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Consolidated Balance Sheets (Parenthetical) (USD $)
12 Months Ended
Nov. 30, 2012
Nov. 30, 2011
Statement of Financial Position [Abstract]    
Preferred stock, par value $ 1 $ 1
Preferred stock, shares authorized 10,000,000 10,000,000
Preferred stock, shares issued 0 0
Common stock, par value $ 1 $ 1
Common stock, shares authorized 290,000,000 290,000,000
Common stock, shares issued 115,178,187 115,170,693
Grantor stock ownership trust 10,615,934 10,884,151
Treasury stock, shares 27,340,468 27,214,174