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Contingent liabilities and legal proceedings - Acquisition of USL shares from UBHL, winding-up petitions against UBHL and other proceedings in relation to the USL transaction (Details) - United Spirits Limited - ₨ / shares | Dec. 31, 2020 | Jul. 04, 2013
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Disclosure of contingent liabilities [line items] |  |
Percentage of interest acquired |  | 14.98%
Proportion of ownership interest in subsidiary | 55.88% |
USL Benefit Trust |  |
Disclosure of contingent liabilities [line items] |  |
Ownership interest held by external party | 2.38% |
UBHL |  |
Disclosure of contingent liabilities [line items] |  |
Percentage of interest acquired |  | 6.98%
Acquisition price per share (in INR per share) |  | ₨ 1,440

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- Definition The proportion of ownership interest in a subsidiary attributable to the entity. [Refer: Total for all subsidiaries [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 27 -IssueDate 2024-01-01 -Paragraph 17 -Subparagraph b -Clause iii -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=27&code=ifrs-tx-2024-en-r&anchor=para_17_b_iii&doctype=Standard -URIDate 2024-03-27 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 27 -IssueDate 2024-01-01 -Paragraph 16 -Subparagraph b -Clause iii -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=27&code=ifrs-tx-2024-en-r&anchor=para_16_b_iii&doctype=Standard -URIDate 2024-03-27 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 12 -IssueDate 2024-01-01 -Paragraph 19B -Subparagraph c -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2024-en-r&anchor=para_19B_c&doctype=Standard -URIDate 2024-03-27 + Details
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