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Inventories (Details) - USD ($) $ in Millions	Dec. 29, 2018	Jul. 02, 2018	Dec. 30, 2017
Inventories
Finished goods	$ 1,662		$ 1,790
Work in process	1,356		2,238
Raw materials and components	800		804
Inventories, Gross	3,818		4,832
Progress payments			(682)
Total	3,818		4,150
Inventories by LIFO method	2,200		2,200
LIFO carrying value at current cost	457		$ 452
ASC 606
Inventories
Total	3,818
Effect of adoption of ASC 606
Inventories
Total	228
Effect of adoption of ASC 606 \| ASC 606
Inventories
Total	$ 199
Tools and Test Equipment \| Disposition of businesses
Inventories
Inventories		$ 100