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Goodwill and Identifiable Intangible Assets - Additional Information (Detail)
$ in Millions
9 Months Ended 12 Months Ended
Sep. 30, 2017
USD ($)
Dec. 31, 2016
USD ($)
asset_group
Goodwill [Line Items]    
Goodwill [1] $ 1,852.8 $ 1,833.8
Other intangible assets, net of accumulated amortization 1,105.4 1,107.0
Carrying value of tradenames 682.6 671.8
Plumbing [Member]    
Goodwill [Line Items]    
Goodwill [1] 684.4 670.2
Goodwill decrease due to foreign exchange adjustments 19.0  
Increase in gross identifiable intangible assets 24.1  
Cabinets [Member]    
Goodwill [Line Items]    
Goodwill [1] 927.6 $ 924.3
Number of tradenames, with the fair value exceeded their carrying value | asset_group   1
Doors [Member]    
Goodwill [Line Items]    
Goodwill [1] 143.0 $ 143.0
Number of tradenames, with the fair value exceeded their carrying value | asset_group   1
Cabinets and Doors Segment [Member]    
Goodwill [Line Items]    
Carrying value of tradenames $ 168.0  
Minimum [Member] | Tradenames and Customer Relationship [Member]    
Goodwill [Line Items]    
Amortizable identifiable intangible assets, estimated useful life 2 years  
Maximum [Member] | Cabinets [Member] | Tradenames [Member]    
Goodwill [Line Items]    
Percentage of fair value of reporting unit in excess of carrying amount   10.00%
Maximum [Member] | Doors [Member] | Tradenames [Member]    
Goodwill [Line Items]    
Percentage of fair value of reporting unit in excess of carrying amount   10.00%
Maximum [Member] | Tradenames and Customer Relationship [Member]    
Goodwill [Line Items]    
Amortizable identifiable intangible assets, estimated useful life 30 years  
[1] Net of accumulated impairment losses of $399.5 million in the Doors segment.