CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Statement of Comprehensive Income [Abstract]
Net income	$ 180,938	$ 175,178	$ 506,882	$ 582,073
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustments	(31,220)	(12,967)	(59,024)	(20,213)
Benefit plans, net of tax expense of $0 and $(991) in 2022 and $0 and $0 in 2021	0	0	(5,056)	0
Reclassification adjustment for benefit plans included in net income, net of tax of $23 and $74 in 2022 and $0 and $0 in 2021	118	0	378	0
Unrealized gain on Euro-denominated notes, net of tax expense (benefit) of $1,713 and $3,438 in 2022 and $498 and $1,335 in 2021	5,495	1,581	11,028	4,235
Unrealized (loss) on investments, net of tax expense (benefit) of $(3) and $(15) in 2022 and $0 and $48 in 2021	(10)	(1)	(52)	153
Unrealized gain (loss) on derivative instruments:
Unrealized gain on foreign currency exchange contracts, net of tax expense (benefit) of $4,634 and $10,368 in 2022 and $940 and $1,595 in 2021	13,490	4,109	26,930	7,300
Unrealized gain on cross currency swaps, net of tax expense (benefit) of $1,657 and $3,303 in 2022 and $744 and $1,438 in 2021	5,319	2,359	10,597	4,561
Reclassification adjustment for (gain) included in net income, net of tax benefit (expense) of $(2,254) and $(4,441) in 2022 and $330 and $1,206 in 2021	(6,381)	1,253	(12,211)	5,522
Unrealized gain on derivative instruments	12,428	7,721	25,316	17,383
Other comprehensive (gain) loss, net of tax	(13,189)	(3,666)	(27,410)	1,558
Comprehensive income	167,749	171,512	479,472	583,631
Less: Comprehensive loss attributable to noncontrolling interest	0	(57)	0	(1)
Comprehensive income attributable to IDEXX Laboratories, Inc.	$ 167,749	$ 171,569	$ 479,472	$ 583,632