1 EXHIBIT 11 COMPUTATION OF NET INCOME PER SHARE (Thousands of Dollars Except Per Share Data) 1994 1993 1992 - ----------------------------------------------------------------------------------------------- FULLY DILUTED Average shares outstanding 86,295,514 88,716,976 88,106,534 Options -- treasury stock method 579,924 744,892 812,608 Assumed conversion of 6.25% Convertible Subordinated Debentures 70,870 84,899 92,406 - ----------------------------------------------------------------------------------------------- Average fully diluted shares 86,946,308 89,546,767 89,011,548 Income before cumulative effects of changes in accounting methods $ 186,571 $ 165,227 $ 144,636 Add 6.25% Convertible Subordinated Debentures interest -- net of tax 8 10 12 - ----------------------------------------------------------------------------------------------- Income before cumulative effects of changes in accounting methods applicable to fully diluted shares 186,579 165,237 144,648 Cumulative effects of changes in accounting methods (81,771) - ----------------------------------------------------------------------------------------------- Net income applicable to fully diluted shares $ 186,579 $ 165,237 $ 62,877 Income per share: Income before cumulative effects of changes in accounting methods $ 2.15 $ 1.85 $ 1.63 Cumulative effects of changes in accounting methods (.92) - ----------------------------------------------------------------------------------------------- Net income $ 2.15 $ 1.85 $ .71 =============================================================================================== PRIMARY Average shares outstanding 86,295,514 88,716,976 88,106,534 Options -- treasury stock method 566,222 718,920 798,421 - ----------------------------------------------------------------------------------------------- Average shares and equivalents 86,861,736 89,435,896 88,904,955 Income before cumulative effects of changes in accounting methods $ 186,571 $ 165,227 $ 144,636 Cumulative effects of changes in accounting methods (81,771) - ----------------------------------------------------------------------------------------------- Net income applicable to shares and equivalents $ 186,571 $ 165,227 $ 62,865 Income per share: Income before cumulative effects of changes in accounting methods $ 2.15 $ 1.85 $ 1.63 Cumulative effects of changes in accounting methods (.92) - ----------------------------------------------------------------------------------------------- Net income $ 2.15 $ 1.85 $ .71 =============================================================================================== 41