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Income Taxes (Detail 3)	12 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2012
Reconciliation of the U.S. federal statutory rate to the effective rate for continuing operations
U.S. statutory rate (as a percent)	35.00%	35.00%	35.00%
Permanent items (as a percent)	0.50%	0.60%
State taxes (as a percent)	2.70%	3.90%	3.90%
Net foreign rate differential (as a percent)	(2.50%)	(0.70%)	(0.80%)
Changes in valuation allowance (as a percent)	3.60%	1.30%	1.50%
Provision for income taxes (as a percent)	39.30%	40.10%	39.60%

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- Definition

Represents the portion of the difference between the effective income tax rate and domestic federal statutory income tax rate attributable to changes in the valuation allowance for deferred tax assets and all other items not otherwise listed in the existing taxonomy.

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Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations applicable to statutory income tax expense (benefit) outside of the country of domicile.

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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to nondeductible expenses.

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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations applicable to state and local income tax expense (benefit), net of federal tax expense (benefit).

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