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New and Amended Accounting Standards and Interpretations - Additional Information (Detail) - USD ($)
$ in Millions
12 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2016
Disclosure of expected impact of initial application of new standards or interpretations [line items]      
Revenue $ 43,638 $ 36,135 $ 28,567
Expenses 28,036 24,515 24,091
Profit 4,823 $ 6,222 $ (6,207)
Increase (decrease) due to application of IFRS 15 [member]      
Disclosure of expected impact of initial application of new standards or interpretations [line items]      
Revenue (509)    
Expenses (509)    
Profit