Condensed Consolidated Balance Sheet Parenthetical (Parentheticals) (USD $)	Sep. 30, 2011	Dec. 31, 2010
Common stock, par value	$ 1.00	$ 1.00
Common stock, shares authorized	800,000,000	800,000,000
Common stock, Outstanding shares, before treasury	306,400,000	307,200,000
Preferred stock, par value	$ 1.00	$ 1.00
Preferred stock, shares authorized	10,000,000	10,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Treasury stock, Shares	16,900,000	16,700,000