<TABLE> <S> <C>


<ARTICLE> 5
<LEGEND>
This schedule contains summary financial information extracted from the
Consolidated Balance Sheet at December 31, 1999, 1998, and 1997, and the
Consolidated Statement of Income for the years ended and is qualified in its
entirety by reference to such Form 10-K.
</LEGEND>
<MULTIPLIER> 1,000,000

<S>                                        <C>                     <C>                     <C>
<PERIOD-TYPE>                                     YEAR                    YEAR                    YEAR
<FISCAL-YEAR-END>                          DEC-31-1999             DEC-31-1998             DEC-31-1997
<PERIOD-END>                               DEC-31-1999             DEC-31-1998             DEC-31-1997
<CASH>                                             267                     121                     192
<SECURITIES>                                         0                       0                       0
<RECEIVABLES>                                      509                     394                     506
<ALLOWANCES>                                         8                       5                       5
<INVENTORY>                                        281                     247                     175
<CURRENT-ASSETS>                                  1161                     877                     926
<PP&E>                                           11049                   10651                   10228
<DEPRECIATION>                                    6964                    6498                    6309
<TOTAL-ASSETS>                                    5899                    5451                    5339
<CURRENT-LIABILITIES>                              840                    1050                     926
<BONDS>                                              0                       0                       0
<PREFERRED-MANDATORY>                                0                       0                       0
<PREFERRED>                                          0                       0                       0
<COMMON>                                            93                      93                      93
<OTHER-SE>                                        1399                    1253                    1465
<TOTAL-LIABILITY-AND-EQUITY>                      5899                    5451                    5339
<SALES>                                           2696                    2200                    2605
<TOTAL-REVENUES>                                  2696                    2200                    2605
<CGS>                                             1056                    1053                    1003
<TOTAL-COSTS>                                     2479                    2763                    2152
<OTHER-EXPENSES>                                     0                       0                       0
<LOSS-PROVISION>                                     0                       0                       0
<INTEREST-EXPENSE>                                 190                     157                     141
<INCOME-PRETAX>                                    257                   (520)                     535
<INCOME-TAX>                                       111                   (175)                     184
<INCOME-CONTINUING>                                146                   (345)                     351
<DISCONTINUED>                                       0                     277                      33
<EXTRAORDINARY>                                      0                       0                       0
<CHANGES>                                          (4)                       0                       0
<NET-INCOME>                                       142                    (68)                     382
<EPS-BASIC>                                     1.64                   (.78)                    4.40
<EPS-DILUTED>                                     1.64                   (.78)                    4.40


</TABLE>