Employee benefits (Details 7) - Parent Company Gratuity plan [Member]	Mar. 31, 2022	Mar. 31, 2021
Funds managed by Insurers [Member]
Disclosure of defined benefit plans [line items]
Percentage of Weighted average asset allocation	100.00%	100.00%
Others [Member]
Disclosure of defined benefit plans [line items]
Percentage of Weighted average asset allocation	0.00%	0.00%

Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table.

No definition available.

Name:	ifrs-full_DisclosureOfDefinedBenefitPlansLineItems
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration