Acquisitions - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended								12 Months Ended						1 Months Ended	6 Months Ended	1 Months Ended	5 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012		Jun. 30, 2013	Jun. 30, 2014	Jul. 31, 2014	Dec. 31, 2014
Business Acquisition [Line Items]
Net sales	$ 1,039.6	$ 1,057.7	$ 1,027.2	$ 889.1	$ 964.6	$ 1,003.6	$ 922.1	$ 813.3	$ 4,013.6	[1]	$ 3,703.6	[1]	$ 3,134.8	[1]
Business acquisition, cash paid													20
WoodCrafters Home Products, LLC
Business Acquisition [Line Items]
Business acquisition purchase price															302.0
Net sales																100.0
WoodCrafters Home Products, LLC | Customer Relationships
Business Acquisition [Line Items]
Identifiable intangible assets							75.9								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								9.6
Amortizable identifiable intangible assets, estimated useful life															10 years
SentrySafe
Business Acquisition [Line Items]
Business acquisition purchase price																	116.7
Percentage of ownership acquired																	100.00%
Net sales																		65.0
Anaheim Manufacturing Company
Business Acquisition [Line Items]
Business acquisition purchase price									$ 30.6

[1] Based on country of destination