<ARTICLE>                                  5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
CONDENSED CONSOLIDATED FINANCIAL STATEMENTS FOR THE PERIOD ENDED JUNE 30 AND IS
QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.



<MULTIPLIER>                                1,000,000

                                                       
<PERIOD-TYPE>                                             6-MOS
<FISCAL-YEAR-END>                                         DEC-31-1999
<PERIOD-END>                                              JUN-30-2000
<CASH>                                                                                                     97
<SECURITIES>                                                                                                0
<RECEIVABLES>                                                                                             916
<ALLOWANCES>                                                                                               24
<INVENTORY>                                                                                               510
<CURRENT-ASSETS>                                                                                        1,979
<PP&E>                                                                                                 20,361
<DEPRECIATION>                                                                                          6,814
<TOTAL-ASSETS>                                                                                         19,556
<CURRENT-LIABILITIES>                                                                                   2,277
<BONDS>                                                                                                 6,687
<PREFERRED-MANDATORY>                                                                                       0
<PREFERRED>                                                                                                 0
<COMMON>                                                                                                   74
<OTHER-SE>                                                                                              4,128
<TOTAL-LIABILITY-AND-EQUITY>                                                                           19,556
<SALES>                                                                                                 5,636
<TOTAL-REVENUES>                                                                                        6,316
<CGS>                                                                                                   3,897
<TOTAL-COSTS>                                                                                           3,897
<OTHER-EXPENSES>                                                                                           21
<LOSS-PROVISION>                                                                                            0
<INTEREST-EXPENSE>                                                                                        247
<INCOME-PRETAX>                                                                                         1,535
<INCOME-TAX>                                                                                              785
<INCOME-CONTINUING>                                                                                       835
<DISCONTINUED>                                                                                              0
<EXTRAORDINARY>                                                                                             0
<CHANGES>                                                                                                   0
<NET-INCOME>                                                                                              835
<EPS-BASIC>                                                                                              2.27
<EPS-DILUTED>                                                                                            2.27