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Inventories (Narrative) (Details) (USD $) In Millions, unless otherwise specified | 3 Months Ended |
--- | --- | ---
Mar. 29, 2015 | Sep. 28, 2014
Coffee Contracts [Member] |  |
Notional amounts of outstanding derivative contracts | $ 36invest_DerivativeNotionalAmount / us-gaap_DerivativeInstrumentRiskAxis = sbux_CoffeeContractsMember | $ 45invest_DerivativeNotionalAmount / us-gaap_DerivativeInstrumentRiskAxis = sbux_CoffeeContractsMember
Fixed Price Contract [Member] |  |
Amount of coffee committed to be purchased | 787us-gaap_LongTermPurchaseCommitmentAmount / us-gaap_DerivativeInstrumentRiskAxis = sbux_FixedPriceContractMember |
Price-to-be-fixed Contract [Member] |  |
Amount of coffee committed to be purchased | 257us-gaap_LongTermPurchaseCommitmentAmount / us-gaap_DerivativeInstrumentRiskAxis = sbux_PriceToBeFixedContractMember |
Future [Member] | Price-to-be-fixed Contract [Member] |  |
Notional amounts of outstanding derivative contracts | 19invest_DerivativeNotionalAmount / us-gaap_DerivativeByNatureAxis = us-gaap_FutureMember / us-gaap_DerivativeInstrumentRiskAxis = sbux_PriceToBeFixedContractMember |
Collar Instruments [Member] | Price-to-be-fixed Contract [Member] |  |
Notional amounts of outstanding derivative contracts | $ 17invest_DerivativeNotionalAmount / us-gaap_DerivativeByNatureAxis = sbux_CollarInstrumentsMember / us-gaap_DerivativeInstrumentRiskAxis = sbux_PriceToBeFixedContractMember |

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- Definition Aggregate notional amount specified by the derivative(s). Expressed as an absolute value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 12 -Section 13 -Sentence Column B + Details
Name: | invest_DerivativeNotionalAmount
Namespace Prefix: | invest_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | instant

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- Definition The minimum amount the entity agreed to spend under the long-term purchase commitment. + References No definition available. + Details
Name: | us-gaap_LongTermPurchaseCommitmentAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Details
Name: | us-gaap_DerivativeByNatureAxis=sbux_CollarInstrumentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_DerivativeByNatureAxis=us-gaap_FutureMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=sbux_CoffeeContractsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=sbux_FixedPriceContractMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=sbux_PriceToBeFixedContractMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |