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Acquisitions - Pro Forma Consolidated FInancial Results of Operations (Detail) - ERICO Global Company [Member] - USD ($)
$ / shares in Units, $ in Millions
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Business Acquisition [Line Items]    
Pro forma net sales $ 6,835.2 $ 7,596.0
Business Acquisition, Pro Forma Income (Loss) from Continuing Operations before Changes in Accounting and Extraordinary Items, Net of Tax $ (1.6) $ 609.2
Business Acquisition, Pro Forma Income (Loss) from Continuing Operations before Changes in Accounting and Extraordinary Items, Net of Tax, Per Share, Basic $ (0.01) $ 3.20
Business Acquisition, Pro Forma Income (Loss) from Continuing Operations before Changes in Accounting and Extraordinary Items, Net of Tax, Per Share, Diluted $ (0.01) $ 3.15