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Condensed Consolidated Balance Sheet (Unaudited) (Parenthetical) (USD $) In Millions, unless otherwise specified	Mar. 31, 2012	Sep. 30, 2011
Accumulated depreciation	$ 1,195.5	$ 1,159.1
Common stock, shares issued	181.4	181.4
Treasury stock, shares	38.7	39.5

- 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.

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