SUPPLEMENTAL GUARANTOR FINANCIAL INFORMATION (Statements of Comprehensive Income)(Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Supplemental Guarantor Financial Information Statements Of Comprehensive Income [Line Items]
Net income (loss)	$ 13.4	$ (37.9)
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss) Arising During Period, Net of Tax	6.0	15.5
Unrealized (losses) gains on derivative contracts, net	(2.0)	3.0
Amortization of prior service costs and actuarial losses, net	3.9	3.8
Other comprehensive income	7.9	22.3
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	21.3	(15.6)
Parent Guarantor
Supplemental Guarantor Financial Information Statements Of Comprehensive Income [Line Items]
Net income (loss)	9.7	(37.9)
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss) Arising During Period, Net of Tax	0.0	0.0
Unrealized (losses) gains on derivative contracts, net	(2.0)	3.0
Amortization of prior service costs and actuarial losses, net	3.7	3.3
Other comprehensive income	1.7	6.3
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	11.4	(31.6)
Issuer
Supplemental Guarantor Financial Information Statements Of Comprehensive Income [Line Items]
Net income (loss)	9.4	18.7
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss) Arising During Period, Net of Tax	0.0	0.0
Unrealized (losses) gains on derivative contracts, net	0.0	0.0
Amortization of prior service costs and actuarial losses, net	0.0	0.0
Other comprehensive income	0.0	0.0
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	9.4	18.7
Subsidiary Non-Guarantor
Supplemental Guarantor Financial Information Statements Of Comprehensive Income [Line Items]
Net income (loss)	51.9	(3.9)
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss) Arising During Period, Net of Tax	6.0	15.5
Unrealized (losses) gains on derivative contracts, net	0.0	0.0
Amortization of prior service costs and actuarial losses, net	0.2	0.5
Other comprehensive income	6.2	16.0
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	58.1	12.1
Eliminations
Supplemental Guarantor Financial Information Statements Of Comprehensive Income [Line Items]
Net income (loss)	(57.6)	(14.8)
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss) Arising During Period, Net of Tax	0.0	0.0
Unrealized (losses) gains on derivative contracts, net	0.0	0.0
Amortization of prior service costs and actuarial losses, net	0.0	0.0
Other comprehensive income	0.0	0.0
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	$ (57.6)	$ (14.8)