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Contingent Liabilities - Summary of Contingent Liabilities (Detail) - USD ($) $ in Millions	Jun. 30, 2018	Jun. 30, 2017
Disclosure of contingent liabilities [Line Items]
Contingent liabilities	$ 3,503	$ 3,609
Associates and joint ventures [member]
Disclosure of contingent liabilities [Line Items]
Contingent liabilities	1,588	1,784
Subsidiaries and joint operations [member]
Disclosure of contingent liabilities [Line Items]
Contingent liabilities	$ 1,915	$ 1,825

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- Definition

Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table.

+ References

No definition available.

+ Details

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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 2017-01-01
-Paragraph 86
-Subparagraph a
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=37&date=2017-03-01&anchor=para_86_a&doctype=Standard
-URIDate 2017-03-09

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