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Employee Stock Compensation and Savings Plans - Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended				12 Months Ended
	Jun. 30, 2015	Jun. 30, 2011	Jun. 30, 2005	Oct. 31, 2000	Dec. 28, 2024	Dec. 30, 2023	Dec. 31, 2022	Dec. 28, 2013	Jun. 30, 2023
Outstanding options/SAR					0	0	0
Total fair value of vested awards					$ 92,502	$ 77,626	$ 82,734
Closing stock price (in dollars per share)					$ 209.36
Total unrecognized compensation cost related to unvested share-based compensation awards					$ 166,301
Expenses related to other defined contribution plans					$ 93,687	$ 84,609	$ 80,435
Restricted Stock Units
Number of shares granted (in shares)					1,003,000	1,054,000	1,192,000
Outstanding awards weighted-average remaining contract life					1 year 2 months 1 day
Outstanding awards aggregate intrinsic values					$ 369,752
Aggregate intrinsic values					$ 183,639	$ 96,301	$ 74,278
Defined Contribution Retirement Plan [Member] | Garmin International, Inc & Other U.S. - based Subsidiaries Sponsor [Member]
Maximum percentage of annual employee compensation eligible to be contributed to retirement plan					50.00%
2011 Non-employee Directors' Equity Incentive Plan
Maximum number of authorized shares available for issuance (in shares)		122,592							150,000
Award expiration period		10 years
Award vesting period		1 year
Number of shares available for future issuance (in shares)					29,040
2011 Non-employee Directors' Equity Incentive Plan | Restricted Stock Units
Number of shares granted (in shares)					4,360	6,004	6,008
2005 Equity Incentive Plan
Maximum number of authorized shares available for issuance (in shares)			10,000,000					18,000,000
Number of additional authorized shares issued (in shares)					5,000,000			3,000,000
Number of shares available for future issuance (in shares)					5,218,680
2005 Equity Incentive Plan | Restricted Stock Units
Award vesting period			3 years
Number of shares granted (in shares)					998,321	1,047,934	1,185,707
Description of vesting period					RSUs vest evenly over a period of three years
2005 Equity Incentive Plan | Stock Option & Stock Appreciation Rights
Award expiration period			10 years
Award vesting period			5 years
Number of shares granted (in shares)					0	0	0
2000 Equity Incentive Plan
Maximum number of authorized shares available for issuance (in shares)				7,000,000
2000 Equity Incentive Plan | Stock Option & Stock Appreciation Rights
Award expiration period				10 years
Award vesting period				5 years
Number of shares granted (in shares)					0	0	0
Employee Stock Purchase Plan
Maximum number of authorized shares available for issuance (in shares)	10,000,000
Number of shares purchased (in shares)					410,999	524,774	687,370
Total shares purchase price					$ 49,617	$ 43,905	$ 62,154
Number of shares available for future issuance (in shares)					1,851,761
Employee Stock Purchase Plan | Condition One [Member]
Purchase price of common stock (fair market value of the stock on the date of purchase) (in percent)	85.00%
Employee Stock Purchase Plan | Condition Two [Member]
Purchase price of common stock (fair market value of the stock on the date of purchase) (in percent)	85.00%

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