Risk Management (Summary Of Fair Values And Location In Condensed Consolidated Balance Sheet) (Details) - Not Designated As Hedging Instruments - USD ($) $ in Millions	Apr. 02, 2016	Dec. 31, 2015
Derivatives, Fair Value [Line Items]
Fair value of derivative assets	$ 3	$ 6
Fair value of derivative liabilities	6	3
Foreign exchange contracts \| Other current assets
Derivatives, Fair Value [Line Items]
Fair value of derivative assets	3	6
Foreign exchange contracts \| Accrued liabilities
Derivatives, Fair Value [Line Items]
Fair value of derivative liabilities	5	2
Interest rate swap \| Other current assets
Derivatives, Fair Value [Line Items]
Fair value of derivative assets	0	0
Interest rate swap \| Accrued liabilities
Derivatives, Fair Value [Line Items]
Fair value of derivative liabilities	$ 1	$ 1

Fair value, before effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities elected not to be offset. Excludes liabilities not subject to a master netting arrangement.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 20
-Section 50
-Paragraph 4D
-Subparagraph (c)(2)
-URI http://asc.fasb.org/extlink&oid=64830801&loc=SL51823488-111719

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 20
-Section 50
-Paragraph 3
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4B
-Subparagraph (a),(c)
-URI http://asc.fasb.org/extlink&oid=64837297&loc=SL5624163-113959

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 20
-Section 55
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=51825145&loc=SL20226000-175313

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant