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Income Taxes (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Mar. 27, 2020
Mar. 29, 2019
Mar. 27, 2020
Mar. 29, 2019
Income Tax Disclosure [Abstract]        
Document Period End Date     Mar. 27, 2020  
United States income taxes $ 11.8 $ 21.3 $ 23.3 $ 50.9
Foreign income taxes 10.1 6.0 20.3 15.4
Provision for income taxes $ 21.9 $ 27.3 $ 43.6 $ 66.3
Effective tax rate 10.80% 11.40% 9.00% 11.80%