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Employee Benefits - Schedule of Assumptions Used for Actuarial Valuations (Details)
3 Months Ended 12 Months Ended
Mar. 31, 2022
Dec. 31, 2021
Defined Benefit Plan Disclosure [Line Items]    
Discount rate (Corp AA) 2.25% 1.40%
Expected rate of salary increase 5.00% 5.00%
Minimum    
Defined Benefit Plan Disclosure [Line Items]    
Expected rate of social charges 49.00% 49.00%
Expected staff turnover 0.00% 0.00%
Maximum    
Defined Benefit Plan Disclosure [Line Items]    
Expected rate of social charges 50.00% 50.00%
Expected staff turnover 17.80% 17.80%