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Discontinued Operations - Additional Information (Detail) (USD $)
In Millions, unless otherwise specified
3 Months Ended 0 Months Ended 6 Months Ended 3 Months Ended 0 Months Ended
Feb. 28, 2013
Feb. 29, 2012
Mar. 06, 2012
Muraspec commercial wallcovering business
May 31, 2012
Muraspec commercial wallcovering business
Feb. 29, 2012
North American Wallcovering Business [Member]
Feb. 28, 2013
Discontinued Operations [Member]
Feb. 29, 2012
Discontinued Operations [Member]
Dec. 12, 2011
Maximum
Nov. 30, 2013
Transition of manufacturing of certain coated fabrics products to other company facilities
Nov. 30, 2013
Expected
Maximum
Nov. 30, 2013
Extended
Maximum
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]                      
Disposal Group Including Discontinued Operation Royalty Period               3 years      
Proceeds from sale of business $ 0 $ 10.0 $ 2.4   $ 10.0            
Net gain on sale 0 6.0     6.0            
Gain on sale of discontinued operations, before tax 0 9.9     9.9            
Increase in note receivable     3.8                
Loss on sale of business       0.9              
Disposal Group, Including Discontinued Operation, Revenue           2.1 16.7        
Discontinued Operation, Income (Loss) from Discontinued Operation, before Income Tax           $ 0.6 $ 4.8        
Estimated Operation Transition Period                 1 year 1 year 3 months