Acquisitions and Dispositions (Details 1) In Millions, unless otherwise specified	6 Months Ended				6 Months Ended
	Jun. 30, 2013 Optima Solutions [Member] USD ($)	Jun. 30, 2012 Optima Solutions [Member] USD ($)	Mar. 09, 2012 Optima Solutions [Member] USD ($)	Mar. 09, 2012 Optima Solutions [Member] GBP (£)	Jun. 30, 2012 Eastern Reservoir Services [Member] USD ($)	Apr. 23, 2012 Eastern Reservoir Services [Member] USD ($)	Jul. 31, 2012 Greywolf Production Systems [Member] USD ($)
Business Acquisitions [Line Items]
Percentage of outstanding common stock acquired			100.00%	100.00%
Purchase price			$ 65.0	£ 41.2		$ 42.5	$ 55.5
Contingent consideration, maximum possible payment				4
Purchase price allocation, net working capital			3.0
Purchase price allocation, property, plant, and equipment			16.8			18.5	17.7
Purchase price allocation, intangible assets			20.4			3.4	3.5
Purchase price allocation, deferred and other tax liabilities			7.2
Purchase price allocation, liabilities associated with contingent purchase price consideration			3.5
Purchase price allocation, nondeductible goodwill			35.6			20.6	34.3
Cumulative adjustment in liability associated with contingent purchase price consideration	1.6
Adjustment of liability associated with contingent purchase price consideration during the period	0.5
Revenues from acquired entitiy		8.6			7.0
Depreciation and amortization from acquired entity		1.7			0.7
Pretax earnings from acquired entity		2.2			2.5
Transaction costs associated with acquisition			$ 1.3		$ 0.3