XML 39 R28.htm IDEA: XBRL DOCUMENT v3.22.2.2

Accounting Policies - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 25, 2021	Sep. 25, 2021
Accounting Policies [Abstract]
Reclassification from research and development expense to selling, general and administrative expense	$ 15,132	$ 44,455

X

- Definition

Reclassification from research and development expense to selling, general and administrative expense.

+ References

No definition available.

+ Details

Name:	grmn_ReclassificationFromResearchAndDevelopmentExpenseToSellingGeneralAndAdministrativeExpense
Namespace Prefix:	grmn_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- References

No definition available.

+ Details

Name:	us-gaap_AccountingPoliciesAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration