GOODWILL AND INTANGIBLE ASSETS - By Major Asset Class (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Goodwill and Intangible Assets Disclosure [Line Items]
Original Cost	$ 327.7	$ 338.0
Accumulated Amortization	114.7	106.7
Net Book Value	$ 213.0	231.3
Minimum
Goodwill and Intangible Assets Disclosure [Line Items]
Useful Life (years)	3 years
Maximum
Goodwill and Intangible Assets Disclosure [Line Items]
Useful Life (years)	34 years
Customer contracts and relationships
Goodwill and Intangible Assets Disclosure [Line Items]
Original Cost	$ 126.2	129.4
Accumulated Amortization	27.0	20.1
Net Book Value	$ 99.2	109.3
Customer contracts and relationships | Minimum
Goodwill and Intangible Assets Disclosure [Line Items]
Useful Life (years)	13 years
Customer contracts and relationships | Maximum
Goodwill and Intangible Assets Disclosure [Line Items]
Useful Life (years)	23 years
Acquired technologies and other
Goodwill and Intangible Assets Disclosure [Line Items]
Original Cost	$ 147.4	150.0
Accumulated Amortization	69.4	65.3
Net Book Value	$ 78.0	84.7
Acquired technologies and other | Minimum
Goodwill and Intangible Assets Disclosure [Line Items]
Useful Life (years)	5 years
Acquired technologies and other | Maximum
Goodwill and Intangible Assets Disclosure [Line Items]
Useful Life (years)	34 years
Trade names
Goodwill and Intangible Assets Disclosure [Line Items]
Original Cost	$ 28.2	29.0
Accumulated Amortization	5.8	4.0
Net Book Value	$ 22.4	25.0
Trade names | Minimum
Goodwill and Intangible Assets Disclosure [Line Items]
Useful Life (years)	5 years
Trade names | Maximum
Goodwill and Intangible Assets Disclosure [Line Items]
Useful Life (years)	22 years
Trademarks and patents
Goodwill and Intangible Assets Disclosure [Line Items]
Original Cost	$ 24.0	27.1
Accumulated Amortization	11.2	16.3
Net Book Value	$ 12.8	10.8
Trademarks and patents | Minimum
Goodwill and Intangible Assets Disclosure [Line Items]
Useful Life (years)	3 years
Trademarks and patents | Maximum
Goodwill and Intangible Assets Disclosure [Line Items]
Useful Life (years)	20 years
Covenants not to compete
Goodwill and Intangible Assets Disclosure [Line Items]
Original Cost	$ 1.9	2.5
Accumulated Amortization	1.3	1.0
Net Book Value	$ 0.6	$ 1.5
Covenants not to compete | Minimum
Goodwill and Intangible Assets Disclosure [Line Items]
Useful Life (years)	3 years
Covenants not to compete | Maximum
Goodwill and Intangible Assets Disclosure [Line Items]
Useful Life (years)	5 years