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Financial risk management - Fair values - Additional Information (Detail) - USD ($) $ in Millions	6 Months Ended
	Dec. 31, 2022	Jun. 30, 2022
Disclosure of detailed information about financial instruments [line items]
Transfer between fair value hierarchy categories	$ 0
Fixed interest rate not swapped to floating rate [member]
Disclosure of detailed information about financial instruments [line items]
Borrowings	534	$ 3,018
Fixed interest rate not swapped to floating rate [member] | At fair value [member]
Disclosure of detailed information about financial instruments [line items]
Borrowings	$ 548	$ 3,126

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- Definition

The amount of outstanding funds that the entity is obligated to repay.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2022-03-24
-Paragraph 55
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2022-en-r&anchor=para_55&doctype=Standard
-URIDate 2022-03-24

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