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Segment Reporting - Summary of Reportable Segments (Detail) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Jun. 30, 2021 | Jun. 30, 2020 | Jun. 30, 2019
Disclosure of reportable segments [line items] |  |  |
Revenue | $ 60,817 | $ 42,931 | $ 44,288
Underlying EBITDA | 37,379 | 22,071 | 23,158
Depreciation and amortisation | (6,824) | (6,112) | (5,829)
Impairment losses | (264) | (85) | (264)
Underlying EBIT | 30,291 | 15,874 | 17,065
Exceptional items | (4,385) | (1,453) | (952)
Net finance costs | (1,305) | (911) | (1,064)
Profit before taxation | 24,601 | 13,510 | 15,049
Capital expenditure (cash basis) | 6,606 | 6,900 | 6,250
(Loss)/profit from equity accounted investments, related impairments and expenses | (921) | (512) | (546)
Investments accounted for using the equity method | 1,742 | 2,585 | 2,569
Total assets | 108,927 | 105,733 | 101,811
Total liabilities | 53,322 | 53,558 | 50,058
Revenue [member] |  |  |
Disclosure of reportable segments [line items] |  |  |
Revenue | 60,817 | 42,931 | 44,288
Operating segments [member] | Petroleum [member] |  |  |
Disclosure of reportable segments [line items] |  |  |
Revenue | 3,946 | 4,070 | 5,930
Underlying EBITDA | 2,300 | 2,207 | 4,061
Depreciation and amortisation | (1,739) | (1,445) | (1,560)
Impairment losses | (128) | (12) | (21)
Underlying EBIT | 433 | 750 | 2,480
Exceptional items | (47) | (6) |
Capital expenditure (cash basis) | 994 | 909 | 645
(Loss)/profit from equity accounted investments, related impairments and expenses | (6) | (4) | (2)
Investments accounted for using the equity method | 253 | 245 | 239
Total assets | 13,775 | 13,071 | 12,434
Total liabilities | 5,811 | 4,824 | 4,102
Operating segments [member] | Petroleum [member] | Revenue [member] |  |  |
Disclosure of reportable segments [line items] |  |  |
Revenue | 3,895 | 4,008 | 5,853
Operating segments [member] | Petroleum [member] | Inter-segment revenue [member] |  |  |
Disclosure of reportable segments [line items] |  |  |
Revenue | 51 | 62 | 77
Operating segments [member] | Copper [member] |  |  |
Disclosure of reportable segments [line items] |  |  |
Revenue | 15,726 | 10,666 | 10,838
Underlying EBITDA | 8,489 | 4,347 | 4,550
Depreciation and amortisation | (1,608) | (1,740) | (1,835)
Impairment losses | (72) | (17) | (128)
Underlying EBIT | 6,809 | 2,590 | 2,587
Exceptional items | (144) | (1,228) |
Capital expenditure (cash basis) | 2,180 | 2,434 | 2,735
(Loss)/profit from equity accounted investments, related impairments and expenses | 692 | 67 | 303
Investments accounted for using the equity method | 1,482 | 1,558 | 1,472
Total assets | 31,517 | 28,892 | 28,378
Total liabilities | 4,589 | 3,535 | 3,340
Operating segments [member] | Copper [member] | Revenue [member] |  |  |
Disclosure of reportable segments [line items] |  |  |
Revenue | 15,726 | 10,666 | 10,838
Operating segments [member] | Iron Ore [member] |  |  |
Disclosure of reportable segments [line items] |  |  |
Revenue | 34,475 | 20,797 | 17,255
Underlying EBITDA | 26,278 | 14,554 | 11,129
Depreciation and amortisation | (1,971) | (1,608) | (1,653)
Impairment losses | (13) | (22) | (79)
Underlying EBIT | 24,294 | 12,924 | 9,397
Exceptional items | (1,319) | (614) | (971)
Capital expenditure (cash basis) | 2,188 | 2,328 | 1,611
(Loss)/profit from equity accounted investments, related impairments and expenses | (1,126) | (508) | (945)
Total assets | 26,171 | 23,841 | 22,592
Total liabilities | 7,508 | 5,441 | 5,106
Operating segments [member] | Iron Ore [member] | Revenue [member] |  |  |
Disclosure of reportable segments [line items] |  |  |
Revenue | 34,475 | 20,797 | 17,251
Operating segments [member] | Iron Ore [member] | Inter-segment revenue [member] |  |  |
Disclosure of reportable segments [line items] |  |  |
Revenue |  |  | 4
Operating segments [member] | Coal [member] |  |  |
Disclosure of reportable segments [line items] |  |  |
Revenue | 5,154 | 6,242 | 9,121
Underlying EBITDA | 288 | 1,632 | 4,067
Depreciation and amortisation | (845) | (807) | (632)
Impairment losses | (20) | (14) | (35)
Underlying EBIT | (577) | 811 | 3,400
Exceptional items | (1,567) | (18) |
Capital expenditure (cash basis) | 579 | 603 | 655
(Loss)/profit from equity accounted investments, related impairments and expenses | (480) | (68) | 103
Investments accounted for using the equity method |  | 776 | 853
Total assets | 11,030 | 12,110 | 12,124
Total liabilities | 3,518 | 2,601 | 2,450
Operating segments [member] | Coal [member] | Revenue [member] |  |  |
Disclosure of reportable segments [line items] |  |  |
Revenue | 5,154 | 6,241 | 9,121
Operating segments [member] | Coal [member] | Inter-segment revenue [member] |  |  |
Disclosure of reportable segments [line items] |  |  |
Revenue |  | 1 |
Group and unallocated items/eliminations [member] |  |  |
Disclosure of reportable segments [line items] |  |  |
Revenue | 1,516 | 1,156 | 1,144
Underlying EBITDA | 24 | (669) | (649)
Depreciation and amortisation | (661) | (512) | (149)
Impairment losses | (31) | (20) | (1)
Underlying EBIT | (668) | (1,201) | (799)
Exceptional items | (1,308) | 413 | 19
Capital expenditure (cash basis) | 665 | 626 | 604
(Loss)/profit from equity accounted investments, related impairments and expenses | (1) | 1 | (5)
Investments accounted for using the equity method | 7 | 6 | 5
Total assets | 26,434 | 27,819 | 26,283
Total liabilities | 31,896 | 37,157 | 35,060
Group and unallocated items/eliminations [member] | Revenue [member] |  |  |
Disclosure of reportable segments [line items] |  |  |
Revenue | 1,567 | 1,219 | 1,225
Group and unallocated items/eliminations [member] | Inter-segment revenue [member] |  |  |
Disclosure of reportable segments [line items] |  |  |
Revenue | $ (51) | $ (63) | $ (81)

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