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Fair Value Measurements (Assets And Liabilities Measured At Fair Value On A Recurring Basis) (Details) (USD $) In Millions, unless otherwise specified | Mar. 29, 2015 | Sep. 28, 2014
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Assets: |  |
Total short-term investments | $ 99.4us-gaap_ShortTermInvestments | $ 135.4us-gaap_ShortTermInvestments
Available-for-sale securities | 325.1us-gaap_AvailableForSaleSecuritiesNoncurrent | 318.4us-gaap_AvailableForSaleSecuritiesNoncurrent
Total Assets | 2,290.7us-gaap_AssetsFairValueDisclosure | 2,208.9us-gaap_AssetsFairValueDisclosure
Liabilities: |  |
Total Liabilities | 23.7us-gaap_DerivativeLiabilities |
Cash and Cash Equivalents [Member] |  |
Assets: |  |
Cash and cash equivalents | 1,750.4us-gaap_CashAndCashEquivalentsFairValueDisclosure / us-gaap_BalanceSheetLocationAxis = us-gaap_CashAndCashEquivalentsMember | 1,708.4us-gaap_CashAndCashEquivalentsFairValueDisclosure / us-gaap_BalanceSheetLocationAxis = us-gaap_CashAndCashEquivalentsMember
Short-term Investments [Member] |  |
Assets: |  |
Available-for-sale securities | 20.2us-gaap_AvailableForSaleSecuritiesCurrent / us-gaap_BalanceSheetLocationAxis = us-gaap_ShortTermInvestmentsMember | 63.2us-gaap_AvailableForSaleSecuritiesCurrent / us-gaap_BalanceSheetLocationAxis = us-gaap_ShortTermInvestmentsMember
Trading securities | 79.2us-gaap_TradingSecurities / us-gaap_BalanceSheetLocationAxis = us-gaap_ShortTermInvestmentsMember | 72.2us-gaap_TradingSecurities / us-gaap_BalanceSheetLocationAxis = us-gaap_ShortTermInvestmentsMember
Total short-term investments | 99.4us-gaap_ShortTermInvestments / us-gaap_BalanceSheetLocationAxis = us-gaap_ShortTermInvestmentsMember | 135.4us-gaap_ShortTermInvestments / us-gaap_BalanceSheetLocationAxis = us-gaap_ShortTermInvestmentsMember
Prepaid Expenses and Other Current Assets [Member] |  |
Assets: |  |
Derivative assets | 44.6us-gaap_DerivativeAssetsCurrent / us-gaap_BalanceSheetLocationAxis = us-gaap_PrepaidExpensesAndOtherCurrentAssetsMember | 28.7us-gaap_DerivativeAssetsCurrent / us-gaap_BalanceSheetLocationAxis = us-gaap_PrepaidExpensesAndOtherCurrentAssetsMember
Long-term Investments [Member] |  |
Assets: |  |
Available-for-sale securities | 325.1us-gaap_AvailableForSaleSecuritiesNoncurrent / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherLongTermInvestmentsMember | 318.4us-gaap_AvailableForSaleSecuritiesNoncurrent / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherLongTermInvestmentsMember
Other Long-Term Assets [Member] |  |
Assets: |  |
Derivative assets | 71.2us-gaap_DerivativeAssetsNoncurrent / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentAssetsMember | 18.0us-gaap_DerivativeAssetsNoncurrent / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentAssetsMember
Accrued Liabilities [Member] |  |
Liabilities: |  |
Derivative liabilities | 12.6us-gaap_DerivativeLiabilitiesCurrent / us-gaap_BalanceSheetLocationAxis = us-gaap_AccruedLiabilitiesMember | 2.4us-gaap_DerivativeLiabilitiesCurrent / us-gaap_BalanceSheetLocationAxis = us-gaap_AccruedLiabilitiesMember
Other Long-Term Liabilities [Member] |  |
Liabilities: |  |
Derivative liabilities | 11.1us-gaap_DerivativeLiabilitiesNoncurrent / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentLiabilitiesMember |
Fair Value, Inputs, Level 1 [Member] |  |
Assets: |  |
Total Assets | 1,932.4us-gaap_AssetsFairValueDisclosure / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member | 1,887.2us-gaap_AssetsFairValueDisclosure / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member
Liabilities: |  |
Total Liabilities | 1.1us-gaap_DerivativeLiabilities / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member |
Fair Value, Inputs, Level 1 [Member] | Cash and Cash Equivalents [Member] |  |
Assets: |  |
Cash and cash equivalents | 1,750.4us-gaap_CashAndCashEquivalentsFairValueDisclosure / us-gaap_BalanceSheetLocationAxis = us-gaap_CashAndCashEquivalentsMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member | 1,708.4us-gaap_CashAndCashEquivalentsFairValueDisclosure / us-gaap_BalanceSheetLocationAxis = us-gaap_CashAndCashEquivalentsMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member
Fair Value, Inputs, Level 1 [Member] | Short-term Investments [Member] |  |
Assets: |  |
Available-for-sale securities | 0us-gaap_AvailableForSaleSecuritiesCurrent / us-gaap_BalanceSheetLocationAxis = us-gaap_ShortTermInvestmentsMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member | 10.9us-gaap_AvailableForSaleSecuritiesCurrent / us-gaap_BalanceSheetLocationAxis = us-gaap_ShortTermInvestmentsMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member
Trading securities | 79.2us-gaap_TradingSecurities / us-gaap_BalanceSheetLocationAxis = us-gaap_ShortTermInvestmentsMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member | 72.2us-gaap_TradingSecurities / us-gaap_BalanceSheetLocationAxis = us-gaap_ShortTermInvestmentsMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member
Total short-term investments | 79.2us-gaap_ShortTermInvestments / us-gaap_BalanceSheetLocationAxis = us-gaap_ShortTermInvestmentsMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member | 83.1us-gaap_ShortTermInvestments / us-gaap_BalanceSheetLocationAxis = us-gaap_ShortTermInvestmentsMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member
Fair Value, Inputs, Level 1 [Member] | Prepaid Expenses and Other Current Assets [Member] |  |
Assets: |  |
Derivative assets | 1.6us-gaap_DerivativeAssetsCurrent / us-gaap_BalanceSheetLocationAxis = us-gaap_PrepaidExpensesAndOtherCurrentAssetsMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member | 0.9us-gaap_DerivativeAssetsCurrent / us-gaap_BalanceSheetLocationAxis = us-gaap_PrepaidExpensesAndOtherCurrentAssetsMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member
Fair Value, Inputs, Level 1 [Member] | Long-term Investments [Member] |  |
Assets: |  |
Available-for-sale securities | 101.2us-gaap_AvailableForSaleSecuritiesNoncurrent / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherLongTermInvestmentsMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member | 94.8us-gaap_AvailableForSaleSecuritiesNoncurrent / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherLongTermInvestmentsMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member
Fair Value, Inputs, Level 1 [Member] | Other Long-Term Assets [Member] |  |
Assets: |  |
Derivative assets | 0us-gaap_DerivativeAssetsNoncurrent / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentAssetsMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member | 0us-gaap_DerivativeAssetsNoncurrent / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentAssetsMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member
Fair Value, Inputs, Level 1 [Member] | Accrued Liabilities [Member] |  |
Liabilities: |  |
Derivative liabilities | 1.1us-gaap_DerivativeLiabilitiesCurrent / us-gaap_BalanceSheetLocationAxis = us-gaap_AccruedLiabilitiesMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member | 0.4us-gaap_DerivativeLiabilitiesCurrent / us-gaap_BalanceSheetLocationAxis = us-gaap_AccruedLiabilitiesMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member
Fair Value, Inputs, Level 1 [Member] | Other Long-Term Liabilities [Member] |  |
Liabilities: |  |
Derivative liabilities | 0us-gaap_DerivativeLiabilitiesNoncurrent / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentLiabilitiesMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member |
Significant Other Observable Inputs (Level 2) [Member] |  |
Assets: |  |
Total Assets | 352.5us-gaap_AssetsFairValueDisclosure / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member | 307.9us-gaap_AssetsFairValueDisclosure / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member
Liabilities: |  |
Total Liabilities | 22.6us-gaap_DerivativeLiabilities / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member |
Significant Other Observable Inputs (Level 2) [Member] | Cash and Cash Equivalents [Member] |  |
Assets: |  |
Cash and cash equivalents | 0us-gaap_CashAndCashEquivalentsFairValueDisclosure / us-gaap_BalanceSheetLocationAxis = us-gaap_CashAndCashEquivalentsMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member | 0us-gaap_CashAndCashEquivalentsFairValueDisclosure / us-gaap_BalanceSheetLocationAxis = us-gaap_CashAndCashEquivalentsMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member
Significant Other Observable Inputs (Level 2) [Member] | Short-term Investments [Member] |  |
Assets: |  |
Available-for-sale securities | 20.2us-gaap_AvailableForSaleSecuritiesCurrent / us-gaap_BalanceSheetLocationAxis = us-gaap_ShortTermInvestmentsMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member | 52.3us-gaap_AvailableForSaleSecuritiesCurrent / us-gaap_BalanceSheetLocationAxis = us-gaap_ShortTermInvestmentsMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member
Trading securities | 0us-gaap_TradingSecurities / us-gaap_BalanceSheetLocationAxis = us-gaap_ShortTermInvestmentsMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member | 0us-gaap_TradingSecurities / us-gaap_BalanceSheetLocationAxis = us-gaap_ShortTermInvestmentsMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member
Total short-term investments | 20.2us-gaap_ShortTermInvestments / us-gaap_BalanceSheetLocationAxis = us-gaap_ShortTermInvestmentsMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member | 52.3us-gaap_ShortTermInvestments / us-gaap_BalanceSheetLocationAxis = us-gaap_ShortTermInvestmentsMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member
Significant Other Observable Inputs (Level 2) [Member] | Prepaid Expenses and Other Current Assets [Member] |  |
Assets: |  |
Derivative assets | 43.0us-gaap_DerivativeAssetsCurrent / us-gaap_BalanceSheetLocationAxis = us-gaap_PrepaidExpensesAndOtherCurrentAssetsMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member | 27.8us-gaap_DerivativeAssetsCurrent / us-gaap_BalanceSheetLocationAxis = us-gaap_PrepaidExpensesAndOtherCurrentAssetsMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member
Significant Other Observable Inputs (Level 2) [Member] | Long-term Investments [Member] |  |
Assets: |  |
Available-for-sale securities | 218.1us-gaap_AvailableForSaleSecuritiesNoncurrent / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherLongTermInvestmentsMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member | 209.8us-gaap_AvailableForSaleSecuritiesNoncurrent / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherLongTermInvestmentsMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member
Significant Other Observable Inputs (Level 2) [Member] | Other Long-Term Assets [Member] |  |
Assets: |  |
Derivative assets | 71.2us-gaap_DerivativeAssetsNoncurrent / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentAssetsMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member | 18.0us-gaap_DerivativeAssetsNoncurrent / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentAssetsMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member
Significant Other Observable Inputs (Level 2) [Member] | Accrued Liabilities [Member] |  |
Liabilities: |  |
Derivative liabilities | 11.5us-gaap_DerivativeLiabilitiesCurrent / us-gaap_BalanceSheetLocationAxis = us-gaap_AccruedLiabilitiesMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member | 2.0us-gaap_DerivativeLiabilitiesCurrent / us-gaap_BalanceSheetLocationAxis = us-gaap_AccruedLiabilitiesMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member
Significant Other Observable Inputs (Level 2) [Member] | Other Long-Term Liabilities [Member] |  |
Liabilities: |  |
Derivative liabilities | 11.1us-gaap_DerivativeLiabilitiesNoncurrent / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentLiabilitiesMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member |
Significant Unobservable Inputs (Level 3) [Member] |  |
Assets: |  |
Total Assets | 5.8us-gaap_AssetsFairValueDisclosure / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member | 13.8us-gaap_AssetsFairValueDisclosure / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member
Liabilities: |  |
Total Liabilities | 0us-gaap_DerivativeLiabilities / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member |
Significant Unobservable Inputs (Level 3) [Member] | Cash and Cash Equivalents [Member] |  |
Assets: |  |
Cash and cash equivalents | 0us-gaap_CashAndCashEquivalentsFairValueDisclosure / us-gaap_BalanceSheetLocationAxis = us-gaap_CashAndCashEquivalentsMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member | 0us-gaap_CashAndCashEquivalentsFairValueDisclosure / us-gaap_BalanceSheetLocationAxis = us-gaap_CashAndCashEquivalentsMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member
Significant Unobservable Inputs (Level 3) [Member] | Short-term Investments [Member] |  |
Assets: |  |
Available-for-sale securities | 0us-gaap_AvailableForSaleSecuritiesCurrent / us-gaap_BalanceSheetLocationAxis = us-gaap_ShortTermInvestmentsMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member | 0us-gaap_AvailableForSaleSecuritiesCurrent / us-gaap_BalanceSheetLocationAxis = us-gaap_ShortTermInvestmentsMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member
Trading securities | 0us-gaap_TradingSecurities / us-gaap_BalanceSheetLocationAxis = us-gaap_ShortTermInvestmentsMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member | 0us-gaap_TradingSecurities / us-gaap_BalanceSheetLocationAxis = us-gaap_ShortTermInvestmentsMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member
Total short-term investments | 0us-gaap_ShortTermInvestments / us-gaap_BalanceSheetLocationAxis = us-gaap_ShortTermInvestmentsMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member | 0us-gaap_ShortTermInvestments / us-gaap_BalanceSheetLocationAxis = us-gaap_ShortTermInvestmentsMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member
Significant Unobservable Inputs (Level 3) [Member] | Prepaid Expenses and Other Current Assets [Member] |  |
Assets: |  |
Derivative assets | 0us-gaap_DerivativeAssetsCurrent / us-gaap_BalanceSheetLocationAxis = us-gaap_PrepaidExpensesAndOtherCurrentAssetsMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member | 0us-gaap_DerivativeAssetsCurrent / us-gaap_BalanceSheetLocationAxis = us-gaap_PrepaidExpensesAndOtherCurrentAssetsMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member
Significant Unobservable Inputs (Level 3) [Member] | Long-term Investments [Member] |  |
Assets: |  |
Available-for-sale securities | 5.8us-gaap_AvailableForSaleSecuritiesNoncurrent / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherLongTermInvestmentsMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member | 13.8us-gaap_AvailableForSaleSecuritiesNoncurrent / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherLongTermInvestmentsMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member
Significant Unobservable Inputs (Level 3) [Member] | Other Long-Term Assets [Member] |  |
Assets: |  |
Derivative assets | 0us-gaap_DerivativeAssetsNoncurrent / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentAssetsMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member | 0us-gaap_DerivativeAssetsNoncurrent / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentAssetsMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member
Significant Unobservable Inputs (Level 3) [Member] | Accrued Liabilities [Member] |  |
Liabilities: |  |
Derivative liabilities | 0us-gaap_DerivativeLiabilitiesCurrent / us-gaap_BalanceSheetLocationAxis = us-gaap_AccruedLiabilitiesMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member | 0us-gaap_DerivativeLiabilitiesCurrent / us-gaap_BalanceSheetLocationAxis = us-gaap_AccruedLiabilitiesMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member
Significant Unobservable Inputs (Level 3) [Member] | Other Long-Term Liabilities [Member] |  |
Liabilities: |  |
Derivative liabilities | 0us-gaap_DerivativeLiabilitiesNoncurrent / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentLiabilitiesMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member |
Agency Obligations [Member] | Short-term Investments [Member] |  |
Assets: |  |
Available-for-sale securities | 2.0us-gaap_AvailableForSaleSecuritiesCurrent / us-gaap_BalanceSheetLocationAxis = us-gaap_ShortTermInvestmentsMember / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_AgencySecuritiesMember |
Agency Obligations [Member] | Long-term Investments [Member] |  |
Assets: |  |
Available-for-sale securities | 12.7us-gaap_AvailableForSaleSecuritiesNoncurrent / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherLongTermInvestmentsMember / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_AgencySecuritiesMember | 8.9us-gaap_AvailableForSaleSecuritiesNoncurrent / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherLongTermInvestmentsMember / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_AgencySecuritiesMember
Agency Obligations [Member] | Fair Value, Inputs, Level 1 [Member] | Short-term Investments [Member] |  |
Assets: |  |
Available-for-sale securities | 0us-gaap_AvailableForSaleSecuritiesCurrent / us-gaap_BalanceSheetLocationAxis = us-gaap_ShortTermInvestmentsMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_AgencySecuritiesMember |
Agency Obligations [Member] | Fair Value, Inputs, Level 1 [Member] | Long-term Investments [Member] |  |
Assets: |  |
Available-for-sale securities | 0us-gaap_AvailableForSaleSecuritiesNoncurrent / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherLongTermInvestmentsMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_AgencySecuritiesMember | 0us-gaap_AvailableForSaleSecuritiesNoncurrent / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherLongTermInvestmentsMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_AgencySecuritiesMember
Agency Obligations [Member] | Significant Other Observable Inputs (Level 2) [Member] | Short-term Investments [Member] |  |
Assets: |  |
Available-for-sale securities | 2.0us-gaap_AvailableForSaleSecuritiesCurrent / us-gaap_BalanceSheetLocationAxis = us-gaap_ShortTermInvestmentsMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_AgencySecuritiesMember |
Agency Obligations [Member] | Significant Other Observable Inputs (Level 2) [Member] | Long-term Investments [Member] |  |
Assets: |  |
Available-for-sale securities | 12.7us-gaap_AvailableForSaleSecuritiesNoncurrent / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherLongTermInvestmentsMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_AgencySecuritiesMember | 8.9us-gaap_AvailableForSaleSecuritiesNoncurrent / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherLongTermInvestmentsMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_AgencySecuritiesMember
Agency Obligations [Member] | Significant Unobservable Inputs (Level 3) [Member] | Short-term Investments [Member] |  |
Assets: |  |
Available-for-sale securities | 0us-gaap_AvailableForSaleSecuritiesCurrent / us-gaap_BalanceSheetLocationAxis = us-gaap_ShortTermInvestmentsMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_AgencySecuritiesMember |
Agency Obligations [Member] | Significant Unobservable Inputs (Level 3) [Member] | Long-term Investments [Member] |  |
Assets: |  |
Available-for-sale securities | 0us-gaap_AvailableForSaleSecuritiesNoncurrent / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherLongTermInvestmentsMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_AgencySecuritiesMember | 0us-gaap_AvailableForSaleSecuritiesNoncurrent / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherLongTermInvestmentsMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_AgencySecuritiesMember
Corporate Debt Securities [Member] | Short-term Investments [Member] |  |
Assets: |  |
Available-for-sale securities | 16.2us-gaap_AvailableForSaleSecuritiesCurrent / us-gaap_BalanceSheetLocationAxis = us-gaap_ShortTermInvestmentsMember / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_CorporateDebtSecuritiesMember | 4.9us-gaap_AvailableForSaleSecuritiesCurrent / us-gaap_BalanceSheetLocationAxis = us-gaap_ShortTermInvestmentsMember / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_CorporateDebtSecuritiesMember
Corporate Debt Securities [Member] | Long-term Investments [Member] |  |
Assets: |  |
Available-for-sale securities | 136.3us-gaap_AvailableForSaleSecuritiesNoncurrent / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherLongTermInvestmentsMember / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_CorporateDebtSecuritiesMember | 130.9us-gaap_AvailableForSaleSecuritiesNoncurrent / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherLongTermInvestmentsMember / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_CorporateDebtSecuritiesMember
Corporate Debt Securities [Member] | Fair Value, Inputs, Level 1 [Member] | Short-term Investments [Member] |  |
Assets: |  |
Available-for-sale securities | 0us-gaap_AvailableForSaleSecuritiesCurrent / us-gaap_BalanceSheetLocationAxis = us-gaap_ShortTermInvestmentsMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_CorporateDebtSecuritiesMember | 0us-gaap_AvailableForSaleSecuritiesCurrent / us-gaap_BalanceSheetLocationAxis = us-gaap_ShortTermInvestmentsMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_CorporateDebtSecuritiesMember
Corporate Debt Securities [Member] | Fair Value, Inputs, Level 1 [Member] | Long-term Investments [Member] |  |
Assets: |  |
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Corporate Debt Securities [Member] | Significant Other Observable Inputs (Level 2) [Member] | Short-term Investments [Member] |  |
Assets: |  |
Available-for-sale securities | 16.2us-gaap_AvailableForSaleSecuritiesCurrent / us-gaap_BalanceSheetLocationAxis = us-gaap_ShortTermInvestmentsMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_CorporateDebtSecuritiesMember | 4.9us-gaap_AvailableForSaleSecuritiesCurrent / us-gaap_BalanceSheetLocationAxis = us-gaap_ShortTermInvestmentsMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_CorporateDebtSecuritiesMember
Corporate Debt Securities [Member] | Significant Other Observable Inputs (Level 2) [Member] | Long-term Investments [Member] |  |
Assets: |  |
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Corporate Debt Securities [Member] | Significant Unobservable Inputs (Level 3) [Member] | Short-term Investments [Member] |  |
Assets: |  |
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Corporate Debt Securities [Member] | Significant Unobservable Inputs (Level 3) [Member] | Long-term Investments [Member] |  |
Assets: |  |
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Auction Rate Securities [Member] | Long-term Investments [Member] |  |
Assets: |  |
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Auction Rate Securities [Member] | Fair Value, Inputs, Level 1 [Member] | Long-term Investments [Member] |  |
Assets: |  |
Available-for-sale securities | 0us-gaap_AvailableForSaleSecuritiesNoncurrent / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherLongTermInvestmentsMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_AuctionRateSecuritiesMember | 0us-gaap_AvailableForSaleSecuritiesNoncurrent / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherLongTermInvestmentsMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_AuctionRateSecuritiesMember
Auction Rate Securities [Member] | Significant Other Observable Inputs (Level 2) [Member] | Long-term Investments [Member] |  |
Assets: |  |
Available-for-sale securities | 0us-gaap_AvailableForSaleSecuritiesNoncurrent / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherLongTermInvestmentsMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_AuctionRateSecuritiesMember | 0us-gaap_AvailableForSaleSecuritiesNoncurrent / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherLongTermInvestmentsMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_AuctionRateSecuritiesMember
Auction Rate Securities [Member] | Significant Unobservable Inputs (Level 3) [Member] | Long-term Investments [Member] |  |
Assets: |  |
Available-for-sale securities | 5.8us-gaap_AvailableForSaleSecuritiesNoncurrent / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherLongTermInvestmentsMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_AuctionRateSecuritiesMember | 13.8us-gaap_AvailableForSaleSecuritiesNoncurrent / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherLongTermInvestmentsMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_AuctionRateSecuritiesMember
Foreign Government Obligations [Member] | Short-term Investments [Member] |  |
Assets: |  |
Available-for-sale securities |  | 33.7us-gaap_AvailableForSaleSecuritiesCurrent / us-gaap_BalanceSheetLocationAxis = us-gaap_ShortTermInvestmentsMember / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_ForeignGovernmentDebtSecuritiesMember
Foreign Government Obligations [Member] | Long-term Investments [Member] |  |
Assets: |  |
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Foreign Government Obligations [Member] | Fair Value, Inputs, Level 1 [Member] | Short-term Investments [Member] |  |
Assets: |  |
Available-for-sale securities |  | 0us-gaap_AvailableForSaleSecuritiesCurrent / us-gaap_BalanceSheetLocationAxis = us-gaap_ShortTermInvestmentsMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_ForeignGovernmentDebtSecuritiesMember
Foreign Government Obligations [Member] | Fair Value, Inputs, Level 1 [Member] | Long-term Investments [Member] |  |
Assets: |  |
Available-for-sale securities | 0us-gaap_AvailableForSaleSecuritiesNoncurrent / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherLongTermInvestmentsMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_ForeignGovernmentDebtSecuritiesMember | 0us-gaap_AvailableForSaleSecuritiesNoncurrent / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherLongTermInvestmentsMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_ForeignGovernmentDebtSecuritiesMember
Foreign Government Obligations [Member] | Significant Other Observable Inputs (Level 2) [Member] | Short-term Investments [Member] |  |
Assets: |  |
Available-for-sale securities |  | 33.7us-gaap_AvailableForSaleSecuritiesCurrent / us-gaap_BalanceSheetLocationAxis = us-gaap_ShortTermInvestmentsMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_ForeignGovernmentDebtSecuritiesMember
Foreign Government Obligations [Member] | Significant Other Observable Inputs (Level 2) [Member] | Long-term Investments [Member] |  |
Assets: |  |
Available-for-sale securities | 16.4us-gaap_AvailableForSaleSecuritiesNoncurrent / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherLongTermInvestmentsMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_ForeignGovernmentDebtSecuritiesMember | 17.4us-gaap_AvailableForSaleSecuritiesNoncurrent / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherLongTermInvestmentsMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_ForeignGovernmentDebtSecuritiesMember
Foreign Government Obligations [Member] | Significant Unobservable Inputs (Level 3) [Member] | Short-term Investments [Member] |  |
Assets: |  |
Available-for-sale securities |  | 0us-gaap_AvailableForSaleSecuritiesCurrent / us-gaap_BalanceSheetLocationAxis = us-gaap_ShortTermInvestmentsMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_ForeignGovernmentDebtSecuritiesMember
Foreign Government Obligations [Member] | Significant Unobservable Inputs (Level 3) [Member] | Long-term Investments [Member] |  |
Assets: |  |
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US Government Treasury Securities [Member] | Short-term Investments [Member] |  |
Assets: |  |
Available-for-sale securities |  | 10.9us-gaap_AvailableForSaleSecuritiesCurrent / us-gaap_BalanceSheetLocationAxis = us-gaap_ShortTermInvestmentsMember / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_USTreasuryAndGovernmentMember
US Government Treasury Securities [Member] | Long-term Investments [Member] |  |
Assets: |  |
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US Government Treasury Securities [Member] | Fair Value, Inputs, Level 1 [Member] | Short-term Investments [Member] |  |
Assets: |  |
Available-for-sale securities |  | 10.9us-gaap_AvailableForSaleSecuritiesCurrent / us-gaap_BalanceSheetLocationAxis = us-gaap_ShortTermInvestmentsMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_USTreasuryAndGovernmentMember
US Government Treasury Securities [Member] | Fair Value, Inputs, Level 1 [Member] | Long-term Investments [Member] |  |
Assets: |  |
Available-for-sale securities | 101.2us-gaap_AvailableForSaleSecuritiesNoncurrent / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherLongTermInvestmentsMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_USTreasuryAndGovernmentMember | 94.8us-gaap_AvailableForSaleSecuritiesNoncurrent / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherLongTermInvestmentsMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_USTreasuryAndGovernmentMember
US Government Treasury Securities [Member] | Significant Other Observable Inputs (Level 2) [Member] | Short-term Investments [Member] |  |
Assets: |  |
Available-for-sale securities |  | 0us-gaap_AvailableForSaleSecuritiesCurrent / us-gaap_BalanceSheetLocationAxis = us-gaap_ShortTermInvestmentsMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_USTreasuryAndGovernmentMember
US Government Treasury Securities [Member] | Significant Other Observable Inputs (Level 2) [Member] | Long-term Investments [Member] |  |
Assets: |  |
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US Government Treasury Securities [Member] | Significant Unobservable Inputs (Level 3) [Member] | Short-term Investments [Member] |  |
Assets: |  |
Available-for-sale securities |  | 0us-gaap_AvailableForSaleSecuritiesCurrent / us-gaap_BalanceSheetLocationAxis = us-gaap_ShortTermInvestmentsMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_USTreasuryAndGovernmentMember
US Government Treasury Securities [Member] | Significant Unobservable Inputs (Level 3) [Member] | Long-term Investments [Member] |  |
Assets: |  |
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State and Local Government Obligations [Member] | Short-term Investments [Member] |  |
Assets: |  |
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State and Local Government Obligations [Member] | Long-term Investments [Member] |  |
Assets: |  |
Available-for-sale securities | 9.0us-gaap_AvailableForSaleSecuritiesNoncurrent / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherLongTermInvestmentsMember / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = sbux_StateandLocalGovernmentObligationsMember | 6.7us-gaap_AvailableForSaleSecuritiesNoncurrent / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherLongTermInvestmentsMember / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = sbux_StateandLocalGovernmentObligationsMember
State and Local Government Obligations [Member] | Fair Value, Inputs, Level 1 [Member] | Short-term Investments [Member] |  |
Assets: |  |
Available-for-sale securities | 0us-gaap_AvailableForSaleSecuritiesCurrent / us-gaap_BalanceSheetLocationAxis = us-gaap_ShortTermInvestmentsMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = sbux_StateandLocalGovernmentObligationsMember | 0us-gaap_AvailableForSaleSecuritiesCurrent / us-gaap_BalanceSheetLocationAxis = us-gaap_ShortTermInvestmentsMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = sbux_StateandLocalGovernmentObligationsMember
State and Local Government Obligations [Member] | Fair Value, Inputs, Level 1 [Member] | Long-term Investments [Member] |  |
Assets: |  |
Available-for-sale securities | 0us-gaap_AvailableForSaleSecuritiesNoncurrent / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherLongTermInvestmentsMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = sbux_StateandLocalGovernmentObligationsMember | 0us-gaap_AvailableForSaleSecuritiesNoncurrent / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherLongTermInvestmentsMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = sbux_StateandLocalGovernmentObligationsMember
State and Local Government Obligations [Member] | Significant Other Observable Inputs (Level 2) [Member] | Short-term Investments [Member] |  |
Assets: |  |
Available-for-sale securities | 2.0us-gaap_AvailableForSaleSecuritiesCurrent / us-gaap_BalanceSheetLocationAxis = us-gaap_ShortTermInvestmentsMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = sbux_StateandLocalGovernmentObligationsMember | 12.7us-gaap_AvailableForSaleSecuritiesCurrent / us-gaap_BalanceSheetLocationAxis = us-gaap_ShortTermInvestmentsMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = sbux_StateandLocalGovernmentObligationsMember
State and Local Government Obligations [Member] | Significant Other Observable Inputs (Level 2) [Member] | Long-term Investments [Member] |  |
Assets: |  |
Available-for-sale securities | 9.0us-gaap_AvailableForSaleSecuritiesNoncurrent / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherLongTermInvestmentsMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = sbux_StateandLocalGovernmentObligationsMember | 6.7us-gaap_AvailableForSaleSecuritiesNoncurrent / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherLongTermInvestmentsMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = sbux_StateandLocalGovernmentObligationsMember
State and Local Government Obligations [Member] | Significant Unobservable Inputs (Level 3) [Member] | Short-term Investments [Member] |  |
Assets: |  |
Available-for-sale securities | 0us-gaap_AvailableForSaleSecuritiesCurrent / us-gaap_BalanceSheetLocationAxis = us-gaap_ShortTermInvestmentsMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = sbux_StateandLocalGovernmentObligationsMember | 0us-gaap_AvailableForSaleSecuritiesCurrent / us-gaap_BalanceSheetLocationAxis = us-gaap_ShortTermInvestmentsMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = sbux_StateandLocalGovernmentObligationsMember
State and Local Government Obligations [Member] | Significant Unobservable Inputs (Level 3) [Member] | Long-term Investments [Member] |  |
Assets: |  |
Available-for-sale securities | 0us-gaap_AvailableForSaleSecuritiesNoncurrent / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherLongTermInvestmentsMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = sbux_StateandLocalGovernmentObligationsMember | 0us-gaap_AvailableForSaleSecuritiesNoncurrent / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherLongTermInvestmentsMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = sbux_StateandLocalGovernmentObligationsMember
Certificates Of Deposit [Member] | Short-term Investments [Member] |  |
Assets: |  |
Available-for-sale securities |  | 1.0us-gaap_AvailableForSaleSecuritiesCurrent / us-gaap_BalanceSheetLocationAxis = us-gaap_ShortTermInvestmentsMember / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_CertificatesOfDepositMember
Certificates Of Deposit [Member] | Fair Value, Inputs, Level 1 [Member] | Short-term Investments [Member] |  |
Assets: |  |
Available-for-sale securities |  | 0us-gaap_AvailableForSaleSecuritiesCurrent / us-gaap_BalanceSheetLocationAxis = us-gaap_ShortTermInvestmentsMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_CertificatesOfDepositMember
Certificates Of Deposit [Member] | Significant Other Observable Inputs (Level 2) [Member] | Short-term Investments [Member] |  |
Assets: |  |
Available-for-sale securities |  | 1.0us-gaap_AvailableForSaleSecuritiesCurrent / us-gaap_BalanceSheetLocationAxis = us-gaap_ShortTermInvestmentsMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_CertificatesOfDepositMember
Certificates Of Deposit [Member] | Significant Unobservable Inputs (Level 3) [Member] | Short-term Investments [Member] |  |
Assets: |  |
Available-for-sale securities |  | 0us-gaap_AvailableForSaleSecuritiesCurrent / us-gaap_BalanceSheetLocationAxis = us-gaap_ShortTermInvestmentsMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_CertificatesOfDepositMember
Mortgage and Other Asset-backed Securities [Member] | Long-term Investments [Member] |  |
Assets: |  |
Available-for-sale securities | 43.7us-gaap_AvailableForSaleSecuritiesNoncurrent / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherLongTermInvestmentsMember / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_AssetBackedSecuritiesMember | 45.9us-gaap_AvailableForSaleSecuritiesNoncurrent / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherLongTermInvestmentsMember / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_AssetBackedSecuritiesMember
Mortgage and Other Asset-backed Securities [Member] | Fair Value, Inputs, Level 1 [Member] | Long-term Investments [Member] |  |
Assets: |  |
Available-for-sale securities | 0us-gaap_AvailableForSaleSecuritiesNoncurrent / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherLongTermInvestmentsMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_AssetBackedSecuritiesMember | 0us-gaap_AvailableForSaleSecuritiesNoncurrent / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherLongTermInvestmentsMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_AssetBackedSecuritiesMember
Mortgage and Other Asset-backed Securities [Member] | Significant Other Observable Inputs (Level 2) [Member] | Long-term Investments [Member] |  |
Assets: |  |
Available-for-sale securities | 43.7us-gaap_AvailableForSaleSecuritiesNoncurrent / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherLongTermInvestmentsMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_AssetBackedSecuritiesMember | 45.9us-gaap_AvailableForSaleSecuritiesNoncurrent / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherLongTermInvestmentsMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_AssetBackedSecuritiesMember
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