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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, 2020 | Jun. 30, 2019 | Jun. 30, 2018
Disclosure of significant subsidiaries [line items] |  |  |
Current assets | $ 21,471 | $ 23,373 |
Non-current assets | 83,312 | 77,488 | $ 76,863
Current liabilities | (14,824) | (12,339) |
Non-current liabilities | (37,713) | (36,698) |
Net assets | 52,246 | 51,824 |
Net assets attributable to NCI | 4,310 | 4,584 |
Revenue | 42,931 | 44,288 | 43,129
Profit after taxation | 8,736 | 9,185 | 4,823
Other comprehensive income | (69) | (25) | (97)
Total comprehensive income | 8,667 | 9,160 | 4,726
Profit after taxation attributable to NCI | 780 | 879 | 1,118
Net operating cash flow | 15,706 | 17,871 | 18,461
Net investing cash flow | (7,616) | 2,607 | (5,921)
Net financing cash flow | $ (9,752) | $ (20,528) | $ (10,891)
Minera Escondida Limitada [member] |  |  |
Disclosure of significant subsidiaries [line items] |  |  |
Group share (per cent) | 57.50% | 57.50% |
Current assets | $ 2,432 | $ 2,456 |
Non-current assets | 12,121 | 12,538 |
Current liabilities | (1,614) | (1,826) |
Non-current liabilities | (4,613) | (4,122) |
Net assets | 8,326 | 9,046 |
Net assets attributable to NCI | 3,539 | 3,845 |
Revenue | 6,719 | 6,876 |
Profit after taxation | 1,088 | 1,360 |
Other comprehensive income | (27) | (1) |
Total comprehensive income | 1,061 | 1,359 |
Profit after taxation attributable to NCI | 462 | 578 |
Other comprehensive income attributable to NCI | (11) |  |
Net operating cash flow | 2,637 | 3,283 |
Net investing cash flow | (919) | (1,034) |
Net financing cash flow | (1,920) | (2,517) |
Dividends paid to NCI | 757 | 986 |
Other individually immaterial subsidiaries [member] |  |  |
Disclosure of significant subsidiaries [line items] |  |  |
Net assets attributable to NCI | 771 | 739 |
Profit after taxation attributable to NCI | 318 | 301 |
Other comprehensive income attributable to NCI |  | (1) |
Dividends paid to NCI | 286 | 219 |
Subsidiaries with material non-controlling interests [member] |  |  |
Disclosure of significant subsidiaries [line items] |  |  |
Net assets attributable to NCI | 4,310 | 4,584 |
Profit after taxation attributable to NCI | 780 | 879 |
Other comprehensive income attributable to NCI | (11) | (1) |
Dividends paid to NCI | $ 1,043 | $ 1,205 |

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