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Capital Transactions - Additional Information (Detail) (USD $)
In Millions, except Share data, unless otherwise specified
 12 Months Ended 0 Months Ended 12 Months Ended 0 Months Ended
Dec. 29, 2013
Vote
Stock
Dec. 30, 2012
Jan. 01, 2012
Dec. 27, 2013
Dec. 28, 2012
Dec. 30, 2011
Mar. 05, 2013
Class B Common Stock [Member]
Mar. 06, 2012
Class B Common Stock [Member]
Dec. 29, 2013
Class B Common Stock [Member]
Vote
Dec. 30, 2012
Class B Common Stock [Member]
Jan. 01, 2012
Class B Common Stock [Member]
Dec. 28, 2014
Class B Common Stock [Member]
Scenario, Forecast [Member]
Mar. 04, 2014
Class B Common Stock [Member]
Subsequent Event [Member]
Schedule of Capitalization, Equity [Line Items]                          
Number of classes of common stock outstanding 2                        
Dividend is declared and paid on the Common Stock $ 1.00 $ 1.00 $ 1.00           $ 1.00 $ 1.00 $ 1.00    
Number of votes per share 1               20        
Performance Unit Award Agreement expense recognized $ 2.9 $ 2.6 $ 2.3                    
Share price       $ 72.98 $ 65.58 $ 58.55              
Performance units awarded             40,000 40,000         40,000
Performance units awards settled in cash                 19,880 17,680   19,100  
Increase in total number of shares outstanding                 20,120 22,320 22,320