<TABLE> <S> <C>
<PAGE>
<ARTICLE> 5
<MULTIPLIER> 1,000,000
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> DEC-31-2000
<PERIOD-START> JAN-01-2000
<PERIOD-END> JUN-30-2000
<CASH> 115
<SECURITIES> 0
<RECEIVABLES> 2,357
<ALLOWANCES> 0
<INVENTORY> 124
<CURRENT-ASSETS> 3,481
<PP&E> 4,212
<DEPRECIATION> 1,567
<TOTAL-ASSETS> 8,763
<CURRENT-LIABILITIES> 3,713
<BONDS> 1,832
450
0
<COMMON> 94
<OTHER-SE> 1,424
<TOTAL-LIABILITY-AND-EQUITY> 8,763
<SALES> 0
<TOTAL-REVENUES> 10,521
<CGS> 0
<TOTAL-COSTS> 9,880
<OTHER-EXPENSES> 457
<LOSS-PROVISION> 0
<INTEREST-EXPENSE> 109
<INCOME-PRETAX> 127
<INCOME-TAX> 43
<INCOME-CONTINUING> 84
<DISCONTINUED> 0
<EXTRAORDINARY> 0
<CHANGES> 0
<NET-INCOME> 84
<EPS-BASIC> .90
<EPS-DILUTED> .90
</TABLE>