<ARTICLE>         5
<LEGEND>
This schedule contains summary financial information extracted from the
Consolidated Statement of Income and the Consolidated Balance Sheet and
is qualified in its entirety by reference to such financial statements.
</LEGEND>
<MULTIPLIER>      1,000,000
       
                             
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-1998
<PERIOD-END>                               JUN-30-1998
<CASH>                                         $   513
<SECURITIES>                                       215
<RECEIVABLES>                                      840
<ALLOWANCES>                                         0
<INVENTORY>                                        451
<CURRENT-ASSETS>                                 2,314
<PP&E>                                          32,802
<DEPRECIATION>                                  18,494
<TOTAL-ASSETS>                                  24,434
<CURRENT-LIABILITIES>                            6,367
<BONDS>                                          3,679
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          1
<COMMON>                                           814
<OTHER-SE>                                       7,248
<TOTAL-LIABILITY-AND-EQUITY>                    24,434
<SALES>                                          5,100
<TOTAL-REVENUES>                                 5,300
<CGS>                                            4,215
<TOTAL-COSTS>                                    4,490
<OTHER-EXPENSES>                                     0
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                 203
<INCOME-PRETAX>                                    222
<INCOME-TAX>                                        10
<INCOME-CONTINUING>                                198
<DISCONTINUED>                                     176
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                       374
<EPS-PRIMARY>                                    $1.16
<EPS-DILUTED>                                    $1.14