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Segment Reporting - Summary of Geographical Information (Detail) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Jun. 30, 2019 | Jun. 30, 2018 | Jun. 30, 2017
Disclosure of geographical areas [line items] |  |  |
Revenue | $ 44,288 | $ 43,129 | $ 35,740
Non-current assets | 77,488 | 76,863 | 95,950
Unallocated assets [member] |  |  |
Disclosure of geographical areas [line items] |  |  |
Non-current assets | 5,067 | 5,039 | 7,069
Australia [member] |  |  |
Disclosure of geographical areas [line items] |  |  |
Revenue | 2,568 | 2,304 | 2,037
Non-current assets | 45,013 | 45,157 | 46,949
Europe [member] |  |  |
Disclosure of geographical areas [line items] |  |  |
Revenue | 1,875 | 1,886 | 1,641
China [member] |  |  |
Disclosure of geographical areas [line items] |  |  |
Revenue | 24,274 | 22,660 | 18,644
Japan [member] |  |  |
Disclosure of geographical areas [line items] |  |  |
Revenue | 4,193 | 4,628 | 3,036
India [member] |  |  |
Disclosure of geographical areas [line items] |  |  |
Revenue | 2,479 | 2,439 | 1,891
South Korea [member] |  |  |
Disclosure of geographical areas [line items] |  |  |
Revenue | 2,550 | 2,588 | 2,271
Rest of Asia [member] |  |  |
Disclosure of geographical areas [line items] |  |  |
Revenue | 2,940 | 2,620 | 3,152
North America [member] |  |  |
Disclosure of geographical areas [line items] |  |  |
Revenue | 2,442 | 2,715 | 2,233
Non-current assets | 8,633 | 8,246 | 22,860
South America [member] |  |  |
Disclosure of geographical areas [line items] |  |  |
Revenue | 662 | 1,054 | 649
Non-current assets | 18,404 | 18,267 | 18,899
Rest of world [member] |  |  |
Disclosure of geographical areas [line items] |  |  |
Revenue | 305 | 235 | 186
Non-current assets | $ 371 | $ 154 | $ 173

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