Basis of Presentation and Summary of Significant Accounting Policies (Components of Property and Equipment) (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2019
Property, Plant and Equipment [Line Items]
Total property and equipment, at cost	$ 5,588	$ 5,331
Accumulated depreciation and amortization	(3,228)	(2,965)
Property and equipment, net	2,360	2,366	$ 2,356
Land, building and improvements
Property, Plant and Equipment [Line Items]
Total property and equipment, at cost	2,359	2,185
Machinery and equipment
Property, Plant and Equipment [Line Items]
Total property and equipment, at cost	3,093	3,008
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Total property and equipment, at cost	$ 136	$ 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