Basis of Presentation and Summary of Significant Accounting Policies (Components of Property and Equipment) (Details) $ in Millions	12 Months Ended
	Jun. 30, 2019 USD ($) segment	Jun. 30, 2018 USD ($)	Jun. 30, 2017 USD ($)
Property, Plant and Equipment [Line Items]
Long-term Debt, Weighted Average Interest Rate, at Point in Time	5.00%
Number of Operating Segments | segment	2
Total property and equipment, at cost	$ 5,168	$ 5,260
Accumulated depreciation and amortization	(2,812)	(2,773)
Property and equipment, net	2,356	2,487	$ 1,879
Land, building and improvements
Property, Plant and Equipment [Line Items]
Total property and equipment, at cost	1,992	2,115
Machinery and equipment
Property, Plant and Equipment [Line Items]
Total property and equipment, at cost	3,038	3,006
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Total property and equipment, at cost	$ 138	$ 139
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