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Goodwill and Identifiable Intangible Assets - Additional Information (Detail) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2019
Dec. 31, 2018
Goodwill and Identifiable Intangible Assets [Line Items]    
Goodwill [1] $ 2,084.0 $ 2,080.3
Other intangible assets, net of accumulated amortization 1,239.7 1,246.8
Increase in gross identifiable intangible assets 4.4  
Indefinite-lived Intangible Assets (Excluding Goodwill) 675.8 673.9
Cabinets [Member]    
Goodwill and Identifiable Intangible Assets [Line Items]    
Goodwill [1] $ 924.8 924.0
Cabinets [Member] | Trade Names [Member]    
Goodwill and Identifiable Intangible Assets [Line Items]    
Indefinite-lived Intangible Assets (Excluding Goodwill)   $ 152.0
Tradenames and Customer Relationship [Member] | Maximum [Member]    
Goodwill and Identifiable Intangible Assets [Line Items]    
Amortizable identifiable intangible assets, estimated useful life 30 years  
Tradenames and Customer Relationship [Member] | Minimum [Member]    
Goodwill and Identifiable Intangible Assets [Line Items]    
Amortizable identifiable intangible assets, estimated useful life 2 years  
[1] Net of accumulated impairment losses of $399.5 million in the Doors & Security segment.