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v3.20.2

Revenues - Information about Operations in Different Geographic Areas (Detail) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2020 | Sep. 30, 2019 | Sep. 30, 2020 | Sep. 30, 2019
Segment Reporting Information [Line Items] |  |  |  |
Net sales | $ 1,126,942 | $ 1,276,633 | $ 3,341,082 | $ 3,853,736
United States |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net sales | 578,184 | 673,972 | 1,747,544 | 2,014,565
United Kingdom |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net sales | 40,145 | 53,857 | 124,255 | 148,542
European Union countries |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net sales | 175,879 | 197,537 | 529,549 | 610,938
Asia |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net sales | 235,750 | 236,766 | 653,051 | 711,588
Other foreign countries |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net sales | 96,984 | 114,501 | 286,683 | 368,103
International |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net sales | 548,758 | 602,661 | 1,593,538 | 1,839,171
Non-US |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net sales | 303,200 | 317,600 | 866,300 | 965,100
Electronic Instruments Group |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net sales | 748,372 | 815,552 | 2,170,479 | 2,442,710
Electronic Instruments Group | United States |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net sales | 379,744 | 421,629 | 1,125,046 | 1,250,564
Electronic Instruments Group | United Kingdom |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net sales | 11,488 | 19,538 | 39,708 | 47,885
Electronic Instruments Group | European Union countries |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net sales | 97,028 | 99,180 | 282,605 | 302,800
Electronic Instruments Group | Asia |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net sales | 188,254 | 190,419 | 514,189 | 569,553
Electronic Instruments Group | Other foreign countries |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net sales | 71,858 | 84,786 | 208,931 | 271,908
Electronic Instruments Group | International |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net sales | 368,628 | 393,923 | 1,045,433 | 1,192,146
Electromechanical Group |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net sales | 378,570 | 461,081 | 1,170,603 | 1,411,026
Electromechanical Group | United States |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net sales | 198,440 | 252,343 | 622,498 | 764,001
Electromechanical Group | United Kingdom |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net sales | 28,657 | 34,319 | 84,547 | 100,657
Electromechanical Group | European Union countries |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net sales | 78,851 | 98,357 | 246,944 | 308,138
Electromechanical Group | Asia |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net sales | 47,496 | 46,347 | 138,862 | 142,035
Electromechanical Group | Other foreign countries |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net sales | 25,126 | 29,715 | 77,752 | 96,195
Electromechanical Group | International |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net sales | $ 180,130 | $ 208,738 | $ 548,105 | $ 647,025

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