|**Stock-Based Compensation (Tables)**                                              | 9 Months Ended                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
|---------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|
|**Share-based Compensation Arrangement by Share-based Payment Award [Line Items]** |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               
|Schedule Of Assumptions Used In The Black-Scholes Valuation Model                  | The estimated assumptions used in the Black-Scholes valuation model to value our stock option grants were as follows:Stock Option GrantsESPPThree Months EndedDecember 31,Nine Months EndedDecember 31,Nine Months EndedDecember 31,201220112012201120122011Risk-free interest rate0.4 - 1.0%0.4 - 1.2%0.4 - 1.0%0.4 - 1.8%0.1 - 0.2%0.1%Expected volatility40 - 45%42 - 46%40 - 46%40 - 46%41 - 42%39 - 40%Weighted-average volatility41%45%43%43%41%39%Expected term4.3 years4.1 years4.4 years4.4 years6 - 12 months6 - 12 monthsExpected dividendsNoneNoneNoneNoneNoneNone
|                                                                                  
|                                                                                   |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               
|                                                                                   | Stock Option Grants                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           
|                                                                                   | Three Months EndedDecember 31,                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
|                                                                                   | 2012                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
|Risk-free interest rate                                                            | 0.4 - 1.0%                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
|Expected volatility                                                                | 40 - 45%                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
|Weighted-average volatility                                                        | 41                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
|Expected term                                                                      | 4.3 years                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     
|Expected dividends                                                                 | None                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
|Schedule Of Assumptions Used In Monte-Carlo Simulation Model                       | The estimated assumptions used in the Monte-Carlo simulation model to value our market-based restricted stock units were as follows:Three Months EndedDecember 31,Nine Months EndedDecember 31,201220122011Risk-free interest rate0.3%0.2 - 0.4%0.2 - 0.6%Expected volatility33%17 - 116%14 - 83%Weighted-average volatility33%35%35%Expected dividendsNoneNoneNone                                                                                                                                                                                                           
|                                                                                  
|                                                                                   |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               
|                                                                                   | Three Months EndedDecember 31,                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
|                                                                                   | 2012                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
|Risk-free interest rate                                                            | 0.3                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           
|Expected volatility                                                                | 33                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
|Weighted-average volatility                                                        | 33                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
|Expected dividends                                                                 | None                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
|Schedule Of Stock-Based Compensation Expense By Statement Of Operations            | The following table summarizes stock-based compensation expense resulting from stock options, restricted stock, restricted stock units and the ESPP included in our Condensed Consolidated Statements of Operations (in millions):Three Months EndedDecember 31,Nine Months EndedDecember 31,2012201120122011Cost of revenue$—$—$1$1Research and development25307481General and administrative7112529Marketing and sales772218Stock-based compensation expense$39$48$122$129                                                                                                  
|                                                                                  
|                                                                                   |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               
|                                                                                   | Three Months EndedDecember 31,                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
|                                                                                   | 2012                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
|Cost of revenue                                                                    | $                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             
|Research and development                                                           | 25                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
|General and administrative                                                         | 7                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             
|Marketing and sales                                                                | 7                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             
|Stock-based compensation expense                                                   | $                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             
|Employee Stock Option [Member]                                                     |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               
|**Share-based Compensation Arrangement by Share-based Payment Award [Line Items]** |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               
|Disclosure Of Stock-Based Compensation Arrangements By Stock-Based Payment Award   | The following table summarizes our stock option activity for thenine months ended December 31, 2012:Options(in thousands)Weighted-AverageExercise PriceWeighted-AverageRemainingContractual Term(in years)AggregateIntrinsic Value(in millions)Outstanding as of March 31, 20129,774$34.17Granted29213.10Exercised(17)13.08Forfeited, cancelled or expired(2,019)32.75Outstanding as of December 31, 20128,03033.824.75$—Vested and expected to vest7,96833.974.72$—Exercisable as of December 31, 20127,40135.244.46$—                                                       
|                                                                                  
|                                                                                   |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               
|                                                                                   | Options(in thousands)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         
|Outstanding as of March 31, 2012                                                   | 9,774                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         
|Granted                                                                            | 292                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           
|Exercised                                                                          | (17                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           
|Forfeited, cancelled or expired                                                    | (2,019                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
|Outstanding as of December 31, 2012                                                | 8,030                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         
|Vested and expected to vest                                                        | 7,968                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         
|Exercisable as of December 31, 2012                                                | 7,401                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         
|Restricted Stock Rights [Member]                                                   |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               
|**Share-based Compensation Arrangement by Share-based Payment Award [Line Items]** |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               
|Disclosure Of Stock-Based Compensation Arrangements By Stock-Based Payment Award   | The following table summarizes our restricted stock rights activity, excluding performance-based and market-based restricted stock unit activity discussed below, for thenine months ended December 31, 2012:Restricted StockRights(in thousands)Weighted-Average GrantDate Fair ValueBalance as of March 31, 201216,323$20.73Granted8,68412.62Vested(5,751)20.88Forfeited or cancelled(1,655)18.91Balance as of December 31, 201217,60116.85                                                                                                                                 
|                                                                                  
|                                                                                   |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               
|                                                                                   | Restricted StockRights(in thousands)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
|Balance as of March 31, 2012                                                       | 16,323                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
|Granted                                                                            | 8,684                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         
|Vested                                                                             | (5,751                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
|Forfeited or cancelled                                                             | (1,655                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
|Balance as of December 31, 2012                                                    | 17,601                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
|Performance Based Restricted Stock Units [Member]                                  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               
|**Share-based Compensation Arrangement by Share-based Payment Award [Line Items]** |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               
|Disclosure Of Stock-Based Compensation Arrangements By Stock-Based Payment Award   | The following table summarizes our performance-based restricted stock unit activity for thenine months ended December 31, 2012:Performance-Based RestrictedStock Units(in thousands)Weighted-Average GrantDate Fair ValueBalance as of March 31, 20121,421$50.35Vested(19)15.39Forfeited or cancelled(78)38.67Balance as of December 31, 20121,32451.54                                                                                                                                                                                                                       
|                                                                                  
|                                                                                   |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               
|                                                                                   | Performance-Based RestrictedStock Units(in thousands)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         
|Balance as of March 31, 2012                                                       | 1,421                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         
|Vested                                                                             | (19                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           
|Forfeited or cancelled                                                             | (78                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           
|Balance as of December 31, 2012                                                    | 1,324                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         
|Market-Based Restricted Stock Units [Member]                                       |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               
|**Share-based Compensation Arrangement by Share-based Payment Award [Line Items]** |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               
|Disclosure Of Stock-Based Compensation Arrangements By Stock-Based Payment Award   | The following table summarizes our market-based restricted stock unit activity for thenine months ended December 31, 2012. We present shares granted at100 percentof target of the number of stock units that may potentially vest.Market-BasedRestricted StockUnits(in thousands)Weighted-Average GrantDate Fair ValueBalance as of March 31, 2012520$34.77Granted97012.41Vested(111)34.77Forfeited or cancelled(62)34.77Balance as of December 31, 20121,31718.30                                                                                                           
|                                                                                  
|                                                                                   |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               
|                                                                                   | Market-BasedRestricted StockUnits(in thousands)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               
|Balance as of March 31, 2012                                                       | 520                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           
|Granted                                                                            | 970                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           
|Vested                                                                             | (111                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
|Forfeited or cancelled                                                             | (62                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           
|Balance as of December 31, 2012                                                    | 1,317                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         

X- DefinitionSchedule of assumptions used in the Black-Scholes valuation model+ ReferencesNo definition available.+ Details**Name:**
                    ea_ScheduleOfAssumptionsUsedInBlackScholesValuationModelTableTextBlock**Namespace Prefix:**
                    ea_**Data Type:**
                    nonnum:textBlockItemType**Balance Type:**
                    na**Period Type:**
                    duration X- DefinitionSchedule of assumptions used in Monte Carlo simulation model.+ ReferencesNo definition available.+ Details**Name:**
                    ea_ScheduleOfAssumptionsUsedInMonteCarloSimulationModelTableTextBlock**Namespace Prefix:**
                    ea_**Data Type:**
                    nonnum:textBlockItemType**Balance Type:**
                    na**Period Type:**
                    duration X- DefinitionTabular disclosure of components of a stock option or other award plan under which equity-based compensation is awarded to employees, typically comprised of the amount of unearned compensation (deferred compensation cost), compensation expense, and changes in the quantity and fair value of the shares (or other type of equity) granted, exercised, forfeited, and issued and outstanding pertaining to that plan.  Disclosure may also include nature and general terms of such arrangements that existed during the period and potential effects of those arrangements on shareholders, effect of compensation cost arising from equity-based payment arrangements on the income statement, method of estimating the fair value of the goods or services received, or the fair value of the equity instruments granted, during the period, cash flow effects resulting from equity-based payment arrangements and, for registrants that accelerate vesting of out of the money share options, reasons for the decision to accelerate.+ ReferencesReference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph 64, 65, A240 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.+ Details**Name:**
                    us-gaap_DisclosureOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTextBlock**Namespace Prefix:**
                    us-gaap_**Data Type:**
                    nonnum:textBlockItemType**Balance Type:**
                    na**Period Type:**
                    duration X- DefinitionTabular disclosure of the allocation of equity-based compensation costs to a given line item on the balance sheet and income statement for the period. This may include the reporting line for the costs and the amount capitalized and expensed.+ ReferencesReference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph g(1) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 14 -Section FReference 3: 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 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph 64 -Subparagraph b -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.Reference 6: 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=6793087&loc=d3e301413-122809+ Details**Name:**
                    us-gaap_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTextBlock**Namespace Prefix:**
                    us-gaap_**Data Type:**
                    nonnum:textBlockItemType**Balance Type:**
                    na**Period Type:**
                    duration X- Details**Name:**
                    us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems**Namespace Prefix:**
                    us-gaap_**Data Type:**
                    xbrli:stringItemType**Balance Type:**
                    na**Period Type:**
                    duration