<ARTICLE> 5 <MULTIPLIER> 1,000 <PERIOD-TYPE> 9-MOS <FISCAL-YEAR-END> DEC-31-1998 <PERIOD-START> JAN-01-1998 <PERIOD-END> SEP-30-1998 <CASH> 34,100 <SECURITIES> 0 <RECEIVABLES> 180,600 <ALLOWANCES> 18,100 <INVENTORY> 12,600 <CURRENT-ASSETS> 224,000 <PP&E> 1,344,200 <DEPRECIATION> 456,400 <TOTAL-ASSETS> 1,713,700 <CURRENT-LIABILITIES> 243,800 <BONDS> 102,200 <PREFERRED-MANDATORY> 0 <PREFERRED> 0 <COMMON> 1,800 <OTHER-SE> 1,249,700 <TOTAL-LIABILITY-AND-EQUITY> 1,713,700 <SALES> 0 <TOTAL-REVENUES> 991,700 <CGS> 0 <TOTAL-COSTS> 688,200 <OTHER-EXPENSES> 0 <LOSS-PROVISION> 0 <INTEREST-EXPENSE> 40,400 <INCOME-PRETAX> 165,800 <INCOME-TAX> 59,700 <INCOME-CONTINUING> 106,100 <DISCONTINUED> 0 <EXTRAORDINARY> 0 <CHANGES> 0 <NET-INCOME> 106,100 <EPS-PRIMARY> .87 <EPS-DILUTED> .87