Fair Value - Schedule of Financial Assets and Liabilities Carried at Fair Value on a Recurring Basis (Detail) - USD ($) $ in Millions	Sep. 30, 2023	Jun. 30, 2023
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Investments in equity securities	$ 727	$ 884
Redeemable noncontrolling interests	(228)	(213)
Fair value measurements recurring
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Investments in equity securities	727	884
Redeemable noncontrolling interests	(228)	(213)
Total	499	671
Fair value measurements recurring | Level 1
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Investments in equity securities	727	884
Redeemable noncontrolling interests	0	0
Total	727	884
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	(228)	(213)
Total	$ (228)	$ (213)