Summary of Financial Information for Each Business Segment (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended										12 Months Ended
	Dec. 31, 2013		Sep. 29, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012		Sep. 30, 2012	Jun. 24, 2012	Mar. 25, 2012	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Segment Reporting Information [Line Items]
Total net sales	$ 11,533		$ 11,347	$ 11,408	$ 11,070	$ 12,099		$ 11,869	$ 11,921	$ 11,293	$ 45,358		$ 47,182		$ 46,499
Operating profit	834		1,254	1,298	1,119	1,061		1,137	1,192	1,044	4,505		4,434		4,020
FAS/CAS pension expense											(482)		(830)		(922)
Goodwill impairment charge	(195)										(195)	[1]
Severance charges	(171)				(30)						(201)	[2]	(48)	[2]	(136)	[2]
Stock-based compensation											(189)		(167)		(157)
Other, net											(180)		(104)		(46)
Total unallocated expenses, net											(1,247)		(1,149)		(1,261)
Total depreciation and amortization											990		988		1,008
Capitalized expenditures											836		942		987
Total assets	36,188	[3]				38,657	[3]				36,188	[3]	38,657	[3]
Total goodwill	10,348	[4]				10,370	[4]				10,348	[4]	10,370	[4]
Total customer advances and amounts in excess of costs incurred	6,349					6,503					6,349		6,503
Aeronautics
Segment Reporting Information [Line Items]
Severance charges													(25)		(49)
Information Systems & Global Solutions
Segment Reporting Information [Line Items]
Severance charges					(30)						(83)
Mission Systems and Training
Segment Reporting Information [Line Items]
Severance charges											(37)
Space Systems
Segment Reporting Information [Line Items]
Severance charges											(81)				(48)
Business segments
Segment Reporting Information [Line Items]
Operating profit											5,752		5,583		5,281
Total depreciation and amortization											883		877		903
Capitalized expenditures											765		802		904
Total assets	25,812	[5]				26,442	[5]				25,812	[5]	26,442	[5]
Business segments | Aeronautics
Segment Reporting Information [Line Items]
Total net sales											14,123		14,953		14,362
Operating profit											1,612		1,699		1,630
Total depreciation and amortization											318		311		345
Capitalized expenditures											271		271		361
Total assets	5,821	[5]				6,525	[5]				5,821	[5]	6,525	[5]
Total goodwill	146	[4]				146	[4]				146	[4]	146	[4]
Total customer advances and amounts in excess of costs incurred	2,433					2,382					2,433		2,382
Business segments | Information Systems & Global Solutions
Segment Reporting Information [Line Items]
Total net sales											8,367		8,846		9,381
Operating profit											759		808		874
Total depreciation and amortization											94		92		83
Capitalized expenditures											64		78		71
Total assets	5,798	[5]				5,664	[5]				5,798	[5]	5,664	[5]
Total goodwill	3,942	[4]				3,767	[4]				3,942	[4]	3,767	[4]
Total customer advances and amounts in excess of costs incurred	322					323					322		323
Business segments | Missiles and Fire Control
Segment Reporting Information [Line Items]
Total net sales											7,757		7,457		7,463
Operating profit											1,431		1,256		1,069
Total depreciation and amortization											98		104		102
Capitalized expenditures											128		128		119
Total assets	4,159	[5]				4,186	[5]				4,159	[5]	4,186	[5]
Total goodwill	2,288	[4]				2,485	[4]				2,288	[4]	2,485	[4]
Total customer advances and amounts in excess of costs incurred	1,942					1,988					1,942		1,988
Business segments | Mission Systems and Training
Segment Reporting Information [Line Items]
Total net sales											7,153		7,579		7,132
Operating profit											905		737		645
Total depreciation and amortization											174		179		174
Capitalized expenditures											132		158		161
Total assets	6,512	[5]				6,589	[5]				6,512	[5]	6,589	[5]
Total goodwill	3,264	[4]				3,264	[4]				3,264	[4]	3,264	[4]
Total customer advances and amounts in excess of costs incurred	1,188					1,335					1,188		1,335
Business segments | Space Systems
Segment Reporting Information [Line Items]
Total net sales											7,958		8,347		8,161
Operating profit											1,045		1,083		1,063
Total depreciation and amortization											199		191		199
Capitalized expenditures											170		167		192
Total assets	3,522	[5]				3,478	[5]				3,522	[5]	3,478	[5]
Total goodwill	708	[4]				708	[4]				708	[4]	708	[4]
Total customer advances and amounts in excess of costs incurred	464					475					464		475
Intersegment elimination
Segment Reporting Information [Line Items]
Total intersegment sales											(2,247)		(2,348)		(2,432)
Intersegment elimination | Aeronautics
Segment Reporting Information [Line Items]
Total intersegment sales											(195)		(197)		(193)
Intersegment elimination | Information Systems & Global Solutions
Segment Reporting Information [Line Items]
Total intersegment sales											(687)		(838)		(864)
Intersegment elimination | Missiles and Fire Control
Segment Reporting Information [Line Items]
Total intersegment sales											(273)		(298)		(304)
Intersegment elimination | Mission Systems and Training
Segment Reporting Information [Line Items]
Total intersegment sales											(991)		(908)		(958)
Intersegment elimination | Space Systems
Segment Reporting Information [Line Items]
Total intersegment sales											(101)		(107)		(113)
Corporate
Segment Reporting Information [Line Items]
Total depreciation and amortization											107		111		105
Capitalized expenditures											71		140		83
Total assets	$ 10,376	[3]				$ 12,215	[3]				$ 10,376	[3]	$ 12,215	[3]

[1] We recognized a non-cash goodwill impairment charge related to the Technical Services reporting unit within our MFC business segment. See Note 1 for more information.

[2] See Note 2 for information on charges related to certain severance actions at our business segments and Corporate Headquarters. Severance charges for initiatives that are not significant are included in business segment operating profit.

[3] Corporate assets primarily include cash and cash equivalents, deferred income taxes, environmental receivables, and investments held in a separate trust.

[4] During 2013, the decrease in goodwill primarily was due to a non-cash impairment charge of $195 million, net of state tax benefits, related to our MFC business segment (Note 1), partially offset by the acquisition of Amor Group at our IS&GS business segment (Note 14). During 2012, goodwill increased $222 million primarily due to the acquisitions of Chandler/May, Inc. (Chandler/May), CDL Systems Ltd. (CDL), and Procerus Technologies, L.C. (Procerus) at our MST business segment (Note 14).

[5] We have no significant long-lived assets located in foreign countries.