Impairment and Restructuring Charges - Narrative (Details) $ in Millions	1 Months Ended		3 Months Ended					12 Months Ended
	Mar. 29, 2013 Positions	May. 31, 2012	Sep. 30, 2015 USD ($)	Mar. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)	Sep. 30, 2014 USD ($)	Jun. 30, 2014 USD ($)	Dec. 31, 2015 USD ($) Positions	Dec. 31, 2014 USD ($)	Dec. 31, 2013 USD ($) Person
Restructuring and Related Cost [Line Items]
Goodwill, Impairment Loss						$ (86.3)			$ (86.3)
Severance expense and related benefit costs			$ 4.3	$ 0.4	$ 4.4	1.3	$ 2.8	$ 7.7	10.7	$ 9.2
Defined Benefit Plan, Recognized Net Gain (Loss) Due to Settlements and Curtailments								(461.8)
Impairment charges								3.3	98.9	0.1
Exit costs			$ 0.1	$ 3.1	1.0	0.1	$ 1.8	3.7	3.8	(0.6)
Restructuring Reserve					9.5			$ 11.3	9.5	10.8
WorkforceReduction [Member]
Restructuring and Related Cost [Line Items]
Restructuring and Related Cost, Expected Number of Positions Eliminated | Positions								100
Severance expense and related benefit costs								$ 6.5		$ 5.9
Workforce Reductions [Member]
Restructuring and Related Cost [Line Items]
Positions eliminated | Person										180
South America [Member]
Restructuring and Related Cost [Line Items]
Exit costs								2.9
Mobile Industries [Member]
Restructuring and Related Cost [Line Items]
Goodwill, Impairment Loss									(86.3)
Severance expense and related benefit costs								4.5	9.3	$ 6.6
Impairment charges								0.1	98.2	0.0
Exit costs								0.8	2.0	(1.5)
Mobile Industries [Member] | WorkforceReduction [Member]
Restructuring and Related Cost [Line Items]
Severance expense and related benefit costs								3.4		3.4
Mobile Industries [Member] | Sao Paulo [Member]
Restructuring and Related Cost [Line Items]
Pretax cost incurred								55.2
Revenue, Environmental Remediation Services										2.0
Mobile Industries [Member] | Europe [Member]
Restructuring and Related Cost [Line Items]
Severance expense and related benefit costs								1.2	2.9
St. Thomas Ontario Canada [Domain]
Restructuring and Related Cost [Line Items]
Expected to be completed period		1 year
St. Thomas Ontario Canada [Member]
Restructuring and Related Cost [Line Items]
Restructuring and Related Cost, Expected Number of Positions Eliminated | Positions	190
Pretax cost incurred								41.8
Severance expense and related benefit costs										1.1
Aerospace and Defense [Member]
Restructuring and Related Cost [Line Items]
Goodwill, Impairment Loss						86.3
Impairment of Intangible Assets (Excluding Goodwill)						9.9
Severance expense and related benefit costs					$ 3.7	0.3
Aerospace Overhaul [Member]
Restructuring and Related Cost [Line Items]
Goodwill and Intangible Asset Impairment						$ 1.2
Process Industries [Member]
Restructuring and Related Cost [Line Items]
Goodwill, Impairment Loss									0.0
Severance expense and related benefit costs								2.6	1.4	2.6
Impairment charges								3.2	0.3	0.1
Exit costs								2.9	1.8	0.9
Process Industries [Member] | WorkforceReduction [Member]
Restructuring and Related Cost [Line Items]
Severance expense and related benefit costs								2.5		2.5
Corporate, Non-Segment [Member]
Restructuring and Related Cost [Line Items]
Severance expense and related benefit costs								0.6	0.0	0.0
Impairment charges								0.0	0.4	0.0
Exit costs								0.0	$ 0.0	$ 0.0
Corporate, Non-Segment [Member] | WorkforceReduction [Member]
Restructuring and Related Cost [Line Items]
Severance expense and related benefit costs								0.6
Repair Business [Member]
Restructuring and Related Cost [Line Items]
Impairment charges								$ 3.0