Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended
	Jan. 04, 2020	Dec. 29, 2018
Income Tax Disclosure [Abstract]
Effective tax rate (as a percent)	36.30%	17.10%
Statutory Federal income tax rate (as a percent)	21.00%	21.00%
Income tax benefit, due to lapse of statute of limitations		$ 8.1
Benefit related to prior year tax returns		1.7
Additional valuation allowance		0.5
Income tax expense to reflect U.S. Tax reform		2.4
Increase in uncertain tax position		$ 1.1