Accounting Policies	9 Months Ended
Sep. 24, 2022
Accounting Policies [Abstract]
Accounting Policies	1. Accounting Policies Basis of Presentation and Principles of Consolidation The accompanying unaudited condensed consolidated financial statements include the accounts of Garmin Ltd. and wholly-owned subsidiaries (collectively, 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, all adjustments (consisting of normal recurring accruals) considered necessary for a fair presentation have been included. The condensed consolidated balance sheet at December 25, 2021 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 25, 2021. Operating results for the 13-week and 39-week periods ended September 24, 2022 are not necessarily indicative of the results that may be expected for the year ending December 31, 2022. 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 September 24, 2022 and September 25, 2021 both contain operating results for 13 weeks. Changes in Classification and Allocation Certain prior period amounts have been reclassified or presented to conform to the current period presentation. In the first quarter of fiscal 2022, the Company refined the methodology used in classifying certain indirect costs in accordance with the way the Company's management is now using the information in decision making, which management believes provides a more meaningful representation of costs incurred to support research and development activities. As a result, the Company’s condensed consolidated statements of income have been recast for the 13-week and 39-week periods ended September 25, 2021 to reflect reclassifications of $15,132 and $44,455, respectively, from research and development expense to selling, general, and administrative expense. Additionally, in the first quarter of fiscal 2022, the methodology used to allocate certain selling, general, and administrative expenses to the segments was refined to allocate these expenses in a more direct manner to provide the Company's Chief Operating Decision Maker (CODM) with a more meaningful representation of segment profit or loss. The Company’s composition of operating segments and reportable segments did not change. These changes in classification and allocation had no effect on the Company’s consolidated operating or net income. 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 2, “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 25, 2021. There were no material changes to the Company’s significant accounting policies during the 39-week period ended September 24, 2022. Recently Issued Accounting Standards and Pronouncements Recently adopted accounting standards and recently issued accounting pronouncements not yet adopted are not expected to have a material impact on the Company’s consolidated financial statements, accounting policies, processes, or systems.

Accounting Policies

9 Months Ended

Sep. 24, 2022

1. Accounting Policies

Basis of Presentation and Principles of Consolidation

The accompanying unaudited condensed consolidated financial statements include the accounts of Garmin Ltd. and wholly-owned subsidiaries (collectively, 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, all adjustments (consisting of normal recurring accruals) considered necessary for a fair presentation have been included. The condensed consolidated balance sheet at December 25, 2021 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 25, 2021. Operating results for the 13-week and 39-week periods ended September 24, 2022 are not necessarily indicative of the results that may be expected for the year ending December 31, 2022.

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 September 24, 2022 and September 25, 2021 both contain operating results for 13 weeks.

Changes in Classification and Allocation

Certain prior period amounts have been reclassified or presented to conform to the current period presentation.

In the first quarter of fiscal 2022, the Company refined the methodology used in classifying certain indirect costs in accordance with the way the Company's management is now using the information in decision making, which management believes provides a more meaningful representation of costs incurred to support research and development activities. As a result, the Company’s condensed consolidated statements of income have been recast for the 13-week and 39-week periods ended September 25, 2021 to reflect reclassifications of $15,132 and $44,455, respectively, from research and development expense to selling, general, and administrative expense.

Additionally, in the first quarter of fiscal 2022, the methodology used to allocate certain selling, general, and administrative expenses to the segments was refined to allocate these expenses in a more direct manner to provide the Company's Chief Operating Decision Maker (CODM) with a more meaningful representation of segment profit or loss. The Company’s composition of operating segments and reportable segments did not change.

These changes in classification and allocation had no effect on the Company’s consolidated operating or net income.

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 2, “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 25, 2021. There were no material changes to the Company’s significant accounting policies during the 39-week period ended September 24, 2022.

Recently Issued Accounting Standards and Pronouncements

Recently adopted accounting standards and recently issued accounting pronouncements not yet adopted are not expected to have a material impact on the Company’s consolidated financial statements, accounting policies, processes, or systems.