Consolidated Statements of Shareholders' Equity Statement - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Retained Earnings	Treasury Stock	Stock Employee Compensation Trust (SECT)	Supplemental Retirement Plan (SERP) Trust	Accumulated Other Comprehensive Loss	Class A Common Stock	Class A Common Stock Treasury Stock	Class A Common Stock Stock Employee Compensation Trust (SECT)	Class B Common Stock	Class B Common Stock Treasury Stock	Class B Common Stock Stock Employee Compensation Trust (SECT)	Class B Common Stock Supplemental Retirement Plan (SERP) Trust
Beginning of period at Sep. 28, 2024		$ 51,280	$ 784,509	$ 2,635,950	$ (1,082,240)	$ (194,049)	$ (163,821)	$ (202,812)
Increase (Decrease) in Stockholders' Equity
Issuance of shares			2,413		773
Equity-based compensation expense			3,346
Adjustments to market - SECT and SERP			(13,208)
Net earnings	$ 57,526			57,526
Dividends				(8,961)
Class A and B shares purchased					(59,775)
Issuance of shares - SECT						9,665
Purchase of shares - SECT	(8,087)					(8,087)
Adjustment to market						6,252	6,956
Other comprehensive income (loss)	(39,183)							(39,183)
End of period at Dec. 28, 2024	$ 1,786,534	51,280	777,060	2,684,515	(1,141,242)	(186,219)	(156,865)	(241,995)
Beginning of period - Common Stock at Sep. 28, 2024									43,835,149			7,444,564
Increase (Decrease) in Stockholders' Equity
Conversion of Class B to Class A									7,672			(7,672)
End of period - Common Stock at Dec. 28, 2024									43,842,821			7,436,892
Beginning of period - Treasury Shares at Sep. 28, 2024									(14,633,512)			(2,861,088)
Increase (Decrease) in Stockholders' Equity
Class A and B shares issued related to equity compensation, shares										12,333			67,873
Class A and B shares purchased, shares										(224,107)			(73,388)
End of period - Treasury Shares at Dec. 28, 2024									(14,845,286)			(2,866,603)
Beginning of period, Shares at Sep. 28, 2024											(425,148)			(548,084)	(826,170)
Increase (Decrease) in Stockholders' Equity
Issuance of shares - SECT														45,099
Purchase of shares - SECT														(38,485)
End of period, Shares at Dec. 28, 2024											(425,148)			(541,470)	(826,170)
Increase (Decrease) in Stockholders' Equity
Common Stock, Dividends, Per Share, Declared	$ 0.28
Beginning of period at Sep. 27, 2025	$ 1,992,555	51,280	839,328	2,834,548	(1,209,200)	(195,491)	(170,191)	(157,719)
Increase (Decrease) in Stockholders' Equity
Issuance of shares			5,779		6,172
Equity-based compensation expense			3,980
Adjustments to market - SECT and SERP			71,094
Net earnings	78,851			78,851
Dividends				(9,193)
Class A and B shares purchased					(38,586)
Issuance of shares - SECT						27,233
Purchase of shares - SECT	(6,914)					(6,914)
Adjustment to market						(39,700)	(31,394)
Other comprehensive income (loss)	5,923							5,923
End of period at Jan. 03, 2026	$ 2,065,800	$ 51,280	$ 920,181	$ 2,904,206	$ (1,241,614)	$ (214,872)	$ (201,585)	$ (151,796)
Beginning of period - Common Stock at Sep. 27, 2025									43,863,458			7,416,255
Increase (Decrease) in Stockholders' Equity
Conversion of Class B to Class A									0			0
End of period - Common Stock at Jan. 03, 2026									43,863,458			7,416,255
Beginning of period - Treasury Shares at Sep. 27, 2025									(15,013,457)			(2,825,989)
Increase (Decrease) in Stockholders' Equity
Class A and B shares issued related to equity compensation, shares										8,852			163,611
Class A and B shares purchased, shares										(5,289)			(159,655)
End of period - Treasury Shares at Jan. 03, 2026									(15,009,894)			(2,822,033)
Beginning of period, Shares at Sep. 27, 2025											(425,148)			(526,644)	(826,170)
Increase (Decrease) in Stockholders' Equity
Issuance of shares - SECT														112,737
Purchase of shares - SECT														(31,339)
End of period, Shares at Jan. 03, 2026											(425,148)			(445,246)	(826,170)
Increase (Decrease) in Stockholders' Equity
Common Stock, Dividends, Per Share, Declared	$ 0.29