v3.26.1
Financial Instruments - Fair values and risk management (Details 2) - Unlisted Equity Securities [Member]
 12 Months Ended
Dec. 31, 2025
Tsiveriotis Fernandes Model [Member]  
IfrsStatementLineItems [Line Items]  
Significant Unobservable Inputs Volatility (Dec 31, 2025: 53.5%)
Relationship between Fair Value and Unobservable Inputs Estimated fair value decreases as expected volatility decreases.
Tsiveriotis Fernandes Model 1 [Member]  
IfrsStatementLineItems [Line Items]  
Significant Unobservable Inputs Volatility (Dec 31, 2025: 53.5%)
Relationship between Fair Value and Unobservable Inputs Estimated fair value increases as expected volatility increases.
Monte Carlo Simulation [Member]  
IfrsStatementLineItems [Line Items]  
Significant Unobservable Inputs Volatility (Dec 31, 2025: 53.5%)
Relationship between Fair Value and Unobservable Inputs Estimated fair value increases as expected volatility increases.
Binomial Option Pricing Model [Member]  
IfrsStatementLineItems [Line Items]  
Significant Unobservable Inputs Volatility (Dec 31, 2025: 53.5%)
Relationship between Fair Value and Unobservable Inputs Estimated fair value decreases as expected volatility decreases.