Investments TV Food Network (Details) - Television Food Network, G.P. - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2019	Mar. 31, 2018
Schedule of Equity Method Investments [Line Items]
Revenues, net	$ 319,715	$ 307,945
Operating income	178,032	162,756
Net income	$ 187,450	$ 165,589

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

No definition available.

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- Definition

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.

+ References

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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.

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