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Revenues - Timing of Revenue Recognition (Detail) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2022
Jun. 30, 2021
Disaggregation of Revenue [Line Items]        
Net sales $ 1,514,552 $ 1,386,346 $ 2,973,077 $ 2,602,088
Products transferred at a point in time        
Disaggregation of Revenue [Line Items]        
Net sales 1,263,454 1,176,083 2,489,056 2,206,366
Products and services transferred over time        
Disaggregation of Revenue [Line Items]        
Net sales 251,098 210,263 484,021 395,722
Electronic Instruments Group        
Disaggregation of Revenue [Line Items]        
Net sales 1,028,248 933,934 2,016,007 1,724,858
Electronic Instruments Group | Products transferred at a point in time        
Disaggregation of Revenue [Line Items]        
Net sales 839,948 767,514 1,652,896 1,414,766
Electronic Instruments Group | Products and services transferred over time        
Disaggregation of Revenue [Line Items]        
Net sales 188,300 166,420 363,111 310,092
Electromechanical Group        
Disaggregation of Revenue [Line Items]        
Net sales 486,304 452,412 957,070 877,230
Electromechanical Group | Products transferred at a point in time        
Disaggregation of Revenue [Line Items]        
Net sales 423,506 408,569 836,160 791,600
Electromechanical Group | Products and services transferred over time        
Disaggregation of Revenue [Line Items]        
Net sales $ 62,798 $ 43,843 $ 120,910 $ 85,630