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Summary of Significant Accounting Policies (Narrative) (Details) - USD ($) |  | 12 Months Ended |
--- | --- | --- | ---
Aug. 26, 2018 | Oct. 02, 2022 | Oct. 03, 2021 | Sep. 27, 2020 | Sep. 28, 2020
Retained Earnings (Accumulated Deficit) |  | $ (8,449,800,000) | $ (6,315,700,000) |  |
Goodwill impairments |  | 0 | 0 | $ 0 |
Government subsidies receivables |  | 69,400,000 | 172,400,000 |  |
Accounts Receivable, after Allowance for Credit Loss [Abstract] |  |  |  |  |
Accounts Receivable, Allowance for Credit Loss, Current |  | 27,200,000 | 25,600,000 |  |
Inventory Disclosure [Abstract] |  |  |  |  |
Inventory Valuation Reserves |  | 43,100,000 | 36,600,000 |  |
Asset Retirement Obligation [Abstract] |  |  |  |  |
Capitalized Costs, Asset Retirement Costs |  | 26,100,000 | 30,900,000 |  |
Asset Retirement Obligations, Noncurrent |  | 104,700,000 | 116,500,000 |  |
Marketing and Advertising Expense [Abstract] |  |  |  |  |
Advertising Expense |  | 416,700,000 | 305,100,000 | 258,800,000 |
Revenue Recognition, Multiple-deliverable Arrangements [Line Items] |  |  |  |  |
Deferred Revenue | $ 7,000,000,000 |  |  |  |
Prepaid Royalty Economic Life | 40 years |  |  |  |
Deferred Revenue, Current |  | 1,641,900,000 | 1,596,100,000 |  |
Deferred Revenue, Revenue Recognized |  | 176,500,000 | 176,600,000 | 176,800,000 |
Restructuring Charges |  | 46,000,000 | 155,400,000 | 254,700,000 |
Operating Lease, Liability, Current |  | 1,245,700,000 | 1,251,300,000 |  |
Accrued payroll and benefits |  | 761,700,000 | 772,300,000 |  |
Derivative, Collateral, Obligation to Return Cash |  | 74,300,000 | 44,700,000 |  |
Margin Deposit Assets |  | 75,600,000 | 72,500,000 |  |
Payroll Tax Incentives |  |  | 210,000,000 | 349,600,000 |
Deferred Payroll Tax Payments, Current |  | 116,500,000 | 116,400,000 |  |
Deferred Payroll Tax Payments, Noncurrent |  |  | 116,400,000 |  |
Lessee, Lease, Description [Line Items] |  |  |  |  |
Restructuring Charges |  | 46,000,000 | 155,400,000 | 254,700,000 |
Accrued payroll and benefits |  | 761,700,000 | 772,300,000 |  |
Operating Lease, Liability, Current |  | 1,245,700,000 | 1,251,300,000 |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |
Net disposition and impairment charges |  | 66,600,000 | 153,100,000 | 294,900,000 |
Trade Names, trademarks and patents [Member] |  |  |  |  |
Revenue Recognition, Multiple-deliverable Arrangements [Line Items] |  |  |  |  |
Restructuring Costs and Asset Impairment Charges |  |  |  | 22,100,000 |
Lessee, Lease, Description [Line Items] |  |  |  |  |
Restructuring Costs and Asset Impairment Charges |  |  |  | 22,100,000 |
Restructuring Charges [Member] |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |
Net disposition and impairment charges |  | 9,600,000 | 53,100,000 | 151,000,000 |
Store Operating Expense [Member] |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |
Asset Impairment Charges |  | 14,300,000 | 44,400,000 | 59,600,000 |
Facility Closing [Member] |  |  |  |  |
Revenue Recognition, Multiple-deliverable Arrangements [Line Items] |  |  |  |  |
Restructuring Charges |  |  | 53,100,000 | 151,000,000 |
Lessee, Lease, Description [Line Items] |  |  |  |  |
Restructuring Charges |  |  | 53,100,000 | 151,000,000 |
Lease Termination [Member] |  |  |  |  |
Revenue Recognition, Multiple-deliverable Arrangements [Line Items] |  |  |  |  |
Restructuring Charges |  |  | 89,500,000 | 87,700,000 |
Lessee, Lease, Description [Line Items] |  |  |  |  |
Restructuring Charges |  |  | 89,500,000 | 87,700,000 |
Revenue Recognition Period Stored Value Cards and Loyalty Program Breakage [Member] |  |  |  |  |
Revenue Recognition, Multiple-deliverable Arrangements [Line Items] |  |  |  |  |
Deferred Revenue, Current |  | $ 1,400,000,000 | 1,300,000,000 |  |
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
International [Member] |  |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |  |
Rent Concession |  |  |  | 27,600,000 |
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 |  | $ 196,000,000 | 164,500,000 | 130,300,000 |
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 |  | 16,700,000 | 16,600,000 | $ 14,300,000 |
Nestle Global Coffee Alliance [Member] |  |  |  |  |
Revenue Recognition, Multiple-deliverable Arrangements [Line Items] |  |  |  |  |
Deferred Revenue, Current |  | $ 177,000,000 | $ 177,000,000 |  |

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