Consolidated Balance Sheets (Parenthetical) (USD $)	12 Months Ended
	Nov. 30, 2011	Nov. 30, 2010
Consolidated Balance Sheets [Abstract]
Preferred stock, par value	$ 1.00	$ 1.00
Preferred stock, shares authorized	10,000,000	10,000,000
Preferred stock, shares issued
Common stock, par value	$ 1.00	$ 1.00
Common stock, shares authorized	290,000,000	290,000,000
Common stock, shares issued	115,170,693	115,148,586
Grantor stock ownership trust	10,884,151	11,082,723
Treasury stock, shares	27,214,174	27,095,467