Consolidated Balance Sheets (Parenthetical) - $ / shares	Nov. 30, 2015	Nov. 30, 2014
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	115,547,682	115,386,512
Grantor stock ownership trust	10,135,461	10,335,461
Treasury Stock, Shares	13,136,563	13,097,140