| **Business Combinations (Schedule Of Intangible Assets Acquired) (Details) (PopCap [Member], USD $)In Millions, unless otherwise specified** | 1 Months Ended |
|----------------------------------------------------------------------------------------------------------------------------------------------|----------------|
||
| **Business Acquisition [Line Items]**                                                                                                        |           |
| Gross Carrying Amount                                                                                                                        | $ 302          |
| Weighted-Average Useful Life                                                                                                                 | 6 years        |
| Developed And Core Technology                                                                                                                |           |
| **Business Acquisition [Line Items]**                                                                                                        |           |
| Gross Carrying Amount                                                                                                                        | 245            |
| Weighted-Average Useful Life                                                                                                                 | 6 years        |
| Trade Names And Trademarks                                                                                                                   |           |
| **Business Acquisition [Line Items]**                                                                                                        |           |
| Gross Carrying Amount                                                                                                                        | 40             |
| Weighted-Average Useful Life                                                                                                                 | 9 years        |
| In-Process Research And Development                                                                                                          |           |
| **Business Acquisition [Line Items]**                                                                                                        |           |
| Gross Carrying Amount                                                                                                                        | 15             |
| Weighted-Average Useful Life                                                                                                                 | 5 years        |
| Other Intangibles [Member]                                                                                                                   |           |
| **Business Acquisition [Line Items]**                                                                                                        |           |
| Gross Carrying Amount                                                                                                                        | $ 2            |
| Weighted-Average Useful Life                                                                                                                 | 4 years        |

| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |
|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16265-109275
+ Details**Name:**us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife**Namespace Prefix:**us-gaap_**Data Type:**xbrli:durationItemType**Balance Type:**na**Period Type:**duration |
| X                                                                                                                                                                |
|------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Details**Name:**us-gaap_BusinessAcquisitionLineItems**Namespace Prefix:**us-gaap_**Data Type:**xbrli:stringItemType**Balance Type:**na**Period Type:**duration |
| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |
|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The amount of identifiable intangible assets recognized as of the acquisition date.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6910749&loc=d3e4845-128472Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 55 -Paragraph 37 -URI http://asc.fasb.org/extlink&oid=25498275&loc=d3e2207-128464
+ Details**Name:**us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles**Namespace Prefix:**us-gaap_**Data Type:**xbrli:monetaryItemType**Balance Type:**debit**Period Type:**instant |