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Defined benefit plans - Summary of actuarial assumptions (Details) | 12 Months Ended
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Dec. 31, 2025 | Dec. 31, 2024
Bottom of range [member] |  |
Defined Benefit Plan Actuarial Assumptions [Line Items] |  |
Discount rate | 3.81% | 3.45%
Future salary increase rate | 1.94% | 1.94%
Weighted average maturity | 4.98 | 5.00
Top of range [member] |  |
Defined Benefit Plan Actuarial Assumptions [Line Items] |  |
Discount rate | 4.93% | 4.66%
Future salary increase rate | 5.96% | 5.94%
Weighted average maturity | 10.04 | 11.00

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- Definition The discount rate used as the significant actuarial assumption to determine the present value of a defined benefit obligation. [Refer: Defined benefit obligation, at present value; Actuarial assumptions [domain]] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 19 -IssueDate 2025-01-01 -Paragraph 144 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2025-en-r&anchor=para_144&doctype=Standard -URIDate 2025-03-27 + Details
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- Definition The expected rate of salary increases used as a significant actuarial assumption to determine the present value of a defined benefit obligation. [Refer: Defined benefit plans [domain]; Defined benefit obligation, at present value; Actuarial assumptions [domain]] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 19 -IssueDate 2025-01-01 -Paragraph 144 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2025-en-r&anchor=para_144&doctype=Standard -URIDate 2025-03-27 + Details
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- Definition Defined Benefit Plan Actuarial assumption. + References No definition available. + Details
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- Definition Weighted average maturity. + References No definition available. + Details
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- Details
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- Details
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