v3.25.3
Impairment of Non-Financial Assets (Details) - AUD ($)
$ in Thousands
 12 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2023
Impairment of non-financial asset [Abstract]      
Impairment and write-down of non-financial assets [1] $ 271,310 $ 17,066 [2] $ 0 [2]
Australian Operations [Member]      
Impairment of non-financial asset [Abstract]      
Impairment and write-down of non-financial assets   5,900  
Corporate [Member]      
Impairment of non-financial asset [Abstract]      
Impairment and write-down of non-financial assets   5,100  
Vallee lithium project [Member]      
Impairment of non-financial asset [Abstract]      
Impairment and write-down of non-financial assets   4,000  
Other Individually Immaterial Projects [Member]      
Impairment of non-financial asset [Abstract]      
Impairment and write-down of non-financial assets   2,100  
Capital Works in Progress [Member]      
Impairment of non-financial asset [Abstract]      
Impairment of non-financial assets 13,393 0 0
Write-down of non-financial assets 0 4,991 0
Exploration and Evaluation [Member]      
Impairment of non-financial asset [Abstract]      
Impairment of non-financial assets 0 7,266 0
Write-down of non-financial assets 0 4,809 0
Land and Buildings [Member]      
Impairment of non-financial asset [Abstract]      
Impairment of non-financial assets 25,287 0 0
Mine Properties [Member]      
Impairment of non-financial asset [Abstract]      
Impairment of non-financial assets 67,815 0 0
Plant and Equipment [Member]      
Impairment of non-financial asset [Abstract]      
Impairment of non-financial assets [3] 164,815 $ 0 $ 0
Right-of-Use Assets [member]      
Impairment of non-financial asset [Abstract]      
Impairment of non-financial assets $ 900    
[1] The total impairment and write down of $271.3 million for the year ended 30 June 2025 relates to North American Lithium. The total impairment and write down of $17.1 million for the year ended 30 June 2024 relates to the Australian operations ($5.9 million), Corporate ($5.1 million), Vallée Lithium Project ($4.0 million), and various other individually immaterial projects ($2.1 million).
[2] Refer to Note 32 for details on restatement of prior period comparatives.
[3] The impairment of $164.8 million for the year ended 30 June 2025 includes an allocation of $0.9 million to right-of-use assets.