Related party transactions - Transactions between associates and joint ventures (Details) - USD ($) $ in Millions	12 Months Ended
Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2023
Income statement items
Sales	$ 10	$ 14	$ 13
Purchases	65	73	16
Balance sheet items
Group payables	2	2	3
Group receivables	1	2	2
Loans receivable	37	355	254
Cash flow items
Loans and equity contributions, net	$ 84	$ 134	$ 112

Cash flow items for related party transactions.

No definition available.

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- Definition

Loans and equity contributions related party transactions net.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The loans receivable resulting from related party transactions. [Refer: Related parties [member]]

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The amounts payable resulting from related party transactions. [Refer: Total for all related parties [member]]

+ References

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The amounts receivable resulting from related party transactions. [Refer: Total for all related parties [member]]

+ References

+ Details

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Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- References

No definition available.

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Balance Type:	na
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- Definition

The amount of goods purchased by the entity in related party transactions. [Refer: Total for all related parties [member]]

+ References

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-Name IAS
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- References

No definition available.

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- Definition

The amount of revenue arising from the sale of goods in related party transactions. [Refer: Revenue; Total for all related parties [member]]

+ References

+ Details

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Balance Type:	credit
Period Type:	duration