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CONDENSED CONSOLIDATED BALANCE SHEET (Parenthetical) (USD $)
Jun. 30, 2011
Dec. 31, 2010
Preferred stock, par value $ 0 $ 0
Preferred stock, authorized 165,000,000 165,000,000
Preferred stock, issued 0 0
Common stock, par value $ 0.01 $ 0.01
Common stock, authorized 3,500,000,000 3,500,000,000
Common stock, issued 1,660,600,000 1,660,600,000
Common stock in treasury, shares 628,900,000 607,000,000