Cover Page - shares	6 Months Ended
	Sep. 30, 2021	Oct. 13, 2021
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Sep. 30, 2021
Document Transition Report	false
Entity File Number	0-29174
Entity Registrant Name	LOGITECH INTERNATIONAL S.A.
Entity Incorporation, State or Country Code	V8
Entity Address, Address Line One	1015 Lausanne
Entity Address, Country	CH
Entity Address, Address Line Two	c/o Logitech Inc.
Entity Address, Address Line Three	7700 Gateway Boulevard
Entity Address, City or Town	Newark
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	94560
City Area Code	510
Local Phone Number	795-8500
Title of 12(b) Security	Registered Shares
Trading Symbol	LOGI
Security Exchange Name	NASDAQ
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		167,474,200
Entity Central Index Key	0001032975
Amendment Flag	false
Current Fiscal Year End Date	--03-31
Document Fiscal Year Focus	2022
Document Fiscal Period Focus	Q2