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Segment Information (Segment Sales by Customer) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 29, 2019	Jun. 30, 2018	Jun. 29, 2019	Jun. 30, 2018
Segment Reporting Information
Net sales	$ 740,969	$ 692,018	$ 2,139,456	$ 2,008,602
Commercial Customer
Segment Reporting Information
Net sales	430,703	419,227	1,253,261	1,223,452
U.S. Government Customer
Segment Reporting Information
Net sales	262,083	235,886	749,282	658,529
Other Customer
Segment Reporting Information
Net sales	48,183	36,905	136,913	126,621
Aircraft Controls
Segment Reporting Information
Net sales	336,735	299,606	961,407	889,579
Aircraft Controls | Commercial Customer
Segment Reporting Information
Net sales	174,450	155,643	497,305	465,757
Aircraft Controls | U.S. Government Customer
Segment Reporting Information
Net sales	125,387	118,474	365,347	331,357
Aircraft Controls | Other Customer
Segment Reporting Information
Net sales	36,898	25,489	98,755	92,465
Space And Defense Controls
Segment Reporting Information
Net sales	173,045	149,815	493,938	426,735
Space And Defense Controls | Commercial Customer
Segment Reporting Information
Net sales	35,457	28,615	97,698	85,836
Space And Defense Controls | U.S. Government Customer
Segment Reporting Information
Net sales	129,266	111,155	365,552	310,340
Space And Defense Controls | Other Customer
Segment Reporting Information
Net sales	8,322	10,045	30,688	30,559
Industrial Systems
Segment Reporting Information
Net sales	231,189	242,597	684,111	692,288
Industrial Systems | Commercial Customer
Segment Reporting Information
Net sales	220,796	234,969	658,258	671,859
Industrial Systems | U.S. Government Customer
Segment Reporting Information
Net sales	7,430	6,257	18,383	16,832
Industrial Systems | Other Customer
Segment Reporting Information
Net sales	$ 2,963	$ 1,371	$ 7,470	$ 3,597

X

- Definition

Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
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