|**Goodwill and Other Intangible Assets - Finite-lived and Indefinite-lived Intangible Assets (Detail) (USD $)In Millions, unless otherwise specified**                                      | Mar. 30, 2014                                                                                                                                                             | Dec. 31, 2013                                                                                                                                                            
|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|**Finite Lived and Indefinite Lived Intangible Assets [Line Items]**                                                                                                                        |                                                                                                                                                                           |                                                                                                                                                                          
|Finite-lived Intangible Assets, Gross Carrying Amount                                                                                                                                       | $ 74,709                                                                                                                                                                  |                                                                                                                                                                          
|Finite-lived Intangible Assets, Accumulated Amortization                                                                                                                                    | (44,279)                                                                                                                                                                  | [1]                                                                                                                                                                      
|Finite-lived Intangible Assets, less Accumulated Amortization                                                                                                                               | 30,430                                                                                                                                                                    |                                                                                                                                                                          
|Total indefinite-lived intangible assets                                                                                                                                                    | 7,692                                                                                                                                                                     |                                                                                                                                                                          
|Intangible assets, gross carrying amount                                                                                                                                                    | 82,401                                                                                                                                                                    | [1]                                                                                                                                                                      
|Identifiable Intangible Assets, less Accumulated Amortization                                                                                                                               | 38,122                                                                                                                                                                    | [1]                                                                                                                                                                      
|Trade Names [Member]                                                                                                                                                                        |                                                                                                                                                                           |                                                                                                                                                                          
|**Finite Lived and Indefinite Lived Intangible Assets [Line Items]**                                                                                                                        |                                                                                                                                                                           |                                                                                                                                                                          
|Total indefinite-lived intangible assets                                                                                                                                                    | 7,363                                                                                                                                                                     |                                                                                                                                                                          
|In Process Research and Development [Member]                                                                                                                                                |                                                                                                                                                                           |                                                                                                                                                                          
|**Finite Lived and Indefinite Lived Intangible Assets [Line Items]**                                                                                                                        |                                                                                                                                                                           |                                                                                                                                                                          
|Total indefinite-lived intangible assets                                                                                                                                                    | 329                                                                                                                                                                       |                                                                                                                                                                          
|Developed Technology Rights [Member]                                                                                                                                                        |                                                                                                                                                                           |                                                                                                                                                                          
|**Finite Lived and Indefinite Lived Intangible Assets [Line Items]**                                                                                                                        |                                                                                                                                                                           |                                                                                                                                                                          
|Finite-lived Intangible Assets, Gross Carrying Amount                                                                                                                                       | 72,064                                                                                                                                                                    |                                                                                                                                                                          
|Finite-lived Intangible Assets, Accumulated Amortization                                                                                                                                    | (42,676)                                                                                                                                                                  |                                                                                                                                                                          
|Finite-lived Intangible Assets, less Accumulated Amortization                                                                                                                               | 29,388                                                                                                                                                                    |                                                                                                                                                                          
|Trade Names [Member]                                                                                                                                                                        |                                                                                                                                                                           |                                                                                                                                                                          
|**Finite Lived and Indefinite Lived Intangible Assets [Line Items]**                                                                                                                        |                                                                                                                                                                           |                                                                                                                                                                          
|Finite-lived Intangible Assets, Gross Carrying Amount                                                                                                                                       | 1,742                                                                                                                                                                     |                                                                                                                                                                          
|Finite-lived Intangible Assets, Accumulated Amortization                                                                                                                                    | (793)                                                                                                                                                                     |                                                                                                                                                                          
|Finite-lived Intangible Assets, less Accumulated Amortization                                                                                                                               | 949                                                                                                                                                                       |                                                                                                                                                                          
|License Agreements and Other [Member]                                                                                                                                                       |                                                                                                                                                                           |                                                                                                                                                                          
|**Finite Lived and Indefinite Lived Intangible Assets [Line Items]**                                                                                                                        |                                                                                                                                                                           |                                                                                                                                                                          
|Finite-lived Intangible Assets, Gross Carrying Amount                                                                                                                                       | 903                                                                                                                                                                       |                                                                                                                                                                          
|Finite-lived Intangible Assets, Accumulated Amortization                                                                                                                                    | (810)                                                                                                                                                                     |                                                                                                                                                                          
|Finite-lived Intangible Assets, less Accumulated Amortization                                                                                                                               | $ 93                                                                                                                                                                      |                                                                                                                                                                          
|Global Innovative Pharmaceutical [Member] | Trade Names [Member]                                                                                                                            |                                                                                                                                                                           |                                                                                                                                                                          
|**Finite Lived and Indefinite Lived Intangible Assets [Line Items]**                                                                                                                        |                                                                                                                                                                           |                                                                                                                                                                          
|Percentage of total identifiable intangible assets, less accumulated amortization                                                                                                           | 0.00%                                                                                                                                                                     |                                                                                                                                                                          
|Global Innovative Pharmaceutical [Member] | In Process Research and Development [Member]                                                                                                    |                                                                                                                                                                           |                                                                                                                                                                          
|**Finite Lived and Indefinite Lived Intangible Assets [Line Items]**                                                                                                                        |                                                                                                                                                                           |                                                                                                                                                                          
|Percentage of total identifiable intangible assets, less accumulated amortization                                                                                                           | 9.00%                                                                                                                                                                     |                                                                                                                                                                          
|Global Innovative Pharmaceutical [Member] | Developed Technology Rights [Member]                                                                                                            |                                                                                                                                                                           |                                                                                                                                                                          
|**Finite Lived and Indefinite Lived Intangible Assets [Line Items]**                                                                                                                        |                                                                                                                                                                           |                                                                                                                                                                          
|Percentage of total identifiable intangible assets, less accumulated amortization                                                                                                           | 34.00%                                                                                                                                                                    |                                                                                                                                                                          
|Global Innovative Pharmaceutical [Member] | Trade Names [Member]                                                                                                                            |                                                                                                                                                                           |                                                                                                                                                                          
|**Finite Lived and Indefinite Lived Intangible Assets [Line Items]**                                                                                                                        |                                                                                                                                                                           |                                                                                                                                                                          
|Percentage of total identifiable intangible assets, less accumulated amortization                                                                                                           | 0.00%                                                                                                                                                                     |                                                                                                                                                                          
|Global Vaccines, Oncology and Consumer Healthcare [Member] | Trade Names [Member]                                                                                                           |                                                                                                                                                                           |                                                                                                                                                                          
|**Finite Lived and Indefinite Lived Intangible Assets [Line Items]**                                                                                                                        |                                                                                                                                                                           |                                                                                                                                                                          
|Percentage of total identifiable intangible assets, less accumulated amortization                                                                                                           | 69.00%                                                                                                                                                                    |                                                                                                                                                                          
|Global Vaccines, Oncology and Consumer Healthcare [Member] | In Process Research and Development [Member]                                                                                   |                                                                                                                                                                           |                                                                                                                                                                          
|**Finite Lived and Indefinite Lived Intangible Assets [Line Items]**                                                                                                                        |                                                                                                                                                                           |                                                                                                                                                                          
|Percentage of total identifiable intangible assets, less accumulated amortization                                                                                                           | 58.00%                                                                                                                                                                    |                                                                                                                                                                          
|Global Vaccines, Oncology and Consumer Healthcare [Member] | Developed Technology Rights [Member]                                                                                           |                                                                                                                                                                           |                                                                                                                                                                          
|**Finite Lived and Indefinite Lived Intangible Assets [Line Items]**                                                                                                                        |                                                                                                                                                                           |                                                                                                                                                                          
|Percentage of total identifiable intangible assets, less accumulated amortization                                                                                                           | 32.00%                                                                                                                                                                    |                                                                                                                                                                          
|Global Vaccines, Oncology and Consumer Healthcare [Member] | Trade Names [Member]                                                                                                           |                                                                                                                                                                           |                                                                                                                                                                          
|**Finite Lived and Indefinite Lived Intangible Assets [Line Items]**                                                                                                                        |                                                                                                                                                                           |                                                                                                                                                                          
|Percentage of total identifiable intangible assets, less accumulated amortization                                                                                                           | 75.00%                                                                                                                                                                    |                                                                                                                                                                          
|Global Established Pharmaceutical [Member] | Trade Names [Member]                                                                                                                           |                                                                                                                                                                           |                                                                                                                                                                          
|**Finite Lived and Indefinite Lived Intangible Assets [Line Items]**                                                                                                                        |                                                                                                                                                                           |                                                                                                                                                                          
|Percentage of total identifiable intangible assets, less accumulated amortization                                                                                                           | 31.00%                                                                                                                                                                    |                                                                                                                                                                          
|Global Established Pharmaceutical [Member] | In Process Research and Development [Member]                                                                                                   |                                                                                                                                                                           |                                                                                                                                                                          
|**Finite Lived and Indefinite Lived Intangible Assets [Line Items]**                                                                                                                        |                                                                                                                                                                           |                                                                                                                                                                          
|Percentage of total identifiable intangible assets, less accumulated amortization                                                                                                           | 9.00%                                                                                                                                                                     |                                                                                                                                                                          
|Global Established Pharmaceutical [Member] | Developed Technology Rights [Member]                                                                                                           |                                                                                                                                                                           |                                                                                                                                                                          
|**Finite Lived and Indefinite Lived Intangible Assets [Line Items]**                                                                                                                        |                                                                                                                                                                           |                                                                                                                                                                          
|Percentage of total identifiable intangible assets, less accumulated amortization                                                                                                           | 34.00%                                                                                                                                                                    |                                                                                                                                                                          
|Global Established Pharmaceutical [Member] | Trade Names [Member]                                                                                                                           |                                                                                                                                                                           |                                                                                                                                                                          
|**Finite Lived and Indefinite Lived Intangible Assets [Line Items]**                                                                                                                        |                                                                                                                                                                           |                                                                                                                                                                          
|Percentage of total identifiable intangible assets, less accumulated amortization                                                                                                           | 25.00%                                                                                                                                                                    |                                                                                                                                                                          
|Research and Development Expense [Member] | Trade Names [Member]                                                                                                                            |                                                                                                                                                                           |                                                                                                                                                                          
|**Finite Lived and Indefinite Lived Intangible Assets [Line Items]**                                                                                                                        |                                                                                                                                                                           |                                                                                                                                                                          
|Percentage of total identifiable intangible assets, less accumulated amortization                                                                                                           | 0.00%                                                                                                                                                                     |                                                                                                                                                                          
|Research and Development Expense [Member] | In Process Research and Development [Member]                                                                                                    |                                                                                                                                                                           |                                                                                                                                                                          
|**Finite Lived and Indefinite Lived Intangible Assets [Line Items]**                                                                                                                        |                                                                                                                                                                           |                                                                                                                                                                          
|Percentage of total identifiable intangible assets, less accumulated amortization                                                                                                           | 24.00%                                                                                                                                                                    |                                                                                                                                                                          
|Research and Development Expense [Member] | Developed Technology Rights [Member]                                                                                                            |                                                                                                                                                                           |                                                                                                                                                                          
|**Finite Lived and Indefinite Lived Intangible Assets [Line Items]**                                                                                                                        |                                                                                                                                                                           |                                                                                                                                                                          
|Percentage of total identifiable intangible assets, less accumulated amortization                                                                                                           | 0.00%                                                                                                                                                                     |                                                                                                                                                                          
|Research and Development Expense [Member] | Trade Names [Member]                                                                                                                            |                                                                                                                                                                           |                                                                                                                                                                          
|**Finite Lived and Indefinite Lived Intangible Assets [Line Items]**                                                                                                                        |                                                                                                                                                                           |                                                                                                                                                                          
|Percentage of total identifiable intangible assets, less accumulated amortization                                                                                                           | 0.00%                                                                                                                                                                     |                                                                                                                                                                          
|                                                                                                                                                                                           
|[1]
              The decrease is primarily related to amortization and asset impairment charges. For information about impairments of intangible assets, see Note 4. Other Deductions—Net. | [1]                                                                                                                                                                       | The decrease is primarily related to amortization and asset impairment charges. For information about impairments of intangible assets, see Note 4. Other Deductions—Net.
|[1]                                                                                                                                                                                         | The decrease is primarily related to amortization and asset impairment charges. For information about impairments of intangible assets, see Note 4. Other Deductions—Net.

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