Number of businesses that recorded impairment of intangible and other long-lived assets.

No definition available.

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- Definition

Amount of gain (loss) on sale or disposal of intangible assets.

+ 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 210.5-03.7,9)
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3602-108585

+ Details

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- Definition

Amount of impairment loss resulting from write-down of assets, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit to fair value.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 3
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16373-109275

+ Details

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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Goodwill and Other Intangible Assets Goodwill and Other Intangible Assets (Indefinite-lived Intangible Assets) (Narrative) (Details) $ in Thousands	3 Months Ended	12 Months Ended
	Sep. 30, 2014 USD ($)	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($) business
Indefinite-lived Intangible Assets [Line Items]
Gain on sale of intangible asset		$ 0	$ 0	$ 75,249
Higher Education [Member]
Indefinite-lived Intangible Assets [Line Items]
Impairment of intangible assets				700
Other Businesses [Member]
Indefinite-lived Intangible Assets [Line Items]
Impairment of intangible assets				$ 100
Number of businesses that recorded impairment of intangible and other long-lived assets \| business				1
Discontinued Operations [Member] \| Wireless Licenses [Member] \| Cable [Member]
Indefinite-lived Intangible Assets [Line Items]
Gain on sale of intangible asset	$ 75,200