|**Goodwill and Other Intangible Assets (Tables)**                                                                                                             | 3 Months Ended                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
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|**Goodwill and Intangible Assets Disclosure [Abstract]**                                                                                                      |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           
|Identifiable intangible assets as a percentage of total identifiable intangible assets less accumulated amortization, by segment [Table Text Block]           | Our identifiable intangible assets are associated with the following, as a percentage of total identifiable intangible assets, less accumulated amortization:March 30, 2014GIPVOCGEPWRD(a)Developed technology rights34%32%34%—%Brands, finite-lived—%75%25%—%Brands, indefinite-lived—%69%31%—%In-process research and development9%58%9%24%                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             
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|Our identifiable intangible assets are associated with the following, as a percentage of total identifiable intangible assets, less accumulated amortization:
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|Developed technology rights                                                                                                                                   |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           
|Brands, finite-lived                                                                                                                                          |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           
|Brands, indefinite-lived                                                                                                                                      |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           
|In-process research and development                                                                                                                           |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           
|Schedule of Goodwill                                                                                                                                          | The following table provides the components of and changes in the carrying amount ofGoodwill:(MILLIONS OF DOLLARS)GIPVOCGEPTo be Allocated(a)TotalBalance, December 31, 2013$$$$42,519$42,519Additions——Other(b)(52)(52)Balance, March 30, 2014$$$$42,467$42,467(a)The amount to be allocated includes the goodwill associated with our former biopharmaceutical operating segments (see above), for which the allocation to our new reporting units, and, as a result, to the new operating segments, is pending.(b)Primarily reflects the impact of foreign exchange.                                                                                                                                                                                                                                                                                                                                                                                                   
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|The following table provides the components of and changes in the carrying amount ofGoodwill:                                                                
|(MILLIONS OF DOLLARS)                                                                                                                                         |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           
|Balance, December 31, 2013                                                                                                                                    |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           
|Additions                                                                                                                                                     |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           
|Other(b)                                                                                                                                                      |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           
|Balance, March 30, 2014                                                                                                                                       |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           
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|(a)                                                                                                                                                           | The amount to be allocated includes the goodwill associated with our former biopharmaceutical operating segments (see above), for which the allocation to our new reporting units, and, as a result, to the new operating segments, is pending.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           
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|(b)                                                                                                                                                           | Primarily reflects the impact of foreign exchange.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
|Schedule of Finite Lived And Indefinite Lived Intangible Assets                                                                                               | The following table provides the components ofIdentifiable intangible assets:March 30, 2014December 31, 2013(MILLIONS OF DOLLARS)GrossCarryingAmountAccumulatedAmortizationIdentifiableIntangibleAssets, lessAccumulatedAmortizationGrossCarryingAmountAccumulatedAmortizationIdentifiableIntangibleAssets, lessAccumulatedAmortizationFinite-lived intangible assetsDeveloped technology rights$72,064$(42,676)$29,388$72,038$(41,541)$30,497Brands1,742(793)9491,743(773)970Licensing agreements and other903(810)93896(805)9174,709(44,279)30,43074,677(43,119)31,558Indefinite-lived intangible assetsBrands and other7,3637,3637,3847,384In-process research and development3293294434437,6927,6927,8277,827Identifiable intangible assets(a)$82,401$(44,279)$38,122$82,504$(43,119)$39,385(a)The decrease is primarily related to amortization and asset impairment charges. For information about impairments of intangible assets, seeNote 4.Other Deductions—Net.
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|The following table provides the components ofIdentifiable intangible assets:                                                                                
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|(MILLIONS OF DOLLARS)                                                                                                                                         |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           
|Finite-lived intangible assets                                                                                                                                |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           
|Developed technology rights                                                                                                                                   |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           
|Brands                                                                                                                                                        |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           
|Licensing agreements and other                                                                                                                                |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           
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|Indefinite-lived intangible assets                                                                                                                            |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           
|Brands and other                                                                                                                                              |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           
|In-process research and development                                                                                                                           |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           
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|Identifiable intangible assets(a)                                                                                                                             |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           
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|(a)                                                                                                                                                           | The decrease is primarily related to amortization and asset impairment charges. For information about impairments of intangible assets, seeNote 4.Other Deductions—Net.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   

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