Financial income and expense (Details) ₨ in Millions, $ in Millions |
12 Months Ended | ||||||||
|---|---|---|---|---|---|---|---|---|---|
|
Mar. 31, 2026
INR (₨)
|
Mar. 31, 2026
USD ($)
|
Mar. 31, 2025
INR (₨)
|
Mar. 31, 2024
INR (₨)
|
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| Disclosure of Financial income and expense [Abstract] | |||||||||
| Finance income | ₨ 1 | $ 0 | ₨ 13 | ₨ 0 | |||||
| Interest expense on lease obligations | 336 | [1] | 4 | 299 | [1] | 250 | [1] | ||
| Interest expense on pension liabilities | 13 | 0 | 2 | 2 | |||||
| Interest expense on borrowings | 3,614 | [1] | 38 | 2,443 | [1] | 1,952 | [1] | ||
| Finance expense | (3,963) | (2,744) | (2,204) | ||||||
| Net finance income / (expense) | ₨ (3,962) | $ (42) | ₨ (2,731) | ₨ (2,204) | |||||
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