v3.26.1
Events after the reporting period - Additional Information (Details)
12 Months Ended
Jun. 01, 2026
USD ($)
Apr. 16, 2026
INR (₨)
₨ / shares
shares
Apr. 16, 2026
USD ($)
$ / shares
Apr. 08, 2026
INR (₨)
Apr. 08, 2026
USD ($)
Mar. 31, 2026
INR (₨)
Mar. 31, 2026
USD ($)
Mar. 31, 2025
INR (₨)
₨ / shares
Mar. 31, 2024
INR (₨)
₨ / shares
shares
May 31, 2026
USD ($)
Apr. 16, 2026
$ / shares
shares
Apr. 14, 2026
USD ($)
Dec. 03, 2024
₨ / shares
Disclosure of non-adjusting events after reporting period [line items]                          
Number of shares approved for buyback | shares                 269,662,921        
Par value per share | ₨ / shares               ₨ 2 ₨ 2       ₨ 2
Payments on buyback of shares           ₨ 0 $ 0 ₨ 0 ₨ 145,173,000,000        
Contingent consideration | ₨           ₨ (1,634,000,000)   ₨ (1,864,000,000) ₨ (429,000,000)        
Events After The Reporting Period [Member]                          
Disclosure of non-adjusting events after reporting period [line items]                          
Number of shares approved for buyback | shares   600,000,000                 600,000,000    
Par value per share | (per share)   ₨ 2                 $ 0.02 [1]    
Repurchase share percentage of equity shares   5.70% 5.70%                    
Shares repurchased offer price per share | (per share)   ₨ 250 $ 2.71 [1]                    
Certified foreign exchange rate by federal reserve board of governors       ₨ 92.25 $ 1                
Payments on buyback of shares   ₨ 150,000,000,000 $ 1,626,000,000 [1]                    
Events After The Reporting Period [Member] | Mindsprint, Olam Group [Member]                          
Disclosure of non-adjusting events after reporting period [line items]                          
Consideration in cash                   $ 375,000,000      
Events After The Reporting Period [Member] | Alpha Net Consulting [Member]                          
Disclosure of non-adjusting events after reporting period [line items]                          
Consideration in cash                       $ 70,800,000  
Events After The Reporting Period [Member] | Aggne Global Inc [member]                          
Disclosure of non-adjusting events after reporting period [line items]                          
Percentage of ownership interest 20.00%                        
Purchase consideration for additional equity interest $ 28,500,000                        
[1] Based on the certified foreign exchange rates published by the Federal Reserve Board of Governors on April 8, 2026, which was ₹ 92.25 per U.S.$ 1.
d)
On June 1, 2026, the Company acquired additional 20% equity interest in Aggne Global Inc. for a consideration of U.S.$ 28.5 million.