Segments (Segment Information And Reconciliations To Consolidated Amounts) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Sep. 30, 2017	Jul. 01, 2017	Apr. 01, 2017	Dec. 31, 2016	Oct. 01, 2016	Jul. 02, 2016	Apr. 02, 2016	Jan. 02, 2016	Sep. 30, 2017	Oct. 01, 2016	Oct. 03, 2015
Segment Reporting Information
Net sales	$ 649,268	$ 626,183	$ 632,403	$ 589,670	$ 619,078	$ 613,260	$ 611,142	$ 568,457	$ 2,497,524	$ 2,411,937	$ 2,525,532
Total operating profit									250,152	238,242	245,513
Interest									34,551	34,605	28,967
Equity-based compensation expense									4,582	3,271	5,074
Corporate expenses and other									29,308	27,506	27,638
Earnings before income taxes									181,711	172,860	183,834
Depreciation and amortization									90,167	98,732	103,609
Identifiable assets	3,090,592				3,004,974				3,090,592	3,004,974	3,036,573
Capital expenditures									75,798	67,208	80,693
Aircraft Controls
Segment Reporting Information
Net sales									1,124,885	1,063,718	1,086,547
Total operating profit									114,016	98,509	100,006
Depreciation and amortization									41,977	46,541	51,385
Identifiable assets	1,120,099				1,114,672				1,120,099	1,114,672	1,177,587
Capital expenditures									36,216	28,437	47,389
Space And Defense Controls
Segment Reporting Information
Net sales									394,264	366,091	381,444
Total operating profit									37,591	41,419	33,236
Depreciation and amortization									15,554	16,033	14,054
Identifiable assets	423,497				434,620				423,497	434,620	426,441
Capital expenditures									11,451	7,498	9,022
Industrial Systems
Segment Reporting Information
Net sales									477,325	514,984	521,505
Total operating profit									46,091	48,542	45,021
Depreciation and amortization									17,440	20,487	20,731
Identifiable assets	586,278				577,015				586,278	577,015	590,258
Capital expenditures									13,823	15,276	15,371
Components
Segment Reporting Information
Net sales									501,050	467,144	536,036
Total operating profit									52,454	49,772	67,250
Depreciation and amortization									14,085	14,422	16,576
Identifiable assets	690,307				636,731				690,307	636,731	579,898
Capital expenditures									13,852	15,576	8,371
Corporate
Segment Reporting Information
Depreciation and amortization									1,111	1,249	863
Identifiable assets	$ 270,411				$ 241,936				270,411	241,936	262,389
Capital expenditures									$ 456	$ 421	$ 540