<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
COMPANY'S CONSOLIDATED STATEMENTS OF INCOME AND CONSOLIDATED BALANCE SHEETS AND
IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000,000
       
                             
<PERIOD-TYPE>                   12-MOS
<FISCAL-YEAR-END>                          DEC-31-1997
<PERIOD-START>                             JAN-01-1997
<PERIOD-END>                               DEC-31-1997
<CASH>                                             330
<SECURITIES>                                        43
<RECEIVABLES>                                      438
<ALLOWANCES>                                        35
<INVENTORY>                                         77
<CURRENT-ASSETS>                                 1,011
<PP&E>                                           6,155
<DEPRECIATION>                                   1,161
<TOTAL-ASSETS>                                   7,826
<CURRENT-LIABILITIES>                              941
<BONDS>                                          2,709
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                         15
<COMMON>                                           628
<OTHER-SE>                                       2,740
<TOTAL-LIABILITY-AND-EQUITY>                     7,826
<SALES>                                          5,316
<TOTAL-REVENUES>                                 5,316
<CGS>                                                0
<TOTAL-COSTS>                                    4,607
<OTHER-EXPENSES>                                    80
<LOSS-PROVISION>                                    33
<INTEREST-EXPENSE>                                 148
<INCOME-PRETAX>                                    448
<INCOME-TAX>                                       187
<INCOME-CONTINUING>                                250
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                       250
<EPS-PRIMARY>                                      .95
<EPS-DILUTED>                                      .94