Restructuring and Employee Severance (Activity Related to Restructuring and Employee Severance Costs) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2024	Dec. 31, 2023
Restructuring Charges [Abstract]
Employee-related costs	$ 3	$ 8	$ 19	$ 15
Facility Exit and Other Costs	6	20	14	38
Total restructuring and employee severance	$ 9	$ 28	$ 33	$ 53