Acquisitions, investments and dispositions Acquired Assets and Liabilities Assumed (Details) (USD $) In Thousands, unless otherwise specified	0 Months Ended
Dec. 23, 2013	Oct. 01, 2014
Belo
Business Acquisition [Line Items]
Cash and cash equivalents	$ 38,107
Receivables and other current assets	163,326
Assets held for sale	431,513
Plant, property and equipment	254,267
Investments and other noncurrent assets	52,902
Goodwill	928,739
Total assets acquired	2,891,317
Current liabilities	87,073
Deferred income taxes	514,450
Other noncurrent liabilities	76,500
Long-term debt	741,708
Total liabilities assumed	1,419,731
Net assets acquired	1,471,586
Cars.com
Business Acquisition [Line Items]
Cash and cash equivalents		43,767
Receivables and other current assets		108,577
Plant, property and equipment		17,399
Indefinite-lived intangible assets		872,320
Investments and other noncurrent assets		14,598
Goodwill		715,970
Total assets acquired		2,634,531
Current liabilities		106,970
Other noncurrent liabilities		132,606
Total liabilities assumed		239,576
Net assets acquired		2,394,955
Less: acquisition date fair value of 26.9% equity interest		563,757
Acquisition purchase price		1,831,198
Customer Relationships \| Cars.com
Business Acquisition [Line Items]
Definite-lived intangible assets:		789,540
Internally Developed Technology \| Cars.com
Business Acquisition [Line Items]
Definite-lived intangible assets:		69,500
Retransmission Agreements \| Belo
Business Acquisition [Line Items]
Definite-lived intangible assets:	99,803
Network Affiliation Agreements \| Belo
Business Acquisition [Line Items]
Definite-lived intangible assets:	33,978
Other \| Belo
Business Acquisition [Line Items]
Definite-lived intangible assets:	52,782
Other \| Cars.com
Business Acquisition [Line Items]
Definite-lived intangible assets:		2,860
FCC Licenses [Member] \| Belo
Business Acquisition [Line Items]
Indefinite-lived intangible assets	$ 835,900

Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets Held-for-Sale1

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Represents the amount of acquisition cost of a business allocated to investments and other noncurrent assets

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Represents the amount of acquisition cost of a business combination allocated to receivables and other current assets

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Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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Amount of assets acquired at the acquisition date.

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Amount of currency on hand as well as demand deposits with banks or financial institutions, acquired at the acquisition date. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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Amount of liabilities due within one year or within the normal operating cycle, if longer, assumed at the acquisition date.

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Amount of deferred tax liability attributable to taxable temporary differences due after one year or the normal operating cycle, if longer, assumed at the acquisition date.

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Amount of assets, excluding financial assets and goodwill, that lack physical substance, having a projected indefinite period of benefit, acquired at the acquisition date.

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The amount of identifiable intangible assets recognized as of the acquisition date.

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Amount of liabilities assumed at the acquisition date.

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Amount of long-term debt due after one year or the normal operating cycle, if longer, assumed at the acquisition date.

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Amount of other liabilities due after one year or the normal operating cycle, if longer, assumed at the acquisition date.

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The amount of property, plant, and equipment recognized as of the acquisition date.

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Amount recognized for assets, including goodwill, in excess of (less than) the aggregate liabilities assumed.

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Fair value at acquisition-date of the equity interest in the acquiree held by the acquirer, immediately before the acquisition date for businesses combined in stages.

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Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.

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