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Dividends - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Millions | 6 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Disclosure of dividends paid and proposed [line items] |  |  |
Final Proposed (not recognised as a liability at 31 December) |  | $ 85.9 | $ 78.1
Payments for dividends |  | $ 721 | $ 199
Proposed dividends [member] |  |  |
Disclosure of dividends paid and proposed [line items] |  |  |
Payments for dividends | $ 150 |  |

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- Definition The cash outflow for dividends paid by the entity, classified as financing activities. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 7 -IssueDate 2020-01-01 -Paragraph 31 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=7&code=ifrs-tx-2020-en-r&anchor=para_31&doctype=Standard -URIDate 2020-01-01 + Details
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- Definition The amount, per share, of dividends proposed or declared before financial statements were authorised for issue but not recognised as distribution to owners. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2020-01-01 -Paragraph 137 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_137_a&doctype=Standard -URIDate 2020-01-01 + Details
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- Definition Disclosure of dividends paid and proposed. + References No definition available. + Details
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- Details
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