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Condensed Consolidated Balance Sheet (Unaudited) (Parenthetical) (USD $) In Millions, unless otherwise specified	Dec. 31, 2012	Sep. 30, 2012
Accumulated depreciation	$ 1,241.3	$ 1,211.5
Common stock, shares issued	181.4	181.4
Treasury stock, shares	41.6	41.6

- 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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