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Climate change (Tables)
 12 Months Ended
Jun. 30, 2023
Text block [abstract]  
Summary of Climate change in asset valuations reflects As at the date of these Financial Statements, the carbon price used in asset valuations reflects the following ranges:
 

US$ real (January 2022) per tCO2
  
FY2030

Low
 
  
FY2030

High
 
  
FY2050

Low
 
  
FY2050

High
 
Australia
      25        75        150        225  
Brazil
      5        50        125        200  
Chile
      8        41        150        225  
Canada
      65        102        200        225  
Key customer countries
      –        175        25        250  
Summary of Climate change in impairment of non-current assets These cash flow estimates form the basis of the Group’s impairment assessments as outlined in further detail in note 13 ‘Impairment of non-current assets’.
 

Asset
  
%
 
WAIO
  
 
40
 
Escondida
  
 
31
 
BMA
  
 
12
 
Pampa Norte and Potash
  
 
11
 
Olympic Dam and Nickel West
  
 
6
 
 
Summary of Climate change in price-only sensitivities reflect
Price-only sensitivities reflect the following price outlooks published in August 2022 by Wood Mackenzie, a research and consultancy business for the global energy, power and renewables, subsurface, chemicals, and metals and mining industries:
 

Price source
  
CY2030 Price

(real, US$/tonne)
 
  
CY2050 Price

(real, US$/tonne)
 
Base case
      159        170  
1.5°C scenario
     127        135