Inventories - Additional Information (Details) - INR (₨) ₨ in Millions	12 Months Ended
Mar. 31, 2024	Mar. 31, 2023
Classes of current inventories [abstract]
Changes in inventories recognized as expense	₨ 278	₨ 150
Purchases of traded goods recognized as expense	₨ 3,832	₨ 6,494

The decrease (increase) in inventories of finished goods and work in progress. [Refer: Inventories; Current finished goods; Current work in progress]

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Name IAS
-Number 1
-IssueDate 2023-01-01
-Paragraph 102
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-URIDate 2023-03-23

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 1
-IssueDate 2023-01-01
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-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2023-en-r&anchor=para_99&doctype=Standard
-URIDate 2023-03-23

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration