Provisions - Summary of Provisions (Detail) ₨ in Millions, $ in Millions |
Mar. 31, 2026
INR (₨)
|
Mar. 31, 2026
USD ($)
|
Mar. 31, 2025
INR (₨)
|
|---|---|---|---|
| Non-current provisions [abstract] | |||
| Provision for decommissioning costs | ₨ 10,304 | $ 110 | ₨ 9,484 |
| Provision for warranty | 265 | 3 | |
| Total | ₨ 10,569 | $ 113 | ₨ 9,484 |
| X | ||||||||||
- Definition The amount of non-current provision for decommissioning, restoration and rehabilitation costs. [Refer: Provision for decommissioning, restoration and rehabilitation costs] Reference 1: http://www.xbrl.org/2003/role/exampleRef
|
| X | ||||||||||
- Definition The amount of non-current provision for warranties. [Refer: Warranty provision] Reference 1: http://www.xbrl.org/2003/role/exampleRef
|
| X | ||||||||||
- Definition The amount of non-current provisions, including provisions for employee benefits. [Refer: Provisions] Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- References No definition available.
|