Additional Financial Information - Schedule of Other, Net (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2023	Dec. 31, 2022
Other Income and Expenses [Line Items]
Remeasurement of equity securities	$ 13	$ (11)	$ (10)	$ (14)
Total Other, net	22	(6)	(13)	(24)
Nonoperating Income (Expense)
Other Income and Expenses [Line Items]
Remeasurement of equity securities	13	(11)	(10)	(14)
Dividends received from equity security investments	1	2	3	4
Gain on remeasurement of previously-held interest	0	0	4	0
Other	$ 8	$ 3	$ (10)	$ (14)