XML 280 R192.htm IDEA: XBRL DOCUMENT
v3.21.2

Interests in Joint Operations - Summary of Significant Interests in Joint Operations (Detail) | 12 Months Ended
--- | ---
Jun. 30, 2021 | Jun. 30, 2020
Atlantis [member] |  |
Disclosure of significant joint operations [line items] |  |
Country of operation | US |
Principal activity | Hydrocarbons production |
Group's interest | 44.00% | 44.00%
Bass Strait [member] |  |
Disclosure of significant joint operations [line items] |  |
Country of operation | Australia |
Principal activity | Hydrocarbons production |
Group's interest | 50.00% | 50.00%
Macedon [member] |  |
Disclosure of significant joint operations [line items] |  |
Country of operation | Australia |
Principal activity | Hydrocarbons production |
Group's interest | 71.43% | 71.43%
Mad Dog [member] |  |
Disclosure of significant joint operations [line items] |  |
Country of operation | US |
Principal activity | Hydrocarbons production |
Group's interest | 23.90% | 23.90%
North West Shelf [member] |  |
Disclosure of significant joint operations [line items] |  |
Country of operation | Australia |
Principal activity | Hydrocarbons production |
North West Shelf [member] | Bottom of range [member] |  |
Disclosure of significant joint operations [line items] |  |
Group's interest | 12.50% | 12.50%
North West Shelf [member] | Top of range [member] |  |
Disclosure of significant joint operations [line items] |  |
Group's interest | 16.67% | 16.67%
Pyrenees [member] |  |
Disclosure of significant joint operations [line items] |  |
Country of operation | Australia |
Principal activity | Hydrocarbons production |
Pyrenees [member] | Bottom of range [member] |  |
Disclosure of significant joint operations [line items] |  |
Group's interest | 40.00% | 40.00%
Pyrenees [member] | Top of range [member] |  |
Disclosure of significant joint operations [line items] |  |
Group's interest | 71.43% | 71.43%
ROD Integrated Development [member] |  |
Disclosure of significant joint operations [line items] |  |
Country of operation | Algeria |
Principal activity | Hydrocarbons production |
Group's interest | 28.85% | 29.50%
Shenzi [member] |  |
Disclosure of significant joint operations [line items] |  |
Country of operation | US |
Principal activity | Hydrocarbons production |
Group's interest | 72.00% | 44.00%
Trinidad/Tobago [member] |  |
Disclosure of significant joint operations [line items] |  |
Country of operation | Trinidad and Tobago |
Principal activity | Hydrocarbons production |
Trinidad/Tobago [member] | Bottom of range [member] |  |
Disclosure of significant joint operations [line items] |  |
Group's interest | 45.00% | 45.00%
Trinidad/Tobago [member] | Top of range [member] |  |
Disclosure of significant joint operations [line items] |  |
Group's interest | 68.46% | 68.46%
Mt Goldsworthy [member] |  |
Disclosure of significant joint operations [line items] |  |
Country of operation | Australia |
Principal activity | Iron ore mining |
Group's interest | 85.00% | 85.00%
Mt Newman [member] |  |
Disclosure of significant joint operations [line items] |  |
Country of operation | Australia |
Principal activity | Iron ore mining |
Group's interest | 85.00% | 85.00%
Yandi [member] |  |
Disclosure of significant joint operations [line items] |  |
Country of operation | Australia |
Principal activity | Iron ore mining |
Group's interest | 85.00% | 85.00%
Central Queensland Coal Associates [member] |  |
Disclosure of significant joint operations [line items] |  |
Country of operation | Australia |
Principal activity | Coal mining |
Group's interest | 50.00% | 50.00%

X
- Definition The description of the nature of the entity's operations and principal activities. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2020-01-01 -Paragraph 138 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_138_b&doctype=Standard -URIDate 2020-01-01 + Details
Name: | ifrs-full_DescriptionOfNatureOfEntitysOperationsAndPrincipalActivities
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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_DisclosureOfJointOperationsLineItems
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The principal place of business of a joint operation. [Refer: Joint operations [member]; Principal place of business] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 12 -IssueDate 2020-01-01 -Paragraph 21 -Subparagraph a -Clause iii -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2020-en-r&anchor=para_21_a_iii&doctype=Standard -URIDate 2020-01-01 + Details
Name: | ifrs-full_PrincipalPlaceOfBusinessOfJointOperation
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The proportion of ownership interest in a joint operation attributable to the entity. [Refer: Joint operations [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 12 -IssueDate 2020-01-01 -Paragraph 21 -Subparagraph a -Clause iv -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2020-en-r&anchor=para_21_a_iv&doctype=Standard -URIDate 2020-01-01 + Details
Name: | ifrs-full_ProportionOfOwnershipInterestInJointOperation
Namespace Prefix: | ifrs-full_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | ifrs-full_JointOperationsAxis=bhp_AtlantisMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_JointOperationsAxis=bhp_BassStraitMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_JointOperationsAxis=bhp_MacedonMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_JointOperationsAxis=bhp_MadDogMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_JointOperationsAxis=bhp_NorthWestShelfMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_RangeAxis=ifrs-full_BottomOfRangeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_RangeAxis=ifrs-full_TopOfRangeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_JointOperationsAxis=bhp_PyreneesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_JointOperationsAxis=bhp_RodIntegratedDevelopmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_JointOperationsAxis=bhp_ShenziMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_JointOperationsAxis=bhp_GreaterAngosturaAndRubyTrinidadAndTobagoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_JointOperationsAxis=bhp_MtGoldsworthyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_JointOperationsAxis=bhp_MtNewmanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_JointOperationsAxis=bhp_YandiMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_JointOperationsAxis=bhp_CentralQueenslandCoalAssociatesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |