Fair Value Measurements - Assets and Liabilities Measured at Fair Value on a Non-Recurring Basis (Details) - USD ($) |
3 Months Ended | 12 Months Ended | ||
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Mar. 31, 2020 |
Dec. 31, 2020 |
Dec. 31, 2019 |
Dec. 31, 2018 |
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| Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items] | ||||
| Total Gain (loss) on long-lived assets held and used | $ (2,017,000) | $ (20,768,000) | $ (27,414,000) | |
| Total Gain (loss) on goodwill | $ (268,000,000.0) | $ (268,000,000.0) | ||
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- Definition Line items related to fair value of assets and liabilities that are measured on a non-recurring basis. No definition available.
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- Definition Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition The charge against earnings resulting from the aggregate write down of tangible assets from their carrying value to their fair value. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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