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Earnings per Share (Policies)	6 Months Ended
Earnings per Share (Policies)	Mar. 31, 2017
Earnings Per Share [Abstract]
Earnings Per Share, Potentially Dilutive Securities	The dilutive effect of share-based awards is reflected in diluted net income per share by application of the treasury stock method, which includes consideration of unamortized share-based compensation expense required under the Compensation – Stock Compensation Topic of the ASC.