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Goodwill and Identifiable Intangible Assets - Change in Net Carrying Amount of Goodwill by Segment (Detail)
$ in Millions
9 Months Ended
Sep. 30, 2015
USD ($)
Goodwill [Line Items]  
Beginning Balance $ 1,467.8 [1]
Year-to-date translation adjustments (5.1)
Acquisition-related adjustments 338.1
Ending Balance 1,800.8 [1]
Doors [Member]  
Goodwill [Line Items]  
Beginning Balance $ 143.0 [1]
Year-to-date translation adjustments
Acquisition-related adjustments
Ending Balance $ 143.0 [1]
Cabinets [Member]  
Goodwill [Line Items]  
Beginning Balance 630.1 [1]
Year-to-date translation adjustments (3.2)
Acquisition-related adjustments 355.5
Ending Balance 982.4 [1]
Plumbing [Member]  
Goodwill [Line Items]  
Beginning Balance 595.6 [1]
Acquisition-related adjustments (17.0)
Ending Balance 578.6 [1]
Security [Member]  
Goodwill [Line Items]  
Beginning Balance 99.1 [1]
Year-to-date translation adjustments (1.9)
Acquisition-related adjustments (0.4)
Ending Balance $ 96.8 [1]
[1] Net of accumulated impairment losses of $399.5 million in the Doors segment.