LONG-LIVED ASSETS - Other Intangible Assets (Details) - USD ($) $ in Millions	Mar. 31, 2017	Dec. 31, 2016
Finite-lived and Indefinite-lived Intangible Assets by Major Class [Line Items]
Indefinite-Lived Intangible Assets (Excluding Goodwill)	$ 17.0	$ 17.2
Indefinite-lived intangible assets zero amortization	0.0	0.0
Finite-Lived Intangible Assets, Gross	148.2	146.8
Finite-Lived Intangible Assets, Accumulated Amortization	(121.3)	(118.0)
Finite-Lived Intangible Assets, Net	26.9	28.8
Intangible Assets, Gross (Excluding Goodwill)	165.2	164.0
Other Intangible Assets – net	43.9	46.0
Computer Software, Intangible Asset [Member]
Finite-lived and Indefinite-lived Intangible Assets by Major Class [Line Items]
Finite-Lived Intangible Assets, Gross	146.8	145.4
Finite-Lived Intangible Assets, Accumulated Amortization	(120.6)	(117.3)
Finite-Lived Intangible Assets, Net	26.2	28.1
Customer Relationships [Member]
Finite-lived and Indefinite-lived Intangible Assets by Major Class [Line Items]
Finite-Lived Intangible Assets, Gross	1.4	1.4
Finite-Lived Intangible Assets, Accumulated Amortization	(0.7)	(0.7)
Finite-Lived Intangible Assets, Net	0.7	0.7
Trademarks [Member]
Finite-lived and Indefinite-lived Intangible Assets by Major Class [Line Items]
Indefinite-Lived Intangible Assets (Excluding Goodwill)	14.2	14.4
Indefinite-lived intangible assets zero amortization	0.0	0.0
Noncompete Agreements [Member]
Finite-lived and Indefinite-lived Intangible Assets by Major Class [Line Items]
Indefinite-Lived Intangible Assets (Excluding Goodwill)	2.8	2.8
Indefinite-lived intangible assets zero amortization	$ 0.0	$ 0.0