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Discontinued Operations - Summary of Cash Flows from Discontinued Operations (Parenthetical) (Detail) - USD ($) $ in Millions | 12 Months Ended
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Jun. 30, 2020 | Jun. 30, 2019 | Jun. 30, 2018
Disclosure of analysis of single amount of discontinued operations [line items] |  |  |
Purchases of property, plant and equipment | $ 6,900 | $ 6,250 | $ 4,979
Proceeds from sale of assets | 265 | 145 | 89
Net repayment of interest bearing liabilities | 2,047 | 2,604 | 4,188
Dividends paid to non-controlling interests | $ 1,043 | 1,198 | 1,582
Discontinued operations [member] |  |  |
Disclosure of analysis of single amount of discontinued operations [line items] |  |  |
Purchases of property, plant and equipment |  | 443 | 900
Proceeds from sale of assets |  | 0 | 39
Net repayment of interest bearing liabilities |  | 6 | 4
Distribution (contribution) to non-controlling interests |  | 0 | 14
Dividends paid to non-controlling interests |  | $ 7 | $ 22

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