Intangible Assets and Goodwill - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
Goodwill and Intangible Assets Disclosure [Abstract]
Intangible impairment	$ 37.6	$ 0.0	$ 37.6	$ 0.0
Finite-Lived Intangible Assets [Line Items]
Goodwill	0.0		0.0		$ 36.1
Goodwill impairment	$ 36.1	$ 35.4	$ 36.1	$ 35.4
Finite-Lived Intangible Assets | Income Approach Valuation Technique
Finite-Lived Intangible Assets [Line Items]
Estimated discounted forecasted cash flows period			10 years
Finite-Lived Intangible Assets | Income Approach Valuation Technique | Minimum
Finite-Lived Intangible Assets [Line Items]
Discounted growth rate			0.00%
Discount rate			15.50%
Finite-Lived Intangible Assets | Income Approach Valuation Technique | Maximum
Finite-Lived Intangible Assets [Line Items]
Discounted growth rate			3.00%
Discount rate			16.50%
Goodwill | Income Approach Valuation Technique
Finite-Lived Intangible Assets [Line Items]
Estimated discounted forecasted cash flows period			10 years
Goodwill | Income Approach Valuation Technique | Minimum
Finite-Lived Intangible Assets [Line Items]
Discounted growth rate			0.00%
Discount rate			15.50%
Goodwill | Income Approach Valuation Technique | Maximum
Finite-Lived Intangible Assets [Line Items]
Discounted growth rate			3.00%
Discount rate			16.50%
Tiered Storage and Security Solutions
Finite-Lived Intangible Assets [Line Items]
increase over market discount rate		2.00%
Market discount rate		14.50%
Tiered Storage and Security Solutions | Income Approach Valuation Technique
Finite-Lived Intangible Assets [Line Items]
Discounted growth rate		3.00%
Estimated discounted forecasted cash flows period		10 years
Discount rate		16.50%