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Inventories (Details) - USD ($)
$ in Millions
Mar. 30, 2018
Jun. 30, 2017
Inventory [Line Items]    
Finished products $ 101 $ 96
Work in process 113 96
Raw materials and supplies 205 195
Inventories 963 841
Inventories (Textuals)    
Progress payments 89 90
Fixed Price Contract    
Inventory [Line Items]    
Unbilled costs and accrued earnings on fixed-price contracts $ 544 $ 454