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Intangible assets
 12 Months Ended
Mar. 31, 2023
Intangible Assets [Abstract]  
Intangible assets Intangible assets
2023
Acquired
software
technologies		Customer
relationships		Internally generated intangiblesTotal
$$$$
Cost
As at March 31, 2022213,581 345,956 — 559,537 
Additions— — 4,269 4,269 
Exchange differences(739)(1,769)— (2,508)
As at March 31, 2023212,842 344,187 4,269 561,298 
Accumulated amortization
As at March 31, 202267,275 82,694 — 149,969 
Amortization42,795 58,751 — 101,546 
Exchange differences(653)(1,014)— (1,667)
As at March 31, 2023109,417 140,431 — 249,848 
Net book value as at March 31, 2023103,425 203,756 4,269 311,450 
2022
Acquired
software
technologies		Customer
relationships		Internally generated intangiblesTotal
$$$$
Cost
As at March 31, 202172,884 220,090 — 292,974 
Acquired through business combinations141,200 127,600 — 268,800 
Exchange differences(503)(1,734)— (2,237)
As at March 31, 2022213,581 345,956 — 559,537 
Accumulated amortization
As at March 31, 202130,640 27,841 — 58,481 
Amortization36,700 55,112 — 91,812 
Exchange differences(65)(259)— (324)
As at March 31, 202267,275 82,694 — 149,969 
Net book value as at March 31, 2022146,306 263,262 — 409,568