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Net Debt - Additional Information (Detail) - USD ($)
$ in Millions
12 Months Ended
Jun. 30, 2024
Jun. 30, 2023
Disclosure of net debt [line items]    
Cash and cash equivalents restricted by legal or contractual arrangements $ 112 $ 95
Defaults on loans payable 0  
Revolving credit facility [member]    
Disclosure of net debt [line items]    
Revolving credit facility, maximum amount 5,500  
Commercial paper, amount drawn $ 0
Revolving credit facility, maturity period 10 October 2026