$OII
Oceaneering International Inc Stock $oii

$oii Overview Financials Valuation SEC Filings Company Website

2020 Form 10-K Financial Statement

#000007375621000023 Filed on February 26, 2021

Income Statement

Concept	2020	2019 Q4	2019 Q1
Revenue	$1.828B	$560.8M	$493.9M
YoY Change	-10.75%	13.27%	18.6%
Cost Of Revenue	$1.664B	$581.2M	$466.3M
YoY Change	-14.66%	25.77%	17.28%
Gross Profit	$163.9M	-$20.40M	$27.59M
YoY Change	66.87%	-161.82%	46.52%
Gross Profit Margin	8.97%	-3.64%	5.59%
Selling, General & Admin	$195.7M	$59.70M	$49.30M
YoY Change	-8.93%	11.17%	7.23%
% of Gross Profit	119.37%		178.71%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$170.0M	$48.00M	$49.00M
YoY Change	-19.81%	-62.76%	-9.43%
% of Gross Profit	103.7%		177.62%
Operating Expenses	$195.7M	$59.70M	$49.30M
YoY Change	-8.93%	11.17%	7.23%
Operating Profit	-$446.1M	-$254.2M	-$21.71M
YoY Change	53.44%	161.64%	-20.02%
Interest Expense	$43.90M	-$300.0K	$9.424M
YoY Change	2.78%	-104.23%	0.57%
% of Operating Profit
Other Income/Expense, Net	-$300.0K	-$12.80M	$719.0K
YoY Change	-95.47%	-28.49%	-108.48%
Pretax Income	-$306.4M	-$267.3M	-$27.98M
YoY Change	12.83%	147.5%	-35.3%
Income Tax	-$2.146M	$2.000M	-$3.152M
% Of Pretax Income
Net Earnings	-$496.8M	-$262.9M	-$24.83M
YoY Change	42.56%	310.14%	-49.47%
Net Earnings / Revenue	-27.18%	-46.88%	-5.03%
Basic Earnings Per Share	-$5.01		-$0.25
Diluted Earnings Per Share	-$5.01	-$2.658M	-$0.25
COMMON SHARES
Basic Shares Outstanding	99.23M shares	98.93M shares	98.71M shares
Diluted Shares Outstanding	99.23M shares		98.71M shares

Balance Sheet

Concept	2020	2019 Q4	2019 Q1
SHORT-TERM ASSETS
Cash & Short-Term Investments	$462.2M	$383.8M	$351.9M
YoY Change	20.43%	5.32%	5.08%
Cash & Equivalents	$452.0M	$373.7M	$341.8M
Short-Term Investments	$10.20M	$10.20M	$10.20M
Other Short-Term Assets	$48.60M	$53.39M	$72.71M
YoY Change	12.5%	-24.84%	-36.5%
Inventory	$141.2M	$174.7M	$203.0M
Prepaid Expenses		$43.21M
Receivables	$518.2M	$421.4M	$381.5M
Other Receivables	$0.00	$0.00	$0.00
Total Short-Term Assets	$1.170B	$1.244B	$1.220B
YoY Change	-5.95%	-0.04%	10.37%
LONG-TERM ASSETS
Property, Plant & Equipment	$732.3M	$776.5M	$955.7M
YoY Change	-22.08%	-19.5%	-9.35%
Goodwill		$405.1M	$421.6M
YoY Change		-1.95%	-17.69%
Intangibles		$25.77M
YoY Change		-67.78%
Long-Term Investments	$34.20M	$37.90M
YoY Change	-9.76%	-3.65%
Other Assets	$59.80M	$151.4M	$191.5M
YoY Change	-31.81%	-25.18%	-25.32%
Total Long-Term Assets	$875.5M	$719.7M	$1.751B
YoY Change	-41.49%	16.94%	-3.94%
TOTAL ASSETS
Total Short-Term Assets	$1.170B	$1.244B	$1.220B
Total Long-Term Assets	$875.5M	$719.7M	$1.751B
Total Assets	$2.046B	$2.741B	$2.972B
YoY Change	-25.35%	-2.99%	1.46%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$94.20M	$145.9M	$111.7M
YoY Change	-35.44%	42.19%	34.64%
Accrued Expenses	$256.9M	$337.7M	$309.9M
YoY Change	-14.57%	10.02%	-4.59%
Deferred Revenue		$117.3M	$78.67M
YoY Change		37.77%
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$437.1M	$601.0M	$500.3M
YoY Change	-27.27%	21.47%	34.3%
LONG-TERM LIABILITIES
Long-Term Debt	$805.3M	$796.5M	$791.0M
YoY Change	1.1%	1.26%	0.75%
Other Long-Term Liabilities	$242.3M	$106.8M	$122.3M
YoY Change	-9.15%	-16.81%	-6.74%
Total Long-Term Liabilities	$1.048B	$903.3M	$913.3M
YoY Change	-1.47%	-1.27%	-0.32%
TOTAL LIABILITIES
Total Short-Term Liabilities	$437.1M	$601.0M	$500.3M
Total Long-Term Liabilities	$1.048B	$903.3M	$913.3M
Total Liabilities	$1.494B	$1.504B	$1.414B
YoY Change	-10.63%	6.71%	9.69%
SHAREHOLDERS EQUITY
Retained Earnings		$1.850B	$2.174B
YoY Change		-16.07%	-10.05%
Common Stock		$234.8M	$226.5M
YoY Change		-5.36%	-5.51%
Preferred Stock
YoY Change
Treasury Stock (at cost)		$681.6M	$681.8M
YoY Change		-3.19%	-3.24%
Treasury Stock Shares		12.29M shares	11.91M shares
Shareholders Equity	$552.1M	$1.069B	$1.385B
YoY Change
Total Liabilities & Shareholders Equity	$2.046B	$2.741B	$2.972B
YoY Change	-25.35%	-2.99%	1.46%

Cashflow Statement

Concept	2020	2019 Q4	2019 Q1
OPERATING ACTIVITIES
Net Income	-$496.8M	-$262.9M	-$24.83M
YoY Change	42.56%	310.14%	-49.47%
Depreciation, Depletion And Amortization	$170.0M	$48.00M	$49.00M
YoY Change	-19.81%	-62.76%	-9.43%
Cash From Operating Activities	$136.6M	$45.40M	$19.12M
YoY Change	-13.28%	4944.44%	240.41%
INVESTING ACTIVITIES
Capital Expenditures	$60.69M	-$18.90M	$29.96M
YoY Change	-58.91%	-26.17%	16.45%
Acquisitions	$0.00		$0.00
YoY Change			-100.0%
Other Investing Activities	$0.00	$4.100M	$0.00
YoY Change		-54.95%	-100.0%
Cash From Investing Activities	-$52.59M	-$14.80M	-$29.91M
YoY Change	-60.98%	-9.76%	-67.61%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net	$0.00		$0.00
YoY Change			-100.0%
Cash From Financing Activities	-$1.699M	0.000	-$2.338M
YoY Change	-26.1%	-100.0%	-59.38%
NET CHANGE
Cash From Operating Activities	$136.6M	45.40M	$19.12M
Cash From Investing Activities	-$52.59M	-14.80M	-$29.91M
Cash From Financing Activities	-$1.699M	0.000	-$2.338M
Net Change In Cash	$82.36M	30.60M	-$12.50M
YoY Change	302.08%	-298.7%	-86.9%
FREE CASH FLOW
Cash From Operating Activities	$136.6M	$45.40M	$19.12M
Capital Expenditures	$60.69M	-$18.90M	$29.96M
Free Cash Flow	$75.96M	$64.30M	-$10.84M
YoY Change	668.44%	142.64%	-46.11%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2020	dei	Entity Registrant Name EntityRegistrantName	OCEANEERING INTERNATIONAL INC
CY2020	dei	Entity Central Index Key EntityCentralIndexKey	0000073756
CY2020	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2020	dei	Document Period End Date DocumentPeriodEndDate	2020-12-31
CY2020	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2020
CY2020	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2020	dei	Amendment Flag AmendmentFlag	false
CY2021Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	99308363	shares
CY2020Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	7499000	USD
CY2019Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	7116000	USD
CY2020Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.25
CY2019Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.25
CY2020Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	360000000	shares
CY2019Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	360000000	shares
CY2020Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	110834088	shares
CY2019Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	110834088	shares
CY2020Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	11903252	shares
CY2019Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	12294873	shares
CY2020	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	0	shares
CY2019	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	0	shares
CY2018	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	0	shares
CY2020	us-gaap	Segment Reporting Disclosure Of Major Customers SegmentReportingDisclosureOfMajorCustomers	10
CY2019	us-gaap	Segment Reporting Disclosure Of Major Customers SegmentReportingDisclosureOfMajorCustomers	10
CY2018	us-gaap	Segment Reporting Disclosure Of Major Customers SegmentReportingDisclosureOfMajorCustomers	12
	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	0	USD
CY2020	dei	Document Type DocumentType	10-K
CY2020	dei	Document Annual Report DocumentAnnualReport	true
CY2020	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2020	dei	Document Transition Report DocumentTransitionReport	false
CY2020	dei	Entity File Number EntityFileNumber	1-10945
CY2020	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	DE
CY2020	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	95-2628227
CY2020	dei	Entity Address Address Line1 EntityAddressAddressLine1	11911 FM 529
CY2020	dei	Entity Address City Or Town EntityAddressCityOrTown	Houston,
CY2020	dei	Entity Address State Or Province EntityAddressStateOrProvince	TX
CY2020	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	77041
CY2020	dei	City Area Code CityAreaCode	713
CY2020	dei	Local Phone Number LocalPhoneNumber	329-4500
CY2020	dei	Security12b Title Security12bTitle	Common stock, par value $0.25 per share
CY2020	dei	Trading Symbol TradingSymbol	OII
CY2020	dei	Security Exchange Name SecurityExchangeName	NYSE
CY2020	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2020	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2020	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2020	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2020	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2020	dei	Icfr Auditor Attestation Flag IcfrAuditorAttestationFlag	true
CY2020	dei	Entity Shell Company EntityShellCompany	false
CY2020Q2	us-gaap	Share Price SharePrice	6.39
CY2020Q2	dei	Entity Public Float EntityPublicFloat	624000000	USD
CY2020	dei	Entity Small Business EntitySmallBusiness	false
CY2020	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2021Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	99308363	shares
CY2020	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2020
CY2020	oii	Percentageof Completion Percentof Revenue PercentageofCompletionPercentofRevenue	0.24
CY2020Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	452016000	USD
CY2019Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	373655000	USD
CY2020Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	296214000	USD
CY2019Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	421360000	USD
CY2020Q4	us-gaap	Contract With Customer Asset Net Current ContractWithCustomerAssetNetCurrent	221997000	USD
CY2019Q4	us-gaap	Contract With Customer Asset Net Current ContractWithCustomerAssetNetCurrent	221288000	USD
CY2020Q4	us-gaap	Inventory Net InventoryNet	141241000	USD
CY2019Q4	us-gaap	Inventory Net InventoryNet	174744000	USD
CY2020Q4	us-gaap	Assets Noncurrent AssetsNoncurrent	284472000	USD
CY2019Q4	us-gaap	Assets Noncurrent AssetsNoncurrent	719695000	USD
CY2020Q4	us-gaap	Assets Assets	2045842000	USD
CY2019Q4	us-gaap	Assets Assets	2740663000	USD
CY2020Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	94207000	USD
CY2019Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	145933000	USD
CY2020Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	292863000	USD
CY2019Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	337681000	USD
CY2020Q4	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	50046000	USD
CY2019Q4	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	117342000	USD
CY2020Q4	us-gaap	Other Assets Current OtherAssetsCurrent	58795000	USD
CY2019Q4	us-gaap	Other Assets Current OtherAssetsCurrent	53389000	USD
CY2020Q4	us-gaap	Assets Current AssetsCurrent	1170263000	USD
CY2019Q4	us-gaap	Assets Current AssetsCurrent	1244436000	USD
CY2020Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	2456602000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	2622185000	USD
CY2020Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	1865495000	USD
CY2019Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	1845653000	USD
CY2020Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	591107000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	776532000	USD
CY2020Q4	us-gaap	Goodwill Goodwill	35016000	USD
CY2019Q4	us-gaap	Goodwill Goodwill	405079000	USD
CY2020Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	108250000	USD
CY2019Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	151378000	USD
CY2020Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	141206000	USD
CY2019Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	163238000	USD
CY2019Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	796516000	USD
CY2020Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	156074000	USD
CY2020Q4	us-gaap	Liabilities Current LiabilitiesCurrent	437116000	USD
CY2019Q4	us-gaap	Liabilities Current LiabilitiesCurrent	600956000	USD
CY2020Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	805251000	USD
CY2020Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	89244000	USD
CY2019Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	106794000	USD
CY2019Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	160988000	USD
CY2020Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2019Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2020Q4	us-gaap	Common Stock Value CommonStockValue	27709000	USD
CY2019Q4	us-gaap	Common Stock Value CommonStockValue	27709000	USD
CY2020Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	192492000	USD
CY2019Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	207130000	USD
CY2020Q4	us-gaap	Treasury Stock Common Value TreasuryStockCommonValue	660021000	USD
CY2019Q4	us-gaap	Treasury Stock Common Value TreasuryStockCommonValue	681640000	USD
CY2020Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	1351220000	USD
CY2019Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	1850244000	USD
CY2019Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	1850244000	USD
CY2020Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-359306000	USD
CY2019Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-334097000	USD
CY2020Q4	us-gaap	Stockholders Equity StockholdersEquity	552094000	USD
CY2019Q4	us-gaap	Stockholders Equity StockholdersEquity	1069346000	USD
CY2020Q4	us-gaap	Noncontrolling Interest In Variable Interest Entity NoncontrollingInterestInVariableInterestEntity	6063000	USD
CY2019Q4	us-gaap	Noncontrolling Interest In Variable Interest Entity NoncontrollingInterestInVariableInterestEntity	6063000	USD
CY2020Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	558157000	USD
CY2019Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	1075409000	USD
CY2020Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	2045842000	USD
CY2019Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	2740663000	USD
CY2020	us-gaap	Revenues Revenues	1827889000	USD
CY2019	us-gaap	Revenues Revenues	2048124000	USD
CY2018	us-gaap	Revenues Revenues	1909482000	USD
CY2020	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	1663948000	USD
CY2019	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	1949880000	USD
CY2018	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	1780256000	USD
CY2020	us-gaap	Gross Profit GrossProfit	163941000	USD
CY2019	us-gaap	Gross Profit GrossProfit	98244000	USD
CY2020	us-gaap	Impairment Of Long Lived Assets Held For Use ImpairmentOfLongLivedAssetsHeldForUse	70445000	USD
CY2018	us-gaap	Gross Profit GrossProfit	129226000	USD
CY2020	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	195695000	USD
CY2019	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	214891000	USD
CY2018	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	198259000	USD
CY2020	us-gaap	Other Asset Impairment Charges OtherAssetImpairmentCharges	70445000	USD
CY2019	us-gaap	Other Asset Impairment Charges OtherAssetImpairmentCharges	159353000	USD
CY2020	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	343880000	USD
CY2019	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	14713000	USD
CY2018	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	76449000	USD
CY2020	us-gaap	Operating Income Loss OperatingIncomeLoss	-446079000	USD
CY2019	us-gaap	Operating Income Loss OperatingIncomeLoss	-290713000	USD
CY2018	us-gaap	Operating Income Loss OperatingIncomeLoss	-145482000	USD
CY2020	us-gaap	Investment Income Interest InvestmentIncomeInterest	3083000	USD
CY2019	us-gaap	Investment Income Interest InvestmentIncomeInterest	7893000	USD
CY2018	us-gaap	Investment Income Interest InvestmentIncomeInterest	9962000	USD
CY2020	us-gaap	Interest Expense InterestExpense	43900000	USD
CY2019	us-gaap	Interest Expense InterestExpense	42711000	USD
CY2018	us-gaap	Interest Expense InterestExpense	37742000	USD
CY2020	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	2268000	USD
CY2019	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	1331000	USD
CY2018	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-3783000	USD
CY2020	us-gaap	Other Nonoperating Income OtherNonoperatingIncome	14269000	USD
CY2019	us-gaap	Other Nonoperating Income OtherNonoperatingIncome	6621000	USD
CY2018	us-gaap	Other Nonoperating Income OtherNonoperatingIncome	8788000	USD
CY2020	oii	Income Including Equity Affiliate Earnings Before Income Taxes IncomeIncludingEquityAffiliateEarningsBeforeIncomeTaxes	-498897000	USD
CY2019	oii	Income Including Equity Affiliate Earnings Before Income Taxes IncomeIncludingEquityAffiliateEarningsBeforeIncomeTaxes	-330821000	USD
CY2018	oii	Income Including Equity Affiliate Earnings Before Income Taxes IncomeIncludingEquityAffiliateEarningsBeforeIncomeTaxes	-185833000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-2146000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	17623000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	26494000	USD
CY2020	us-gaap	Profit Loss ProfitLoss	-496751000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	-348444000	USD
CY2018	us-gaap	Profit Loss ProfitLoss	-212327000	USD
CY2020	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	99233000	shares
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	98876000	shares
CY2018	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	98496000	shares
CY2020	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	99233000	shares
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	98876000	shares
CY2018	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	98496000	shares
CY2020	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-5.01
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-3.52
CY2018	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-2.16
CY2020	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-5.01
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-3.52
CY2018	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-2.16
CY2020	us-gaap	Profit Loss ProfitLoss	-496751000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	-348444000	USD
CY2018	us-gaap	Profit Loss ProfitLoss	-212327000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-25209000	USD
CY2018	us-gaap	Cost Of Goods And Services Sold Depreciation And Amortization CostOfGoodsAndServicesSoldDepreciationAndAmortization	293590000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	0	USD
CY2019	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	5280000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-47026000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	0	USD
CY2018	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-215000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-25209000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	5280000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-47241000	USD
CY2020	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	-521960000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	-343164000	USD
CY2018	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	-259568000	USD
CY2020	us-gaap	Profit Loss ProfitLoss	-496751000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	-348444000	USD
CY2018	us-gaap	Profit Loss ProfitLoss	-212327000	USD
CY2020	us-gaap	Cost Of Goods And Services Sold Depreciation And Amortization CostOfGoodsAndServicesSoldDepreciationAndAmortization	528895000	USD
CY2019	us-gaap	Cost Of Goods And Services Sold Depreciation And Amortization CostOfGoodsAndServicesSoldDepreciationAndAmortization	263427000	USD
CY2019	us-gaap	Impairment Of Long Lived Assets Held For Use ImpairmentOfLongLivedAssetsHeldForUse	159353000	USD
CY2020	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-4158000	USD
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-12268000	USD
CY2018	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	11912000	USD
CY2020	us-gaap	Inventory Write Down InventoryWriteDown	7038000	USD
CY2019	us-gaap	Inventory Write Down InventoryWriteDown	21285000	USD
CY2020	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	1521000	USD
CY2019	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	-7664000	USD
CY2018	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	-8215000	USD
CY2020	us-gaap	Share Based Compensation ShareBasedCompensation	8681000	USD
CY2019	us-gaap	Share Based Compensation ShareBasedCompensation	11432000	USD
CY2018	us-gaap	Share Based Compensation ShareBasedCompensation	11620000	USD
CY2020	us-gaap	Other Noncash Expense OtherNoncashExpense	4035000	USD
CY2019	us-gaap	Other Noncash Expense OtherNoncashExpense	3651000	USD
CY2020	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	125541000	USD
CY2019	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	-17561000	USD
CY2018	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	-86724000	USD
CY2020	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	26466000	USD
CY2019	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-11777000	USD
CY2018	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-12485000	USD
CY2020	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	12840000	USD
CY2019	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	0	USD
CY2018	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	0	USD
CY2020	oii	Effect Of Exchange Rate On Working Capital EffectOfExchangeRateOnWorkingCapital	3638000	USD
CY2019	oii	Effect Of Exchange Rate On Working Capital EffectOfExchangeRateOnWorkingCapital	16246000	USD
CY2018	oii	Effect Of Exchange Rate On Working Capital EffectOfExchangeRateOnWorkingCapital	13587000	USD
CY2020	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	8927000	USD
CY2019	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	5533000	USD
CY2018	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-4369000	USD
CY2020	us-gaap	Increase Decrease In Other Current Liabilities IncreaseDecreaseInOtherCurrentLiabilities	-138932000	USD
CY2019	us-gaap	Increase Decrease In Other Current Liabilities IncreaseDecreaseInOtherCurrentLiabilities	76552000	USD
CY2018	us-gaap	Increase Decrease In Other Current Liabilities IncreaseDecreaseInOtherCurrentLiabilities	25968000	USD
CY2020	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-13469000	USD
CY2019	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-2196000	USD
CY2018	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	4010000	USD
CY2020	us-gaap	Adjustments To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities	633398000	USD
CY2019	us-gaap	Adjustments To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities	506013000	USD
CY2018	us-gaap	Adjustments To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities	248894000	USD
CY2020	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	136647000	USD
CY2019	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	157569000	USD
CY2018	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	36567000	USD
CY2020	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	60687000	USD
CY2019	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	147684000	USD
CY2018	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	109467000	USD
CY2020	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	0	USD
CY2019	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	0	USD
CY2018	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	68571000	USD
CY2020	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	0	USD
CY2019	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	0	USD
CY2019	us-gaap	Payments To Acquire Available For Sale Securities PaymentsToAcquireAvailableForSaleSecurities	0	USD
CY2018	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	69789000	USD
CY2020	us-gaap	Payments To Acquire Available For Sale Securities PaymentsToAcquireAvailableForSaleSecurities	0	USD
CY2018	us-gaap	Payments To Acquire Available For Sale Securities PaymentsToAcquireAvailableForSaleSecurities	10236000	USD
CY2020	us-gaap	Proceeds From Equity Method Investment Dividends Or Distributions Return Of Capital ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital	6207000	USD
CY2019	us-gaap	Proceeds From Equity Method Investment Dividends Or Distributions Return Of Capital ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital	3388000	USD
CY2018	us-gaap	Proceeds From Equity Method Investment Dividends Or Distributions Return Of Capital ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital	2372000	USD
CY2020	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	1890000	USD
CY2019	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	9509000	USD
CY2018	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	17239000	USD
CY2020	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	0	USD
CY2019	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	0	USD
CY2018	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	32000	USD
CY2020	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-52590000	USD
CY2019	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-134787000	USD
CY2018	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-98842000	USD
CY2020	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	0	USD
CY2019	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	0	USD
CY2018	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	295816000	USD
CY2020	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	0	USD
CY2019	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	0	USD
CY2018	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	300000000	USD
CY2020	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-1699000	USD
CY2019	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-2299000	USD
CY2018	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-1444000	USD
CY2020	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-1699000	USD
CY2019	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-2299000	USD
CY2018	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-5628000	USD
CY2020	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	-3997000	USD
CY2019	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	-1087000	USD
CY2018	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	-8154000	USD
CY2020	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	78361000	USD
CY2019	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	19396000	USD
CY2019	us-gaap	Stockholders Equity Other StockholdersEquityOther	-5860000	USD
CY2018	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	-76057000	USD
CY2019Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	373655000	USD
CY2018Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	354259000	USD
CY2017Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	430316000	USD
CY2020Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	452016000	USD
CY2019Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	373655000	USD
CY2018Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	354259000	USD
CY2017Q4	us-gaap	Stockholders Equity StockholdersEquity	1659164000	USD
CY2017Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	1664518000	USD
CY2018	us-gaap	Stockholders Equity Other StockholdersEquityOther	-537000	USD
CY2018	us-gaap	Profit Loss ProfitLoss	-212327000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-47241000	USD
CY2018	us-gaap	Restricted Stock Expense RestrictedStockExpense	10176000	USD
CY2018	us-gaap	Noncontrolling Interest Increase From Business Combination NoncontrollingInterestIncreaseFromBusinessCombination	709000	USD
CY2018Q4	us-gaap	Stockholders Equity StockholdersEquity	1409235000	USD
CY2018Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	1415298000	USD
CY2019	us-gaap	Restricted Stock Expense RestrictedStockExpense	9135000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	-348444000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	-348444000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	5280000	USD
CY2019Q4	us-gaap	Stockholders Equity StockholdersEquity	1069346000	USD
CY2019Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	1075409000	USD
CY2020	us-gaap	Stockholders Equity Other StockholdersEquityOther	-2273000	USD
CY2020	us-gaap	Profit Loss ProfitLoss	-496751000	USD
CY2020	us-gaap	Profit Loss ProfitLoss	-496751000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-25209000	USD
CY2020	us-gaap	Restricted Stock Expense RestrictedStockExpense	6981000	USD
CY2020	us-gaap	Stock Issued During Period Value Restricted Stock Award Net Of Forfeitures StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures	0	USD
CY2020Q4	us-gaap	Stockholders Equity StockholdersEquity	552094000	USD
CY2020Q4	us-gaap	Noncontrolling Interest In Variable Interest Entity NoncontrollingInterestInVariableInterestEntity	6063000	USD
CY2020Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	558157000	USD
CY2020Q4	oii	Consolidation Less Than Wholly Owned Subsidiary Parent Ownership Interest Threhold For Consolidation Percentage ConsolidationLessThanWhollyOwnedSubsidiaryParentOwnershipInterestThreholdForConsolidationPercentage	0.50
CY2020	us-gaap	Use Of Estimates UseOfEstimates	<span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-style:italic;font-weight:700;line-height:120%">Use of Estimates.</span><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-style:italic;font-weight:400;line-height:120%"> </span><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:120%">The preparation of financial statements in conformity with accounting principles generally accepted in the United States (“U.S. GAAP”) requires that our management make estimates and assumptions that affect the reported amounts of assets and liabilities, disclosure of contingent assets and liabilities as of the date of the financial statements and the reported amounts of revenue and expense during the reporting period. Actual results could differ from those estimates.</span>
CY2020	us-gaap	Prior Period Reclassification Adjustment Description PriorPeriodReclassificationAdjustmentDescription	<div style="margin-top:9pt"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-style:italic;font-weight:700;line-height:120%">Recasting of Certain Prior Period Information.</span><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:120%"> In the third quarter of 2020, we changed our organizational structure as part of the transformation to realign our businesses to achieve greater cost efficiencies and to bring together business units that frequently work together and promote increased synergies in bidding, project management and the use of offshore technicians. As a result, information that our chief operating decision maker regularly reviews changed. Therefore, for the year ended December 31, 2020, we are reporting our financial results consistent with our newly realigned operating segments and have recast certain prior period amounts to conform to the way we now manage our businesses and monitor segment performance as described in Note 3–“Revenue” and Note 11–“Operations by Business Segment and Geographic Area.” We also changed our reporting units to realign with the changes in our operating segments and reassessed impairments for long-lived assets and goodwill as described in Note 5–“Impairments.”</span></div><div style="margin-top:9pt"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-style:italic;font-weight:700;line-height:120%">Reclassifications.</span><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:120%"> Certain amounts from prior periods have been reclassified to conform with the current year presentation.</span></div>
CY2020Q1	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	2.3	USD
CY2019Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	7500000	USD
CY2020Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	3900000	USD
CY2020Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	600000	USD
CY2020	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	11000000	USD
CY2020	oii	Percentage Of Reserved Allowance For Credit Loss PercentageOfReservedAllowanceForCreditLoss	-0.50
CY2020Q4	us-gaap	Interest Receivable InterestReceivable	1500000	USD
CY2020	us-gaap	Inventory Write Down InventoryWriteDown	7000000.0	USD
CY2019	us-gaap	Inventory Write Down InventoryWriteDown	21000000	USD
CY2020	us-gaap	Acquired Finite Lived Intangible Assets Weighted Average Useful Life AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife	P3Y
CY2019	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	3400000	USD
CY2018	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	7300000	USD
CY2018	us-gaap	Proceeds From Sale Of Other Investments ProceedsFromSaleOfOtherInvestments	15000000	USD
CY2018	us-gaap	Cost Method Investments Realized Gain Loss CostMethodInvestmentsRealizedGainLoss	9300000	USD
CY2020	oii	Percentageof Completion Percentof Revenue PercentageofCompletionPercentofRevenue	0.24
CY2019	oii	Percentageof Completion Percentof Revenue PercentageofCompletionPercentofRevenue	0.21
CY2019Q1	us-gaap	Stockholders Equity Other StockholdersEquityOther	-5900000	USD
CY2019Q1	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	185	USD
CY2019Q1	us-gaap	Operating Lease Liability OperatingLeaseLiability	191	USD
CY2020	oii	Operating Leases Operating Lease Term OperatingLeasesOperatingLeaseTerm	P15Y
CY2020	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-14000000	USD
CY2019	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-6300000	USD
CY2018	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-18000000	USD
CY2014Q4	us-gaap	Stock Repurchase Program Number Of Shares Authorized To Be Repurchased StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased	10000000	shares
CY2015	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	2000000.0	shares
CY2015	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	100000000	USD
CY2020Q4	us-gaap	Treasury Stock Common Shares TreasuryStockCommonShares	12000000	shares
CY2020	us-gaap	Revenues Revenues	1827889000	USD
CY2019	us-gaap	Revenues Revenues	2048124000	USD
CY2018	us-gaap	Revenues Revenues	1909482000	USD
CY2020	us-gaap	Revenues Revenues	1827889000	USD
CY2019	us-gaap	Revenues Revenues	2048124000	USD
CY2018	us-gaap	Revenues Revenues	1909482000	USD
CY2020	us-gaap	Revenues Revenues	1827889000	USD
CY2019	us-gaap	Revenues Revenues	2048124000	USD
CY2018	us-gaap	Revenues Revenues	1909482000	USD
CY2020Q4	us-gaap	Contract With Customer Asset Net Current ContractWithCustomerAssetNetCurrent	221997000	USD
CY2019Q4	us-gaap	Contract With Customer Asset Net Current ContractWithCustomerAssetNetCurrent	221288000	USD
CY2020Q4	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	50046000	USD
CY2019Q4	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	117342000	USD
CY2020	us-gaap	Contract With Customer Asset Reclassified To Receivable ContractWithCustomerAssetReclassifiedToReceivable	700000	USD
CY2020	us-gaap	Gross Transaction Volume GrossTransactionVolume	1700000000	USD
CY2020	us-gaap	Increase Decrease In Deferred Revenue IncreaseDecreaseInDeferredRevenue	67000000	USD
CY2020	us-gaap	Contract With Customer Liability Revenue Recognized ContractWithCustomerLiabilityRevenueRecognized	97000000	USD
CY2020	oii	Customer Payment Deferrals CustomerPaymentDeferrals	-30000000	USD
CY2020Q4	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	217000000	USD
CY2021Q4	oii	Revenue Recognitionfor Remaining Performance Obligations RevenueRecognitionforRemainingPerformanceObligations	173000000	USD
CY2020	oii	Revenue Recognitionfor Remaining Performance Obligationsinnext24months RevenueRecognitionforRemainingPerformanceObligationsinnext24months	44000000	USD
CY2020Q4	us-gaap	Capitalized Contract Cost Net CapitalizedContractCostNet	8300000	USD
CY2019Q4	us-gaap	Capitalized Contract Cost Net CapitalizedContractCostNet	15000000	USD
CY2020	us-gaap	Capitalized Contract Cost Amortization CapitalizedContractCostAmortization	-6600000	USD
CY2019	us-gaap	Capitalized Contract Cost Amortization CapitalizedContractCostAmortization	8500000	USD
CY2018	us-gaap	Capitalized Contract Cost Amortization CapitalizedContractCostAmortization	6500000	USD
CY2020Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	141206000	USD
CY2019Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	163238000	USD
CY2020Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	18798000	USD
CY2019Q1	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	19863000	USD
CY2020	us-gaap	Short Term Lease Cost ShortTermLeaseCost	52886000	USD
CY2020Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	156074000	USD
CY2019Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	160988000	USD
CY2020Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	174872000	USD
CY2019Q1	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	180851000	USD
CY2020Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P10Y
CY2019Q1	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P10Y
CY2020Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.061
CY2019Q1	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.062
CY2020	oii	Rightofuseassetimpairment Rightofuseassetimpairment	17000000	USD
CY2020	us-gaap	Operating Lease Cost OperatingLeaseCost	34030000	USD
CY2019	us-gaap	Operating Lease Cost OperatingLeaseCost	40310000	USD
CY2019	us-gaap	Short Term Lease Cost ShortTermLeaseCost	73005000	USD
CY2020	us-gaap	Lease Cost LeaseCost	86916000	USD
CY2019	us-gaap	Lease Cost LeaseCost	113315000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Rolling Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextRollingTwelveMonths	28892000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	26740000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	22342000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	19424000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	19110000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	122593000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	239101000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	64229000	USD
CY2020Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	174872000	USD
CY2019	us-gaap	Impairment Of Long Lived Assets Held For Use ImpairmentOfLongLivedAssetsHeldForUse	159353000	USD
CY2020	us-gaap	Asset Impairment Charges AssetImpairmentCharges	24000000	USD
CY2019	us-gaap	Asset Impairment Charges AssetImpairmentCharges	45000000	USD
CY2018	us-gaap	Asset Impairment Charges AssetImpairmentCharges	7700000	USD
CY2020Q1	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	303005000	USD
CY2020Q1	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	303005000	USD
CY2020Q3	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	76449000	USD
CY2020Q3	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	76449000	USD
CY2020Q1	us-gaap	Impairment Of Long Lived Assets Held For Use ImpairmentOfLongLivedAssetsHeldForUse	68763000	USD
CY2020Q1	us-gaap	Impairment Of Long Lived Assets Held For Use ImpairmentOfLongLivedAssetsHeldForUse	68763000	USD
CY2019	us-gaap	Impairment Of Long Lived Assets Held For Use ImpairmentOfLongLivedAssetsHeldForUse	159353000	USD
CY2020Q4	us-gaap	Other Inventory Net Of Reserves OtherInventoryNetOfReserves	78453000	USD
CY2019Q4	us-gaap	Other Inventory Net Of Reserves OtherInventoryNetOfReserves	98624000	USD
CY2020Q4	us-gaap	Inventory Net InventoryNet	141241000	USD
CY2019Q4	us-gaap	Inventory Net InventoryNet	174744000	USD
CY2020Q4	us-gaap	Prepaid Expense Current PrepaidExpenseCurrent	48616000	USD
CY2019Q4	us-gaap	Prepaid Expense Current PrepaidExpenseCurrent	43210000	USD
CY2020Q4	us-gaap	Available For Sale Securities Current AvailableForSaleSecuritiesCurrent	10179000	USD
CY2019Q4	us-gaap	Available For Sale Securities Current AvailableForSaleSecuritiesCurrent	10179000	USD
CY2020Q4	us-gaap	Other Assets Current OtherAssetsCurrent	58795000	USD
CY2019Q4	us-gaap	Other Assets Current OtherAssetsCurrent	53389000	USD
CY2020Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	14317000	USD
CY2019Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	25774000	USD
CY2020Q4	us-gaap	Fair Value Concentration Of Risk Cash Surrender Value FairValueConcentrationOfRiskCashSurrenderValue	39562000	USD
CY2019Q4	us-gaap	Fair Value Concentration Of Risk Cash Surrender Value FairValueConcentrationOfRiskCashSurrenderValue	50097000	USD
CY2020Q4	us-gaap	Equity Method Investments EquityMethodInvestments	34166000	USD
CY2019Q4	us-gaap	Equity Method Investments EquityMethodInvestments	37896000	USD
CY2020Q4	us-gaap	Other Assets Miscellaneous Noncurrent OtherAssetsMiscellaneousNoncurrent	20205000	USD
CY2019Q4	us-gaap	Other Assets Miscellaneous Noncurrent OtherAssetsMiscellaneousNoncurrent	37611000	USD
CY2020Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	108250000	USD
CY2019Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	151378000	USD
CY2020Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	135042000	USD
CY2019Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	137001000	USD
CY2020Q4	us-gaap	Accounts Payable Other Current AccountsPayableOtherCurrent	47721000	USD
CY2019Q4	us-gaap	Accounts Payable Other Current AccountsPayableOtherCurrent	54387000	USD
CY2020Q4	us-gaap	Accrued Income Taxes Current AccruedIncomeTaxesCurrent	35929000	USD
CY2019Q4	us-gaap	Accrued Income Taxes Current AccruedIncomeTaxesCurrent	36996000	USD
CY2020Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	18798000	USD
CY2019Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	19863000	USD
CY2020Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	55373000	USD
CY2019Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	89434000	USD
CY2018	us-gaap	Income Tax Reconciliation Repatriation Of Foreign Earnings IncomeTaxReconciliationRepatriationOfForeignEarnings	8800000	USD
CY2020Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	292863000	USD
CY2019Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	337681000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Gross Noncurrent DeferredTaxLiabilitiesGrossNoncurrent	2993000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Gross Noncurrent DeferredTaxLiabilitiesGrossNoncurrent	1126000	USD
CY2020Q4	us-gaap	Other Postretirement Benefits Payable Current And Noncurrent OtherPostretirementBenefitsPayableCurrentAndNoncurrent	33982000	USD
CY2019Q4	us-gaap	Other Postretirement Benefits Payable Current And Noncurrent OtherPostretirementBenefitsPayableCurrentAndNoncurrent	46244000	USD
CY2020Q4	us-gaap	Due To Employees Noncurrent DueToEmployeesNoncurrent	12640000	USD
CY2019Q4	us-gaap	Due To Employees Noncurrent DueToEmployeesNoncurrent	10381000	USD
CY2020Q4	us-gaap	Liability For Uncertain Tax Positions Noncurrent LiabilityForUncertainTaxPositionsNoncurrent	15010000	USD
CY2019Q4	us-gaap	Liability For Uncertain Tax Positions Noncurrent LiabilityForUncertainTaxPositionsNoncurrent	20949000	USD
CY2020Q4	us-gaap	Other Accrued Liabilities Noncurrent OtherAccruedLiabilitiesNoncurrent	24619000	USD
CY2019Q4	us-gaap	Other Accrued Liabilities Noncurrent OtherAccruedLiabilitiesNoncurrent	28094000	USD
CY2020Q4	us-gaap	Liabilities Other Than Longterm Debt Noncurrent LiabilitiesOtherThanLongtermDebtNoncurrent	89244000	USD
CY2019Q4	us-gaap	Liabilities Other Than Longterm Debt Noncurrent LiabilitiesOtherThanLongtermDebtNoncurrent	106794000	USD
CY2019	oii	Income Tax Business Credits IncomeTaxBusinessCredits	8200000	USD
CY2019	us-gaap	Income Tax Reconciliation Repatriation Of Foreign Earnings IncomeTaxReconciliationRepatriationOfForeignEarnings	600000	USD
CY2020	oii	Cares Act Tax Refund CARESActTaxRefund	33000000	USD
CY2020	us-gaap	Proceeds From Income Tax Refunds ProceedsFromIncomeTaxRefunds	5600000	USD
CY2020	oii	Noncash Income Tax Benefit NoncashIncomeTaxBenefit	8400000	USD
CY2020	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	-32743000	USD
CY2019	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	-7571000	USD
CY2018	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	-1564000	USD
CY2020	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	34755000	USD
CY2019	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	37462000	USD
CY2018	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	16146000	USD
CY2020	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	2012000	USD
CY2019	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	29891000	USD
CY2018	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	14582000	USD
CY2020	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-9192000	USD
CY2019	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-10860000	USD
CY2018	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-22905000	USD
CY2020	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	5034000	USD
CY2019	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-1408000	USD
CY2018	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	34817000	USD
CY2020	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-4158000	USD
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-12268000	USD
CY2018	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	11912000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-2146000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	17623000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	26494000	USD
CY2020	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	26264000	USD
CY2019	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	29806000	USD
CY2018	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	29737000	USD
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	-306354000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	-271515000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	-132138000	USD
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	-192543000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	-59306000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	-53695000	USD
CY2020	oii	Income Including Equity Affiliate Earnings Before Income Taxes IncomeIncludingEquityAffiliateEarningsBeforeIncomeTaxes	-498897000	USD
CY2019	oii	Income Including Equity Affiliate Earnings Before Income Taxes IncomeIncludingEquityAffiliateEarningsBeforeIncomeTaxes	-330821000	USD
CY2018	oii	Income Including Equity Affiliate Earnings Before Income Taxes IncomeIncludingEquityAffiliateEarningsBeforeIncomeTaxes	-185833000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Other DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsOther	16761000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Other DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsOther	15227000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Deferred Income DeferredTaxAssetsDeferredIncome	1958000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Deferred Income DeferredTaxAssetsDeferredIncome	4835000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Accrued Liabilities DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities	27864000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Accrued Liabilities DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities	25805000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	521757000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	199410000	USD
CY2020Q4	oii	Deferredtaxassetreserveslongtermoperatingleaseliabilities Deferredtaxassetreserveslongtermoperatingleaseliabilities	40417000	USD
CY2019Q4	oii	Deferredtaxassetreserveslongtermoperatingleaseliabilities Deferredtaxassetreserveslongtermoperatingleaseliabilities	50256000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Impairment Losses DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsImpairmentLosses	19357000	USD
CY2020Q4	oii	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Interest DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsInterest	27359000	USD
CY2019Q4	oii	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Interest DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsInterest	20352000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	14045000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	16152000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	669518000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	332037000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	592516000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	277258000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	77002000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	54779000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	1343000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	6237000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Investments DeferredTaxLiabilitiesInvestments	2348000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Investments DeferredTaxLiabilitiesInvestments	2156000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Leasing Arrangements DeferredTaxLiabilitiesLeasingArrangements	28519000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Leasing Arrangements DeferredTaxLiabilitiesLeasingArrangements	43734000	USD
CY2020Q4	oii	Deferred Tax Liabilities Interest DeferredTaxLiabilitiesInterest	47785000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	3778000	USD
CY2020Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	79995000	USD
CY2019Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	55905000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	2993000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	1126000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Gross Noncurrent DeferredTaxLiabilitiesGrossNoncurrent	2993000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Gross Noncurrent DeferredTaxLiabilitiesGrossNoncurrent	1126000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	2993000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	1126000	USD
CY2020Q4	us-gaap	Operating Loss Carryforwards OperatingLossCarryforwards	480000000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards Not Subject To Expiration DeferredTaxAssetsOperatingLossCarryforwardsNotSubjectToExpiration	163000000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards Subject To Expiration DeferredTaxAssetsOperatingLossCarryforwardsSubjectToExpiration	317000000	USD
CY2020Q4	us-gaap	Operating Loss Carryforwards Valuation Allowance OperatingLossCarryforwardsValuationAllowance	592000000	USD
CY2020Q4	oii	Foreign Deferred Tax Asset ForeignDeferredTaxAsset	269000000	USD
CY2019Q4	us-gaap	Valuation Allowances And Reserves Balance ValuationAllowancesAndReservesBalance	277258000	USD
CY2018Q4	us-gaap	Valuation Allowances And Reserves Balance ValuationAllowancesAndReservesBalance	203040000	USD
CY2017Q4	us-gaap	Valuation Allowances And Reserves Balance ValuationAllowancesAndReservesBalance	206586000	USD
CY2020	us-gaap	Valuation Allowance Deferred Tax Asset Change In Amount ValuationAllowanceDeferredTaxAssetChangeInAmount	-300748000	USD
CY2019	us-gaap	Valuation Allowance Deferred Tax Asset Change In Amount ValuationAllowanceDeferredTaxAssetChangeInAmount	-59596000	USD
CY2018	us-gaap	Valuation Allowance Deferred Tax Asset Change In Amount ValuationAllowanceDeferredTaxAssetChangeInAmount	-38415000	USD
CY2020	us-gaap	Valuation Allowances And Reserves Adjustments ValuationAllowancesAndReservesAdjustments	-14510000	USD
CY2019	us-gaap	Valuation Allowances And Reserves Adjustments ValuationAllowancesAndReservesAdjustments	-14622000	USD
CY2018	us-gaap	Valuation Allowances And Reserves Adjustments ValuationAllowancesAndReservesAdjustments	-14065000	USD
CY2018	us-gaap	Valuation Allowances And Reserves Deductions ValuationAllowancesAndReservesDeductions	56026000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	592516000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	277258000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	203040000	USD
CY2020	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	-104769000	USD
CY2019	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	-69472000	USD
CY2018	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	-39025000	USD
CY2019	oii	Effective Income Tax Rate Reconciliation Repatriation Tax EffectiveIncomeTaxRateReconciliationRepatriationTax	-8220000	USD
CY2018	oii	Effective Income Tax Rate Reconciliation Repatriation Tax EffectiveIncomeTaxRateReconciliationRepatriationTax	8790000	USD
CY2020	oii	Income Tax Reconciliation Cares Tax Act Net Operating Loss Carryback IncomeTaxReconciliationCARESTaxActNetOperatingLossCarryback	-4681000	USD
CY2020	oii	Income Tax Rate Reconciliation Permanent Differences IncomeTaxRateReconciliationPermanentDifferences	50435000	USD
CY2019	oii	Income Tax Rate Reconciliation Permanent Differences IncomeTaxRateReconciliationPermanentDifferences	0	USD
CY2018	oii	Income Tax Rate Reconciliation Permanent Differences IncomeTaxRateReconciliationPermanentDifferences	0	USD
CY2020	us-gaap	Valuation Allowances And Reserves Charged To Other Accounts ValuationAllowancesAndReservesChargedToOtherAccounts	46650000	USD
CY2019	us-gaap	Valuation Allowances And Reserves Charged To Other Accounts ValuationAllowancesAndReservesChargedToOtherAccounts	74553000	USD
CY2018	us-gaap	Valuation Allowances And Reserves Charged To Other Accounts ValuationAllowancesAndReservesChargedToOtherAccounts	38415000	USD
CY2020	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	6088000	USD
CY2019	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	18439000	USD
CY2018	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	475000	USD
CY2020	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	1032000	USD
CY2019	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	989000	USD
CY2018	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	2135000	USD
CY2020	oii	Effective Income Tax Rate Reconciliation Uncertain Tax Position EffectiveIncomeTaxRateReconciliationUncertainTaxPosition	-5939000	USD
CY2019	oii	Effective Income Tax Rate Reconciliation Uncertain Tax Position EffectiveIncomeTaxRateReconciliationUncertainTaxPosition	3046000	USD
CY2018	oii	Effective Income Tax Rate Reconciliation Uncertain Tax Position EffectiveIncomeTaxRateReconciliationUncertainTaxPosition	12644000	USD
CY2020	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	9038000	USD
CY2019	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-1712000	USD
CY2018	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	3060000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-2146000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	17623000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	26494000	USD
CY2020	oii	Unrecognized Tax Benefits Probability Threshold Of Realizing For Tax Benefits Recognition Minimum Percentage UnrecognizedTaxBenefitsProbabilityThresholdOfRealizingForTaxBenefitsRecognitionMinimumPercentage	50
CY2019Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	16911000	USD
CY2018Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	14971000	USD
CY2017Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	5339000	USD
CY2020	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	2229000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	3662000	USD
CY2018	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	445000	USD
CY2020	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	628000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	2835000	USD
CY2018	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	260000	USD
CY2020	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	1830000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	2060000	USD
CY2018	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	10540000	USD
CY2020	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	68000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	563000	USD
CY2018	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	0	USD
CY2020	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	188000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	384000	USD
CY2018	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	1093000	USD
CY2020Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	20086000	USD
CY2019Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	16911000	USD
CY2018Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	14971000	USD
CY2020	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Expense UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense	1200000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Expense UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense	1400000	USD
CY2020Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	4500000	USD
CY2019Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	5700000	USD
CY2020	oii	Uncertain Taxpositionstoberesolvedinnext12months UncertainTaxpositionstoberesolvedinnext12months	2000000.0	USD
CY2020Q4	us-gaap	Liability For Uncertain Tax Positions Noncurrent LiabilityForUncertainTaxPositionsNoncurrent	15000000	USD
CY2019Q4	us-gaap	Liability For Uncertain Tax Positions Noncurrent LiabilityForUncertainTaxPositionsNoncurrent	21000000	USD
CY2020	us-gaap	Revenues Revenues	1827889000	USD
CY2019	us-gaap	Revenues Revenues	2048124000	USD
CY2018	us-gaap	Revenues Revenues	1909482000	USD
CY2020	us-gaap	Other Cost Of Operating Revenue OtherCostOfOperatingRevenue	80804000	USD
CY2019	us-gaap	Other Cost Of Operating Revenue OtherCostOfOperatingRevenue	88384000	USD
CY2018	us-gaap	Other Cost Of Operating Revenue OtherCostOfOperatingRevenue	66960000	USD
CY2020	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	1663948000	USD
CY2019	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	1949880000	USD
CY2018	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	1780256000	USD
CY2020	us-gaap	Gross Profit GrossProfit	163941000	USD
CY2019	us-gaap	Gross Profit GrossProfit	98244000	USD
CY2018	us-gaap	Gross Profit GrossProfit	129226000	USD
CY2019Q4	us-gaap	Fair Value Hedge Assets At Fair Value FairValueHedgeAssetsAtFairValue	3235000	USD
CY2020Q4	us-gaap	Deferred Gain Loss On Discontinuation Of Fair Value Hedge DeferredGainLossOnDiscontinuationOfFairValueHedge	10870000	USD
CY2020Q4	us-gaap	Unamortized Debt Issuance Expense UnamortizedDebtIssuanceExpense	5619000	USD
CY2019Q4	us-gaap	Unamortized Debt Issuance Expense UnamortizedDebtIssuanceExpense	6719000	USD
CY2020Q4	us-gaap	Long Term Debt LongTermDebt	805251000	USD
CY2019Q4	us-gaap	Long Term Debt LongTermDebt	796516000	USD
CY2014Q4	us-gaap	Senior Notes SeniorNotes	500000000	USD
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CY2014Q4	us-gaap	Long Term Debt Percentage Bearing Fixed Interest Rate LongTermDebtPercentageBearingFixedInterestRate	0.04650
CY2018Q1	us-gaap	Senior Notes SeniorNotes	300000000	USD
CY2018Q1	us-gaap	Senior Notes SeniorNotes	300000000	USD
CY2018Q1	us-gaap	Long Term Debt Percentage Bearing Fixed Interest Rate LongTermDebtPercentageBearingFixedInterestRate	0.06000
CY2020Q4	oii	Line Of Credit Facility Available Additional Borrowing Capacity LineOfCreditFacilityAvailableAdditionalBorrowingCapacity	300000000	USD
CY2020Q4	us-gaap	Loans Payable To Bank LoansPayableToBank	300000000	USD
CY2020Q4	oii	Percentageofcommitmentoflenders Percentageofcommitmentoflenders	0.90
CY2020Q4	oii	Lineof Credit Facility Maximum Capitalization Ratio LineofCreditFacilityMaximumCapitalizationRatio	0.55
CY2020Q4	us-gaap	Derivative Amount Of Hedged Item DerivativeAmountOfHedgedItem	200000000	USD
CY2014Q4	us-gaap	Long Term Debt Percentage Bearing Fixed Interest Rate LongTermDebtPercentageBearingFixedInterestRate	0.0465
CY2014Q4	us-gaap	Long Term Debt Percentage Bearing Fixed Interest Rate LongTermDebtPercentageBearingFixedInterestRate	0.0465
CY2020Q1	us-gaap	Derivative Liability Notional Amount DerivativeLiabilityNotionalAmount	100000000	USD
CY2020Q1	us-gaap	Derivative Variable Interest Rate DerivativeVariableInterestRate	0.02426
CY2020Q1	us-gaap	Derivative Liability Notional Amount DerivativeLiabilityNotionalAmount	100000000	USD
CY2020Q1	us-gaap	Deferred Finance Costs Ownshare Lending Arrangement Issuance Costs Adjustment DeferredFinanceCostsOwnshareLendingArrangementIssuanceCostsAdjustment	13	USD
CY2020Q1	us-gaap	Deferred Finance Costs Ownshare Lending Arrangement Issuance Costs Adjustment DeferredFinanceCostsOwnshareLendingArrangementIssuanceCostsAdjustment	13	USD
CY2020	oii	Amortization Of Deferred Finance Cost AmortizationOfDeferredFinanceCost	2000000.0	USD
CY2020	us-gaap	Interest Paid InterestPaid	44000000	USD
CY2020Q4	us-gaap	Available For Sale Securities Current AvailableForSaleSecuritiesCurrent	10000000	USD
CY2020Q4	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	10000000	USD
CY2019	us-gaap	Interest Paid InterestPaid	46000000	USD
CY2019	us-gaap	Interest Paid InterestPaid	46000000	USD
CY2018	us-gaap	Interest Paid InterestPaid	37000000	USD
CY2020Q4	us-gaap	Letters Of Credit Outstanding Amount LettersOfCreditOutstandingAmount	51000000	USD
CY2019Q4	us-gaap	Letters Of Credit Outstanding Amount LettersOfCreditOutstandingAmount	49000000	USD
CY2020Q4	us-gaap	Notes Payable Fair Value Disclosure NotesPayableFairValueDisclosure	723000000	USD
CY2018	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	70000000	USD
CY2018	us-gaap	Payments To Acquire Available For Sale Securities PaymentsToAcquireAvailableForSaleSecurities	10000000	USD
CY2020Q4	oii	Accounts Receivable And Contract Assets AccountsReceivableAndContractAssets	51000000	USD
CY2020	us-gaap	Revenues Revenues	1827889000	USD
CY2019	us-gaap	Revenues Revenues	2048124000	USD
CY2018	us-gaap	Revenues Revenues	1909482000	USD
CY2020	us-gaap	Operating Income Loss OperatingIncomeLoss	-446079000	USD
CY2019	us-gaap	Operating Income Loss OperatingIncomeLoss	-290713000	USD
CY2018	us-gaap	Operating Income Loss OperatingIncomeLoss	-145482000	USD
CY2020	us-gaap	Depreciation And Amortization DepreciationAndAmortization	528895000	USD
CY2019	us-gaap	Depreciation And Amortization DepreciationAndAmortization	263427000	USD
CY2018	us-gaap	Depreciation And Amortization DepreciationAndAmortization	293590000	USD
CY2020	us-gaap	Concentration Risk Percentage1 ConcentrationRiskPercentage1	10
CY2019	us-gaap	Concentration Risk Percentage1 ConcentrationRiskPercentage1	0.10
CY2018	us-gaap	Concentration Risk Percentage1 ConcentrationRiskPercentage1	10
CY2020	us-gaap	Impairment Of Long Lived Assets Held For Use ImpairmentOfLongLivedAssetsHeldForUse	70445000	USD
CY2020	us-gaap	Impaired Assets To Be Disposed Of By Method Other Than Sale Amount Of Impairment Loss ImpairedAssetsToBeDisposedOfByMethodOtherThanSaleAmountOfImpairmentLoss	24142000	USD
CY2020	us-gaap	Inventory Write Down InventoryWriteDown	7038000	USD
CY2020	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	343880000	USD
CY2020	oii	Otheradjustmentsto Incomefromcontinuingoperations OtheradjustmentstoIncomefromcontinuingoperations	21210000	USD
CY2020	oii	Total Adjustments To Income From Continuing Operations TotalAdjustmentsToIncomeFromContinuingOperations	466715000	USD
CY2019	us-gaap	Impairment Of Long Lived Assets Held For Use ImpairmentOfLongLivedAssetsHeldForUse	159353000	USD
CY2019	us-gaap	Impaired Assets To Be Disposed Of By Method Other Than Sale Amount Of Impairment Loss ImpairedAssetsToBeDisposedOfByMethodOtherThanSaleAmountOfImpairmentLoss	44653000	USD
CY2019	us-gaap	Inventory Write Down InventoryWriteDown	21285000	USD
CY2019	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	14713000	USD
CY2019	oii	Otheradjustmentsto Incomefromcontinuingoperations OtheradjustmentstoIncomefromcontinuingoperations	11751000	USD
CY2019	oii	Total Adjustments To Income From Continuing Operations TotalAdjustmentsToIncomeFromContinuingOperations	251755000	USD
CY2018	us-gaap	Impairment Of Long Lived Assets Held For Use ImpairmentOfLongLivedAssetsHeldForUse	7691000	USD
CY2018	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	76449000	USD
CY2018	oii	Total Adjustments To Income From Continuing Operations TotalAdjustmentsToIncomeFromContinuingOperations	84140000	USD
CY2020	us-gaap	Depreciation Depreciation	170000000	USD
CY2019	us-gaap	Depreciation Depreciation	212000000	USD
CY2018	us-gaap	Depreciation Depreciation	200000000	USD
CY2020	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	15000000	USD
CY2019	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	36000000	USD
CY2018	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	18000000	USD
CY2018	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	18000000	USD
CY2018	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	18000000	USD
CY2020	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	344000000	USD
CY2019	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	15000000	USD
CY2018	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	76000000	USD
CY2020	oii	Writeoff Equipmentand Intangibles WriteoffEquipmentandIntangibles	14000000	USD
CY2019	oii	Writeoff Equipmentand Intangibles WriteoffEquipmentandIntangibles	45000000	USD
CY2018	oii	Writeoff Equipmentand Intangibles WriteoffEquipmentandIntangibles	4200000	USD
CY2020	us-gaap	Impairment Of Intangible Assets Finitelived ImpairmentOfIntangibleAssetsFinitelived	10000000	USD
CY2018	us-gaap	Impairment Of Intangible Assets Finitelived ImpairmentOfIntangibleAssetsFinitelived	3400000	USD
CY2020Q4	us-gaap	Assets Assets	2045842000	USD
CY2019Q4	us-gaap	Assets Assets	2740663000	USD
CY2020Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	591107000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	776532000	USD
CY2020Q4	us-gaap	Goodwill Goodwill	35016000	USD
CY2019Q4	us-gaap	Goodwill Goodwill	405079000	USD
CY2020	us-gaap	Property Plant And Equipment Additions PropertyPlantAndEquipmentAdditions	60687000	USD
CY2019	us-gaap	Property Plant And Equipment Additions PropertyPlantAndEquipmentAdditions	147684000	USD
CY2018	us-gaap	Property Plant And Equipment Additions PropertyPlantAndEquipmentAdditions	178038000	USD
CY2020	us-gaap	Revenues Revenues	1827889000	USD
CY2019	us-gaap	Revenues Revenues	2048124000	USD
CY2018	us-gaap	Revenues Revenues	1909482000	USD
CY2020Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	141000000	USD
CY2019Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	163000000	USD
CY2020Q4	us-gaap	Noncurrent Assets NoncurrentAssets	732313000	USD
CY2019Q4	us-gaap	Noncurrent Assets NoncurrentAssets	939770000	USD
CY2017Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber	1181805	shares
CY2017Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue	32.84
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod	653286	shares
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	18.05
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod	320147	shares
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue	47.62
CY2018	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Equity Instruments Other Than Options Aggregate Intrinsic Value Vested SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueVested	5993000	USD
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeited In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod	71047	shares
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeitures Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue	24.87
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber	1443897	shares
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue	23.27
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod	957734	shares
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	18.12
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod	495527	shares
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue	48.65
CY2019	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Equity Instruments Other Than Options Aggregate Intrinsic Value Vested SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueVested	8154000	USD
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeited In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod	164769	shares
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeitures Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue	22.86
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber	1741335	shares
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue	22.62
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod	1007383	shares
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	10.23
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod	489035	shares
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue	25.55
CY2020	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Equity Instruments Other Than Options Aggregate Intrinsic Value Vested SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueVested	5821000	USD
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeited In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod	304337	shares
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeitures Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue	18.13
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber	1955346	shares
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue	16.20
CY2020	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition1 EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1	P1Y7M6D

Files In Submission

Name	View Source	Status
0000073756-21-000023-index-headers.html	Edgar Link	pending
0000073756-21-000023-index.html	Edgar Link	pending
0000073756-21-000023.txt	Edgar Link	pending
0000073756-21-000023-xbrl.zip	Edgar Link	pending
FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xlsx	Edgar Link	pending
MetaLinks.json	Edgar Link	pending
oii-20201231.htm	Edgar Link	pending
oii-20201231.xsd	Edgar Link	pending
oii-20201231_cal.xml	Edgar Link	unprocessable
oii-20201231_def.xml	Edgar Link	unprocessable
oii-20201231_g1.jpg	Edgar Link	pending
oii-20201231_g2.jpg	Edgar Link	pending
oii-20201231_htm.xml	Edgar Link	completed
oii-20201231_lab.xml	Edgar Link	unprocessable
oii-20201231_pre.xml	Edgar Link	unprocessable
oii_exhibit1018x12312020.htm	Edgar Link	pending
oii_exhibit1019x12312020.htm	Edgar Link	pending
oii_exhibit2101x12312020.htm	Edgar Link	pending
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oii_exhibit3201x12312020.htm	Edgar Link	pending
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report.css	Edgar Link	pending
Show.js	Edgar Link	pending

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$OII
Oceaneering International Inc Stock $oii

2020 Form 10-K Financial Statement

#000007375621000023 Filed on February 26, 2021

Income Statement

Balance Sheet

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Facts In Submission

Files In Submission

$OII Oceaneering International Inc Stock $oii

2020 Form 10-K Financial Statement

#000007375621000023 Filed on February 26, 2021

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$OII
Oceaneering International Inc Stock $oii