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Income Taxes (Details) - USD ($)
$ in Millions
3 Months Ended
Dec. 27, 2019
Dec. 28, 2018
Income Tax Disclosure [Abstract]    
Document Period End Date Dec. 27, 2019  
United States income taxes $ 11.5 $ 29.5
Foreign income taxes 10.1 9.4
Provision for income taxes $ 21.6 $ 38.9
Effective tax rate 7.80% 12.00%