v3.26.1
Summary of Significant Accounting Policies - Narrative (Details)
$ / shares in Units, $ in Millions
 3 Months Ended 9 Months Ended 12 Months Ended
Jun. 30, 2025
Mar. 31, 2026
USD ($)
customer
Mar. 31, 2026
USD ($)
customer
segment
$ / shares
Mar. 31, 2025
USD ($)
customer
$ / shares
Mar. 31, 2024
USD ($)
$ / shares
Property, Plant and Equipment [Line Items]          
Capitalized computer software, net   $ 135 $ 135 $ 105  
Number of reportable segments | segment     1    
Number of operating segments | segment     1    
Decrease in net income     $ (887) $ (1,121) $ (1,273)
Decrease in earnings per share, diluted (in dollars per share) | $ / shares     $ (3.51) $ (4.25) $ (4.68)
Number of major customers | customer   2 2 2  
Advertising expense, net of vendor reimbursements     $ 354 $ 289 $ 375
Net gain (loss) on foreign currency transactions     13 (29) (10)
Net gain (loss) on foreign currency forward contracts     $ (10) $ 45 $ 12
Software and Software Development Costs          
Property, Plant and Equipment [Line Items]          
Property, plant and equipment, useful life   3 years 3 years    
Performance Obligation Period          
Property, Plant and Equipment [Line Items]          
Decrease in revenue from contract with customer, excluding assessed tax     $ 74    
Decrease in net income     $ 56    
Decrease in earnings per share, diluted (in dollars per share) | $ / shares     $ 0.22    
Digitally-Distributed Games          
Property, Plant and Equipment [Line Items]          
Service-related performance obligations, offering period     8 months    
Games and Extra Content Sold Through Retail          
Property, Plant and Equipment [Line Items]          
Service-related performance obligations, offering period     10 months    
Mobile Free-to-Play Games          
Property, Plant and Equipment [Line Items]          
Service-related performance obligations, offering period 8 months 11 months      
PC and Console Free-to-Play Games          
Property, Plant and Equipment [Line Items]          
Service-related performance obligations, offering period 12 months 11 months      
Revenue recognized at a point in time          
Property, Plant and Equipment [Line Items]          
Percentage of sales price     75.00%    
Revenue recognized over time          
Property, Plant and Equipment [Line Items]          
Percentage of sales price     25.00%    
Accounts Receivable | Customer Concentration Risk | Customer A          
Property, Plant and Equipment [Line Items]          
Concentration risk, percentage     30.00% 35.00%  
Accounts Receivable | Customer Concentration Risk | Customer B          
Property, Plant and Equipment [Line Items]          
Concentration risk, percentage     28.00% 28.00%  
Net revenue | Customer Concentration Risk | Sales Channel, Through Intermediary          
Property, Plant and Equipment [Line Items]          
Concentration risk, percentage     86.00% 88.00% 80.00%
Net revenue | Customer Concentration Risk | Sales Channel, Directly to Consumer          
Property, Plant and Equipment [Line Items]          
Concentration risk, percentage     60.00% 62.00% 59.00%
Minimum          
Property, Plant and Equipment [Line Items]          
Finite-lived intangible asset, useful life   2 years 2 years    
Maximum          
Property, Plant and Equipment [Line Items]          
Finite-lived intangible asset, useful life   7 years 7 years