EXHIBIT 12

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

(Dollars in millions)

                                                          1997          1996
                                                         ------       ------

Earnings before income taxes(1)                          $6,035       $5,706

Add:
  Fixed charges, excluding capitalized interest           1,449        1,450
                                                         ------       ------
Earnings as adjusted                                     $7,484       $7,156
                                                         ======       ======
Fixed charges:
  Interest expense                                        1,157        1,153
  Capitalized interest                                       26           24
  Portion of rental expense representative of
    interest                                                292          297
                                                         ------       ------
Total fixed charges                                      $1,475       $1,474
                                                         ======       ======
Preferred stock dividends(2)                                 22           25
                                                         ------       ------
Combined fixed charges and preferred stock
  dividends                                              $1,497       $1,499
                                                         ======       ======
Ratio of earnings to fixed charges                         5.07         4.85
Ratio of earnings to combined fixed charges and
  preferred stock dividends                                5.00         4.78

(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 $15
      million for the first nine months of 1997 and 1996, or $22 million and $25
      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 nine months ended September 30, 1997 and 1996.