Annual report pursuant to Section 13 and 15(d)

Concentration of Risk - Summary of Customers Accounted for More than Five Percent of Net Sales (Detail)

v2.4.0.6
Concentration of Risk - Summary of Customers Accounted for More than Five Percent of Net Sales (Detail)
12 Months Ended
Nov. 30, 2012
Nov. 30, 2011
Nov. 30, 2010
Concentration Risk [Line Items]      
Customers accounted more than five percent of net sales   5.00%  
Walmart [Member]
     
Concentration Risk [Line Items]      
Customers accounted more than five percent of net sales 35.00% 36.00% 41.00%
Walgreen [Member]
     
Concentration Risk [Line Items]      
Customers accounted more than five percent of net sales 12.00% 13.00% 13.00%
C V S [Member]
     
Concentration Risk [Line Items]      
Customers accounted more than five percent of net sales 9.00% 7.00% 5.00%
Rite Aid [Member]
     
Concentration Risk [Line Items]      
Customers accounted more than five percent of net sales 8.00% 5.00% [1]    [1]
Foreign Sales [Member]
     
Concentration Risk [Line Items]      
Customers accounted more than five percent of net sales 4.50% 4.50% 4.40%
[1] * under 5%