Derivative Financial Instruments Summary of Derivative Instruments (Gain) Loss, Not Designated as Hedging (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jul. 04, 2015	Jun. 28, 2014	Jul. 04, 2015	Jun. 28, 2014
Foreign currency forward contracts \| Other (income) expense \| Not Designated as Hedging Instrument
Derivative Instruments, (Gain) Loss [Line Items]
Derivative Instruments Not Designated as Hedging Instruments, (Gain) Loss, Net	$ 1	$ 4	$ (8)	$ 4

Amount of realized and unrealized gain (loss) of derivative instruments not designated or qualifying as hedging instruments.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 4C

-Subparagraph (e)

-URI http://asc.fasb.org/extlink&oid=56946850&loc=SL5624171-113959

Name:	us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration