CONDENSED CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY - USD ($) $ in Thousands		Total		Common stock		Additional paid-in capital		Retained earnings		Accumulated other comprehensive income (loss)		Treasury stock		Noncontrolling interest in consolidated subsidiaries		Cumulative Effect, Period of Adoption, Adjustment	Cumulative Effect, Period of Adoption, Adjustment Retained earnings
Increase (Decrease) in Shareholders' Equity
Impact of ASC 842 adoption		$ 1,175,738	[1]	$ 27,900	[1]	$ 0	[1]	$ 2,067,811	[1]	$ (303,185)	[1]	$ (692,549)	[1]	$ 75,761	[1]	$ (8,886)	$ (8,886)
Beginning balance at Dec. 29, 2018		1,175,738	[1]	27,900	[1]	0	[1]	2,067,811	[1]	(303,185)	[1]	(692,549)	[1]	75,761	[1]	(8,886)	(8,886)
Increase (Decrease) in Shareholders' Equity
Impact of ASC 842 adoption		1,175,738	[1]	27,900	[1]	0	[1]	2,067,811	[1]	(316,717)	[1]	(692,549)	[1]	75,761	[1]	$ (8,886)	$ (8,886)
Net earnings		117,910						113,868						4,042
Other comprehensive income (loss)		(14,184)								(13,532)				(652)
Cash dividends declared		(24,424)						(24,424)
Dividends to noncontrolling interests		(6,549)												(6,549)
Purchase of noncontrolling interest		(27,845)				277								(28,122)
Purchase of treasury shares, shares acquired		(55,172)										(55,172)
Stock plan exercises, shares acquired		(1,456)										(1,456)
Stock options exercised		3,211				(7,756)		7,535				3,432
Stock option expense		2,056				2,056
Stock awards		6,833				5,423						1,410
Ending balance at Sep. 28, 2019	[1]	$ 1,167,232		27,900		0		2,155,904		(316,717)		(744,335)		44,480
Increase (Decrease) in Shareholders' Equity
Accounting Standards Update [Extensible List]		us-gaap:AccountingStandardsUpdate201602Member
Impact of ASC 842 adoption	[1]	$ 1,165,174		27,900		0		2,123,754		(303,072)		(728,680)		45,272
Beginning balance at Jun. 29, 2019	[1]	1,165,174		27,900		0		2,123,754		(303,072)		(728,680)		45,272
Increase (Decrease) in Shareholders' Equity
Impact of ASC 842 adoption	[1]	1,167,232		27,900		0		2,155,904		(316,717)		(744,335)		44,480
Net earnings		40,164						38,045						2,119
Other comprehensive income (loss)		(14,466)								(13,645)				(821)
Cash dividends declared		(8,085)						(8,085)
Dividends to noncontrolling interests		(2,090)												(2,090)
Purchase of treasury shares, shares acquired		(16,822)										(16,822)
Stock plan exercises, shares acquired		(629)										(629)
Stock options exercised		1,467				(2,514)		2,190				1,791
Stock option expense		600				600
Stock awards		1,919				1,914						5
Ending balance at Sep. 28, 2019	[1]	1,167,232		27,900		0		2,155,904		(316,717)		(744,335)		44,480
Increase (Decrease) in Shareholders' Equity
Impact of ASC 842 adoption	[1]	1,167,232		27,900		0		2,155,904		(316,717)		(744,335)		44,480
Impact of ASC 842 adoption	[1]	1,189,745		27,900		0		2,173,802		(313,422)		(743,942)		45,407
Beginning balance at Dec. 28, 2019	[1]	1,189,745		27,900		0		2,173,802		(313,422)		(743,942)		45,407
Increase (Decrease) in Shareholders' Equity
Impact of ASC 842 adoption	[1]	1,189,745		27,900		0		2,173,802		(322,334)		(770,802)		27,225
Net earnings		105,703						104,878						825
Other comprehensive income (loss)		(7,952)								(8,912)				960
Cash dividends declared		(28,837)						(28,837)
Dividends to noncontrolling interests		(5,642)												(5,642)
Purchase of noncontrolling interest		(50,111)				0		(30,661)						(19,450)
Addition of noncontrolling interest		5,125												5,125
Purchase of treasury shares, shares acquired		(28,006)										(28,006)
Stock plan exercises, shares acquired		(77)										(77)
Stock options exercised		980				244						736
Stock option expense		1,909				1,909
Stock awards		6,827				6,340						487
Ending balance at Sep. 26, 2020	[1]	1,189,664		27,900		8,493		2,219,182		(322,334)		(770,802)		27,225
Increase (Decrease) in Shareholders' Equity
Impact of ASC 842 adoption		1,152,702		27,900		0		2,194,916	[1]	(332,486)		(763,495)		25,867
Beginning balance at Jun. 27, 2020		1,152,702		27,900		0		2,194,916	[1]	(332,486)		(763,495)		25,867
Increase (Decrease) in Shareholders' Equity
Impact of ASC 842 adoption		1,152,702		27,900	[1]	8,493	[1]	2,219,182	[1]	(322,334)	[1]	(770,802)	[1]	27,225	[1]
Net earnings		40,228						39,342						886
Other comprehensive income (loss)		10,624								10,152				472
Cash dividends declared		(9,614)						(9,614)
Purchase of treasury shares, shares acquired		(7,525)										(7,525)
Stock plan exercises, shares acquired		(72)										(72)
Stock options exercised		256				5,461		(5,462)				257
Stock option expense		686				686
Stock awards		2,379				2,346						33
Ending balance at Sep. 26, 2020	[1]	1,189,664		27,900		8,493		2,219,182		(322,334)		(770,802)		27,225
Increase (Decrease) in Shareholders' Equity
Impact of ASC 842 adoption	[1]	$ 1,189,664		$ 27,900		$ 8,493		$ 2,219,182		$ (322,334)		$ (770,802)		$ 27,225

[1] The retained earnings balance has been revised from the amounts previously reported as a result of the change in inventory valuation method from              LIFO to FIFO. Refer to Note 1 for additional information.