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Included in (Loss)/Profit Before Royalties and Taxation - Schedule of Amounts Included in (Loss)/Profit Before Royalties and Taxation (Detail) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Disclosure of information about amounts included in profit before royalties and taxation [abstract] |  |  |
Operating lease charges | $ (2.3) | $ (2.4) | $ (2.8)
Profit on buy-back of notes | 0.0 | 0.0 | 17.7
Social contributions and sponsorships | (15.1) | (19.6) | (19.3)
Global compliance costs | 0.0 | 0.0 | (0.1)
Loss on sale of inventory | (8.9) | 0.0 | 0.0
Rehabilitation income - continuing operations | 0.9 | 13.5 | 9.7
Rehabilitation income - discontinued operations | 0.0 | 0.0 | 0.2
Restructuring costs | $ (113.9) | $ (9.2) | $ (11.7)

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- Definition Disclosure of information about amounts included in profit before royalties and taxation. + References No definition available. + Details
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- Definition The amount of expenses relating to global compliance costs. + References No definition available. + Details
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- Definition Loss on sale of inventory + References No definition available. + Details
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- Definition Profit loss on buyback of notes. + References No definition available. + Details
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- Definition Rehabilitation income and/or expenses attributable to continuing operations. + References No definition available. + Details
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- Definition Rehabilitation income and/or expenses attributable to discontinuing operations. + References No definition available. + Details
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- Definition The amount of expenses relating to social contributions and sponsorships. + References No definition available. + Details
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- Definition The amount of expense relating to restructuring. Restructuring is a programme that is planned and controlled by management and materially changes either the scope of a business undertaken by an entity or the manner in which that business is conducted. Such programmes include: (a) the sale or termination of a line of business; (b) closure of business locations in a country or region or the relocation of activities from one country or region to another; (c) changes in management structure; and (d) fundamental reorganisations that have a material effect on the nature and focus of the entity's operations. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2018-01-01 -Paragraph 98 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2018-03-01&anchor=para_98_b&doctype=Standard -URIDate 2018-03-16 + Details
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- Definition The portion of operating lease payments that the lessee is or can be required to make, excluding contingent rent, costs for services and taxes to be paid by, and reimbursed to, the lessor, together with any amounts guaranteed by the lessee or by a party related to the lessee recognised as an expense. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Note Expiry date 2019-01-01 -Name IAS -Number 17 -IssueDate 2018-01-01 -Paragraph 35 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=17&date=2018-03-02&anchor=para_35_c&doctype=Standard&book=b -URIDate 2018-03-16 + Details
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