Cost Of Contracts (Detail) - USD ($) $ in Millions	Jul. 03, 2016	Dec. 31, 2015
Contractors [Abstract]
Contract costs and estimated profits	$ 25,649	$ 20,742
Other contract costs	868	965
Costs in excess of billings on uncompleted contracts or programs, total	26,517	21,707
Advances and progress payments	(21,521)	(17,350)
Total contracts in process	$ 4,996	$ 4,357