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Earnings Per Share (Details)	3 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Earnings Per Share
Denominator for basic earnings per share (in shares)	104,759,000	113,965,000
Potential common shares:
Stock options	100,000	200,000
Other	600,000	400,000
Denominator for diluted earnings per share (in shares)	105,538,000	114,591,000

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Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of other common shares or units not defined elsewhere.

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Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of share based payment arrangements using the treasury stock method.

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The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period.

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