Cover Page
 12 Months Ended
Jun. 30, 2021
shares
Document Information [line Items]  
Document Type 20-F
Amendment Flag false
Document Period End Date Jun. 30, 2021
Document Fiscal Year Focus 2021
Document Fiscal Period Focus FY
Entity Registrant Name BHP GROUP LIMITED
Entity Central Index Key 0000811809
Current Fiscal Year End Date --06-30
Entity Well-known Seasoned Issuer Yes
Entity Voluntary Filers No
Entity Current Reporting Status Yes
Entity Shell Company false
Entity Filer Category Large Accelerated Filer
Entity Emerging Growth Company false
Entity Address, Address Line One 171 COLLINS STREET
Entity Address, City or Town MELBOURNE
Entity Address, Postal Zip Code 3000
Entity Incorporation, State or Country Code C3
Entity Address, Country AU
Entity Common Stock, Shares Outstanding 2,950,251,394
Entity Interactive Data Current Yes
Document Annual Report true
Document Transition Report false
Document Shell Company Report false
Document Registration Statement false
Entity File Number 001-09526
ICFR Auditor Attestation Flag true
Document Accounting Standard International Financial Reporting Standards
BHP Group​ Ltd​ [member] | Business Contact [Member]  
Document Information [line Items]  
Entity Address, Address Line One 171 COLLINS STREET
Entity Address, City or Town MELBOURNE
Entity Address, Postal Zip Code 3000
Entity Address, Country AU
Contact Personnel Name STEFANIE WILKINSON
City Area Code 61 3
Local Phone Number 9609 3333
Contact Personnel Fax Number 61 3 9609 3015
BHP Group​ Ltd​ [member] | American Depositary Shares [Member]  
Document Information [line Items]  
Title of 12(b) Security American Depositary Shares
Trading Symbol BHP
Security Exchange Name NYSE
BHP Group​ Ltd​ [member] | Ordinary shares [member]  
Document Information [line Items]  
Title of 12(b) Security Ordinary Shares
Trading Symbol BHP
Security Exchange Name NYSE
BHP Group Plc [member]  
Document Information [line Items]  
Document Type 20-F
Amendment Flag false
Document Period End Date Jun. 30, 2021
Document Fiscal Year Focus 2021
Document Fiscal Period Focus FY
Entity Registrant Name BHP GROUP PLC
Entity Central Index Key 0001171264
Current Fiscal Year End Date --06-30
Entity Address, Address Line One NOVA SOUTH
Entity Address, Address Line Two 160 VICTORIA STREET
Entity Address, City or Town LONDON
Entity Address, Postal Zip Code SW1E 5LB
Entity Address, Country GB
Entity Common Stock, Shares Outstanding 2,112,071,796
Entity File Number 001-31714
BHP Group Plc [member] | Business Contact [Member]  
Document Information [line Items]  
Entity Address, Address Line One NOVA SOUTH
Entity Address, Address Line Two 160 VICTORIA STREET
Entity Address, City or Town LONDON
Entity Address, Postal Zip Code SW1E 5LB
Entity Address, Country GB
Contact Personnel Name STEFANIE WILKINSON
City Area Code 44 20
Local Phone Number 7802 4000
Contact Personnel Fax Number 44 20 7802 4111
BHP Group Plc [member] | American Depositary Shares [Member]  
Document Information [line Items]  
Title of 12(b) Security American Depositary Shares
Trading Symbol BBL
Security Exchange Name NYSE
BHP Group Plc [member] | Ordinary shares [member]  
Document Information [line Items]  
Title of 12(b) Security Ordinary Shares, nominal value US$0.50 each
Trading Symbol BBL
Security Exchange Name NYSE