Quarterly report pursuant to Section 13 or 15(d)

Document and Entity Information

v3.21.2
Document and Entity Information - shares
 4 Months Ended
Jun. 30, 2021
Sep. 10, 2021
Document Information [Line Items]    
Document Type 10-Q  
Document Quarterly Report true  
Document Transition Report false  
Document Period End Date Jun. 30, 2021  
Entity File Number 001-40685  
Entity Registrant Name METALS ACQUISITION CORP  
Entity Incorporation, State or Country Code E9  
Entity Tax Identification Number 98-1589041  
Entity Address, Address Line One 425 Houston Street, Suite 400  
Entity Address, City or Town Fort Worth  
Entity Address State Or Province TX  
Entity Address, Postal Zip Code 76102  
City Area Code 817  
Local Phone Number 698-9901  
Entity Current Reporting Status No  
Entity Interactive Data Current Yes  
Entity Filer Category Non-accelerated Filer  
Entity Small Business true  
Entity Emerging Growth Company true  
Entity Ex Transition Period false  
Entity Shell Company true  
Entity Central Index Key 0001853021  
Current Fiscal Year End Date --12-31  
Document Fiscal Year Focus 2021  
Document Fiscal Period Focus Q2  
Amendment Flag false  
Transition Report false  
Units, each consisting of one Class A Ordinary share, $0.0001 par value, and one-third of one redeemable warrant    
Document Information [Line Items]    
Title of 12(b) Security Units, each consisting of one Class A Ordinary share, $0.0001 par value, and one-third of one redeemable warrant  
Trading Symbol MTAL.U  
Security Exchange Name NYSE  
Class A Common Stock    
Document Information [Line Items]    
Title of 12(b) Security Shares of Class A ordinary share, included as part of the units  
Trading Symbol MTAL  
Security Exchange Name NYSE  
Entity Common Stock, Shares Outstanding   26,514,780
Redeemable warrants included as part of the units, each whole warrant exercisable for one share of Class A ordinary share at an exercise price of $11.50    
Document Information [Line Items]    
Title of 12(b) Security Redeemable warrants included as part of the units, each whole warrant exercisable for one share of Class A ordinary share at an exercise price  
Trading Symbol MTAL WS  
Security Exchange Name NYSE  
Class B Common Stock    
Document Information [Line Items]    
Entity Common Stock, Shares Outstanding   7,187,500