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Principal joint operations (Tables) | 12 Months Ended
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Dec. 31, 2019
Disclosure of joint operations [abstract] |
Summary of principle joint operations |
Company and country of incorporation/operation | Principal activities | Group interest (%)
Australia |  |
Tomago Aluminium Joint Venture | Aluminium smelting | 51.6
Gladstone Power Station | Power generation | 42.1
Hope Downs Joint Venture | Iron ore mining | 50
Queensland Alumina Limited(a) (b) | Alumina production | 80
Pilbara Iron arrangement | Infrastructure, corporate and mining services | (c)
New Zealand |  |
New Zealand Aluminium Smelters Limited(a) (b) | Aluminium smelting | 79.4
Canada |  |
Aluminerie Alouette Inc. | Aluminium production | 40
US |  |
Pechiney Reynolds Quebec Inc(b) (d) | Aluminium smelting | 50.2

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- Definition The disclosure of joint operations. [Refer: Joint operations [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 12 -IssueDate 2019-01-01 -Paragraph B4 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2019-en-r&anchor=para_B4_c&doctype=Appendix&subtype=B -URIDate 2019-03-27 + Details
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