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FAIR VALUE - Additional Information (Detail) - USD ($)
9 Months Ended
Jun. 28, 2019
Sep. 28, 2018
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Equity investments in privately-held companies $ 61,200,000 $ 37,200,000
Increase in equity investments in privately-held companies 2,000,000.0  
Impairment charges or adjustments from observable price changes for equity investments without readily determinable fair value 0  
Notes Receivable    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Long-term 32,600,000 29,700,000
C P T C | Term Loan    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Modified former loans receivable $ 44,000,000.0 $ 44,000,000.0
Minimum    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Derivative, term of contract 1 month  
Maximum    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Derivative, term of contract 13 months