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Consolidated Balance Sheets (Parenthetical) - $ / shares
Nov. 30, 2020
Nov. 30, 2019
Statement of Financial Position [Abstract]    
Preferred stock, par value, in dollars $ 1.00 $ 1.00
Preferred stock, shares authorized 10,000,000 10,000,000
Preferred stock, shares issued 0 0
Common stock, par value, in dollars $ 1.00 $ 1.00
Common stock, shares authorized 290,000,000 290,000,000
Common stock, shares issued 99,868,625 121,592,978
Grantor stock ownership trust 7,124,317 7,630,582
Treasury stock, shares 1,106,537 24,355,845