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Trade and Other Receivables - Additional Information (Detail)
$ in Millions
 12 Months Ended
Jun. 30, 2021
USD ($)
Customer
Jun. 30, 2020
USD ($)
Disclosure of financial assets [line items]    
Term receivables terms 30 days  
Trade receivables $ 4,450 $ 1,974
Trade receivables [member]    
Disclosure of financial assets [line items]    
Provisions for doubtful debts 3 2
Past due but not impaired [member]    
Disclosure of financial assets [line items]    
Trade receivables $ 68 $ 23
Credit risk [member]    
Disclosure of financial assets [line items]    
Percentage of trade receivables owed from the customers 31.00% 32.00%
Number of customers sample risk exposure | Customer 10