Quarterly Information (Unaudited) (Narrative) (Details) (USD $)	3 Months Ended												12 Months Ended				3 Months Ended	12 Months Ended	1 Months Ended			3 Months Ended			1 Months Ended	3 Months Ended	12 Months Ended
	Dec. 29, 2013	Sep. 29, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 30, 2012		Sep. 23, 2012		Jun. 24, 2012		Mar. 25, 2012		Dec. 29, 2013	Dec. 30, 2012		Dec. 25, 2011	Dec. 30, 2012 Other Expense [Member]	Dec. 30, 2012 Other Expense [Member]	May 31, 2012 Cost-method Investments [Member] Unit	Feb. 29, 2012 Cost-method Investments [Member] Unit	Jul. 31, 2011 Cost-method Investments [Member] Unit	Sep. 23, 2012 Cost-method Investments [Member]	Jun. 30, 2013 Cost-method Investments [Member] Fenway Sports Group [Member]	Mar. 25, 2012 Cost-method Investments [Member] Fenway Sports Group [Member]	Oct. 31, 2012 Cost-method Investments [Member] Indeed.com [Member]	Mar. 25, 2012 Cost-method Investments [Member] Indeed.com [Member]	Dec. 30, 2012 Cost-method Investments [Member] Indeed.com [Member]
Schedule of Investments [Line Items]
Pension settlement expense	$ 3,228,000			$ 0	$ 47,657,000	[1]	$ 0	[1]	$ 0	[1]	$ 0	[1]	$ 3,228,000	$ 47,657,000	[1]	$ 0
Multiemployer pension plan withdrawal expense	0	6,171,000	0	0	0		0		0		0		6,171,000	0		4,228,000
Gain (loss) on sale of investments																									164,600,000		164,600,000
Other expense, legal settlement																	2,600,000	2,600,000
Gain on sale of investments				0	164,630,000	[2]	0	[2]	37,797,000	[2]	17,848,000	[2]	0	220,275,000	[2]	71,171,000						65,273,000	37,800,000	17,800,000		5,900,000
Units sold in Fenway Sports Group																			210	100	390
Impairment of investments				$ 0	$ 0	[3]	$ 600,000	[3]	$ 0	[3]	$ 4,900,000	[3]	$ 0	$ 5,500,000	[3]	$ 0

[1] In the fourth quarter of 2012, we recorded a $47.7 million non-cash pension settlement charge in connection with the immediate pension benefit offer to certain former employees who participate in The New York Times Companies Pension Plan.

[2] In the first quarter of 2012, we recorded a $17.8 million gain on the sale of 100 of our units in Fenway Sports Group. In the second quarter of 2012, we recorded a $37.8 million gain on the sale of our remaining 210 units in Fenway Sports Group. In the fourth quarter of 2012, we recorded a $164.6 million gain on the sale of our ownership interest in Indeed.com.

[3] In the first and third quarters of 2012, we recorded a $4.9 million and $0.6 million non-cash charge, respectively, for the impairment of certain investments.