Debt - Interest Rates (Details)	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
New Ultraco Debt Facility
Debt Instrument [Line Items]
Commitment fee percentage	40.00%	40.00%	40.00%	40.00%
Norwegian Bond Debt Facility
Debt Instrument [Line Items]
Interest rate		8.25%		8.25%
Super Senior Facility
Debt Instrument [Line Items]
Commitment fee percentage		40.00%		40.00%
Super Senior Facility | Senior Subordinated Notes
Debt Instrument [Line Items]
Interest rate		2.58%		2.58%
Holdco Revolving Credit Facility
Debt Instrument [Line Items]
Interest rate		5.05%		5.05%
Commitment fee percentage		40.00%		40.00%
Minimum | Convertible Bond Debt
Debt Instrument [Line Items]
Interest rate	5.00%	5.00%	5.00%	5.00%
Minimum | New Ultraco Debt Facility
Debt Instrument [Line Items]
Interest rate	2.98%	2.60%	2.35%	2.60%
Minimum | Super Senior Facility | Senior Subordinated Notes
Debt Instrument [Line Items]
Interest rate		2.24%		2.24%
Minimum | Holdco Revolving Credit Facility
Debt Instrument [Line Items]
Interest rate		2.60%		2.60%
Weighted Average | Convertible Bond Debt
Debt Instrument [Line Items]
Interest rate	5.30%	10.14%	5.39%	10.14%
Weighted Average | New Ultraco Debt Facility
Debt Instrument [Line Items]
Interest rate		3.25%		3.23%
Weighted Average | New Ultraco Debt Facility | Senior Subordinated Notes
Debt Instrument [Line Items]
Interest rate	3.74%		3.39%
Weighted Average | Norwegian Bond Debt Facility
Debt Instrument [Line Items]
Interest rate		9.13%		9.00%
Maximum | New Ultraco Debt Facility
Debt Instrument [Line Items]
Interest rate	3.93%	2.72%	3.93%	2.72%