Shareholders' Equity (Details Textuals) (USD $) In Thousands, except Per Share data	12 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2009
Shareholders Equity (Textuals) [Abstract]
Accumulated Other Comprehensive Income Loss Foreign Currency Translation Adjustment Goodwill, Net of Tax	$ (12,525)	$ 2,044
Unrealized (losses) gains on cash flow hedges in other comprehensive (loss) income	0	(19,512)	65,012
Income tax provision (benefit) for the unrealized (loss) gain on investments	(40)	0	25
Income tax (benefit) provision for cash flow hedges	20,348	27,509	(50,302)
Income tax benefit for defined benefit pension, postretirement plans and postemployment plans	47,575	67,829	146,554
Unrealized losses on cash flow hedges	(42,909)	(9,709)	(54,593)
Tax provision (benefit) associated with reclassification adjustments	$ 0	$ (11,959)	$ 39,846
Retained Earnings [Member]
Common stock dividend per share	$ 1.64	$ 1.48	$ 1.32