<ARTICLE> 5 <LEGEND> THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE COMPANY'S BALANCE SHEET AT JUNE 30, 2000 AND INCOME STATEMENT FOR THE SIX MONTHS ENDED JUNE 30, 2000 AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS AND THEIR RELATED FOOTNOTES. </LEGEND> <MULTIPLIER> 1,000,000 <PERIOD-TYPE> 6-MOS <FISCAL-YEAR-END> DEC-31-2000 <PERIOD-END> JUN-30-2000 <CASH> 1,102 <SECURITIES> 622 <RECEIVABLES> 4,198 <ALLOWANCES> 37 <INVENTORY> 1,512 <CURRENT-ASSETS> 8,566 <PP&E> 54,701 <DEPRECIATION> 29,608 <TOTAL-ASSETS> 41,378 <CURRENT-LIABILITIES> 8,396 <BONDS> 5,366 <PREFERRED-MANDATORY> 0 <PREFERRED> 0 <COMMON> 534 <OTHER-SE> 18,216 <TOTAL-LIABILITY-AND-EQUITY> 41,378 <SALES> 24,305 <TOTAL-REVENUES> 24,889 <CGS> 0 <TOTAL-COSTS> 20,906 <OTHER-EXPENSES> 0 <LOSS-PROVISION> 0 <INTEREST-EXPENSE> 255 <INCOME-PRETAX> 3,983 <INCOME-TAX> 1,823 <INCOME-CONTINUING> 2,160 <DISCONTINUED> 0 <EXTRAORDINARY> 0 <CHANGES> 0 <NET-INCOME> 2,160 <EPS-BASIC> 3.30 <EPS-DILUTED> 3.30