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v3.25.2

Segment Information and Geographic Data - Schedule of Net Sales to External Customers by Geographic Region (Details) (Parenthetical) | 6 Months Ended
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Jun. 28, 2025
Minimum [Member] | UNITED STATES | Revenue Benchmark [Member] | Customer Concentration Risk [Member] |
Segment Reporting Information [Line Items] |
Concentration risk net sales | 10.00%

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- Definition Concentration Risk Threshold Percentage + References No definition available. + Details
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Namespace Prefix: | grmn_
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Balance Type: | na
Period Type: | duration

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |