CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Statement of Comprehensive Income [Abstract]
Net income	$ 131,979	$ 202,606	$ 325,944	$ 406,895
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustments	(31,081)	12,087	(27,804)	(7,246)
Benefit plans, net of tax expense of $(991) and $(991) in 2022 and $0 and $0 in 2021	(5,056)	0	(5,056)	0
Reclassification adjustment for benefit plans included in net income, net of tax of $51 and $51 in 2022 and $0 and $0 in 2021	260	0	260	0
Unrealized gain (loss) on Euro-denominated notes, net of tax expense (benefit) of $1,286 and $1,725 in 2022 and $(313) and $837 in 2021	4,124	(994)	5,533	2,654
Unrealized gain (loss) on investments, net of tax expense (benefit) of $(7) and $(12) in 2022 and $2 and $48 in 2021	(25)	7	(42)	154
Unrealized gain (loss) on derivative instruments:
Unrealized gain (loss) on foreign currency exchange contracts, net of tax expense (benefit) of $4,298 and $5,734 in 2022 and $(594) and $655 in 2021	11,343	(1,224)	13,440	3,191
Unrealized gain (loss) on cross currency swaps, net of tax expense (benefit) of $1,335 and $1,646 in 2022 and $(349) and $694 in 2021	4,282	(1,106)	5,278	2,202
Reclassification adjustment for loss (gain) included in net income, net of tax benefit (expense) of $(1,577) and $(2,187) in 2022 and $340 and $876 in 2021	(4,204)	2,375	(5,830)	4,269
Unrealized gain on derivative instruments	11,421	45	12,888	9,662
Other comprehensive gain (loss), net of tax	(20,357)	11,145	(14,221)	5,224
Comprehensive income	111,622	213,751	311,723	412,119
Less: Comprehensive income attributable to noncontrolling interest	0	24	0	56
Comprehensive income attributable to IDEXX Laboratories, Inc.	$ 111,622	$ 213,727	$ 311,723	$ 412,063