<ARTICLE> 5
<LEGEND>
THIS  SCHEDULE  CONTAINS  SUMMARY  FINANCIAL  INFORMATION  EXTRACTED  FROM
THE CONDENSED CONSOLIDATED FINANCIAL STATEMENTS CONTAINED IN THE COMPANY'S
QUARTERLY REPORT ON FORM 10-Q FOR THE QUARTER ENDED  MARCH 31, 1998 AND IS
QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000,000
       
                             
<PERIOD-TYPE>                   3-MOS
<FISCAL-YEAR-END>                          DEC-31-1998
<PERIOD-START>                             JAN-01-1998
<PERIOD-END>                               MAR-31-1998
<CASH>                                             105
<SECURITIES>                                       776
<RECEIVABLES>                                      304
<ALLOWANCES>                                        15
<INVENTORY>                                        118
<CURRENT-ASSETS>                                 1,412
<PP&E>                                           1,794
<DEPRECIATION>                                     516
<TOTAL-ASSETS>                                   3,082
<CURRENT-LIABILITIES>                              825
<BONDS>                                            223
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                             0
<OTHER-SE>                                       2,030
<TOTAL-LIABILITY-AND-EQUITY>                     3,082
<SALES>                                            567
<TOTAL-REVENUES>                                   605
<CGS>                                               79
<TOTAL-COSTS>                                       79
<OTHER-EXPENSES>                                   272
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                   2
<INCOME-PRETAX>                                    268
<INCOME-TAX>                                        80
<INCOME-CONTINUING>                                  0
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                       187
<EPS-PRIMARY>                                      .73
<EPS-DILUTED>                                      .71