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Investments - Additional Information (Detail) (USD $)
12 Months Ended
Dec. 25, 2011
Dec. 26, 2010
Dec. 27, 2009
Schedule of Equity Method Investments [Line Items]      
Aggregate carrying value of equity investments $ 133,000,000    
Pretax earnings (losses) recorded for the investment under equity method 8,197,000 19,140,000 3,927,000
Dividends received from investees 42,900,000 51,800,000 23,000,000
Net equity income, impairment charges related to certain digital business investments 58,000,000 60,000,000 170,000,000
Advertising revenues 2,511,025,000 2,710,524,000 2,888,034,000
Publishing
     
Schedule of Equity Method Investments [Line Items]      
Pretax earnings (losses) recorded for the investment under equity method 8,543,000 19,337,000 4,010,000
Net equity income, impairment charges related to certain digital business investments 27,000,000 36,000,000 99,000,000
Advertising revenues 154,000,000 142,000,000 135,000,000
Non-Operating Charges | Equity Method Investments
     
Schedule of Equity Method Investments [Line Items]      
Net equity income, impairment charges related to certain digital business investments 16,000,000 3,000,000 9,000,000
Non-Operating Charges | Publishing
     
Schedule of Equity Method Investments [Line Items]      
Net equity income, impairment charges related to certain digital business investments     $ 28,000,000