EXHIBIT 12

             COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES AND
        EARNINGS TO COMBINED FIXED CHARGES AND PREFERRED STOCK DIVIDENDS
                         FOR SIX MONTHS ENDED JUNE 30:
                                  (UNAUDITED)

(Dollars in millions)

                                                      1998          1997
                                                   --------      --------

Earnings before income taxes(1)                    $  3,598      $  4,036

Add:
  Fixed charges, excluding capitalized interest       1,027           945
                                                   --------      --------
Earnings as adjusted                               $  4,625      $  4,981
                                                   ========      ========
Fixed charges:
  Interest expense                                      789           757
  Capitalized interest                                   11            16
  Portion of rental expense representative of
    interest                                            238           188
                                                   --------      --------
Total fixed charges                                $  1,038      $    961
                                                   ========      ========
Preferred stock dividends(2)                             14            15
                                                   --------      --------
Combined fixed charges and preferred stock
  dividends                                        $  1,052      $    976
                                                   ========      ========
Ratio of earnings to fixed charges                     4.46          5.18
Ratio of earnings to combined fixed charges and
  preferred stock dividends                            4.40          5.10

(1)   Earnings before income taxes excludes the company's share in the income
      and losses of less-than-fifty percent-owned affiliates.

(2)   Included in the ratio computation are preferred stock dividends of $10
      million for the first six months of 1998 and 1997, or $14 million and $15
      million, respectively, representing the pre-tax earnings which would be
      required to cover such dividend requirements based on the company's
      effective tax rate for the six months ended June 30, 1998 and 1997.


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