Business Acquisitions and Disposition (Details) - USD ($) $ / shares in Units, $ in Millions			12 Months Ended
	Nov. 30, 2015	Dec. 01, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Acquisition
Purchase price allocated to goodwill			$ 489.0	$ 639.0
Estimated useful lives			11 years 10 months 24 days
Value of the assets and liabilities acquired
Goodwill			$ 489.0	639.0
Redeemable financial instrument
Acquisition
Liability recorded at acquisition date fair value			$ 5.7
Customer relationships
Acquisition
Estimated useful lives			11 years 6 months
Technology
Acquisition
Estimated useful lives			9 years 7 months 6 days
Trade name
Acquisition
Estimated useful lives			14 years 6 months
Apex
Acquisition
Outstanding shares acquired (as a percent)	80.00%
Shares remaining to be acquired	20.00%
Number of years of closing	3 years
Aggregate consideration, net	$ 20.4
Purchase price allocated to goodwill	12.9
Purchase price allocated to intangible assets	10.1
Estimated useful lives			13 years
Value of the assets and liabilities acquired
Intangible assets	10.1
Goodwill	12.9
Purchase price	20.4
Apex | Redeemable financial instrument
Acquisition
Liability recorded at acquisition date fair value	$ 5.5
Apex | Customer relationships
Acquisition
Estimated useful lives	10 years		10 years
Apex | Trade name
Acquisition
Estimated useful lives	15 years		15 years
Aerco
Acquisition
Aggregate consideration, net		$ 271.5	$ 271.5
Purchase price allocated to goodwill		173.3	173.3	174.3
Purchase price allocated to intangible assets		102.4		102.4
Goodwill deductible for tax purposes		19.4
Acquisition accounting charges				0.8
Value of the assets and liabilities acquired
Accounts receivable		17.2
Inventory		16.3
Fixed assets		7.7
Deferred tax assets		8.2
Other assets		7.6
Intangible assets		102.4		102.4
Goodwill		173.3	173.3	174.3
Accounts payable		(6.8)
Accrued expenses and other		(18.4)
Deferred tax liability		(36.0)
Purchase price		271.5	$ 271.5
Revenues				5.3
Operating income				(1.4)
Supplemental pro-forma information
Net sales				1,610.1	$ 1,562.8
Net income from continuing operations				$ 59.7	$ 63.4
Basic EPS-continuing operations				$ 1.69	$ 1.79
Diluted EPS-continuing operations				$ 1.69	$ 1.78
Net interest expense related to the financing				$ 3.1	$ 3.3
Net amortization expense				3.9	$ 4.3
Net acquisition-related charges and third-party costs				$ 3.3
Aerco | Customer relationships
Acquisition
Purchase price allocated to intangible assets		$ 78.5
Estimated useful lives		16 years
Value of the assets and liabilities acquired
Intangible assets		$ 78.5
Aerco | Technology
Acquisition
Purchase price allocated to intangible assets		$ 15.8
Estimated useful lives		10 years
Value of the assets and liabilities acquired
Intangible assets		$ 15.8
Aerco | Trade name
Acquisition
Purchase price allocated to intangible assets		$ 7.4
Estimated useful lives		20 years
Value of the assets and liabilities acquired
Intangible assets		$ 7.4