CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Parenthetical) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Statement of Comprehensive Income [Abstract]
Reclassification adjustment for defined benefit plans included in net income, tax	$ 10	$ 34	$ 29	$ 54
Unrealized gain (loss) on Euro-denominated notes, tax expense (benefit)	224	(110)	729	(575)
Unrealized gain on investments, tax expense (benefit)	0	0	0	2
Reclassification adjustment on investments included in net income, tax	0	0	51	0
Unrealized gain (loss) on foreign currency exchange contracts, tax expense (benefit)	844	46	3,096	20
Unrealized gain (loss) on cross currency swaps, tax expense (benefit)	417	(553)	1,055	(940)
Unrealized gain on interest rate swap, tax expense (benefit)	214	1,107	870	1,093
Reclassification adjustment for (gain) loss included in net income, tax (expense) benefit	$ (713)	$ (127)	$ (1,183)	$ (244)

OCI, Debt Securities, Available-for-Sale, Gain (Loss), Reclassification, Tax

No definition available.

Name:	idxx_OCIDebtSecuritiesAvailableForSaleGainLossReclassificationTax
Namespace Prefix:	idxx_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Other Comprehensive Income (Loss), Cash Flow Hedge, Foreign Exchange Contract, Gain (Loss), before Reclassification, Tax

+ References

No definition available.

+ Details

Name:	idxx_OtherComprehensiveIncomeLossCashFlowHedgeForeignExchangeContractGainLossBeforeReclassificationTax
Namespace Prefix:	idxx_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Other Comprehensive Income (Loss), Cash Flow Hedge, Interest Rate Swap, Gain (Loss), Before Reclassification, Tax

+ References

No definition available.

+ Details

Name:	idxx_OtherComprehensiveIncomeLossCashFlowHedgeInterestRateSwapGainLossBeforeReclassificationTax
Namespace Prefix:	idxx_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Other Comprehensive Income (Loss), Net Investment Hedge, Cross Currency Swaps, Gain (Loss), Before Reclassification, Tax

+ References

No definition available.

+ Details

Name:	idxx_OtherComprehensiveIncomeLossNetInvestmentHedgeCrossCurrencySwapsGainLossBeforeReclassificationTax
Namespace Prefix:	idxx_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Other Comprehensive Income (Loss), Net Investment Hedge, Euro-Denominated Notes, Gain (Loss), After Reclassification, Tax, Attributable to Parent

+ References

No definition available.

+ Details

Name:	idxx_OtherComprehensiveIncomeLossNetInvestmentHedgeEuroDenominatedNotesGainLossAfterReclassificationTaxAttributableToParent
Namespace Prefix:	idxx_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount, after reclassification adjustment, of tax (expense) benefit for (increase) decrease in accumulated other comprehensive income for defined benefit plan, attributable to parent.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 810
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 19
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481231/810-10-45-19

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 45
-Paragraph 20
-SubTopic 10
-Topic 810
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481231/810-10-45-20

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 50
-Paragraph 1A
-Subparagraph (c)(3)
-SubTopic 10
-Topic 810
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481203/810-10-50-1A

+ Details

Name:	us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansTaxPortionAttributableToParent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount, after adjustment, of tax expense (benefit) for unrealized gain (loss) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale) and tax expense (benefit) for unrealized gain (loss) on investment in debt security measured at amortized cost (held-to-maturity) from transfer to available-for-sale.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 220
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 10A
-Subparagraph (e)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482790/220-10-45-10A

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 220
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 10A
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482790/220-10-45-10A

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 220
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 12
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482790/220-10-45-12

+ Details

Name:	us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount of tax expense (benefit) for reclassification of gain (loss) from accumulated other comprehensive income (AOCI) for derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 220
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 12
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482790/220-10-45-12

+ Details

Name:	us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationTax
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- References

No definition available.

+ Details

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