CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $)	Dec. 31, 2011	Dec. 31, 2010
CONSOLIDATED BALANCE SHEETS
Common stock, par value (in dollars per share)	$ 1.25	$ 1.25
Common stock, issued shares	111,931,267	111,611,102
Treasury stock, shares	31,454,097	31,097,043