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Summary of Significant Accounting Policies - Other Expense (Income), Net / Income Taxes (Details) - USD ($) $ in Thousands | 3 Months Ended
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Mar. 31, 2021 | Mar. 31, 2020
Accounting Policies [Abstract] |  |
Foreign currency transaction losses (gains), net | $ 2,314 | $ (37,399)
Other, net | 2,399 | (5,327)
Other Expense (Income), Net | $ 4,713 | $ (42,726)
Effective Tax Rate | 23.90% | 13.00%
OSG Investment |  |
Schedule of Equity Method Investments [Line Items] |  |
Ownership percentage | 25.00% |

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