Entity Information (USD $)	12 Months Ended
Entity Information (USD $)	Dec. 26, 2009	Feb. 22, 2010	Jun. 27, 2009
Entity Information [Line Items]
Entity Registrant Name	Garmin Ltd.
Entity Central Index Key	0001121788
Current Fiscal Year End Date	--12-26
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Filer Category	Large Accelerated Filer
Entity Public Float			$ 2,975,580,700
Entity Common Stock, Shares Outstanding		200,344,095