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Facility Consolidation and Asset Impairment Charges - Additional Information (Detail) (USD $)
3 Months Ended9 Months Ended
Sep. 25, 2011
Sep. 26, 2010
Sep. 25, 2011
Sep. 26, 2010
Unusual or Infrequent Item [Line Items]    
Facility consolidation, pre-tax charges $ 23,045,000$ 14,050,000$ 23,045,000
Facility consolidation, after-tax impact  8,000,000 
Facility consolidation, per share  $ 0.03 
Other than temporarily impairment loss on investment, pre-tax2,000,000   
Other than temporarily impairment loss on investment, after-tax1,000,000   
Other asset impairment charges, pre tax 5,000,000  
Maximum
    
Unusual or Infrequent Item [Line Items]    
Other than temporarily impairment loss on investment, per share$ 0.01   
Digital | Impairment of Goodwill
    
Unusual or Infrequent Item [Line Items]    
Asset impairment charge, after tax 11,000,000  
Asset impairment charge, per share $ 0.04  
Digital | Impairment of Intangible Assets
    
Unusual or Infrequent Item [Line Items]    
Asset impairment charge, after tax 1,000,000  
Asset impairment charge, per share $ 0.01  
Asset Impairment and Other Charges
    
Unusual or Infrequent Item [Line Items]    
Asset impairment charge, after tax 3,000,000  
Asset impairment charge, per share $ 0.01  
Publishing | Publishing and Broadcasting
    
Unusual or Infrequent Item [Line Items]    
Facility consolidation, pre-tax charges 2,000,000  
Broadcasting | Publishing and Broadcasting
    
Unusual or Infrequent Item [Line Items]    
Facility consolidation, pre-tax charges 4,000,000  
Publishing and Broadcasting
    
Unusual or Infrequent Item [Line Items]    
Facility consolidation, pre-tax charges 6,000,000  
Digital
    
Unusual or Infrequent Item [Line Items]    
Goodwill impairment charge 11,000,000  
Other intangible assets impairment charges, pre-tax $ 2,000,000