Summary of Segment Results from Continuing Operations (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013 Segment	Sep. 30, 2012
Segment Reporting Information [Line Items]
Number of operating segments			4
External Sales	$ 957.7	$ 978.1	$ 2,849.2	$ 2,856.0
Inter- Segment Sales	78.4	71.8	240.1	238.4
Total Sales	1,036.1	1,049.9	3,089.3	3,094.4
EBIT	106.2	104.9	284.1	267.6
Bargain purchase gain recognized	8.7		8.7	0
Change in LIFO reserve	4.9	5.7	9.7	7.8
Residential Furnishings
Segment Reporting Information [Line Items]
External Sales	500.3	479.7	1,470.0	1,442.7
Inter- Segment Sales	8.3	2.0	14.2	6.3
Total Sales	508.6	481.7	1,484.2	1,449.0
EBIT	47.0	39.7	131.7	119.9
Commercial Fixturing & Components
Segment Reporting Information [Line Items]
External Sales	128.2	161.5	369.0	388.4
Inter- Segment Sales	1.3	1.3	3.5	3.5
Total Sales	129.5	162.8	372.5	391.9
EBIT	8.4	19.2	17.9	29.5
Industrial Materials
Segment Reporting Information [Line Items]
External Sales	150.7	156.7	466.1	488.6
Inter- Segment Sales	55.3	58.9	179.8	195.4
Total Sales	206.0	215.6	645.9	684.0
EBIT	16.2	19.2	59.8	50.2
Specialized Products
Segment Reporting Information [Line Items]
External Sales	178.5	180.2	544.1	536.3
Inter- Segment Sales	13.5	9.6	42.6	33.2
Total Sales	192.0	189.8	586.7	569.5
EBIT	21.9	22.9	66.0	67.2
Intersegment eliminations
Segment Reporting Information [Line Items]
Intersegment eliminations	$ (0.9)	$ (1.8)	$ (9.7)	$ (7.0)