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Goodwill and Identifiable Intangible Assets - Change in Net Carrying Amount of Goodwill by Segment (Detail)
$ in Millions
3 Months Ended
Mar. 31, 2019
USD ($)
Goodwill [Line Items]  
Beginning Balance $ 2,080.3 [1]
Translation adjustments 3.4
Acquisition-related adjustments 0.3
Ending Balance 2,084.0 [1]
Cabinets [Member]  
Goodwill [Line Items]  
Beginning Balance 924.0 [1]
Translation adjustments 0.8
Ending Balance 924.8 [1]
Plumbing [Member]  
Goodwill [Line Items]  
Beginning Balance 743.7 [1]
Translation adjustments 2.3
Ending Balance 746.0 [1]
Doors & Security [Member]  
Goodwill [Line Items]  
Beginning Balance 412.6 [1]
Translation adjustments 0.3
Acquisition-related adjustments 0.3
Ending Balance $ 413.2 [1]
[1] Net of accumulated impairment losses of $399.5 million in the Doors & Security segment.