Cost Of Contracts (Detail) (USD $) In Millions, unless otherwise specified	Jun. 29, 2014	Dec. 31, 2013
Contractors [Abstract]
Contract costs and estimated profits	$ 8,013	$ 7,961
Other contract costs	1,100	1,178
Costs in excess of billings on uncompleted contracts or programs, total	9,113	9,139
Advances and progress payments	(4,179)	(4,359)
Total contracts in process	$ 4,934	$ 4,780