Restructuring and Employee Severance (Activity Related to Restructuring and Employee Severance Costs) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2023	Dec. 31, 2022
Restructuring Charges [Abstract]
Employee-related costs	$ 8	$ 10	$ 15	$ 29
Facility Exit and Other Costs	20	7	38	17
Total restructuring and employee severance	$ 28	$ 17	$ 53	$ 46