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Net Debt - Summary of Cash and Cash Equivalents, Net of Overdrafts (Detail) - USD ($)
$ in Millions
Jun. 30, 2023
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2020
Cash and cash equivalents if different from statement of financial position [abstract]        
Total cash and cash equivalents $ 12,428 $ 17,236 $ 15,246  
Bank overdrafts and short-term borrowings (5)      
Total cash and cash equivalents, net of overdrafts $ 12,423 $ 17,236 $ 15,246 $ 13,426