GOODWILL AND INTANGIBLE ASSETS (Components of identifiable intangible assets) (Details) - USD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019
Finite-Lived Intangible Assets [Line Items]
Intangible Assets, Gross (Excluding Goodwill)	$ 5,811.7	$ 5,885.6
Accumulated Amortization	(1,906.6)	(1,851.1)
Intangible Assets, Net (Excluding Goodwill)	3,905.1	4,034.5
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible Assets, Gross (Excluding Goodwill)	4,414.4	4,441.7
Accumulated Amortization	(1,371.0)	(1,329.5)
Intangible Assets, Net (Excluding Goodwill)	3,043.4	3,112.2
Patents, Licenses And Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible Assets, Gross (Excluding Goodwill)	444.4	453.6
Accumulated Amortization	(238.7)	(235.7)
Intangible Assets, Net (Excluding Goodwill)	205.7	217.9
Noncompete Agreements [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible Assets, Gross (Excluding Goodwill)	90.7	90.9
Accumulated Amortization	(62.3)	(60.5)
Intangible Assets, Net (Excluding Goodwill)	28.4	30.4
Trade Names [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible Assets, Gross (Excluding Goodwill)	407.3	408.2
Accumulated Amortization	(228.8)	(219.9)
Intangible Assets, Net (Excluding Goodwill)	178.5	188.3
Use Rights [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible Assets, Gross (Excluding Goodwill)	10.8	10.9
Accumulated Amortization	(5.8)	(5.5)
Intangible Assets, Net (Excluding Goodwill)	5.0	5.4
Canadian licenses [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible Assets, Gross (Excluding Goodwill)	444.1	480.3
Accumulated Amortization	0.0	0.0
Intangible Assets, Net (Excluding Goodwill)	$ 444.1	$ 480.3