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Income Taxes (Narrative) (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2022
Sep. 30, 2021
Income Tax Footnote Disclosure [Line Items]        
Gross unrecognized tax benefits $ 743   $ 743  
Effective Income Tax Rate Reconciliation, Percent 30.00% 10.00% 29.00% 21.00%
Provision for income taxes $ 128 $ 32 $ 253 $ 136
Codemasters Group Holdings plc [Member]        
Income Tax Footnote Disclosure [Line Items]        
Effective Income Tax Rate Reconciliation, Percent   28.00%   3100.00%
Provision for income taxes   $ 60