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Income Taxes Reconciliation of Effective Income Tax Rate (Details)	12 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2009
Statutory income tax rate	35.00%	35.00%	35.00%
IRS tax settlement	0.00%	(32.00%)	0.00%
State income tax	2.00%	2.00%	2.00%
Other differences	(1.00%)	(1.00%)	(1.00%)
Effective income tax rate	36.00%	4.00%	36.00%

X

- Definition

A ratio calculated by dividing the reported amount of income tax expense attributable to continuing operations for the period by GAAP-basis pretax income from continuing operations.

+ References

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The domestic federal statutory tax rate applicable under enacted tax laws to the Company's pretax income from continuing operations for the period. The "statutory" tax rate is the regular tax rate if there are alternative tax systems.

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The portion of the difference between the effective income tax rate and domestic federal statutory income tax rate attributable to all other items not otherwise listed in the existing taxonomy.

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The portion of the difference between the effective income tax rate and domestic federal statutory income tax rate that can be explained by the state and local income tax expense or benefit, net of the federal tax benefit (expense) thereon, recorded during the period.

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The sum of the differences between the effective income tax rate and domestic federal statutory income tax rate attributable to all income tax settlements during the period.

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