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Employee benefits (Tables) | 12 Months Ended
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Dec. 31, 2021
Text block [abstract] |
Summary of Employee Benefits Provisions | ​
​ | ​ | ​ | ​ | ​
​ | ​ | 31 December | ​ | 31 December
​ |  | 2021 |  | 2020
Retirement pay liability provision |  | 514,118 |  | 301,459
Unused vacation provision |  | 100,495 |  | 80,464
​ | ​ | 614,613 |  | 381,923
Summary of Movement in Provision for Employee Termination Benefits | Movements in provision for employee termination benefits are as follows: ​
​ | ​ | ​ | ​ | ​
​ |  | 2021 |  | 2020
1 January |  | 301,459 |  | 222,164
Service cost |  | 62,749 |  | 38,304
Remeasurements |  | 163,588 |  | 37,230
Interest expense |  | 37,383 |  | 25,535
Benefit payments |  | (51,138) |  | (21,774)
Acquisition through business combinations | ​ | 77 | ​ | —
31 December |  | 514,118 |  | 301,459
Summary of Sensitivity of Provision for Employee Termination Benefits to Changes in the Significant Actuarial Assumptions | The sensitivity of provision for employee termination benefits to changes in the significant actuarial assumptions is: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
31 December 2021 | ​ | Interest Rate | ​ | Inflation Rate | ​
Sensitivity Level |  | 1% increase |  | 1% decrease |  | 1% increase |  | 1% decrease | ​
Change in assumption |  | (13.4) | % | 16.3 | % | 16.5 | % | (13.8) | %
Impact on provision for employee termination benefits |  | (68,892) | ​ | 83,801 | ​ | 84,829 | ​ | (70,948) | ​
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
31 December 2020 | ​ | Interest Rate | ​ | Inflation Rate | ​
Sensitivity Level |  | 1% increase |  | 1% decrease |  | 1% increase |  | 1% decrease | ​
Change in assumption |  | (14.1) | % | 17.3 | % | 17.6 | % | (14.6) | %
Impact on provision for employee termination benefits |  | (42,566) |  | 52,122 |  | 53,117 |  | (43,953) | ​

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- Definition The disclosure of a sensitivity analysis for significant actuarial assumptions used to determine the present value of a defined benefit obligation. [Refer: Actuarial assumptions [member]; Defined benefit obligation, at present value] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 19 -IssueDate 2021-01-01 -Paragraph 145 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=19&code=ifrs-tx-2021-en-r&anchor=para_145&doctype=Standard -URIDate 2021-03-24 + Details
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