Contracts In Process (Schedule Of Contracts In Process) (Details) (USD $) In Millions, unless otherwise specified	Apr. 01, 2012	Dec. 31, 2011
Contracts In Process [Abstract]
Contract costs and estimated profits	$ 19,010	$ 18,807
Other contract costs	990	959
Costs in excess of billings on uncompleted contracts or programs, total	20,000	19,766
Advances and progress payments	(15,071)	(14,598)
Total contracts in process	$ 4,929	$ 5,168