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Financial Risk Management - Summary of Foreign Currency Risk Arising From Financial Assets and Liabilities, Which Are Denominated In Currencies Other Than The US Dollar (Detail) - Currency risk [member] - USD ($)
$ in Millions
Jun. 30, 2022
Jun. 30, 2021
Disclosure of Detailed Information about Foreign Currency Risk Arising from Financial Assets and Liabilities which are Denominated in Currencies other than the US Dollar Explanatory [Line Items]    
Net Financial Assets Liabilities $ (3,396) $ (4,041)
AUD    
Disclosure of Detailed Information about Foreign Currency Risk Arising from Financial Assets and Liabilities which are Denominated in Currencies other than the US Dollar Explanatory [Line Items]    
Net Financial Assets Liabilities (3,649) (4,421)
CLP    
Disclosure of Detailed Information about Foreign Currency Risk Arising from Financial Assets and Liabilities which are Denominated in Currencies other than the US Dollar Explanatory [Line Items]    
Net Financial Assets Liabilities (602) (649)
GBP    
Disclosure of Detailed Information about Foreign Currency Risk Arising from Financial Assets and Liabilities which are Denominated in Currencies other than the US Dollar Explanatory [Line Items]    
Net Financial Assets Liabilities 388 535
EUR    
Disclosure of Detailed Information about Foreign Currency Risk Arising from Financial Assets and Liabilities which are Denominated in Currencies other than the US Dollar Explanatory [Line Items]    
Net Financial Assets Liabilities 280 366
Other    
Disclosure of Detailed Information about Foreign Currency Risk Arising from Financial Assets and Liabilities which are Denominated in Currencies other than the US Dollar Explanatory [Line Items]    
Net Financial Assets Liabilities $ 187 $ 128