Revenue Adoption of ASC 606 (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Jan. 01, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Accounts receivable, net	$ 288.2	$ 253.2		$ 278.2
Inventories	214.5	215.2		194.4
Other current assets	54.3	39.2		30.8
Other current liabilities	76.6	77.0		63.3
Deferred income taxes	13.1	10.4		13.4
Other long-term liabilities	33.6	42.6		37.7
Retained earnings	1,353.4	1,178.2		1,189.6
Net sales	1,717.4	1,599.1	$ 1,509.1
Cost of goods and services sold	1,172.0	1,086.2	1,007.7
Other expense	(1.9)	(2.0)	(29.8)
Income tax expense	41.4	80.9	54.4
Net income	206.9	$ 150.7	$ 143.6
Calculated under Revenue Guidance in Effect before Topic 606 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Accounts receivable, net	264.3
Inventories	234.4
Other current assets	63.4
Other current liabilities	87.7
Deferred income taxes	11.3
Other long-term liabilities	37.8
Retained earnings	1,345.0
Net sales	1,720.9
Cost of goods and services sold	1,172.0
Other expense	1.2
Income tax expense	42.6
Net income	209.9
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]
Accounts receivable, net	23.9			25.0
Inventories	(19.9)			(20.8)
Other current assets	(9.1)			(8.4)
Other current liabilities	(11.1)			(13.7)
Deferred income taxes	1.8			3.0
Other long-term liabilities	(4.2)			(4.9)
Retained earnings	8.4			$ 11.4
Net sales	(3.5)
Cost of goods and services sold	0.0
Other expense	0.7
Income tax expense	(1.2)
Net income	$ (3.0)