Business Combinations (Intangible Assets Acquired) (Details) (USD $) In Millions, unless otherwise specified			12 Months Ended		12 Months Ended		12 Months Ended		12 Months Ended				12 Months Ended		12 Months Ended		12 Months Ended				12 Months Ended		12 Months Ended
	Dec. 31, 2012 Schilling Robotics	Apr. 25, 2012 Schilling Robotics	Dec. 31, 2012 Schilling Robotics Technology	Apr. 25, 2012 Schilling Robotics Technology	Dec. 31, 2012 Schilling Robotics Trademarks/trade name	Apr. 25, 2012 Schilling Robotics Trademarks/trade name	Dec. 31, 2012 Schilling Robotics Customer relationships	Apr. 25, 2012 Schilling Robotics Customer relationships	Dec. 31, 2012 Schilling Robotics Base technology – technical know-how	Apr. 25, 2012 Schilling Robotics Base technology – technical know-how	Dec. 31, 2012 CSI	Apr. 30, 2012 CSI	Dec. 31, 2012 CSI Technology	Apr. 30, 2012 CSI Technology	Dec. 31, 2012 CSI Trademarks/trade name	Apr. 30, 2012 CSI Trademarks/trade name	Dec. 31, 2012 CSI Customer relationships	Apr. 30, 2012 CSI Customer relationships	Dec. 31, 2012 Pure Energy	Oct. 02, 2012 Pure Energy	Dec. 31, 2012 Pure Energy Customer relationships	Oct. 02, 2012 Pure Energy Customer relationships	Dec. 31, 2012 Pure Energy Non-compete agreements	Oct. 02, 2012 Pure Energy Non-compete agreements
Acquired Finite-Lived Intangible Assets [Line Items]
Acquired finite-lived intangible asset, amount	$ 145.9	$ 145.9		$ 38.9		$ 25.4		$ 42.9		$ 38.7	$ 35.1	$ 35.1		$ 17.0		$ 2.8		$ 15.3	$ 58.2	$ 58.2		$ 57.6		$ 0.6
Weighted average amortization period			12 years		20 years		20 years		15 years				10 years		15 years		15 years				20 years		2 years