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The amount of assets related to Zonda arbitration.

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Interest expense (income) directly attributable to an award in settlement of litigation to be decided.

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Amount of bankruptcy claim filed with bankruptcy court.

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Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Excludes cash and cash equivalents within disposal group and discontinued operation.

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Amount of structure or a modification to a structure under construction. Includes recently completed structures or modifications to structures that have not been placed into service.

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Amount awarded to other party in judgment or settlement of litigation.

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Amount, after allowance for credit loss, of accounts and financing receivables, classified as noncurrent. Includes, but is not limited to, notes and loan receivable.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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The amount of loss pertaining to the specified contingency that was charged against earnings in the period, including the effects of revisions in previously reported estimates.

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Amount of increase (decrease) of receivables pertaining to a loss contingency.

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Amount before accumulated depreciation of tangible personal property used to produce goods and services, including, but is not limited to, tools, dies and molds, computer and office equipment.

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The cash outflow for purchases of and capital improvements on property, plant and equipment (capital expenditures), software, and other intangible assets.

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Commitments and Contingencies - Loss from Construction Contract Rescission (Details) - USD ($) $ in Thousands				12 Months Ended
	Jan. 15, 2020	Dec. 20, 2018	Oct. 29, 2015	Dec. 31, 2019	Jan. 30, 2019	Nov. 19, 2018	Jan. 25, 2013
Loss Contingencies [Line Items]
Long-term receivable						$ 202,575
Assets Related to Zonda Arbitration						$ 204,700
Zonda debtors
Loss Contingencies [Line Items]
Cash					$ 4,600
Loss from unconsolidated subsidiaries				$ 216,700
Loss contingency receivable write off				$ (204,700)
SHI \| Settled litigation \| Subsequent Event
Loss Contingencies [Line Items]
Claim awarded to SHI	$ 320,000
SHI \| Pending Litigation \| Subsequent Event
Loss Contingencies [Line Items]
Interest award to be decided	$ 100,000
Drillships and Related Equipment \| SHI
Loss Contingencies [Line Items]
Aggregate purchase price of vessels under construction							$ 517,500
Asserted claims		$ 387,400
Property and equipment			$ 75,000
Capital Addition Purchase Commitments \| Drillships and Related Equipment \| SHI
Loss Contingencies [Line Items]
Carrying value at date of rescission			315,700
Payments of advances on contract to purchase drillship			$ 181,100