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Equity - Schedule of transactions on the executive share award plans (Details) - Executive share award plans - shares
shares in Millions
12 Months Ended
Jun. 30, 2024
Jun. 30, 2023
Jun. 30, 2022
Disclosure of number and weighted average remaining contractual life of outstanding share options [line items]      
Balance outstanding at beginning of period (in shares) 4.9 5.2 5.3
Granted (in shares) 2.1 1.7 2.1
Awarded (in shares) (1.8) (1.1) (1.1)
Forfeited (in shares) (0.4) (0.9) (1.1)
Balance outstanding at end of period (in shares) 4.8 4.9 5.2