Separate Financial Information of Guarantor Subsidiaries Condensed Consolidated Statements of Cash Flows (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
OPERATING ACTIVITIES
Net Cash Provided by (Used in) Operating Activities	$ 8.7	$ (11.6)
INVESTING ACTIVITIES
Purchases of Property, Plant and Equipment	(12.4)	(20.5)
Proceeds from Sale of Property, Plant, and Equipment	0.1	0.0
Proceeds from Principal Payments Received on Long-Term Note Receivable	0.0	0.1
Acquisition of Businesses, Net of Cash, Cash Equivalents and Restricted Cash Acquired	0.0	9.0
Purchase of Intangible Assets	(0.1)	(0.2)
Loan Payments from Parent to Subsidiaries	0.0	0.0
Net Cash Used in Investing Activities	(12.4)	(29.6)
FINANCING ACTIVITIES
Proceeds from Credit Facility Borrowings	125.0	13.0
Loan Payments to Parents from Subsidiaries	0.0	0.0
Repayments of Debt	(0.3)	(8.0)
Change in Finance Lease Obligations	(0.1)	0.1
Proceeds from Issuance of Common Stock	2.4	0.6
Dividends Paid	(4.0)	(4.0)
Net Cash (Used in) Provided by Financing Activities	123.0	1.5
Effect of Exchange Rate Changes on Cash, Cash Equivalents and Restricted Cash	(1.8)	0.5
Net Decrease in Cash, Cash Equivalents and Restricted Cash	117.5	(39.2)
Cash, Cash Equivalents and Restricted Cash at Beginning of Period	74.6	86.1
Cash, Cash Equivalents and Restricted Cash at End of Period	192.1	46.9
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 Sale of Property, Plant, and Equipment	0.0
Proceeds from Principal Payments Received on Long-Term Note Receivable		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 to Subsidiaries	0.9	0.2
Net Cash Used in Investing Activities	0.9	0.2
FINANCING ACTIVITIES
Proceeds from Credit Facility Borrowings	0.0	0.0
Loan Payments to Parents from Subsidiaries	(0.9)	(0.2)
Repayments of Debt	0.0	0.0
Change in Finance Lease Obligations	0.0	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	(0.9)	(0.2)
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	4.0	(4.2)
INVESTING ACTIVITIES
Purchases of Property, Plant and Equipment	(6.2)	(16.6)
Proceeds from Sale of Property, Plant, and Equipment	0.1
Proceeds from Principal Payments Received on Long-Term Note Receivable		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 to Subsidiaries	0.0	0.0
Net Cash Used in Investing Activities	(6.1)	(16.6)
FINANCING ACTIVITIES
Proceeds from Credit Facility Borrowings	125.0	13.0
Loan Payments to Parents from Subsidiaries	0.9	0.2
Repayments of Debt	0.0	(4.0)
Change in Finance Lease Obligations	0.0	0.0
Proceeds from Issuance of Common Stock	2.4	0.6
Dividends Paid	(4.0)	(4.0)
Net Cash (Used in) Provided by Financing Activities	124.3	5.8
Effect of Exchange Rate Changes on Cash, Cash Equivalents and Restricted Cash	0.4	0.0
Net Decrease in Cash, Cash Equivalents and Restricted Cash	122.6	(15.0)
Cash, Cash Equivalents and Restricted Cash at Beginning of Period	27.7	24.8
Cash, Cash Equivalents and Restricted Cash at End of Period	150.3	9.8
Guarantor Subsidiaries
OPERATING ACTIVITIES
Net Cash Provided by (Used in) Operating Activities	(0.2)	(0.4)
INVESTING ACTIVITIES
Purchases of Property, Plant and Equipment	(0.1)	(0.1)
Proceeds from Sale of Property, Plant, and Equipment	0.0
Proceeds from Principal Payments Received on Long-Term Note Receivable		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 to Subsidiaries	0.0	0.0
Net Cash Used in Investing Activities	(0.1)	(0.1)
FINANCING ACTIVITIES
Proceeds from Credit Facility Borrowings	0.0	0.0
Loan Payments to Parents from Subsidiaries	0.0	0.0
Repayments of Debt	0.0	0.0
Change in Finance Lease Obligations	0.0	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	(0.3)	(0.5)
Cash, Cash Equivalents and Restricted Cash at Beginning of Period	1.3	1.6
Cash, Cash Equivalents and Restricted Cash at End of Period	1.0	1.1
Non-Guarantor Subsidiaries
OPERATING ACTIVITIES
Net Cash Provided by (Used in) Operating Activities	4.9	(7.0)
INVESTING ACTIVITIES
Purchases of Property, Plant and Equipment	(6.1)	(3.8)
Proceeds from Sale of Property, Plant, and Equipment	0.0
Proceeds from Principal Payments Received on Long-Term Note Receivable		0.1
Acquisition of Businesses, Net of Cash, Cash Equivalents and Restricted Cash Acquired		9.0
Purchase of Intangible Assets	(0.1)	(0.2)
Loan Payments from Parent to Subsidiaries	(0.9)	(0.2)
Net Cash Used in Investing Activities	(7.1)	(13.1)
FINANCING ACTIVITIES
Proceeds from Credit Facility Borrowings	0.0	0.0
Loan Payments to Parents from Subsidiaries	0.0	0.0
Repayments of Debt	(0.3)	(4.0)
Change in Finance Lease Obligations	(0.1)	0.1
Proceeds from Issuance of Common Stock	0.0	0.0
Dividends Paid	0.0	0.0
Net Cash (Used in) Provided by Financing Activities	(0.4)	(4.1)
Effect of Exchange Rate Changes on Cash, Cash Equivalents and Restricted Cash	(2.2)	0.5
Net Decrease in Cash, Cash Equivalents and Restricted Cash	(4.8)	(23.7)
Cash, Cash Equivalents and Restricted Cash at Beginning of Period	45.6	59.7
Cash, Cash Equivalents and Restricted Cash at End of Period	$ 40.8	$ 36.0