FAIR VALUE MEASUREMENTS (Details) - USD ($) $ in Millions	Mar. 31, 2018	Dec. 31, 2017
Fair Value, Liabilities Measured on Recurring Basis, Financial Statement Captions [Line Items]
Noncontrolling interest puts	$ 16.0	$ 16.7
Fair market value of zero-coupon subordinated notes	18.8	18.8
Fair market value of senior notes	5,953.3	6,078.9
Cash Surrender Value, Fair Value Disclosure	63.9	64.0
Fair Value Liabilities Measured On Recurring Basis Deferred Compensation Liability	65.8	64.5
Contingent Consideration Classified as Equity, Fair Value Disclosure	16.5	16.5
Fair Value Hedges, Net	4.5
Foreign Currency Contract, Asset, Fair Value Disclosure	2.2
Foreign Currency Contracts, Liability, Fair Value Disclosure	2.1
Level 1 [Member]
Fair Value, Liabilities Measured on Recurring Basis, Financial Statement Captions [Line Items]
Noncontrolling interest puts	0.0	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 Hedges, Net	0.0	0.0
Foreign Currency Contract, Asset, Fair Value Disclosure	0.0
Fair Value, Inputs, Level 2 [Member]
Fair Value, Liabilities Measured on Recurring Basis, Financial Statement Captions [Line Items]
Noncontrolling interest puts	16.0	16.7
Cash Surrender Value, Fair Value Disclosure	63.9	64.0
Fair Value Liabilities Measured On Recurring Basis Deferred Compensation Liability	0.0	0.0
Contingent Consideration Classified as Equity, Fair Value Disclosure	0.0	0.0
Fair Value Hedges, Net	4.5	4.1
Foreign Currency Contract, Asset, Fair Value Disclosure	2.2
Foreign Currency Contracts, Liability, Fair Value Disclosure	2.1
Level 3 [Member]
Fair Value, Liabilities Measured on Recurring Basis, Financial Statement Captions [Line Items]
Noncontrolling interest puts	0.0	0.0
Cash Surrender Value, Fair Value Disclosure	0.0	0.0
Fair Value Liabilities Measured On Recurring Basis Deferred Compensation Liability	0.0	0.0
Contingent Consideration Classified as Equity, Fair Value Disclosure	16.5	16.5
Fair Value Hedges, Net	0.0	$ 0.0
Foreign Currency Contract, Asset, Fair Value Disclosure	$ 0.0