Acquisitions and Divestitures (Details Textual) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended		1 Months Ended	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Aug. 31, 2014 Meyer	Sep. 30, 2014 Meyer	Sep. 30, 2014 Individually immaterial acquisitions Energy Equipment Group acquisition	Sep. 30, 2014 Individually immaterial acquisitions Construction Products Group acquisition
Business Acquisition [Line Items]
Purchase price	$ 593.0	$ 0	$ 718.3	$ 83.4	$ 593.0
Acquisition-related transaction costs						8.3
Acquisition-related non-recurring income tax expense						$ 1.5
Number of businesses acquired							3	1