Adoption of ASC 606 (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Jan. 01, 2018	Dec. 31, 2017
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net Sales	$ 431.7	$ 398.2	$ 1,294.9	$ 1,183.5
Accounts receivable, net	302.9		302.9		$ 278.2	$ 253.2
Inventories	206.8		206.8		194.4	215.2
Other current assets	43.1		43.1		30.8	39.2
Other current liabilities	76.4		76.4		63.3	77.0
Deferred income taxes	11.7		11.7		13.4	10.4
Other long-term liabilities	43.8		43.8		37.7	42.6
Retained earnings	1,312.7		1,312.7		1,189.6	$ 1,178.2
Cost of goods and services sold	296.1	273.1	882.7	799.2
Research and Development Expense	10.1	9.1	30.5	29.4
Other (income) expense	(0.2)	(9.5)	4.0	3.1
Income tax expense	(8.0)	(14.0)	(26.5)	(19.1)
Net income	(55.2)	$ (51.0)	(154.9)	$ (150.7)
Difference between Revenue Guidance in Effect before and after Topic 606 [Member] | Accounting Standards Update 2014-09 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net Sales	8.2		0.5
Accounts receivable, net	25.3		25.3		25.0
Inventories	(21.7)		(21.7)		(20.8)
Other current assets	(11.1)		(11.1)		(8.4)
Other current liabilities	(13.8)		(13.8)		(13.7)
Deferred income taxes	2.0		2.0		3.0
Other long-term liabilities	(4.4)		(4.4)		(4.9)
Retained earnings	8.7		8.7		$ 11.4
Cost of goods and services sold	5.8		3.8
Research and Development Expense	0.1		0.0
Other (income) expense	0.2		0.5
Income tax expense	(0.2)		1.0
Net income	(2.0)		2.7
Calculated under Revenue Guidance in Effect before Topic 606 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net Sales	423.5		1,294.4
Accounts receivable, net	277.6		277.6
Inventories	228.5		228.5
Other current assets	54.2		54.2
Other current liabilities	90.2		90.2
Deferred income taxes	9.7		9.7
Other long-term liabilities	48.2		48.2
Retained earnings	1,304.0		1,304.0
Cost of goods and services sold	290.3		878.9
Research and Development Expense	10.0		30.5
Other (income) expense	(0.4)		3.5
Income tax expense	(7.8)		(27.5)
Net income	$ (53.2)		$ (157.6)