The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
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Reference 2: http://www.xbrl.org/2003/role/presentationRef
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Schedule of Segment Reporting Information by Segment (Detail) - USD ($) $ in Millions	3 Months Ended								11 Months Ended		12 Months Ended
	Jan. 01, 2016	Oct. 02, 2015	Jul. 03, 2015	Apr. 03, 2015	Jan. 30, 2015	Oct. 31, 2014	Aug. 01, 2014	May. 02, 2014	Jan. 01, 2016	Jan. 02, 2015	Jan. 30, 2015	Jan. 31, 2014
Segment Reporting Information [Line Items]
Revenues	$ 1,281	$ 1,302	$ 1,257	$ 1,246	$ 1,169	$ 1,276	$ 1,306	$ 1,312	$ 4,712	$ 4,690	$ 5,063	$ 5,755
Operating income (loss)	$ 102	$ 94	$ 64	$ 38	$ 37	$ 72	$ (410)	$ 87	320	$ (191)	(214)	163
Amortization of intangible assets									8		15	35
Operating Segments \| National Security Solutions
Segment Reporting Information [Line Items]
Revenues									3,210		3,594	4,049
Operating income (loss)									263		286	292
Amortization of intangible assets									0		0	3
Operating Segments \| Health and Engineering
Segment Reporting Information [Line Items]
Revenues									1,496		1,485	1,718
Operating income (loss)									76		(472)	20
Amortization of intangible assets									8		15	32
Operating Segments \| Corporate and Other
Segment Reporting Information [Line Items]
Revenues									6		(16)	(9)
Operating income (loss)									(19)		(28)	(149)
Intersegment Eliminations
Segment Reporting Information [Line Items]
Revenues									$ 0		$ 0	$ (3)