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Significant Accounting Policies - Summary of Estimated Useful Lives of Assets on Amortization of Assets Other than Goodwill Calculated (Detail)
 12 Months Ended
Mar. 31, 2021
Technology Related Development Costs [Member] | Bottom of Range [Member]  
Disclosure Of Intangible Assets [Line Items]  
Estimated useful lives of intangible assets 2 years
Technology Related Development Costs [Member] | Top of Range [Member]  
Disclosure Of Intangible Assets [Line Items]  
Estimated useful lives of intangible assets 5 years
Software [Member] | Bottom of Range [Member]  
Disclosure Of Intangible Assets [Line Items]  
Estimated useful lives of intangible assets 3 years
Software [Member] | Top of Range [Member]  
Disclosure Of Intangible Assets [Line Items]  
Estimated useful lives of intangible assets 5 years
Customer Related Intangible Assets [Member] | Bottom of Range [Member]  
Disclosure Of Intangible Assets [Line Items]  
Estimated useful lives of intangible assets 7 years
Customer Related Intangible Assets [Member] | Top of Range [Member]  
Disclosure Of Intangible Assets [Line Items]  
Estimated useful lives of intangible assets 10 years
Contract Related Intangible Assets [member] | Bottom of Range [Member]  
Disclosure Of Intangible Assets [Line Items]  
Estimated useful lives of intangible assets 5 years
Contract Related Intangible Assets [member] | Top of Range [Member]  
Disclosure Of Intangible Assets [Line Items]  
Estimated useful lives of intangible assets 6 years
Marketing Related Intangible Assets [member] | Bottom of Range [Member]  
Disclosure Of Intangible Assets [Line Items]  
Estimated useful lives of intangible assets 7 years
Marketing Related Intangible Assets [member] | Top of Range [Member]  
Disclosure Of Intangible Assets [Line Items]  
Estimated useful lives of intangible assets 10 years