<ARTICLE>                                   5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
CONDENSED CONSOLIDATED FINANCIAL STATEMENTS FOR THE PERIOD ENDED SEPTEMBER 30,
1998, AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL
STATEMENTS.
</LEGEND>
<MULTIPLIER>                                1,000,000
       
                                                                                
<PERIOD-TYPE>                                     9-MOS
<FISCAL-YEAR-END>                                 DEC-31-1998
<PERIOD-END>                                      SEP-30-1998
<CASH>                                                                                   118
<SECURITIES>                                                                               0
<RECEIVABLES>                                                                            420
<ALLOWANCES>                                                                              23
<INVENTORY>                                                                              481
<CURRENT-ASSETS>                                                                       2,826
<PP&E>                                                                                16,571
<DEPRECIATION>                                                                         6,672
<TOTAL-ASSETS>                                                                        15,344
<CURRENT-LIABILITIES>                                                                  2,869
<BONDS>                                                                                5,859
<PREFERRED-MANDATORY>                                                                      0
<PREFERRED>                                                                              269
<COMMON>                                                                                  69
<OTHER-SE>                                                                             3,148
<TOTAL-LIABILITY-AND-EQUITY>                                                          15,344
<SALES>                                                                                4,904
<TOTAL-REVENUES>                                                                       5,647
<CGS>                                                                                  3,838
<TOTAL-COSTS>                                                                          3,838
<OTHER-EXPENSES>                                                                          79
<LOSS-PROVISION>                                                                           0
<INTEREST-EXPENSE>                                                                       412
<INCOME-PRETAX>                                                                          736
<INCOME-TAX>                                                                             383
<INCOME-CONTINUING>                                                                      363
<DISCONTINUED>                                                                            38
<EXTRAORDINARY>                                                                            0
<CHANGES>                                                                                  0
<NET-INCOME>                                                                             401
<EPS-PRIMARY>                                                                           1.11
<EPS-DILUTED>                                                                           1.09