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Contingent Liabilities - Summary of Contingent Liabilities (Detail) - USD ($) $ in Millions | Jun. 30, 2021 | Jun. 30, 2020
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Disclosure of contingent liabilities [line items] |  |
Contingent liabilities | $ 3,147 | $ 2,848
Associates and joint ventures [member] |  |
Disclosure of contingent liabilities [line items] |  |
Contingent liabilities | 1,532 | 1,314
Subsidiaries and joint operations [member] |  |
Disclosure of contingent liabilities [line items] |  |
Contingent liabilities | $ 1,615 | $ 1,534

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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 2020-01-01 -Paragraph 86 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=37&code=ifrs-tx-2020-en-r&anchor=para_86_a&doctype=Standard -URIDate 2020-01-01 + Details
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