Basis of Presentation and Summary of Significant Accounting Policies (Components of Property and Equipment) (Details) $ in Millions	12 Months Ended
	Jun. 30, 2020 USD ($) segment	Jun. 30, 2019 USD ($)	Jun. 30, 2018 USD ($)
Property, Plant and Equipment [Line Items]
Long-term Debt, Weighted Average Interest Rate, at Point in Time	3.00%
Number of Operating Segments | segment	2
Total property and equipment, at cost	$ 5,331	$ 5,168
Accumulated depreciation and amortization	(2,965)	(2,812)
Property and equipment, net	2,366	2,356	$ 2,487
Land, building and improvements
Property, Plant and Equipment [Line Items]
Total property and equipment, at cost	2,185	1,992
Machinery and equipment
Property, Plant and Equipment [Line Items]
Total property and equipment, at cost	3,008	3,038
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Total property and equipment, at cost	$ 138	$ 138
Maximum | Building and Improvements
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	39 years
Maximum | Machinery and equipment
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	20 years
Maximum | Furniture and fixtures
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	7 years
Minimum | Building and Improvements
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	3 years
Minimum | Machinery and equipment
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	3 years
Minimum | Furniture and fixtures
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	3 years