<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 SEPTEMBER 30, 1999 AND IS QUALIFIED IN
ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000,000

                             
<PERIOD-TYPE>                   9-MOS
<FISCAL-YEAR-END>                          DEC-31-1999
<PERIOD-START>                             JAN-01-1999
<PERIOD-END>                               SEP-30-1999
<CASH>                                             188
<SECURITIES>                                     1,336
<RECEIVABLES>                                      326
<ALLOWANCES>                                        26
<INVENTORY>                                        147
<CURRENT-ASSETS>                                 2,126
<PP&E>                                           2,230
<DEPRECIATION>                                     721
<TOTAL-ASSETS>                                   4,037
<CURRENT-LIABILITIES>                              818
<BONDS>                                            223
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                             0
<OTHER-SE>                                       2,995
<TOTAL-LIABILITY-AND-EQUITY>                     4,037
<SALES>                                          2,195
<TOTAL-REVENUES>                                 2,413
<CGS>                                              290
<TOTAL-COSTS>                                      290
<OTHER-EXPENSES>                                   580<F1>
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                  10
<INCOME-PRETAX>                                  1,181
<INCOME-TAX>                                       366
<INCOME-CONTINUING>                                815
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                       815
<EPS-BASIC>                                       0.80<F2>
<EPS-DILUTED>                                     0.76<F2>
<FN>
<F1>ITEM CONSISTS OF RESEARCH AND DEVELOPMENT EXPENSES.
<F2>REFLECTS A TWO-FOR-ONE SPLIT OF THE COMMON STOCK TO BE EFFECTED IN THE FORM OF
A 100 PERCENT STOCK DIVIDEND TO BE DISTRIBUTED ON NOVEMBER 19, 1999 TO
STOCKHOLDERS OF RECORD ON NOVEMBER 5, 1999.  FINANCIAL DATA SCHEDULES FROM PRIOR
PERIODS HAVE NOT BEEN RESTATED TO REFLECT THIS STOCK SPLIT.
</FN>