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Employee benefit obligations - Plan Asset Composition (Details) | Dec. 31, 2022 | Dec. 31, 2021
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Disclosure of defined benefit plans [abstract] |  |
Cash and equivalent | 0.90% | 2.50%
Debt instruments | 28.00% | 24.90%
Equity instruments | 30.80% | 32.90%
Real estate | 22.80% | 19.60%
Mortgages | 0.00% | 4.70%
Alternative assets | 17.50% | 15.40%
Total | 100.00% | 100.00%

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- Definition The percentage cash and cash equivalents contribute to the fair value of defined benefit plan assets. [Refer: Cash and cash equivalents; Plan assets, at fair value; Defined benefit plans [member]] [Contrast: Cash and cash equivalents, amount contributed to fair value of plan assets] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 19 -IssueDate 2022-03-24 -Paragraph 142 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2022-en-r&anchor=para_142_a&doctype=Standard -URIDate 2022-03-24 + Details
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- Definition The percentage instruments representing debt (rather than equity) contribute to the fair value of defined benefit plan assets. [Refer: Plan assets, at fair value; Defined benefit plans [member]] [Contrast: Debt instruments, amount contributed to fair value of plan assets] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 19 -IssueDate 2022-03-24 -Paragraph 142 -Subparagraph c -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2022-en-r&anchor=para_142_c&doctype=Standard -URIDate 2022-03-24 + Details
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- Definition The percentage equity instruments contribute to the fair value of defined benefit plan assets. [Refer: Plan assets, at fair value; Defined benefit plans [member]] [Contrast: Equity instruments, amount contributed to fair value of plan assets] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 19 -IssueDate 2022-03-24 -Paragraph 142 -Subparagraph b -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2022-en-r&anchor=para_142_b&doctype=Standard -URIDate 2022-03-24 + Details
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- Definition The percentage other types of assets not separately disclosed contribute to the fair value of defined benefit plan assets. [Refer: Plan assets, at fair value; Defined benefit plans [member]] [Contrast: Other assets, amount contributed to fair value of plan assets] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 19 -IssueDate 2022-03-24 -Paragraph 142 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2022-en-r&anchor=para_142&doctype=Standard -URIDate 2022-03-24 + Details
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- Definition The percentage real estate contributes to the fair value of defined benefit plan assets. [Refer: Plan assets, at fair value; Defined benefit plans [member]] [Contrast: Real estate, amount contributed to fair value of plan assets] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 19 -IssueDate 2022-03-24 -Paragraph 142 -Subparagraph d -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2022-en-r&anchor=para_142_d&doctype=Standard -URIDate 2022-03-24 + Details
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- Definition Mortgages, Percentage Contributed To Fair Value Of Plan Assets + References No definition available. + Details
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- Definition Plan Assets At Fair Value Allocation Percentage + References No definition available. + Details
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