|**Goodwill And Other Intangible Assets (Tables)**                                                 | 6 Months Ended                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
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|**Goodwill and Intangible Assets Disclosure [Abstract]**                                          |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     
|Schedule Of Changes In Carrying Amount Of Goodwill                                                | The changes in the carrying amount of goodwill for each of the Company’s reportable segments (see Note 14) for thesixmonths endedJune 28, 2014were as follows (in millions):IESDCATDTotalBalance at December 28, 2013$1,526$1,998$3,524Spinal Modulation, Inc.(36)—(36)Foreign currency translation and other1(5)(4)Balance at June 28, 2014$1,491$1,993$3,484                                                                                                                                                                                                                      
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|                                                                                                  | IESD                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
|Balance at December 28, 2013                                                                      | $                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   
|Spinal Modulation, Inc.                                                                           | (36                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 
|Foreign currency translation and other                                                            | 1                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   
|Balance at June 28, 2014                                                                          | $                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   
|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):June 28, 2014December 28, 2013GrossCarryingAmountAccumulatedAmortizationGrossCarryingAmountAccumulatedAmortizationDefinite-lived intangible assets:Purchased technology and patents$1,042$432$986$393Customer lists and relationships20142013Trademarks and tradenames22122211Licenses, distribution agreements and other4241$1,088$460$1,032$418Indefinite-lived intangible assets:Acquired IPR&D$205$262Trademarks and tradenames3535$240$297
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|                                                                                                  | June 28, 2014                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       
|                                                                                                  | GrossCarryingAmount                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 
|Definite-lived intangible assets:                                                                 |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     
|Purchased technology and patents                                                                  | $                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   
|Customer lists and relationships                                                                  | 20                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
|Trademarks and tradenames                                                                         | 22                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
|Licenses, distribution agreements and other                                                       | 4                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   
|                                                                                                  | $                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   
|Indefinite-lived intangible assets:                                                               |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     
|Acquired IPR&D                                                                                    | $                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   
|Trademarks and tradenames                                                                         | 35                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
|                                                                                                  | $                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   
|Schedule of Finite-Lived Intangible Assets, Future Amortization Expense                           | The following table presents expected future amortization expense for acquired intangible assets recognized as ofJune 28, 2014and amortization expense of expected indefinite-lived IPR&D amortization based on anticipated regulatory product approvals (in millions):Remainder ofAfter201420152016201720182018Amortization expense$42$84$86$75$74$472                                                                                                                                                                                                                             
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|                                                                                                  | Remainder of                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
|                                                                                                  | 2014                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
|Amortization expense                                                                              | $                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   

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