Restructuring and Employee Severance (Activity Related to Restructuring and Employee Severance Costs) (Details) - USD ($) $ in Millions	3 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Restructuring Charges [Abstract]
Employee-related costs	$ 7	$ 6
Facility exit and other costs	2	6
Total restructuring and employee severance	$ 9	$ 12