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Summary of Significant Accounting Policies Summary of Significant Accounting Policies - Other Expense (Income), Net - Foreign Currency Transactions (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Jan. 08, 2020
Accounting Policies [Abstract]
Foreign currency transaction losses (gains), net	$ 1,471	$ (19,331)	$ (35,928)	$ (1,634)
Debt extinguishment expense	17,040	0	17,040	0
Other, net	7,189	4,139	1,862	1,652
Other Expense (Income), Net	$ 25,700	$ (15,192)	$ (17,026)	$ 18
OSG Investment
Schedule of Equity Method Investments [Line Items]
Ownership percentage	25.00%		25.00%		25.00%

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