<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>                   3-MOS
<FISCAL-YEAR-END>                          DEC-31-1997
<PERIOD-START>                             JAN-01-1997
<PERIOD-END>                               MAR-31-1997
<CASH>                                             376
<SECURITIES>                                        26
<RECEIVABLES>                                      419
<ALLOWANCES>                                        39
<INVENTORY>                                         81
<CURRENT-ASSETS>                                 1,058
<PP&E>                                           5,918
<DEPRECIATION>                                   1,072
<TOTAL-ASSETS>                                   7,685
<CURRENT-LIABILITIES>                              922
<BONDS>                                          2,732
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                         15
<COMMON>                                           627
<OTHER-SE>                                       2,635
<TOTAL-LIABILITY-AND-EQUITY>                     7,685
<SALES>                                          1,303
<TOTAL-REVENUES>                                 1,303
<CGS>                                                0
<TOTAL-COSTS>                                    1,126
<OTHER-EXPENSES>                                    13
<LOSS-PROVISION>                                     7
<INTEREST-EXPENSE>                                  34
<INCOME-PRETAX>                                    123
<INCOME-TAX>                                        51
<INCOME-CONTINUING>                                 68
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                        68
<EPS-PRIMARY>                                      .26
<EPS-DILUTED>                                      .26