v3.26.3
Impairment of Non-Financial Assets (Details) - USD ($)
$ in Thousands
 12 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2024
Reversal of impairment/(impairment and write down) of non-financial assets [Abstract]      
Reversal of impairment/(impairment and write down) of non-financial assets [1],[2] $ 156,013 $ (175,612) [3] $ (11,189) [3]
Capital Works in Progress [Member]      
Reversal of impairment/(impairment and write down) of non-financial assets [Abstract]      
Reversal of impairment/(impairment and write down) of non-financial assets 3,621 (8,669) (3,272)
Exploration and Evaluation [Member]      
Reversal of impairment/(impairment and write down) of non-financial assets [Abstract]      
Reversal of impairment/(impairment and write down) of non-financial assets 0 0 (7,917)
Land and Buildings [Member]      
Reversal of impairment/(impairment and write down) of non-financial assets [Abstract]      
Reversal of impairment/(impairment and write down) of non-financial assets 16,842 (16,367) 0
Mine Properties [Member]      
Reversal of impairment/(impairment and write down) of non-financial assets [Abstract]      
Reversal of impairment/(impairment and write down) of non-financial assets 36,885 (43,895) 0
Plant and Equipment [Member]      
Reversal of impairment/(impairment and write down) of non-financial assets [Abstract]      
Reversal of impairment/(impairment and write down) of non-financial assets 98,665 $ (106,681) $ 0
Right-of-Use Assets [member]      
Reversal of impairment/(impairment and write down) of non-financial assets [Abstract]      
Impairment of non-financial assets $ 400    
[1] The impairment reversal of $156.0 million for the year ended 30 June 2026 relates to North American Lithium and includes an allocation of $0.4 million to right-of-use assets.
[2] Adjustment to profit/(loss) which is reported as part of ‘North American Lithium’ (2026: profit of $156.0 million; 2025: $175.6 million; 2024: $3.8 million), ‘All other operations’ (2026 and 2025: Nil; 2024: $4.1 million) and ‘Group / unallocated items and eliminations’ (2026 and 2025: Nil; 2024: $3.3 million). Refer to Note 14 for further details.
[3] Refer to Note 2 (a) for details on translation of prior period comparatives to United States dollars to conform with changes in presentation currency.