<ARTICLE>          5

<LEGEND>
This schedule contains summary financial information extracted from the
Consolidated Statement of Income and the Consolidated Balance Sheet and
is qualified in its entirety by reference to such financial statements.
</LEGEND>

<MULTIPLIER>       1,000,000
       
                             
<PERIOD-TYPE>                   3-MOS
<FISCAL-YEAR-END>                          DEC-31-1996
<PERIOD-END>                               MAR-31-1996
<CASH>                                         $ 1,624
<SECURITIES>                                     1,779
<RECEIVABLES>                                    1,670
<ALLOWANCES>                                         0
<INVENTORY>                                        935
<CURRENT-ASSETS>                                 6,302
<PP&E>                                          32,995
<DEPRECIATION>                                  17,533
<TOTAL-ASSETS>                                  24,508
<CURRENT-LIABILITIES>                            4,331
<BONDS>                                          6,668
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          1
<COMMON>                                           402
<OTHER-SE>                                       6,484
<TOTAL-LIABILITY-AND-EQUITY>                    24,508
<SALES>                                          4,534
<TOTAL-REVENUES>                                 4,760
<CGS>                                            3,426
<TOTAL-COSTS>                                    3,526
<OTHER-EXPENSES>                                    26
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                 173
<INCOME-PRETAX>                                    620
<INCOME-TAX>                                       220
<INCOME-CONTINUING>                                370
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                       370
<EPS-PRIMARY>                                   $ 2.26
<EPS-DILUTED>                                   $ 2.26