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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, 2019 | Jun. 30, 2018 | Jun. 30, 2017
Disclosure of analysis of single amount of discontinued operations [line items] |  |  |
Purchases of property, plant and equipment | $ 6,250 | $ 4,979 | $ 3,697
Proceeds from sale of assets | 145 | 89 | 529
Net repayment of interest bearing liabilities | 2,604 | 4,188 | 7,114
Dividends paid to non-controlling interests | 1,198 | 1,582 | 575
Discontinued operations [member] |  |  |
Disclosure of analysis of single amount of discontinued operations [line items] |  |  |
Purchases of property, plant and equipment | 443 | 900 | 555
Proceeds from sale of assets | 0 | 39 | 118
Net repayment of interest bearing liabilities | 6 | 4 | 6
Distribution (contribution) to non-controlling interests | 0 | 14 | 16
Dividends paid to non-controlling interests | $ 7 | $ 22 | $ 6

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