Condensed Consolidated Statement Of Shareholders' Equity (USD $) In Thousands, except Share data, unless otherwise specified	Total	Class A Common Stock	Class B Common Stock	Retained Earnings	Accumulated Other Comprehensive Loss	Additional Paid-In Capital	Treasury Stock
Balance at December 28, 2014 at Dec. 28, 2014	$ 5,195,431	$ 96	$ 2	$ 718,218	$ (46,541)	$ 4,591,470	$ (67,814)
Balance at December 28, 2014, shares at Dec. 28, 2014		95,708,401	2,438,083
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	36,417			36,417
Other comprehensive loss, net of taxes	(6,335)				(6,335)
Comprehensive Income	30,082
Dividends payable to shareholders and accrued payments to warrant holders, $6.73 per share	(648,644)			(648,644)
Conversions of Class B Common Stock to Class A Common Stock, shares		46,123	(46,123)
Warrant exercises, shares		421,643
Stock-based compensation	7,826					7,826
Net share settlements of stock-based awards	(3,599)					(3,599)
Net share settlements of stock-based awards, shares		123,636
Change in excess tax benefits from stock-based awards	(402)					(402)
Common stock repurchases	(165,174)						(165,174)
Balance at March 29, 2015 at Mar. 29, 2015	$ 4,415,520	$ 96	$ 2	$ 105,991	$ (52,876)	$ 4,595,295	$ (232,988)
Balance at March 29, 2015, shares at Mar. 29, 2015		96,299,803	2,391,960