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Disaggregated Revenue by Primary Geographical Market, Major Product Line and Timing of Revenue Recognition (Detail) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2024
 [1]
Jul. 02, 2023
 [1]
Jun. 30, 2024
 [2]
Jul. 02, 2023
 [2]
Disaggregation of Revenue [Line Items]        
Total $ 729,879 $ 684,437 $ 1,329,698 $ 1,301,966
System Test        
Disaggregation of Revenue [Line Items]        
Total 60,801 94,272 136,123 168,903
Wireless Test        
Disaggregation of Revenue [Line Items]        
Total 36,267 43,823 60,856 82,498
Point in Time        
Disaggregation of Revenue [Line Items]        
Total 629,207 580,196 1,125,405 1,092,937
Point in Time | System Test        
Disaggregation of Revenue [Line Items]        
Total 43,519 76,801 101,592 133,658
Point in Time | Wireless Test        
Disaggregation of Revenue [Line Items]        
Total 32,273 40,261 53,187 75,624
Over Time        
Disaggregation of Revenue [Line Items]        
Total 100,672 104,241 204,293 209,029
Over Time | System Test        
Disaggregation of Revenue [Line Items]        
Total 17,282 17,471 34,531 35,245
Over Time | Wireless Test        
Disaggregation of Revenue [Line Items]        
Total 3,994 3,562 7,669 6,874
Asia Pacific        
Disaggregation of Revenue [Line Items]        
Total 576,883 499,492 1,000,557 923,986
Asia Pacific | System Test        
Disaggregation of Revenue [Line Items]        
Total 21,259 41,644 47,040 81,234
Asia Pacific | Wireless Test        
Disaggregation of Revenue [Line Items]        
Total 29,293 22,362 46,434 45,593
Americas        
Disaggregation of Revenue [Line Items]        
Total 92,060 125,049 200,711 243,640
Americas | System Test        
Disaggregation of Revenue [Line Items]        
Total 28,684 40,163 65,278 69,143
Americas | Wireless Test        
Disaggregation of Revenue [Line Items]        
Total 4,901 19,491 10,725 32,337
Europe, Middle East and Africa        
Disaggregation of Revenue [Line Items]        
Total 60,936 59,896 128,430 134,340
Europe, Middle East and Africa | System Test        
Disaggregation of Revenue [Line Items]        
Total 10,858 12,465 23,805 18,526
Europe, Middle East and Africa | Wireless Test        
Disaggregation of Revenue [Line Items]        
Total 2,073 1,970 3,697 4,568
SOC | Semiconductor Test        
Disaggregation of Revenue [Line Items]        
Total 413,584 354,694 715,891 701,528
SOC | Point in Time | Semiconductor Test        
Disaggregation of Revenue [Line Items]        
Total 343,536 282,080 573,127 555,354
SOC | Over Time | Semiconductor Test        
Disaggregation of Revenue [Line Items]        
Total 70,048 72,614 142,764 146,173
SOC | Asia Pacific | Semiconductor Test        
Disaggregation of Revenue [Line Items]        
Total 381,631 303,062 652,197 586,321
SOC | Americas | Semiconductor Test        
Disaggregation of Revenue [Line Items]        
Total 20,211 32,191 42,762 73,759
SOC | Europe, Middle East and Africa | Semiconductor Test        
Disaggregation of Revenue [Line Items]        
Total 11,742 19,441 20,932 41,448
Memory | Semiconductor Test        
Disaggregation of Revenue [Line Items]        
Total 128,980 120,014 238,926 188,189
Memory | Point in Time | Semiconductor Test        
Disaggregation of Revenue [Line Items]        
Total 121,662 112,547 224,098 173,805
Memory | Over Time | Semiconductor Test        
Disaggregation of Revenue [Line Items]        
Total 7,318 7,467 14,828 14,384
Memory | Asia Pacific | Semiconductor Test        
Disaggregation of Revenue [Line Items]        
Total 124,497 115,250 220,103 178,945
Memory | Americas | Semiconductor Test        
Disaggregation of Revenue [Line Items]        
Total 3,254 4,286 12,306 7,230
Memory | Europe, Middle East and Africa | Semiconductor Test        
Disaggregation of Revenue [Line Items]        
Total 1,229 478 6,517 2,014
Universal Robots (UR) | Robotics        
Disaggregation of Revenue [Line Items]        
Total 74,585 57,853 142,346 129,884
Universal Robots (UR) | Point in Time | Robotics        
Disaggregation of Revenue [Line Items]        
Total 72,722 55,737 138,615 125,760
Universal Robots (UR) | Over Time | Robotics        
Disaggregation of Revenue [Line Items]        
Total 1,863 2,116 3,731 4,124
Universal Robots (UR) | Asia Pacific | Robotics        
Disaggregation of Revenue [Line Items]        
Total 14,756 14,883 26,381 28,100
Universal Robots (UR) | Americas | Robotics        
Disaggregation of Revenue [Line Items]        
Total 29,900 22,832 49,905 43,273
Universal Robots (UR) | Europe, Middle East and Africa | Robotics        
Disaggregation of Revenue [Line Items]        
Total 29,929 20,138 66,060 58,511
MiR | Robotics        
Disaggregation of Revenue [Line Items]        
Total 15,662 13,781 35,555 30,964
MiR | Point in Time | Robotics        
Disaggregation of Revenue [Line Items]        
Total 15,495 12,770 34,785 28,735
MiR | Over Time | Robotics        
Disaggregation of Revenue [Line Items]        
Total 167 1,011 770 2,229
MiR | Asia Pacific | Robotics        
Disaggregation of Revenue [Line Items]        
Total 5,447 2,291 8,401 3,793
MiR | Americas | Robotics        
Disaggregation of Revenue [Line Items]        
Total 5,110 6,086 19,735 17,898
MiR | Europe, Middle East and Africa | Robotics        
Disaggregation of Revenue [Line Items]        
Total $ 5,105 $ 5,404 $ 7,419 $ 9,273
[1] Includes $0.8 million and $1.3 million in 2024 and 2023, respectively, for leases of Teradyne’s systems recognized outside Accounting Standards Codification (“ASC”) 606 “Revenue from Contracts with Customers.”
[2] Includes $1.7 million and $2.5 million in 2024 and 2023, respectively, for leases of Teradyne’s systems recognized outside Accounting Standards Codification (“ASC”) 606 “Revenue from Contracts with Customers.”