Identifiable Intangible Assets and Goodwill - Indefinite-lived Intangible Assets Percentage of Total Intangibles (Details)	Sep. 27, 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] | IPR&D [Member]
Indefinite-lived Intangible Assets [Line Items]
Percentage of total identifiable intangible assets, less accumulated amortization	92.00%
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] | IPR&D [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] | IPR&D [Member]
Indefinite-lived Intangible Assets [Line Items]
Percentage of total identifiable intangible assets, less accumulated amortization	8.00%
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%