Additional Financial Information - Schedule of Components of Other Liabilities (Details) - USD ($) $ in Millions	Jun. 30, 2026	Jun. 30, 2025
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Non-current operating lease liabilities	$ 917	$ 822
Accrued non-current pension/postretirement liabilities	263	276
Other non-current liabilities	215	243
Total other liabilities	$ 1,395	$ 1,341

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

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
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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://www.xbrl.org/2009/role/commonPracticeRef
-Topic 210
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