Summary of Facility Consolidation and Asset Impairment Charges (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 28, 2014	Dec. 29, 2013		Dec. 30, 2012
Unusual or Infrequent Item [Line Items]
Asset Impairment And Other Charges Before Tax	$ 115,535	$ 61,745	[1]	$ 129,165
Asset impairment and other charges, after-tax amount	83,135	37,045	[1]	110,465
Asset impairment and other charges, per share amount	$ 0.36	$ 0.16	[1]	$ 0.47	[1]
Digital
Unusual or Infrequent Item [Line Items]
Asset Impairment And Other Charges Before Tax	24,000	12,000		90,000
Publishing
Unusual or Infrequent Item [Line Items]
Asset Impairment And Other Charges Before Tax	59,000	46,000		32,000
Broadcasting
Unusual or Infrequent Item [Line Items]
Asset Impairment And Other Charges Before Tax	14,000	1,000
Operations
Unusual or Infrequent Item [Line Items]
Asset Impairment And Other Charges Before Tax	96,364	58,240	[1]	122,129
Asset impairment and other charges, after-tax amount	74,464	34,840	[1]	106,129
Asset impairment and other charges, per share amount	$ 0.32	$ 0.15	[1]	$ 0.45	[1]
Operations | Goodwill
Unusual or Infrequent Item [Line Items]
Asset Impairment And Other Charges Before Tax	45,581	20,044	[1]
Asset impairment and other charges, after-tax amount	42,581	11,844	[1]
Asset impairment and other charges, per share amount	$ 0.18	$ 0.05	[1]
Operations | Goodwill | Digital
Unusual or Infrequent Item [Line Items]
Asset Impairment And Other Charges Before Tax	23,700	11,614	[1]	90,053
Asset impairment and other charges, after-tax amount	23,700	6,914	[1]	86,553
Asset impairment and other charges, per share amount	$ 0.10	$ 0.03	[1]	$ 0.37	[1]
Operations | Goodwill | Publishing
Unusual or Infrequent Item [Line Items]
Asset Impairment And Other Charges Before Tax	21,881	8,430	[1]
Asset impairment and other charges, after-tax amount	18,881	4,930	[1]
Asset impairment and other charges, per share amount	$ 0.08	$ 0.02	[1]
Operations | Property Plant and Equipment | Publishing
Unusual or Infrequent Item [Line Items]
Asset Impairment And Other Charges Before Tax	19,467	14,756	[1]	29,520
Asset impairment and other charges, after-tax amount	13,467	8,856	[1]	17,920
Asset impairment and other charges, per share amount	$ 0.06	$ 0.04	[1]	$ 0.08	[1]
Operations | Mastheads and trade names | Publishing
Unusual or Infrequent Item [Line Items]
Asset Impairment And Other Charges Before Tax	3,548	12,952	[1]
Asset impairment and other charges, after-tax amount	2,148	7,852	[1]
Asset impairment and other charges, per share amount	$ 0.01	$ 0.03	[1]
Operations | Other Asset
Unusual or Infrequent Item [Line Items]
Asset Impairment And Other Charges Before Tax	27,768	10,487	[1]
Asset impairment and other charges, after-tax amount	16,268	6,287	[1]
Asset impairment and other charges, per share amount	$ 0.07	$ 0.03	[1]
Operations | Other Asset | Publishing
Unusual or Infrequent Item [Line Items]
Asset Impairment And Other Charges Before Tax	14,048	9,454	[1]	2,556
Asset impairment and other charges, after-tax amount	8,049	5,754	[1]	1,656
Asset impairment and other charges, per share amount	$ 0.03	$ 0.02	[1]	$ 0.01	[1]
Operations | Other Asset | Broadcasting
Unusual or Infrequent Item [Line Items]
Asset Impairment And Other Charges Before Tax	13,720	1,033	[1]
Asset impairment and other charges, after-tax amount	8,219	533	[1]
Asset impairment and other charges, per share amount	$ 0.04	$ 0.00	[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 | Other-Broadcasting
Unusual or Infrequent Item [Line Items]
Asset Impairment And Other Charges Before Tax	16,108
Asset impairment and other charges, after-tax amount	6,508
Asset impairment and other charges, per share amount	$ 0.03
Non-Operating Charges | Equity Method Investments
Unusual or Infrequent Item [Line Items]
Asset Impairment And Other Charges Before Tax	3,063	731	[1]	7,036
Asset impairment and other charges, after-tax amount	$ 2,163	$ 431	[1]	$ 4,336
Asset impairment and other charges, per share amount	$ 0.01	$ 0.00	[1]	$ 0.02	[1]

[1] Total amounts may not sum due to rounding.