Gains (Losses), Net of Tax, on Derivative Instruments Recognized in Consolidated Comprehensive Income Statements (Detail) - USD ($) $ in Millions	12 Months Ended
Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2023
Cash Flow Hedges \| Foreign Exchange Contracts
Derivative Instruments, Gain (Loss) [Line Items]
Included in effectiveness assessment	$ 77	$ (14)	$ 34

Amount, after tax and before reclassification, of gain (loss) from derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 220
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 11
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482790/220-10-45-11

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 220
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 10A
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482790/220-10-45-10A

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