GOODWILL AND INTANGIBLE ASSETS (Components of identifiable intangible assets) (Details) - USD ($) $ in Millions	Jun. 30, 2020	Dec. 31, 2019
Finite-Lived Intangible Assets [Line Items]
Intangible Assets, Gross (Excluding Goodwill)	$ 5,848.1	$ 5,885.6
Accumulated Amortization	(1,970.9)	(1,851.1)
Intangible Assets, Net (Excluding Goodwill)	3,877.2	4,034.5
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible Assets, Gross (Excluding Goodwill)	4,424.3	4,441.7
Accumulated Amortization	(1,419.9)	(1,329.5)
Intangible Assets, Net (Excluding Goodwill)	3,004.4	3,112.2
Patents, Licenses And Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible Assets, Gross (Excluding Goodwill)	449.0	453.6
Accumulated Amortization	(245.5)	(235.7)
Intangible Assets, Net (Excluding Goodwill)	203.5	217.9
Noncompete Agreements [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible Assets, Gross (Excluding Goodwill)	96.2	90.9
Accumulated Amortization	(65.0)	(60.5)
Intangible Assets, Net (Excluding Goodwill)	31.2	30.4
Trade Names [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible Assets, Gross (Excluding Goodwill)	408.1	408.2
Accumulated Amortization	(234.3)	(219.9)
Intangible Assets, Net (Excluding Goodwill)	173.8	188.3
Use Rights [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible Assets, Gross (Excluding Goodwill)	10.8	10.9
Accumulated Amortization	(6.2)	(5.5)
Intangible Assets, Net (Excluding Goodwill)	4.6	5.4
Canadian licenses [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible Assets, Gross (Excluding Goodwill)	459.7	480.3
Accumulated Amortization	0.0	0.0
Intangible Assets, Net (Excluding Goodwill)	$ 459.7	$ 480.3