|**Goodwill And Other Intangible Assets (Tables)**                                                 | 12 Months Ended                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       
|------------------------------------------------------------------------------------------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|
|**Goodwill and Intangible Assets Disclosure [Abstract]**                                          |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       
|Schedule Of Changes In Carrying Amount Of Goodwill                                                | The changes in the carrying amount of goodwill for the fiscal years endedJanuary 3, 2015andDecember 28, 2013were as follows (in millions):Balance as of December 29, 2012$2,961Endosense258Nanostim149Spinal Modulation82CardioMEMS83Foreign currency translation and other(9)Balance as of December 28, 20133,524NeuroTherm125Spinal Modulation(36)Foreign currency translation and other(81)Balance as of January 3, 2015$3,532                                                                                                                                                     
|                                                                                                 
|                                                                                                  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       
|Balance as of December 29, 2012                                                                   | $                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     
|Endosense                                                                                         | 258                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   
|Nanostim                                                                                          | 149                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   
|Spinal Modulation                                                                                 | 82                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
|CardioMEMS                                                                                        | 83                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
|Foreign currency translation and other                                                            | (9                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
|Balance as of December 28, 2013                                                                   | 3,524                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 
|NeuroTherm                                                                                        | 125                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   
|Spinal Modulation                                                                                 | (36                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   
|Foreign currency translation and other                                                            | (81                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   
|Balance as of January 3, 2015                                                                     | $                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     
|Schedule Of Gross Carrying Amount Of Other Intangible Assets And Related Accumulated Amortization | The following table provides the gross carrying amount of other intangible assets and related accumulated amortization (in millions):January 3, 2015December 28, 2013GrossCarryingAmountAccumulatedAmortizationGrossCarryingAmountAccumulatedAmortizationDefinite-lived intangible assets:Purchased technology and patents$1,162$473$986$393Customer lists and relationships19142013Trademarks and tradenames22132211Licenses, distribution agreements and other7241$1,210$502$1,032$418Indefinite-lived intangible assets:Acquired IPR&D$116$262Trademarks and tradenames2735$143$297
|                                                                                                 
|                                                                                                  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       
|                                                                                                  | January 3, 2015                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       
|                                                                                                  | GrossCarryingAmount                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   
|Definite-lived intangible assets:                                                                 |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       
|Purchased technology and patents                                                                  | $                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     
|Customer lists and relationships                                                                  | 19                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
|Trademarks and tradenames                                                                         | 22                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
|Licenses, distribution agreements and other                                                       | 7                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     
|                                                                                                  | $                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     
|Indefinite-lived intangible assets:                                                               |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       
|Acquired IPR&D                                                                                    | $                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     
|Trademarks and tradenames                                                                         | 27                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
|                                                                                                  | $                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     
|Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]        | The following table presents expected future amortization expense for acquired intangible assets recognized as of January 3, 2015 and expected amortization expense of indefinite-lived IPR&D assets based on anticipated regulatory product approvals (in millions):After201520162017201820192019Amortization expense$98$99$87$88$86$366                                                                                                                                                                                                                                             
|                                                                                                 
|                                                                                                  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       
|                                                                                                  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       
|                                                                                                  | 2015                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
|Amortization expense                                                                              | $                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     

X- Details**Name:**
                    us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract**Namespace Prefix:**
                    us-gaap_**Data Type:**
                    xbrli:stringItemType**Balance Type:**
                    na**Period Type:**
                    duration X- DefinitionTabular disclosure of the amount of amortization expense expected to be recorded in succeeding fiscal years for finite-lived intangible assets.+ ReferencesReference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275+ Details**Name:**
                    us-gaap_ScheduleofFiniteLivedIntangibleAssetsFutureAmortizationExpenseTableTextBlock**Namespace Prefix:**
                    us-gaap_**Data Type:**
                    nonnum:textBlockItemType**Balance Type:**
                    na**Period Type:**
                    duration X- DefinitionTabular disclosure of assets, excluding financial assets and goodwill, lacking physical substance with a finite life, by either major class or business segment.+ ReferencesReference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16265-109275Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275+ Details**Name:**
                    us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTableTextBlock**Namespace Prefix:**
                    us-gaap_**Data Type:**
                    nonnum:textBlockItemType**Balance Type:**
                    na**Period Type:**
                    duration X- DefinitionTabular disclosure of goodwill by reportable segment and in total which includes a rollforward schedule.+ ReferencesReference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13854-109267+ Details**Name:**
                    us-gaap_ScheduleOfGoodwillTextBlock**Namespace Prefix:**
                    us-gaap_**Data Type:**
                    nonnum:textBlockItemType**Balance Type:**
                    na**Period Type:**
                    duration