XML 254 R129.htm IDEA: XBRL DOCUMENT v3.23.2
Financial instruments and risk management - Commodity price risk - Narrative (Details) - Commodity price risk
12 Months Ended
Jun. 30, 2023
Disclosure of detailed information about financial instruments [line items]  
Maximum commodity exposure value at risk 0.75%
Maximum hedging period (in months) 24 months