v3.25.2
Right of use assets - Summary of Right of Use Assets (Detail)
₨ in Millions, $ in Millions
 12 Months Ended
Mar. 31, 2025
INR (₨)
Mar. 31, 2025
USD ($)
Mar. 31, 2024
INR (₨)
Mar. 31, 2023
INR (₨)
Disclosure of quantitative information about right-of-use assets [line items]        
Beginning balance Right-of-use assets ₨ 12,898   ₨ 10,618  
Charge for the year 97 $ 1 470 ₨ 405
Ending balance Right-of-use assets 14,506 170 12,898 10,618
Leasehold land        
Disclosure of quantitative information about right-of-use assets [line items]        
Beginning balance Right-of-use assets 12,432   9,950  
Ending balance Right-of-use assets 13,900 163 12,432 9,950
Building        
Disclosure of quantitative information about right-of-use assets [line items]        
Beginning balance Right-of-use assets 466   668  
Ending balance Right-of-use assets 606 $ 7 466 668
Cost        
Disclosure of quantitative information about right-of-use assets [line items]        
Beginning balance Right-of-use assets 14,873   12,065 8,505
Additions during the year 2,463   3,253 3,776
Disposals and adjustments during the year (235)   (445) (216)
Ending balance Right-of-use assets 17,101   14,873 12,065
Cost | Leasehold land        
Disclosure of quantitative information about right-of-use assets [line items]        
Beginning balance Right-of-use assets 13,654   10,865 8,009
Additions during the year 2,072   3,234 3,072
Disposals and adjustments during the year (235)   (445) (216)
Ending balance Right-of-use assets 15,491   13,654 10,865
Cost | Building        
Disclosure of quantitative information about right-of-use assets [line items]        
Beginning balance Right-of-use assets 1,219   1,200 496
Additions during the year 391   19 704
Ending balance Right-of-use assets 1,610   1,219 1,200
Accumulated Depreciation        
Disclosure of quantitative information about right-of-use assets [line items]        
Beginning balance Right-of-use assets 1,975   1,447 1,010
Charge for the year 97   470 405
Capitalised during the year 558   108 34
Disposals and adjustments during the year (35)   (50) (2)
Ending balance Right-of-use assets 2,595   1,975 1,447
Accumulated Depreciation | Leasehold land        
Disclosure of quantitative information about right-of-use assets [line items]        
Beginning balance Right-of-use assets 1,222   915 602
Charge for the year 18   341 315
Capitalised during the year 386   16  
Disposals and adjustments during the year (35)   (50) (2)
Ending balance Right-of-use assets 1,591   1,222 915
Accumulated Depreciation | Building        
Disclosure of quantitative information about right-of-use assets [line items]        
Beginning balance Right-of-use assets 753   532 408
Charge for the year 79   129 90
Capitalised during the year 172   92 34
Ending balance Right-of-use assets ₨ 1,004   ₨ 753 ₨ 532