<ARTICLE>                     5
<MULTIPLIER>                                   1,000
       
                             
<PERIOD-TYPE>                   YEAR
<FISCAL-YEAR-END>                              Dec-31-1996
<PERIOD-END>                                   Dec-31-1996
<CASH>                                         1,150,600
<SECURITIES>                                   0
<RECEIVABLES>                                  2,461,000
<ALLOWANCES>                                   117,400
<INVENTORY>                                    305,300
<CURRENT-ASSETS>                               4,232,900
<PP&E>                                         21,410,800
<DEPRECIATION>                                 10,946,700
<TOTAL-ASSETS>                                 16,826,400
<CURRENT-LIABILITIES>                          3,194,300
<BONDS>                                        2,974,800
<PREFERRED-MANDATORY>                          11,800
<PREFERRED>                                    0
<COMMON>                                       1,091,300
<OTHER-SE>                                     7,428,600
<TOTAL-LIABILITY-AND-EQUITY>                   16,826,400
<SALES>                                        0
<TOTAL-REVENUES>                               13,887,500
<CGS>                                          0
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<INCOME-PRETAX>                                1,911,900
<INCOME-TAX>                                   721,000
<INCOME-CONTINUING>                            1,190,900
<DISCONTINUED>                                 (2,600)
<EXTRAORDINARY>                                (4,500)
<CHANGES>                                      0
<NET-INCOME>                                   1,183,800
<EPS-PRIMARY>                                  2.80
<EPS-DILUTED>                                  2.77