Equity Method Investment, Preferred Stock, Liquidation Preference, Value

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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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Maximum potential amount of future payments (undiscounted) the guarantor could be required to make under the guarantee or each group of similar guarantees before reduction for potential recoveries under recourse or collateralization provisions.

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The amount for notes payable (written promise to pay), due to related parties.

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Amount of cash payments made as the result of exit or disposal activities. Excludes payments associated with a discontinued operation or an asset retirement obligation.

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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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Rhapsody Joint Venture (Additional Information) (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2010	Mar. 31, 2019	Dec. 31, 2018	Nov. 30, 2017	Dec. 01, 2016
Rhapsody America LLC
Schedule of Equity Method Investments [Line Items]
Percentage of ownership interest in Rhapsody			42.00%
Payments for restructuring	$ 18.0
Liquidation preference amount		$ 10.0
Loan principal to related party					$ 5.0
Line of Credit [Member]
Schedule of Equity Method Investments [Line Items]
Guarantor Obligations, Maximum Exposure, Undiscounted				$ 2.8