Goodwill and Other Intangible Assets (Details 1) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 29, 2015	Jun. 29, 2014	Jun. 28, 2015
Changes in the Company's net goodwill
Ending balance	$ 4,499,927		$ 4,499,927
Activity during the period:
Ending balance			4,525,618
Publishing
Activity during the period:
Impairment	(5,900)	$ (15,300)
Operating Segments
Changes in the Company's net goodwill
Goodwill before accumulated impairment losses beginning balance	11,729,283		11,729,283
Accumulated impairment losses beginning balance	(7,229,356)		(7,229,356)
Ending balance	4,499,927		4,499,927
Activity during the period:
Acquisitions and adjustments			35,796
Impairment			(5,940)
Foreign currency exchange rate changes			(4,165)
Total			25,691
Goodwill before accumulated impairment losses beginning balance			11,785,269
Accumulated impairment losses ending balance			(7,259,651)
Ending balance			4,525,618
Operating Segments | Broadcasting
Changes in the Company's net goodwill
Goodwill before accumulated impairment losses beginning balance	2,578,601		2,578,601
Accumulated impairment losses beginning balance	0		0
Ending balance	2,578,601		2,578,601
Activity during the period:
Acquisitions and adjustments			817
Impairment			0
Foreign currency exchange rate changes			0
Total			817
Goodwill before accumulated impairment losses beginning balance			2,579,418
Accumulated impairment losses ending balance			0
Ending balance			2,579,418
Operating Segments | Digital
Changes in the Company's net goodwill
Goodwill before accumulated impairment losses beginning balance	1,488,139		1,488,139
Accumulated impairment losses beginning balance	(151,970)		(151,970)
Ending balance	1,336,169		1,336,169
Activity during the period:
Acquisitions and adjustments			2,248
Impairment			0
Foreign currency exchange rate changes			(6,367)
Total			(4,119)
Goodwill before accumulated impairment losses beginning balance			1,484,020
Accumulated impairment losses ending balance			(151,970)
Ending balance			1,332,050
Operating Segments | Publishing
Changes in the Company's net goodwill
Goodwill before accumulated impairment losses beginning balance	7,662,543		7,662,543
Accumulated impairment losses beginning balance	(7,077,386)		(7,077,386)
Ending balance	$ 585,157		585,157
Activity during the period:
Acquisitions and adjustments			32,731
Impairment			(5,940)
Foreign currency exchange rate changes			2,202
Total			28,993
Goodwill before accumulated impairment losses beginning balance			7,721,831
Accumulated impairment losses ending balance			(7,107,681)
Ending balance			$ 614,150