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Related undertakings - Summary of Other Group Entities having Effective Ownership Less than 100% (Detail) | 12 Months Ended |  |
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Dec. 31, 2017 $ / shares | Dec. 31, 2017 £ / shares | Dec. 31, 2017 $ / shares | Dec. 31, 2017 $ / shares | Dec. 31, 2017 € / shares | Dec. 31, 2017 ₨ / shares | Dec. 31, 2017 $ / shares | Dec. 31, 2017 $ / shares | Dec. 31, 2017 Rp / shares | Dec. 31, 2017 R / shares | Dec. 31, 2017 FG / shares | Dec. 31, 2017 ₮ / shares | Dec. 31, 2017 $ / shares | Dec. 31, 2017 kr / shares | Dec. 31, 2017 ¥ / shares | Dec. 31, 2017 / shares | Dec. 31, 2017 ₱ / shares | Dec. 31, 2017 ر.ع. / shares | Jan. 31, 2013 $ / shares
Disclosure Of Significant Investments In Associates Subsidiaries And Join Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Effective Group % ownership | 50.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Canada [member] | Ordinary shares [Member] | Canada, Dollars [Member] | Northern Land Company Ltd [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Investments In Associates Subsidiaries And Join Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share class |  |  |  | $ 1.00 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Effective Group % ownership | 58.70% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share class |  |  |  | 1.00 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company of operation, Associate | Northern Land Company Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of incorporation, Associate | Canada |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proportion of class held (%), Associate | 50.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office address | 235 Water Street, Ste 1000 Scotia Ctr, St-John’s Newfoundland A1C 1B6 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Canada [member] | Ordinary shares [Member] | Canada, Dollars [Member] | Quebec North Shore And Labrador Railway Company Compagnie De Chemin De Fer Du Littoral Nord De Quebec Et Du Labrador Inc |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Investments In Associates Subsidiaries And Join Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share class |  |  |  | 27.59 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Effective Group % ownership | 58.70% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company of operation, Subsidiary | Quebec North Shore and Labrador Railway Company/ Compagnie de Chemin de Fer du Littoral Nord de Quebec et du Labrador Inc |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share class |  |  |  | 27.59 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of incorporation, Associate | Canada |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proportion of class held (%), Associate | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office address | 400-1190 Avenue des Canadiens-de-Montréal, Montréal Québec H3B 0E3, Canada |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Canada [member] | Common shares [member] | Canada, Dollars [Member] | Thr mines bc ltd [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Investments In Associates Subsidiaries And Join Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Effective Group % ownership | 50.80% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company of operation, Subsidiary | THR MINES (BC) LTD. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% of share class held by Group companies | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office address | 354-200 Granville Street, Vancouver BC V6C 1S4, Canada |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of incorporation, Associate | Canada |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Canada [member] | Common shares [member] | US Dollars [Member] | Thr mines bc ltd [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Investments In Associates Subsidiaries And Join Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Effective Group % ownership | 50.80% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company of operation, Subsidiary | THR MINES (BC) LTD. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% of share class held by Group companies | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office address | 354-200 Granville Street, Vancouver BC V6C 1S4, Canada |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of incorporation, Associate | Canada |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
NETHERLANDS | Ordinary shares [Member] | Euro Member Countries, Euro | Oyu Tolgoi Netherlands Bv |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Investments In Associates Subsidiaries And Join Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share class | € / shares |  |  |  |  | € 100.00 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Effective Group % ownership | 50.80% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company of operation, Subsidiary | Oyu Tolgoi Netherlands BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share class | € / shares |  |  |  |  | 100.00 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of incorporation, Associate | Netherlands |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proportion of class held (%), Associate | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office address | Prins Bernhardplein 200 , Amsterdam, 1097 JB, The Netherlands |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
NETHERLANDS | Ordinary shares [Member] | Euro Member Countries, Euro | Saryarka b v [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Investments In Associates Subsidiaries And Join Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share class | € / shares |  |  |  |  | 200.00 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Effective Group % ownership | 75.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company of operation, Subsidiary | Saryarka B.V. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share class | € / shares |  |  |  |  | 200.00 |  |  |  |  |  |  |  |  |  |  |  |  |  |
% of share class held by Group companies | 75.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office address | Welplaatweg 104, 3197 KS , Botlek-Rotterdam, The Netherlands, Netherlands |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of incorporation, Associate | Netherlands |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Mongolia [Member] | Common shares [member] | Mongolia, Tugriks | Oyu Tolgoi LLC [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Investments In Associates Subsidiaries And Join Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share class | ₮ / shares |  |  |  |  |  |  |  |  |  |  |  | ₮ 10,000.00 |  |  |  |  |  |  |
Effective Group % ownership | 33.50% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of incorporation, Subsidiary | Mongolia |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share class | ₮ / shares |  |  |  |  |  |  |  |  |  |  |  | 10,000.00 |  |  |  |  |  |  |
Company of operation, Associate | Oyu Tolgoi LLC |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proportion of class held (%), Associate | 66.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office address | Level 12 Monnis Tower, Chinggis Avenue-15, 1st khoroo, Sukhbaatar District, Ulaanbaatar, 14240, Mongolia |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Mongolia [Member] | Common shares [member] | Mongolia, Tugriks | Sgls llc [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Investments In Associates Subsidiaries And Join Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share class | ₮ / shares |  |  |  |  |  |  |  |  |  |  |  | 10,000 |  |  |  |  |  |  |
Effective Group % ownership | 50.80% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company of operation, Subsidiary | SGLS LLC |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of incorporation, Subsidiary | Mongolia |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share class | ₮ / shares |  |  |  |  |  |  |  |  |  |  |  | 10,000 |  |  |  |  |  |  |
% of share class held by Group companies | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office address | Suite 1302, F13, Monnis Tower, Chingis Avenue-15, 1st Khoroo, Sukhbaatar district, Ulaanbaatar, 14240, Mongolia |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Australia [member] | Ordinary shares [Member] | Australian Dollars [Member] | Leichhardt Coal Pty Limited [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Investments In Associates Subsidiaries And Join Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Effective Group % ownership | 44.70% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company of operation, Associate | Leichhardt Coal Pty Limited |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of incorporation, Associate | Australia |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proportion of class held (%), Associate | 44.70% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office address | 123 Albert Street, Brisbane QLD 4000, Australia |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Australia [member] | Ordinary shares [Member] | Australian Dollars [Member] | Rightship pty ltd[member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Investments In Associates Subsidiaries And Join Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Effective Group % ownership | 33.30% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company of operation, Associate | Rightship Pty Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of incorporation, Associate | Australia |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proportion of class held (%), Associate | 33.30% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office address | Level 20, 500 Collins Street, Melbourne VIC 3000, Australia |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Australia [member] | Ordinary shares [Member] | Australian Dollars [Member] | Robe River Ore Sales Pty Ltd [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Investments In Associates Subsidiaries And Join Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Effective Group % ownership | 57.10% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company of operation, Subsidiary | Robe River Ore Sales Pty. Ltd. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% of share class held by Group companies | 65.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office address | Level 18 Central Park, 152-158 St. Georges Terrace, Perth WA 6000, Australia |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of incorporation, Associate | Australia |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Australia [member] | Class D Shares | Australian Dollars [Member] | Queensland Alumina Limited [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Investments In Associates Subsidiaries And Join Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Effective Group % ownership | 80.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company of operation, Associate | Queensland Alumina Limited |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of incorporation, Associate | Australia |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proportion of class held (%), Associate | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office address | Plant Operations Building, Parsons Point, Gladstone QLD 4680, Australia |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Australia [member] | Class B shares [member] | Australian Dollars [Member] | Queensland Alumina Limited [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Investments In Associates Subsidiaries And Join Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Effective Group % ownership | 80.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company of operation, Associate | Queensland Alumina Limited |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of incorporation, Associate | United States |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proportion of class held (%), Associate | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office address | Plant Operations Building, Parsons Point, Gladstone QLD 4680, Australia |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Australia [member] | Class B shares [member] | Australian Dollars [Member] | Robe River Mining Co Pty Ltd [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Investments In Associates Subsidiaries And Join Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Effective Group % ownership | 73.60% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company of operation, Subsidiary | Robe River Mining Co. Pty. Ltd. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% of share class held by Group companies | 76.40% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office address | Level 18 Central Park, 152-158 St. Georges Terrace, Perth WA 6000, Australia |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of incorporation, Associate | Australia |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Australia [member] | Class C Shares | Australian Dollars [Member] | Queensland Alumina Limited [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Investments In Associates Subsidiaries And Join Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Effective Group % ownership | 80.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company of operation, Associate | Queensland Alumina Limited |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of incorporation, Associate | United States |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proportion of class held (%), Associate | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office address | Plant Operations Building, Parsons Point, Gladstone QLD 4680, Australia |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Australia [member] | Class A shares [member] | Australian Dollars [Member] | Robe River Mining Co Pty Ltd [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Investments In Associates Subsidiaries And Join Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Effective Group % ownership | 73.60% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company of operation, Subsidiary | Robe River Mining Co. Pty. Ltd. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% of share class held by Group companies | 40.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office address | Level 18 Central Park, 152-158 St. Georges Terrace, Perth WA 6000, Australia |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of incorporation, Associate | Australia |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Singapore [member] | Ordinary shares [Member] | US Dollars [Member] | Singapore metals pte ltd [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Investments In Associates Subsidiaries And Join Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Effective Group % ownership | 50.80% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company of operation, Subsidiary | Singapore Metals Pte. Ltd. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% of share class held by Group companies | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office address | 77 Robinson Road, #13-00, Robinson 77, 068896, Singapore |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of incorporation, Associate | Singapore |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Singapore [member] | Ordinary shares [Member] | US Dollars [Member] | Thr kharmagtai pte ltd [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Investments In Associates Subsidiaries And Join Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Effective Group % ownership | 50.80% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company of operation, Subsidiary | THR Kharmagtai Pte Ltd. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% of share class held by Group companies | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office address | 77 Robinson Road, #13-00, Robinson 77, 068896, Singapore |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of incorporation, Associate | Singapore |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
JERSEY | Ordinary shares [Member] | US Dollars [Member] | Simfer jersey finance one ltd [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Investments In Associates Subsidiaries And Join Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Effective Group % ownership | 53.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company of operation, Subsidiary | Simfer Jersey Finance 1 Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% of share class held by Group companies | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office address | 22 Grenville Street, St Helier, JE4 8PX, Jersey |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of incorporation, Associate | Jersey |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
JERSEY | Ordinary shares [Member] | US Dollars [Member] | Simfer jersey finance two ltd [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Investments In Associates Subsidiaries And Join Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Effective Group % ownership | 53.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company of operation, Subsidiary | Simfer Jersey Finance 2 Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% of share class held by Group companies | 53.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office address | 22 Grenville Street, St Helier, JE4 8PX, Jersey |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of incorporation, Associate | Jersey |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
JERSEY | Ordinary shares [Member] | US Dollars [Member] | Simfer Jersey Limited [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Investments In Associates Subsidiaries And Join Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Effective Group % ownership | 53.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company of operation, Subsidiary | Simfer Jersey Limited |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% of share class held by Group companies | 53.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office address | 22 Grenville Street, St Helier, JE4 8PX, Jersey |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of incorporation, Associate | Jersey |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
United States [member] | Resolution Copper Mining LLC [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Investments In Associates Subsidiaries And Join Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Effective Group % ownership | 55.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company of operation, Associate | Resolution Copper Mining LLC |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of incorporation, Associate | United States |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office address | CSC, 251 Little Falls Drive, Wilmington DE 19808, U.S.A. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
United States [member] | Thr delaware holdings llc [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Investments In Associates Subsidiaries And Join Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Effective Group % ownership | 50.80% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company of operation, Subsidiary | THR Delaware Holdings, LLC |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office address | National Corporate Research, Ltd., 850 New Burton Road, Suite 201, Dover DE 19904, United States |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of incorporation, Associate | United States |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
United States [member] | Common shares [member] | US Dollars [Member] | Magma Arizona Railroad Company [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Investments In Associates Subsidiaries And Join Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share class | $ 100 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Effective Group % ownership | 54.90% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share class | $ 100 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company of operation, Associate | Magma Arizona Railroad Company |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of incorporation, Associate | United States |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proportion of class held (%), Associate | 99.90% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office address | CSC, 2338 W. Royal Palm Road, Suite J, Phoenix AZ 85021 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
United States [member] | Common shares [member] | US Dollars [Member] | Pechiney Reynolds Quebec Inc [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Investments In Associates Subsidiaries And Join Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share class | $ 10.00 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Effective Group % ownership | 50.20% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share class | $ 10.00 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company of operation, Associate | Pechiney Reynolds Quebec, Inc. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of incorporation, Associate | United States |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proportion of class held (%), Associate | 50.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office address | CSC, 233 South 13th Street, Suite 1900, Lincoln NE 68508, U.S.A. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
United States [member] | Preferred Shares [member] | US Dollars [Member] | Pechiney Reynolds Quebec Inc [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Investments In Associates Subsidiaries And Join Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share class | $ 100.00 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Effective Group % ownership | 50.20% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share class | $ 100.00 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company of operation, Associate | Pechiney Reynolds Quebec, Inc. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of incorporation, Associate | United States |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proportion of class held (%), Associate | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office address | CSC, 233 South 13th Street, Suite 1900, Lincoln NE 68508, U.S.A. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Lao People’s Democratic Republic | Ordinary shares [Member] | US Dollars [Member] | Lao Sanxai Minerals Company Limited |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Investments In Associates Subsidiaries And Join Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share class | $ 1.00 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Effective Group % ownership | 70.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share class | $ 1.00 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company of operation, Associate | Lao Sanxai Minerals Company Limited |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proportion of class held (%), Associate | 70.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office address | 5th Floor, ANZ Bank Building, 33 Lane Xang Avenue, Hatsady Village, Chanthaboury District, Vientiane Capital, Lao People’s Democratic Republic |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
CHILE | Minera Escondida Ltda [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Investments In Associates Subsidiaries And Join Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Effective Group % ownership | 30.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company of operation, Associate | Minera Escondida Ltda |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of incorporation, Associate | Chile |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office address | Av.Cerro Plomo, Piso 18,Las Condes, Santiago, 7580154, Chile |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
LUXEMBOURG | Ordinary shares [Member] | US Dollars [Member] | Movele [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Investments In Associates Subsidiaries And Join Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Effective Group % ownership | 50.80% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company of operation, Associate | Movele |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of incorporation, Associate | Luxembourg |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proportion of class held (%), Associate | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office address | 22 rue Jean-Pierre Brasseur, L-1258, Luxembourg |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
LUXEMBOURG | Preferred Shares [member] | US Dollars [Member] | Movele [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Investments In Associates Subsidiaries And Join Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Effective Group % ownership | 50.80% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company of operation, Associate | Movele |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of incorporation, Associate | Luxembourg |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proportion of class held (%), Associate | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office address | 22 rue Jean-Pierre Brasseur, L-1258, Luxembourg |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
NEW ZEALAND | Ordinary shares [Member] | New Zealand, Dollars | N Z A S Retirement Fund Trustee Limited |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Investments In Associates Subsidiaries And Join Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Effective Group % ownership | 79.40% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company of operation, Associate | NZAS Retirement Fund Trustee Limited |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of incorporation, Associate | New Zealand |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proportion of class held (%), Associate | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office address | Mercer (NZ) Limiited, Level 8, 113-119 The Terrace, Wellington, 6140, New Zealand |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
NEW ZEALAND | A Ordinary Shares | New Zealand, Dollars | New Zealand Aluminium Smelters Ltd [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Investments In Associates Subsidiaries And Join Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share class |  |  |  |  |  |  |  | $ 1.00 |  |  |  |  |  |  |  |  |  |  |
Effective Group % ownership | 79.40% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share class |  |  |  |  |  |  |  | $ 1.00 |  |  |  |  |  |  |  |  |  |  |
Company of operation, Associate | New Zealand Aluminium Smelters Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of incorporation, Associate | New Zealand |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proportion of class held (%), Associate | 79.40% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office address | Tiwai Road , Southland via Intercargill, New Zealand |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
SOUTH AFRICA | Ordinary shares [Member] | South Africa, Rand | Nozalela Mineral Sands (Pty) Ltd [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Investments In Associates Subsidiaries And Join Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share class | R / shares |  |  |  |  |  |  |  |  |  | R 1.00 |  |  |  |  |  |  |  |  |
Effective Group % ownership | 74.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share class | R / shares |  |  |  |  |  |  |  |  |  | 1.00 |  |  |  |  |  |  |  |  |
Company of operation, Associate | Nozalela Mineral Sands (Pty) Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of incorporation, Associate | South Africa |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proportion of class held (%), Associate | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office address | The Farm RBM, Number 16317, KwaZulu-Natal, South Africa |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
SOUTH AFRICA | Ordinary shares [Member] | South Africa, Rand | Riversdale anthracite colliery proprietary ltd [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Investments In Associates Subsidiaries And Join Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share class | R / shares |  |  |  |  |  |  |  |  |  | 2.00 |  |  |  |  |  |  |  |  |
Effective Group % ownership | 74.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company of operation, Subsidiary | Riversdale Anthracite Colliery (Proprietary) Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share class | R / shares |  |  |  |  |  |  |  |  |  | 2.00 |  |  |  |  |  |  |  |  |
% of share class held by Group companies | 74.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office address | Ground Floor – Cypress Place North, Woodmead Business Park, 140-142 Western Service Road, Woodmead, 2151, South Africa |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of incorporation, Associate | South Africa |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
SOUTH AFRICA | Preferred Shares [member] | South Africa, Rand | Richards Bay Prefco (Pty) Ltd [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Investments In Associates Subsidiaries And Join Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share class | R / shares |  |  |  |  |  |  |  |  |  | 0.01 |  |  |  |  |  |  |  |  |
Effective Group % ownership | 99.90% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share class | R / shares |  |  |  |  |  |  |  |  |  | 0.01 |  |  |  |  |  |  |  |  |
Company of operation, Associate | Richards Bay Prefco (Pty) Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of incorporation, Associate | South Africa |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proportion of class held (%), Associate | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office address | The Farm RBM, Number 16317, KwaZulu-Natal, South Africa |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
SOUTH AFRICA | BHP Billiton Preference Shares [member] | South Africa, Rand | Richards Bay Titanium (Proprietary) Limited [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Investments In Associates Subsidiaries And Join Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share class | R / shares |  |  |  |  |  |  |  |  |  | 0.01 |  |  |  |  |  |  |  |  |
Effective Group % ownership | 73.90% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share class | R / shares |  |  |  |  |  |  |  |  |  | 0.01 |  |  |  |  |  |  |  |  |
Company of operation, Associate | Richards Bay Titanium (Proprietary) Limited |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of incorporation, Associate | South Africa |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proportion of class held (%), Associate | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office address | The Farm RBM, Number 16317, KwaZulu-Natal, South Africa |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
SOUTH AFRICA | BHP Billiton Preference Shares [member] | South Africa, Rand | Richards Bay Mining (Proprietary) Limited [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Investments In Associates Subsidiaries And Join Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share class | R / shares |  |  |  |  |  |  |  |  |  | 0.01 |  |  |  |  |  |  |  |  |
Effective Group % ownership | 73.90% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share class | R / shares |  |  |  |  |  |  |  |  |  | 0.01 |  |  |  |  |  |  |  |  |
Company of operation, Associate | Richards Bay Mining (Proprietary) Limited |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of incorporation, Associate | South Africa |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proportion of class held (%), Associate | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office address | The Farm RBM, Number 16317, KwaZulu-Natal, South Africa |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
SOUTH AFRICA | B ordinary shares [member] | South Africa, Rand | Richards Bay Titanium (Proprietary) Limited [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Investments In Associates Subsidiaries And Join Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share class | R / shares |  |  |  |  |  |  |  |  |  | 0.01 |  |  |  |  |  |  |  |  |
Effective Group % ownership | 73.90% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share class | R / shares |  |  |  |  |  |  |  |  |  | 0.01 |  |  |  |  |  |  |  |  |
Company of operation, Associate | Richards Bay Titanium (Proprietary) Limited |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of incorporation, Associate | South Africa |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proportion of class held (%), Associate | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office address | The Farm RBM, Number 16317, KwaZulu-Natal, South Africa |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
SOUTH AFRICA | B ordinary shares [member] | South Africa, Rand | Richards Bay Mining (Proprietary) Limited [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Investments In Associates Subsidiaries And Join Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share class | R / shares |  |  |  |  |  |  |  |  |  | 0.01 |  |  |  |  |  |  |  |  |
Effective Group % ownership | 73.90% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share class | R / shares |  |  |  |  |  |  |  |  |  | 0.01 |  |  |  |  |  |  |  |  |
Company of operation, Associate | Richards Bay Mining (Proprietary) Limited |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of incorporation, Associate | South Africa |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proportion of class held (%), Associate | 99.90% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office address | The Farm RBM, Number 16317, KwaZulu-Natal, South Africa |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
SOUTH AFRICA | B preference shares [member] | South Africa, Rand | Richards Bay Titanium (Proprietary) Limited [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Investments In Associates Subsidiaries And Join Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share class | R / shares |  |  |  |  |  |  |  |  |  | 0.01 |  |  |  |  |  |  |  |  |
Effective Group % ownership | 73.90% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share class | R / shares |  |  |  |  |  |  |  |  |  | 0.01 |  |  |  |  |  |  |  |  |
Company of operation, Associate | Richards Bay Titanium (Proprietary) Limited |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of incorporation, Associate | South Africa |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proportion of class held (%), Associate | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office address | The Farm RBM, Number 16317, KwaZulu-Natal, South Africa |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
SOUTH AFRICA | B preference shares [member] | South Africa, Rand | Richards Bay Mining (Proprietary) Limited [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Investments In Associates Subsidiaries And Join Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share class | R / shares |  |  |  |  |  |  |  |  |  | 0.01 |  |  |  |  |  |  |  |  |
Effective Group % ownership | 73.90% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share class | R / shares |  |  |  |  |  |  |  |  |  | 0.01 |  |  |  |  |  |  |  |  |
Company of operation, Associate | Richards Bay Mining (Proprietary) Limited |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of incorporation, Associate | South Africa |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proportion of class held (%), Associate | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office address | The Farm RBM, Number 16317, KwaZulu-Natal, South Africa |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Virgin Islands, British [member] | Common shares [member] | US Dollars [Member] | Orian Holding Corp |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Investments In Associates Subsidiaries And Join Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Effective Group % ownership | 50.80% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company of operation, Associate | Orian Holding Corp |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of incorporation, Associate | British Virgin Islands |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proportion of class held (%), Associate | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office address | Midocean Cambers-Management and Trust Services (BVI) Limited, PO Box 805, Pelican Drive, Road Town, Tortola,VG 110, British Virgin Islands |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
PHILIPPINES | Ordinary shares [Member] | Philippines, Pesos | Pechiney Philippines Inc |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Investments In Associates Subsidiaries And Join Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share class | ₱ / shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | ₱ 10.00 |  |
Effective Group % ownership | 99.90% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share class | ₱ / shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 10.00 |  |
Company of operation, Associate | Pechiney Philippines Inc. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of incorporation, Associate | Philippines |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proportion of class held (%), Associate | 99.90% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office address | Room 306, ITC Building, 337 Sen Gil Puyat Avenue, Markati, Metro Manila, Philippines |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
France [member] | Ordinary shares [Member] | Euro Member Countries, Euro | Procivis savoie [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Investments In Associates Subsidiaries And Join Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share class | € / shares |  |  |  |  | 19.00 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Effective Group % ownership | 22.10% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share class | € / shares |  |  |  |  | 19.00 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company of operation, Associate | Procivis Savoie |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of incorporation, Associate | France |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proportion of class held (%), Associate | 22.10% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office address | 116 Quai Charles Roissard, 73000, Chambéry, France |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Indonesia [member] | Ordinary shares [Member] | US Dollars [Member] | PT Mitra Sumbawa Minerals [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Investments In Associates Subsidiaries And Join Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share class | $ 1.00 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Effective Group % ownership | 90.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share class | $ 1.00 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company of operation, Associate | PT Mitra Sumbawa Minerals |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of incorporation, Associate | Indonesia |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proportion of class held (%), Associate | 90.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office address | 15th Floor, Menara Anugrah, Kantor Taman E3.3, Jalan DR. Ide Anak Agung Gde Agung Lot 8.6-8.7, Jakarta, 12950, Indonesia |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Indonesia [member] | Ordinary shares [Member] | US Dollars [Member] | PT Rikit Alas Minerals [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Investments In Associates Subsidiaries And Join Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share class | $ 1.00 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Effective Group % ownership | 90.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company of operation, Subsidiary | PT Rikit Alas Minerals |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share class | $ 1.00 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of incorporation, Associate | Indonesia |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proportion of class held (%), Associate | 90.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office address | 15th Floor, Menara Anugrah, Kantor Taman E3.3, Jalan DR. Ide Anak Agung Gde Agung Lot 8.6-8.7, Jakarta, 12950, Indonesia |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Indonesia [member] | Ordinary shares [Member] | Indonesia, Rupiahs | PT Hutan Lindung Kelian Lestari [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Investments In Associates Subsidiaries And Join Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share class | Rp / shares |  |  |  |  |  |  |  |  | Rp 9,803.00 |  |  |  |  |  |  |  |  |  |
Effective Group % ownership | 99.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company of operation, Subsidiary | PT Hutan Lindung Kelian Lestari |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share class | Rp / shares |  |  |  |  |  |  |  |  | 9,803.00 |  |  |  |  |  |  |  |  |  |
Country of incorporation, Associate | Indonesia |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proportion of class held (%), Associate | 99.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office address | Kelian Mine Site, West Kutai, East Kalimantan, Indonesia |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Indonesia [member] | Ordinary shares [Member] | Indonesia, Rupiahs | PT Kelian Equatorial Mining [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Investments In Associates Subsidiaries And Join Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share class | Rp / shares |  |  |  |  |  |  |  |  | 1,080.00 |  |  |  |  |  |  |  |  |  |
Effective Group % ownership | 90.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company of operation, Subsidiary | PT Kelian Equatorial Mining |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share class | Rp / shares |  |  |  |  |  |  |  |  | Rp 1,080.00 |  |  |  |  |  |  |  |  |  |
Country of incorporation, Associate | Indonesia |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proportion of class held (%), Associate | 90.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office address | 31st Floor, Menara BTPN, Jl. Dr. Ide Anak Agung Gde Agung Lot 5.5-5.6, Mega Kuningan, Jakarta, 12950, Indonesia |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Madagascar [member] | Common shares [member] | US Dollars [Member] | QIT Madagascar Minerals SA [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Investments In Associates Subsidiaries And Join Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share class | $ 10.00 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Effective Group % ownership | 80.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company of operation, Subsidiary | QIT Madagascar Minerals SA |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share class | $ 10.00 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of incorporation, Associate | Madagascar |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proportion of class held (%), Associate | 80.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office address | Immeuble ASSIST, Ivandry , Lot N°35, 5ème étage, 101 Antananarivo , Antananarivo, Madagascar |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Madagascar [member] | Certicats d'investissemant [Member] | US Dollars [Member] | QIT Madagascar Minerals SA [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Investments In Associates Subsidiaries And Join Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share class | $ 10.00 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Effective Group % ownership | 80.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company of operation, Subsidiary | QIT Madagascar Minerals SA |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share class | $ 10.00 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of incorporation, Associate | Madagascar |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proportion of class held (%), Associate | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office address | Immeuble ASSIST, Ivandry , Lot N°35, 5ème étage, 101 Antananarivo , Antananarivo, Madagascar |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
India [member] | Ordinary shares [Member] | India, Rupees | Rio tinto orissa mining private ltd [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Investments In Associates Subsidiaries And Join Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share class | ₨ / shares |  |  |  |  |  | ₨ 100.00 |  |  |  |  |  |  |  |  |  |  |  |  |
Company of operation, Subsidiary | Rio Tinto Orissa Mining Private Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share class | ₨ / shares |  |  |  |  |  | ₨ 100.00 |  |  |  |  |  |  |  |  |  |  |  |  |
Country of incorporation, Associate | India |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proportion of class held (%), Associate | 51.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Effective subsidiary group % ownership | 51.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office address | N-3 / 356, IRC Village, Nayapalli, Bhubaneswar, Orissa, 751015, India |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Oman [member] | Ordinary shares [Member] | Oman, Rials | Rio Tinto Sohar Logistics LLC [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Investments In Associates Subsidiaries And Join Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share class | ر.ع. / shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | ر.ع. 1.00 |
Effective Group % ownership | 70.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company of operation, Subsidiary | Rio Tinto Sohar Logistics LLC |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share class | ر.ع. / shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1.00 |
% of share class held by Group companies | 70.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office address | P.O. Box 686, Ruwi, 112, Oman |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of incorporation, Associate | Oman |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Oman [member] | Ordinary shares [Member] | Oman, Rials | Sohar Aluminium Co. L.L.C. [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Investments In Associates Subsidiaries And Join Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share class | ر.ع. / shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1.00 |
Effective Group % ownership | 20.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share class | ر.ع. / shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | ر.ع. 1.00 |
% of share class held by Group companies | 20.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office address | Sohar Industrial Estate, P.O. Box 80, PC 327, Sohar, Sultanate of Oman |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company of operation, Associate | Sohar Aluminium Co. L.L.C. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of incorporation, Associate | Oman |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Namibia [member] | B Shares Shares | Namibia, Dollars | Rossing Uranium Limited [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Investments In Associates Subsidiaries And Join Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share class |  |  |  |  |  |  |  |  |  |  |  |  | $ 1 |  |  |  |  |  |
Effective Group % ownership | 35.60% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company of operation, Subsidiary | Rossing Uranium Limited |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share class |  |  |  |  |  |  |  |  |  |  |  |  | 1 |  |  |  |  |  |
% of share class held by Group companies | 71.20% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office address | 360 Sam Nujoma Drive, Klein Windhoek, Windhoek, Namibia |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of incorporation, Associate | Namibia |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Namibia [member] | C shares [member] | Namibia, Dollars | Rossing Uranium Limited [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Investments In Associates Subsidiaries And Join Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share class |  |  |  |  |  |  |  |  |  |  |  |  | 0.1 |  |  |  |  |  |
Effective Group % ownership | 35.60% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company of operation, Subsidiary | Rossing Uranium Limited |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share class |  |  |  |  |  |  |  |  |  |  |  |  | $ 0.1 |  |  |  |  |  |
% of share class held by Group companies | 70.60% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office address | 360 Sam Nujoma Drive, Klein Windhoek, Windhoek, Namibia |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of incorporation, Associate | Namibia |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
United Kingdom [member] | Ordinary shares [Member] | United Kingdom, Pounds | Simfer jersey nominee limited [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Investments In Associates Subsidiaries And Join Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share class | £ / shares |  | £ 1.00 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Effective Group % ownership | 53.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company of operation, Subsidiary | Simfer Jersey Nominee Limited |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share class | £ / shares |  | 1.00 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% of share class held by Group companies | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office address | 6 St James’s Square, London, SW1Y 4AD, United Kingdom |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of incorporation, Associate | United Kingdom |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Guinea [member] | Societe Miniere Et De Participations |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Investments In Associates Subsidiaries And Join Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Effective Group % ownership | 50.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company of operation, Subsidiary | Societe Miniere Et De Participations |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office address | Tougue, Guinea |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of incorporation, Associate | Guinea |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Guinea [member] | Ordinary shares [Member] | Guinea, Francs | Simfer S.A. [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Investments In Associates Subsidiaries And Join Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share class | FG / shares |  |  |  |  |  |  |  |  |  |  | FG 100,000 |  |  |  |  |  |  |  |
Effective Group % ownership | 45.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company of operation, Subsidiary | SIMFER S.A. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share class | FG / shares |  |  |  |  |  |  |  |  |  |  | FG 100,000 |  |  |  |  |  |  |  |
% of share class held by Group companies | 85.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office address | Résidence Dolphine1 – Coleah Corniche Sud, Commune de Matam, BP 848, Conakry, BP 848, Guinea |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of incorporation, Associate | Guinea |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Aruba [member] | Common shares [member] | US Dollars [Member] | THR Aruba Holdings LLC A.V.V [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Investments In Associates Subsidiaries And Join Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share class | $ 1.00 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Effective Group % ownership | 50.80% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company of operation, Subsidiary | THR Aruba Holdings LLC A.V.V. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share class | $ 1.00 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% of share class held by Group companies | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office address | IMC International Management Trust Company N.V.,L.G.Smith Blvd. 62, Miramar Building, Oranjestad, Aruba |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of incorporation, Associate | Aruba |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Alufluor Ab | SWEDEN | Ordinary shares [Member] | Sweden, Kronor |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Investments In Associates Subsidiaries And Join Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share class | kr / shares |  |  |  |  |  |  |  |  |  |  |  |  |  | kr 1,000.00 |  |  |  |  |
Effective Group % ownership | 50.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company of operation, Subsidiary | Alufluor AB |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of incorporation, Subsidiary | Sweden |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share class | kr / shares |  |  |  |  |  |  |  |  |  |  |  |  |  | kr 1,000.00 |  |  |  |  |
% of share class held by Group companies | 50.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office address | Industrigatan 70, Box 902, S-25109, Helsingborg, Sweden |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Aluminerie De Becancour Inc [member] | Canada [member] | Ordinary shares [Member] | Canada, Dollars [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Investments In Associates Subsidiaries And Join Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share class |  |  |  | 1.00 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Effective Group % ownership | 25.20% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company of operation, Subsidiary | Aluminerie De Becancour, Inc |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of incorporation, Subsidiary | Canada |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share class |  |  |  | 1.00 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% of share class held by Group companies | 50.10% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office address | 5555 Pierre Thibault Street, PO 30, Becancour, Quebec G0X 1B, Canada |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Aluminerie Alouette Inc. [member] | Canada [member] | Ordinary shares [Member] | Canada, Dollars [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Investments In Associates Subsidiaries And Join Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Effective Group % ownership | 40.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company of operation, Subsidiary | Aluminerie Alouette Inc |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of incorporation, Subsidiary | Canada |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% of share class held by Group companies | 40.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office address | 400, Chemin de la Pointe-Noire, C.P. 1650, Sept-Îles Québec G4R 5M9, Canada |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Aluminium and chemie rotterdam b v [member] | NETHERLANDS | Ordinary shares [Member] | Euro Member Countries, Euro |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Investments In Associates Subsidiaries And Join Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share class | € / shares |  |  |  |  | 4,555 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Effective Group % ownership | 65.80% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company of operation, Subsidiary | Aluminium & Chemie Rotterdam B.V. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of incorporation, Subsidiary | Netherlands |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share class | € / shares |  |  |  |  | 4,555 |  |  |  |  |  |  |  |  |  |  |  |  |  |
% of share class held by Group companies | 65.80% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office address | Oude Maasweg 80, NL-3197 KJ, Botlek, Rotterdam, The Netherlands |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Asia Gold Mongolia LLC [member] | Mongolia [Member] | Common shares [member] | Mongolia, Tugriks |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Investments In Associates Subsidiaries And Join Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share class | ₮ / shares |  |  |  |  |  |  |  |  |  |  |  | 1,250.00 |  |  |  |  |  |  |
Effective Group % ownership | 50.70% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company of operation, Subsidiary | Asia Gold Mongolia LLC |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of incorporation, Subsidiary | Mongolia |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share class | ₮ / shares |  |  |  |  |  |  |  |  |  |  |  | 1,250.00 |  |  |  |  |  |  |
% of share class held by Group companies | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office address | Suite 1302, F13, Monnis Tower, Chingis Avenue-15, 1st Khoroo, Sukhbaatar district, Ulaanbaatar, 14240, Mongolia |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Asia Naran Bulag LLC [member] | Mongolia [Member] | Common shares [member] | Mongolia, Tugriks |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Investments In Associates Subsidiaries And Join Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share class | ₮ / shares |  |  |  |  |  |  |  |  |  |  |  | 1,000.00 |  |  |  |  |  |  |
Effective Group % ownership | 50.70% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company of operation, Subsidiary | Asia Naran Bulag LLC |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of incorporation, Subsidiary | Mongolia |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share class | ₮ / shares |  |  |  |  |  |  |  |  |  |  |  | 1,000.00 |  |  |  |  |  |  |
% of share class held by Group companies | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office address | Suite 1302, F13, Monnis Tower, Chingis Avenue-15, 1st Khoroo, Sukhbaatar district, Ulaanbaatar, 14240, Mongolia |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Beasley River Marketing Pty Ltd | Australia [member] | A Class Shares | Australian Dollars [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Investments In Associates Subsidiaries And Join Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Effective Group % ownership | 53.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company of operation, Subsidiary | Beasley River Marketing Pty Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of incorporation, Subsidiary | Australia |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% of share class held by Group companies | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office address | Level 18 Central Park, 152-158 St. Georges Terrace, Perth WA 6000, Australia |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Beasley River Marketing Pty Ltd | Australia [member] | Class B Shares | Australian Dollars [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Investments In Associates Subsidiaries And Join Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Effective Group % ownership | 53.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company of operation, Subsidiary | Beasley River Marketing Pty Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of incorporation, Subsidiary | Australia |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% of share class held by Group companies | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office address | Level 18 Central Park, 152-158 St. Georges Terrace, Perth WA 6000, Australia |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Balkhash Saryshagan LLP [member] | Kazakhstan [member] | Kazakhstan, Tenge |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Investments In Associates Subsidiaries And Join Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Effective Group % ownership | 75.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company of operation, Subsidiary | Balkhash Saryshagan LLP |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of incorporation, Subsidiary | Kazakhstan |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office address | Dostyk 310/G, Almaty, 050020, Kazakhstan |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Bektau B V | NETHERLANDS | Ordinary shares [Member] | Euro Member Countries, Euro |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Investments In Associates Subsidiaries And Join Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share class | € / shares |  |  |  |  | 200.00 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Effective Group % ownership | 75.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company of operation, Subsidiary | Bektau B.V. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of incorporation, Subsidiary | Netherlands |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share class | € / shares |  |  |  |  | 200.00 |  |  |  |  |  |  |  |  |  |  |  |  |  |
% of share class held by Group companies | 75.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office address | Welplaatweg 104, 3197 KS , Botlek-Rotterdam, The Netherlands, Netherlands |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Blair athol coal pty ltd [member] | Australia [member] | Ordinary shares [Member] | Australian Dollars [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Investments In Associates Subsidiaries And Join Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Effective Group % ownership | 71.20% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company of operation, Subsidiary | Blair Athol Coal Pty. Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of incorporation, Subsidiary | Australia |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% of share class held by Group companies | 57.20% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office address | 123 Albert Street, Brisbane QLD 4000, Australia |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Boyne Smelters Limited [member] | Australia [member] | A one class shares [member] | Australian Dollars [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Investments In Associates Subsidiaries And Join Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Effective Group % ownership | 59.40% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company of operation, Subsidiary | Boyne Smelters Limited |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of incorporation, Subsidiary | Australia |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% of share class held by Group companies | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office address | 123 Albert Street, Brisbane QLD 4000, Australia |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Boyne Smelters Limited [member] | Australia [member] | A two class shares [member] | Australian Dollars [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Investments In Associates Subsidiaries And Join Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Effective Group % ownership | 59.40% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company of operation, Subsidiary | Boyne Smelters Limited |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of incorporation, Subsidiary | Australia |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% of share class held by Group companies | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office address | 123 Albert Street, Brisbane QLD 4000, Australia |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Boyne Smelters Limited [member] | Australia [member] | B one class shares [member] | Australian Dollars [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Investments In Associates Subsidiaries And Join Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Effective Group % ownership | 59.40% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company of operation, Subsidiary | Boyne Smelters Limited |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of incorporation, Subsidiary | Australia |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% of share class held by Group companies | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office address | 123 Albert Street, Brisbane QLD 4000, Australia |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Canpacific potash inc [member] | Canada [member] | Canada, Dollars [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Investments In Associates Subsidiaries And Join Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Effective Group % ownership | 32.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company of operation, Subsidiary | CanPacific Potash Inc. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of incorporation, Subsidiary | Canada |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office address | c/o McKercher LLP, 374 Third Avenue South, Saskatoon SK S7K1M5, Canada |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Carol Lake Company Ltd [member] | Canada [member] | Ordinary shares [Member] | Canada, Dollars [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Investments In Associates Subsidiaries And Join Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share class |  |  |  | 100.00 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Effective Group % ownership | 58.70% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company of operation, Subsidiary | Carol Lake Company Ltd. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of incorporation, Subsidiary | Canada |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share class |  |  |  | 100.00 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% of share class held by Group companies | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office address | 400-1190 Avenue des Canadiens-de-Montréal, Montréal Québec H3B 0E3, Canada |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Chinalco rio tinto exploration co Ltd [member] | China [member] | Ordinary shares [Member] | China, Yuan Renminbi |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Investments In Associates Subsidiaries And Join Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share class | ¥ / shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  | ¥ 1.00 |  |  |  |
Effective Group % ownership | 49.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company of operation, Subsidiary | Chinalco Rio Tinto Exploration Co. Ltd (in liquidation) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of incorporation, Subsidiary | China |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share class | ¥ / shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  | ¥ 1.00 |  |  |  |
% of share class held by Group companies | 49.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office address | Unit 402, China Resources Building, No. 8 Jianguomenbei Avenue, Dong Cheng District, Beijing, 100005 P.R., China |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Chlor Alkali Unit Pte Ltd [member] | Singapore [member] | Ordinary shares [Member] | Singapore, Dollars |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Investments In Associates Subsidiaries And Join Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share class |  |  |  |  |  |  | $ 1.00 |  |  |  |  |  |  |  |  |  |  |  |
Effective Group % ownership | 68.40% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company of operation, Subsidiary | Chlor Alkali Unit Pte Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of incorporation, Subsidiary | Singapore |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share class |  |  |  |  |  |  | 1.00 |  |  |  |  |  |  |  |  |  |  |  |
% of share class held by Group companies | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office address | 12 Marina Boulevard, #20-01 Marina Bay Financial Centre Tower 3, Singapore, 018982, Singapore |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Chlor Alkali Unit Pte Ltd [member] | Singapore [member] | Ordinary shares [Member] | US Dollars [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Investments In Associates Subsidiaries And Join Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share class |  |  |  |  |  |  | 1.00 |  |  |  |  |  |  |  |  |  |  |  |
Effective Group % ownership | 68.40% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company of operation, Subsidiary | Chlor Alkali Unit Pte Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of incorporation, Subsidiary | Singapore |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share class |  |  |  |  |  |  | $ 1.00 |  |  |  |  |  |  |  |  |  |  |  |
% of share class held by Group companies | 68.40% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office address | 12 Marina Boulevard, #20-01 Marina Bay Financial Centre Tower 3, Singapore, 018982, Singapore |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Corporation De Peche Ste Marguerite Inc | Canada [member] | Ordinary shares [Member] | Canada, Dollars [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Investments In Associates Subsidiaries And Join Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share class |  |  |  | 10.00 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Effective Group % ownership | 96.80% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company of operation, Subsidiary | Corporation De Peche Ste-Marguerite Inc |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of incorporation, Subsidiary | Canada |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share class |  |  |  | 10.00 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% of share class held by Group companies | 96.80% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office address | 400-1190 Avenue des Canadiens-de-Montréal, Montréal Québec H3B 0E3, Canada |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Dalrymple Bay Coal Terminal Pty Ltd | Australia [member] | Ordinary shares [Member] | Australian Dollars [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Investments In Associates Subsidiaries And Join Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Effective Group % ownership | 22.80% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company of operation, Subsidiary | Dalrymple Bay Coal Terminal Pty Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of incorporation, Subsidiary | Australia |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% of share class held by Group companies | 32.10% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office address | Martin Armstrong Drive, Hay Point via Mackay QLD 4740, Australia |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Dampier Salt Limited [member] | Ordinary shares [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Investments In Associates Subsidiaries And Join Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company of operation, Subsidiary | Dampier Salt Limited |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of incorporation, Subsidiary | Australia |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Dampier Salt Limited [member] | Australia [member] | Ordinary shares [Member] | Australian Dollars [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Investments In Associates Subsidiaries And Join Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share class |  |  | $ 1.00257 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 1.88
Effective Group % ownership | 68.40% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company of operation, Subsidiary | Dampier Salt Limited |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of incorporation, Subsidiary | Australia |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share class |  |  | $ 1.00257 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 1.88
% of share class held by Group companies | 68.40% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office address | Level 18 Central Park, 152-158 St. Georges Terrace, Perth WA 6000, Australia |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Enarotali gold project limited [member] | JERSEY | Ordinary shares [Member] | United Kingdom, Pounds |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Investments In Associates Subsidiaries And Join Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share class | £ / shares |  | 0.001 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Effective Group % ownership | 25.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company of operation, Subsidiary | Enarotali Gold Project Limited |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of incorporation, Subsidiary | Jersey |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share class | £ / shares |  | £ 0.001 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% of share class held by Group companies | 25.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office address | 13 Castle Street, St Helier, Jersey JE4 5UT, Jersey |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Energy Resources of Australia Limited [Member] | Ordinary shares [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Investments In Associates Subsidiaries And Join Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company of operation, Subsidiary | Energy Resources of Australia Limited |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of incorporation, Subsidiary | Australia |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Energy Resources of Australia Limited [Member] | Australia [member] | A Class Ordinary Shares | Australian Dollars [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Investments In Associates Subsidiaries And Join Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Effective Group % ownership | 68.40% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company of operation, Subsidiary | Energy Resources of Australia Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of incorporation, Subsidiary | Australia |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% of share class held by Group companies | 68.40% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office address | C/- Mallesons Stephen Jacques, 60 Marcus Clarke Street, Canberra ACT, Australia |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fabrica de plasticos mycsa sa [member] | VENEZUELA | Common shares [member] | Venezuelan bol?var fuerte |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Investments In Associates Subsidiaries And Join Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share class | / shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1.00 |  |  |
Effective Group % ownership | 49.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company of operation, Subsidiary | Fabrica De Plasticos Mycsa, S.A. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of incorporation, Subsidiary | Bolivarian Republic of Venezuela |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share class | / shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1.00 |  |  |
% of share class held by Group companies | 49.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office address | Urbanización Industrial San Ignacio, parcela 2-A, vía San Pedro, Los Teques, Estado Miranda, Venezuela |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Global hubco bv [member] | NETHERLANDS | Ordinary shares [Member] | Euro Member Countries, Euro |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Investments In Associates Subsidiaries And Join Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share class | € / shares |  |  |  |  | 1.00 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Effective Group % ownership | 33.30% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company of operation, Subsidiary | Global Hubco BV |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of incorporation, Subsidiary | Netherlands |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share class | € / shares |  |  |  |  | € 1.00 |  |  |  |  |  |  |  |  |  |  |  |  |  |
% of share class held by Group companies | 33.30% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office address | c/o TMF Netherlands B.V., Luna Arena, Herikerbergweg 238, 1101, CM Amsterdam Zuidoost, Netherlands |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gulf Power Company La Compagnie Gulf Power [member] | Canada [member] | Ordinary shares [Member] | Canada, Dollars [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Investments In Associates Subsidiaries And Join Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share class |  |  |  | 100.00 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Effective Group % ownership | 58.70% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company of operation, Subsidiary | Gulf Power Company/La Compagnie Gulf Power |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of incorporation, Subsidiary | Canada |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share class |  |  |  | $ 100.00 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% of share class held by Group companies | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office address | 400-1190 Avenue des Canadiens-de-Montréal, Montréal Québec H3B 0E3, Canada |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Hail Creek Marketing Pty Ltd [member] | Australia [member] | Ordinary shares [Member] | Australian Dollars [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Investments In Associates Subsidiaries And Join Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Effective Group % ownership | 82.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company of operation, Subsidiary | Hail Creek Marketing Pty Ltd; |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of incorporation, Subsidiary | Australia |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% of share class held by Group companies | 82.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office address | 123 Albert Street, Brisbane QLD 4000, Australia |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Half Tide Marine Pty Ltd | Australia [member] | Ordinary shares [Member] | Australian Dollars [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Investments In Associates Subsidiaries And Join Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Effective Group % ownership | 34.60% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company of operation, Subsidiary | Half-Tide Marine Pty Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of incorporation, Subsidiary | Australia |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% of share class held by Group companies | 48.60% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office address | DBCT MS F283, Martin Armstrong Drive, Hay Point, QLD 4740, Australia |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Halco (Mining) Inc [member] | United States [member] | Ordinary shares [Member] | US Dollars [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Investments In Associates Subsidiaries And Join Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share class | $ 100.00 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Effective Group % ownership | 45.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company of operation, Subsidiary | Halco (Mining) Inc |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of incorporation, Subsidiary | United States |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share class | $ 100.00 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% of share class held by Group companies | 45.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office address | The Prentice-Hall Corporation System, Inc., 2711 Centerville Road, Suite 400, Willmington DE 19808, United States |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Heruga Exploration L L C | Mongolia [Member] | Common shares [member] | Mongolia, Tugriks |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Investments In Associates Subsidiaries And Join Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share class | ₮ / shares |  |  |  |  |  |  |  |  |  |  |  | 12,500 |  |  |  |  |  |  |
Effective Group % ownership | 50.80% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company of operation, Subsidiary | Heruga Exploration LLC |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of incorporation, Subsidiary | Mongolia |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share class | ₮ / shares |  |  |  |  |  |  |  |  |  |  |  | ₮ 12,500 |  |  |  |  |  |  |
% of share class held by Group companies | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office address | Suite 1302, F13, Monnis Tower, Chingis Avenue-15, 1st Khoroo, Sukhbaatar district, Ulaanbaatar, 14240, Mongolia |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Hope Downs Marketing Company Pty Ltd [member] | Australia [member] | A Class Shares | Australian Dollars [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Investments In Associates Subsidiaries And Join Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Effective Group % ownership | 50.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company of operation, Subsidiary | Hope Downs Marketing Company Pty Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of incorporation, Subsidiary | Australia |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% of share class held by Group companies | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office address | Level 18 Central Park, 152-158 St. Georges Terrace, Perth WA 6000, Australia |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Hydrogen energy international llc [member] | United States [member] | US Dollars [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Investments In Associates Subsidiaries And Join Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Effective Group % ownership | 50.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company of operation, Subsidiary | Hydrogen Energy International LLC |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of incorporation, Subsidiary | United States |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office address | 1209 Orange Street, Wilmington, New Castle, Delaware, U.S.A. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
IAL Holdings Singapore Pte Ltd [member] | Singapore [member] | Ordinary shares [Member] | US Dollars [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Investments In Associates Subsidiaries And Join Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Effective Group % ownership | 57.80% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company of operation, Subsidiary | IAL Holdings Singapore Pte Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of incorporation, Subsidiary | Singapore |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% of share class held by Group companies | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office address | 77 Robinson Road, #13-00, Robinson 77, 068896, Singapore |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Iron Ore Company of Canada [member] | Common shares [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Investments In Associates Subsidiaries And Join Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company of operation, Subsidiary | Iron Ore Company of Canada |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of incorporation, Subsidiary | Canada |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Iron Ore Company of Canada [member] | United States [member] | Series B Share [member] | US Dollars [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Investments In Associates Subsidiaries And Join Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share class | $ 1,000.00 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Effective Group % ownership | 58.70% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company of operation, Subsidiary | Iron Ore Company of Canada |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of incorporation, Subsidiary | United States |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share class | $ 1,000.00 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% of share class held by Group companies | 91.40% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office address | 1209 Orange Street, Wilmington, Delaware 19801, U.S.A. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Iron Ore Company of Canada [member] | United States [member] | Series G Share [member] | US Dollars [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Investments In Associates Subsidiaries And Join Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share class | $ 1,000.00 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Effective Group % ownership | 58.70% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company of operation, Subsidiary | Iron Ore Company of Canada |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of incorporation, Subsidiary | United States |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share class | $ 1,000.00 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% of share class held by Group companies | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office address | 1209 Orange Street, Wilmington, Delaware 19801, U.S.A. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Iron Ore Company of Canada [member] | United States [member] | Series F Shares [member] | US Dollars [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Investments In Associates Subsidiaries And Join Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share class | $ 1,000.00 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Effective Group % ownership | 58.70% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company of operation, Subsidiary | Iron Ore Company of Canada |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of incorporation, Subsidiary | United States |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share class | $ 1,000.00 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% of share class held by Group companies | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office address | 1209 Orange Street, Wilmington, Delaware 19801, U.S.A. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Korgantas LLP [member] | Kazakhstan [member] | Subsidiaries [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Investments In Associates Subsidiaries And Join Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Effective Group % ownership | 75.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company of operation, Associate | Korgantas LLP |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of incorporation, Associate | Kazakhstan |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office address | Dostyk 310/G, Almaty, 050020, Kazakhstan |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Thr Mines Services Co Ltd | Canada [member] | Common shares [member] | Canada, Dollars [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Investments In Associates Subsidiaries And Join Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Effective Group % ownership | 50.80% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company of operation, Subsidiary | THR Mines Services Co. Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of incorporation, Subsidiary | Canada |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% of share class held by Group companies | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office address | Lackowicz Shier & Hoffman Barristers & Solicitors, 300-204 Black Street, Whitehorse YT Y1A 2M9, Canada |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Thr Oyu Tolgoi Ltd | Virgin Islands, British [member] | Ordinary shares [Member] | US Dollars [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Investments In Associates Subsidiaries And Join Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share class | $ 1.00 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Effective Group % ownership | 50.80% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company of operation, Subsidiary | THR OYU TOLGOI LTD |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of incorporation, Subsidiary | British Virgin Islands |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share class | $ 1.00 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% of share class held by Group companies | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office address | Midocean Chambers, Road Town, Tortola, Virgin Islands, British |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Thr Ulaan Pte Ltd | Singapore [member] | Ordinary shares [Member] | US Dollars [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Investments In Associates Subsidiaries And Join Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Effective Group % ownership | 50.80% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company of operation, Subsidiary | THR Ulaan Pte. Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of incorporation, Subsidiary | Singapore |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% of share class held by Group companies | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office address | 77 Robinson Road, #13-00, Robinson 77, 068896, Singapore |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Tisand Proprietary Limited | SOUTH AFRICA | A Ordinary Shares | South Africa, Rand |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Investments In Associates Subsidiaries And Join Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share class | R / shares |  |  |  |  |  |  |  |  |  | 1.00 |  |  |  |  |  |  |  |  |
Effective Group % ownership | 74.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company of operation, Subsidiary | Tisand (Proprietary) Limited |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of incorporation, Subsidiary | South Africa |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share class | R / shares |  |  |  |  |  |  |  |  |  | 1.00 |  |  |  |  |  |  |  |  |
% of share class held by Group companies | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office address | The Farm RBM, Number 16317, KwaZulu-Natal, South Africa |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Tisand Proprietary Limited | SOUTH AFRICA | B ordinary shares [member] | South Africa, Rand |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Investments In Associates Subsidiaries And Join Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share class | R / shares |  |  |  |  |  |  |  |  |  | 1.00 |  |  |  |  |  |  |  |  |
Effective Group % ownership | 74.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company of operation, Subsidiary | Tisand (Proprietary) Limited |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of incorporation, Subsidiary | South Africa |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share class | R / shares |  |  |  |  |  |  |  |  |  | 1.00 |  |  |  |  |  |  |  |  |
% of share class held by Group companies | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office address | The Farm RBM, Number 16317, KwaZulu-Natal, South Africa |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Tisand Proprietary Limited | SOUTH AFRICA | Cumulative Preference Shares | South Africa, Rand |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Investments In Associates Subsidiaries And Join Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share class | R / shares |  |  |  |  |  |  |  |  |  | 1,000.00 |  |  |  |  |  |  |  |  |
Effective Group % ownership | 74.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company of operation, Subsidiary | Tisand (Proprietary) Limited |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of incorporation, Subsidiary | South Africa |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share class | R / shares |  |  |  |  |  |  |  |  |  | 1,000.00 |  |  |  |  |  |  |  |  |
% of share class held by Group companies | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office address | The Farm RBM, Number 16317, KwaZulu-Natal, South Africa |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Tomago Aluminium Company Pty Limited | Australia [member] | Ordinary shares [Member] | Australian Dollars [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Investments In Associates Subsidiaries And Join Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Effective Group % ownership | 51.60% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company of operation, Subsidiary | Tomago Aluminium Company Pty Limited |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of incorporation, Subsidiary | Australia |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% of share class held by Group companies | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office address | 638 Tomago Road, Tomago, NSW 2322, Australia |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Turquoise Hill Beijing Services Company Ltd | China [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Investments In Associates Subsidiaries And Join Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Effective Group % ownership | 50.80% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company of operation, Subsidiary | Turquoise Hill (Beijing) Services Company Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of incorporation, Subsidiary | China |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office address | Room 2913, Cameo Center, No.16 GuangShun South Street, WangJing ChaoYang District, Beijing China. 100102 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Turquoise Hill Netherlands Cooperatief U A | NETHERLANDS | C O O P Shares | US Dollars [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Investments In Associates Subsidiaries And Join Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Effective Group % ownership | 50.80% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company of operation, Subsidiary | Turquoise Hill Netherlands Cooperatief U.A |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of incorporation, Subsidiary | Netherlands |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% of share class held by Group companies | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office address | Prins Bernhardplein 200, 1097 JB Amsterdam, The Netherlands |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Turquoise Hill Resources Ltd [member] | Canada [member] | Common shares [member] | Canada, Dollars [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Investments In Associates Subsidiaries And Join Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Effective Group % ownership | 50.80% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company of operation, Subsidiary | Turquoise Hill Resources Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of incorporation, Subsidiary | Canada |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% of share class held by Group companies | 50.80% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office address | 300-204 Black Street, Whitehorse Yukon Territories Y1A 2M9, Canada |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Turquoise Hill Resources Philippines Inc | PHILIPPINES | Common shares [member] | Philippines, Pesos |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Investments In Associates Subsidiaries And Join Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share class | ₱ / shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 100.00 |  |
Effective Group % ownership | 50.80% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company of operation, Subsidiary | Turquoise Hill Resources Philippines Inc |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of incorporation, Subsidiary | Philippines |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share class | ₱ / shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | ₱ 100.00 |  |
% of share class held by Group companies | 99.90% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office address | Romulo Mabanta Buenaventura Sayoc & De Los Angeles, 21st Floor, Philamlife Tower, 8767 Paswode Roxas, Makati City, 1226, Philippines |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Turquoise Hill Resources Singapore Pte Ltd | Singapore [member] | Common shares [member] | Singapore, Dollars |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Investments In Associates Subsidiaries And Join Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share class | $ 1.00 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Effective Group % ownership | 50.80% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company of operation, Subsidiary | Turquoise Hill Resources Singapore Pte Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of incorporation, Subsidiary | Singapore |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share class | $ 1.00 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% of share class held by Group companies | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office address | 1A International Business Park, 609933, Singapore |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Twin Falls Power Corporation Ltd | Canada [member] | Class B Shares | Canada, Dollars [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Investments In Associates Subsidiaries And Join Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Effective Group % ownership | 34.253% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company of operation, Subsidiary | Twin Falls Power Corporation Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of incorporation, Subsidiary | Canada |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% of share class held by Group companies | 74.40% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office address | Hydro Place, P.O. Box 12500, St-John’s Newfoundand and Labrador A1B 3T5, Canada |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Yalleen Pastoral Co Pty Ltd | Australia [member] | Ordinary shares [Member] | Australian Dollars [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Investments In Associates Subsidiaries And Join Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Effective Group % ownership | 56.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company of operation, Subsidiary | Yalleen Pastoral Co Pty Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of incorporation, Subsidiary | Australia |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
% of share class held by Group companies | 63.70% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office address | Level 18 Central Park, 152-158 St. Georges Terrace, Perth WA 6000, Australia |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Zululand Titanium Pty Ltd | SOUTH AFRICA | Ordinary shares [Member] | South Africa, Rand |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Investments In Associates Subsidiaries And Join Ventures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share class | R / shares |  |  |  |  |  |  |  |  |  | 1.00 |  |  |  |  |  |  |  |  |
Effective Group % ownership | 74.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company of operation, Subsidiary | Zululand Titanium (Pty) Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Country of incorporation, Subsidiary | South Africa |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share class | R / shares |  |  |  |  |  |  |  |  |  | R 1.00 |  |  |  |  |  |  |  |  |
% of share class held by Group companies | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Registered office address | The Farm RBM, Number 16317, KwaZulu-Natal, South Africa |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

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