Fair Value - Schedule of Financial Assets and Liabilities Carried at Fair Value on a Recurring Basis (Detail) - USD ($) $ in Millions	Dec. 31, 2024	Jun. 30, 2024
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Investments in equity securities	$ 1,130	$ 797
Redeemable noncontrolling interests	(200)	(242)
Fair value measurements recurring
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Investments in equity securities	1,132	797
Redeemable noncontrolling interests	(200)	(242)
Total	932	555
Fair value measurements recurring | Level 1
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Investments in equity securities	1,132	797
Redeemable noncontrolling interests	0	0
Total	1,132	797
Fair value measurements recurring | 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
Fair value measurements recurring | Level 3
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Investments in equity securities	0	0
Redeemable noncontrolling interests	(200)	(242)
Total	$ (200)	$ (242)