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Borrowings - Additional information (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Disclosure of detailed information about borrowings [Line Items]    
Borrowing costs capitalised $ 424 $ 275
Oyu Tolgoi LLC    
Disclosure of detailed information about borrowings [Line Items]    
Deferral of the principal repayments (in years)   3 years
Extension of final maturity date (in years)   5 years
Accounting loss   $ 123
Borrowing costs capitalised   $ 50