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CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares
shares in Millions
Dec. 31, 2018
Dec. 31, 2017
Stockholders’ equity:    
Common stock, par value (in dollars per share) $ 0.10 $ 0.10
Common stock, shares issued (in shares) 1,579 1,578
Common stock hold in treasury (in shares) 130 129