| **Stock-Based Compensation (Schedule Of Stock-Based Compensation Expense By Statement Of Operations) (Details) - USD ($) $ in Millions** | 3 Months Ended | 6 Months Ended |
|------------------------------------------------------------------------------------------------------------------------------------------|----------------|----------------|
||
| **Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]**                                        |           |           |   |   |
| Stock-based compensation expense                                                                                                         | $ 44           | $ 40           | $ 89 | $ 69 |
| Cost of Sales [Member]                                                                                                                   |           |           |   |   |
| **Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]**                                        |           |           |   |   |
| Stock-based compensation expense                                                                                                         | 1              | 1              | 1 | 1 |
| Research And Development [Member]                                                                                                        |           |           |   |   |
| **Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]**                                        |           |           |   |   |
| Stock-based compensation expense                                                                                                         | 25             | 23             | 51 | 39 |
| Marketing and Sales [Member]                                                                                                             |           |           |   |   |
| **Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]**                                        |           |           |   |   |
| Stock-based compensation expense                                                                                                         | 7              | 6              | 12 | 10 |
| General And Administrative [Member]                                                                                                      |           |           |   |   |
| **Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]**                                        |           |           |   |   |
| Stock-based compensation expense                                                                                                         | $ 11           | $ 10           | $ 25 | $ 19 |

| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |
|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - 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=6415400&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=6415400&loc=d3e5070-113901Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 14 -Section F
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |
|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - 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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| X                                                                                                                                                                    |
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| X                                                                                                                                                                         |
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