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Employee benefits (Details 11)
 12 Months Ended
Dec. 31, 2024
PPSP-R [member]  
IfrsStatementLineItems [Line Items]  
Number of Years 9 years 8 months 15 days
PPSP-R Pre-70 [member]  
IfrsStatementLineItems [Line Items]  
Number of Years 6 years 6 months 7 days
PPSP-NR [member]  
IfrsStatementLineItems [Line Items]  
Number of Years 9 years 6 months 3 days
PPSP-NR Pre-70 [member]  
IfrsStatementLineItems [Line Items]  
Number of Years 6 years 5 months 12 days