Debt Obligations - Debt Information (Details) (USD $) Share data in Millions, unless otherwise specified	1 Months Ended	3 Months Ended					12 Months Ended			0 Months Ended	1 Months Ended			0 Months Ended	3 Months Ended		12 Months Ended		1 Months Ended
	Nov. 30, 2012	Mar. 31, 2013	Dec. 30, 2012	Sep. 23, 2012	Jun. 24, 2012	Mar. 25, 2012	Dec. 29, 2013	Dec. 30, 2012	Dec. 25, 2011	Sep. 26, 2012 Notes Due 2012 [Member]	Dec. 30, 2012 Notes Due 2015 [Member]	Dec. 29, 2013 Notes Due 2015 [Member]	Mar. 31, 2005 Notes Due 2015 [Member]	Aug. 15, 2011 Notes Due 2015 Called 2011 [Member]	Sep. 25, 2011 Notes Due 2015 Called 2011 [Member]	Jan. 31, 2009 Notes Due 2015 Called 2011 [Member]	Dec. 29, 2013 Notes Due 2016 [Member]	Nov. 30, 2010 Notes Due 2016 [Member]	Mar. 31, 2009 Option To Repurchase Headquarters Building 2019 [Member]	Jan. 31, 2009 Carlos Slim Helu [Member]
Debt Information
Debt repaid										$ 75,000,000
Interest rate on debt										4.61%		5.00%	5.00%			14.053%	6.625%	6.625%
Debt instrument, face amount													250,000,000			250,000,000		225,000,000	225,000,000
Redemption of long-term debt							0	0	250,000,000		5,900,000			280,000,000			17,400,000
Premium (charge) on debt redemption	(1,400,000)	0	0	0	0	0	0	0	(46,381,000)		(400,000)				(46,400,000)		(2,100,000)
Percentage of principle available for debt redemption													100.00%					100.00%
Warrants issued In connection with debt issuance																15.9
Class of warrant or right, exercise price of warrants or rights (USD per warrant)																6.3572
Class A common stock ownership percentage																				8.00%
Accrued and unpaid interest for prepayment of 14.053% Notes														3,000,000
Make-whole premium amount for redemption of 14.053% Notes														27,000,000
Sale leaseback financing, lease term																			15 years
Sale leaseback financing, lease renewal term																			20 years
Sale leaseback purchase option price																			250,000,000
Proceeds from sale-leaseback financing																			211,000,000
Debt instrument, fee amount																			$ 39,000,000
Sale leaseback financing, amortization period																			10 years
Debt instrument, interest rate, effective percentage																			13.00%