Valuation and Qualifying Accounts (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2024
Allowance for credit losses
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance as of beginning of year	$ (50)	$ (44)	$ (44)
Additions	(17)	(9)	(8)
Utilization	6	3	5
Other	0	0	3
Balance as of end of year	(61)	(50)	(44)
Deferred tax valuation allowance
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance as of beginning of year	(140)	(119)	(72)
Additions	(7)	(15)	(52)
Utilization	10	1	3
Other	28	(7)	2
Balance as of end of year	$ (109)	$ (140)	$ (119)