REVENUE (Disaggregation of Revenue by Major Product and Service Categories) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Disaggregation of Revenue [Line Items]
Total revenue	$ 3,897,504	$ 3,660,953	$ 3,367,324
Segment revenue
Disaggregation of Revenue [Line Items]
Total revenue	3,881,216	3,642,164	3,337,120
Other segment revenue
Disaggregation of Revenue [Line Items]
Total revenue	16,288	18,789	30,204
CAG segment revenue | Segment revenue
Disaggregation of Revenue [Line Items]
Total revenue	3,574,044	3,352,356	3,058,793
Water segment revenue | Segment revenue
Disaggregation of Revenue [Line Items]
Total revenue	185,112	168,149	155,720
LPD segment revenue | Segment revenue
Disaggregation of Revenue [Line Items]
Total revenue	122,060	121,659	122,607
CAG Diagnostics recurring revenue: | CAG segment revenue | Segment revenue
Disaggregation of Revenue [Line Items]
Total revenue	3,129,492	2,935,425	2,660,280
IDEXX VetLab consumables | CAG segment revenue | Segment revenue
Disaggregation of Revenue [Line Items]
Total revenue	1,303,250	1,188,261	1,057,236
Rapid assay products | CAG segment revenue | Segment revenue
Disaggregation of Revenue [Line Items]
Total revenue	359,754	344,494	313,667
Reference laboratory diagnostic and consulting services | CAG segment revenue | Segment revenue
Disaggregation of Revenue [Line Items]
Total revenue	1,336,121	1,278,617	1,178,113
CAG Diagnostics services and accessories | CAG segment revenue | Segment revenue
Disaggregation of Revenue [Line Items]
Total revenue	130,367	124,053	111,264
CAG Diagnostics capital - instruments | CAG segment revenue | Segment revenue
Disaggregation of Revenue [Line Items]
Total revenue	131,928	137,603	147,326
Veterinary software, services and diagnostic imaging systems: | CAG segment revenue | Segment revenue
Disaggregation of Revenue [Line Items]
Total revenue	312,624	279,328	251,187
Recurring revenue | CAG segment revenue | Segment revenue
Disaggregation of Revenue [Line Items]
Total revenue	250,359	214,597	180,973
Systems and hardware | CAG segment revenue | Segment revenue
Disaggregation of Revenue [Line Items]
Total revenue	$ 62,265	$ 64,731	$ 70,214