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Contingent liabilities (Tables)
 12 Months Ended
Jun. 30, 2019
Text block [abstract]  
Summary of Contingent Liabilities
     2019      2018  
     US$M      US$M  

Associates and joint ventures (1)

      1,822        1,588  

Subsidiaries and joint operations (1)

      1,621        1,915  
  

 

 

     

 

 

  

Total

      3,443        3,503  
  

 

 

     

 

 

  

 

(1) 

There are a number of matters, for which it is not possible at this time to provide a range of possible outcomes or a reliable estimate of potential future exposures, and for which no amounts have been included in the table above.