Intangible Assets and Goodwill (Pro Forma Financial Information) (Details) - Guardian Digital Communications Limited (GDCL) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended
Apr. 02, 2016	Apr. 04, 2015
Business Acquisition, Pro Forma Information [Abstract]
Revenues	$ 1,264	$ 1,364
Earnings from continuing operations	$ 41	$ 100
Basic earnings per share (in $ per share)	$ 0.24	$ 0.46
Diluted earnings per share (in $ per share)	$ 0.23	$ 0.46

The pro forma basic net income per share for a period as if the business combination or combinations had been completed at the beginning of a period.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(2)-(3)
-URI http://asc.fasb.org/extlink&oid=65885119&loc=d3e1392-128463

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The pro forma diluted net income per share for a period as if the business combination or combinations had been completed at the beginning of a period.

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The pro forma net Income or Loss for the period as if the business combination or combinations had been completed at the beginning of a period.

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The pro forma revenue for a period as if the business combination or combinations had been completed at the beginning of the period.

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