XML 220 R129.htm IDEA: XBRL DOCUMENT v3.23.2

Climate change - Summary of Climate Change in Price-Only Sensitivities Reflect (Detail)	Jun. 30, 2023 $ / Per-tonne
Base case [member] | 2030 [member]
Disclosure of Detailed Information About Price Only Sensitivities of Coal Price [Line Items]
Coal price per ton	159
Base case [member] | 2050 [member]
Disclosure of Detailed Information About Price Only Sensitivities of Coal Price [Line Items]
Coal price per ton	170
1.5°C scenario [member] | 2030 [member]
Disclosure of Detailed Information About Price Only Sensitivities of Coal Price [Line Items]
Coal price per ton	127
1.5°C scenario [member] | 2050 [member]
Disclosure of Detailed Information About Price Only Sensitivities of Coal Price [Line Items]
Coal price per ton	135

X

- Definition

Coal price per ton,

+ References

No definition available.

+ Details

Name:	bhp_CoalPricePerTon
Namespace Prefix:	bhp_
Data Type:	srt-types:perUnitItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Disclosure of detailed information about price only sensitivities of coal price.

+ References

No definition available.

+ Details

Name:	bhp_DisclosureOfDetailedInformationAboutPriceOnlySensitivitiesOfCoalPriceLineItems
Namespace Prefix:	bhp_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	bhp_PriceSensitivitiesSourceAxis=bhp_PriceSensitivitiesBasePriceScenarioMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	bhp_BhpPeriodAxis=bhp_TwoThousandAndThirtyMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	bhp_BhpPeriodAxis=bhp_TwoThousandAndFiftyMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	bhp_PriceSensitivitiesSourceAxis=bhp_PriceSensitivitiesOnePointFiveScenarioMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: