Income Taxes (Tax Effect of Temporary Differences and Carryforwards That Comprise Significant Portions of Deferred Tax Assets and Liabilities) (Details) - USD ($) $ in Millions	Sep. 29, 2019	Oct. 01, 2018	Sep. 30, 2018
Tax Credit Carryforward [Line Items]
Deferred Tax Liabilities, Net, Noncurrent	$ 186.4		$ 270.2
Deferred Tax Assets, Net, Noncurrent	1,765.8	$ 123.7	134.7
Deferred Tax Assets, Net	1,579.4
Deferred Tax Liabilities, Net			135.5
Property, plant and equipment	66.5		67.4
Deferred Tax Assets, Goodwill and Intangible Assets	230.0		0.0
Accrued occupancy costs	121.6		109.0
Accrued compensation and related costs	62.7		64.2
Stored value card liability	1,649.0		144.2
Stock-based compensation	77.5		96.7
Net operating losses	75.6		79.2
Other	130.7		129.5
Total	2,413.6		690.2
Valuation allowance	(75.1)		(129.3)
Total deferred tax asset, net of valuation allowance	2,338.5		560.9
Property, plant and equipment	(400.9)		(348.1)
Intangible assets and goodwill	(209.9)		(274.2)
Other	(148.3)		(74.1)
Total	(759.1)		$ (696.4)
expirationbeginningfiscal2024 [Member]
Tax Credit Carryforward [Line Items]
Tax credit carryforward	3.5
expirationbeginningfiscal2020 [Member] [Domain]
Tax Credit Carryforward [Line Items]
Foreign net operating loss carryforwards	246.2
expirationindefinite [Member]
Tax Credit Carryforward [Line Items]
Foreign net operating loss carryforwards	$ 109.5