Consolidated Statements of Comprehensive Income (USD $) In Thousands	12 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2009
Consolidated Statements of Comprehensive Income [Abstract]
Net Income	$ 1,270,994	$ 1,317,610	$ 1,231,603
Other Comprehensive (Loss) Income, Net of Tax
Foreign currency translation adjustments	(117,083)	330	29,358
Defined benefit pension and postretirement plans	(62,228)	(130,461)	(242,478)
Unrealized gain on investments, net of amounts recognized	420		41
Unrealized (loss) gain on cash flow hedges, net of amounts realized	(33,200)	44,884	(82,073)
Other Comprehensive Loss, Net of Tax	(212,091)	(85,247)	(295,152)
Comprehensive Income	$ 1,058,903	$ 1,232,363	$ 936,451