Income Taxes (Schedule Of Effective Income Tax Rate Reconciliation) (Details)	12 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2012
Income Taxes [Abstract]
U.S. Federal statutory rate	35.00%	35.00%	35.00%
State and local taxes net of Federal tax benefit	2.40%	(4.90%)	1.30%
Effect on foreign affiliates	1.10%	(20.70%)	(5.40%)
Earnings of unconsolidated affiliates	1.90%	(26.40%)	(4.20%)
R&D credit	0.00%	(9.50%)	(0.50%)
Domestic production activity deduction	0.70%	(8.30%)	(0.50%)
Partnership income	(1.30%)	14.90%	1.60%
Provision to return adjustments	(0.40%)	(16.40%)	(0.20%)
Meals and entertainment	(0.30%)	2.70%	0.30%
Change in deferred rate	0.10%	2.70%	0.70%
Uncertain tax positions	(0.30%)	13.60%	0.80%
Other	0.10%	(0.80%)	0.90%
Effective income tax rate	39.00%	(18.10%)	29.80%