Supplemental Balance Sheet Information (Property, Plant And Equipment, Net) (Details) (USD $) In Millions, unless otherwise specified	Mar. 31, 2013	Sep. 30, 2012
Balance Sheet Related Disclosures [Abstract]
Land	$ 43.9	$ 46.2
Buildings	246.2	225.2
Leasehold improvements	4,136.7	3,957.6
Store equipment	1,261.3	1,251.0
Roasting equipment	349.0	322.8
Furniture, fixtures and other	878.5	836.2
Work in progress	362.9	264.1
Property, plant and equipment, gross	7,278.5	6,903.1
Less accumulated depreciation	(4,433.2)	(4,244.2)
Property, plant and equipment, net	$ 2,845.3	$ 2,658.9

Carrying amount as of the balance sheet date of roasting equipment

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Carrying amount as of the balance sheet date of long-lived, depreciable assets used in company-operated stores.

+ References

No definition available.

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- Definition

The cumulative amount of depreciation, depletion and amortization (related to property, plant and equipment, but not including land) that has been recognized in the income statement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 14

-Article 5

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-Name Accounting Principles Board Opinion (APB)

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-Publisher FASB

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- Definition

Amount before accumulated depreciation of building structures held for productive use including addition, improvement, or renovation to the structure, including, but not limited to, interior masonry, interior flooring, electrical, and plumbing.

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- Definition

Gross amount, at the balance sheet date, of long-lived assets under construction that include construction costs to date on capital projects that have not been completed and assets being constructed that are not ready to be placed into service.

+ References

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Gross amount, at the balance sheet date, of long-lived, depreciable assets commonly used in offices and stores. Examples include desks, chairs, and store fixtures.

+ References

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Carrying amount as of the balance sheet date of real estate held for productive use. This excludes land held for sale.

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Gross amount, at the balance sheet date, of long-lived, depreciable assets that are an addition or improvement to assets held under lease arrangement.

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Gross amount of long-lived physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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Amount, net of accumulated depreciation, depletion and amortization, of long-lived physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

+ References

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-Name Regulation S-X (SX)

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