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Business Acquisition Business Acquisition Pro Forma (Details) - DelStar [Member] - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2014
Sep. 30, 2014
Business Acquisition [Line Items]    
Business Acquisition, Pro Forma Revenue $ 211.6 $ 634.6
Business Acquisition, Pro Forma Income (Loss) from Continuing Operations before Changes in Accounting and Extraordinary Items, Net of Tax $ 23.7 $ 73.3