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Employee Stock Plans (Narrative) (Details) (USD $) In Millions, except Per Share data, unless otherwise specified | 0 Months Ended |  |
--- | --- | --- | ---
Apr. 09, 2015 | Mar. 29, 2015 | Sep. 28, 2014
Class of Stock [Line Items] |  |  |
Common stock, par value |  | $ 0.001us-gaap_CommonStockParOrStatedValuePerShare | $ 0.001us-gaap_CommonStockParOrStatedValuePerShare
Stock Options and Restricted Stock Units [Member] |  |  |
Statement [Line Items] |  |  |
Common stock available for issuance pursuant to future equity-based compensation awards and ESPP |  | 95.1us-gaap_CommonStockCapitalSharesReservedForFutureIssuance / us-gaap_AwardTypeAxis = sbux_StockOptionsAndRestrictedStockUnitsMember |
Employee Stock Purchase Plan [Member] |  |  |
Statement [Line Items] |  |  |
Common stock available for issuance pursuant to future equity-based compensation awards and ESPP |  | 14.6us-gaap_CommonStockCapitalSharesReservedForFutureIssuance / us-gaap_AwardTypeAxis = us-gaap_EmployeeStockMember |
Subsequent Event [Member] |  |  |
Class of Stock [Line Items] |  |  |
Stock split conversion ratio | 2us-gaap_StockholdersEquityNoteStockSplitConversionRatio1 / us-gaap_SubsequentEventTypeAxis = us-gaap_SubsequentEventMember |  |
Common stock, par value | $ 0.001us-gaap_CommonStockParOrStatedValuePerShare / us-gaap_SubsequentEventTypeAxis = us-gaap_SubsequentEventMember |  |

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- Definition Aggregate number of common shares reserved for future issuance. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.29) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Face amount or stated value per share of common stock. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.29) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 30 -Article 5 + Details
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- Definition Ratio applied to the conversion of stock split, for example but not limited to, one share converted to two or two shares converted to one. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Stock Split -URI http://asc.fasb.org/extlink&oid=6525746 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SAB TOPIC 4.C) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187143-122770 + Details
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