<TABLE> <S> <C>

<ARTICLE> 5
<LEGEND>
THIS SCHEDULE, WHICH HAS BEEN RESTATED FOR SFAS 128, CONTAINS SUMMARY FINANCIAL
INFORMATION EXTRACTED FROM THE FINANCIAL STATEMENTS INCLUDED IN PART II, ITEM 8
OF FORM 10-K DATED DECEMBER 31, 1996 AND PART I, ITEM 1 OF 1996 QUARTERLY
REPORTS ON FORM 10-Q, AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH
FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000,000

<S>                             <C>                     <C>                     <C>
<PERIOD-TYPE>                   6-MOS                   9-MOS                   12-MOS
<FISCAL-YEAR-END>                          DEC-31-1996             DEC-31-1996             DEC-31-1996
<PERIOD-END>                               JUN-30-1996             SEP-30-1996             DEC-31-1996
<CASH>                                             499                     340                     188
<SECURITIES>                                        42                     107                     199
<RECEIVABLES>                                      130                     121                     118
<ALLOWANCES>                                         0                       1                       1
<INVENTORY>                                         36                      36                      39
<CURRENT-ASSETS>                                   733                     628                     562
<PP&E>                                             380                     392                     408
<DEPRECIATION>                                      91                      95                     100
<TOTAL-ASSETS>                                   1,533                   1,566                   1,614
<CURRENT-LIABILITIES>                               60                      65                      67
<BONDS>                                            873                     877                     882
<PREFERRED-MANDATORY>                                0                       0                       0
<PREFERRED>                                          0                       0                       0
<COMMON>                                             1                       1                       1
<OTHER-SE>                                         542                     565                     596
<TOTAL-LIABILITY-AND-EQUITY>                     1,533                   1,566                   1,614
<SALES>                                             54                      84                     109
<TOTAL-REVENUES>                                   204                     302                     411
<CGS>                                               46                      67                      85
<TOTAL-COSTS>                                      115                     168                     227
<OTHER-EXPENSES>                                     0                       0                       0
<LOSS-PROVISION>                                     0                       0                       0
<INTEREST-EXPENSE>                                  17                      30                      43
<INCOME-PRETAX>                                     70                     108                     149
<INCOME-TAX>                                        27                      41                      57
<INCOME-CONTINUING>                                 44                      67                      92
<DISCONTINUED>                                       0                       0                       0
<EXTRAORDINARY>                                      0                       0                       0
<CHANGES>                                            0                       0                       0
<NET-INCOME>                                        44                      67                      92
<EPS-PRIMARY>                                      .52                     .79                    1.10
<EPS-DILUTED>                                      .51                     .78                    1.08


</TABLE>