v3.26.3
Share-Based Payments - Model Inputs for STI Performance Rights Granted (Parenthetical) (Detail)
12 Months Ended
Jun. 30, 2026
shares
Jun. 30, 2025
shares
Jun. 30, 2024
shares
Disclosure of other equity instruments [line items]      
Granted during the fiscal year Number 0 0  
Short term incentives performance rights [member]      
Disclosure of other equity instruments [line items]      
Granted during the fiscal year Number     0
Equity incentive plan [member]      
Disclosure of other equity instruments [line items]      
Outstanding options     0
Granted during the fiscal year Number 0 0  
Equity incentive plan [member] | Short term incentives performance rights [member] | Vesting Period One [Member]      
Disclosure of other equity instruments [line items]      
Number of other equity instruments due to vest in share based payment arrangement     3,147,952
Equity incentive plan [member] | Short term incentives performance rights [member] | Vesting Period Two [Member]      
Disclosure of other equity instruments [line items]      
Number of other equity instruments due to vest in share based payment arrangement     3,147,952
Equity incentive plan [member] | Short term incentives performance rights [member] | Vesting Period Three [Member]      
Disclosure of other equity instruments [line items]      
Number of other equity instruments due to vest in share based payment arrangement     447,952