Consolidated Balance Sheets (Parenthetical) (USD $)	Jan. 31, 2013	Jan. 31, 2012	Jan. 31, 2011
Common Stock, Par or Stated Value Per Share	$ 1	$ 1	$ 1
Common stock, shares authorized	100,000,000	100,000,000	100,000,000
Common stock, shares issued	65,223,000	65,132,000	65,022,000
Treasury stock, shares	28,897,000	28,897,000	28,897,000