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Investments - Additional Information (Detail) (USD $) | 12 Months Ended
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Dec. 29, 2013 | Dec. 30, 2012 | Dec. 25, 2011
Schedule of Equity Method Investments [Line Items] |  |  |  |
Aggregate carrying value of equity investments | $ 164,900,000 |  |  |
Asset Impairment And Other Charges Before Tax | 61,745,000 | [1] | 129,165,000 | 57,511,000
Advertising revenues | 2,198,719,000 |  | 2,355,922,000 | 2,511,025,000
Digital |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |
Asset Impairment And Other Charges Before Tax | 12,000,000 |  | 90,000,000 |
Publishing |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |
Asset Impairment And Other Charges Before Tax | 46,000,000 |  | 32,000,000 | 27,000,000
Advertising revenues | 98,300,000 |  | 90,200,000 | 82,700,000
Non-Operating Charges | Digital |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |
Asset Impairment And Other Charges Before Tax | 700,000 |  | 7,000,000 | 15,700,000
Non-Operating Charges | Publishing |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |
Asset Impairment And Other Charges Before Tax | $ 2,774,000 | [1] |  |
Investment Classified Ventures [Member] |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |
Equity Method Investment, Ownership Percentage | 26.90% |  | 23.60% |
[1] | Total amounts may not sum due to rounding.

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- Definition Revenue from the sale of advertising time (such as television and radio) or space (newspaper or magazine pages). May also include advertising, marketing and promotional services rendered during the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 + Details
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- Definition The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=6382943&loc=d3e33918-111571 + Details
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- Definition This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.12) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=16385135&loc=d3e33749-111570 + Details
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