Separate Financial Information of Guarantor Subsidiaries Condensed Consolidated Statements of Cash Flows (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2019	Mar. 31, 2018
OPERATING ACTIVITIES
Net Cash Provided by (Used in) Operating Activities	$ (11.6)	$ 5.5
INVESTING ACTIVITIES
Purchases of Property, Plant and Equipment	20.5	3.5
Proceeds from Principal Payments Received on Long-Term Note Receivable	(0.1)	(0.2)
Acquisition of Businesses, Net of Cash, Cash Equivalents and Restricted Cash Acquired	(9.0)	0.0
Purchase of Intangible Assets	(0.2)	(1.0)
Loan Payments from Parent	0.0
Loan (Payments) Borrowings from Subsidiaries		0.0
Net Cash Used in Investing Activities	29.6	4.3
FINANCING ACTIVITIES
Loan Borrowings (Payments) from Parent		0.0
Proceeds from Credit Facility Borrowings	13.0	0.0
Repayment of Debt	8.0	3.9
Change in Finance Lease Obligations	0.1	0.0
Payments of Debt Issuance Costs		0.0
Loan Payments to Subsidiaries	0.0
Proceeds from Issuance of Common Stock	0.6	0.8
Dividends Paid	(4.0)	(3.8)
Net Cash (Used in) Provided by Financing Activities	1.5	(6.9)
Effect of Exchange Rate Changes on Cash, Cash Equivalents and Restricted Cash	0.5	1.3
Net Decrease in Cash, Cash Equivalents and Restricted Cash	39.2	4.4
Cash, Cash Equivalents and Restricted Cash at Beginning of Period	86.1	59.0
Cash, Cash Equivalents and Restricted Cash at End of Period	46.9	54.6
Eliminations
OPERATING ACTIVITIES
Net Cash Provided by (Used in) Operating Activities	0.0	0.0
INVESTING ACTIVITIES
Purchases of Property, Plant and Equipment	0.0	0.0
Proceeds from Principal Payments Received on Long-Term Note Receivable	0.0	0.0
Acquisition of Businesses, Net of Cash, Cash Equivalents and Restricted Cash Acquired	0.0
Purchase of Intangible Assets	0.0	0.0
Loan Payments from Parent	0.2
Loan (Payments) Borrowings from Subsidiaries		(1.3)
Net Cash Used in Investing Activities	(0.2)	(1.3)
FINANCING ACTIVITIES
Loan Borrowings (Payments) from Parent		(1.3)
Proceeds from Credit Facility Borrowings	0.0
Repayment of Debt	0.0	0.0
Change in Finance Lease Obligations	0.0	0.0
Payments of Debt Issuance Costs		0.0
Loan Payments to Subsidiaries	(0.2)
Proceeds from Issuance of Common Stock	0.0	0.0
Dividends Paid	0.0	0.0
Net Cash (Used in) Provided by Financing Activities	(0.2)	(1.3)
Effect of Exchange Rate Changes on Cash, Cash Equivalents and Restricted Cash	0.0	0.0
Net Decrease in Cash, Cash Equivalents and Restricted Cash	0.0	0.0
Cash, Cash Equivalents and Restricted Cash at Beginning of Period	0.0	0.0
Cash, Cash Equivalents and Restricted Cash at End of Period	0.0	0.0
Parent
OPERATING ACTIVITIES
Net Cash Provided by (Used in) Operating Activities	(4.2)	5.8
INVESTING ACTIVITIES
Purchases of Property, Plant and Equipment	16.6	(0.4)
Proceeds from Principal Payments Received on Long-Term Note Receivable	0.0	0.0
Acquisition of Businesses, Net of Cash, Cash Equivalents and Restricted Cash Acquired	0.0
Purchase of Intangible Assets	0.0	1.0
Loan Payments from Parent	0.0
Loan (Payments) Borrowings from Subsidiaries		(1.3)
Net Cash Used in Investing Activities	16.6	(2.7)
FINANCING ACTIVITIES
Loan Borrowings (Payments) from Parent		0.0
Proceeds from Credit Facility Borrowings	13.0
Repayment of Debt	4.0	3.9
Change in Finance Lease Obligations	0.0	0.0
Payments of Debt Issuance Costs		0.0
Loan Payments to Subsidiaries	0.2
Proceeds from Issuance of Common Stock	0.6	0.8
Dividends Paid	(4.0)	(3.8)
Net Cash (Used in) Provided by Financing Activities	5.8	(6.9)
Effect of Exchange Rate Changes on Cash, Cash Equivalents and Restricted Cash	0.0	0.1
Net Decrease in Cash, Cash Equivalents and Restricted Cash	15.0	(3.7)
Cash, Cash Equivalents and Restricted Cash at Beginning of Period	24.8	18.4
Cash, Cash Equivalents and Restricted Cash at End of Period	9.8	14.7
Guarantor Subsidiaries
OPERATING ACTIVITIES
Net Cash Provided by (Used in) Operating Activities	(0.4)	1.8
INVESTING ACTIVITIES
Purchases of Property, Plant and Equipment	0.1	0.2
Proceeds from Principal Payments Received on Long-Term Note Receivable	0.0	0.0
Acquisition of Businesses, Net of Cash, Cash Equivalents and Restricted Cash Acquired	0.0
Purchase of Intangible Assets	0.0	0.0
Loan Payments from Parent	0.0
Loan (Payments) Borrowings from Subsidiaries		0.0
Net Cash Used in Investing Activities	0.1	0.2
FINANCING ACTIVITIES
Loan Borrowings (Payments) from Parent		0.0
Proceeds from Credit Facility Borrowings	0.0
Repayment of Debt	0.0	0.0
Change in Finance Lease Obligations	0.0	0.0
Payments of Debt Issuance Costs		0.0
Loan Payments to Subsidiaries	0.0
Proceeds from Issuance of Common Stock	0.0	0.0
Dividends Paid	0.0	0.0
Net Cash (Used in) Provided by Financing Activities	0.0	0.0
Effect of Exchange Rate Changes on Cash, Cash Equivalents and Restricted Cash	0.0	0.0
Net Decrease in Cash, Cash Equivalents and Restricted Cash	0.5	(1.6)
Cash, Cash Equivalents and Restricted Cash at Beginning of Period	1.6	0.5
Cash, Cash Equivalents and Restricted Cash at End of Period	1.1	2.1
Non-Guarantor Subsidiaries
OPERATING ACTIVITIES
Net Cash Provided by (Used in) Operating Activities	(7.0)	(2.1)
INVESTING ACTIVITIES
Purchases of Property, Plant and Equipment	3.8	2.9
Proceeds from Principal Payments Received on Long-Term Note Receivable	(0.1)	(0.2)
Acquisition of Businesses, Net of Cash, Cash Equivalents and Restricted Cash Acquired	(9.0)
Purchase of Intangible Assets	(0.2)	0.0
Loan Payments from Parent	(0.2)
Loan (Payments) Borrowings from Subsidiaries		0.0
Net Cash Used in Investing Activities	13.1	2.7
FINANCING ACTIVITIES
Loan Borrowings (Payments) from Parent		1.3
Proceeds from Credit Facility Borrowings	0.0
Repayment of Debt	4.0	0.0
Change in Finance Lease Obligations	0.1	0.0
Payments of Debt Issuance Costs		0.0
Loan Payments to Subsidiaries	0.0
Proceeds from Issuance of Common Stock	0.0	0.0
Dividends Paid	0.0	0.0
Net Cash (Used in) Provided by Financing Activities	(4.1)	1.3
Effect of Exchange Rate Changes on Cash, Cash Equivalents and Restricted Cash	0.5	1.2
Net Decrease in Cash, Cash Equivalents and Restricted Cash	23.7	2.3
Cash, Cash Equivalents and Restricted Cash at Beginning of Period	59.7	40.1
Cash, Cash Equivalents and Restricted Cash at End of Period	$ 36.0	$ 37.8

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