GOODWILL AND INTANGIBLE ASSETS (Details 2) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Schedule Of Finite Lived And Indefinite Lived Intangible Assets By Major Class [Line Items]
Finite-Lived Intangible Assets, Gross	$ 768.3	$ 775.0
Finite-Lived Intangible Assets, Accumulated Amortization	(256.7)	(196.5)
Finite-Lived Intangible Assets, Net	511.6	578.5
Customers, customer contracts and relationships
Schedule Of Finite Lived And Indefinite Lived Intangible Assets By Major Class [Line Items]
Finite-Lived Intangible Assets, Gross	675.2	679.5
Finite-Lived Intangible Assets, Accumulated Amortization	(211.9)	(163.6)
Finite-Lived Intangible Assets, Net	463.3	515.9
Trade name
Schedule Of Finite Lived And Indefinite Lived Intangible Assets By Major Class [Line Items]
Finite-Lived Intangible Assets, Gross	7.0	7.1
Finite-Lived Intangible Assets, Accumulated Amortization	(4.6)	(3.2)
Finite-Lived Intangible Assets, Net	2.4	3.9
Acquired technology
Schedule Of Finite Lived And Indefinite Lived Intangible Assets By Major Class [Line Items]
Finite-Lived Intangible Assets, Gross	85.4	86.1
Finite-Lived Intangible Assets, Accumulated Amortization	(39.6)	(27.7)
Finite-Lived Intangible Assets, Net	45.8	58.4
Other
Schedule Of Finite Lived And Indefinite Lived Intangible Assets By Major Class [Line Items]
Finite-Lived Intangible Assets, Gross	0.7	2.3
Finite-Lived Intangible Assets, Accumulated Amortization	(0.6)	(2.0)
Finite-Lived Intangible Assets, Net	$ 0.1	$ 0.3
Minimum | Customers, customer contracts and relationships
Schedule Of Finite Lived And Indefinite Lived Intangible Assets By Major Class [Line Items]
Finite-Lived Intangible Asset, Useful Life	10 years
Minimum | Trade name
Schedule Of Finite Lived And Indefinite Lived Intangible Assets By Major Class [Line Items]
Finite-Lived Intangible Asset, Useful Life	5 years
Minimum | Acquired technology
Schedule Of Finite Lived And Indefinite Lived Intangible Assets By Major Class [Line Items]
Finite-Lived Intangible Asset, Useful Life	7 years
Minimum | Other
Schedule Of Finite Lived And Indefinite Lived Intangible Assets By Major Class [Line Items]
Finite-Lived Intangible Asset, Useful Life	10 years
Maximum | Customers, customer contracts and relationships
Schedule Of Finite Lived And Indefinite Lived Intangible Assets By Major Class [Line Items]
Finite-Lived Intangible Asset, Useful Life	15 years
Maximum | Trade name
Schedule Of Finite Lived And Indefinite Lived Intangible Assets By Major Class [Line Items]
Finite-Lived Intangible Asset, Useful Life	5 years
Maximum | Acquired technology
Schedule Of Finite Lived And Indefinite Lived Intangible Assets By Major Class [Line Items]
Finite-Lived Intangible Asset, Useful Life	7 years
Maximum | Other
Schedule Of Finite Lived And Indefinite Lived Intangible Assets By Major Class [Line Items]
Finite-Lived Intangible Asset, Useful Life	10 years