Consolidated Balance Sheet (Parentheticals) (USD $) In Millions, except Share data, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
Preferred Stock, Value, Issued	$ 0	$ 0
Preferred stock, shares authorized	20,000,000	20,000,000
Preferred stock, shares issued	0	0
Common stock, par value	$ 1.25	$ 1.25
Common stock, shares authorized	1,200,000,000	1,200,000,000
Common stock, shares issued	428,000,000	478,000,000
Common stock held in treasury, shares	717,000,000	717,000,000