<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
CONSOLIDATED STATEMENT OF OPERATIONS FOR THE YEAR ENDED DECEMBER 31, 1996 AND
THE CONSOLIDATED BALANCE SHEET AS OF DECEMBER 31, 1996 AND IS QUALIFIED IN ITS 
ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
<MULTIPLIER> 1,000,000
       
                             
<PERIOD-TYPE>                   YEAR
<FISCAL-YEAR-END>                          DEC-31-1996
<PERIOD-START>                             JAN-01-1996
<PERIOD-END>                               DEC-31-1996
<CASH>                                             424
<SECURITIES>                                         0
<RECEIVABLES>                                    3,095
<ALLOWANCES>                                       248
<INVENTORY>                                        149
<CURRENT-ASSETS>                                 3,948
<PP&E>                                          34,758
<DEPRECIATION>                                  18,843
<TOTAL-ASSETS>                                  24,856
<CURRENT-LIABILITIES>                            5,703
<BONDS>                                          5,960
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                           438
<OTHER-SE>                                       6,985
<TOTAL-LIABILITY-AND-EQUITY>                    24,856
<SALES>                                              0
<TOTAL-REVENUES>                                13,081
<CGS>                                                0
<TOTAL-COSTS>                                   10,145
<OTHER-EXPENSES>                                     0
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                 478
<INCOME-PRETAX>                                  2,751
<INCOME-TAX>                                     1,011
<INCOME-CONTINUING>                              1,740
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                          142
<NET-INCOME>                                     1,882
<EPS-PRIMARY>                                     4.28
<EPS-DILUTED>                                        0