Segment reporting (Details 1) ₨ in Thousands, $ in Thousands	12 Months Ended
Mar. 31, 2022 INR (₨)	Mar. 31, 2022 USD ($)	Mar. 31, 2021 INR (₨)	Mar. 31, 2020 INR (₨)
Revenue
Revenue	₨ 27,025,675	$ 356,506	₨ 24,319,542	₨ 22,952,067
Country of domicile [member]
Revenue
Revenue	22,399,400		20,292,816	17,808,889
Foreign countries [member]
Revenue
Revenue	₨ 4,626,275		₨ 4,026,726	₨ 5,143,178

The income arising in the course of an entity's ordinary activities. Income is increases in assets, or decreases in liabilities, that result in increases in equity, other than those relating to contributions from holders of equity claims.

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+ Details