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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.

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