Supplemental Guarantor Information (Condensed Consolidating Statements of Cash Flows) (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Apr. 17, 2017
OPERATING ACTIVITIES
Net cash (used) provided by operating activities	$ 23.3	$ 39.8
INVESTING ACTIVITIES
Purchases of property, plant and equipment	(18.9)	(20.3)
Business acquisition	(10.5)	0.0
Net cash used by investing activities	(29.4)	(20.3)
FINANCING ACTIVITIES
Intercompany account change	0.0	0.0
Payments on revolving credit facility, net	(32.5)	(17.4)
Payments on term loans and other debt	(27.7)	(3.4)
Proceeds from term loans and other debt	0.0	7.3
Proceeds from capital lease facilities, net	0.1
Payments on capital leases, net		(2.5)
Issuance of 6.625% Senior Notes due 2027	350.0	0.0
Debt financing costs	(7.5)	0.0
Repurchase of 8.125% Senior Notes due 2021	(250.0)	0.0
Premium on early extinguishment of debt	(8.0)	0.0
Dividend paid to Parent	(5.0)	0.0
Payment of acquisition earn-out	0.0	(2.0)
Dividend	(0.2)	0.0
Net cash provided (used) by financing activities	19.2	(18.0)
Effect of exchange rate changes on cash	5.1	(0.4)
Increase (decrease) in cash and cash equivalents	18.2	1.1
Cash and cash equivalents at beginning of period	54.4	48.4
Cash and cash equivalents at end of period	$ 72.6	49.5
Senior Notes
Condensed Financial Statements, Captions [Line Items]
Stated interest rate	8.125%		8.125%
Senior Notes 6.625% Due 2027 | Senior Notes
Condensed Financial Statements, Captions [Line Items]
Stated interest rate	6.625%
Reportable Legal Entities | Parent
OPERATING ACTIVITIES
Net cash (used) provided by operating activities	$ (32.8)	(36.8)
INVESTING ACTIVITIES
Purchases of property, plant and equipment	(0.3)	(0.1)
Business acquisition	0.0
Net cash used by investing activities	(0.3)	(0.1)
FINANCING ACTIVITIES
Intercompany account change	9.5	57.7
Payments on revolving credit facility, net	(32.5)	(17.4)
Payments on term loans and other debt	(23.4)	(3.4)
Proceeds from term loans and other debt		0.0
Proceeds from capital lease facilities, net	0.0
Payments on capital leases, net		0.0
Issuance of 6.625% Senior Notes due 2027	350.0
Debt financing costs	(7.5)
Repurchase of 8.125% Senior Notes due 2021	(250.0)
Premium on early extinguishment of debt	(8.0)
Dividend paid to Parent	(5.0)
Payment of acquisition earn-out		0.0
Dividend	0.0
Net cash provided (used) by financing activities	33.1	36.9
Effect of exchange rate changes on cash	0.0	0.0
Increase (decrease) in cash and cash equivalents	0.0	0.0
Cash and cash equivalents at beginning of period	0.0	0.0
Cash and cash equivalents at end of period	0.0	0.0
Reportable Legal Entities | Combined Guarantor Subsidiaries
OPERATING ACTIVITIES
Net cash (used) provided by operating activities	36.2	81.5
INVESTING ACTIVITIES
Purchases of property, plant and equipment	(13.7)	(6.3)
Business acquisition	(10.5)
Net cash used by investing activities	(24.2)	(6.3)
FINANCING ACTIVITIES
Intercompany account change	(10.6)	(74.4)
Payments on revolving credit facility, net	0.0	0.0
Payments on term loans and other debt	(0.4)	0.0
Proceeds from term loans and other debt		1.3
Proceeds from capital lease facilities, net	(1.0)
Payments on capital leases, net		(2.2)
Issuance of 6.625% Senior Notes due 2027	0.0
Debt financing costs	0.0
Repurchase of 8.125% Senior Notes due 2021	0.0
Premium on early extinguishment of debt	0.0
Dividend paid to Parent	0.0
Payment of acquisition earn-out		0.0
Dividend	0.0
Net cash provided (used) by financing activities	(12.0)	(75.3)
Effect of exchange rate changes on cash	0.0	0.0
Increase (decrease) in cash and cash equivalents	0.0	(0.1)
Cash and cash equivalents at beginning of period	0.0	0.1
Cash and cash equivalents at end of period	0.0	0.0
Reportable Legal Entities | Combined Non-Guarantor Subsidiaries
OPERATING ACTIVITIES
Net cash (used) provided by operating activities	18.9	11.4
INVESTING ACTIVITIES
Purchases of property, plant and equipment	(4.9)	(13.9)
Business acquisition	0.0
Net cash used by investing activities	(4.9)	(13.9)
FINANCING ACTIVITIES
Intercompany account change	2.1	0.4
Payments on revolving credit facility, net	0.0	0.0
Payments on term loans and other debt	(3.9)	0.0
Proceeds from term loans and other debt		6.0
Proceeds from capital lease facilities, net	1.1
Payments on capital leases, net		(0.3)
Issuance of 6.625% Senior Notes due 2027	0.0
Debt financing costs	0.0
Repurchase of 8.125% Senior Notes due 2021	0.0
Premium on early extinguishment of debt	0.0
Dividend paid to Parent	0.0
Payment of acquisition earn-out		(2.0)
Dividend	(0.2)
Net cash provided (used) by financing activities	(0.9)	4.1
Effect of exchange rate changes on cash	5.1	(0.4)
Increase (decrease) in cash and cash equivalents	18.2	1.2
Cash and cash equivalents at beginning of period	54.4	48.3
Cash and cash equivalents at end of period	72.6	49.5
Reclassifications/ Eliminations
OPERATING ACTIVITIES
Net cash (used) provided by operating activities	1.0	(16.3)
INVESTING ACTIVITIES
Purchases of property, plant and equipment	0.0	0.0
Business acquisition	0.0
Net cash used by investing activities	0.0	0.0
FINANCING ACTIVITIES
Intercompany account change	(1.0)	16.3
Payments on revolving credit facility, net	0.0	0.0
Payments on term loans and other debt	0.0	0.0
Proceeds from term loans and other debt		0.0
Proceeds from capital lease facilities, net	0.0
Payments on capital leases, net		0.0
Issuance of 6.625% Senior Notes due 2027	0.0
Debt financing costs	0.0
Repurchase of 8.125% Senior Notes due 2021	0.0
Premium on early extinguishment of debt	0.0
Dividend paid to Parent	0.0
Payment of acquisition earn-out		0.0
Dividend	0.0
Net cash provided (used) by financing activities	(1.0)	16.3
Effect of exchange rate changes on cash	0.0	0.0
Increase (decrease) in cash and cash equivalents	0.0	0.0
Cash and cash equivalents at beginning of period	0.0	0.0
Cash and cash equivalents at end of period	$ 0.0	$ 0.0