Shareholders' Equity - Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	$ 24.4
Total other comprehensive income (loss), net of tax	76.3	$ (5.6)
Ending balance	9.7
Restructuring and other	6.8	0.6
Selling, general and administrative	10.6	16.8
Discontinued operation, foreign currency translation loss	75.7	0.0
Income tax provision (benefit)	(1.6)	0.1
Net loss	91.1	14.4
Gains (Losses) on Derivative Financial Instruments
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	0.0
Other comprehensive income (loss) before reclassifications, net of tax	0.0
Amounts reclassified from accumulated other comprehensive income (loss), net of tax	0.0
Total other comprehensive income (loss), net of tax	0.0
Ending balance	0.0
Defined Benefit Plans
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(20.1)
Other comprehensive income (loss) before reclassifications, net of tax	0.1
Amounts reclassified from accumulated other comprehensive income (loss), net of tax	1.3
Total other comprehensive income (loss), net of tax	1.4
Ending balance	(18.7)
Foreign Currency Translation
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(76.0)
Other comprehensive income (loss) before reclassifications, net of tax	(0.8)
Amounts reclassified from accumulated other comprehensive income (loss), net of tax	75.7
Total other comprehensive income (loss), net of tax	74.9
Ending balance	(1.1)
Total
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(96.1)
Other comprehensive income (loss) before reclassifications, net of tax	(0.7)
Amounts reclassified from accumulated other comprehensive income (loss), net of tax	77.0
Total other comprehensive income (loss), net of tax	76.3
Ending balance	(19.8)
Reclassification out of Accumulated Other Comprehensive Income
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Net loss	77.0	(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	0.0	(3.2)
Income tax provision (benefit)	0.0	1.1
Net loss	0.0	(2.1)
Reclassification out of Accumulated Other Comprehensive Income | Defined Benefit Plans
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Restructuring and other	1.8	0.0
Selling, general and administrative	0.0	0.3
Income tax provision (benefit)	(0.5)	(0.1)
Net loss	(1.3)	(0.2)
Reclassification out of Accumulated Other Comprehensive Income | Foreign Currency Translation
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Discontinued operation, foreign currency translation loss	75.7	0.0
Income tax provision (benefit)	0.0	0.0
Net loss	(75.7)	$ 0.0
Nexsan
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Accumulated foreign currency translation losses	$ 1.1