Goodwill and Other Purchased Intangible Assets (Details 1) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Goodwill (Table Amounts)
Beginning balance	$ 12,431	$ 12,374
Businesses acquired, sold and other	7	57
Ending balance	12,438	12,431
Aerospace Systems
Goodwill (Table Amounts)
Beginning balance	3,758	3,801
Businesses acquired, sold and other	0	(43)
Ending balance	3,758	3,758
Electronic Systems
Goodwill (Table Amounts)
Beginning balance	2,410	2,400
Businesses acquired, sold and other	0	10
Ending balance	2,410	2,410
Information Systems
Goodwill (Table Amounts)
Beginning balance	5,287	5,248
Businesses acquired, sold and other	7	39
Ending balance	5,294	5,287
Technical Services
Goodwill (Table Amounts)
Beginning balance	976	925
Businesses acquired, sold and other	0	51
Ending balance	$ 976	$ 976