Assets Held for Sale, Number of Properties Held for Sale

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Assets Held for Sale, Number of Properties Sold

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Gain (Loss) on Sale of Properties, Deferred

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Proceeds from Federal Communications Commission spectrum auction

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- Definition

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

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
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-Publisher FASB
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The difference between the carrying value and the sale price of real estate or properties that were intended to be sold or held for capital appreciation or rental income. This element refers to the gain (loss) included in earnings and not to the cash proceeds of the sale. This element is a noncash adjustment to net income when calculating net cash generated by operating activities using the indirect method.

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The aggregate amount of write-downs for impairments recognized during the period for long-lived assets held for abandonment, exchange or sale.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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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.

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Cash received for the sale of real estate that is not part of an investing activity during the current period.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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A description of the terms of the lease(s) related to the assets being leased-back in connection with the transaction involving the sale of property to another party and the lease of the property back to the seller.

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Assets Held For Sale and Sales of Real Estate Narrative (Details) $ in Thousands										3 Months Ended				9 Months Ended
	Jan. 31, 2017 USD ($)	Jan. 26, 2017 USD ($)	Sep. 27, 2016 USD ($)	Sep. 26, 2016 USD ($)	Jul. 14, 2016 USD ($)	Jul. 12, 2016 USD ($) property	Jul. 07, 2016 USD ($)	Jun. 02, 2016 USD ($)	May 02, 2016 USD ($)	Mar. 31, 2018 USD ($)	Sep. 30, 2017 USD ($) property	Jun. 30, 2017 USD ($) property	Sep. 30, 2016 USD ($)	Sep. 30, 2017 USD ($) property	Sep. 30, 2016 USD ($)
Long Lived Assets Held-for-sale [Line Items]
Number of real estate properties held for sale (property) \| property											2			2
Impairment of Long-Lived Assets to be Disposed of													$ 1,000	$ 1,000	$ 15,000
Proceeds from sale of real estate														61,000	505,000
(Gain) loss on sales of real estate, net											$ (65)		$ (213,168)	(365)	(212,719)
Proceeds from FCC spectrum auction														$ 172,102	$ 0
FCC Licenses \| Subsequent Event
Long Lived Assets Held-for-sale [Line Items]
(Gain) Loss on Disposition of Intangible Assets										$ (133,000)
Denver, CO Property
Long Lived Assets Held-for-sale [Line Items]
Proceeds from sale of real estate		$ 23,000
Chicago, IL Property
Long Lived Assets Held-for-sale [Line Items]
Proceeds from sale of real estate	$ 22,000											$ 1,000
Sale Leaseback Transaction, Lease Terms	P10Y
(Gain) loss on sales of real estate, deferred	$ (13,000)
Assets Held for Sale, Number of Properties Sold \| property												2
Baltimore, MD Property
Long Lived Assets Held-for-sale [Line Items]
Proceeds from sale of real estate												$ 15,000
Assets Held for Sale, Number of Properties Sold \| property												2
Williamsburg, VA Property
Long Lived Assets Held-for-sale [Line Items]
Proceeds from sale of real estate											$ 1,000
Deerfield Beach Property
Long Lived Assets Held-for-sale [Line Items]
Proceeds from sale of real estate									$ 24,000
(Gain) loss on sales of real estate, net									$ 400
Allentown Property
Long Lived Assets Held-for-sale [Line Items]
Proceeds from sale of real estate								$ 8,000
(Gain) loss on sales of real estate, net								$ 49
Seattle Property [Member]
Long Lived Assets Held-for-sale [Line Items]
Proceeds from sale of real estate							$ 19,000
(Gain) loss on sales of real estate, deferred							$ (8,000)
Orlando Sentinel Property
Long Lived Assets Held-for-sale [Line Items]
Proceeds from sale of real estate						$ 34,000
(Gain) loss on sales of real estate, net						$ (2,000)
Assets Held for Sale, Number of Properties Sold \| property						2
Arlington Heights Property
Long Lived Assets Held-for-sale [Line Items]
Proceeds from sale of real estate					$ 400
Tribune Tower
Long Lived Assets Held-for-sale [Line Items]
Proceeds from sale of real estate				$ 200,000
(Gain) loss on sales of real estate, net				(93,000)
Tribune Tower \| Contingent Payment
Long Lived Assets Held-for-sale [Line Items]
Proceeds from sale of real estate				35,000
LA Times Property
Long Lived Assets Held-for-sale [Line Items]
Proceeds from sale of real estate				102,000
(Gain) loss on sales of real estate, net				(59,000)
LA Times Property \| Contingent Payment
Long Lived Assets Held-for-sale [Line Items]
Proceeds from sale of real estate				$ 10,000
Olympic Property
Long Lived Assets Held-for-sale [Line Items]
Proceeds from sale of real estate			$ 119,000
(Gain) loss on sales of real estate, net			$ (59,000)