Shareholders' Equity (Narrative) (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	12 Months Ended
Sep. 30, 2012	Oct. 02, 2011	Nov. 14, 2012
Equity [Abstract]
Authorized shares of common stock	1,200.0	1,200.0
Par value of common stock	$ 0.001	$ 0.001
Authorized shares of preferred stock	7.5
Outstanding shares of preferred stock	0
Increase in share of net assets of Starbucks Japan	$ 39.4
Shares available for repurchase	12.1
Additional shares authorized for repurchase			25
Translation adjustment tax provision	$ 6.6	$ 3.3

Face amount or stated value of common stock per share; generally not indicative of the fair market value per share.

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The maximum number of common shares permitted to be issued by an entity's charter and bylaws.

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Additional paid-in capital or capital from other sources not otherwise defined. Use this element if the registrant wishes to distinguish between Additional paid-in capital from Other Additional Capital. The following adjustments are some examples of Other Additional Capital: recording the issuance of debt issued with a beneficial conversion feature, the issuance of convertible debt at a substantial premium, certain tax consequences of equity instruments awarded to employees, and accounting for certain expenses and liabilities paid for by the principal shareholder.

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The maximum number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) permitted to be issued by an entity's charter and bylaws.

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Aggregate share number for all nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer) held by stockholders. Does not include preferred shares that have been repurchased.

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The number of shares authorized to be repurchased by an entity's Board of Directors under a stock repurchase plan.

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The remaining number of shares authorized to be repurchased by an entity's Board of Directors under a stock repurchase plan.

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Amount of income tax benefit or expense because of the current period translation adjustment resulting from translating foreign currency financial statements into the reporting currency.

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