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v3.21.2

Revenues - Information About Operations in Different Geographic Areas (Detail) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2021 | Jun. 30, 2020 | Jun. 30, 2021 | Jun. 30, 2020
Segment Reporting Information [Line Items] |  |  |  |
Net sales | $ 1,386,346 | $ 1,011,922 | $ 2,602,088 | $ 2,214,140
United States |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net sales | 720,951 | 528,126 | 1,320,034 | 1,169,360
United Kingdom |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net sales | 49,217 | 36,179 | 101,215 | 84,110
European Union countries |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net sales | 221,460 | 159,228 | 420,422 | 353,670
Asia |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net sales | 283,303 | 208,726 | 542,058 | 417,301
Other foreign countries |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net sales | 111,415 | 79,663 | 218,359 | 189,699
International |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net sales | 665,395 | 483,796 | 1,282,054 | 1,044,780
Non-US |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net sales | 365,500 | 257,900 | 696,400 | 563,100
Electronic Instruments Group |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net sales | 933,934 | 647,882 | 1,724,858 | 1,422,107
Electronic Instruments Group | United States |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net sales | 495,039 | 338,757 | 883,940 | 745,302
Electronic Instruments Group | United Kingdom |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net sales | 20,649 | 13,427 | 42,596 | 28,220
Electronic Instruments Group | European Union countries |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net sales | 117,856 | 79,901 | 221,521 | 185,577
Electronic Instruments Group | Asia |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net sales | 217,854 | 161,190 | 415,415 | 325,935
Electronic Instruments Group | Other foreign countries |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net sales | 82,536 | 54,607 | 161,386 | 137,073
Electronic Instruments Group | International |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net sales | 438,895 | 309,125 | 840,918 | 676,805
Electromechanical Group |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net sales | 452,412 | 364,040 | 877,230 | 792,033
Electromechanical Group | United States |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net sales | 225,912 | 189,369 | 436,094 | 424,058
Electromechanical Group | United Kingdom |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net sales | 28,568 | 22,752 | 58,619 | 55,890
Electromechanical Group | European Union countries |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net sales | 103,604 | 79,327 | 198,901 | 168,093
Electromechanical Group | Asia |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net sales | 65,449 | 47,536 | 126,643 | 91,366
Electromechanical Group | Other foreign countries |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net sales | 28,879 | 25,056 | 56,973 | 52,626
Electromechanical Group | International |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net sales | $ 226,500 | $ 174,671 | $ 441,136 | $ 367,975

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