Consolidated Statements Of Shareholders' Equity - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-In Capital	Retained Earnings	Treasury Shares At Cost	Stock Employee Compensation Trust (SECT)	Supplemental Retirement Plan (SERP) Trust	Accumulated Other Comprehensive (Loss) Income	Class A Common Stock	Class A Common Stock Treasury Shares At Cost	Class A Common Stock Stock Employee Compensation Trust (SECT)	Class B Common Stock	Class B Common Stock Treasury Shares At Cost	Class B Common Stock Stock Employee Compensation Trust (SECT)	Class B Common Stock Supplemental Retirement Plan (SERP) Trust
Beginning of year at Sep. 28, 2019		$ 51,280	$ 510,546	$ 2,128,739	$ (769,569)	$ (111,492)	$ (71,546)	$ (415,477)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of shares			142		11,887
Equity-based compensation expense			5,661
Adjustment to market - SECT and SERP			(43,704)
Net earnings	$ 9,205			9,205
Dividends (1)				(25,210)
Class A and B shares purchased					(233,101)
Issuance of shares						28,768
Purchase of shares - SECT	(6,774)					(6,774)
Adjustment to market						25,256	18,448
Other comprehensive income (loss)	130,024							130,024
End of year at Oct. 03, 2020	$ 1,243,083	51,280	472,645	2,112,734	(990,783)	(64,242)	(53,098)	(285,453)
Beginning of year - Common stock at Sep. 28, 2019									43,794,935			7,484,778
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Conversion of Class B to Class A									4,294			(4,294)
End of year - Common stock at Oct. 03, 2020									43,799,229			7,480,484
Beginning of year - Shares at Sep. 28, 2019										(11,101,512)	(425,148)		(3,345,489)	(886,300)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares issued related to equity awards										31,943			215,040
Shares purchased										(2,890,429)			(214,428)
Shares issued														408,641
Purchase of shares - SECT														(79,884)
End of year - Shares at Oct. 03, 2020										(13,959,998)	(425,148)		(3,344,877)	(557,543)	(826,170)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Dividends declared per share	$ 0.75
Issuance of shares			7,478		14,139
Equity-based compensation expense			6,859
Adjustment to market - SECT and SERP			22,640
Net earnings	$ 157,220			157,220
Dividends (1)				(32,106)
Class A and B shares purchased					(30,862)
Issuance of shares						679
Purchase of shares - SECT	(4,239)					(4,239)
Adjustment to market						(11,974)	(10,666)
Other comprehensive income (loss)	37,893							37,893
End of year at Oct. 02, 2021	$ 1,400,144	51,280	509,622	2,237,848	(1,007,506)	(79,776)	(63,764)	(247,560)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Conversion of Class B to Class A									4,007			(4,007)
End of year - Common stock at Oct. 02, 2021									43,803,236			7,476,477
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares issued related to equity awards										39,227			346,585
Shares purchased										(236,950)			(180,763)
Shares issued														8,683
Purchase of shares - SECT														(52,020)
End of year - Shares at Oct. 02, 2021										(14,157,721)	(425,148)		(3,179,055)	(600,880)	(826,170)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Dividends declared per share	$ 1.00
Issuance of shares			11,570		11,326
Equity-based compensation expense			7,460
Adjustment to market - SECT and SERP			(12,529)
Net earnings	$ 155,177			155,177
Dividends (1)				(32,970)
Class A and B shares purchased					(50,832)
Issuance of shares						13,250
Purchase of shares - SECT	(14,830)					(14,830)
Adjustment to market						7,754	4,775
Other comprehensive income (loss)	(63,482)							(63,482)
End of year at Oct. 01, 2022	$ 1,436,813	$ 51,280	$ 516,123	$ 2,360,055	$ (1,047,012)	$ (73,602)	$ (58,989)	$ (311,042)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Conversion of Class B to Class A									3,599			(3,599)
End of year - Common stock at Oct. 01, 2022									43,806,835			7,472,878
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares issued related to equity awards										45,201			333,200
Shares purchased										(501,924)			(174,436)
Shares issued														165,592
Purchase of shares - SECT														(176,654)
End of year - Shares at Oct. 01, 2022										(14,614,444)	(425,148)		(3,020,291)	(611,942)	(826,170)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Dividends declared per share	$ 1.03