<ARTICLE> 5
<MULTIPLIER> 1,000,000
       
                             
<PERIOD-TYPE>                   3-MOS
<FISCAL-YEAR-END>                          DEC-31-1996
<PERIOD-END>                               MAR-31-1996
<CASH>                                              31
<SECURITIES>                                       791
<RECEIVABLES>                                    1,232
<ALLOWANCES>                                        10
<INVENTORY>                                        532
<CURRENT-ASSETS>                                 3,045
<PP&E>                                          18,541
<DEPRECIATION>                                   6,417
<TOTAL-ASSETS>                                  17,567
<CURRENT-LIABILITIES>                            5,194
<BONDS>                                              0
<COMMON>                                             0
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<OTHER-SE>                                       3,794
<TOTAL-LIABILITY-AND-EQUITY>                    17,567
<SALES>                                              0
<TOTAL-REVENUES>                                 3,902
<CGS>                                                0
<TOTAL-COSTS>                                    3,544
<OTHER-EXPENSES>                                     0
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                 111
<INCOME-PRETAX>                                    251
<INCOME-TAX>                                       101
<INCOME-CONTINUING>                                150
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                       150
<EPS-PRIMARY>                                        0
<EPS-DILUTED>                                        0