Shareholders' Equity - Accumulated Other Comprehensive Loss (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2015		Mar. 31, 2014
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	$ 240.8
Total other comprehensive loss, net of tax	(5.6)		(4.8)
Ending balance	220.5
Income tax expense for unrealized gains on derivative financial instruments	0.6
Selling, general and administrative	(41.0)		(43.4)
Income tax expense (benefit)	0.1		0
Net loss	(14.4)		(17.5)
Gains (Losses) on Derivative Financial Instruments
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Other comprehensive income (loss) before reclassifications, net of tax 1	0.9	[1]
Amounts reclassified from accumulated other comprehensive income (loss), net of tax	(2.1)
Total other comprehensive loss, net of tax	(1.2)
Ending balance	3.9		5.1
Defined Benefit Plans
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Other comprehensive income (loss) before reclassifications, net of tax 1	0	[1]
Amounts reclassified from accumulated other comprehensive income (loss), net of tax	0.2
Total other comprehensive loss, net of tax	0.2
Ending balance	(20.4)		(20.6)
Foreign Currency Translation
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Other comprehensive income (loss) before reclassifications, net of tax 1	(4.6)	[1]
Amounts reclassified from accumulated other comprehensive income (loss), net of tax	0
Total other comprehensive loss, net of tax	(4.6)
Ending balance	(73.9)		(69.3)
Total
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Other comprehensive income (loss) before reclassifications, net of tax 1	(3.7)	[1]
Amounts reclassified from accumulated other comprehensive income (loss), net of tax	(1.9)
Total other comprehensive loss, net of tax	(5.6)
Ending balance	(90.4)		(84.8)
Reclassification out of Accumulated Other Comprehensive Income
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Net loss	(1.9)
Reclassification out of Accumulated Other Comprehensive Income | Gains (Losses) on Derivative Financial Instruments
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Cost of goods sold	(3.2)
Income tax expense (benefit)	1.1
Net loss	(2.1)
Reclassification out of Accumulated Other Comprehensive Income | Defined Benefit Plans
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Selling, general and administrative	0.3
Income tax expense (benefit)	(0.1)
Net loss	$ 0.2

[1] Income tax expense of $0.6 million was recorded for unrealized gains on derivative financial instruments for the three months ended March 31, 2015.