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Inventories (Details) - USD ($)
$ in Millions
Mar. 31, 2017
Jul. 01, 2016
Inventory [Line Items]    
Finished products $ 96 $ 129
Work in process 118 110
Raw materials and supplies 201 192
Inventories 894 867
Inventories (Textuals)    
Progress payments 93 91
Fixed Price Contract    
Inventory [Line Items]    
Unbilled costs and accrued earnings on fixed-price contracts $ 479 $ 436