Additional Financial Information - Schedule of Other Liabilities (Detail) - USD ($) $ in Millions	Sep. 30, 2024	Jun. 30, 2024
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Non-current operating lease liabilities	$ 861	$ 879
Accrued non-current pension/postretirement liabilities	277	276
Other non-current liabilities	218	211
Total other liabilities	$ 1,356	$ 1,366

Present value of lessee's discounted obligation for lease payments from operating lease, classified as noncurrent.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479041/842-20-45-1

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Amount of liabilities classified as other, due after one year or the normal operating cycle, if longer.

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Obligations not otherwise itemized or categorized in the footnotes to the financial statements that are expected to be paid after one year (or the normal operating cycle, if longer), from the balance sheet date.

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Amount of liability, recognized in statement of financial position, for defined benefit pension and other postretirement plans, classified as noncurrent.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
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Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Topic 715
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-Topic 715
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