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Segment Reporting - Summary of Geographical Information (Detail) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Jun. 30, 2018 | Jun. 30, 2017 | Jun. 30, 2016
Disclosure of geographical areas [Line Items] |  |  |
Revenue | $ 43,638 | $ 36,135 | $ 28,567
Non-current assets | 76,863 | 95,950 | 101,239
Unallocated assets [member] |  |  |
Disclosure of geographical areas [Line Items] |  |  |
Non-current assets | 5,039 | 7,069 | 8,828
Australia [member] |  |  |
Disclosure of geographical areas [Line Items] |  |  |
Revenue | 2,304 | 2,037 | 1,846
Non-current assets | 45,157 | 46,949 | 49,465
Europe [member] |  |  |
Disclosure of geographical areas [Line Items] |  |  |
Revenue | 1,886 | 1,641 | 1,141
China [member] |  |  |
Disclosure of geographical areas [Line Items] |  |  |
Revenue | 22,935 | 18,875 | 13,177
Japan [member] |  |  |
Disclosure of geographical areas [Line Items] |  |  |
Revenue | 4,709 | 3,086 | 2,941
India [member] |  |  |
Disclosure of geographical areas [Line Items] |  |  |
Revenue | 2,484 | 1,938 | 1,478
South Korea [member] |  |  |
Disclosure of geographical areas [Line Items] |  |  |
Revenue | 2,639 | 2,296 | 1,919
Rest of Asia [member] |  |  |
Disclosure of geographical areas [Line Items] |  |  |
Revenue | 2,620 | 3,157 | 2,623
North America [member] |  |  |
Disclosure of geographical areas [Line Items] |  |  |
Revenue | 2,715 | 2,233 | 2,355
Non-current assets | 8,246 | 22,860 | 23,943
South America [member] |  |  |
Disclosure of geographical areas [Line Items] |  |  |
Revenue | 1,106 | 681 | 899
Non-current assets | 18,267 | 18,899 | 18,614
Rest of world [member] |  |  |
Disclosure of geographical areas [Line Items] |  |  |
Revenue | 240 | 191 | 188
Non-current assets | $ 154 | $ 173 | $ 389

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