Restructuring, Impairment and Other Corporate Matters - Schedule of Changes in Restructuring Program Liabilities (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2024
Restructuring Reserve [Roll Forward]
Beginning balance	$ (15)	$ (17)	$ (84)
Additions and other			(13)
Additions	64	35	13
Additions	(40)
Payments	31	37	80
Ending balance	(24)	(15)	(17)
One time termination benefits
Restructuring Reserve [Roll Forward]
Beginning balance	(15)	(17)	(67)
Additions and other			(19)
Additions		35
Additions	(38)
Payments	31	37	69
Ending balance	(22)	(15)	(17)
Contract termination costs
Restructuring Reserve [Roll Forward]
Beginning balance	0	0	(17)
Additions and other			6
Additions		0
Additions	(2)
Payments	0	0	11
Ending balance	$ (2)	$ 0	$ 0