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Income Taxes (Effective Income Tax Rate Reconciliation) (Details)	12 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2011
Income Tax Disclosure [Abstract]
Statutory income tax rate	34.00%	35.00%	35.00%
State taxes, net of federal benefits	(0.40%)	0.70%	0.50%
Utilization of tax credits	(7.30%)	(2.20%)	(1.40%)
Manufacturing deduction	(0.80%)	0.20%	(3.10%)
Discrete tax benefits	(9.20%)	(14.10%)	(4.40%)
Foreign operations	2.00%	3.70%	1.10%
Adjustment of tax contingency reserves	9.70%	4.90%	2.60%
Other, net	1.50%	1.90%	3.00%
Effective income tax rate	29.50%	30.10%	33.30%

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Effective Income Tax Rate Reconciliation, Discrete Tax Benefits

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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 difference between statutory income tax rates in foreign jurisdictions and the domestic federal statutory income tax rate recorded during the period and the portion of the difference between the effective income tax rate and domestic federal statutory income tax rate attributable to the repatriation of foreign earnings under enacted tax laws.

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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 attributable to deduction for qualified production activity.

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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 tax credits. Including, but not limited to, research credit, foreign tax credit, investment tax credit, and other tax credits.

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