Divestitures (Spin-off) (Details) - Discontinued Operations, Disposed of by Means Other than Sale, Spinoff [Member] - SAIC - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jul. 01, 2016	Jul. 03, 2015	Jul. 01, 2016	Jul. 03, 2015
Disposal Group, Including Discontinued Operation, Income Statement Disclosures [Abstract]
Revenues	$ 4	$ 6	$ 7	$ 14
Cost of revenues	4	6	7	12
Selling, general and administrative expenses	0	0	0	4
Operating loss	0	0	0	(2)
Non-operating income	$ 0	$ 0	$ 0	$ 2

Disposal Group, Including Discontinued Operation, Selling, General and Administrative Expense

No definition available.

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- Definition

Amount of costs of goods sold attributable to disposal group, including, but not limited to, discontinued operation.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 205
-SubTopic 20
-Section 50
-Paragraph 5B
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=64827811&loc=SL51721673-107760

+ Details

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- Definition

Amount of operating income (loss) attributable to disposal group, including, but not limited to, discontinued operation.

+ References

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- Definition

Amount of revenue attributable to disposal group, including, but not limited to, discontinued operation.

+ References

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- References

No definition available.

+ Details

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- Definition

The aggregate amount of income or expense from ancillary business-related activities (that is to say, excluding major activities considered part of the normal operations of the business).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.7)
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

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