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Schedule of Revenues by Country (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Revenues from External Customers and Long-Lived Assets [Line Items]      
Revenue from unaffiliated customers [1],[2] $ 3,155,045 $ 3,702,881 $ 3,121,469
TAIWAN      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Revenue from unaffiliated customers [2] 626,424 1,117,874 1,178,068
KOREA      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Revenue from unaffiliated customers [2] 544,816 502,167 391,571
CHINA      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Revenue from unaffiliated customers [2] 491,798 631,963 465,722
UNITED STATES      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Revenue from unaffiliated customers [2] 469,948 392,626 321,674
Europe      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Revenue from unaffiliated customers [2] 268,384 259,954 205,587
JAPAN      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Revenue from unaffiliated customers [2] 162,920 166,231 143,983
MALAYSIA      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Revenue from unaffiliated customers [2] 142,203 136,774 56,096
THAILAND      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Revenue from unaffiliated customers [2] 137,356 138,812 138,787
PHILIPPINES      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Revenue from unaffiliated customers [2] 124,107 166,838 68,887
SINGAPORE      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Revenue from unaffiliated customers [2] 99,503 121,582 76,460
Rest Of The World      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Revenue from unaffiliated customers [2] $ 87,586 $ 68,060 $ 74,634
[1] Includes $8.2 million, $13.2 million and $10.0 million in 2022, 2021 and 2020, 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.