CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (USD $) In Thousands, unless otherwise specified	Total	Common stock	Additional paid-in capital	Retained earnings	Accumulated other comprehensive income (loss)	Treasury stock	Noncontrolling interest in consolidated subsidiaries
Balance at Dec. 26, 2009	$ 808,307	$ 27,900		$ 767,398	$ 16,953	$ (25,990)	$ 22,046
Increase (Decrease) in Shareholders' Equity
Net earnings	100,413			94,379			6,034
Other comprehensive income (loss)	49,700				46,692		3,008
Cash dividends declared ($0.855, $0.705 and $0.645 per share for the period ended December 2012, 2011 and 2010, respectively)	(16,992)			(16,992)
Acquisition of Delta plc	79,529						79,529
Dividends to noncontrolling interests	(13,071)						(13,071)
Purchase of noncontrolling interest	(7,065)		(3,754)				(3,311)
Purchase of 53,847 and 12,351 treasury shares for the period ended December 2011 and 2010, respectively	(876)					(876)
Stock plan exercises; 174,943, 184,639 and 109,711 shares acquired for the period ended December 2012, 2011 and 2010, respectively	(3,260)					(3,260)
Stock options exercised; 341,090, 306,218 and 43,104 shares issued for the period ended 2012, 2011 and 2010, respectively	4,464		(4,574)	5,484		3,554
Tax benefit from stock option exercises	2,021		2,021
Stock option expense	4,944		4,944
Stock awards; 20,998, 23,968 and 9,088 shares issued for the period ended December 2012, 2011 and 2010, respectively	2,013		1,363			650
Balance at Dec. 25, 2010	1,010,127	27,900		850,269	63,645	(25,922)	94,235
Increase (Decrease) in Shareholders' Equity
Net earnings	237,226			228,308			8,918
Other comprehensive income (loss)	(1,500)				407		(1,907)
Cash dividends declared ($0.855, $0.705 and $0.645 per share for the period ended December 2012, 2011 and 2010, respectively)	(18,642)			(18,642)
Dividends to noncontrolling interests	(4,958)						(4,958)
Purchase of noncontrolling interest	(25,253)		16,592				(41,845)
Other changes in noncontrolling interest	(3,494)						(3,494)
Purchase of 53,847 and 12,351 treasury shares for the period ended December 2011 and 2010, respectively	(4,802)					(4,802)
Stock plan exercises; 174,943, 184,639 and 109,711 shares acquired for the period ended December 2012, 2011 and 2010, respectively	(20,090)					(20,090)
Stock options exercised; 341,090, 306,218 and 43,104 shares issued for the period ended 2012, 2011 and 2010, respectively	20,008		(25,556)	19,763		25,801
Tax benefit from stock option exercises	3,033		3,033
Stock option expense	5,623		5,623
Stock awards; 20,998, 23,968 and 9,088 shares issued for the period ended December 2012, 2011 and 2010, respectively	633		308			325
Balance at Dec. 31, 2011	1,197,911	27,900		1,079,698	64,052	(24,688)	50,949
Increase (Decrease) in Shareholders' Equity
Net earnings	238,916			234,072			4,844
Other comprehensive income (loss)	(18,879)				(20,114)		1,235
Cash dividends declared ($0.855, $0.705 and $0.645 per share for the period ended December 2012, 2011 and 2010, respectively)	(22,756)			(22,756)
Dividends to noncontrolling interests	(1,944)						(1,944)
Sale of partial ownership interest	1,404		(610)				2,014
Stock plan exercises; 174,943, 184,639 and 109,711 shares acquired for the period ended December 2012, 2011 and 2010, respectively	(21,259)					(21,259)
Stock options exercised; 341,090, 306,218 and 43,104 shares issued for the period ended 2012, 2011 and 2010, respectively	21,827		(10,713)	9,515		23,025
Tax benefit from stock option exercises	5,494		5,494
Stock option expense	4,934		4,934
Stock awards; 20,998, 23,968 and 9,088 shares issued for the period ended December 2012, 2011 and 2010, respectively	1,362		895			467
Balance at Dec. 29, 2012	$ 1,407,010	$ 27,900		$ 1,300,529	$ 43,938	$ (22,455)	$ 57,098