Severance And Other Charges (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended	12 Months Ended							3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended
	Jun. 26, 2011	Dec. 31, 2011		Dec. 31, 2010		Dec. 31, 2011 Information Systems & Global Solutions (IS&GS) And Corporate Headquarters [Member]	Dec. 31, 2011 Aeronautics [Member]	Dec. 31, 2011 Space Systems [Member]	Dec. 31, 2010 Electronic Systems [Member]	Dec. 31, 2010 Electronic Systems [Member]	Sep. 26, 2010 Voluntary Executive Separation Program [Member]	Dec. 31, 2010 Voluntary Executive Separation Program [Member]	Dec. 31, 2010 Voluntary Executive Separation Program [Member] Aeronautics [Member]	Dec. 31, 2010 Voluntary Executive Separation Program [Member] Space Systems [Member]	Dec. 31, 2010 Voluntary Executive Separation Program [Member] Information Systems & Global Solutions [Member]	Dec. 31, 2010 Voluntary Executive Separation Program [Member] Corporate Headquarters [Member]	Dec. 31, 2010 Voluntary Executive Separation Program [Member] Electronic Systems [Member]
Severance And Other Charges [Line Items]
Severance and other charges	$ 97	$ 136	[1]	$ 220	[1]	$ 39	$ 49	$ 48	$ 42	$ 42	$ 178	$ 178	$ 25	$ 41	$ 42	$ 32	$ 38
Reduction in net earnings due to severance and other charges	$ 63	$ 88							$ 27	$ 27	$ 116	$ 116
Decrease in diluted earnings per share due to severance and other charges		$ 0.26								$ 0.07		$ 0.31
Maximum number of days within which cash special payment has to be made												90

[1] 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).