Acquisitions - Additional Information (Detail) - USD ($) $ in Millions	1 Months Ended				3 Months Ended								12 Months Ended
	May. 31, 2015	Mar. 31, 2015	Jul. 31, 2014	Jun. 30, 2013	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015		Dec. 31, 2014		Dec. 31, 2013
Business Acquisition [Line Items]
Operating income					$ 140.3	$ 160.3	$ 128.2	$ 67.3	$ 79.2	$ 129.5	$ 125.5	$ 69.3	$ 496.1		$ 403.5		$ 323.0
Net sales					1,224.7	$ 1,238.8	$ 1,165.1	$ 950.8	$ 1,039.6	$ 1,057.7	$ 1,027.2	$ 889.1	4,579.4	[1]	4,013.6	[1]	$ 3,703.6	[1]
Payment to acquire business		$ 6.0
Acquisition-related adjustments													295.1		38.1
Plumbing [Member]
Business Acquisition [Line Items]
Acquisition-related adjustments													(17.0)		25.9
Norcraft Companies, Inc [Member]
Business Acquisition [Line Items]
Business acquisition purchase price	$ 648.6
Operating income													28.0
Acquisition related transaction costs													15.1
Net sales													258.0
Goodwill expected to be deductible for income tax purposes					60.3								60.3
Identifiable intangible assets					210.0								210.0
Indefinite intangible assets, tradename	360.0				$ 150.0								150.0
Payment to acquire business	$ 15.5
Norcraft Companies, Inc [Member] | Operating Income
Business Acquisition [Line Items]
Inventory purchase accounting adjustment to fair value													$ 2.0
Norcraft Companies, Inc [Member] | Customer Relationships
Business Acquisition [Line Items]
Amortizable identifiable intangible assets, estimated useful life													20 years
Anaheim Manufacturing Company [Member]
Business Acquisition [Line Items]
Business acquisition purchase price															$ 28.9
Anaheim Manufacturing Company [Member] | Plumbing [Member]
Business Acquisition [Line Items]
Acquisition-related adjustments													$ (17.0)
SentrySafe [Member]
Business Acquisition [Line Items]
Business acquisition purchase price			$ 116.7
WoodCrafters Home Products, LLC
Business Acquisition [Line Items]
Business acquisition purchase price				$ 302.0
WoodCrafters Home Products, LLC | Customer Relationships
Business Acquisition [Line Items]
Identifiable intangible assets				$ 75.9
Amortizable identifiable intangible assets, estimated useful life				18 years
WoodCrafters Home Products, LLC | Technology
Business Acquisition [Line Items]
Identifiable intangible assets				$ 9.6
Amortizable identifiable intangible assets, estimated useful life				10 years

[1] Based on country of destination