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Cover
 12 Months Ended
Dec. 31, 2024
shares
Document Information [Line Items]  
Document Type 20-F
Document Registration Statement false
Document Annual Report true
Document Period End Date Dec. 31, 2024
Current Fiscal Year End Date --12-31
Document Transition Report false
Document Shell Company Report false
Entity File Number 001-10533
Entity Registrant Name Rio Tinto plc
Entity Incorporation, State or Country Code X0
Entity Address, Address Line One 6 St. James's Square
Entity Address, City or Town London
Entity Address, Postal Zip Code SW1Y 4AD
Entity Address, Country GB
Entity Common Stock, Shares Outstanding 1,255,944,847
Entity Well-known Seasoned Issuer Yes
Entity Voluntary Filers No
Entity Current Reporting Status Yes
Entity Interactive Data Current Yes
Entity Filer Category Large Accelerated Filer
Entity Emerging Growth Company false
ICFR Auditor Attestation Flag true
Document Financial Statement Error Correction [Flag] false
Document Accounting Standard International Financial Reporting Standards
Entity Shell Company false
Auditor Name KPMG LLP
Auditor Location London, United Kingdom
Auditor Firm ID 1118
Amendment Flag false
Document Fiscal Year Focus 2024
Document Fiscal Period Focus FY
Entity Central Index Key 0000863064
American Depositary Shares  
Document Information [Line Items]  
Title of 12(b) Security American Depositary Shares
Trading Symbol RIO
Security Exchange Name NYSE
Ordinary  
Document Information [Line Items]  
Title of 12(b) Security Ordinary Shares of 10p
Trading Symbol RIO
Security Exchange Name NYSE
7.125% Notes due 2028  
Document Information [Line Items]  
Title of 12(b) Security 7.125% Notes due 2028
Trading Symbol RIO
Security Exchange Name NYSE
5.000% Notes due 2033  
Document Information [Line Items]  
Title of 12(b) Security 5.000% Notes due 2033
Trading Symbol RIO
Security Exchange Name NYSE
5.200% Notes due 2040  
Document Information [Line Items]  
Title of 12(b) Security 5.200% Notes due 2040
Trading Symbol RIO
Security Exchange Name NYSE
4.750% Notes Due 2042  
Document Information [Line Items]  
Title of 12(b) Security 4.750% Notes due 2042
Trading Symbol RIO
Security Exchange Name NYSE
4.125% Notes Due 2042  
Document Information [Line Items]  
Title of 12(b) Security 4.125% Notes due 2042
Trading Symbol RIO
Security Exchange Name NYSE
2.750% Notes Due 2051  
Document Information [Line Items]  
Title of 12(b) Security 2.750% Notes due 2051
Trading Symbol RIO
Security Exchange Name NYSE
5.125% Notes due 2053  
Document Information [Line Items]  
Title of 12(b) Security 5.125% Notes due 2053
Trading Symbol RIO
Security Exchange Name NYSE
– Rio Tinto Limited  
Document Information [Line Items]  
Entity File Number 001-34121
Entity Registrant Name Rio Tinto Limited
Entity Incorporation, State or Country Code C3
Entity Address, Address Line One Level 43, 120 Collins Street
Entity Address, City or Town Melbourne
Entity Address, Postal Zip Code 3000
Entity Address, Country AU
Entity Common Stock, Shares Outstanding 371,217,214
Business Contact  
Document Information [Line Items]  
Entity Address, Address Line One 6 St. James's Square
Entity Address, City or Town London
Entity Address, Postal Zip Code SW1Y 4AD
Entity Address, Country GB
Contact Personnel Name Julie Parent
City Area Code 514
Local Phone Number 848-8519
Contact Personnel Email Address julie.parent@riotinto.com
KPMG  
Document Information [Line Items]  
Auditor Name KPMG
Auditor Location Perth, Australia
Auditor Firm ID 1020