Business Segment Information (Tables)

6 Months Ended

12 Months Ended

Jul. 31, 2011

Jan. 31, 2011

Business Segment Information

Schedule Of Segment Reporting Information By Segment

	Six Months Ended July 31
	2011			2010
	(in millions)
Revenues:
Defense Solutions	$	2,222		$	2,269
Health, Energy and Civil Solutions		1,336			1,377
Intelligence and Cybersecurity Solutions		1,727			1,677
Corporate and Other		1			56
Intersegment elimination		(2	)		(3	)
Total revenues	$	5,284		$	5,376
Operating income (loss):
Defense Solutions	$	178		$	177
Health, Energy and Civil Solutions		117			127
Intelligence and Cybersecurity Solutions		159			131
Corporate and Other		(15	)		43
Total operating income	$	439		$	478

	Year Ended January 31
	2011			2010			2009
	(in millions)
Revenues:
Defense Solutions	$	4,657		$	4,518		$	4,035
Health, Energy and Civil Solutions		2,792			2,848			2,591
Intelligence and Cybersecurity Solutions		3,421			3,216			3,147
Corporate and Other		58			4			(2	)
Intersegment elimination		(7	)		(6	)		(3	)
Total revenues	$	10,921		$	10,580		$	9,768
Operating income (loss):
Defense Solutions	$	380		$	355		$	317
Health, Energy and Civil Solutions		258			236			213
Intelligence and Cybersecurity Solutions		288			281			261
Corporate and Other		21			(36	)		(44	)
Total operating income	$	947		$	836		$	747
Amortization of intangible assets:
Defense Solutions	$	7		$	12		$	12
Health, Energy and Civil Solutions		16			8			9
Intelligence and Cybersecurity Solutions		17			6			9
Total amortization of intangible assets	$	40		$	26		$	30

Schedule of Total Revenue Percentages Contributable to Specific Government Agencies Comprising More Than Ten Percent

	Year Ended January 31
	2011			2010			2009
U.S. Government		91	%		91	%		91	%
U.S. Army		23	%		24	%		25	%
U.S. Navy		13	%		13	%		12	%