v3.26.1
Goodwill and Intangible Assets - Summary of Goodwill Has Been Re-Allocated to The CGUs Using a Relative Value Approach (Detail)
₨ in Millions, $ in Millions
Mar. 31, 2026
INR (₨)
Mar. 31, 2026
USD ($)
Mar. 31, 2025
INR (₨)
Mar. 31, 2024
INR (₨)
Disclosure of information for cash-generating units [line items]        
Goodwill ₨ 387,399 $ 4,129 ₨ 325,014 ₨ 316,002
Americas 1 [member]        
Disclosure of information for cash-generating units [line items]        
Goodwill 132,869   108,111  
Americas 2 [member]        
Disclosure of information for cash-generating units [line items]        
Goodwill 122,472   106,529  
Europe [member]        
Disclosure of information for cash-generating units [line items]        
Goodwill 96,381   81,955  
Asia Pacific Middle East Africa [member]        
Disclosure of information for cash-generating units [line items]        
Goodwill ₨ 35,677   ₨ 28,419