Discontinued Operation, Equity Method Investment Retained after Disposal, Ownership Interest after Disposal, Diluted

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- Definition

Discontinued Operations, Number Seats Retained on Board of Directors

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Discontinued Operations, Number of Members on Board of Directors

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- Definition

Disposal Group Including Discontinued Operation, Shares of Spin-off Received by Shareholders, Conversion Ratio

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- Definition

Percent, after disposal, of ownership interest of a discontinued operation in which an equity method investment is retained.

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- Definition

Amount of tax expense (benefit) related to a discontinued operation. Includes, but is not limited to, tax expense (benefit) related to income (loss) from operations during the phase-out period, tax expense (benefit) related to gain (loss) on disposal, tax expense (benefit) related to gain (loss) for reversal of write-down (write-down) to fair value, less cost to sell, and tax expense (benefit) related to adjustments of a prior period gain (loss) on disposal.

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- Definition

Amount of consideration received or receivable for the disposal of assets and liabilities, including discontinued operation.

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No definition available.

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- Definition

Amount of share in income (loss) of the equity method investee after the disposal of the discontinued operation.

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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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Discontinued Operations - Narrative (Details) $ in Millions		3 Months Ended	9 Months Ended
Discontinued Operations - Narrative (Details) $ in Millions	Jul. 31, 2017 USD ($) seat	Sep. 30, 2018 USD ($)	Sep. 30, 2018 USD ($)	May 31, 2017
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Conversion ratio for every share of Tegna common stock owned by stockholders				0.3333
Tax benefit from discontinued operations		$ 4.3
CareerBuilder
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from sale of discontinued operation	$ 198.3
CareerBuilder
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Equity method investment retained after disposal, ownership interest (as a percent)	17.00%		17.00%
Equity method investment retained after disposal, fully diluted ownership interest (as a percent)	10.00%		10.00%
Number seats retained on Board of Directors after sale \| seat	2
Total number of seats on Board of Directors \| seat	10
Equity income (loss) in unconsolidated investments, net			$ 15.7