<ARTICLE>                     5
<LEGEND>
          The following Financial Data Schedules have been restated to reflect
          the adoption of SFAS 128.     
</LEGEND>
 
<MULTIPLIER>                                   1,000,000

       
                                                                                                  
<PERIOD-TYPE>                   3-MOS                       6-MOS                    9-MOS                    3-MOS
<FISCAL-YEAR-END>                              DEC-31-1997            DEC-31-1997              DEC-31-1997              DEC-31-1996
<PERIOD-START>                                 JAN-01-1997            JAN-01-1997              JAN-01-1997              JAN-01-1996
<PERIOD-END>                                   MAR-31-1997            JUN-30-1997              SEP-30-1997              MAR-31-1996

<CASH>                                         50                     33                       72                       31
<SECURITIES>                                   0                      0                        0                        0
<RECEIVABLES>                                  999                    1002                     1191                     1017
<ALLOWANCES>                                   124                    128                      132                      111
<INVENTORY>                                    0                      0                        0                        0
<CURRENT-ASSETS>                               0                      0                        0                        0
<PP&E>                                         4685                   4809                     4719                     4011
<DEPRECIATION>                                 1807                   1845                     1873                     1557
<TOTAL-ASSETS>                                 4710                   4830                     4936                     4166
<CURRENT-LIABILITIES>                          0                      0                        0                        0
<BONDS>                                        2521                   2475                     2467                     2162
<PREFERRED-MANDATORY>                          3                      0                        0                        3
<PREFERRED>                                    0                      0                        0                        0
<COMMON>                                       15                     17                       17                       14
<OTHER-SE>                                     770                    790                      811                      720
<TOTAL-LIABILITY-AND-EQUITY>                   4710                   4830                     4936                     4166
<SALES>                                        0                      0                        0                        0
<TOTAL-REVENUES>                               395                    829                      1260                     304
<CGS>                                          0                      0                        0                        0
<TOTAL-COSTS>                                  183                    402                      614                      150
<OTHER-EXPENSES>                               60                     122                      185                      44
<LOSS-PROVISION>                               2                      6                        10                       0
<INTEREST-EXPENSE>                             52                     107                      163                      44
<INCOME-PRETAX>                                45                     83                       115                      30
<INCOME-TAX>                                   19                     35                       48                       12
<INCOME-CONTINUING>                            31                     61                       89                       18
<DISCONTINUED>                                 0                      0                        0                        0
<EXTRAORDINARY>                                0                      0                        0                        0
<CHANGES>                                      0                      0                        0                        0
<NET-INCOME>                                   31                     61                       89                       18
<EPS-PRIMARY>                                  1.37                   2.62                     3.77                     1.06
<EPS-DILUTED>                                  1.27                   2.49                     3.61                     1.01