Business Segment Financial Information (Narrative) (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 28, 2014		Dec. 29, 2013		Dec. 30, 2012
Segment Reporting Information [Line Items]
Asset Impairment And Other Charges Before Tax	$ 115,535		$ 61,745	[1]	$ 129,165
Operating revenues	6,008,174		5,161,362		5,353,197
Broadcasting
Segment Reporting Information [Line Items]
Asset Impairment And Other Charges Before Tax	14,000		1,000
Operating revenues	1,692,304		835,113		906,104
Publishing
Segment Reporting Information [Line Items]
Asset Impairment And Other Charges Before Tax	59,000		46,000		32,000
Operating revenues	3,421,729		3,577,804		3,728,144
Digital
Segment Reporting Information [Line Items]
Asset Impairment And Other Charges Before Tax	24,000		12,000		90,000
Operating revenues	919,270		748,445		718,949
Intersegment Eliminations
Segment Reporting Information [Line Items]
Operating revenues	(25,129)	[2]	0	[2]	0	[2]
Intersegment Eliminations | Publishing
Segment Reporting Information [Line Items]
Operating revenues	5,000
Intersegment Eliminations | Digital
Segment Reporting Information [Line Items]
Operating revenues	$ 20,000

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

[2] Includes intersegment eliminations of $5 million for Publishing and $20 million for Digital.