Liability	0.0
Equity Securities, FV-NI	9.1
Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Noncontrolling interest puts	15.8	15.0
Fair Value Hedges, Net	1.5
Foreign Currency Contract, Asset, Fair Value Disclosure	3.2	2.8
Interest Rate Fair Value Hedge Derivative at Fair Value, Net		3.1
Cash Surrender Value, Fair Value Disclosure	80.2	63.5
Contingent Consideration Classified as Equity, Fair Value Disclosure	0.0	0.0
Fair Value Liabilities Measured On Recurring Basis Deferred Compensation Liability		0.0
Equity Securities, FV-NI	0.0
Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Noncontrolling interest puts	0.0	0.0
Fair Value Hedges, Net	0.0
Foreign Currency Contract, Asset, Fair Value Disclosure	0.0	0.0
Interest Rate Fair Value Hedge Derivative at Fair Value, Net		0.0
Cash Surrender Value, Fair Value Disclosure	0.0	0.0
Contingent Consideration Classified as Equity, Fair Value Disclosure	7.8	18.6	$ 16.5
Fair Value Liabilities Measured On Recurring Basis Deferred Compensation Liability	0.0	$ 0.0
Equity Securities, FV-NI	$ 0.0