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Other Equity - Summary of Financial Information Relating to Subsidiaries with Non-controlling Interests (Detail) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Jun. 30, 2019 | Jun. 30, 2018 | Jun. 30, 2017
Disclosure of significant subsidiaries [line items] |  |  |
Current assets | $ 23,373 | $ 35,130 |
Non-current assets | 77,488 | 76,863 | $ 95,950
Current liabilities | (12,339) | (13,989) |
Non-current liabilities | (36,698) | (37,334) |
Net assets | 51,824 | 60,670 |
Net assets attributable to NCI | 4,584 | 5,078 |
Revenue | 44,288 | 43,129 | 35,740
Profit after taxation | 9,185 | 4,823 | 6,222
Other comprehensive income | (25) | (97) | (49)
Total comprehensive income | 9,160 | 4,726 | 6,173
Profit after taxation attributable to NCI | 879 | 1,118 | 332
Net operating cash flow | 17,871 | 18,461 | 16,804
Net investing cash flow | 2,607 | (5,921) | (4,161)
Net financing cash flow | $ (20,528) | $ (10,891) | $ (9,133)
Minera Escondida Limitada [member] |  |  |
Disclosure of significant subsidiaries [line items] |  |  |
Group share (per cent) | 57.50% | 57.50% |
Current assets | $ 2,456 | $ 2,751 |
Non-current assets | 12,538 | 13,389 |
Current liabilities | (1,826) | (1,781) |
Non-current liabilities | (4,122) | (4,352) |
Net assets | 9,046 | 10,007 |
Net assets attributable to NCI | 3,845 | 4,253 |
Revenue | 6,876 | 8,775 |
Profit after taxation | 1,360 | 2,221 |
Other comprehensive income | (1) | (2) |
Total comprehensive income | 1,359 | 2,219 |
Profit after taxation attributable to NCI | 578 | 944 |
Other comprehensive income attributable to NCI |  | (1) |
Net operating cash flow | 3,283 | 5,041 |
Net investing cash flow | (1,034) | (997) |
Net financing cash flow | (2,517) | (3,392) |
Dividends paid to NCI | 986 | 1,469 |
Other individually immaterial subsidiaries [member] |  |  |
Disclosure of significant subsidiaries [line items] |  |  |
Net assets attributable to NCI | 739 | 825 |
Profit after taxation attributable to NCI | 301 | 174 |
Other comprehensive income attributable to NCI | (1) | 1 |
Dividends paid to NCI | 219 | 135 |
Subsidiaries with material non-controlling interests [member] |  |  |
Disclosure of significant subsidiaries [line items] |  |  |
Net assets attributable to NCI | 4,584 | 5,078 |
Profit after taxation attributable to NCI | 879 | 1,118 |
Other comprehensive income attributable to NCI | (1) |  |
Dividends paid to NCI | $ 1,205 | $ 1,604 |

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