Common Stock and Share-Based Compensation - Additional Information (Detail) (USD $)	12 Months Ended					1 Months Ended		12 Months Ended	1 Months Ended			1 Months Ended	12 Months Ended	1 Months Ended	3 Months Ended	12 Months Ended			1 Months Ended	12 Months Ended			1 Months Ended	12 Months Ended					12 Months Ended																	1 Months Ended
	Dec. 29, 2012	Dec. 31, 2011	Dec. 25, 2010	Oct. 01, 2012	Dec. 26, 2009	Oct. 01, 2012 Before Amendment	Oct. 01, 2012 After Amendment	Dec. 25, 2010 Chief Executive Officer	Jan. 01, 2008 Chief Executive Officer Maximum	Jan. 01, 2008 Chief Executive Officer Minimum	Dec. 29, 2012 Performance-Based Options	Apr. 23, 2010 Performance-Based Options Chief Executive Officer	Dec. 31, 2005 Performance-Based Options Chief Executive Officer	Jan. 01, 2008 Market Based Stock Option Chief Executive Officer	Dec. 26, 2009 Market Based Stock Option Chief Executive Officer	Dec. 29, 2012 Market Based Stock Option Chief Executive Officer	Dec. 31, 2011 Market Based Stock Option Chief Executive Officer	Dec. 25, 2010 Market Based Stock Option Chief Executive Officer	Aug. 31, 2007 Cliff Vesting Chief Executive Officer	Dec. 29, 2012 Cliff Vesting Chief Executive Officer	Dec. 31, 2011 Cliff Vesting Chief Executive Officer	Dec. 25, 2010 Cliff Vesting Chief Executive Officer	Apr. 23, 2010 Applicable Performance Criteria Not Met Chief Executive Officer	Dec. 29, 2012 Employee Stock Compensation Plan	Dec. 31, 2011 Employee Stock Compensation Plan	Dec. 25, 2010 Employee Stock Compensation Plan	Dec. 29, 2012 Employee Stock Compensation Plan Maximum Y	Dec. 29, 2012 Employee Stock Compensation Plan Common Class A	Dec. 29, 2012 Employee Stock Compensation Plan Performance-Based Options	Dec. 31, 2011 Employee Stock Compensation Plan Performance-Based Options	Dec. 29, 2012 Employee Stock Compensation Plan Special Long-Term Service Based Retention Stock Options	Dec. 31, 2011 Employee Stock Compensation Plan Special Long-Term Service Based Retention Stock Options	Dec. 29, 2012 Employee Stock Compensation Plan Investment Share Program	Dec. 31, 2011 Employee Stock Compensation Plan Investment Share Program	Dec. 25, 2010 Employee Stock Compensation Plan Investment Share Program	Dec. 29, 2012 Employee Stock Compensation Plan Investment Share Program Maximum	Dec. 29, 2012 Employee Stock Compensation Plan Investment Share Program Minimum	Dec. 29, 2012 Employee Stock Compensation Plan Restricted Stock Awards	Dec. 31, 2011 Employee Stock Compensation Plan Restricted Stock Awards	Dec. 25, 2010 Employee Stock Compensation Plan Restricted Stock Awards	Dec. 29, 2012 Non Employee Director Options	Dec. 31, 2011 Non Employee Director Options	Dec. 25, 2010 Non Employee Director Options	Dec. 29, 2012 Non Employee Director Options Maximum Y	Dec. 29, 2012 Non Employee Director Options Common Class A	Jan. 01, 2013 Issuance of Equity Employee Stock Compensation Plan	Jan. 01, 2013 Issuance of Equity Employee Stock Compensation Plan Key Employees	Jan. 01, 2013 Issuance of Equity Employee Stock Compensation Plan Restricted Stock Awards	Jan. 01, 2013 Repurchase of Equity Employee Stock Compensation Plan Investment Share Program
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period														5 years					6 years					5 years									5 years					5 years									4 years
Stock options, contractual term																											10																	10
Options granted in period													120,000	753,864					180,000					42,600	228,200	65,100			11,100	13,200	31,500	215,000									17,367	30,000	30,000			40,925	15,000
Options granted in period - weighted average fair value	$ 45.03	$ 43.07	$ 21.96																																											$ 58.83
Percentage of shares vesting on January 1, XXX																																															60.00%
Other than options granted in period	29,735																																					16,375	17,687	33,617								11,530
Requirement tenure of employee for investment share program																																					1 year
Discount from current market value																																				40.00%	0.00%
Payroll deduction period																																	11 months
Shares employees elected to purchase																																	13,360	12,985	20,392														12,894
Shares reserved for issuance																												6,000,000																	550,000
Shares available for grant																												900,000																	125,133
Shares reserved for issuance and options outstanding	1,718,116	1,908,664									381,470
Vesting percentage per year														20.00%
Stock price														42.00
Options granted in period exercise price									$ 70	$ 37.65
Weighted average fair value per share														$ 8.41					$ 19.39
Stock-based compensation expense	$ 6,528,000	$ 6,178,000	$ 3,124,000												$ 900,000	$ 800,000	$ 800,000	$ 700,000		$ 600,000	$ 500,000	$ 500,000
Number of performance criteria												3											1
Options expired in period								120,000				120,000
Reversal of stock-based compensation expense								872,000										900,000
Reversal of stock-based compensation expense impact on dilutive shares																		$ (0.04)
Expected dividends	0.00%	0.00%	0.00%
Estimated forfeiture rate for equity awards that do not vest on January 1st	8.50%	8.50%	8.50%
Total fair value of options vested in period	2,000,000	1,800,000	1,400,000
Aggregate intrinsic value of stock options exercised in period	20,900,000	11,600,000	8,500,000
Unrecognized compensation costs	13,735,000																							700,000
Unrecognized compensation costs, weighted average period	2 years 7 months 6 days
Increase to the expenditure limit for the Company's Stock Repurchase Program				25,000,000
Stock Repurchase Program limit						275,000,000	300,000,000
Repurchased shares of Class A Common Stock	10,696,731	10,531,539	9,771,503		8,669,795
Repurchased value of Class A Common Stock	$ 269,942,000	$ 251,896,000	$ 189,072,000		$ 121,091,000