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Total Number of Shares Repurchased To Date Entity Tax Identification Number Entity Tax Identification Number Treasury Stock, Value, Acquired, Cost Method Treasury Stock, Value, Acquired, Cost Method Treasury Stock, Value, Acquired, Cost Method Revenue Revenue [Policy Text Block] Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents Cash and Cash Equivalents—Beginning of Period Cash and Cash Equivalents—End of Period Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation Intangible Asset, Finite-Lived [Table] Intangible Asset, Finite-Lived [Table] Other Other Accrued Liabilities, Current Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Base Rate Base Rate [Member] Interest Rate Component [Axis] Interest Rate Component [Axis] Interest Rate Component [Axis] Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest, Total Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest Debt Instrument [Axis] Debt Instrument [Axis] Subsequent Event [Table] Subsequent Event [Table] Reporting Unit [Domain] Reporting Unit [Domain] Equity Method Investment, Ownership Percentage Equity Method Investment, Ownership Percentage Noncash compensation Share-Based Payment Arrangement, Noncash Expense Tax Period [Axis] Tax Period [Axis] Schedule of Debt Schedule of Debt [Table Text Block] Long-term Debt, Type [Domain] Long-Term Debt, Type [Domain] Basic (in dollars per share) Earnings Per Share, Basic Measurement Input Type [Axis] Measurement Input Type [Axis] Payments for Repurchase of Common Stock Payments for Repurchase of Common Stock Contract liabilities Contract with Customer, Liability, Current Total Current Assets Assets, Current Statistical Measurement [Axis] Statistical Measurement [Axis] Long-term debt Long-term Debt Long-Term Debt, Excluding Current Maturities Award Type [Axis] Award Type [Axis] Payments of financing costs Payments of Financing Costs Billings - Contract Assets Billings - Contract Assets Billings - Contract Assets Accounts receivable, net Accounts Receivable, after Allowance for Credit Loss, Current CARES Act Tax Refund CARES Act Tax Refund [Member] CARES Act Tax Refund Retained earnings Retained Earnings (Accumulated Deficit) All Currencies [Domain] All Currencies [Domain] Common Stock [Member] Common Stock [Member] Other Borrowings Other Borrowings Debt Securities, Available-for-sale Debt Securities, Available-for-Sale liquidity ratio liquidity ratio liquidity ratio Cover [Abstract] Senior Notes due 2024 [Member] Senior Notes due 2024 [Member] Senior Notes due 2024 [Member] Reclassification, Comparability Adjustment Reclassification, Comparability Adjustment [Policy Text Block] Non-US [Member] Non-US [Member] Long-Lived Asset, Held and Used, Impairment [Table Text Block] Long-Lived Asset, Held and Used, Impairment [Table Text Block] United Kingdom [Member] United Kingdom [Member] UNITED KINGDOM Derivative Contract [Domain] Derivative Contract [Domain] Subsea Projects [Member] Subsea Projects [Member] Subsea Projects [Member] Subsea Projects [Member] Capitalized Cost, Software to be Sold, Leased, or Marketed, Period Increase (Decrease) Capitalized Cost, Software to be Sold, Leased, or Marketed, Period Increase (Decrease) Type of Adoption [Domain] Accounting Standards Update [Domain] Total Liabilities and Equity Liabilities and Equity Costs to fulfill a contract Costs to fulfill a contract Costs incurred to fulfill a contract Noncontrolling interest Equity, Attributable to Noncontrolling Interest Segments [Axis] Segments [Axis] Geographic Distribution [Domain] Geographic Distribution [Domain] Income Tax Jurisdiction [Domain] Income Tax Jurisdiction [Domain] Increase (Decrease) in Other Noncurrent Liabilities Increase (Decrease) in Other Noncurrent Liabilities Other income (expense), net Other Nonoperating Income (Expense) Debt Long-Term Debt [Text Block] Oceaneering Shareholders' Equity [Member] Parent [Member] Africa [Member] Africa [Member] Property, Plant, and Equipment [Table] Property, Plant, and Equipment [Table] Sublimit member Sublimit member [Member] Sublimit member Subsea Robotics Member Subsea Robotics Member [Member] Subsea Robotics Member Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Basis spread on variable rate Line of Credit Facility, Basis Spread on Variable Rate Line of Credit Facility, Basis Spread on Variable Rate Debt Security Category [Axis] Debt Security Category [Axis] Unallocated Expenses [Member] Unallocated Expenses Member Unallocated Expenses [Member] Inventory [Line Items] Inventory [Line Items] Share-based Compensation Arrangement by Share-based Payment Award, Terms of Award Share-Based Compensation Arrangement by Share-Based Payment Award, Terms of Award Credit Facility [Axis] Credit Facility [Axis] Income Tax Jurisdiction [Axis] Income Tax Jurisdiction [Axis] CapitalizedCloudBasedServiceContractCosts CapitalizedCloudBasedServiceContractCosts CapitalizedCloudBasedServiceContractCosts Income Taxes Income Tax Disclosure [Text Block] Accounts payable Accounts Payable, Current Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Other Noncash Income (Expense) Other Noncash Income (Expense) Debt Instrument [Line Items] Debt Instrument [Line Items] Summary of Income Tax Examinations Summary of Income Tax Examinations [Table Text Block] Additional Paid-in Capital [Member] Additional Paid-in Capital [Member] Entity Filer Category Entity Filer Category Short-term Investments Short-Term Investments Goodwill, Impairment Loss Goodwill, Impairment Loss weighted average member high range [Member] weighted average member high range [Member] weighted average member high range Advanced Technologies [Member] Advanced Technologies [Member] Advanced Technologies [Member] Advanced Technologies [Member] Subsea Robotics Other Inventory, Net of Reserves Interest Receivable Interest Receivable Compensation cost not yet recognized Share-Based Payment Arrangement, Nonvested Award, Excluding Option, Cost Not yet Recognized, Amount Cash and cash equivalents Cash and Cash Equivalent Tax Period [Domain] Tax Period [Domain] Income Taxes Receivable Income Taxes Receivable Depreciation, Depletion and Amortization Depreciation, Depletion and Amortization Inventory, Gross Inventory, Gross Revenue Recognition for Remaining Performance Obligations in next 24 months Revenue Recognition for Remaining Performance Obligations in next 24 months Revenue Recognition for Remaining Performance Obligations in next 24 months Net income (loss) Net income (loss) Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Deferred Finance Costs, Own-share Lending Arrangement, Issuance Costs, Accumulated Amortization Amortization deferred finance cost Amortization deferred finance cost Cloud based service contract costs policy text block Cloud based service contract costs policy text block [Text Block] Cloud based service contract costs policy text block Earnings (Loss) per Share, Share-based Compensation and Share Repurchase Plan Shareholders' Equity, Earnings Per Share And Stock-Based Compensation [Text Block] Shareholders' Equity, Earnings per Share and Stock-Based Compensation [Textblock] Current Assets: Assets, Current [Abstract] Foreign Currency Translations Foreign Currency Transactions and Translations Policy [Policy Text Block] Senior Notes Senior Notes [Member] Entity Address, Address Line One Entity Address, Address Line One Impairment of Intangible Assets, Finite-lived Intangible Asset, Finite-Lived, Impairment Loss Provision (benefit) for income taxes Income Tax Expense (Benefit) Foreign Currency Transaction Gain (Loss), before Tax Gain (Loss), Foreign Currency Transaction, before Tax Derivative, Variable Interest Rate Derivative, Variable Interest Rate Accounts Receivable, Allowance for Credit Losses Accounts Receivable, Allowance for Credit Losses Amount of allowance for credit loss on accounts receivable. Financing Receivable Allowance for Credit Losses Evaluation Period Financing Receivable Allowance for Credit Losses Evaluation Period Financing Receivable Allowance for Credit Losses Evaluation Period Cost of services and products Cost of Product and Service Sold Principles of Consolidation Consolidation, Policy [Policy Text Block] Net Increase (Decrease) in Cash and Cash Equivalents Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation Forecast Forecast [Member] Derivative Liability, Notional Amount Derivative Liability, Notional Amount Disclosure Text Block Supplement [Abstract] Disclosure Text Block Supplement [Abstract] New Accounting Pronouncements and Changes in Accounting Principles [Text Block] Accounting Standards Update and Change in Accounting Principle [Text Block] Net Income (Loss) Net Income (Loss) Net Income (Loss) Attributable to Parent Long-term Debt, Type [Axis] Long-Term Debt, Type [Axis] Unamortized discount and debt issuance costs Unamortized Debt Issuance Expense Statement [Table] Statement [Table] Dispositions of property and equipment Proceeds from Sale of Property, Plant, and Equipment Weighted Average [Member] weighted average member low range [Member] weighted average member low range [Member] Tax Year 2013 [Member] Tax Year 2013 [Member] Interest income Investment Income, Interest Shareholders' Equity, Earnings Per Share And Stock-Based Compensation [Line Items] Shareholders' Equity, Earnings Per Share And Stock-Based Compensation [Line Items] Shareholders' Equity, Earnings Per Share And Stock-Based Compensation [Line Items] Accounting Policies Credit Losses [Abstract] Accounting Policies Credit Losses [Abstract] Accounting Policies Credit Losses [Abstract] Maximum Permitted Leverage Ratio Maximum Permitted Leverage Ratio Maximum Permitted Leverage Ratio Advance Type [Domain] Advance Type [Domain] Advance Type [Domain] Leases Lessee, Leases [Policy Text Block] Contract with Customer, Asset and Liability [Table Text Block] Contract with Customer, Contract Asset, Contract Liability, and Receivable [Table Text Block] Geographic Distribution [Axis] Geographic Distribution [Axis] Fair Value Hedge Liabilities Fair Value Hedge Liabilities Accrued liabilities: Accrued Liabilities [Abstract]