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Condensed Consolidated Balance Sheet (Unaudited) (Parenthetical) (USD $)
In Millions
Jun. 30, 2011
Sep. 30, 2010
ASSETS    
Accumulated depreciation $ 1,223.3 $ 1,185.5
Shareowners' equity:    
Common stock, shares issued 181.4 181.4
Treasury stock, shares 38.2 39.7