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

                             
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-1999
<PERIOD-START>                             JAN-01-1999
<PERIOD-END>                               JUN-30-1999
<CASH>                                             200
<SECURITIES>                                     1,169
<RECEIVABLES>                                      384
<ALLOWANCES>                                        21
<INVENTORY>                                        122
<CURRENT-ASSETS>                                 2,011
<PP&E>                                           2,168
<DEPRECIATION>                                     684
<TOTAL-ASSETS>                                   3,890
<CURRENT-LIABILITIES>                              881
<BONDS>                                            223
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                             0
<OTHER-SE>                                       2,785
<TOTAL-LIABILITY-AND-EQUITY>                     3,890
<SALES>                                          1,426
<TOTAL-REVENUES>                                 1,566
<CGS>                                              191
<TOTAL-COSTS>                                      191
<OTHER-EXPENSES>                                   382<F1>
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                   6
<INCOME-PRETAX>                                    728
<INCOME-TAX>                                       213
<INCOME-CONTINUING>                                515
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                       515
<EPS-BASIC>                                     1.01<F2>
<EPS-DILUTED>                                     0.96
<FN>
<F1>Item consists of research and development expenses.
<F2>"EPS-Primary" denotes basic EPS.
</FN>