Property, Plant and Equipment (Details) (USD $) In Millions	12 Months Ended
Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2009
Property, plant and equipment
Buildings and improvements	$ 2,488	$ 2,161
Machinery and equipment	7,205	6,342
Construction in progress	1,419	752
Land	360	366
Total property, plant and equipment	11,472	9,621
Less accumulated depreciation	(5,856)	(5,525)
Property, plant and equipment - net	5,616	4,096	3,986
Property, Plant and Equipment (Textuals)
Interest costs capitalized	34	21	16
Accumulated depreciation related to capital leases	$ 44	$ 48

Property plant and equipment.

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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.

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Gross amount, as of the balance sheet date, of long-lived, depreciable assets that include building structures held for productive use including any addition, improvement, or renovation to the structure, such as interior masonry, interior flooring, electrical, and plumbing.

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The total charge for the use of long-lived depreciable assets subject to a lease meeting the criteria for capitalization.

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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.

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The amount of interest that was capitalized during the period.

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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, as of the balance sheet date, of long-lived, depreciable assets used in the production process to produce goods and services.

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Gross amount, at the balance sheet date, of long-lived physical assets used in the normal conduct of business and not intended for resale. This can include land, buildings, machinery and equipment, and other types of furniture and equipment including, but not limited to, office equipment, furniture and fixtures, and computer equipment and software.

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Tangible assets that are held by an entity for use in the production or supply of goods and services, for rental to others, or for administrative purposes and that are expected to provide economic benefit for more than one year; net of accumulated depreciation. Examples include land, buildings, machinery and equipment, and other types of furniture and equipment including, but not limited to, office equipment, furniture and fixtures, and computer equipment and software.

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