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Fair Value Measurements (Details Textual) - USD ($)
$ in Thousands
3 Months Ended
Jan. 02, 2021
Mar. 28, 2020
May 30, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Cost Method Investments, Fair Value Disclosure $ 107,400    
Three Point Zero Percent 2021 Senior Debentures [Member]      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Debt Instrument, Face Amount $ 500,000    
Debt Instrument, Interest Rate, Stated Percentage 3.00%    
Debt Instrument, Maturity Date Mar. 15, 2021    
Fair value of convertible notes $ 502,700    
Two Point and Nine Five Percent 2024 Senior Debentures [Member]      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Debt Instrument, Face Amount $ 750,000    
Debt Instrument, Interest Rate, Stated Percentage 2.95%    
Debt Instrument, Maturity Date Jun. 01, 2024    
Fair value of convertible notes $ 807,800    
Two Point and Three Seven Five Percent 2030 Senior Debentures [Member]      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Debt Instrument, Face Amount $ 750,000    
Debt Instrument, Interest Rate, Stated Percentage 2.375%    
Debt Instrument, Maturity Date Jun. 01, 2030    
Fair value of convertible notes $ 785,200    
Two Point and Nine Five Percent 2024 Senior Debentures [Member]      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Debt Instrument, Face Amount $ 750,000 $ 750,000  
Debt Instrument, Interest Rate, Stated Percentage     2.95%