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Schedule of Segment Information (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Segment Reporting Information [Line Items]      
Revenues [1],[2] $ 3,155,045 $ 3,702,881 $ 3,121,469
Income (loss) before taxes [3],[4] 840,385 1,160,955 901,015
Total assets [5] 3,501,252 3,809,425 3,652,346
Property additions 163,249 132,472 184,977
Depreciation and amortization expense 110,675 125,485 126,743
Semiconductor Test      
Segment Reporting Information [Line Items]      
Revenues 2,080,590 2,642,342 2,259,597
Income (loss) before taxes [3],[4] 634,488 976,988 739,695
Total assets [5] 1,382,623 1,245,596 1,070,378
Property additions 126,898 115,618 168,055
Depreciation and amortization expense 76,532 75,982 64,998
System Test      
Segment Reporting Information [Line Items]      
Revenues [1] 469,346 467,739 409,729
Income (loss) before taxes [3],[4] 166,879 163,064 152,092
Total assets [5] 165,925 170,954 138,295
Property additions 7,275 3,905 3,092
Depreciation and amortization expense 3,235 3,156 3,426
Robotics      
Segment Reporting Information [Line Items]      
Revenues 403,138 375,905 279,731
Income (loss) before taxes [3],[4] (16,244) (8,167) (24,019)
Total assets [5] 665,638 701,196 712,936
Property additions 25,712 9,821 8,899
Depreciation and amortization expense 25,339 27,336 36,242
Wireless Test      
Segment Reporting Information [Line Items]      
Revenues [1] 201,720 216,895 173,016
Income (loss) before taxes [3],[4] 66,820 83,543 41,950
Total assets [5] 94,298 107,513 106,273
Property additions 3,364 3,128 4,931
Depreciation and amortization expense 4,991 6,055 6,258
Corporate and Eliminations [Member]      
Segment Reporting Information [Line Items]      
Revenues 251   (604)
Income (loss) before taxes [3],[4] (11,558) (54,473) (8,703)
Total assets [5] 1,192,768 1,584,166 1,624,464
Depreciation and amortization expense $ 578 $ 12,956 $ 15,819
[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.
[3] Included in Corporate and Eliminations are interest income, interest expense, net foreign exchange gains (losses), net cash flow hedge gains (losses), intercompany eliminations, pension and postretirement plan actuarial gains (losses), legal and environmental fees, contingent consideration adjustments, acquisition related charges and compensation, gain on sale of asset, and loss on convertible debt conversions in 2021.
[4] Included in income (loss) before taxes are charges and credits related to restructuring and other, inventory charges and loss on convertible debt conversions in 2021.
[5] Total assets are attributable to each segment. Corporate assets consist of cash and cash equivalents, marketable securities and certain other assets.