Assets Held for Sale, Number of Properties Sold

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Gain (Loss) on Sale of Properties, Deferred

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Gain (Loss) on Sale of Properties, portion attributable to noncontrolling interest

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Proceeds from Federal Communications Commission spectrum auction

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Sale of Real Estate, Contingency Period

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- Definition

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

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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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Amount of cash inflow (outflow) from (to) a noncontrolling interest. Excludes dividends paid to the noncontrolling interest.

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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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- Definition

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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Real Estate Sales and Assets Held For Sale Narrative (Details) $ in Thousands																			3 Months Ended			12 Months Ended
	Oct. 23, 2018 USD ($)	Oct. 09, 2018 USD ($)	Dec. 19, 2017 USD ($)	Nov. 15, 2017 USD ($)	Aug. 04, 2017 USD ($)	May 22, 2017 USD ($) property	Apr. 21, 2017 USD ($) property	Jan. 31, 2017 USD ($) property	Jan. 26, 2017 USD ($)	Dec. 22, 2016 USD ($)	Nov. 14, 2016 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 ($)	Dec. 31, 2016 USD ($)	Jun. 30, 2016 USD ($)	Dec. 31, 2018 USD ($) property	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)
Assets Held for Sale, Number of Properties Sold \| property																						2
Proceeds from sales of real estate and other assets																						$ 59,000	$ 144,000	$ 506,000
Gain (Loss) on Sale of Properties																				$ 1,000	$ (1,000)	24,657	28,533	213,086
Contributions from (distributions to) noncontrolling interests, net																						475	(9,251)	393
Impairment of Long-Lived Assets to be Disposed of																							2,000	15,000
Proceeds from FCC spectrum auction																						$ 0	$ 172,102	$ 0
FCC licenses
Gain (Loss) on Disposition of Intangible Assets																			$ 133,000
Melville, NY
Proceeds from sales of real estate and other assets		$ 53,000
Gain (Loss) on Sale of Properties		$ 24,000
Hartford, CT
Proceeds from sales of real estate and other assets	$ 6,000
Gain (Loss) on Sale of Properties	$ 1,000
Denver, CO Property
Proceeds from sales of real estate and other assets									$ 23,000
Chicago, IL Property
Assets Held for Sale, Number of Properties Sold \| property							2	1
Proceeds from sales of real estate and other assets							$ 1,000	$ 22,000			$ 1,000
Sale Leaseback Transaction, Lease Terms								10
Gain (Loss) on Sale of Properties, Deferred								$ 13,000
Baltimore, MD Property
Assets Held for Sale, Number of Properties Sold \| property						2
Proceeds from sales of real estate and other assets						$ 15,000				$ 300
Williamsburg, VA Property
Proceeds from sales of real estate and other assets					$ 1,000
Costa Mesa, CA Property
Proceeds from sales of real estate and other assets				$ 62,000
Gain (Loss) on Sale of Properties				22,000
Gain (Loss) on Sale of Properties, portion attributable to noncontrolling interest				$ 3,000
Fort Lauderdale, FL Property
Proceeds from sales of real estate and other assets			$ 21,000
Gain (Loss) on Sale of Properties			6,000
Gain (Loss) on Sale of Properties, portion attributable to noncontrolling interest			$ 100
Deerfield Beach Property
Proceeds from sales of real estate and other assets																		$ 24,000
Allentown Property
Proceeds from sales of real estate and other assets																	$ 8,000
Seattle Property
Proceeds from sales of real estate and other assets																$ 19,000
Sale Leaseback Transaction, Lease Terms																11
Gain (Loss) on Sale of Properties, Deferred																$ 8,000
Orlando Sentinel Property
Assets Held for Sale, Number of Properties Sold \| property															2
Proceeds from sales of real estate and other assets															$ 34,000
Gain (Loss) on Sale of Properties															$ 2,000
Arlington Heights Property
Proceeds from sales of real estate and other assets														$ 400
Tribune Tower
Proceeds from sales of real estate and other assets													$ 199,000
Gain (Loss) on Sale of Properties													$ 93,000
Sale of Real Estate, Contingency Period													5 years
Tribune Tower \| Contingent Payment
Proceeds from sales of real estate and other assets													$ 35,000
LA Times Property
Proceeds from sales of real estate and other assets													102,000
Gain (Loss) on Sale of Properties													$ 59,000
Sale of Real Estate, Contingency Period													5 years
LA Times Property \| Contingent Payment
Proceeds from sales of real estate and other assets													$ 10,000
Olympic Property
Proceeds from sales of real estate and other assets												$ 118,000
Gain (Loss) on Sale of Properties												$ 59,000