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Summary of Facility Consolidation and Asset Impairment Charges (Detail) (USD $)
In Thousands, except Per Share data, unless otherwise specified
 12 Months Ended
Dec. 29, 2013
Dec. 30, 2012
Dec. 25, 2011
Unusual or Infrequent Item [Line Items]      
Asset Impairment And Other Charges Before Tax $ 61,745 [1] $ 129,165 $ 57,511
Asset impairment and other charges, after-tax amount 37,045 [1] 110,465 35,811
Asset impairment and other charges, per share amount $ 0.16 [1] $ 0.47 [1] $ 0.15
Broadcasting
      
Unusual or Infrequent Item [Line Items]      
Asset Impairment And Other Charges Before Tax 1,000    
Publishing
      
Unusual or Infrequent Item [Line Items]      
Asset Impairment And Other Charges Before Tax 46,000 32,000 27,000
Digital
      
Unusual or Infrequent Item [Line Items]      
Asset Impairment And Other Charges Before Tax 12,000 90,000  
Operations
      
Unusual or Infrequent Item [Line Items]      
Asset Impairment And Other Charges Before Tax 58,240 [1] 122,129 27,243
Asset impairment and other charges, after-tax amount 34,840 [1] 106,129 17,543
Asset impairment and other charges, per share amount $ 0.15 [1] $ 0.45 [1] $ 0.07
Operations | Property Plant and Equipment
      
Unusual or Infrequent Item [Line Items]      
Asset Impairment And Other Charges Before Tax     17,085
Asset impairment and other charges, after-tax amount     10,282
Asset impairment and other charges, per share amount     $ 0.04
Operations | Property Plant and Equipment | Publishing
      
Unusual or Infrequent Item [Line Items]      
Asset Impairment And Other Charges Before Tax 14,756 [1] 29,520 17,085
Asset impairment and other charges, after-tax amount 8,856 [1] 17,920 10,282
Asset impairment and other charges, per share amount $ 0.04 [1] $ 0.08 [1] $ 0.04
Operations | Other Asset
      
Unusual or Infrequent Item [Line Items]      
Asset Impairment And Other Charges Before Tax 10,487 [1]   10,158
Asset impairment and other charges, after-tax amount 6,287 [1]   7,261
Asset impairment and other charges, per share amount $ 0.03 [1]   $ 0.03
Operations | Other Asset | Broadcasting
      
Unusual or Infrequent Item [Line Items]      
Asset Impairment And Other Charges Before Tax 1,033 [1]    
Asset impairment and other charges, after-tax amount 533 [1]    
Asset impairment and other charges, per share amount $ 0.00 [1]    
Operations | Other Asset | Publishing
      
Unusual or Infrequent Item [Line Items]      
Asset Impairment And Other Charges Before Tax 9,454 [1] 2,556 10,158
Asset impairment and other charges, after-tax amount 5,754 [1] 1,656 7,261
Asset impairment and other charges, per share amount $ 0.02 [1] $ 0.01 [1] $ 0.03
Operations | Goodwill
      
Unusual or Infrequent Item [Line Items]      
Asset Impairment And Other Charges Before Tax 20,044 [1]    
Asset impairment and other charges, after-tax amount 11,844 [1]    
Asset impairment and other charges, per share amount $ 0.05 [1]    
Operations | Goodwill | Publishing
      
Unusual or Infrequent Item [Line Items]      
Asset Impairment And Other Charges Before Tax 8,430 [1]    
Asset impairment and other charges, after-tax amount 4,930 [1]    
Asset impairment and other charges, per share amount $ 0.02 [1]    
Operations | Goodwill | Digital
      
Unusual or Infrequent Item [Line Items]      
Asset Impairment And Other Charges Before Tax 11,614 [1] 90,053  
Asset impairment and other charges, after-tax amount 6,914 [1] 86,553  
Asset impairment and other charges, per share amount $ 0.03 [1] $ 0.37 [1]  
Operations | Indefinite-lived Intangible Assets, Major Class Name [Domain] | Publishing
      
Unusual or Infrequent Item [Line Items]      
Asset Impairment And Other Charges Before Tax 12,952 [1]    
Asset impairment and other charges, after-tax amount 7,852 [1]    
Asset impairment and other charges, per share amount $ 0.03 [1]    
Non-Operating Charges | Publishing
      
Unusual or Infrequent Item [Line Items]      
Asset Impairment And Other Charges Before Tax 2,774 [1]    
Asset impairment and other charges, after-tax amount 1,774 [1]    
Asset impairment and other charges, per share amount $ 0.01 [1]    
Non-Operating Charges | Digital
      
Unusual or Infrequent Item [Line Items]      
Asset Impairment And Other Charges Before Tax 700 7,000 15,700
Non-Operating Charges | Equity Method Investments
      
Unusual or Infrequent Item [Line Items]      
Asset Impairment And Other Charges Before Tax 731 [1] 7,036 15,739
Asset impairment and other charges, after-tax amount 431 [1] 4,336 9,539
Asset impairment and other charges, per share amount $ 0.00 [1] $ 0.02 [1] $ 0.04
Non-Operating Charges | Cost-method Investments
      
Unusual or Infrequent Item [Line Items]      
Asset Impairment And Other Charges Before Tax     14,529
Asset impairment and other charges, after-tax amount     $ 8,729
Asset impairment and other charges, per share amount     $ 0.04
[1] Total amounts may not sum due to rounding.