Disaggregated Revenue by Primary Geographical Market, Major Product Line and Timing of Revenue Recognition (Detail) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Disaggregation of Revenue [Line Items]
Total	[1],[2]	$ 2,676,298	$ 3,155,045	$ 3,702,881
System Test
Disaggregation of Revenue [Line Items]
Total	[1]	338,197	469,346	467,739
Wireless Test
Disaggregation of Revenue [Line Items]
Total	[1]	144,282	201,720	216,895
Corporate and Eliminations
Disaggregation of Revenue [Line Items]
Total	[1]		251
Point in Time
Disaggregation of Revenue [Line Items]
Total	[1]	2,259,315	2,772,622	3,335,446
Point in Time | System Test
Disaggregation of Revenue [Line Items]
Total	[1]	268,379	402,074	409,383
Point in Time | Wireless Test
Disaggregation of Revenue [Line Items]
Total	[1]	129,399	189,040	204,247
Point in Time | Corporate and Eliminations
Disaggregation of Revenue [Line Items]
Total	[1]		251
Over Time
Disaggregation of Revenue [Line Items]
Total	[1]	416,983	382,423	367,435
Over Time | System Test
Disaggregation of Revenue [Line Items]
Total	[1]	69,818	67,272	58,356
Over Time | Wireless Test
Disaggregation of Revenue [Line Items]
Total	[1]	14,883	12,680	12,648
Americas
Disaggregation of Revenue [Line Items]
Total	[1]	479,396	475,619	405,736
Americas | System Test
Disaggregation of Revenue [Line Items]
Total	[1]	151,579	146,040	135,230
Americas | Wireless Test
Disaggregation of Revenue [Line Items]
Total	[1]	50,770	47,350	36,173
Americas | Corporate and Eliminations
Disaggregation of Revenue [Line Items]
Total	[1]		251
Europe, Middle East and Africa
Disaggregation of Revenue [Line Items]
Total	[1]	303,891	279,515	265,764
Europe, Middle East and Africa | System Test
Disaggregation of Revenue [Line Items]
Total	[1]	33,231	28,956	25,697
Europe, Middle East and Africa | Wireless Test
Disaggregation of Revenue [Line Items]
Total	[1]	8,097	13,603	8,619
Asia Pacific
Disaggregation of Revenue [Line Items]
Total	[1]	1,893,011	2,399,911	3,031,381
Asia Pacific | System Test
Disaggregation of Revenue [Line Items]
Total	[1]	153,387	294,350	306,812
Asia Pacific | Wireless Test
Disaggregation of Revenue [Line Items]
Total	[1]	85,415	140,767	172,103
SOC | Semiconductor Test
Disaggregation of Revenue [Line Items]
Total	[1]	1,432,621	1,706,884	2,246,730
SOC | Point in Time | Semiconductor Test
Disaggregation of Revenue [Line Items]
Total	[1]	1,141,882	1,445,238	1,989,979
SOC | Over Time | Semiconductor Test
Disaggregation of Revenue [Line Items]
Total	[1]	290,739	261,646	256,751
SOC | Americas | Semiconductor Test
Disaggregation of Revenue [Line Items]
Total	[1]	117,728	122,575	102,702
SOC | Europe, Middle East and Africa | Semiconductor Test
Disaggregation of Revenue [Line Items]
Total	[1]	100,571	69,345	67,381
SOC | Asia Pacific | Semiconductor Test
Disaggregation of Revenue [Line Items]
Total	[1]	1,214,322	1,514,964	2,076,647
Memory | Semiconductor Test
Disaggregation of Revenue [Line Items]
Total	[1]	386,015	373,706	395,612
Memory | Point in Time | Semiconductor Test
Disaggregation of Revenue [Line Items]
Total	[1]	356,417	344,693	365,441
Memory | Over Time | Semiconductor Test
Disaggregation of Revenue [Line Items]
Total	[1]	29,598	29,013	30,171
Memory | Americas | Semiconductor Test
Disaggregation of Revenue [Line Items]
Total	[1]	11,367	11,987	10,665
Memory | Europe, Middle East and Africa | Semiconductor Test
Disaggregation of Revenue [Line Items]
Total	[1]	8,497	1,543	3,503
Memory | Asia Pacific | Semiconductor Test
Disaggregation of Revenue [Line Items]
Total	[1]	366,151	360,176	381,444
Universal Robots (UR) | Robotics
Disaggregation of Revenue [Line Items]
Total	[1]	303,792	325,732	311,182
Universal Robots (UR) | Point in Time | Robotics
Disaggregation of Revenue [Line Items]
Total	[1]	296,252	317,514	305,512
Universal Robots (UR) | Over Time | Robotics
Disaggregation of Revenue [Line Items]
Total	[1]	7,540	8,218	5,670
Universal Robots (UR) | Americas | Robotics
Disaggregation of Revenue [Line Items]
Total	[1]	111,761	112,203	94,897
Universal Robots (UR) | Europe, Middle East and Africa | Robotics
Disaggregation of Revenue [Line Items]
Total	[1]	128,719	139,599	134,829
Universal Robots (UR) | Asia Pacific | Robotics
Disaggregation of Revenue [Line Items]
Total	[1]	63,312	73,930	81,456
MiR | Robotics
Disaggregation of Revenue [Line Items]
Total	[1]	71,391	77,406	64,723
MiR | Point in Time | Robotics
Disaggregation of Revenue [Line Items]
Total	[1]	66,986	73,812	60,884
MiR | Over Time | Robotics
Disaggregation of Revenue [Line Items]
Total	[1]	4,405	3,594	3,839
MiR | Americas | Robotics
Disaggregation of Revenue [Line Items]
Total	[1]	36,191	35,213	26,069
MiR | Europe, Middle East and Africa | Robotics
Disaggregation of Revenue [Line Items]
Total	[1]	24,776	26,469	25,735
MiR | Asia Pacific | Robotics
Disaggregation of Revenue [Line Items]
Total	[1]	$ 10,424	$ 15,724	$ 12,919

[1] Includes $5.2 million, $8.2 million and $13.2 million in 2023, 2022 and 2021, respectively, for leases of Teradyne’s systems recognized outside of ASC 606: “Revenue from Contracts with Customers.”

[2] Revenues attributable to a country are based on location of customer site.