Cover Page - shares	3 Months Ended
	Mar. 29, 2020	May 11, 2020
Cover [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Fiscal Year Focus	2020
Document Period End Date	Mar. 29, 2020
Document Fiscal Period Focus	Q1
Current Fiscal Year End Date	--12-31
Document Quarterly Report	true
Document Transition Report	false
Entity Registrant Name	Upjohn Inc
Entity Central Index Key	0001792044
Entity File Number	000-56114
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	83-4364296
Entity Address, Address Line One	235 East 42nd Street
Entity Address, City or Town	New York
Entity Address, State or Province	NY
Entity Address, Postal Zip Code	10017
City Area Code	212
Local Phone Number	733-2323
Title of 12(b) Security	None
No Trading Symbol Flag	true
Entity Current Reporting Status	No
Entity Interactive Data Current	Yes
Entity Emerging Growth Company	false
Entity Small Business	false
Entity Shell Company	true
Entity Filer Category	Non-accelerated Filer
Entity Common Stock, Shares Outstanding		100