Additional Financial Information - Schedule of Components of Other Non-current Assets (Details) - USD ($) $ in Millions	Jun. 30, 2026	Jun. 30, 2025
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Investments	$ 965	$ 1,621
Operating lease assets	$ 851	$ 814
Operating lease, right-of-use asset, statement of financial position	Total other non-current assets	Total other non-current assets
Inventories, net	$ 845	$ 742
Grantor Trust assets	244	246
Other	322	309
Total other non-current assets	3,227	3,732
Investments, fair value	$ 467	$ 1,249