| **Goodwill And Acquisition-Related Intangibles, Net (Schedule Of Amortization Of Intangible Assets) (Details) - USD ($) $ in Millions** | 12 Months Ended |
|-----------------------------------------------------------------------------------------------------------------------------------------|-----------------|
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| **Finite-Lived Intangible Assets Classified by Expense**                                                                                |            |   |   |
| Amortization of intangibles                                                                                                             | $ 7             | $ 14 | $ 16 |
| Cost of product                                                                                                                         |            |   |   |
| **Finite-Lived Intangible Assets Classified by Expense**                                                                                |            |   |   |
| Amortization of intangibles                                                                                                             | 14              | 16 | 33 |
| Cost of service and other                                                                                                               |            |   |   |
| **Finite-Lived Intangible Assets Classified by Expense**                                                                                |            |   |   |
| Amortization of intangibles                                                                                                             | 33              | 36 | 27 |
| Operating expenses                                                                                                                      |            |   |   |
| **Finite-Lived Intangible Assets Classified by Expense**                                                                                |            |   |   |
| Amortization of intangibles                                                                                                             | 7               | 14 | 16 |
| Total amortization                                                                                                                      |            |   |   |
| **Finite-Lived Intangible Assets Classified by Expense**                                                                                |            |   |   |
| Amortization of intangibles                                                                                                             | $ 54            | $ 66 | $ 76 |

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| - Definition
Finite-Lived Intangible Assets Classified by Expense [Line Items]
+ References
No definition available.
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| - Definition
The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16225-109274Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3602-108585Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275
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| X                                                                                                                                                                                                                  |
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