Restructuring and Employee Severance (Activity Related to Restructuring and Employee Severance Costs) (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2020	Mar. 31, 2019
Restructuring Charges [Abstract]
Employee-related costs	$ (15)	$ 29	$ 47	$ 70
Facility Exit and Other Costs	9	24	33	27
Total restructuring and employee severance	$ (6)	$ 53	$ 80	$ 97

Amount of expenses for special or contractual termination benefits provided to current employees involuntarily terminated under a benefit arrangement associated exit or disposal activities pursuant to an authorized plan. Excludes expenses related to one-time termination benefits, a discontinued operation or an asset retirement obligation.

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