Business Segment Information (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016
Segment Reporting Information [Line Items]
Operating Revenues	$ 778,471	$ 781,732
Operating Income (net of depreciation, amortization, asset impairment and facility consolidation charges)	153,376	203,369
Depreciation, amortization, asset impairment and facility consolidation charges	54,288	50,523
Identifiable assets	8,465,011		$ 8,542,725
Continuing Operations
Segment Reporting Information [Line Items]
Identifiable assets	8,465,011		8,542,725
Operating Segments \| Media
Segment Reporting Information [Line Items]
Operating Revenues	446,310	443,829
Operating Income (net of depreciation, amortization, asset impairment and facility consolidation charges)	139,624	170,358
Depreciation, amortization, asset impairment and facility consolidation charges	20,000	19,441
Operating Segments \| Media \| Continuing Operations
Segment Reporting Information [Line Items]
Identifiable assets	4,760,976		4,786,050
Operating Segments \| Digital
Segment Reporting Information [Line Items]
Operating Revenues	332,161	337,903
Operating Income (net of depreciation, amortization, asset impairment and facility consolidation charges)	28,775	47,219
Depreciation, amortization, asset impairment and facility consolidation charges	34,051	30,361
Operating Segments \| Digital \| Continuing Operations
Segment Reporting Information [Line Items]
Identifiable assets	3,608,032		3,649,347
Corporate
Segment Reporting Information [Line Items]
Operating Income (net of depreciation, amortization, asset impairment and facility consolidation charges)	(15,023)	(14,208)
Depreciation, amortization, asset impairment and facility consolidation charges	237	$ 721
Corporate \| Continuing Operations
Segment Reporting Information [Line Items]
Identifiable assets	$ 96,003		$ 107,328

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- Definition

Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(12))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(11))
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Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1)
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