| **Goodwill And Acquisition-Related Intangibles, Net (Schedule Of Acquisition-Related Intangibles) (Details) (USD $)In Millions, unless otherwise specified** | Dec. 31, 2014                                                                                                                                                       | Mar. 31, 2014                                                                                                                                                       |
|--------------------------------------------------------------------------------------------------------------------------------------------------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| **Finite-Lived Intangible Assets**                                                                                                                           |                                                                                                                                                                |                                                                                                                                                                |  |
| Gross carrying amount                                                                                                                                        | $ 833us-gaap_FiniteLivedIntangibleAssetsGross                                                                                                                       | $ 833us-gaap_FiniteLivedIntangibleAssetsGross                                                                                                                       |  |
| Accumulated amortization                                                                                                                                     | (706)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization                                                                                                     | (656)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization                                                                                                     |  |
| Acquisition-related intangibles, net                                                                                                                         | 127us-gaap_FiniteLivedIntangibleAssetsNet                                                                                                                           | 177us-gaap_FiniteLivedIntangibleAssetsNet                                                                                                                           | [1] |
| Developed And Core Technology                                                                                                                                |                                                                                                                                                                |                                                                                                                                                                |  |
| **Finite-Lived Intangible Assets**                                                                                                                           |                                                                                                                                                                |                                                                                                                                                                |  |
| Gross carrying amount                                                                                                                                        | 531us-gaap_FiniteLivedIntangibleAssetsGross/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis= us-gaap_DevelopedTechnologyRightsMember                           | 531us-gaap_FiniteLivedIntangibleAssetsGross/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis= us-gaap_DevelopedTechnologyRightsMember                           |  |
| Accumulated amortization                                                                                                                                     | (426)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis= us-gaap_DevelopedTechnologyRightsMember       | (385)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis= us-gaap_DevelopedTechnologyRightsMember       |  |
| Acquisition-related intangibles, net                                                                                                                         | 105us-gaap_FiniteLivedIntangibleAssetsNet/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis= us-gaap_DevelopedTechnologyRightsMember                             | 146us-gaap_FiniteLivedIntangibleAssetsNet/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis= us-gaap_DevelopedTechnologyRightsMember                             |  |
| Trade Names And Trademarks                                                                                                                                   |                                                                                                                                                                |                                                                                                                                                                |  |
| **Finite-Lived Intangible Assets**                                                                                                                           |                                                                                                                                                                |                                                                                                                                                                |  |
| Gross carrying amount                                                                                                                                        | 130us-gaap_FiniteLivedIntangibleAssetsGross/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis= us-gaap_TrademarksMember                                          | 130us-gaap_FiniteLivedIntangibleAssetsGross/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis= us-gaap_TrademarksMember                                          |  |
| Accumulated amortization                                                                                                                                     | (110)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis= us-gaap_TrademarksMember                      | (105)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis= us-gaap_TrademarksMember                      |  |
| Acquisition-related intangibles, net                                                                                                                         | 20us-gaap_FiniteLivedIntangibleAssetsNet/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis= us-gaap_TrademarksMember                                             | 25us-gaap_FiniteLivedIntangibleAssetsNet/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis= us-gaap_TrademarksMember                                             |  |
| Registered User Base And Other Intangibles                                                                                                                   |                                                                                                                                                                |                                                                                                                                                                |  |
| **Finite-Lived Intangible Assets**                                                                                                                           |                                                                                                                                                                |                                                                                                                                                                |  |
| Gross carrying amount                                                                                                                                        | 87us-gaap_FiniteLivedIntangibleAssetsGross/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis= ea_RegisteredUserBaseAndOtherIntangiblesMember                     | 87us-gaap_FiniteLivedIntangibleAssetsGross/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis= ea_RegisteredUserBaseAndOtherIntangiblesMember                     |  |
| Accumulated amortization                                                                                                                                     | (87)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis= ea_RegisteredUserBaseAndOtherIntangiblesMember | (87)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis= ea_RegisteredUserBaseAndOtherIntangiblesMember |  |
| Acquisition-related intangibles, net                                                                                                                         | 0us-gaap_FiniteLivedIntangibleAssetsNet/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis= ea_RegisteredUserBaseAndOtherIntangiblesMember                        | 0us-gaap_FiniteLivedIntangibleAssetsNet/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis= ea_RegisteredUserBaseAndOtherIntangiblesMember                        |  |
| Carrier Contracts And Related                                                                                                                                |                                                                                                                                                                |                                                                                                                                                                |  |
| **Finite-Lived Intangible Assets**                                                                                                                           |                                                                                                                                                                |                                                                                                                                                                |  |
| Gross carrying amount                                                                                                                                        | 85us-gaap_FiniteLivedIntangibleAssetsGross/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis= us-gaap_CustomerContractsMember                                    | 85us-gaap_FiniteLivedIntangibleAssetsGross/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis= us-gaap_CustomerContractsMember                                    |  |
| Accumulated amortization                                                                                                                                     | (83)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis= us-gaap_CustomerContractsMember                | (79)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis= us-gaap_CustomerContractsMember                |  |
| Acquisition-related intangibles, net                                                                                                                         | $ 2us-gaap_FiniteLivedIntangibleAssetsNet/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis= us-gaap_CustomerContractsMember                                     | $ 6us-gaap_FiniteLivedIntangibleAssetsNet/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis= us-gaap_CustomerContractsMember                                     |  |
|                                                                                                                                                              |
| [1]Derived from audited consolidated financial statements.                                                                                                   |

| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              |
|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |
|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                |
|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.
+ References
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| X                                                                                                                                                                                          |
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| X                                                                                                                                                                           |
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| X                                                                                                                                                                    |
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