Quarterly report pursuant to Section 13 or 15(d)

Income Taxes (Details)

v3.10.0.1
Income Taxes (Details) - USD ($)
$ in Millions
3 Months Ended 12 Months Ended
Dec. 29, 2018
Sep. 29, 2018
Dec. 30, 2017
Sep. 28, 2019
Sep. 29, 2018
Income Tax Contingency [Line Items]          
Recognized provisional amount   $ 0.1 $ 10.6   $ 10.7
Effective income tax rate (percent) 28.90%   46.40%   1.70%
Minimum | Forecast          
Income Tax Contingency [Line Items]          
Effective income tax rate (percent)       14.00%  
Maximum | Forecast          
Income Tax Contingency [Line Items]          
Effective income tax rate (percent)       16.00%