Business Segments (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 29, 2014	Jun. 30, 2015	Jun. 29, 2014	Dec. 28, 2014
Segment Reporting Information [Line Items]
Operating revenues	$ 501,524	$ 474,979	$ 974,261	$ 921,081
Operating profit (loss)	19,784	32,193	80,719	82,453
Depreciation	17,966	17,540	35,020	34,251
Amortization	48,437	61,018	96,208	121,692
Capital expenditures	22,418	21,996	38,717	39,597
Total Assets	10,247,416		10,247,416		$ 11,396,455
Assets held for sale	518		518		5,645
Operating Segments | Television and Entertainment
Segment Reporting Information [Line Items]
Operating revenues	445,622	426,961	855,922	827,162
Operating profit (loss)	47,088	52,414	126,436	117,111
Depreciation	12,023	13,136	23,446	25,512
Amortization	41,475	56,172	82,985	112,827
Total Assets	8,036,616		8,036,616		8,234,456
Operating Segments | Digital and Data
Segment Reporting Information [Line Items]
Operating revenues	43,625	33,807	93,827	65,292
Operating profit (loss)	(4,150)	(8,910)	(416)	(10,996)
Depreciation	2,321	1,909	4,426	3,722
Amortization	6,962	4,846	13,223	8,865
Total Assets	708,478		708,478		644,985
Corporate and Other
Segment Reporting Information [Line Items]
Operating revenues	12,277	14,211	24,512	28,627
Operating profit (loss)	(23,154)	(11,311)	(45,301)	(23,662)
Depreciation	3,622	2,495	7,148	5,017
Total Assets	1,501,804		1,501,804		$ 2,511,369
Continuing operations | Operating Segments | Television and Entertainment
Segment Reporting Information [Line Items]
Capital expenditures	5,026	6,363	14,276	9,392
Continuing operations | Operating Segments | Digital and Data
Segment Reporting Information [Line Items]
Capital expenditures	7,917	3,474	10,522	5,395
Continuing operations | Corporate and Other
Segment Reporting Information [Line Items]
Capital expenditures	9,475	10,512	13,919	21,819
Discontinued operations
Segment Reporting Information [Line Items]
Capital expenditures	$ 0	$ 1,647	$ 0	$ 2,991