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Investment in Joint Operations	12 Months Ended
	Jun. 30, 2019
Interest in Other Entities [Abstract]
Investment in Joint Operations	INVESTMENT IN JOINT OPERATIONS The group has a 50% interest in certain mining and exploration assets located in the Morobe province, PNG. Newcrest owns the remaining 50% interest in these assets. The asset in the joint arrangement is the Wafi-Golpu project. The joint arrangement is accounted for as a joint operation.

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Interest in Other Entities [Abstract]

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No definition available.

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The disclosure of joint operations. [Refer: Joint operations [member]]

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 12
-IssueDate 2018-01-01
-Paragraph B4
-Subparagraph c
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=12&date=2018-03-01&anchor=para_B4_c&doctype=Appendix&seq=2
-URIDate 2018-03-16

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