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Contingent Liabilities - Summary of Contingent Liabilities (Detail) - USD ($) $ in Millions | Jun. 30, 2019 | Jun. 30, 2018
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Disclosure of contingent liabilities [line items] |  |
Contingent liabilities | $ 3,443 | $ 3,503
Associates and joint ventures [member] |  |
Disclosure of contingent liabilities [line items] |  |
Contingent liabilities | 1,822 | 1,588
Subsidiaries and joint operations [member] |  |
Disclosure of contingent liabilities [line items] |  |
Contingent liabilities | $ 1,621 | $ 1,915

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- Definition The amount of the estimated financial effect of contingent liabilities. [Refer: Contingent liabilities [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 37 -IssueDate 2018-01-01 -Paragraph 86 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=37&date=2018-03-01&anchor=para_86_a&doctype=Standard -URIDate 2018-03-16 + Details
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