Other intangible assets (Details 1) ₨ in Millions, $ in Millions	12 Months Ended
Mar. 31, 2026 INR (₨)	Mar. 31, 2026 USD ($)	Mar. 31, 2025 INR (₨)
Disclosure of detailed information about intangible assets [line items]
Beginning balance	₨ 96,803		₨ 36,951
Less: Impairment	(406)
Ending balance	105,059	$ 1,120	96,803
In-process research and development assets [member]
Disclosure of detailed information about intangible assets [line items]
Beginning balance	662		683
Add: Additions during the year	0		85
Less: Capitalizations during the year	(267)		(70)
Less: Impairment	(406)		(43)
Effect of changes in foreign exchange rates	11		7
Ending balance	₨ 0		₨ 662

The amount of additions to intangible assets other than goodwill, other than those acquired through business combinations. [Refer: Total for all business combinations [member]; Intangible assets other than goodwill]

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+ References

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The amount of identifiable non-monetary assets without physical substance. This amount does not include goodwill. [Refer: Goodwill]

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