Information On Business Segments (Schedule Of Segment Reporting Information, By Segment) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended																12 Months Ended
	Dec. 31, 2011		Sep. 25, 2011		Jun. 26, 2011		Mar. 27, 2011		Dec. 31, 2010		Sep. 26, 2010		Jun. 27, 2010		Mar. 28, 2010		Dec. 31, 2011		Dec. 31, 2010		Dec. 31, 2009
Segment Reporting Information [Line Items]
Net sales	$ 12,211	[1]	$ 12,119	[1]	$ 11,543	[1],[2]	$ 10,626	[1],[2]	$ 12,761	[1]	$ 11,343	[1]	$ 11,259	[1],[2]	$ 10,308	[1],[2]	$ 46,499		$ 45,671		$ 43,867
Operating profit	1,082		1,041		993	[2]	864	[2]	1,115		877		1,119	[2]	938	[2]	3,980	[3]	4,049	[3]	4,367	[3]
Severance and other charges					(97)												(136)	[4]	(220)	[4]
Intersegment revenue																	2,265		2,152		2,015
Depreciation and amortization																	1,008		1,052		1,014
Expenditures for property, plant and equipment and capitalized software																	987		1,074		1,166
Assets	37,908	[5]							35,113	[5]							37,908	[5]	35,113	[5]
Goodwill	10,148	[6]							9,605	[6]							10,148	[6]	9,605	[6]
Customer advances and amounts in excess of costs incurred	6,399								5,890								6,399		5,890
Equity in net earnings (losses) of equity investees																	332		312		278
Non-cash FAS/CAS pension adjustment																	(922)		(454)		(456)
Stock-based compensation and other, net																	(243)		(305)		(233)
Other unallocated corporate expense, net																	(1,165)	[7]	(759)	[7]	(689)	[7]
Aeronautics [Member]
Segment Reporting Information [Line Items]
Net sales																	14,362		13,109		11,988
Operating profit																	1,630	[3]	1,498	[3]	1,567	[3]
Severance and other charges																	(49)
Intersegment revenue																	193		128		210
Depreciation and amortization																	345		334		304
Expenditures for property, plant and equipment and capitalized software																	361		422		436
Assets	5,752	[5]							5,231	[5]							5,752	[5]	5,231	[5]
Goodwill	146								148								146		148
Customer advances and amounts in excess of costs incurred	2,443								2,774								2,443		2,774
Equity in net earnings (losses) of equity investees																	7		7		9
Electronic Systems [Member]
Segment Reporting Information [Line Items]
Net sales																	14,622		14,399		13,630
Operating profit																	1,788	[3]	1,748	[3]	1,648	[3]
Severance and other charges									(42)										(42)
Intersegment revenue																	1,095		988		856
Depreciation and amortization																	276		286		287
Expenditures for property, plant and equipment and capitalized software																	280		288		290
Assets	10,480	[5]							9,925	[5]							10,480	[5]	9,925	[5]
Goodwill	5,760								5,601								5,760		5,601
Customer advances and amounts in excess of costs incurred	3,214								2,491								3,214		2,491
Equity in net earnings (losses) of equity investees																	64		50		53
Information Systems & Global Solutions [Member]
Segment Reporting Information [Line Items]
Net sales																	9,381		9,921		9,599
Operating profit																	874	[3]	814	[3]	874	[3]
Intersegment revenue																	864		912		827
Depreciation and amortization																	83		106		119
Expenditures for property, plant and equipment and capitalized software																	71		67		66
Assets	5,838	[5]							5,463	[5]							5,838	[5]	5,463	[5]
Goodwill	3,749								3,363								3,749		3,363
Customer advances and amounts in excess of costs incurred	350								284								350		284
Space Systems [Member]
Segment Reporting Information [Line Items]
Net sales																	8,134		8,242		8,650
Operating profit																	989	[3]	968	[3]	967	[3]
Severance and other charges																	(48)
Intersegment revenue																	113		124		122
Depreciation and amortization																	199		212		209
Expenditures for property, plant and equipment and capitalized software																	192		205		232
Assets	3,121	[5]							3,041	[5]							3,121	[5]	3,041	[5]
Goodwill	493								493								493		493
Customer advances and amounts in excess of costs incurred	392								341								392		341
Equity in net earnings (losses) of equity investees																	227		259		218
Business Segment [Member]
Segment Reporting Information [Line Items]
Operating profit																	5,281	[3]	5,028	[3]	5,056	[3]
Depreciation and amortization																	903		938		919
Expenditures for property, plant and equipment and capitalized software																	904		982		1,024
Assets	25,191	[5]							23,660	[5]							25,191	[5]	23,660	[5]
Equity in net earnings (losses) of equity investees																	298		316		280
Corporate [Member]
Segment Reporting Information [Line Items]
Depreciation and amortization																	105		114		95
Expenditures for property, plant and equipment and capitalized software																	83		92		142
Assets	12,717	[8]							11,057	[8]							12,717	[8]	11,057	[8]
Equity in net earnings (losses) of equity investees																	34		(4)		(2)
Discontinued Operation Or Asset Disposal [Member]
Segment Reporting Information [Line Items]
Assets									$ 396	[5]									$ 396	[5]

[1] The decrease in net sales from the fourth quarter of 2010 to the fourth quarter of 2011 is primarily due to declines in net sales at our Electronic Systems, IS&GS, and Space Systems business segments. The decline at Electronic Systems was primarily due to fewer deliveries on tactical missile programs and net declines in volume on various other programs. The decline at IS&GS was primarily due to lower volume due to the absence of the Decennial Response Integration System (DRIS) program that supported the 2010 U.S. census and a decline in activities on the Airborne Maritime Fixed Station Joint Tactical Radio System (JTRS). The decline at Space Systems was primarily due to decreased volume related to satellite activities.

[2] Net sales, operating profit, and net earnings (loss) from continuing and discontinued operations varies from the amounts previously reported on Forms 10-Q as a result of Savi being classified as discontinued operations in the third quarter of 2011.

[3] (a) Operating profit included equity in net earnings (losses) of equity investees as follows: (In millions) 2011 2010 2009 Aeronautics $ 7 $ 7 $ 9 Electronic Systems 64 50 53 Space Systems 227 259 218 Total business segments 298 316 280 Corporate activities 34 (4 ) (2 ) Total $ 332 $ 312 $ 278

[4] Severance and other charges include the severance charges recorded in 2011 associated with Aeronautics, IS&GS, and Space Systems business segments, and Corporate Headquarters, and for 2010, included the charges related to the VESP and facilities consolidation within Electronic Systems (Note 2).

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

[6] During 2011, the increase in goodwill primarily was due to the acquisition of QTC and Sim-Industries B.V. In 2010, goodwill decreased primarily due to the sale of Enterprise Integration Group (EIG) and the reclassification of Pacific Architects and Engineers, Inc.'s (PAE) assets and liabilities to discontinued operations in 2010 (Note 14).

[7] (c) Other unallocated corporate expense, net included the following: (In millions) 2011 2010 2009 Non-cash FAS/CAS pension adjustment $ (922 ) $ (454 ) $ (456 ) Stock-based compensation and other, net (243 ) (305 ) (233 ) Total $ (1,165 ) $ (759 ) $ (689 )

[8] Corporate assets primarily include cash and cash equivalents, short-term investments, deferred income taxes, environmental receivables, and investments held in a Rabbi Trust.