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Interests in Joint Operations - Summary of Assets Held in Joint Operations (Detail) - USD ($) $ in Millions | Jun. 30, 2020 | Jun. 30, 2019 | Jun. 30, 2018
--- | --- | --- | ---
Disclosure of significant joint operations [line items] |  |  |
Current assets | $ 21,471 | $ 23,373 |
Non-current assets | 83,312 | 77,488 | $ 76,863
Total assets | 104,783 | 100,861 | $ 111,993
Joint operations [member] |  |  |
Disclosure of significant joint operations [line items] |  |  |
Current assets | 2,059 | 1,946 |
Non-current assets | 37,193 | 35,682 |
Total assets | $ 39,252 | $ 37,628 |

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