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v3.10.0.1

Goodwill and Intangible Assets, Net (Schedule of Estimated Useful Lives For Intangible Assets) (Details) | 12 Months Ended
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Dec. 31, 2018
Product rights | Maximum |
Property, Plant and Equipment [Line Items] |
Intangible assets, estimated useful life | 15 years
Product rights | Minimum |
Property, Plant and Equipment [Line Items] |
Intangible assets, estimated useful life | 5 years
Customer-related intangible assets | Maximum |
Property, Plant and Equipment [Line Items] |
Intangible assets, estimated useful life | 17 years
Customer-related intangible assets | Minimum |
Property, Plant and Equipment [Line Items] |
Intangible assets, estimated useful life | 5 years
Noncompete agreements | Maximum |
Property, Plant and Equipment [Line Items] |
Intangible assets, estimated useful life | 5 years
Noncompete agreements | Minimum |
Property, Plant and Equipment [Line Items] |
Intangible assets, estimated useful life | 3 years

X
- Definition Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
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
Name: | us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=idxx_ProductRightsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | srt_RangeAxis=srt_MaximumMember
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: |