Restructuring (Restructuring Activity) (Details) - USD ($) $ in Thousands	3 Months Ended						6 Months Ended		9 Months Ended		12 Months Ended
	Jun. 28, 2025	Mar. 29, 2025	Dec. 28, 2024	Jun. 29, 2024	Mar. 30, 2024	Dec. 30, 2023	Mar. 29, 2025	Mar. 30, 2024	Jun. 28, 2025	Jun. 29, 2024	Sep. 27, 2025	Sep. 28, 2024	Sep. 30, 2023
Restructuring Reserve [Roll Forward]
Balance at beginning of period			$ 12,178			$ 10,177	$ 12,178	$ 10,177	$ 12,178	$ 10,177	$ 12,178	$ 10,177	$ 7,135
Charged to expense	$ 2,850	$ 2,425	3,784	$ 3,984	$ 6,750	1,889	6,209	8,639	9,059	12,623	10,015	23,788	7,997
Adjustment to provision											(697)	(1,955)	(577)
Foreign currency translation											600	513	303
Balance at end of period											8,829	12,178	10,177
2018 Plan
Restructuring Reserve [Roll Forward]
Cash payments											(400)	(399)	(359)
Balance at end of period											474
2020 Plan
Restructuring Reserve [Roll Forward]
Cash payments											(170)	(485)	(372)
Balance at end of period											20
2022 Plan
Restructuring Reserve [Roll Forward]
Cash payments											(32)	(464)	(2,304)
Balance at end of period											192
2023 Plan
Restructuring Reserve [Roll Forward]
Charged to expense											1,972	3,766	8,574
Cash payments											(1,277)	(5,666)	(2,223)
Balance at end of period											4,903
2024 Plan
Restructuring Reserve [Roll Forward]
Charged to expense											8,043	21,799
Non-cash charges											(1,180)	(8,275)
Cash payments											(10,208)	(6,833)
Balance at end of period											3,240
Space And Defense
Restructuring Reserve [Roll Forward]
Balance at beginning of period			1,400			1,622	1,400	1,622	1,400	1,622	1,400	1,622	228
Adjustment to provision											0	(178)	(37)
Foreign currency translation											171	0	(9)
Balance at end of period											2,298	1,400	1,622
Space And Defense | 2018 Plan
Restructuring Reserve [Roll Forward]
Cash payments											0	0	0
Space And Defense | 2020 Plan
Restructuring Reserve [Roll Forward]
Cash payments											0	0	0
Space And Defense | 2022 Plan
Restructuring Reserve [Roll Forward]
Cash payments											0	0	(190)
Space And Defense | 2023 Plan
Restructuring Reserve [Roll Forward]
Charged to expense											0	0	2,308
Cash payments											0	(1,444)	(678)
Space And Defense | 2024 Plan
Restructuring Reserve [Roll Forward]
Charged to expense											2,046	6,307
Non-cash charges											(448)	(4,907)
Cash payments											(871)	0
Military Aircraft
Restructuring Reserve [Roll Forward]
Balance at beginning of period			624			347	624	347	624	347	624	347	229
Adjustment to provision											0	(139)	(15)
Foreign currency translation											0	0	(1)
Balance at end of period											0	624	347
Military Aircraft | 2018 Plan
Restructuring Reserve [Roll Forward]
Cash payments											0	0	0
Military Aircraft | 2020 Plan
Restructuring Reserve [Roll Forward]
Cash payments											0	0	0
Military Aircraft | 2022 Plan
Restructuring Reserve [Roll Forward]
Cash payments											0	0	(229)
Military Aircraft | 2023 Plan
Restructuring Reserve [Roll Forward]
Charged to expense											0	0	458
Cash payments											0	(208)	(95)
Military Aircraft | 2024 Plan
Restructuring Reserve [Roll Forward]
Charged to expense											0	3,973
Non-cash charges											0	(733)
Cash payments											(624)	(2,616)
Commercial Aircraft
Restructuring Reserve [Roll Forward]
Balance at beginning of period			760			0	760	0	760	0	760	0	0
Adjustment to provision											0	0	0
Foreign currency translation											0	0	0
Balance at end of period											0	760	0
Commercial Aircraft | 2018 Plan
Restructuring Reserve [Roll Forward]
Cash payments											0	0	0
Commercial Aircraft | 2020 Plan
Restructuring Reserve [Roll Forward]
Cash payments											0	0	0
Commercial Aircraft | 2022 Plan
Restructuring Reserve [Roll Forward]
Cash payments											0	0	0
Commercial Aircraft | 2023 Plan
Restructuring Reserve [Roll Forward]
Charged to expense											0	0	0
Cash payments											0	0	0
Commercial Aircraft | 2024 Plan
Restructuring Reserve [Roll Forward]
Charged to expense											0	1,237
Non-cash charges											0	0
Cash payments											(760)	(477)
Industrial
Restructuring Reserve [Roll Forward]
Balance at beginning of period			$ 9,394			$ 8,208	$ 9,394	$ 8,208	$ 9,394	$ 8,208	9,394	8,208	6,678
Adjustment to provision											(697)	(1,638)	(525)
Foreign currency translation											429	513	313
Balance at end of period											6,531	9,394	8,208
Industrial | 2018 Plan
Restructuring Reserve [Roll Forward]
Cash payments											(400)	(399)	(359)
Industrial | 2020 Plan
Restructuring Reserve [Roll Forward]
Cash payments											(170)	(485)	(372)
Industrial | 2022 Plan
Restructuring Reserve [Roll Forward]
Cash payments											(32)	(464)	(1,885)
Industrial | 2023 Plan
Restructuring Reserve [Roll Forward]
Charged to expense											1,972	3,766	5,808
Cash payments											(1,277)	(4,014)	$ (1,450)
Industrial | 2024 Plan
Restructuring Reserve [Roll Forward]
Charged to expense											5,997	10,282
Non-cash charges											(732)	(2,635)
Cash payments											$ (7,953)	$ (3,740)