Segments (Operating Profit By Segment And Reconciliation Of Segment Operating Profit To Earnings Before Income Taxes) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 29, 2025	Mar. 30, 2024	Mar. 29, 2025	Mar. 30, 2024
Segment Reporting Information
Operating profit	$ 109,307	$ 112,012	$ 210,464	$ 206,548
Deductions from operating profit:
Interest expense	19,548	18,003	36,550	34,697
Equity-based compensation expense	3,695	3,047	$ 8,020	7,212
Non-service pension expense			Other Nonoperating Income (Expense)
Non-service pension expense	1,939	3,191	$ 3,885	6,378
Corporate and other expenses, net	10,546	9,022	19,851	16,901
Earnings before income taxes	73,579	78,749	142,158	141,360
Space And Defense
Segment Reporting Information
Operating profit	32,781	42,243	61,320	67,540
Military Aircraft
Segment Reporting Information
Operating profit	23,722	16,769	46,638	36,358
Commercial Aircraft
Segment Reporting Information
Operating profit	25,591	24,845	49,795	45,471
Industrial
Segment Reporting Information
Operating profit	$ 27,213	$ 28,155	$ 52,711	$ 57,179