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Summary of Significant Accounting Policies - Other Expense (Income), Net (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Jun. 30, 2017	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Foreign currency transaction losses (gains), net		$ 24,852	$ (15,567)	$ 43,248
Debt extinguishment expense, net		0	0	78,368
Other, net		9,046	3,875	(42,187)
Other Expense (Income), Net		33,898	(11,692)	79,429
Gain on divestiture		$ 0	$ 0	38,869
Disposal Group, Not Discontinued Operations | Russia and Ukraine Divestment
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gain on divestiture	$ 38,869			$ 38,869

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