EXHIBIT 11 COMPUTATION OF FULLY DILUTED EARNINGS PER SHARE UNDER TREASURY STOCK METHOD SET FORTH IN ACCOUNTING PRINCIPLES BOARD OPINION NO. 15 For Three Months Ended ------------------------------- March 31, 1994 March 31, 1993* -------------- -------------- Number of share on which earnings (loss) per share is based: Average outstanding during period 582,067,170 570,559,191 Add - Incremental shares under stock option and stock purchase plans 2,184,080 -- - Incremental shares related to 5 3/4% CGI convertible bonds (average) 7,715,400 -- -------------- -------------- Number of shares on which fully diluted earnings (loss) per share is based 591,966,650 570,559,191 ============== ============== Net earnings (loss) available to common shareholders (millions) $ 371 $(399) - Net earnings (loss) effect of interest on 5 3/4% CGI convertible bonds (millions) 4 -- -------------- -------------- Net earnings (loss) on which fully diluted earnings per share is based (millions) $ 375 $(399) ============== ============== Fully diluted earnings (loss) per share $ .63 $(.70) Published earnings (loss) per share $ .64 $(.70) * In 1993, incremental shares under stock plans and the effect of the convertible bonds were not considered for this calculation due to their antidilutive effect. Printed on Recycled Paper - 13 -