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Summary of key assumptions used in calculations of value in use for CGUs (Details)
12 Months Ended
Mar. 31, 2023
Mar. 31, 2022
IfrsStatementLineItems [Line Items]    
Terminal Value growth rate 5.00% 5.00%
[custom:MarginTerm] 5 years  
Bottom of range [member]    
IfrsStatementLineItems [Line Items]    
EBITDA Margin 20.10% 7.50%
Top of range [member]    
IfrsStatementLineItems [Line Items]    
EBITDA Margin 28.70% 25.00%
Bottom of range [member]    
IfrsStatementLineItems [Line Items]    
Pre-Tax Discount rate 27.20% 23.67%
Top of range [member]    
IfrsStatementLineItems [Line Items]    
Pre-Tax Discount rate 30.18% 24.65%