| **(Schedule Of Stock-Based Compensation Expense By Statement Of Operations Line Item) (Details) - USD ($) $ in Millions** | 12 Months Ended |
|---------------------------------------------------------------------------------------------------------------------------|-----------------|
||
| **Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]**                         |            |   |   |
| Stock-based compensation expense                                                                                          | $ 242           | $ 196 | $ 178 |
| Cost of revenue [Member]                                                                                                  |            |   |   |
| **Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]**                         |            |   |   |
| Stock-based compensation expense                                                                                          | 3               | 3 | 2 |
| Research and Development                                                                                                  |            |   |   |
| **Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]**                         |            |   |   |
| Stock-based compensation expense                                                                                          | 146             | 109 | 103 |
| Marketing and sales                                                                                                       |            |   |   |
| **Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]**                         |            |   |   |
| Stock-based compensation expense                                                                                          | 32              | 31 | 24 |
| General And Administrative [Member]                                                                                       |            |   |   |
| **Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]**                         |            |   |   |
| Stock-based compensation expense                                                                                          | $ 61            | $ 53 | $ 49 |

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| - Definition
Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 14.F) -URI http://asc.fasb.org/extlink&oid=27013229&loc=d3e301413-122809Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5047-113901Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1)(i) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901
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|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.
+ References
No definition available.
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| X                                                                                                                                                                    |
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| X                                                                                                                                                                         |
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