CONSOLIDATED STATEMENTS OF CASH FLOWS (unaudited) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Statement of Cash Flows [Abstract]
Proceeds from Sale of Investment Projects	$ 0.0	$ 2.0
Operating Activities
Net loss	(32.9)	(54.0)
Adjustments to reconcile net loss to cash from operating activities:
Depreciation and amortization	29.9	39.4
Stock-based compensation	(12.4)	(11.2)
Impairment of Long-Lived Assets Held-for-use	5.1	0.0
Non-cash interest expense and amortization of debt issuance costs	3.7	2.0
Loss on disposal of fixed assets	0.1	1.3
Deferred income taxes	0.8	2.2
Other, net	3.2	4.4
Cash effect of changes in assets and liabilities (excluding effects of foreign exchange):
Receivables, net	17.1	53.5
Inventories, net	(32.3)	(8.2)
Prepaid and other current assets	(2.4)	(4.2)
Accounts payable	2.9	(29.1)
Accrued compensation and employee benefits	(5.8)	(5.3)
Other accrued expenses	3.9	(0.6)
Accrued and deferred taxes, net	(3.0)	0.4
Other non-current assets and non-current liabilities	2.5	(2.8)
Net cash provided by operating activities	21.4	10.2
Investing Activities
Proceeds from the sale of property, plant and equipment	0.1	0.7
Proceeds from the sale of business	(31.4)	(20.2)
Payments to Acquire Businesses, Net of Cash Acquired	2.5	0.0
Net cash used in investing activities	(33.8)	(17.5)
Financing Activities
Payments under revolving credit facility	0.0	(20.0)
Proceeds from Lines of Credit	0.0	20.0
Principal payments on term loan debt	(3.6)	(166.5)
Debt issuance costs	0.0	(6.7)
Net proceeds from exercise of stock-based awards	3.1	0.0
Payments of capital lease obligations	(0.7)	(1.6)
Payment of taxes related to net share settlement of equity awards	(4.5)	(0.9)
Net cash used in financing activities	(5.7)	(8.6)
Effect of exchange rate changes on cash and cash equivalents	0.5	(0.2)
Net decrease in cash and cash equivalents	(17.6)	(16.1)
Cash and cash equivalents at beginning of period	66.2	63.3
Cash and cash equivalents at end of period	48.6
Proceeds from Convertible Debt	0.0	172.5
Proceeds from Issuance of Warrants	0.0	39.1
Payments for Hedge, Financing Activities	0.0	44.5
Impairment of Intangible Assets, Finite-lived	$ 16.2	$ 0.0