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Goodwill and Identifiable Intangible Assets - Additional Information (Detail)
$ in Millions
3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2017
USD ($)
Jun. 30, 2017
USD ($)
Dec. 31, 2016
USD ($)
asset_group
Goodwill [Line Items]      
Goodwill [1] $ 1,832.1 $ 1,832.1 $ 1,833.8
Other intangible assets, net of accumulated amortization 1,093.2 1,093.2 1,107.0
Carrying value of tradenames 673.4 673.4 671.8
Plumbing [Member]      
Goodwill [Line Items]      
Goodwill [1] 667.5 667.5 670.2
Goodwill decrease due to foreign exchange adjustments (1.7)    
Increase in gross identifiable intangible assets   0.8  
Cabinets [Member]      
Goodwill [Line Items]      
Goodwill [1] 925.0 925.0 $ 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 $ 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 $ 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.