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Tax - Deferred Tax - Additional Information (Detail) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018
Disclosure of income tax reconciliation [line items] |  |
Deferred tax assets recognized related to legal entities which suffered tax loss | $ 0 | $ 0
Uncertain tax positions included within deferred tax liability | 0 | 0
Uncertain tax positions offset from deferred tax asset | 0 | 0
Losses [member] |  |
Disclosure of income tax reconciliation [line items] |  |
Deferred tax asset recognised in respect of revenue losses | 27 | 35
Loans Notes [member] | 2025 [member] |  |
Disclosure of income tax reconciliation [line items] |  |
Deferred gains on loan notes |  | 0
Unprovided deferred tax on unremitted earnings [member] |  |
Disclosure of income tax reconciliation [line items] |  |
Unremitted earnings on which no deferred tax provided | $ 900 | $ 800

X
- Definition The aggregate amount of temporary differences associated with investments in subsidiaries, branches and associates and interests in joint arrangements, for which deferred tax liabilities have not been recognised as a result of satisfying both of the following conditions: (a) the parent, investor, joint venturer or joint operator is able to control the timing of the reversal of the temporary difference; and (b) it is probable that the temporary difference will not reverse in the foreseeable future. [Refer: Associates [member]; Subsidiaries [member]; Temporary differences [member]; Investments in subsidiaries] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 12 -IssueDate 2019-01-01 -Paragraph 81 -Subparagraph f -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=12&code=ifrs-tx-2019-en-r&anchor=para_81_f&doctype=Standard -URIDate 2019-03-27 + Details
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- Definition Deferred Tax Assets Gains on loan notes. + References No definition available. + Details
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- Definition Deferred tax assets losses recognised in profit loss. + References No definition available. + Details
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- Definition Deferred tax assets recognized related to legal entities which suffered tax loss. + References No definition available. + Details
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- Definition Disclosure of income tax reconciliation. + References No definition available. + Details
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- Definition Uncertain tax positions deferred liability. + References No definition available. + Details
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- Definition Uncertain tax positions offset against deferred asset. + References No definition available. + Details
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- Details
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- Details
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- Details
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- Details
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