Identifiable Intangible Assets and Goodwill - Indefinite-lived Intangible Assets Percentage of Total Intangibles (Details)	Jun. 30, 2019
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	86.00%
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%
Pfizer's Worldwide Research, Development And Medical [Member] | Segment Reconciling Items [Member] | Brands [Member]
Indefinite-lived Intangible Assets [Line Items]
Percentage of total identifiable intangible assets, less accumulated amortization	0.00%
Pfizer's Worldwide Research, Development And Medical [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	14.00%