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Fair Value of Financial Assets and Financial Liabilities (Details) - USD ($)
$ in Millions
Jan. 01, 2021
Oct. 02, 2020
Fair Value Disclosure | Fair Value, Measurements, Recurring    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair value of debt $ 8,435.7 $ 9,260.0
Carrying Value Disclosure    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Carrying value of debt $ 8,209.5 $ 9,278.4