<TABLE> <S> <C>
<PAGE>
<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
ACCOMPANYING FINANCIAL STATEMENTS AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE
TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000,000
<S> <C>
<PERIOD-TYPE> 9-MOS
<FISCAL-YEAR-END> DEC-31-2000
<PERIOD-START> JAN-01-2000
<PERIOD-END> SEP-30-2000
<CASH> 11
<SECURITIES> 0
<RECEIVABLES> 883
<ALLOWANCES> 27
<INVENTORY> 27
<CURRENT-ASSETS> 903
<PP&E> 4357
<DEPRECIATION> 2717
<TOTAL-ASSETS> 2897
<CURRENT-LIABILITIES> 830
<BONDS> 648
0
0
<COMMON> 650
<OTHER-SE> 248
<TOTAL-LIABILITY-AND-EQUITY> 2897
<SALES> 1292
<TOTAL-REVENUES> 1292
<CGS> 0
<TOTAL-COSTS> (268)
<OTHER-EXPENSES> 0
<LOSS-PROVISION> 0
<INTEREST-EXPENSE> 51
<INCOME-PRETAX> 1512
<INCOME-TAX> 542
<INCOME-CONTINUING> 971
<DISCONTINUED> 0
<EXTRAORDINARY> 5
<CHANGES> 0
<NET-INCOME> 966
<EPS-BASIC> 0
<EPS-DILUTED> 0
</TABLE>