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.