Fair Value - Schedule of Financial Assets and Liabilities Carried at Fair Value on a Recurring Basis (Details) - USD ($) $ in Millions	Dec. 31, 2025	Jun. 30, 2025
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Investments in equity securities	$ 955	$ 1,249
Redeemable noncontrolling interests	(57)	(261)
Total	898	988
Level 1
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Investments in equity securities	955	1,249
Redeemable noncontrolling interests	0	0
Total	955	1,249
Level 2
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Investments in equity securities	0	0
Redeemable noncontrolling interests	0	0
Total	0	0
Level 3
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Investments in equity securities	0	0
Redeemable noncontrolling interests	(57)	(261)
Total	$ (57)	$ (261)