Accounting Policies (Policies)	3 Months Ended
Mar. 29, 2025
Accounting Policies [Abstract]
Basis of Presentation and Principles of Consolidation	Basis of Presentation and Principles of Consolidation The accompanying unaudited condensed consolidated financial statements include the accounts of Garmin Ltd. and its wholly-owned subsidiaries (collectively, we, our, us, the Company or Garmin). Intercompany balances and transactions have been eliminated. The condensed consolidated financial statements have been prepared in accordance with generally accepted accounting principles for interim financial information and with the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by generally accepted accounting principles for complete financial statements. In the opinion of management, the condensed consolidated financial statements reflect all adjustments, which are normal and recurring in nature, necessary for fair financial statement presentation. The condensed consolidated balance sheet at December 28, 2024 has been derived from the audited financial statements at that date, but does not include all of the information and footnotes required by generally accepted accounting principles for complete financial statements. Additionally, the condensed consolidated financial statements should be read in conjunction with Part I, Item 2, “Management’s Discussion and Analysis of Financial Condition and Results of Operations” of this Form 10-Q, and the Company’s Annual Report on Form 10-K for the year ended December 28, 2024. The Company's operating results are subject to fluctuations associated with seasonal demand for consumer products, the timing of new product introductions, and original equipment manufacturer (OEM) customer production schedules. Therefore, operating results for the 13-week period ended March 29, 2025 are not necessarily indicative of the results that may be expected for the year ending December 27, 2025. The Company’s fiscal year is based on a 52- or 53-week period ending on the last Saturday of the calendar year. Therefore, the financial results of certain 53-week fiscal years, and the associated 14-week quarters, will not be exactly comparable to the prior and subsequent 52-week fiscal years and the associated 13-week quarters. The quarters ended March 29, 2025 and March 30, 2024 both contain operating results for 13 weeks.
Significant Accounting Policies	Significant Accounting Policies For a description of the significant accounting policies and methods used in the preparation of the Company’s condensed consolidated financial statements, refer to Note 1, “Summary of Significant Accounting Policies” in the Notes to the Consolidated Financial Statements in Part II, Item 8 of the Company’s Annual Report on Form 10-K for the fiscal year ended December 28, 2024. There were no material changes to the Company’s significant accounting policies during the 13-week period ended March 29, 2025.
Recently Adopted Accounting Standards and Not Yet Adopted Accounting Pronouncements	Recently Adopted Accounting Standards There are no recently adopted accounting standards that have a material impact on the Company's consolidated financial statements, accounting policies, processes, or systems. Recently Issued Accounting Pronouncements Not Yet Adopted Disaggregation of Income Statement Expenses In November 2024, the Financial Accounting Standards Board issued Accounting Standards Update No. 2024-03, Income Statement–Reporting Comprehensive Income–Expense Disaggregation Disclosures (Subtopic 220-40): Disaggregation of Income Statement Expenses ("ASU 2024-03"), which requires additional disaggregated disclosures in the notes to financial statements for certain categories of expenses that are included in the expense captions on the face of the statements of income, on an interim and annual basis. ASU 2024-03 is effective for fiscal years beginning after December 15, 2026 and interim reporting periods beginning after December 15, 2027, with early adoption permitted. The amendments may be applied using either a prospective or retrospective approach. The Company is currently evaluating the impact that the updated standard will have on its financial statement disclosures.

Accounting Policies (Policies)

3 Months Ended

Mar. 29, 2025

Basis of Presentation and Principles of Consolidation

The accompanying unaudited condensed consolidated financial statements include the accounts of Garmin Ltd. and its wholly-owned subsidiaries (collectively, we, our, us, the Company or Garmin). Intercompany balances and transactions have been eliminated.

The condensed consolidated financial statements have been prepared in accordance with generally accepted accounting principles for interim financial information and with the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by generally accepted accounting principles for complete financial statements. In the opinion of management, the condensed consolidated financial statements reflect all adjustments, which are normal and recurring in nature, necessary for fair financial statement presentation. The condensed consolidated balance sheet at December 28, 2024 has been derived from the audited financial statements at that date, but does not include all of the information and footnotes required by generally accepted accounting principles for complete financial statements. Additionally, the condensed consolidated financial statements should be read in conjunction with Part I, Item 2, “Management’s Discussion and Analysis of Financial Condition and Results of Operations” of this Form 10-Q, and the Company’s Annual Report on Form 10-K for the year ended December 28, 2024.

The Company's operating results are subject to fluctuations associated with seasonal demand for consumer products, the timing of new product introductions, and original equipment manufacturer (OEM) customer production schedules. Therefore, operating results for the 13-week period ended March 29, 2025 are not necessarily indicative of the results that may be expected for the year ending December 27, 2025.

The Company’s fiscal year is based on a 52- or 53-week period ending on the last Saturday of the calendar year. Therefore, the financial results of certain 53-week fiscal years, and the associated 14-week quarters, will not be exactly comparable to the prior and subsequent 52-week fiscal years and the associated 13-week quarters. The quarters ended March 29, 2025 and March 30, 2024 both contain operating results for 13 weeks.

Significant Accounting Policies

For a description of the significant accounting policies and methods used in the preparation of the Company’s condensed consolidated financial statements, refer to Note 1, “Summary of Significant Accounting Policies” in the Notes to the Consolidated Financial Statements in Part II, Item 8 of the Company’s Annual Report on Form 10-K for the fiscal year ended December 28, 2024. There were no material changes to the Company’s significant accounting policies during the 13-week period ended March 29, 2025.

Recently Adopted Accounting Standards and Not Yet Adopted Accounting Pronouncements

Recently Adopted Accounting Standards

There are no recently adopted accounting standards that have a material impact on the Company's consolidated financial statements, accounting policies, processes, or systems.

Recently Issued Accounting Pronouncements Not Yet Adopted

Disaggregation of Income Statement Expenses

In November 2024, the Financial Accounting Standards Board issued Accounting Standards Update No. 2024-03, Income Statement–Reporting Comprehensive Income–Expense Disaggregation Disclosures (Subtopic 220-40): Disaggregation of Income Statement Expenses ("ASU 2024-03"), which requires additional disaggregated disclosures in the notes to financial statements for certain categories of expenses that are included in the expense captions on the face of the statements of income, on an interim and annual basis. ASU 2024-03 is effective for fiscal years beginning after December 15, 2026 and interim reporting periods beginning after December 15, 2027, with early adoption permitted. The amendments may be applied using either a prospective or retrospective approach. The Company is currently evaluating the impact that the updated standard will have on its financial statement disclosures.