Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended			12 Months Ended
	Dec. 29, 2018	Dec. 30, 2017	Dec. 31, 2016	Sep. 29, 2018
Income Tax Disclosure [Abstract]
Other Tax Expense (Benefit)	$ 20.0
Company's effective tax rate	5.50%	(324.50%)
Blended statutory income tax rate	21.00%	24.50%	35.00%
Final Net Tax Benefit amount for Tax Cuts and Job Act	$ 341.2	$ 329.2		$ 346.2
Provisional tax benefit of tax reform that relates to deferred taxes				$ 346.4
Benefit Reduction for Tax Cuts and Jobs Act	5.0
Increase to income tax expense adoption of ASU 2016-16	29.1
Decrease in deferred tax liabilities due to ASC 2016-16	49.1
Increase to Net Income resulted from adoption of ASU 2016-16	20.0
Increase to Earnings per Share resulted from adoption of ASC 2016-16	0.0
Increase in deferred tax assets resulting from adoption of ASCU 2016-16	2.9
Decease in accumulated deficit resulting from adoption of ASCU 2016-16	2.5
Decease to prepaid taxes resulting from adoption of ASCU 2016-16	$ 0.4