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Summary Of Significant Accounting Policies Summary Of Significant Accounting Policies (Excluded Antidilutive Securities) (Details) (Stock Options [Member]) In Millions, unless otherwise specified	12 Months Ended
	Sep. 30, 2010
Stock Options [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive securities excluded from computation of EPS (in shares)	0.2

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

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