XML 257 R79.htm IDEA: XBRL DOCUMENT
v3.20.2

Segment Reporting - Summary of Reportable Segments (Detail) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Jun. 30, 2020 | Jun. 30, 2019 | Jun. 30, 2018
Disclosure of reportable segments [line items] |  |  |
Revenue | $ 42,931 | $ 44,288 | $ 43,129
Underlying EBITDA | 22,071 | 23,158 | 23,183
Depreciation and amortisation | (6,112) | (5,829) | (6,288)
Impairment losses | (85) | (264) | (333)
Underlying EBIT | 15,874 | 17,065 | 16,562
Exceptional items | (1,453) | (952) | (566)
Net finance costs | (911) | (1,064) | (1,245)
Profit before taxation | 13,510 | 15,049 | 14,751
Capital expenditure (cash basis) | 6,900 | 6,250 | 4,979
(Loss)/profit from equity accounted investments, related impairments and expenses | (512) | (546) | 147
Investments accounted for using the equity method | 2,585 | 2,569 | 2,473
Total assets | 104,783 | 100,861 | 111,993
Total liabilities | 52,537 | 49,037 | 51,323
Revenue [member] |  |  |
Disclosure of reportable segments [line items] |  |  |
Revenue | 42,931 | 44,288 | 43,129
Reportable segments [member] | Petroleum [member] |  |  |
Disclosure of reportable segments [line items] |  |  |
Revenue | 4,070 | 5,930 | 5,408
Underlying EBITDA | 2,207 | 4,061 | 3,393
Depreciation and amortisation | (1,445) | (1,560) | (1,719)
Impairment losses | (12) | (21) | (76)
Underlying EBIT | 750 | 2,480 | 1,598
Exceptional items | (6) |  |
Capital expenditure (cash basis) | 909 | 645 | 656
(Loss)/profit from equity accounted investments, related impairments and expenses | (4) | (2) | (4)
Investments accounted for using the equity method | 245 | 239 | 249
Total assets | 13,071 | 12,434 | 12,896
Total liabilities | 4,824 | 4,102 | 3,977
Reportable segments [member] | Petroleum [member] | Revenue [member] |  |  |
Disclosure of reportable segments [line items] |  |  |
Revenue | 4,008 | 5,853 | 5,333
Reportable segments [member] | Petroleum [member] | Inter-segment revenue [member] |  |  |
Disclosure of reportable segments [line items] |  |  |
Revenue | 62 | 77 | 75
Reportable segments [member] | Copper [member] |  |  |
Disclosure of reportable segments [line items] |  |  |
Revenue | 10,666 | 10,838 | 12,781
Underlying EBITDA | 4,347 | 4,550 | 6,522
Depreciation and amortisation | (1,740) | (1,835) | (1,920)
Impairment losses | (17) | (128) | (213)
Underlying EBIT | 2,590 | 2,587 | 4,389
Exceptional items | (1,228) |  |
Capital expenditure (cash basis) | 2,434 | 2,735 | 2,428
(Loss)/profit from equity accounted investments, related impairments and expenses | 67 | 303 | 467
Investments accounted for using the equity method | 1,558 | 1,472 | 1,335
Total assets | 27,942 | 27,428 | 26,824
Total liabilities | 3,535 | 3,340 | 3,145
Reportable segments [member] | Copper [member] | Revenue [member] |  |  |
Disclosure of reportable segments [line items] |  |  |
Revenue | 10,666 | 10,838 | 12,781
Reportable segments [member] | Iron Ore [member] |  |  |
Disclosure of reportable segments [line items] |  |  |
Revenue | 20,797 | 17,255 | 14,810
Underlying EBITDA | 14,554 | 11,129 | 8,930
Depreciation and amortisation | (1,608) | (1,653) | (1,721)
Impairment losses | (22) | (79) | (14)
Underlying EBIT | 12,924 | 9,397 | 7,195
Exceptional items | (614) | (971) | (539)
Capital expenditure (cash basis) | 2,328 | 1,611 | 1,074
(Loss)/profit from equity accounted investments, related impairments and expenses | (508) | (945) | (509)
Total assets | 23,841 | 22,592 | 22,208
Total liabilities | 5,441 | 5,106 | 3,888
Reportable segments [member] | Iron Ore [member] | Revenue [member] |  |  |
Disclosure of reportable segments [line items] |  |  |
Revenue | 20,797 | 17,251 | 14,797
Reportable segments [member] | Iron Ore [member] | Inter-segment revenue [member] |  |  |
Disclosure of reportable segments [line items] |  |  |
Revenue |  | 4 | 13
Reportable segments [member] | Coal [member] |  |  |
Disclosure of reportable segments [line items] |  |  |
Revenue | 6,242 | 9,121 | 8,889
Underlying EBITDA | 1,632 | 4,067 | 4,397
Depreciation and amortisation | (807) | (632) | (686)
Impairment losses | (14) | (35) | (29)
Underlying EBIT | 811 | 3,400 | 3,682
Exceptional items | (18) |  |
Capital expenditure (cash basis) | 603 | 655 | 409
(Loss)/profit from equity accounted investments, related impairments and expenses | (68) | 103 | 192
Investments accounted for using the equity method | 776 | 853 | 883
Total assets | 12,110 | 12,124 | 12,257
Total liabilities | 2,601 | 2,450 | 2,404
Reportable segments [member] | Coal [member] | Revenue [member] |  |  |
Disclosure of reportable segments [line items] |  |  |
Revenue | 6,241 | 9,121 | 8,889
Reportable 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 | 1,156 | 1,144 | 1,241
Underlying EBITDA | (669) | (649) | (59)
Depreciation and amortisation | (512) | (149) | (242)
Impairment losses | (20) | (1) | (1)
Underlying EBIT | (1,201) | (799) | (302)
Exceptional items | 413 | 19 | (27)
Capital expenditure (cash basis) | 626 | 604 | 412
(Loss)/profit from equity accounted investments, related impairments and expenses | 1 | (5) | 1
Investments accounted for using the equity method | 6 | 5 | 6
Total assets | 27,819 | 26,283 | 37,808
Total liabilities | 36,136 | 34,039 | 37,909
Group and unallocated items/eliminations [member] | Revenue [member] |  |  |
Disclosure of reportable segments [line items] |  |  |
Revenue | 1,219 | 1,225 | 1,329
Group and unallocated items/eliminations [member] | Inter-segment revenue [member] |  |  |
Disclosure of reportable segments [line items] |  |  |
Revenue | $ (63) | $ (81) | $ (88)

X
- Definition Depreciation and amortisation expense excluding exceptional items. + References No definition available. + Details
Name: | bhp_DepreciationAndAmortisationExpenseExcludingExceptionalItems
Namespace Prefix: | bhp_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Exceptional item gains (losses) before net finance costs and tax. + References No definition available. + Details
Name: | bhp_ExceptionalItemGainsLossesBeforeNetFinanceCostsAndTax
Namespace Prefix: | bhp_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount of impairment loss recognised in profit or loss excluding exceptional items. + References No definition available. + Details
Name: | bhp_ImpairmentLossRecognisedInProfitOrLossExcludingExceptionalItems
Namespace Prefix: | bhp_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The entity's share of profit (loss) from associates and joint ventures accounted for using the equity method and related impairments and expenses. + References No definition available. + Details
Name: | bhp_ShareOfProfitLossFromEquityAccountedInvestmentsRelatedImpairmentsAndExpenses
Namespace Prefix: | bhp_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Underlying EBIT is earnings before net finance costs, taxation expense, Discontinued operations and any exceptional items. Underlying EBIT includes BHP's share of profit/(loss) from investments accounted for using the equity method including net finance costs and taxation expense. + References No definition available. + Details
Name: | bhp_UnderlyingEarningsBeforeInterestTaxes
Namespace Prefix: | bhp_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Underlying EBITDA is earnings before net finance costs, depreciation, amortisation and impairments, taxation expense, Discontinued operations and any exceptional items. Underlying EBITDA includes BHP's share of profit/(loss) from investments accounted for using the equity method including net finance costs, depreciation, amortisation and impairments and taxation expense. + References No definition available. + Details
Name: | bhp_UnderlyingEarningsBeforeInterestTaxesDepreciationAndAmortization
Namespace Prefix: | bhp_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Expiry date 2020-01-01: The amount of resources: (a) controlled by the entity as a result of past events; and (b) from which future economic benefits are expected to flow to the entity. Effective 2020-01-01: The amount of a present economic resource controlled by the entity as a result of past events. Economic resource is a right that has the potential to produce economic benefits. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 13 -IssueDate 2019-01-01 -Paragraph 93 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=13&code=ifrs-tx-2019-en-r&anchor=para_93_a&doctype=Standard -URIDate 2019-03-27 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 8 -IssueDate 2019-01-01 -Paragraph 28 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2019-en-r&anchor=para_28_c&doctype=Standard -URIDate 2019-03-27 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 13 -IssueDate 2019-01-01 -Paragraph 93 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=13&code=ifrs-tx-2019-en-r&anchor=para_93_b&doctype=Standard -URIDate 2019-03-27 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 13 -IssueDate 2019-01-01 -Paragraph 93 -Subparagraph e -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=13&code=ifrs-tx-2019-en-r&anchor=para_93_e&doctype=Standard -URIDate 2019-03-27 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2019-01-01 -Paragraph 55 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2019-en-r&anchor=para_55&doctype=Standard -URIDate 2019-03-27 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 8 -IssueDate 2019-01-01 -Paragraph 23 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2019-en-r&anchor=para_23&doctype=Standard -URIDate 2019-03-27 + Details
Name: | ifrs-full_Assets
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table. + References No definition available. + Details
Name: | ifrs-full_DisclosureOfOperatingSegmentsLineItems
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of income or cost associated with interest and other financing activities of the entity. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2019-01-01 -Paragraph 85 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2019-en-r&anchor=para_85&doctype=Standard -URIDate 2019-03-27 + Details
Name: | ifrs-full_FinanceIncomeCost
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The amount of investments accounted for using the equity method. The equity method is a method of accounting whereby the investment is initially recognised at cost and adjusted thereafter for the post-acquisition change in the investor's share of net assets of the investee. The investor's profit or loss includes its share of the profit or loss of the investee. The investor's other comprehensive income includes its share of the other comprehensive income of the investee. [Refer: At cost [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 8 -IssueDate 2019-01-01 -Paragraph 24 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2019-en-r&anchor=para_24_a&doctype=Standard -URIDate 2019-03-27 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 12 -IssueDate 2019-01-01 -Paragraph B16 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2019-en-r&anchor=para_B16&doctype=Appendix&subtype=B -URIDate 2019-03-27 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2019-01-01 -Paragraph 54 -Subparagraph e -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2019-en-r&anchor=para_54_e&doctype=Standard -URIDate 2019-03-27 + Details
Name: | ifrs-full_InvestmentAccountedForUsingEquityMethod
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Expiry date 2020-01-01: The amount of present obligations of the entity arising from past events, the settlement of which is expected to result in an outflow from the entity of resources embodying economic benefits. Effective 2020-01-01: The amount of a present obligation of the entity to transfer an economic resource as a result of past events. Economic resource is a right that has the potential to produce economic benefits. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 13 -IssueDate 2019-01-01 -Paragraph 93 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=13&code=ifrs-tx-2019-en-r&anchor=para_93_a&doctype=Standard -URIDate 2019-03-27 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 13 -IssueDate 2019-01-01 -Paragraph 93 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=13&code=ifrs-tx-2019-en-r&anchor=para_93_b&doctype=Standard -URIDate 2019-03-27 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 13 -IssueDate 2019-01-01 -Paragraph 93 -Subparagraph e -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=13&code=ifrs-tx-2019-en-r&anchor=para_93_e&doctype=Standard -URIDate 2019-03-27 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 8 -IssueDate 2019-01-01 -Paragraph 28 -Subparagraph d -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2019-en-r&anchor=para_28_d&doctype=Standard -URIDate 2019-03-27 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 8 -IssueDate 2019-01-01 -Paragraph 23 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2019-en-r&anchor=para_23&doctype=Standard -URIDate 2019-03-27 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2019-01-01 -Paragraph 55 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2019-en-r&anchor=para_55&doctype=Standard -URIDate 2019-03-27 + Details
Name: | ifrs-full_Liabilities
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The profit (loss) before tax expense or income. [Refer: Profit (loss)] + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name IFRS -Number 8 -IssueDate 2019-01-01 -Paragraph 28 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2019-en-r&anchor=para_28_b&doctype=Standard -URIDate 2019-03-27 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Name IFRS -Number 8 -IssueDate 2019-01-01 -Paragraph 23 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2019-en-r&anchor=para_23&doctype=Standard -URIDate 2019-03-27 Reference 3: http://www.xbrl.org/2003/role/exampleRef -Name IAS -Number 1 -IssueDate 2019-01-01 -Paragraph 103 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2019-en-r&anchor=para_103&doctype=Standard -URIDate 2019-03-27 Reference 4: http://www.xbrl.org/2003/role/exampleRef -Name IAS -Number 1 -IssueDate 2019-01-01 -Paragraph 102 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2019-en-r&anchor=para_102&doctype=Standard -URIDate 2019-03-27 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 5 -IssueDate 2019-01-01 -Paragraph 33 -Subparagraph b -Clause i -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=5&code=ifrs-tx-2019-en-r&anchor=para_33_b_i&doctype=Standard -URIDate 2019-03-27 + Details
Name: | ifrs-full_ProfitLossBeforeTax
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The cash outflow for the purchases of property, plant and equipment, classified as investing activities. [Refer: Property, plant and equipment] + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name IAS -Number 7 -IssueDate 2019-01-01 -Paragraph 16 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=7&code=ifrs-tx-2019-en-r&anchor=para_16_a&doctype=Standard -URIDate 2019-03-27 + Details
Name: | ifrs-full_PurchaseOfPropertyPlantAndEquipmentClassifiedAsInvestingActivities
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Expiry date 2020-01-01: The income arising in the course of an entity's ordinary activities. Income is increases in economic benefits during the accounting period in the form of inflows or enhancements of assets or decreases of liabilities that result in an increase in equity, other than those relating to contributions from equity participants. Effective 2020-01-01: The income arising in the course of an entity's ordinary activities. Income is increases in assets, or decreases in liabilities, that result in increases in equity, other than those relating to contributions from holders of equity claims. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 8 -IssueDate 2019-01-01 -Paragraph 28 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2019-en-r&anchor=para_28_a&doctype=Standard -URIDate 2019-03-27 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 8 -IssueDate 2019-01-01 -Paragraph 23 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2019-en-r&anchor=para_23_a&doctype=Standard -URIDate 2019-03-27 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 8 -IssueDate 2019-01-01 -Paragraph 32 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2019-en-r&anchor=para_32&doctype=Standard -URIDate 2019-03-27 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 8 -IssueDate 2019-01-01 -Paragraph 33 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2019-en-r&anchor=para_33_a&doctype=Standard -URIDate 2019-03-27 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 8 -IssueDate 2019-01-01 -Paragraph 34 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2019-en-r&anchor=para_34&doctype=Standard -URIDate 2019-03-27 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2019-01-01 -Paragraph 82 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2019-en-r&anchor=para_82_a&doctype=Standard -URIDate 2019-03-27 Reference 7: http://www.xbrl.org/2003/role/exampleRef -Name IAS -Number 1 -IssueDate 2019-01-01 -Paragraph 103 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2019-en-r&anchor=para_103&doctype=Standard -URIDate 2019-03-27 Reference 8: http://www.xbrl.org/2003/role/exampleRef -Name IAS -Number 1 -IssueDate 2019-01-01 -Paragraph 102 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2019-en-r&anchor=para_102&doctype=Standard -URIDate 2019-03-27 Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 5 -IssueDate 2019-01-01 -Paragraph 33 -Subparagraph b -Clause i -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=5&code=ifrs-tx-2019-en-r&anchor=para_33_b_i&doctype=Standard -URIDate 2019-03-27 Reference 10: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 12 -IssueDate 2019-01-01 -Paragraph B12 -Subparagraph b -Clause v -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2019-en-r&anchor=para_B12_b_v&doctype=Appendix&subtype=B -URIDate 2019-03-27 Reference 11: http://www.xbrl.org/2003/role/exampleRef -Name IFRS -Number 12 -IssueDate 2019-01-01 -Paragraph B10 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2019-en-r&anchor=para_B10_b&doctype=Appendix&subtype=B -URIDate 2019-03-27 + Details
Name: | ifrs-full_Revenue
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | ifrs-full_TypesOfCustomersAxis=bhp_ExternalCustomersMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_SegmentConsolidationItemsAxis=ifrs-full_ReportableSegmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_SegmentsAxis=bhp_PetroleumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_TypesOfCustomersAxis=bhp_IntersegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_SegmentsAxis=bhp_CopperMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_SegmentsAxis=bhp_IronOreMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_SegmentsAxis=bhp_CoalMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_SegmentConsolidationItemsAxis=ifrs-full_MaterialReconcilingItemsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |