CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Statement of Comprehensive Income [Abstract]
Net income	$ 193,965	$ 204,289
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustments	3,277	(19,333)
Unrealized gain (loss) on Euro-denominated notes, net of tax expense (benefit) of $439 in 2022 and $1,150 in 2021	1,409	3,648
Unrealized gain (loss) on investments, net of tax expense (benefit) of $(5) in 2022 and $46 in 2021	(17)	147
Unrealized gain (loss) on derivative instruments:
Unrealized gain on foreign currency exchange contracts, net of tax expense (benefit) of $1,436 in 2022 and $1,249 in 2021	2,097	4,415
Unrealized gain on cross currency swaps, net of tax expense (benefit) of $311 in 2022 and $1,043 in 2021	996	3,308
Reclassification adjustment for loss (gain) included in net income, net of tax benefit (expense) of $(610) in 2022 and $536 in 2021	(1,626)	1,894
Unrealized gain on derivative instruments	1,467	9,617
Other comprehensive gain (loss), net of tax	6,136	(5,921)
Comprehensive income	200,101	198,368
Less: Comprehensive income attributable to noncontrolling interest	0	32
Comprehensive income attributable to IDEXX Laboratories, Inc.	$ 200,101	$ 198,336