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Condensed Consolidated Balance Sheets (Parenthetical) (USD $)
In Millions, except Share data, unless otherwise specified
Jun. 30, 2014
Dec. 31, 2013
Receivables, allowances $ 77 $ 86
Common Stock, no par value      
Common Stock, shares issued 1,996,537,778 1,996,537,778
Treasury stock, shares 309,616,525 291,141,184