Fresh Start Accounting - Fair Value of Property and Equipment (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018	Nov. 20, 2018	Nov. 19, 2018
Fresh-Start Adjustment [Line Items]
Total Property and equipment	$ 1,962,470	$ 1,927,455	$ 1,920,474	$ 5,949,624
Accumulated depreciation	(119,921)	(12,283)		(1,526,915)
Property and equipment, net	1,842,549	1,915,172	1,920,474	4,422,709
Drillships and Related Equipment
Fresh-Start Adjustment [Line Items]
Total Property and equipment	1,962,211	1,926,773	1,919,791	5,928,887
Other property and equipment
Fresh-Start Adjustment [Line Items]
Total Property and equipment	$ 259	$ 682	$ 683	$ 20,737

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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