Net Sales and Operating Income by Segment (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended
Mar. 31, 2014	Mar. 31, 2013
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Net sales	$ 966.2	$ 890.0
Operating income (Loss)	62.1	56.6
Net Sales, Percentage Change vs. Prior Year	8.60%
Operating Income (Loss), Percentage Change vs. Prior Year	9.70%
Corporate
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Operating income (Loss)	(15.2)	(16.5)
Corporate expenses	(15.2)	(16.5)
Operating Income (Loss), Percentage Change vs. Prior Year	7.90%
Corporate expenses, Percentage Change vs. Prior Year	7.90%
General and administrative expense \| Corporate
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Corporate expenses	(16.9)	(14.3)
Defined benefit plan costs \| Corporate
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Corporate expenses	1.7	(2.2)
Kitchen and Bath Cabinetry \| Operating Segments
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Net sales	410.9	345.3
Operating income (Loss)	19.9	14.3
Net Sales, Percentage Change vs. Prior Year	19.00%
Operating Income (Loss), Percentage Change vs. Prior Year	39.20%
Plumbing and Accessories \| Operating Segments
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Net sales	309.9	308.9
Operating income (Loss)	55.3	55.0
Net Sales, Percentage Change vs. Prior Year	0.30%
Operating Income (Loss), Percentage Change vs. Prior Year	0.50%
Advanced Material Windows and Door Systems \| Operating Segments
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Net sales	130.0	124.2
Operating income (Loss)	(7.7)	(8.5)
Net Sales, Percentage Change vs. Prior Year	4.70%
Operating Income (Loss), Percentage Change vs. Prior Year	9.40%
Security and Storage \| Operating Segments
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Net sales	115.4	111.6
Operating income (Loss)	$ 9.8	$ 12.3
Net Sales, Percentage Change vs. Prior Year	3.40%
Operating Income (Loss), Percentage Change vs. Prior Year	(20.30%)