Goodwill and Other Purchased Intangible Assets (Tables) (Unaudited)

9 Months Ended

Sep. 30, 2011

GOODWILL AND OTHER PURCHASED INTANGIBLE ASSETS [Abstract]

Goodwill

$ in millions	Aerospace Systems		Electronic Systems		Information Systems		Technical Services		Total
Goodwill		$3,801		$2,402		$5,248		$925		$12,376

Purchased intangible assets

	September 30, 2011							December 31, 2010
$ in millions	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
Contract and program intangibles		$1,705		$(1,554	)		$151		$1,705		$(1,531	)		$174
Other purchased intangibles		100		(87	)		13		100		(82	)		18
Total		$1,805		$(1,641	)		$164		$1,805		$(1,613	)		$192

Expected amortization for purchased intangibles

$ in millions
Year ending December 31
2011 (October 1—December 31)	$	9
2012		36
2013		29
2014		16
2015		15
2016		11