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Earnings Per Share and Stock Issuances-Antidilutive Securities not Considered in Earnings Per Share Calculation (Details) In Millions, unless otherwise specified	3 Months Ended
	Feb. 28, 2015	Feb. 28, 2014
Earnings Per Share, Basic and Diluted [Abstract]
Anti-dilutive securities	0.4	0.9

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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