Supply chain financing (Details) - USD ($) $ in Millions	3 Months Ended
Sep. 30, 2024	Sep. 30, 2023	Jun. 30, 2024
Payables and Accruals [Abstract]
Payable to suppliers who have elected to participate in the supply chain financing programs	$ 125		$ 116
Amounts settled through supply chain financing programs and paid to participating financial intermediaries	$ 107	$ 72

Amount of obligation for supplier finance program, classified as current.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 405
-SubTopic 50
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (b)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479468/405-50-50-3

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 405
-SubTopic 50
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479468/405-50-50-3

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 405
-SubTopic 50
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479468/405-50-50-4

Name:	us-gaap_SupplierFinanceProgramObligationCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant