Goodwill And Intangible Assets (Changes In Carrying Amount Of Goodwill) (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Mar. 31, 2012
Goodwill And Intangible Assets [Line Items]
Goodwill, beginning balance	$ 735,021
Current Year Acquisitions	13,958
Goodwill, Allocation Adjustment	(4,012)
Foreign Currency Translation	3,433
Goodwill, ending balance	748,400
Aircraft Controls [Member]
Goodwill And Intangible Assets [Line Items]
Goodwill, beginning balance	194,052
Current Year Acquisitions	0
Goodwill, Allocation Adjustment	(3,865)
Foreign Currency Translation	1,718
Goodwill, ending balance	191,905
Space And Defense Controls [Member]
Goodwill And Intangible Assets [Line Items]
Goodwill, beginning balance	121,416
Current Year Acquisitions	5,224
Goodwill, Allocation Adjustment	0
Foreign Currency Translation	95
Goodwill, ending balance	126,735
Industrial Systems [Member]
Goodwill And Intangible Assets [Line Items]
Goodwill, beginning balance	120,834
Current Year Acquisitions	0
Goodwill, Allocation Adjustment	0
Foreign Currency Translation	252
Goodwill, ending balance	121,086
Components [Member]
Goodwill And Intangible Assets [Line Items]
Goodwill, beginning balance	172,531
Current Year Acquisitions	8,734
Goodwill, Allocation Adjustment	(147)
Foreign Currency Translation	1,407
Goodwill, ending balance	182,525
Medical Devices [Member]
Goodwill And Intangible Assets [Line Items]
Goodwill, beginning balance	126,188
Current Year Acquisitions	0
Goodwill, Allocation Adjustment	0
Foreign Currency Translation	(39)
Goodwill, ending balance	$ 126,149