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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. 30, 2012 | Dec. 25, 2011 | Dec. 26, 2010
Unusual or Infrequent Item [Line Items] |  |  |  |  |
Asset impairment and other charges, pre-tax amount | $ 129,165 |  | $ 57,511 | $ 59,740 |
Asset impairment and other charges, after-tax amount | 110,465 |  | 35,811 | 42,688 |
Asset impairment and other charges, per share amount | $ 0.47 | [1] | $ 0.15 | $ 0.18 | [2]
Publishing |  |  |  |  |
Unusual or Infrequent Item [Line Items] |  |  |  |  |
Asset impairment and other charges, pre-tax amount | 32,000 |  | 27,000 | 36,000 |
Digital |  |  |  |  |
Unusual or Infrequent Item [Line Items] |  |  |  |  |
Asset impairment and other charges, pre-tax amount | 90,000 |  |  | 13,000 |
Broadcasting |  |  |  |  |
Unusual or Infrequent Item [Line Items] |  |  |  |  |
Asset impairment and other charges, pre-tax amount |  |  |  | 9,000 |
Operations |  |  |  |  |
Unusual or Infrequent Item [Line Items] |  |  |  |  |
Asset impairment and other charges, pre-tax amount | 122,129 |  | 27,243 | 57,009 |
Asset impairment and other charges, after-tax amount | 106,129 |  | 17,543 | 41,054 |
Asset impairment and other charges, per share amount | $ 0.45 | [1] | $ 0.07 | $ 0.17 | [2]
Operations | Property Plant and Equipment |  |  |  |  |
Unusual or Infrequent Item [Line Items] |  |  |  |  |
Asset impairment and other charges, pre-tax amount |  |  |  | 19,253 |
Asset impairment and other charges, after-tax amount |  |  |  | 11,793 |
Asset impairment and other charges, per share amount |  |  |  | $ 0.05 | [2]
Operations | Property Plant and Equipment | Publishing |  |  |  |  |
Unusual or Infrequent Item [Line Items] |  |  |  |  |
Asset impairment and other charges, pre-tax amount | 29,520 |  | 17,085 | 15,489 |
Asset impairment and other charges, after-tax amount | 17,920 |  | 10,282 | 9,472 |
Asset impairment and other charges, per share amount | $ 0.08 | [1] | $ 0.04 | $ 0.04 | [2]
Operations | Property Plant and Equipment | Broadcasting |  |  |  |  |
Unusual or Infrequent Item [Line Items] |  |  |  |  |
Asset impairment and other charges, pre-tax amount |  |  |  | 3,764 |
Asset impairment and other charges, after-tax amount |  |  |  | 2,321 |
Asset impairment and other charges, per share amount |  |  |  | $ 0.01 | [2]
Operations | Other Asset |  |  |  |  |
Unusual or Infrequent Item [Line Items] |  |  |  |  |
Asset impairment and other charges, pre-tax amount |  |  |  | 8,291 |
Asset impairment and other charges, after-tax amount |  |  |  | 5,086 |
Asset impairment and other charges, per share amount |  |  |  | $ 0.02 | [2]
Operations | Other Asset | Publishing |  |  |  |  |
Unusual or Infrequent Item [Line Items] |  |  |  |  |
Asset impairment and other charges, pre-tax amount | 2,556 |  | 10,158 | 3,301 |
Asset impairment and other charges, after-tax amount | 1,656 |  | 7,261 | 2,025 |
Asset impairment and other charges, per share amount | $ 0.01 | [1] | $ 0.03 | $ 0.01 | [2]
Operations | Other Asset | Broadcasting |  |  |  |  |
Unusual or Infrequent Item [Line Items] |  |  |  |  |
Asset impairment and other charges, pre-tax amount |  |  |  | 4,990 |
Asset impairment and other charges, after-tax amount |  |  |  | 3,061 |
Asset impairment and other charges, per share amount |  |  |  | $ 0.01 | [2]
Operations | Goodwill | Digital |  |  |  |  |
Unusual or Infrequent Item [Line Items] |  |  |  |  |
Asset impairment and other charges, pre-tax amount | 90,053 |  |  | 10,932 |
Asset impairment and other charges, after-tax amount | 86,553 |  |  | 10,810 |
Asset impairment and other charges, per share amount | $ 0.37 | [1] |  | $ 0.04 | [2]
Operations | Other Intangible Assets |  |  |  |  |
Unusual or Infrequent Item [Line Items] |  |  |  |  |
Asset impairment and other charges, pre-tax amount |  |  |  | 18,533 |
Asset impairment and other charges, after-tax amount |  |  |  | 13,365 |
Asset impairment and other charges, per share amount |  |  |  | $ 0.06 | [2]
Operations | Other Intangible Assets | Publishing |  |  |  |  |
Unusual or Infrequent Item [Line Items] |  |  |  |  |
Asset impairment and other charges, pre-tax amount |  |  |  | 16,930 |
Asset impairment and other charges, after-tax amount |  |  |  | 12,359 |
Asset impairment and other charges, per share amount |  |  |  | $ 0.05 | [2]
Operations | Other Intangible Assets | Digital |  |  |  |  |
Unusual or Infrequent Item [Line Items] |  |  |  |  |
Asset impairment and other charges, pre-tax amount |  |  |  | 1,603 |
Asset impairment and other charges, after-tax amount |  |  |  | 1,006 |
Asset impairment and other charges, per share amount |  |  |  | $ 0 | [2]
Non-Operating Charges | Equity Method Investments |  |  |  |  |
Unusual or Infrequent Item [Line Items] |  |  |  |  |
Asset impairment and other charges, pre-tax amount | 7,036 |  | 15,739 | 2,731 |
Asset impairment and other charges, after-tax amount | 4,336 |  | 9,539 | 1,634 |
Asset impairment and other charges, per share amount | $ 0.02 | [1] | $ 0.04 | $ 0.01 | [2]
Non-Operating Charges | Cost-method Investments |  |  |  |  |
Unusual or Infrequent Item [Line Items] |  |  |  |  |
Asset impairment and other charges, pre-tax amount |  |  | 14,529 |  |
Asset impairment and other charges, after-tax amount |  |  | 8,729 |  |
Asset impairment and other charges, per share amount |  |  | $ 0.04 |  |
Non-Operating Charges | Digital |  |  |  |  |
Unusual or Infrequent Item [Line Items] |  |  |  |  |
Asset impairment and other charges, pre-tax amount | $ 7,000 |  | $ 16,000 | $ 3,000 |
[1] | Total amounts may not sum due to rounding
[2] | Total amounts may not sum due to rounding.

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