Acquisitions and Divestitures (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Acquisitions:
Purchase price	$ 117.6	$ 53.8
Net cash paid	112.6	9.1
Goodwill recorded	82.1	2.5
Divestitures:
Proceeds	0	35.6
Gain recognized	0	12.4
Goodwill charged off	$ 0	$ 4.8
Energy Equipment Group
Divestitures:
Number of businesses acquired	3