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v3.19.3.a.u2

Inventories (Narrative) (Details) $ in Millions | 3 Months Ended
--- | ---
Dec. 29, 2019 USD ($)
Fixed-price Contract [Member] |
Inventory [Line Items] |
Amount of coffee committed to be purchased | $ 992.0
Price-to-be-fixed Contract [Member] |
Inventory [Line Items] |
Amount of coffee committed to be purchased | $ 456.0

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- Definition 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. + References No definition available. + Details
Name: | us-gaap_InventoryLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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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_DerivativeInstrumentRiskAxis=us-gaap_FixedPriceContractMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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