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Basis of Presentation and Summary of Significant Accounting Policies (Components of Property and Equipment) (Details)
$ in Millions
12 Months Ended
Jun. 30, 2018
USD ($)
segment
Jun. 30, 2017
USD ($)
Jun. 30, 2016
USD ($)
Property, Plant and Equipment [Line Items]      
Long-term Debt, Weighted Average Interest Rate, at Point in Time 4.00%    
Number of Operating Segments | segment 2    
Total property and equipment, at cost $ 5,260 $ 4,627  
Accumulated depreciation and amortization (2,773) (2,748)  
Property and equipment, net 2,487 1,879 $ 1,796
Land, building and improvements      
Property, Plant and Equipment [Line Items]      
Total property and equipment, at cost 2,115 1,637  
Machinery and equipment      
Property, Plant and Equipment [Line Items]      
Total property and equipment, at cost 3,006 2,860  
Furniture and fixtures      
Property, Plant and Equipment [Line Items]      
Total property and equipment, at cost $ 139 $ 130  
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