Condensed Consolidating Financial Information (Condensed Consolidating Statements of Cash Flows) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Condensed Financial Statements, Captions [Line Items]
Net cash provided by operating activities	$ 51.6	$ 49.9
Investing activities
Additions to property, plant and equipment	(3.9)	(8.7)
Payments for (proceeds from) interest in affiliates	0.0	0.0
Proceeds from the disposition of assets	0.0	0.1
Net cash used by investing activities	(3.9)	(8.6)
Financing activities
Intercompany financing	0.0	0.0
Net dividends	0.0	0.0
Borrowings of notes payable, net	0.0	19.8
Repurchases of common stock	0.0	(14.6)
Payments related to tax withholding for share-based compensation	(5.0)	(4.8)
Excess tax benefit from share-based compensation	0.9	0.0
Proceeds from the exercise of stock options	0.3	0.0
Net cash (used) provided by financing activities	(3.8)	0.4
Effect of foreign exchange rate changes on cash and cash equivalents	3.1	(4.1)
Net increase in cash and cash equivalents	47.0	37.6
Cash and cash equivalents:
Beginning of the period	55.4	53.2
End of the period	102.4	90.8
Reportable Legal Entities [Member] | Parent
Condensed Financial Statements, Captions [Line Items]
Net cash provided by operating activities	(11.3)	(11.7)
Investing activities
Additions to property, plant and equipment	0.0	0.0
Payments for (proceeds from) interest in affiliates	0.0	0.0
Proceeds from the disposition of assets		0.0
Net cash used by investing activities	0.0	0.0
Financing activities
Intercompany financing	13.7	(1.4)
Net dividends	4.3	9.3
Borrowings of notes payable, net		20.0
Repurchases of common stock		(14.6)
Payments related to tax withholding for share-based compensation	(5.0)	(4.8)
Excess tax benefit from share-based compensation	0.9
Proceeds from the exercise of stock options	0.3
Net cash (used) provided by financing activities	14.2	8.5
Effect of foreign exchange rate changes on cash and cash equivalents	0.0	0.0
Net increase in cash and cash equivalents	2.9	(3.2)
Cash and cash equivalents:
Beginning of the period	0.8	9.7
End of the period	3.7	6.5
Reportable Legal Entities [Member] | Guarantors
Condensed Financial Statements, Captions [Line Items]
Net cash provided by operating activities	16.0	17.1
Investing activities
Additions to property, plant and equipment	(1.4)	(5.3)
Payments for (proceeds from) interest in affiliates	4.5	7.9
Proceeds from the disposition of assets		0.0
Net cash used by investing activities	3.1	2.6
Financing activities
Intercompany financing	3.4	(11.9)
Net dividends	(2.5)	(7.9)
Borrowings of notes payable, net		0.0
Repurchases of common stock		0.0
Payments related to tax withholding for share-based compensation	0.0	0.0
Excess tax benefit from share-based compensation	0.0
Proceeds from the exercise of stock options	0.0
Net cash (used) provided by financing activities	0.9	(19.8)
Effect of foreign exchange rate changes on cash and cash equivalents	0.0	0.0
Net increase in cash and cash equivalents	20.0	(0.1)
Cash and cash equivalents:
Beginning of the period	0.3	0.1
End of the period	20.3	0.0
Reportable Legal Entities [Member] | Non-Guarantors
Condensed Financial Statements, Captions [Line Items]
Net cash provided by operating activities	46.9	44.5
Investing activities
Additions to property, plant and equipment	(2.5)	(3.4)
Payments for (proceeds from) interest in affiliates	(4.5)	(7.9)
Proceeds from the disposition of assets		0.1
Net cash used by investing activities	(7.0)	(11.2)
Financing activities
Intercompany financing	(17.1)	13.3
Net dividends	(1.8)	(1.4)
Borrowings of notes payable, net		(0.2)
Repurchases of common stock		0.0
Payments related to tax withholding for share-based compensation	0.0	0.0
Excess tax benefit from share-based compensation	0.0
Proceeds from the exercise of stock options	0.0
Net cash (used) provided by financing activities	(18.9)	11.7
Effect of foreign exchange rate changes on cash and cash equivalents	3.1	(4.1)
Net increase in cash and cash equivalents	24.1	40.9
Cash and cash equivalents:
Beginning of the period	54.3	43.4
End of the period	$ 78.4	$ 84.3