Basis Of Presentation Basis of Presentation (Impact of Change in Accounting Principle on Consolidated Condensed Statement of Earnings) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 28, 2020	Mar. 30, 2019	Mar. 28, 2020	Mar. 30, 2019
New Accounting Pronouncements or Change in Accounting Principle
Other	$ 2,333	$ 2,342	$ 9,879	$ 7,477
Earnings before income taxes	61,531	53,916	128,435	110,399
Income taxes	11,786	12,857	28,663	26,571
Net earnings	$ 49,745	$ 41,059	$ 99,772	$ 83,828
Earnings per share - Basic	$ 1.49	$ 1.18	$ 2.94	$ 2.41
Earnings per share - Diluted	$ 1.48	$ 1.17	$ 2.91	$ 2.38
Retirement liability adjustment	$ 6,116	$ 5,977	$ 10,479	$ 12,096
Other comprehensive income (loss)	(18,465)	7,004	8,833	4,400
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	31,280	48,063	108,605	88,228
Previously Reported
New Accounting Pronouncements or Change in Accounting Principle
Other		640		4,074
Earnings before income taxes		55,618		113,802
Income taxes		13,259		27,374
Net earnings		$ 42,359		$ 86,428
Earnings per share - Basic		$ 1.21		$ 2.48
Earnings per share - Diluted		$ 1.20		$ 2.46
Retirement liability adjustment		$ 4,677		$ 9,496
Other comprehensive income (loss)		5,704		1,800
Restatement Adjustment
New Accounting Pronouncements or Change in Accounting Principle
Other	2,875	1,702	5,751	3,403
Earnings before income taxes	(2,875)	(1,702)	(5,751)	(3,403)
Income taxes	(678)	(402)	(1,357)	(803)
Net earnings	$ (2,197)	$ (1,300)	$ (4,394)	$ (2,600)
Earnings per share - Basic	$ (0.07)	$ (0.03)	$ (0.13)	$ (0.07)
Earnings per share - Diluted	$ (0.07)	$ (0.03)	$ (0.12)	$ (0.08)
Retirement liability adjustment	$ 2,197	$ 1,300	$ 4,394	$ 2,600
Other comprehensive income (loss)	2,197	1,300	4,394	2,600
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	0	0	0	0
Previous Accounting Guidance
New Accounting Pronouncements or Change in Accounting Principle
Other	5,208		15,630
Earnings before income taxes	58,656		122,684
Income taxes	11,108		27,306
Net earnings	$ 47,548		$ 95,378
Earnings per share - Basic	$ 1.42		$ 2.81
Earnings per share - Diluted	$ 1.41		$ 2.79
Retirement liability adjustment	$ 8,313		$ 14,873
Other comprehensive income (loss)	(16,268)		13,227
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	$ 31,280	$ 48,063	$ 108,605	$ 88,228