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SOFTWARE DEVELOPMENT COSTS AND LICENSES (Details) - USD ($)
$ in Millions
12 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Mar. 31, 2021
Capitalized software development costs and licenses      
Software development costs and licenses, Current $ 65.9 $ 81.4  
Software development costs and licenses, Non-current 1,072.2 755.9  
Software development costs and licenses related to titles not released 1,010.2 738.0  
Amortization and impairment of software development costs and licenses      
Amortization of software development costs and licenses 179.7 131.1 $ 113.9
Impairment charges 79.1 70.6 39.1
Portion representing stock-based compensation 9.5 (48.4) (8.7)
Amortization and impairment, net of stock-based compensation 268.3 153.3 144.3
Software Development Costs And Licenses      
Amortization and impairment of software development costs and licenses      
Amortization of software development costs and licenses 41.2 46.8 $ 43.3
Software development costs and licenses reduced 108.1 96.9  
Research and development expense 4.5    
Software development costs, internally developed      
Capitalized software development costs and licenses      
Software development costs and licenses, Current 47.4 59.2  
Software development costs and licenses, Non-current 882.0 599.3  
Software development costs, externally developed      
Capitalized software development costs and licenses      
Software development costs and licenses, Current 2.2 19.3  
Software development costs and licenses, Non-current 169.7 145.2  
Licenses      
Capitalized software development costs and licenses      
Software development costs and licenses, Current 16.3 2.9  
Software development costs and licenses, Non-current 20.5 11.4  
Software Development Costs And Licenses, Government Grants      
Capitalized software development costs and licenses      
Software development costs and licenses, Current 0.0 10.0  
Software development costs and licenses, Non-current $ 256.8 $ 256.5