Document and Entity Information Document Information [Table] Document Information [Line Items] Document and Entity Information Document Type Document Annual Report Document Period End Date Current Fiscal Year End Date Document Transition Report Securities Act File Number Entity Registrant Name Entity Incorporation, State or Country Code Entity Tax Identification Number Entity Address, Address Line One Entity Address, City or Town Entity Address, Country Entity Address, Postal Zip Code City Area Code Local Phone Number Title of 12(b) Security Trading Symbol Security Exchange Name Entity Well-known Seasoned Issuer Entity Voluntary Filers Entity Current Reporting Status Entity Interactive Data Current Entity Filer Category Entity Small Business Entity Emerging Growth Company ICFR Auditor Attestation Flag Document Financial Statement Error Correction [Flag] Entity Shell Company Entity Public Float Entity Common Stock, Shares Outstanding Entity Central Index Key Document Fiscal Year Focus Document Fiscal Period Focus Amendment Flag Auditor Name Auditor Firm ID Auditor Location CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS Statement [Table] Statement [Line Items] Statement Disclosure Operating Income (Loss) [Abstract] Operating revenues Revenue from Contract with Customer, Excluding Assessed Tax Contract drilling revenues Revenue from Contract with Customer, Product and Service [Extensible Enumeration] Costs and Expenses [Abstract] Costs and expenses Cost of Goods and Services Sold Operating and maintenance Cost, Product and Service [Extensible Enumeration] Depreciation, Depletion and Amortization Depreciation and amortization General and Administrative Expense General and administrative Costs and Expenses Total costs and expenses Impairment of Long-Lived Assets to be Disposed of Loss on impairment of assets Aggregate loss on impairment of assets held for sale Loss on impairment of assets Gain (Loss) on Disposition of Property Plant Equipment, Excluding Oil and Gas Property and Timber Property Loss on disposal of assets, net Loss on disposal of assets, net Gain (loss) on the sale of assets Operating Income (Loss) Operating loss Nonoperating Income (Expense) [Abstract] Other income (expense), net Investment Income, Interest Interest income Interest Expense, Nonoperating Interest expense, net of amounts capitalized Total Gain (Loss) on Extinguishment of Debt (Gain) loss on retirement of debt Aggregate net gain (loss) Gain (loss) on retirement of debt Other Nonoperating Income (Expense) Other, net Nonoperating Income (Expense) Total other income (expense), net Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Loss before income tax expense (benefit) Income Tax Expense (Benefit) Income tax expense (benefit) Income tax expense (benefit) Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Net loss Net loss Net loss Net loss attributable to controlling interest Earnings Per Share, Basic Loss per share, basic (in dollars per share) Earnings Per Share, Diluted Loss per share, diluted (in dollars per share) Weighted Average Number of Shares Outstanding, Basic Weighted-average shares for per share calculation, basic (in shares) Weighted-average shares, basic (in shares) Weighted Average Number of Shares Outstanding, Diluted Weighted-average shares for per share calculation, diluted (in shares) Weighted-average shares, diluted (in shares) CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) Other Comprehensive (Income) Loss, Defined Benefit Plan, before Reclassification Adjustment and Tax Components of net periodic benefit costs before reclassifications Other Comprehensive (Income) Loss, Defined Benefit Plan, Reclassification Adjustment from AOCI, before Tax Components of net periodic benefit costs reclassified to net loss Other Comprehensive Income (Loss), before Tax Other comprehensive income (loss) before income taxes Other Comprehensive Income (Loss), Tax Income taxes related to other comprehensive income (loss) Other Comprehensive Income (Loss), Net of Tax Other comprehensive income (loss) Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent Other comprehensive income (loss) attributable to controlling interest Other comprehensive income (loss) attributable to controlling interest Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest Total comprehensive loss Comprehensive Income (Loss), Net of Tax, Attributable to Parent Total comprehensive loss attributable to controlling interest Total comprehensive loss attributable to controlling interest CONDENSED CONSOLIDATED BALANCE SHEETS Assets [Abstract] Assets Cash and Cash Equivalents, at Carrying Value Cash and cash equivalents Receivables, Net, Current Accounts receivable Accounts receivable, net Prepaid Supplies Materials and supplies, net Disposal Group, Including Discontinued Operation, Assets, Current Assets held for sale Restricted Cash and Investments, Current Restricted cash and cash equivalents Other Assets, Current Other current assets Assets, Current Total current assets Property, Plant and Equipment, Gross Property and equipment Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Less accumulated depreciation Property, Plant and Equipment, Net Property and equipment, net Property and equipment, net Finite-Lived Intangible Assets, Net Contract intangible assets Deferred Income Tax Assets, Net Deferred tax assets, net Other Assets, Noncurrent Other assets Assets Total assets Liabilities and Equity [Abstract] Liabilities and equity Accounts Payable, Current Accounts payable Accrued Income Taxes, Current Accrued income taxes Debt, Current Debt due within one year Other Liabilities, Current Other current liabilities Total other current liabilities Liabilities, Current Total current liabilities Long-Term Debt and Lease Obligation Long-term debt Deferred Income Tax Liabilities, Net Deferred tax liabilities, net Other Liabilities, Noncurrent Other long-term liabilities Total other long-term liabilities Liabilities, Noncurrent Total long-term liabilities Commitments and Contingencies Commitments and contingencies Common Stock, Value, Issued Shares, $0.10 par value, [1,057,879,029] authorized, [141,262,093] conditionally authorized, [940,828,901] issued and [875,803,595] outstanding at December 31, 2024, and CHF 0.10 par value, 1,021,294,549 authorized, 142,362,093 conditionally authorized, 843,715,858 issued and 809,030,846 outstanding at December 31, 2023 Additional Paid in Capital Additional paid-in capital Retained Earnings (Accumulated Deficit) Accumulated deficit Accumulated Other Comprehensive Income (Loss), Net of Tax Accumulated other comprehensive loss Equity, Attributable to Parent Total controlling interest shareholders' equity Equity, Attributable to Noncontrolling Interest Noncontrolling interest Equity, Including Portion Attributable to Noncontrolling Interest Balance, end Balance, beginning Total equity Liabilities and Equity Total liabilities and equity Inventory Valuation Reserves Materials and supplies, allowance for obsolescence Common Stock, Par or Stated Value Per Share Shares, Par value Par value of common stock Common Stock, Shares Authorized Shares, authorized Conditional capital represents the amount of additional registered shares that the board is authorized to issue without obtaining additional shareholder approval. Shares Conditionally Authorized Shares, conditionally authorized Common Stock, Shares, Issued Shares, issued Common Stock, Shares, Outstanding Shares, outstanding CONDENSED CONSOLIDATED STATEMENTS OF EQUITY Equity Components [Axis] Equity Component [Domain] Parent [Member] Total controlling interest shareholders' equity Common Stock [Member] Shares Additional Paid-in Capital [Member] Additional paid-in capital Retained Earnings [Member] Accumulated deficit AOCI Attributable to Parent [Member] Accumulated other comprehensive loss Noncontrolling Interest [Member] Noncontrolling interest Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Shareholders' Equity Shares, Issued Balance, end (in shares) Balance, beginning (in shares) The change in equity [net assets] of a business enterprise during a period from transactions and other events and circumstances from non-owner sources which are attributable to the economic entity, including both controlling (parent) and noncontrolling interests. It includes all changes in equity during a period except those resulting from investments by owners and distributions to owners, including any and all transactions which are directly or indirectly attributable to that ownership interest in subsidiary equity which is not attributable to the parent and is not considered redeemable or temporary. Such redeemable or temporary interest is classified outside of permanent equity. Comprehensive Income Net of Tax Including Portion Attributable to Noncontrolling Interest 1 Total comprehensive loss APIC, Share-Based Payment Arrangement, Increase for Cost Recognition Share-based compensation Stock Issued During Period, Value, New Issues Issuance of shares Stock Issued During Period, Shares, New Issues Issuance of shares (in shares) Adjustments to Additional Paid in Capital, Warrant Issued Issuance of warrants Estimated fair value CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS Net Cash Provided by (Used in) Operating Activities [Abstract] Cash flows from operating activities Adjustments, Noncash Items, to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Adjustments to reconcile to net cash provided by operating activities: Amortization of Intangible Assets Amortization of contract intangible asset Share-Based Payment Arrangement, Noncash Expense Share-based compensation expense Amortization of Debt Issuance Costs and Discounts Amortization Amortization of debt-related balances, net Unrealized Gain (Loss) on Derivatives (Gain) loss on adjustment to bifurcated compound exchange feature (Gain) loss on adjustment to bifurcated compound exchange feature Equity Method Investment, Other-than-Temporary Impairment Loss on impairment of investment in unconsolidated affiliate Deferred Income Tax Expense (Benefit) Deferred tax expense (benefit) Deferred income tax expense Other Noncash Income (Expense) Other, net Increase (Decrease) in Contract with Customer, Liability Changes in deferred revenues, net Increase (Decrease) in Deferred Charges Changes in deferred costs, net Increase (Decrease) in Other Operating Assets and Liabilities, Net Changes in other operating assets and liabilities, net Net change in operating assets and liabilities Net Cash Provided by (Used in) Operating Activities Net cash provided by operating activities Net Cash Provided by (Used in) Investing Activities [Abstract] Cash flows from investing activities Payments to Acquire Property, Plant, and Equipment Capital expenditures Total capital expenditures Payments to Fund Long-Term Loans to Related Parties Investment in loans to unconsolidated affiliates Payments to Acquire Interest in Subsidiaries and Affiliates Investment in equity of unconsolidated affiliate Payment to acquire interest Proceeds from Sale of Property, Plant, and Equipment Proceeds from disposal of assets, net of costs to sell Cash Acquired from Acquisition Cash acquired in acquisition of unconsolidated affiliates Net Cash Provided by (Used in) Investing Activities Net cash used in investing activities Net Cash Provided by (Used in) Financing Activities [Abstract] Cash flows from financing activities Repayments of Long-Term Debt Repayments of debt Repayments of debt Proceeds from Debt, Net of Issuance Costs Proceeds from issuance of debt, net of issue costs Proceeds from issuance of debt Proceeds from Issuance of Common Stock Proceeds from issuance of shares, net of issue costs Proceeds from Issuance of Warrants Proceeds from issuance of warrants, net of issue costs Proceeds from (Payments for) Other Financing Activities Other, net Net Cash Provided by (Used in) Financing Activities Net cash provided by (used in) financing activities Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect Net increase (decrease) in unrestricted and restricted cash and cash equivalents Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents Unrestricted and restricted cash and cash equivalents, end of period Unrestricted and restricted cash and cash equivalents, beginning of period Business Nature of Operations [Text Block] Business Significant Accounting Policies Basis of Presentation and Significant Accounting Policies [Text Block] Significant Accounting Policies Accounting Standards Updates Accounting Standards Update and Change in Accounting Principle [Text Block] Accounting Standards Update Unconsolidated Affiliates Equity Method Investments and Joint Ventures Disclosure [Text Block] Unconsolidated Affiliates Revenues. Revenue from Contract with Customer [Text Block] Revenues LONG LIVED ASSETS The entire disclosure for long-lived assets including property and equipment and right-of-use assets used in normal conduct of business and not intended for resale. Long-Lived Assets Disclosure [Text Block] Long -Lived Assets Leases The entire disclosure of information about leases. Lease Disclosure [Text Block] Leases Debt Debt Disclosure [Text Block] Debt Benefit Plans Retirement Benefits [Text Block] Benefit Plans Income Taxes Income Tax Disclosure [Text Block] Income Taxes Loss Per Share Earnings Per Share [Text Block] Loss Per Share Commitments and Contingencies. Commitments and Contingencies Disclosure [Text Block] Commitments and Contingencies Equity Equity [Text Block] Equity Share-Based Compensation Share-Based Payment Arrangement [Text Block] Share-Based Compensation Supplemental Segment information Segment Reporting Disclosure [Text Block] Supplemental Segment information Supplemental Balance Sheet Information Other Liabilities Disclosure [Text Block] Supplemental Balance Sheet Information