Cover - shares	3 Months Ended
	Mar. 31, 2022	Apr. 19, 2022
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Mar. 31, 2022
Document Transition Report	false
Entity File Number	001-37557
Entity Registrant Name	Penumbra, Inc
Entity Address, Address Description	One Penumbra Place
Entity Address, City or Town	Alameda
Entity Address, State or Province	CA
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	05-0605598
Entity Address, Postal Zip Code	94502
City Area Code	510
Local Phone Number	748-3200
Title of 12(b) Security	Common Stock, Par value $0.001 per share
Trading Symbol	PEN
Security Exchange Name	NYSE
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		37,677,637
Entity Central Index Key	0001321732
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2022
Document Fiscal Period Focus	Q1
Amendment Flag	false