XML 151 R174.htm IDEA: XBRL DOCUMENT
v3.20.2

Discontinued Operations - Summary of Exceptional Items - Discontinued Operations (Detail) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Jun. 30, 2020 | Jun. 30, 2019 | Jun. 30, 2018
Disclosure of analysis of single amount of discontinued operations [line items] |  |  |
Exceptional items gross | $ (1,546) | $ (1,060) | $ (650)
Exceptional items tax | 241 | 242 | (2,320)
Exceptional items net | (1,305) | (818) | (2,970)
US tax reform [member] |  |  |
Disclosure of analysis of single amount of discontinued operations [line items] |  |  |
Exceptional items tax |  |  | (2,320)
Exceptional items net |  |  | (2,320)
Non-controlling interests [member] |  |  |
Disclosure of analysis of single amount of discontinued operations [line items] |  |  |
Exceptional items gross | (291) |  |
Exceptional items tax | 90 |  |
Exceptional items net | (201) |  |
Attributable to BHP shareholders [member] |  |  |
Disclosure of analysis of single amount of discontinued operations [line items] |  |  |
Exceptional items gross | (1,255) | (1,060) | (650)
Exceptional items tax | 151 | 242 | (2,320)
Exceptional items net | $ (1,104) | (818) | (2,970)
Discontinued operations [member] |  |  |
Disclosure of analysis of single amount of discontinued operations [line items] |  |  |
Exceptional items gross |  |  | (2,859)
Exceptional items tax |  |  | 601
Exceptional items net |  | $ 0 | (2,258)
Discontinued operations [member] | US tax reform [member] |  |  |
Disclosure of analysis of single amount of discontinued operations [line items] |  |  |
Exceptional items gross |  |  |
Exceptional items tax |  |  | 492
Exceptional items net |  |  | 492
Discontinued operations [member] | Impairment of Onshore US assets [member] |  |  |
Disclosure of analysis of single amount of discontinued operations [line items] |  |  |
Exceptional items gross |  |  | (2,859)
Exceptional items tax |  |  | 109
Exceptional items net |  |  | (2,750)
Discontinued operations [member] | Non-controlling interests [member] |  |  |
Disclosure of analysis of single amount of discontinued operations [line items] |  |  |
Exceptional items gross |  |  |
Exceptional items tax |  |  |
Exceptional items net |  |  |
Discontinued operations [member] | Attributable to BHP shareholders [member] |  |  |
Disclosure of analysis of single amount of discontinued operations [line items] |  |  |
Exceptional items gross |  |  | (2,859)
Exceptional items tax |  |  | 601
Exceptional items net |  |  | $ (2,258)

X
- Definition Exceptional items, gross. + References No definition available. + Details
Name: | bhp_ExceptionalItemsGross
Namespace Prefix: | bhp_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Exceptional items, net. + References No definition available. + Details
Name: | bhp_ExceptionalItemsNet
Namespace Prefix: | bhp_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Income tax expense benefit relating to exceptional Items. + References No definition available. + Details
Name: | bhp_ExceptionalItemsTax
Namespace Prefix: | bhp_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
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_DisclosureOfAnalysisOfSingleAmountOfDiscontinuedOperationsLineItems
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | bhp_ExceptionalItemsAxis=bhp_USTaxReformMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | bhp_ExceptionalItemsAxis=ifrs-full_NoncontrollingInterestsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | bhp_ExceptionalItemsAxis=ifrs-full_EquityAttributableToOwnersOfParentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ContinuingAndDiscontinuedOperationsAxis=ifrs-full_DiscontinuedOperationsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | bhp_ExceptionalItemsAxis=bhp_ImpairmentOfOnshoreUSAssetsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |