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Finance income and charges - Narrative (Details) - Bs. / £ | 6 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021
TURKEY |  |
Disclosure of geographical areas [line items] |  |
Movement in Price Index in hyperinflationary economy | 15.00% |
Venezuela |  |
Disclosure of geographical areas [line items] |  |
Movement in Price Index in hyperinflationary economy | 105.00% | 158.00%
Venezuelan Bolivar Soberano | Venezuela |  |
Disclosure of geographical areas [line items] |  |
Closing foreign exchange rate | 1,540 | 593

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- Definition The spot exchange rate at the end of the reporting period. Exchange rate is the ratio of exchange for two currencies. Spot exchange rate is the exchange rate for immediate delivery. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2022-03-24 -Paragraph 112 -Subparagraph c -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2022-en-r&anchor=para_112_c&doctype=Standard -URIDate 2022-03-24 + Details
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