<ARTICLE>                     5
<MULTIPLIER>                                   1,000
       
                             
<PERIOD-TYPE>                   9-MOS
<FISCAL-YEAR-END>                              Dec-31-1996
<PERIOD-END>                                   Sep-30-1996
<CASH>                                         1,582,000
<SECURITIES>                                   0
<RECEIVABLES>                                  2,505,300
<ALLOWANCES>                                   123,200
<INVENTORY>                                    278,100
<CURRENT-ASSETS>                               4,658,900
<PP&E>                                         20,996,100
<DEPRECIATION>                                 11,028,000
<TOTAL-ASSETS>                                 16,743,200
<CURRENT-LIABILITIES>                          3,194,300
<BONDS>                                        3,047,400
<PREFERRED-MANDATORY>                          13,200
<PREFERRED>                                    0
<COMMON>                                       1,091,300
<OTHER-SE>                                     7,295,900
<TOTAL-LIABILITY-AND-EQUITY>                   16,743,200
<SALES>                                        0
<TOTAL-REVENUES>                               10,309,100
<CGS>                                          0
<TOTAL-COSTS>                                  6,309,900
<OTHER-EXPENSES>                               0
<LOSS-PROVISION>                               0
<INTEREST-EXPENSE>                             145,200
<INCOME-PRETAX>                                1,524,500
<INCOME-TAX>                                   579,600
<INCOME-CONTINUING>                            944,900
<DISCONTINUED>                                 (2,600)
<EXTRAORDINARY>                                (3,800)
<CHANGES>                                      0
<NET-INCOME>                                   938,500
<EPS-PRIMARY>                                  2.24
<EPS-DILUTED>                                  2.21