Investments TV Food Network (Details) - Television Food Network, G.P. - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Schedule of Equity Method Investments [Line Items]
Revenues, net	$ 336,200	$ 322,154	$ 655,915	$ 630,099
Operating income	190,888	171,788	368,920	334,544
Net income	$ 190,604	$ 176,289	$ 378,054	$ 341,878

Equity Method Investment Summarized Financial Information Income Loss From Continuing Operations, Before Income Taxes and Extraordinary Items

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The amount of net income (loss) reported by an equity method investment of the entity.

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- Definition

The amount of revenue from sale of goods and services reduced by sales returns, allowances, and discounts reported by an equity method investment of the entity.

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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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