Income Taxes - Reconciliation Between Luxembourg Statutory Rate and Our Effective Tax Rate (Details)	1 Months Ended	11 Months Ended	12 Months Ended
	Dec. 31, 2018	Nov. 19, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Taxes
Statutory rate	26.00%	26.00%	24.90%	26.00%	27.10%
Effect of tax rates different from the Luxembourg statutory tax rate	(25.30%)	(18.70%)	(22.10%)		(19.20%)
Change in valuation allowance	18.70%	(4.30%)	(1.10%)		(8.00%)
Changes in unrecognized tax benefits	(1.00%)	(0.20%)	(0.20%)		(0.80%)
Equity based compensation shortfall		(0.10%)			(1.20%)
Change in enacted statutory tax rates			(3.90%)		(0.50%)
Adjustments related to prior years	1.30%		0.10%		0.10%
Fresh start accounting		(2.60%)
Effective tax rate	19.70%	0.10%	(2.30%)		(2.50%)