Quarterly report pursuant to Section 13 or 15(d)

Reconciliations between Basic and Diluted Earnings Per Share (Parenthetical) (Detail)

v2.4.0.6
Reconciliations between Basic and Diluted Earnings Per Share (Parenthetical) (Detail)
Nov. 30, 2012
Nov. 30, 2011
Schedule Of Earnings Per Share Basic And Diluted [Line Items]    
Debt instrument, interest rate 2.00% 2.00%