| **Identifiable Intangible Assets and Goodwill - Indefinite-lived Intangible Assets Percentage of Total Intangibles (Details)** | Mar. 29, 2020 |
|--------------------------------------------------------------------------------------------------------------------------------|---------------|
| Biopharma [Member] | Operating Segments [Member] | Brands [Member]                                                             |          |
| **Indefinite-lived Intangible Assets [Line Items]**                                                                            |          |
| Percentage of total identifiable intangible assets, less accumulated amortization                                              | 42.00%        |
| Biopharma [Member] | Operating Segments [Member] | In Process Research and Development [Member]                                |          |
| **Indefinite-lived Intangible Assets [Line Items]**                                                                            |          |
| Percentage of total identifiable intangible assets, less accumulated amortization                                              | 95.00%        |
| Biopharma [Member] | Operating Segments [Member] | Licensing Agreements And Other [Member]                                     |          |
| **Indefinite-lived Intangible Assets [Line Items]**                                                                            |          |
| Percentage of total identifiable intangible assets, less accumulated amortization                                              | 100.00%       |
| Upjohn [Member] | Operating Segments [Member] | Brands [Member]                                                                |          |
| **Indefinite-lived Intangible Assets [Line Items]**                                                                            |          |
| Percentage of total identifiable intangible assets, less accumulated amortization                                              | 58.00%        |
| Upjohn [Member] | Operating Segments [Member] | In Process Research and Development [Member]                                   |          |
| **Indefinite-lived Intangible Assets [Line Items]**                                                                            |          |
| Percentage of total identifiable intangible assets, less accumulated amortization                                              | 0.00%         |
| Upjohn [Member] | Operating Segments [Member] | Licensing Agreements And Other [Member]                                        |          |
| **Indefinite-lived Intangible Assets [Line Items]**                                                                            |          |
| Percentage of total identifiable intangible assets, less accumulated amortization                                              | 0.00%         |
| WRDM [Member] | Segment Reconciling Items [Member] | Brands [Member]                                                           |          |
| **Indefinite-lived Intangible Assets [Line Items]**                                                                            |          |
| Percentage of total identifiable intangible assets, less accumulated amortization                                              | 0.00%         |
| WRDM [Member] | Segment Reconciling Items [Member] | In Process Research and Development [Member]                              |          |
| **Indefinite-lived Intangible Assets [Line Items]**                                                                            |          |
| Percentage of total identifiable intangible assets, less accumulated amortization                                              | 5.00%         |
| WRDM [Member] | Segment Reconciling Items [Member] | Licensing Agreements And Other [Member]                                   |          |
| **Indefinite-lived Intangible Assets [Line Items]**                                                                            |          |
| Percentage of total identifiable intangible assets, less accumulated amortization                                              | 0.00%         |

| X                                                                                                                                                                                                                                                                                            |
|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Intangible Assets, Net, Percentage of Intangible Assets, Net
+ References
No definition available.
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                            |
|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.
+ References
No definition available.
+ Details**Name:**us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassLineItems**Namespace Prefix:**us-gaap_**Data Type:**xbrli:stringItemType**Balance Type:**na**Period Type:**duration |
| X                                                                                                                                                        |
|----------------------------------------------------------------------------------------------------------------------------------------------------------|
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| X                                                                                                                                                  |
|----------------------------------------------------------------------------------------------------------------------------------------------------|
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| X                                                                                                                                                                        |
|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
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| X                                                                                                                                                                                             |
|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
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| X                                                                                                                                                                                     |
|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
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| X                                                                                                                                                     |
|-------------------------------------------------------------------------------------------------------------------------------------------------------|
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| X                                                                                                                                                                       |
|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
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| X                                                                                                                                                         |
|-----------------------------------------------------------------------------------------------------------------------------------------------------------|
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