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Asset Impairments and Other Restructuring Items - Narrative (Details) - USD ($) $ in Millions | 1 Months Ended | 3 Months Ended
--- | --- | ---
Mar. 31, 2020 | Mar. 31, 2021
Restructuring and Related Activities [Abstract] |  |
Percentage decline in crude oil prices | 50.00% |
Reduction of payroll tax expense |  | $ 4.8

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- References No definition available. + Details
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