For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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Description of the types of products and services from which the reportable segment derives its revenue.

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Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

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Disclosure of the extent of enterprise reliance on its major customers. For example, includes revenues from transactions with a single external customer amounting to 10 percent or more of the entity's revenues, the total amount of revenues from each such customer, and the identity of the segment or segments reporting the revenues. A group of entities that the entity knows to be under common control generally will be considered a single customer for inclusion in this item. The federal government, a state government, a local government (for example, a county or municipality), or a foreign government each will generally be considered as a single customer for inclusion in this item.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Segment Reporting (Narrative) (Details) - Reportable_segment	3 Months Ended		6 Months Ended
	Mar. 29, 2026	Mar. 30, 2025	Mar. 29, 2026	Mar. 30, 2025
Segment Reporting Information [Line Items]
Number of Reportable Segments			3
Segment Reporting, CODM, Profit (Loss) Measure, How Used, Description			Our CODM evaluates the performance of our operating segments based primarily on net revenues and operating income, which represents earnings before other income and expenses and income taxes. Financial information and forecasts are reviewed by our CODM at the segment level, and are used to evaluate performance, monitor actual results versus forecasts, and allocate resources for the consolidated entity. Our CODM does not use total assets by segment as a basis for decision making.
Segment Reporting, Disclosure of Major Customers			No customer accounts for 10% or more of our revenues
Concentration Risk, Percentage \| Japan, Canada and the UK Member [Domain] \| Japan, Canada and the UK Member [Domain]
Segment Reporting Information [Line Items]
Concentration Risk, Percentage	72.00%	74.00%	72.00%	74.00%
Operating Segments \| Channel Development
Segment Reporting Information [Line Items]
Segment Reporting Information, Description of Products and Services			Channel Development revenues include packaged coffee, tea, foodservice products, and ready-to-drink beverage sales to customers outside of our company-operated and licensed stores. Most of our Channel Development revenues are from product sales to, and royalty revenues from, Nestlé through the Global Coffee Alliance.
Operating Segments \| North America and International Segments
Segment Reporting Information [Line Items]
Segment Reporting Information, Description of Products and Services			North America and International operations sell coffee and other beverages, complementary food, packaged coffees, single-serve coffee products, and a focused selection of merchandise through company-operated stores and licensed stores.