Pension and Other Postretirement Benefits (Details) (USD $)		3 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended			3 Months Ended			6 Months Ended
	Dec. 30, 2012	Jun. 30, 2013 Pension Plans, Defined Benefit [Member]	Jun. 24, 2012 Pension Plans, Defined Benefit [Member]	Jun. 30, 2013 Pension Plans, Defined Benefit [Member]	Jun. 24, 2012 Pension Plans, Defined Benefit [Member]	Jun. 30, 2013 Qualified Plans [Member]	Jun. 24, 2012 Qualified Plans [Member]	Jun. 30, 2013 Qualified Plans [Member]	Jun. 24, 2012 Qualified Plans [Member]	Jun. 30, 2013 Non-Qualified Plans [Member]	Jun. 24, 2012 Non-Qualified Plans [Member]	Jun. 30, 2013 Non-Qualified Plans [Member]	Jun. 24, 2012 Non-Qualified Plans [Member]	Jun. 30, 2013 Contributions to The New York Times Newspaper Guild Pension Plan[Member]	Jun. 30, 2013 Other Postretirement Benefit Plans, Defined Benefit [Member]	Jun. 24, 2012 Other Postretirement Benefit Plans, Defined Benefit [Member]	Mar. 25, 2012 Other Postretirement Benefit Plans, Defined Benefit [Member]	Jun. 30, 2013 Other Postretirement Benefit Plans, Defined Benefit [Member]	Jun. 24, 2012 Other Postretirement Benefit Plans, Defined Benefit [Member]
Net periodic benefit cost/(income)
Service cost		$ 2,579,000	$ 3,271,000	$ 5,157,000	$ 6,655,000	$ 2,323,000	$ 2,894,000	$ 4,645,000	$ 5,901,000	$ 256,000	$ 377,000	$ 512,000	$ 754,000		$ 285,000	$ 239,000		$ 570,000	$ 478,000
Interest cost		21,927,000	26,714,000	43,854,000	53,485,000	19,284,000	23,592,000	38,568,000	47,241,000	2,643,000	3,122,000	5,286,000	6,244,000		1,009,000	1,246,000		2,018,000	2,492,000
Expected return on plan assets		(31,063,000)	(29,614,000)	(62,125,000)	(59,191,000)	(31,063,000)	(29,614,000)	(62,125,000)	(59,191,000)	0	0	0	0
Amortization of prior service (credit)/cost		(486,000)	201,000	(972,000)	402,000	(486,000)	201,000	(972,000)	402,000	0	0	0	0		(3,693,000)	(3,778,000)		(7,385,000)	(7,556,000)
Recognized actuarial loss		9,754,000	8,351,000	19,507,000	16,697,000	8,442,000	7,229,000	16,884,000	14,452,000	1,312,000	1,122,000	2,623,000	2,245,000		1,022,000	832,000		2,044,000	1,664,000
Curtailment gain															0	0	(27,200,000)	0	(27,213,000)
Net periodic benefit cost/(income)		2,711,000	8,923,000	5,421,000	18,048,000	(1,500,000)	4,302,000	(3,000,000)	8,805,000	4,211,000	4,621,000	8,421,000	9,243,000		(1,377,000)	(1,461,000)		(2,753,000)	(30,135,000)
Contributions to certain qualified pension plans								68,000,000						65,000,000
Minimum funding requirements														28,000,000
Estimated future contributions to pension plans based on contractual obligations for the remaining fiscal year	$ 75,000,000