Consolidated Balance Sheets (Parenthetical) - $ / shares	Nov. 30, 2018	Nov. 30, 2017
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	119,195,914	117,945,525
Grantor stock ownership trust	8,157,235	8,897,954
Treasury stock, shares	24,113,487	22,021,062