Summary of Significant Accounting Policies (Narrative) (Details) - USD ($)		12 Months Ended
	Aug. 26, 2018	Oct. 01, 2023	Oct. 02, 2022	Oct. 03, 2021	Sep. 28, 2020
Retained Earnings (Accumulated Deficit)		$ (7,255,800,000)	$ (8,449,800,000)
Goodwill impairments		0	0	$ 0
Government subsidies receivables		15,600,000	69,400,000
Accounts Receivable, after Allowance for Credit Loss [Abstract]
Accounts Receivable, Allowance for Credit Loss, Current		23,800,000	27,200,000
Inventory Disclosure [Abstract]
Inventory Valuation Reserves		44,400,000	43,100,000
Asset Retirement Obligation [Abstract]
Capitalized Costs, Asset Retirement Costs		25,600,000	26,100,000
Asset Retirement Obligations, Noncurrent		110,300,000	104,700,000
Marketing and Advertising Expense [Abstract]
Advertising Expense		507,800,000	416,700,000	305,100,000
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Deferred Revenue	$ 7,000,000,000
Prepaid Royalty Economic Life	40 years
Deferred Revenue, Current		1,700,200,000	1,641,900,000
Deferred Revenue, Revenue Recognized		176,500,000	176,500,000	176,600,000
Restructuring Charges		22,000,000	46,000,000	155,400,000
Operating Lease, Liability, Current		1,275,300,000	1,245,700,000
Accrued payroll and benefits		828,300,000	761,700,000
Derivative, Collateral, Obligation to Return Cash		77,100,000	74,300,000
Margin Deposit Assets		20,600,000	75,600,000
Payroll Tax Incentives				210,000,000
Deferred Payroll Tax Payments, Current			116,500,000
Lessee, Lease, Description [Line Items]
Restructuring Charges		22,000,000	46,000,000	155,400,000
Accrued payroll and benefits		828,300,000	761,700,000
Operating Lease, Liability, Current		1,275,300,000	1,245,700,000
Property, Plant and Equipment [Line Items]
Net disposition and impairment charges		91,100,000	66,600,000	153,100,000
Restructuring Charges [Member]
Property, Plant and Equipment [Line Items]
Net disposition and impairment charges			9,600,000	53,100,000
Store Operating Expense [Member]
Property, Plant and Equipment [Line Items]
Asset Impairment Charges		23,200,000	14,300,000	44,400,000
Facility Closing [Member]
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Restructuring Charges			53,100,000
Lessee, Lease, Description [Line Items]
Restructuring Charges			53,100,000
Lease Termination [Member]
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Restructuring Charges			89,500,000
Lessee, Lease, Description [Line Items]
Restructuring Charges			89,500,000
Revenue Recognition Period Stored Value Cards and Loyalty Program Breakage [Member]
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Deferred Revenue, Current		$ 1,500,000,000	1,400,000,000
Leasehold Improvements [Member]
Lessee, Lease, Description [Line Items]
Property, Plant and Equipment, Useful Life		10 years
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life		10 years
Building [Member] | Minimum [Member]
Lessee, Lease, Description [Line Items]
Property, Plant and Equipment, Useful Life		30 years
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life		30 years
Building [Member] | Maximum [Member]
Lessee, Lease, Description [Line Items]
Property, Plant and Equipment, Useful Life		40 years
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life		40 years
Equipment [Member] | Minimum [Member]
Lessee, Lease, Description [Line Items]
Property, Plant and Equipment, Useful Life		2 years
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life		2 years
Equipment [Member] | Maximum [Member]
Lessee, Lease, Description [Line Items]
Property, Plant and Equipment, Useful Life		15 years
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life		15 years
Accounting Standards Update 2016-13
Retained Earnings (Accumulated Deficit)					$ 2,200,000
Company-operated stores [Member] | Revenue Recognition Period Stored Value Cards and Loyalty Program Breakage [Member]
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Contract with Customer, Liability, Revenue Recognized		$ 196,100,000	196,000,000	164,500,000
Licensed stores [Member] | Revenue Recognition Period Stored Value Cards and Loyalty Program Breakage [Member]
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Contract with Customer, Liability, Revenue Recognized		18,900,000	16,700,000	$ 16,600,000
Nestle Global Coffee Alliance [Member]
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Deferred Revenue, Current		$ 177,000,000	$ 177,000,000