Property, plant and equipment (Details Textual) - INR (₨) ₨ in Thousands	Mar. 31, 2021	Mar. 31, 2020
Disclosure of Property, plant and equipments [Line Items]
Contractual commitments for acquisition of property, plant and equipment	₨ 2,762,605	₨ 6,140,770
Property, plant and equipment, pledged as security	₨ 11,904,836	₨ 10,888,446

The amount of contractual commitments for the acquisition of property, plant and equipment. [Refer: Property, plant and equipment]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 16
-IssueDate 2020-01-01
-Paragraph 74
-Subparagraph c
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=16&code=ifrs-tx-2020-en-r&anchor=para_74_c&doctype=Standard
-URIDate 2020-01-01

Name:	ifrs-full_ContractualCommitmentsForAcquisitionOfPropertyPlantAndEquipment
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant