see the notes to consolidated financial statements .
schlumberger limited and subsidiaries shares of common stock ( stated in millions ) issued in treasury shares outstanding .
what would the 2012 shares outstanding in millions have been without the acquisition of smith international?
the acquisition of smith international inc . of issued is 100 ; the acquisition of smith international inc . of in treasury is 76 ; the acquisition of smith international inc . of shares outstanding is 176 ; the balance december 31 2012 of issued is 1434 ; the balance december 31 2012 of in treasury is -106 ( 106 ) ; the balance december 31 2012 of shares outstanding is 1328 ;
issued in treasury shares outstanding
balance january 1 2010 1334 -139 ( 139 ) 1195
acquisition of smith international inc . 100 76 176
shares sold to optionees less shares exchanged 2013 6 6
shares issued under employee stock purchase plan 2013 3 3
stock repurchase program 2013 -27 ( 27 ) -27 ( 27 )
issued on conversions of debentures 2013 8 8
balance december 31 2010 1434 -73 ( 73 ) 1361
shares sold to optionees less shares exchanged 2013 6 6
vesting of restricted stock 2013 1 1
shares issued under employee stock purchase plan 2013 3 3
stock repurchase program 2013 -37 ( 37 ) -37 ( 37 )
balance december 31 2011 1434 -100 ( 100 ) 1334
shares sold to optionees less shares exchanged 2013 4 4
shares issued under employee stock purchase plan 2013 4 4
stock repurchase program 2013 -14 ( 14 ) -14 ( 14 )
balance december 31 2012 1434 -106 ( 106 ) 1328