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IDEXX Retirement and Incentive Savings Plan | 12 Months Ended
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Dec. 31, 2018
Defined Contribution Plan [Abstract] |
IDEXX Retirement and Incentive Savings Plan | IDEXX RETIREMENT AND INCENTIVE SAVINGS PLAN We have established the IDEXX Retirement and Incentive Savings Plan (the “401(k) Plan”). U.S. employees eligible to participate in the 401(k) Plan may contribute specified percentages of their salaries. Beginning January 1, 2018, we matched a portion of these contributions, not to exceed 5% of participants’ eligible compensation. Prior to January 1, 2018, we matched a portion of these contributions, not to exceed 4% of participants' eligible compensation. We matched $19.0 million, $13.8 million, and $12.5 million for the years ended December 31, 2018, 2017 and 2016, respectively. In addition, we may make contributions to the 401(k) Plan at the discretion of the Board of Directors. There were no discretionary contributions in 2018, 2017 or 2016. We also have established defined contribution plans for regional employees in Europe and in Canada. With respect to these plans, our contributions over the past three years have not been material.

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- Definition The entire disclosure for pension and other postretirement benefits. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -URI http://asc.fasb.org/topic&trid=2235017 + Details
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