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The expected number of positions to be eliminated as a result of restructuring activities.

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Discloses the amount charged against the accrued restructuring reserves, or earnings if not previously accrued, during the period for the specified type of restructuring cost.

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Impairment and Restructuring Charges - Narrative (Details) $ in Millions	3 Months Ended		12 Months Ended
	Sep. 30, 2016 USD ($)	Mar. 31, 2016 USD ($)	Dec. 31, 2017 USD ($) Positions	Dec. 31, 2016 USD ($) Positions	Dec. 31, 2015 USD ($) Positions
Restructuring and Related Cost [Line Items]
Current Fiscal Year End Date			--12-31
Severance expense and related benefit costs	$ 3.3	$ 7.7	$ 3.5	$ 15.3	$ 7.7
Impairment charges			0.1	3.9	3.3
Exit costs	$ 0.8	$ 0.2	0.7	2.5	3.7
Restructuring Reserve			$ 3.9	10.1	$ 11.3
Document Fiscal Year Focus			2017
One-time Termination Benefits [Member]
Restructuring and Related Cost [Line Items]
Restructuring and Related Cost, Expected Number of Positions Eliminated \| Positions			60		100
Severance expense and related benefit costs			$ 1.8	$ 9.4	$ 6.5
Employee Severance [Member]
Restructuring and Related Cost [Line Items]
Restructuring and Related Cost, Expected Number of Positions Eliminated \| Positions				175
Mobile Industries [Member]
Restructuring and Related Cost [Line Items]
Severance expense and related benefit costs			3.3	$ 9.3	4.5
Impairment charges			0.0	3.9	0.1
Exit costs			0.2	1.8	0.8
Mobile Industries [Member] \| Facility Closing [Member] \| Europe [Member]
Restructuring and Related Cost [Line Items]
Severance expense and related benefit costs					1.2
Mobile Industries [Member] \| One-time Termination Benefits [Member]
Restructuring and Related Cost [Line Items]
Severance expense and related benefit costs				3.8	3.4
Process Industries [Member]
Restructuring and Related Cost [Line Items]
Severance expense and related benefit costs			0.1	6.0	2.6
Impairment charges			0.1	0.0	3.2
Exit costs			0.0	0.7	2.9
Process Industries [Member] \| South America [Member]
Restructuring and Related Cost [Line Items]
Exit costs					2.9
Process Industries [Member] \| UNITED STATES
Restructuring and Related Cost [Line Items]
Impairment charges					3.0
Process Industries [Member] \| One-time Termination Benefits [Member]
Restructuring and Related Cost [Line Items]
Severance expense and related benefit costs				5.6	2.5
Corporate Segment [Member]
Restructuring and Related Cost [Line Items]
Severance expense and related benefit costs			0.1	0.0	0.6
Impairment charges			0.0	0.0	0.0
Exit costs			0.5	0.0	0.0
Corporate Segment [Member] \| One-time Termination Benefits [Member]
Restructuring and Related Cost [Line Items]
Severance expense and related benefit costs					$ 0.6
Altavista Bearing Plant [Member] [Member] \| Mobile Industries [Member] \| Facility Closing [Member]
Restructuring and Related Cost [Line Items]
Severance expense and related benefit costs				1.9
Restructuring and Related Cost, Incurred Cost			$ 11.5
Impairment charges				$ 3.1
Benoni [Member] \| Mobile Industries [Member] \| Facility Closing [Member]
Restructuring and Related Cost [Line Items]
Restructuring and Related Cost, Expected Number of Positions Eliminated \| Positions				85
Severance expense and related benefit costs				$ 1.1
Impairment charges				0.5
Pulaski [Member] \| Mobile Industries [Member] \| Facility Closing [Member]
Restructuring and Related Cost [Line Items]
Restructuring and Related Cost, Expected Number of Positions Eliminated \| Positions			120
Severance expense and related benefit costs			$ 1.3	$ 2.5
Restructuring and Related Cost, Incurred Cost			$ 9.8