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Segments (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Oct. 03, 2015	Jul. 04, 2015	Apr. 04, 2015	Jan. 03, 2015	Sep. 27, 2014	Jun. 28, 2014	Mar. 29, 2014	Dec. 28, 2013	Oct. 03, 2015	Sep. 27, 2014	Sep. 28, 2013
Revenue, Major Customer and Product Lines
Net sales	$ 623,224	$ 634,539	$ 637,246	$ 630,523	$ 671,424	$ 683,698	$ 649,878	$ 643,385	$ 2,525,532	$ 2,648,385	$ 2,610,311
Percentage of aftermarket sale in both military and commercial production segment									30.00%	32.00%	32.00%
Sales Arising From Government Prime Or Sub Contracts Including Military Sales									$ 780,259	$ 763,004	$ 807,728
Boeing
Revenue, Major Customer and Product Lines
Sales to Boeing and Boeing Commercial Airplanes									$ 399,082	$ 431,148	$ 366,972
Percentage of sales to Boeing									16.00%	16.00%	14.00%
Boeing Commercial Airplanes
Revenue, Major Customer and Product Lines
Sales to Boeing and Boeing Commercial Airplanes									$ 240,984	$ 243,114	$ 195,100
SensorsAndHandpieces [Member]
Revenue, Major Customer and Product Lines
Net sales									$ 25,079	$ 24,763	$ 23,144

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Percentage of aftermarket sale in commercial production segment.

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Sales arising from U.S. government prime or sub contracts including military sales.

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For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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