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Intangible assets (Details) - USD ($)
$ in Thousands
 12 Months Ended
Mar. 31, 2024
Mar. 31, 2023
Disclosure of detailed information about intangible assets [line items]    
Intangible assets other than goodwill at beginning of period $ 311,450  
Amortization (95,048) $ (101,546)
Intangible assets other than goodwill at end of period 227,031 311,450
Acquired software technologies    
Disclosure of detailed information about intangible assets [line items]    
Intangible assets other than goodwill at beginning of period 103,425  
Intangible assets other than goodwill at end of period 67,003 103,425
Customer relationships    
Disclosure of detailed information about intangible assets [line items]    
Intangible assets other than goodwill at beginning of period 203,756  
Intangible assets other than goodwill at end of period 145,243 203,756
Capitalized software technologies    
Disclosure of detailed information about intangible assets [line items]    
Intangible assets other than goodwill at beginning of period 4,269  
Intangible assets other than goodwill at end of period 14,785 4,269
Gross carrying amount    
Disclosure of detailed information about intangible assets [line items]    
Intangible assets other than goodwill at beginning of period 561,298 559,537
Additions 10,516 4,269
Exchange differences (690) (2,508)
Intangible assets other than goodwill at end of period 571,124 561,298
Gross carrying amount | Acquired software technologies    
Disclosure of detailed information about intangible assets [line items]    
Intangible assets other than goodwill at beginning of period 212,842 213,581
Additions 0 0
Exchange differences (193) (739)
Intangible assets other than goodwill at end of period 212,649 212,842
Gross carrying amount | Customer relationships    
Disclosure of detailed information about intangible assets [line items]    
Intangible assets other than goodwill at beginning of period 344,187 345,956
Additions 0 0
Exchange differences (497) (1,769)
Intangible assets other than goodwill at end of period 343,690 344,187
Gross carrying amount | Capitalized software technologies    
Disclosure of detailed information about intangible assets [line items]    
Intangible assets other than goodwill at beginning of period 4,269 0
Additions 10,516 4,269
Exchange differences 0 0
Intangible assets other than goodwill at end of period 14,785 4,269
Accumulated depreciation    
Disclosure of detailed information about intangible assets [line items]    
Intangible assets other than goodwill at beginning of period (249,848) (149,969)
Exchange differences (803) (1,667)
Amortization 95,048 101,546
Intangible assets other than goodwill at end of period (344,093) (249,848)
Accumulated depreciation | Acquired software technologies    
Disclosure of detailed information about intangible assets [line items]    
Intangible assets other than goodwill at beginning of period (109,417) (67,275)
Exchange differences (193) (653)
Amortization 36,422 42,795
Intangible assets other than goodwill at end of period (145,646) (109,417)
Accumulated depreciation | Customer relationships    
Disclosure of detailed information about intangible assets [line items]    
Intangible assets other than goodwill at beginning of period (140,431) (82,694)
Exchange differences (610) (1,014)
Amortization 58,626 58,751
Intangible assets other than goodwill at end of period (198,447) (140,431)
Accumulated depreciation | Capitalized software technologies    
Disclosure of detailed information about intangible assets [line items]    
Intangible assets other than goodwill at beginning of period 0 0
Exchange differences 0 0
Amortization 0 0
Intangible assets other than goodwill at end of period $ 0 $ 0