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Borrowings - Additional information (Details) - USD ($)
$ in Millions
 12 Months Ended
Feb. 16, 2023
Dec. 31, 2023
Dec. 31, 2022
Disclosure of detailed information about borrowings [Line Items]      
Accounting loss $ 123    
Borrowing costs capitalised $ 50 $ 275 $ 416
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