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Financial Instruments - Additional Information (Detail) - USD ($)
3 Months Ended 6 Months Ended 12 Months Ended
Jun. 28, 2020
Jun. 30, 2019
Jun. 28, 2020
Jun. 30, 2019
Dec. 31, 2019
Financial Instruments and Fair Value [Line Items]          
Available-for-sale securities, realized gain $ 1,600,000 $ 100,000 $ 3,000,000.0 $ 200,000  
Available-for-sale securities, realized loss 100,000   200,000 100,000  
Fair market value of investments with unrealized losses less than one year 20,200,000   20,200,000   $ 23,600,000
Unrealized Gain (loss) on contracts 400,000 1,300,000 1,600,000 1,900,000  
Equity securities unrealized gain loss   $ 900,000   $ 3,700,000  
Equity securities unrealized (gains) loss 3,700,000   6,000,000.0    
Debt Mutual Funds          
Financial Instruments and Fair Value [Line Items]          
Available for sale securities with out contractual maturity date 6,900   6,900    
Mobile Industrial Robots (MiR)          
Financial Instruments and Fair Value [Line Items]          
Maximum amount of contingent consideration paid for acquisition 63,500,000   63,500,000    
Autoguide LLC [Member]          
Financial Instruments and Fair Value [Line Items]          
Maximum amount of contingent consideration paid for acquisition $ 106,900,000   106,900,000    
Foreign Exchange Contracts          
Financial Instruments and Fair Value [Line Items]          
Unrealized Gain (loss) on contracts     $ 125,000,000.0   $ 144,900,000