$HLX
HELIX ENERGY SOLUTIONS GROUP INC Stock $hlx

$hlx Overview Financials Valuation SEC Filings Company Website

2019 Q4 Form 10-K Financial Statement

#000086682920000007 Filed on February 27, 2020

Income Statement

Concept	2019 Q4	2019	2018 Q4
Revenue	$170.7M	$751.9M	$158.4M
YoY Change	7.83%	1.63%	-3.01%
Cost Of Revenue	$144.2M	$614.1M	$144.5M
YoY Change	-0.21%	-0.66%	3.36%
Gross Profit	$26.58M	$137.8M	$13.81M
YoY Change	92.43%	13.28%	-41.19%
Gross Profit Margin	15.56%	18.33%	8.72%
Selling, General & Admin	$20.90M	$69.84M	$17.30M
YoY Change	20.81%	-0.63%	3.59%
% of Gross Profit	78.64%	50.67%	125.26%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$28.30M	$112.7M	$27.20M
YoY Change	4.04%	1.99%	4.62%
% of Gross Profit	106.49%	81.78%	196.94%
Operating Expenses	$20.90M	$69.84M	$17.30M
YoY Change	20.81%	-0.63%	3.59%
Operating Profit	$5.676M	$68.00M	-$3.489M
YoY Change	-262.68%	31.92%	-151.44%
Interest Expense	-$600.0K	$31.19M	-$7.400M
YoY Change	-91.89%	-4.39%	25.42%
% of Operating Profit	-10.57%	45.86%
Other Income/Expense, Net	$4.000M	$1.165M	-$1.700M
YoY Change	-335.29%	-118.42%	-525.0%
Pretax Income	$9.100M	$65.56M	-$12.60M
YoY Change	-172.22%	111.48%	-1069.23%
Income Tax	$1.100M	$7.859M	$1.200M
% Of Pretax Income	12.09%	11.99%
Net Earnings	$8.052M	$57.92M	-$13.75M
YoY Change	-158.57%	102.53%	-127.18%
Net Earnings / Revenue	4.72%	7.7%	-8.68%
Basic Earnings Per Share	$0.05	$0.39	-$0.09
Diluted Earnings Per Share	$0.05	$0.38	-$0.09
COMMON SHARES
Basic Shares Outstanding	148.8M shares	147.5M	148.2M shares
Diluted Shares Outstanding		149.6M

Balance Sheet

Concept	2019 Q4	2019	2018 Q4
SHORT-TERM ASSETS
Cash & Short-Term Investments	$208.4M	$208.4M	$279.5M
YoY Change	-25.44%	-25.44%	4.84%
Cash & Equivalents	$208.4M	$208.4M	$279.5M
Short-Term Investments
Other Short-Term Assets	$50.45M	$103.8M	$51.59M
YoY Change	-2.22%	126.64%	23.53%
Inventory
Prepaid Expenses	$12.64M		$10.31M
Receivables	$125.5M	$126.2M	$67.93M
Other Receivables	$0.00	$0.00	$0.00
Total Short-Term Assets	$438.5M	$438.5M	$450.9M
YoY Change	-2.76%	-2.75%	-0.16%
LONG-TERM ASSETS
Property, Plant & Equipment	$1.873B	$2.074B	$1.827B
YoY Change	2.51%	13.53%	1.15%
Goodwill	$7.157M		$0.00
YoY Change
Intangibles
YoY Change
Long-Term Investments
YoY Change
Other Assets	$84.51M	$46.20M	$70.06M
YoY Change	20.63%	-34.09%	-33.41%
Total Long-Term Assets	$2.158B	$2.158B	$1.897B
YoY Change	13.78%	13.78%	-0.75%
TOTAL ASSETS
Total Short-Term Assets	$438.5M	$438.5M	$450.9M
Total Long-Term Assets	$2.158B	$2.158B	$1.897B
Total Assets	$2.597B	$2.597B	$2.348B
YoY Change	10.61%	10.61%	-0.64%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$69.06M	$69.10M	$54.81M
YoY Change	25.98%	26.09%	-32.58%
Accrued Expenses	$62.39M	$103.2M	$85.59M
YoY Change	-27.11%	71.14%	19.41%
Deferred Revenue	$11.57M		$10.10M
YoY Change	14.5%		-19.87%
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due	$99.73M	$99.70M	$47.25M
YoY Change	111.06%	110.78%	-56.99%
Total Short-Term Liabilities	$285.0M	$285.0M	$191.5M
YoY Change	48.81%	48.83%	-27.91%
LONG-TERM LIABILITIES
Long-Term Debt	$306.1M	$306.1M	$393.1M
YoY Change	-22.12%	-22.13%	1.89%
Other Long-Term Liabilities	$38.64M	$190.5M	$39.54M
YoY Change	-2.26%	382.28%	-2.83%
Total Long-Term Liabilities	$344.8M	$496.6M	$432.6M
YoY Change	-20.3%	14.79%	1.44%
TOTAL LIABILITIES
Total Short-Term Liabilities	$285.0M	$285.0M	$191.5M
Total Long-Term Liabilities	$344.8M	$496.6M	$432.6M
Total Liabilities	$893.7M	$897.1M	$730.0M
YoY Change	22.43%	22.89%	-8.23%
SHAREHOLDERS EQUITY
Retained Earnings	$445.4M		$383.0M
YoY Change	16.27%		8.54%
Common Stock	$1.319B		$1.309B
YoY Change	0.78%		1.9%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$1.700B	$1.700B	$1.618B
YoY Change
Total Liabilities & Shareholders Equity	$2.597B	$2.597B	$2.348B
YoY Change	10.61%	10.61%	-0.64%

Cashflow Statement

Concept	2019 Q4	2019	2018 Q4
OPERATING ACTIVITIES
Net Income	$8.052M	$57.92M	-$13.75M
YoY Change	-158.57%	102.53%	-127.18%
Depreciation, Depletion And Amortization	$28.30M	$112.7M	$27.20M
YoY Change	4.04%	1.99%	4.62%
Cash From Operating Activities	$79.80M	$169.7M	$45.90M
YoY Change	73.86%	-13.76%	126.11%
INVESTING ACTIVITIES
Capital Expenditures	-$95.30M	-$140.9M	-$81.70M
YoY Change	16.65%	2.77%	-18.05%
Acquisitions		$4.081M
YoY Change
Other Investing Activities	$0.00	$0.00	$1.100M
YoY Change	-100.0%	-100.0%
Cash From Investing Activities	-$95.20M	-$142.4M	-$80.60M
YoY Change	18.11%	4.68%	-19.16%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net		$0.00
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-10.20M	-45.82M	-10.20M
YoY Change	0.0%	-0.8%	-6.42%
NET CHANGE
Cash From Operating Activities	79.80M	169.7M	45.90M
Cash From Investing Activities	-95.20M	-142.4M	-80.60M
Cash From Financing Activities	-10.20M	-45.82M	-10.20M
Net Change In Cash	-25.60M	-16.90M	-44.90M
YoY Change	-42.98%	-231.33%	-50.28%
FREE CASH FLOW
Cash From Operating Activities	$79.80M	$169.7M	$45.90M
Capital Expenditures	-$95.30M	-$140.9M	-$81.70M
Free Cash Flow	$175.1M	$310.6M	$127.6M
YoY Change	37.23%	-6.97%	6.33%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
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CY2019	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2019	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2019	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2019
CY2019	dei	Entity Central Index Key EntityCentralIndexKey	0000866829
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CY2018Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	240000000	shares
CY2019Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	240000000	shares
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CY2019Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	148888000	shares
CY2017Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	300000	USD
CY2019	dei	Document Type DocumentType	10-K
CY2019	dei	Document Annual Report DocumentAnnualReport	true
CY2019	dei	Document Period End Date DocumentPeriodEndDate	2019-12-31
CY2019	dei	Document Transition Report DocumentTransitionReport	false
CY2019	dei	Entity File Number EntityFileNumber	001-32936
CY2019	dei	Entity Registrant Name EntityRegistrantName	HELIX ENERGY SOLUTIONS GROUP, INC.
CY2019	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	MN
CY2019	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	95-3409686
CY2019	dei	Entity Address Address Line1 EntityAddressAddressLine1	3505 West Sam Houston Parkway North
CY2019	dei	Entity Address Address Line2 EntityAddressAddressLine2	Suite 400
CY2019	dei	Entity Address City Or Town EntityAddressCityOrTown	Houston
CY2019	dei	Entity Address State Or Province EntityAddressStateOrProvince	TX
CY2019	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	77043
CY2019	dei	City Area Code CityAreaCode	281
CY2019	dei	Local Phone Number LocalPhoneNumber	618-0400
CY2019	dei	Security12b Title Security12bTitle	Common Stock
CY2019	dei	Trading Symbol TradingSymbol	HLX
CY2019	dei	Security Exchange Name SecurityExchangeName	NYSE
CY2019	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2019	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2019	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2019	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2019	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2019	dei	Entity Small Business EntitySmallBusiness	false
CY2019	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2019	dei	Entity Shell Company EntityShellCompany	false
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CY2017	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	10514000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Before Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeTax	0	USD
CY2018	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Before Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeTax	-629000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Before Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeTax	629000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax	0	USD
CY2018	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax	-132000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax	220000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	0	USD
CY2018	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-497000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	409000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	5400000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-7166000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	16264000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	9224000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-2647000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	27187000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	66921000	USD
CY2018	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	25951000	USD
CY2017	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	57239000	USD
CY2019	us-gaap	Net Income Loss Attributable To Redeemable Noncontrolling Interest NetIncomeLossAttributableToRedeemableNoncontrollingInterest	-222000	USD
CY2018	us-gaap	Net Income Loss Attributable To Redeemable Noncontrolling Interest NetIncomeLossAttributableToRedeemableNoncontrollingInterest	0	USD
CY2017	us-gaap	Net Income Loss Attributable To Redeemable Noncontrolling Interest NetIncomeLossAttributableToRedeemableNoncontrollingInterest	0	USD
CY2019	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Noncontrolling Interest OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToNoncontrollingInterest	138000	USD
CY2018	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Noncontrolling Interest OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToNoncontrollingInterest	0	USD
CY2017	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Noncontrolling Interest OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToNoncontrollingInterest	0	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	-84000	USD
CY2018	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	0	USD
CY2017	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	0	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	67005000	USD
CY2018	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	25951000	USD
CY2017	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	57239000	USD
CY2016Q4	us-gaap	Stockholders Equity StockholdersEquity	1281814000	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	30052000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	16264000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	10514000	USD
CY2017	us-gaap	Adjustments To Additional Paid In Capital Equity Component Of Convertible Debt AdjustmentsToAdditionalPaidInCapitalEquityComponentOfConvertibleDebt	-7000	USD
CY2017	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	219504000	USD
CY2017	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	-1887000	USD
CY2017	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	10730000	USD
CY2017Q4	us-gaap	Stockholders Equity StockholdersEquity	1567393000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	28598000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-7166000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	5016000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-497000	USD
CY2018	us-gaap	Adjustments To Additional Paid In Capital Equity Component Of Convertible Debt AdjustmentsToAdditionalPaidInCapitalEquityComponentOfConvertibleDebt	15411000	USD
CY2018	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	-746000	USD
CY2018	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	9770000	USD
CY2018Q4	us-gaap	Stockholders Equity StockholdersEquity	1617779000	USD
CY2018Q4	us-gaap	Redeemable Noncontrolling Interest Equity Carrying Amount RedeemableNoncontrollingInterestEquityCarryingAmount	0	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	57919000	USD
CY2019	us-gaap	Net Income Loss Attributable To Redeemable Noncontrolling Interest NetIncomeLossAttributableToRedeemableNoncontrollingInterest	-222000	USD
CY2019	hlx	Reclassification Of Deferred Gain From Sale And Leaseback Transaction To Retained Earnings ReclassificationOfDeferredGainFromSaleAndLeasebackTransactionToRetainedEarnings	4560000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	5400000	USD
CY2019	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Noncontrolling Interest OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToNoncontrollingInterest	138000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	3824000	USD
CY2019	us-gaap	Noncontrolling Interest Increase From Subsidiary Equity Issuance NoncontrollingInterestIncreaseFromSubsidiaryEquityIssuance	3396000	USD
CY2019	hlx	Accretion Of Redeemable Noncontrolling Interests AccretionOfRedeemableNoncontrollingInterests	143000	USD
CY2019	us-gaap	Temporary Equity Accretion To Redemption Value TemporaryEquityAccretionToRedemptionValue	143000	USD
CY2019	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	-1032000	USD
CY2019	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	11284000	USD
CY2019Q4	us-gaap	Stockholders Equity StockholdersEquity	1699591000	USD
CY2019Q4	us-gaap	Redeemable Noncontrolling Interest Equity Carrying Amount RedeemableNoncontrollingInterestEquityCarryingAmount	3455000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	57697000	USD
CY2018	us-gaap	Profit Loss ProfitLoss	28598000	USD
CY2017	us-gaap	Profit Loss ProfitLoss	30052000	USD
CY2019	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	112720000	USD
CY2018	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	110522000	USD
CY2017	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	108745000	USD
CY2019	us-gaap	Amortization Of Debt Discount Premium AmortizationOfDebtDiscountPremium	6261000	USD
CY2018	us-gaap	Amortization Of Debt Discount Premium AmortizationOfDebtDiscountPremium	5735000	USD
CY2017	us-gaap	Amortization Of Debt Discount Premium AmortizationOfDebtDiscountPremium	4688000	USD
CY2019	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	3600000	USD
CY2018	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	3592000	USD
CY2017	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	6154000	USD
CY2019	us-gaap	Share Based Compensation ShareBasedCompensation	11469000	USD
CY2018	us-gaap	Share Based Compensation ShareBasedCompensation	9925000	USD
CY2017	us-gaap	Share Based Compensation ShareBasedCompensation	10877000	USD
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	3485000	USD
CY2018	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-2430000	USD
CY2017	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-54585000	USD
CY2019	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	1439000	USD
CY2018	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-3918000	USD
CY2017	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-2368000	USD
CY2019	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	0	USD
CY2018	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	146000	USD
CY2017	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	-39000	USD
CY2019	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-18000	USD
CY2018	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-1183000	USD
CY2017	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-397000	USD
CY2019	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	3383000	USD
CY2018	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	2324000	USD
CY2017	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	4423000	USD
CY2019	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	3050000	USD
CY2018	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	-20920000	USD
CY2017	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	28424000	USD
CY2019	us-gaap	Increase Decrease In Other Current Assets IncreaseDecreaseInOtherCurrentAssets	-25383000	USD
CY2018	us-gaap	Increase Decrease In Other Current Assets IncreaseDecreaseInOtherCurrentAssets	9904000	USD
CY2017	us-gaap	Increase Decrease In Other Current Assets IncreaseDecreaseInOtherCurrentAssets	15680000	USD
CY2019	us-gaap	Increase Decrease In Income Taxes Payable Net Of Income Taxes Receivable IncreaseDecreaseInIncomeTaxesPayableNetOfIncomeTaxesReceivable	-4456000	USD
CY2018	us-gaap	Increase Decrease In Income Taxes Payable Net Of Income Taxes Receivable IncreaseDecreaseInIncomeTaxesPayableNetOfIncomeTaxesReceivable	964000	USD
CY2017	us-gaap	Increase Decrease In Income Taxes Payable Net Of Income Taxes Receivable IncreaseDecreaseInIncomeTaxesPayableNetOfIncomeTaxesReceivable	3949000	USD
CY2019	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	-31893000	USD
CY2018	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	-352000	USD
CY2017	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	33381000	USD
CY2019	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	6743000	USD
CY2018	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	-26543000	USD
CY2017	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	45900000	USD
CY2019	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	169669000	USD
CY2018	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	196744000	USD
CY2017	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	51638000	USD
CY2019	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	140854000	USD
CY2017	hlx	Repayments Of Long Term Secured Debt RepaymentsOfLongTermSecuredDebt	6222000	USD
CY2019	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	1586000	USD
CY2017	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	219504000	USD
CY2018	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	3867000	USD
CY2017	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	3717000	USD
CY2018	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	137083000	USD
CY2017	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	231127000	USD
CY2019	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	4081000	USD
CY2018	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	0	USD
CY2017	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	0	USD
CY2019	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	2550000	USD
CY2018	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	25000	USD
CY2017	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	10000000	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	-1044000	USD
CY2017	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	0	USD
CY2019	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-142385000	USD
CY2018	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-136014000	USD
CY2017	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-221127000	USD
CY2019	us-gaap	Proceeds From Convertible Debt ProceedsFromConvertibleDebt	0	USD
CY2018	us-gaap	Proceeds From Convertible Debt ProceedsFromConvertibleDebt	125000000	USD
CY2017	us-gaap	Proceeds From Convertible Debt ProceedsFromConvertibleDebt	0	USD
CY2019	us-gaap	Repayments Of Convertible Debt RepaymentsOfConvertibleDebt	0	USD
CY2018	us-gaap	Repayments Of Convertible Debt RepaymentsOfConvertibleDebt	60365000	USD
CY2017	us-gaap	Repayments Of Convertible Debt RepaymentsOfConvertibleDebt	0	USD
CY2019	us-gaap	Proceeds From Issuance Of Other Long Term Debt ProceedsFromIssuanceOfOtherLongTermDebt	35000000	USD
CY2018	us-gaap	Proceeds From Issuance Of Other Long Term Debt ProceedsFromIssuanceOfOtherLongTermDebt	0	USD
CY2017	us-gaap	Proceeds From Issuance Of Other Long Term Debt ProceedsFromIssuanceOfOtherLongTermDebt	100000000	USD
CY2019	us-gaap	Repayments Of Other Long Term Debt RepaymentsOfOtherLongTermDebt	35442000	USD
CY2018	us-gaap	Repayments Of Other Long Term Debt RepaymentsOfOtherLongTermDebt	63807000	USD
CY2017	us-gaap	Repayments Of Other Long Term Debt RepaymentsOfOtherLongTermDebt	194758000	USD
CY2019	us-gaap	Repayments Of Secured Debt RepaymentsOfSecuredDebt	35714000	USD
CY2018	us-gaap	Repayments Of Secured Debt RepaymentsOfSecuredDebt	35714000	USD
CY2017	us-gaap	Repayments Of Secured Debt RepaymentsOfSecuredDebt	35715000	USD
CY2019	hlx	Repayments Of Long Term Secured Debt RepaymentsOfLongTermSecuredDebt	6858000	USD
CY2018	hlx	Repayments Of Long Term Secured Debt RepaymentsOfLongTermSecuredDebt	6532000	USD
CY2019	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	0	USD
CY2018	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	0	USD
CY2019	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	1680000	USD
CY2018	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	1407000	USD
CY2019	us-gaap	Proceeds From Stock Plans ProceedsFromStockPlans	462000	USD
CY2017	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	2042000	USD
CY2018	us-gaap	Proceeds From Stock Plans ProceedsFromStockPlans	506000	USD
CY2017	us-gaap	Proceeds From Stock Plans ProceedsFromStockPlans	432000	USD
CY2019	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-45818000	USD
CY2018	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-46186000	USD
CY2017	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	77482000	USD
CY2019	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1636000	USD
CY2018	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	-1677000	USD
CY2017	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1952000	USD
CY2019	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-16898000	USD
CY2018	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	12867000	USD
CY2017	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-90055000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	279459000	USD
CY2017Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	266592000	USD
CY2016Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	356647000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	262561000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	279459000	USD
CY2017Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	266592000	USD
CY2019	us-gaap	Nature Of Operations NatureOfOperations	<div style="line-height:120%;padding-top:13px;text-align:justify;font-size:10pt;"><span style="font-family:Arial;font-size:10pt;font-weight:bold;">Note 1 — Organization</span></div><div style="line-height:120%;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"> </span></div><div style="line-height:120%;text-align:left;text-indent:48px;font-size:10pt;"><span style="font-family:Arial;font-size:10pt;">Unless the context indicates otherwise, the terms “we,” “us” and “our” in this Annual Report refer collectively to Helix Energy Solutions Group, Inc. and its subsidiaries (“Helix” or the “Company”). We are an international offshore energy services company that provides specialty services to the offshore energy industry, with a focus on well intervention and robotics operations. We provide services primarily in deepwater in the Gulf of Mexico, Brazil, North Sea, Asia Pacific and West Africa regions.</span></div><div style="line-height:120%;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"> </span></div><div style="line-height:120%;text-align:left;font-size:10pt;"><span style="font-family:Arial;font-size:10pt;font-style:italic;font-weight:bold;">Our Operations</span></div><div style="line-height:120%;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"> </span></div><div style="line-height:120%;text-align:left;text-indent:48px;font-size:10pt;"><span style="font-family:Arial;font-size:10pt;">We provide services and methodologies that we believe are critical to maximizing production economics. Our life of field services are segregated into </span><span style="font-family:Arial;font-size:10pt;"><span>three</span></span><span style="font-family:Arial;font-size:10pt;"> reportable business segments: Well Intervention, Robotics and Production Facilities (Note 15).</span></div><div style="line-height:120%;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"> </span></div><div style="line-height:120%;text-align:left;text-indent:48px;font-size:10pt;"><span style="font-family:Arial;font-size:10pt;">Our Well Intervention segment includes our vessels and/or equipment used to perform well intervention services primarily in the Gulf of Mexico, Brazil, the North Sea and West Africa. Our well intervention vessels include the </span><span style="font-family:Arial;font-size:10pt;font-style:italic;">Q4000</span><span style="font-family:Arial;font-size:10pt;">, the </span><span style="font-family:Arial;font-size:10pt;font-style:italic;">Q5000</span><span style="font-family:Arial;font-size:10pt;">, the </span><span style="font-family:Arial;font-size:10pt;font-style:italic;">Q7000</span><span style="font-family:Arial;font-size:10pt;">, the </span><span style="font-family:Arial;font-size:10pt;font-style:italic;">Seawell</span><span style="font-family:Arial;font-size:10pt;">, the </span><span style="font-family:Arial;font-size:10pt;font-style:italic;">Well Enhancer</span><span style="font-family:Arial;font-size:10pt;">, and </span><span style="font-family:Arial;font-size:10pt;"><span>two</span></span><span style="font-family:Arial;font-size:10pt;"> chartered monohull vessels, the </span><span style="font-family:Arial;font-size:10pt;font-style:italic;">Siem Helix</span><span style="font-family:Arial;font-size:10pt;"> </span><span style="font-family:Arial;font-size:10pt;font-style:italic;">1</span><span style="font-family:Arial;font-size:10pt;"> and the </span><span style="font-family:Arial;font-size:10pt;font-style:italic;">Siem Helix</span><span style="font-family:Arial;font-size:10pt;"> </span><span style="font-family:Arial;font-size:10pt;font-style:italic;">2</span><span style="font-family:Arial;font-size:10pt;">. Our well intervention equipment includes intervention riser systems (“IRSs”) and subsea intervention lubricators (“SILs”), some of which we provide on a stand-alone basis.</span></div><div style="line-height:120%;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"> </span></div><div style="line-height:120%;text-align:left;text-indent:48px;font-size:10pt;"><span style="font-family:Arial;font-size:10pt;">Our Robotics segment includes remotely operated vehicles (“ROVs”), trenchers and a ROVDrill, which are designed to complement offshore construction and well intervention services, and </span><span style="font-family:Arial;font-size:10pt;"><span>two</span></span><span style="font-family:Arial;font-size:10pt;"> robotics support vessels under long-term charter: the </span><span style="font-family:Arial;font-size:10pt;font-style:italic;">Grand Canyon II</span><span style="font-family:Arial;font-size:10pt;"> and the </span><span style="font-family:Arial;font-size:10pt;font-style:italic;">Grand Canyon III</span><span style="font-family:Arial;font-size:10pt;">. We also utilize spot vessels as needed, including the </span><span style="font-family:Arial;font-size:10pt;font-style:italic;">Ross Candies</span><span style="font-family:Arial;font-size:10pt;">, which is under a flexible charter agreement. The </span><span style="font-family:Arial;font-size:10pt;font-style:italic;">Grand Canyon</span><span style="font-family:Arial;font-size:10pt;"> charter terminated in November 2019.</span></div><div style="line-height:120%;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"> </span></div><div style="line-height:120%;text-align:left;text-indent:48px;font-size:10pt;"><span style="font-family:Arial;font-size:10pt;">Our Production Facilities segment includes the </span><span style="font-family:Arial;font-size:10pt;font-style:italic;">Helix Producer</span><span style="font-family:Arial;font-size:10pt;"> </span><span style="font-family:Arial;font-size:10pt;font-style:italic;">I</span><span style="font-family:Arial;font-size:10pt;"> (the “</span><span style="font-family:Arial;font-size:10pt;font-style:italic;">HP I</span><span style="font-family:Arial;font-size:10pt;">”), a ship-shaped dynamically positioned floating production vessel, the Helix Fast Response System (the “HFRS”), our ownership interest in Independence Hub, LLC (“Independence Hub”) (Note 5), and our ownership of oil and gas properties acquired from Marathon Oil Corporation (“Marathon Oil”) in January 2019 (Note 8). All of our current production facilities activities are located in the Gulf of Mexico.</span></div><div style="line-height:120%;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"> </span></div><div style="line-height:120%;text-indent:48px;font-size:10pt;"><span style="font-family:Arial;font-size:10pt;">On May 29, 2019, we acquired a </span><span style="font-family:Arial;font-size:10pt;"><span>70%</span></span><span style="font-family:Arial;font-size:10pt;"> controlling interest in Subsea Technologies Group Limited (“STL”), a subsea engineering firm based in Aberdeen, Scotland, for </span><span style="font-family:Arial;font-size:10pt;"><span>$5.1 million</span></span><span style="font-family:Arial;font-size:10pt;">, including </span><span style="font-family:Arial;font-size:10pt;"><span>$4.1 million</span></span><span style="font-family:Arial;font-size:10pt;"> in cash and </span><span style="font-family:Arial;font-size:10pt;"><span>$1.0 million</span></span><span style="font-family:Arial;font-size:10pt;"> that we loaned to STL in December 2018. The acquisition is expected to strengthen our supply of subsea intervention systems. The holders of the remaining </span><span style="font-family:Arial;font-size:10pt;"><span>30%</span></span><span style="font-family:Arial;font-size:10pt;"> noncontrolling interest have the right to put their shares to us in June 2024. These redeemable noncontrolling interests have been recognized as temporary equity at their estimated fair value of </span><span style="font-family:Arial;font-size:10pt;"><span>$3.4 million</span></span><span style="font-family:Arial;font-size:10pt;"> at the acquisition date. We recognized </span><span style="font-family:Arial;font-size:10pt;"><span>$2.4 million</span></span><span style="font-family:Arial;font-size:10pt;"> of identifiable intangible assets and </span><span style="font-family:Arial;font-size:10pt;"><span>$6.9 million</span></span><span style="font-family:Arial;font-size:10pt;"> of goodwill, which are reflected in “Other assets” in the accompanying consolidated balance sheet (Note 3). Goodwill is related to the synergies expected from the acquisition. STL is included in our Well Intervention segment and its revenue and earnings are immaterial to our consolidated results.</span></div>
CY2019	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	3	segment
CY2019	us-gaap	Use Of Estimates UseOfEstimates	<div style="line-height:120%;text-align:left;font-size:10pt;"><span style="font-family:Arial;font-size:10pt;font-style:italic;font-weight:bold;">Use of Estimates</span></div><div style="line-height:120%;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"> </span></div><div style="line-height:120%;text-align:left;text-indent:48px;font-size:10pt;"><span style="font-family:Arial;font-size:10pt;">The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosures of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results may differ from those estimates.</span></div>
CY2019Q4	hlx	Deferred Recertification And Dry Dock Costs Net DeferredRecertificationAndDryDockCostsNet	16100000	USD
CY2018Q4	hlx	Deferred Recertification And Dry Dock Costs Net DeferredRecertificationAndDryDockCostsNet	8500000	USD
CY2019Q4	hlx	Accumulated Amortization Deferred Recertification And Dry Dock Costs AccumulatedAmortizationDeferredRecertificationAndDryDockCosts	15700000	USD
CY2018Q4	hlx	Accumulated Amortization Deferred Recertification And Dry Dock Costs AccumulatedAmortizationDeferredRecertificationAndDryDockCosts	15400000	USD
CY2019	hlx	Recertification And Dry Dock Amortization Expense RecertificationAndDryDockAmortizationExpense	12400000	USD
CY2018	hlx	Recertification And Dry Dock Amortization Expense RecertificationAndDryDockAmortizationExpense	8300000	USD
CY2017	hlx	Recertification And Dry Dock Amortization Expense RecertificationAndDryDockAmortizationExpense	7000000.0	USD
CY2019	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	1500000	USD
CY2018	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-4300000	USD
CY2017	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-2200000	USD
CY2019	us-gaap	Variable Lease Cost VariableLeaseCost	13780000	USD
CY2019Q4	us-gaap	Contract With Customer Asset Net Current ContractWithCustomerAssetNetCurrent	740000	USD
CY2018Q4	us-gaap	Contract With Customer Asset Net Current ContractWithCustomerAssetNetCurrent	5829000	USD
CY2019Q4	us-gaap	Prepaid Expense Current PrepaidExpenseCurrent	11526000	USD
CY2018Q4	us-gaap	Prepaid Expense Current PrepaidExpenseCurrent	10306000	USD
CY2019Q4	us-gaap	Capitalized Contract Cost Net Current CapitalizedContractCostNetCurrent	28340000	USD
CY2018Q4	us-gaap	Capitalized Contract Cost Net Current CapitalizedContractCostNetCurrent	27368000	USD
CY2019Q4	us-gaap	Other Assets Miscellaneous Current OtherAssetsMiscellaneousCurrent	9844000	USD
CY2018Q4	us-gaap	Other Assets Miscellaneous Current OtherAssetsMiscellaneousCurrent	8091000	USD
CY2019Q4	us-gaap	Other Assets Current OtherAssetsCurrent	50450000	USD
CY2018Q4	us-gaap	Other Assets Current OtherAssetsCurrent	51594000	USD
CY2019Q4	us-gaap	Prepaid Expense Noncurrent PrepaidExpenseNoncurrent	777000	USD
CY2018Q4	us-gaap	Prepaid Expense Noncurrent PrepaidExpenseNoncurrent	5896000	USD
CY2019Q4	hlx	Deferred Recertification And Dry Dock Costs Net DeferredRecertificationAndDryDockCostsNet	16065000	USD
CY2018Q4	hlx	Deferred Recertification And Dry Dock Costs Net DeferredRecertificationAndDryDockCostsNet	8525000	USD
CY2019Q4	us-gaap	Capitalized Contract Cost Net Noncurrent CapitalizedContractCostNetNoncurrent	14531000	USD
CY2018Q4	us-gaap	Capitalized Contract Cost Net Noncurrent CapitalizedContractCostNetNoncurrent	38574000	USD
CY2019Q4	us-gaap	Deposits Assets Noncurrent DepositsAssetsNoncurrent	12544000	USD
CY2018Q4	us-gaap	Deposits Assets Noncurrent DepositsAssetsNoncurrent	12544000	USD
CY2019Q4	us-gaap	Nontrade Receivables Noncurrent NontradeReceivablesNoncurrent	27264000	USD
CY2018Q4	us-gaap	Nontrade Receivables Noncurrent NontradeReceivablesNoncurrent	0	USD
CY2019Q4	us-gaap	Goodwill Goodwill	7157000	USD
CY2018Q4	us-gaap	Goodwill Goodwill	0	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	3847000	USD
CY2018Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	1402000	USD
CY2019Q4	us-gaap	Other Assets Miscellaneous Noncurrent OtherAssetsMiscellaneousNoncurrent	2323000	USD
CY2018Q4	us-gaap	Other Assets Miscellaneous Noncurrent OtherAssetsMiscellaneousNoncurrent	3116000	USD
CY2019Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	84508000	USD
CY2018Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	70057000	USD
CY2019Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	31417000	USD
CY2018Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	43079000	USD
CY2019Q4	hlx	Investee Losses In Excess Of Investment Current InvesteeLossesInExcessOfInvestmentCurrent	4069000	USD
CY2018Q4	hlx	Investee Losses In Excess Of Investment Current InvesteeLossesInExcessOfInvestmentCurrent	5125000	USD
CY2019Q4	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	11568000	USD
CY2018Q4	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	10103000	USD
CY2019Q4	us-gaap	Hedging Liabilities Current HedgingLiabilitiesCurrent	1002000	USD
CY2018Q4	us-gaap	Hedging Liabilities Current HedgingLiabilitiesCurrent	9311000	USD
CY2019Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	14333000	USD
CY2018Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	17976000	USD
CY2019Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	62389000	USD
CY2018Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	85594000	USD
CY2019Q4	hlx	Investee Losses In Excess Of Investment Noncurrent InvesteeLossesInExcessOfInvestmentNoncurrent	0	USD
CY2018Q4	hlx	Investee Losses In Excess Of Investment Noncurrent InvesteeLossesInExcessOfInvestmentNoncurrent	6035000	USD
CY2019Q4	us-gaap	Deferred Gain On Sale Of Property DeferredGainOnSaleOfProperty	0	USD
CY2018Q4	us-gaap	Deferred Gain On Sale Of Property DeferredGainOnSaleOfProperty	5052000	USD
CY2019Q4	us-gaap	Contract With Customer Liability Noncurrent ContractWithCustomerLiabilityNoncurrent	8286000	USD
CY2018Q4	us-gaap	Contract With Customer Liability Noncurrent ContractWithCustomerLiabilityNoncurrent	15767000	USD
CY2019Q4	us-gaap	Asset Retirement Obligations Noncurrent AssetRetirementObligationsNoncurrent	28258000	USD
CY2018Q4	us-gaap	Asset Retirement Obligations Noncurrent AssetRetirementObligationsNoncurrent	0	USD
CY2019Q4	us-gaap	Derivative Liabilities Noncurrent DerivativeLiabilitiesNoncurrent	0	USD
CY2018Q4	us-gaap	Derivative Liabilities Noncurrent DerivativeLiabilitiesNoncurrent	884000	USD
CY2019Q4	us-gaap	Other Accrued Liabilities Noncurrent OtherAccruedLiabilitiesNoncurrent	2100000	USD
CY2018Q4	us-gaap	Other Accrued Liabilities Noncurrent OtherAccruedLiabilitiesNoncurrent	11800000	USD
CY2019Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	38644000	USD
CY2018Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	39538000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Term Of Contract LesseeOperatingLeaseTermOfContract	P15Y
CY2019Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	2922274000	USD
CY2018Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	2785778000	USD
CY2019Q4	us-gaap	Operating Leases Future Minimum Payments Due Future Minimum Sublease Rentals OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentals	2900000	USD
CY2019	us-gaap	Operating Lease Cost OperatingLeaseCost	70860000	USD
CY2019	us-gaap	Short Term Lease Cost ShortTermLeaseCost	20384000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due In Four Years OperatingLeasesFutureMinimumPaymentsDueInFourYears	95435000	USD
CY2019	us-gaap	Sublease Income SubleaseIncome	1391000	USD
CY2019	us-gaap	Lease Cost LeaseCost	103633000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	66820000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	60452000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	57363000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	39202000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	6819000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	6251000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	236907000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	31295000	USD
CY2019Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	205612000	USD
CY2019Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	53785000	USD
CY2019Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	151827000	USD
CY2019Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P4Y
CY2019Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0754
CY2019	us-gaap	Operating Lease Payments OperatingLeasePayments	71698000	USD
CY2019	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	1168000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due Current OperatingLeasesFutureMinimumPaymentsDueCurrent	122501000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due In Two Years OperatingLeasesFutureMinimumPaymentsDueInTwoYears	102140000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due In Three Years OperatingLeasesFutureMinimumPaymentsDueInThreeYears	94401000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due In Five Years OperatingLeasesFutureMinimumPaymentsDueInFiveYears	55799000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due Thereafter OperatingLeasesFutureMinimumPaymentsDueThereafter	10448000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due OperatingLeasesFutureMinimumPaymentsDue	480724000	USD
CY2018	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	147800000	USD
CY2017	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	114500000	USD
CY2018	us-gaap	Operating Leases Rent Expense Sublease Rentals1 OperatingLeasesRentExpenseSubleaseRentals1	1400000	USD
CY2017	us-gaap	Operating Leases Rent Expense Sublease Rentals1 OperatingLeasesRentExpenseSubleaseRentals1	1300000	USD
CY2019Q4	us-gaap	Debt Instrument Unamortized Discount DebtInstrumentUnamortizedDiscount	22540000	USD
CY2018Q4	us-gaap	Debt Instrument Unamortized Discount DebtInstrumentUnamortizedDiscount	28802000	USD
CY2019Q4	us-gaap	Deferred Finance Costs Noncurrent Net DeferredFinanceCostsNoncurrentNet	7753000	USD
CY2018Q4	us-gaap	Deferred Finance Costs Noncurrent Net DeferredFinanceCostsNoncurrentNet	10044000	USD
CY2019Q4	us-gaap	Long Term Debt LongTermDebt	405853000	USD
CY2018Q4	us-gaap	Long Term Debt LongTermDebt	440315000	USD
CY2019Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	99731000	USD
CY2018Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	47252000	USD
CY2019Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	306122000	USD
CY2018Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	393063000	USD
CY2019Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Next Rolling Twelve Months LongTermDebtMaturitiesRepaymentsOfPrincipalInNextRollingTwelveMonths	99986000	USD
CY2019Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Rolling Year Two LongTermDebtMaturitiesRepaymentsOfPrincipalInRollingYearTwo	37310000	USD
CY2019Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Rolling Year Three LongTermDebtMaturitiesRepaymentsOfPrincipalInRollingYearThree	132937000	USD
CY2019Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Rolling Year Four LongTermDebtMaturitiesRepaymentsOfPrincipalInRollingYearFour	133333000	USD
CY2019Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Rolling Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalInRollingYearFive	8749000	USD
CY2019Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Rolling After Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalInRollingAfterYearFive	23831000	USD
CY2019Q4	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	436146000	USD
CY2019Q4	us-gaap	Debt Instrument Unamortized Discount DebtInstrumentUnamortizedDiscount	22540000	USD
CY2019Q4	us-gaap	Deferred Finance Costs Noncurrent Net DeferredFinanceCostsNoncurrentNet	7753000	USD
CY2019Q4	us-gaap	Long Term Debt LongTermDebt	405853000	USD
CY2019Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	99731000	USD
CY2019Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	306122000	USD
CY2019	us-gaap	Interest Expense InterestExpense	31186000	USD
CY2018	us-gaap	Interest Expense InterestExpense	32617000	USD
CY2017	us-gaap	Interest Expense InterestExpense	38274000	USD
CY2019	us-gaap	Interest Costs Capitalized Adjustment InterestCostsCapitalizedAdjustment	20246000	USD
CY2018	us-gaap	Interest Costs Capitalized Adjustment InterestCostsCapitalizedAdjustment	15629000	USD
CY2017	us-gaap	Interest Costs Capitalized Adjustment InterestCostsCapitalizedAdjustment	16906000	USD
CY2019	us-gaap	Interest Income Other InterestIncomeOther	2607000	USD
CY2018	us-gaap	Interest Income Other InterestIncomeOther	3237000	USD
CY2017	us-gaap	Interest Income Other InterestIncomeOther	2590000	USD
CY2019	us-gaap	Interest Income Expense Nonoperating Net InterestIncomeExpenseNonoperatingNet	-8333000	USD
CY2018	us-gaap	Interest Income Expense Nonoperating Net InterestIncomeExpenseNonoperatingNet	-13751000	USD
CY2017	us-gaap	Interest Income Expense Nonoperating Net InterestIncomeExpenseNonoperatingNet	-18778000	USD
CY2017	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.35
CY2018	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.21
CY2017Q4	hlx	U.S.Tax Cuts And Jobs Act Of2017 Tax Impact U.S.TaxCutsAndJobsActOf2017TaxImpact	51600000	USD
CY2017	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.35
CY2018	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.21
CY2017Q4	hlx	U.S.Tax Cuts And Jobs Act Of2017 Remeasurement Of Deferred Taxes U.S.TaxCutsAndJobsActOf2017RemeasurementOfDeferredTaxes	59700000	USD
CY2017Q4	hlx	U.S.Tax Cuts And Jobs Act Of2017 Transition Tax On Foreign Earnings U.S.TaxCutsAndJobsActOf2017TransitionTaxOnForeignEarnings	8100000	USD
CY2017Q4	hlx	U.S.Tax Cuts And Jobs Act Of2017 Deemed Mandatory Repatriation U.S.TaxCutsAndJobsActOf2017DeemedMandatoryRepatriation	8100000	USD
CY2019	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	4374000	USD
CY2018	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	4830000	USD
CY2017	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	4161000	USD
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	3485000	USD
CY2018	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-2430000	USD
CY2017	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-54585000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	7859000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	2400000	USD
CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-50424000	USD
CY2019	us-gaap	Federal Income Tax Expense Benefit Continuing Operations FederalIncomeTaxExpenseBenefitContinuingOperations	3715000	USD
CY2018	us-gaap	Federal Income Tax Expense Benefit Continuing Operations FederalIncomeTaxExpenseBenefitContinuingOperations	-3161000	USD
CY2017	us-gaap	Federal Income Tax Expense Benefit Continuing Operations FederalIncomeTaxExpenseBenefitContinuingOperations	-53044000	USD
CY2019	us-gaap	Foreign Income Tax Expense Benefit Continuing Operations ForeignIncomeTaxExpenseBenefitContinuingOperations	4144000	USD
CY2018	us-gaap	Foreign Income Tax Expense Benefit Continuing Operations ForeignIncomeTaxExpenseBenefitContinuingOperations	5561000	USD
CY2017	us-gaap	Foreign Income Tax Expense Benefit Continuing Operations ForeignIncomeTaxExpenseBenefitContinuingOperations	2620000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	7859000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	2400000	USD
CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-50424000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	2219000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	-28838000	USD
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	-221000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	63337000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	59836000	USD
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	-20151000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	65556000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	30998000	USD
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-20372000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2018	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2017	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.350
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	-0.100
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	-0.159
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	-0.062
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Change In Enacted Tax Rate EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate	0
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Change In Enacted Tax Rate EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate	0
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Change In Enacted Tax Rate EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate	2.931
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Repatriation Of Foreign Earnings EffectiveIncomeTaxRateReconciliationRepatriationOfForeignEarnings	0
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Repatriation Of Foreign Earnings EffectiveIncomeTaxRateReconciliationRepatriationOfForeignEarnings	0
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Repatriation Of Foreign Earnings EffectiveIncomeTaxRateReconciliationRepatriationOfForeignEarnings	-0.397
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits Foreign EffectiveIncomeTaxRateReconciliationTaxCreditsForeign	0
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits Foreign EffectiveIncomeTaxRateReconciliationTaxCreditsForeign	0
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits Foreign EffectiveIncomeTaxRateReconciliationTaxCreditsForeign	-0.311
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.010
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.026
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.036
CY2019	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.120
CY2018	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.077
CY2017	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	2.475
CY2017Q4	hlx	U.S.Tax Cuts And Jobs Act Of2017 Tax Impact U.S.TaxCutsAndJobsActOf2017TaxImpact	51600000	USD
CY2017Q2	us-gaap	Income Tax Reconciliation Tax Credits Foreign IncomeTaxReconciliationTaxCreditsForeign	6300000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	166239000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	149974000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Financing Arrangements DeferredTaxLiabilitiesFinancingArrangements	4643000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities Financing Arrangements DeferredTaxLiabilitiesFinancingArrangements	5902000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	0	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	1309000	USD
CY2019Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	170882000	USD
CY2018Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	157185000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	64178000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	47916000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Other DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsOther	13203000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Other DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsOther	21347000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	77381000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	69263000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	18631000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	17940000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	112132000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	105862000	USD
CY2019Q4	us-gaap	Undistributed Earnings Of Foreign Subsidiaries UndistributedEarningsOfForeignSubsidiaries	129200000	USD
CY2018Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	300000	USD
CY2018Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	306000	USD
CY2017Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	318000	USD
CY2016Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	343000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	0	USD
CY2018	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	0	USD
CY2017	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	0	USD
CY2019	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	306000	USD
CY2018	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	12000	USD
CY2017	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	25000	USD
CY2019Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	0	USD
CY2018Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	306000	USD
CY2017Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	318000	USD
CY2019Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	240000000	shares
CY2019Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	5000000	shares
CY2019Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.01
CY2019Q4	us-gaap	Accumulated Other Comprehensive Income Loss Foreign Currency Translation Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax	-64455000	USD
CY2018Q4	us-gaap	Accumulated Other Comprehensive Income Loss Foreign Currency Translation Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax	-69855000	USD
CY2019Q4	us-gaap	Accumulated Other Comprehensive Income Loss Cumulative Changes In Net Gain Loss From Cash Flow Hedges Effect Net Of Tax AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax	-285000	USD
CY2018Q4	us-gaap	Accumulated Other Comprehensive Income Loss Cumulative Changes In Net Gain Loss From Cash Flow Hedges Effect Net Of Tax AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax	-4109000	USD
CY2019Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-64740000	USD
CY2018Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-73964000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Other Comprehensive Loss DeferredTaxAssetsOtherComprehensiveLoss	100000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Other Comprehensive Loss DeferredTaxAssetsOtherComprehensiveLoss	1000000.0	USD
CY2019Q4	us-gaap	Stock Repurchase Program Remaining Number Of Shares Authorized To Be Repurchased StockRepurchaseProgramRemainingNumberOfSharesAuthorizedToBeRepurchased	4866645	shares
CY2019	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	751909000	USD
CY2018	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	739818000	USD
CY2019Q4	us-gaap	Contract With Customer Asset Net ContractWithCustomerAssetNet	700000	USD
CY2018Q4	us-gaap	Contract With Customer Asset Net ContractWithCustomerAssetNet	5800000	USD
CY2019Q4	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	19900000	USD
CY2018Q4	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	25900000	USD
CY2019	us-gaap	Contract With Customer Liability Revenue Recognized ContractWithCustomerLiabilityRevenueRecognized	10100000	USD
CY2018	us-gaap	Contract With Customer Liability Revenue Recognized ContractWithCustomerLiabilityRevenueRecognized	11600000	USD
CY2019Q4	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	796400000	USD
CY2019Q4	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	509400000	USD
CY2019Q4	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	221200000	USD
CY2019Q4	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	65800000	USD
CY2019	us-gaap	Contract With Customer Performance Obligation Satisfied In Previous Period ContractWithCustomerPerformanceObligationSatisfiedInPreviousPeriod	2100000	USD
CY2019Q4	us-gaap	Capitalized Contract Cost Net CapitalizedContractCostNet	42900000	USD
CY2018Q4	us-gaap	Capitalized Contract Cost Net CapitalizedContractCostNet	65900000	USD
CY2019	us-gaap	Capitalized Contract Cost Amortization CapitalizedContractCostAmortization	31500000	USD
CY2018	us-gaap	Capitalized Contract Cost Amortization CapitalizedContractCostAmortization	33100000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	57919000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	28598000	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	30052000	USD
CY2019	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Basic UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	487000	USD
CY2018	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Basic UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	273000	USD
CY2017	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Basic UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	356000	USD
CY2019	hlx	Accretion Of Redeemable Noncontrolling Interests AccretionOfRedeemableNoncontrollingInterests	143000	USD
CY2018	hlx	Accretion Of Redeemable Noncontrolling Interests AccretionOfRedeemableNoncontrollingInterests	0	USD
CY2017	hlx	Accretion Of Redeemable Noncontrolling Interests AccretionOfRedeemableNoncontrollingInterests	0	USD
CY2019	us-gaap	Undistributed Earnings UndistributedEarnings	57289000	USD
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	147536000	shares
CY2018	us-gaap	Undistributed Earnings UndistributedEarnings	28325000	USD
CY2018	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	146702000	shares
CY2017	us-gaap	Undistributed Earnings UndistributedEarnings	29696000	USD
CY2017	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	145295000	shares
CY2019	us-gaap	Undistributed Earnings UndistributedEarnings	57289000	USD
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	147536000	shares
CY2018	us-gaap	Undistributed Earnings UndistributedEarnings	28325000	USD
CY2018	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	146702000	shares
CY2017	us-gaap	Undistributed Earnings UndistributedEarnings	29696000	USD
CY2017	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	145295000	shares
CY2019	us-gaap	Amount Of Dilutive Securities Stock Options And Restrictive Stock Units AmountOfDilutiveSecuritiesStockOptionsAndRestrictiveStockUnits	0	USD
CY2019	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	2041000	shares
CY2018	us-gaap	Amount Of Dilutive Securities Stock Options And Restrictive Stock Units AmountOfDilutiveSecuritiesStockOptionsAndRestrictiveStockUnits	0	USD
CY2018	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	128000	shares
CY2017	us-gaap	Amount Of Dilutive Securities Stock Options And Restrictive Stock Units AmountOfDilutiveSecuritiesStockOptionsAndRestrictiveStockUnits	0	USD
CY2017	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	5000	shares
CY2019	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Diluted UndistributedEarningsLossAllocatedToParticipatingSecuritiesDiluted	-6000	USD
CY2018	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Diluted UndistributedEarningsLossAllocatedToParticipatingSecuritiesDiluted	-1000	USD
CY2017	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Diluted UndistributedEarningsLossAllocatedToParticipatingSecuritiesDiluted	0	USD
CY2019	us-gaap	Net Income Loss Attributable To Parent Diluted NetIncomeLossAttributableToParentDiluted	57295000	USD
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	149577000	shares
CY2018	us-gaap	Net Income Loss Attributable To Parent Diluted NetIncomeLossAttributableToParentDiluted	28326000	USD
CY2018	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	146830000	shares
CY2017	us-gaap	Net Income Loss Attributable To Parent Diluted NetIncomeLossAttributableToParentDiluted	29696000	USD
CY2017	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	145300000	shares
CY2019	hlx	Number Of Active Incentive Plans NumberOfActiveIncentivePlans	1
CY2019	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	3	segment
CY2019	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	751909000	USD
CY2018	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	739818000	USD
CY2017	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	581383000	USD
CY2019	us-gaap	Operating Income Loss OperatingIncomeLoss	67997000	USD
CY2018	us-gaap	Operating Income Loss OperatingIncomeLoss	51543000	USD
CY2017	us-gaap	Operating Income Loss OperatingIncomeLoss	-1130000	USD
CY2019	us-gaap	Interest Income Expense Nonoperating Net InterestIncomeExpenseNonoperatingNet	-8333000	USD
CY2018	us-gaap	Interest Income Expense Nonoperating Net InterestIncomeExpenseNonoperatingNet	-13751000	USD
CY2017	us-gaap	Interest Income Expense Nonoperating Net InterestIncomeExpenseNonoperatingNet	-18778000	USD
CY2019	hlx	Net Other Nonoperating Income Expense Excluding Interest NetOtherNonoperatingIncomeExpenseExcludingInterest	5892000	USD
CY2018	hlx	Net Other Nonoperating Income Expense Excluding Interest NetOtherNonoperatingIncomeExpenseExcludingInterest	-6794000	USD
CY2017	hlx	Net Other Nonoperating Income Expense Excluding Interest NetOtherNonoperatingIncomeExpenseExcludingInterest	-464000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	65556000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	30998000	USD
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-20372000	USD
CY2019	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	140854000	USD
CY2018	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	137083000	USD
CY2017	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	231127000	USD
CY2019	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	112720000	USD
CY2018	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	110522000	USD
CY2017	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	108745000	USD
CY2019	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	751909000	USD
CY2018	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	739818000	USD
CY2017	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	581383000	USD
CY2019Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	28258000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	1872637000	USD
CY2018Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	1826745000	USD
CY2019Q4	us-gaap	Assets Assets	2596731000	USD
CY2018Q4	us-gaap	Assets Assets	2347730000	USD
CY2018Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	0	USD
CY2019	us-gaap	Asset Retirement Obligation Liabilities Incurred AssetRetirementObligationLiabilitiesIncurred	53294000	USD
CY2019	us-gaap	Asset Retirement Obligation Liabilities Settled AssetRetirementObligationLiabilitiesSettled	28296000	USD
CY2019	us-gaap	Asset Retirement Obligation Revision Of Estimate AssetRetirementObligationRevisionOfEstimate	822000	USD
CY2019	us-gaap	Asset Retirement Obligation Accretion Expense AssetRetirementObligationAccretionExpense	2438000	USD
CY2019	us-gaap	Interest Paid Net InterestPaidNet	1909000	USD
CY2018	us-gaap	Interest Paid Net InterestPaidNet	7369000	USD
CY2017	us-gaap	Interest Paid Net InterestPaidNet	10367000	USD
CY2019	us-gaap	Income Taxes Paid IncomeTaxesPaid	8856000	USD
CY2018	us-gaap	Income Taxes Paid IncomeTaxesPaid	5705000	USD
CY2017	us-gaap	Income Taxes Paid IncomeTaxesPaid	6015000	USD
CY2019	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	10200000	USD
CY2018	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	9900000	USD
CY2019Q4	us-gaap	Derivative Instruments In Hedges Assets At Fair Value DerivativeInstrumentsInHedgesAssetsAtFairValue	44000	USD
CY2018Q4	us-gaap	Derivative Instruments In Hedges Assets At Fair Value DerivativeInstrumentsInHedgesAssetsAtFairValue	1064000	USD
CY2019Q4	us-gaap	Derivative Instruments In Hedges Liabilities At Fair Value DerivativeInstrumentsInHedgesLiabilitiesAtFairValue	401000	USD
CY2018Q4	us-gaap	Derivative Instruments In Hedges Liabilities At Fair Value DerivativeInstrumentsInHedgesLiabilitiesAtFairValue	6211000	USD
CY2019Q4	us-gaap	Derivative Instruments Not Designated As Hedging Instruments Liability At Fair Value DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsLiabilityAtFairValue	601000	USD
CY2018Q4	us-gaap	Derivative Instruments Not Designated As Hedging Instruments Liability At Fair Value DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsLiabilityAtFairValue	3984000	USD
CY2019	us-gaap	Cash Flow Hedge Gain Loss To Be Reclassified Within Twelve Months CashFlowHedgeGainLossToBeReclassifiedWithinTwelveMonths	-300000	USD
CY2019	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax	-680000	USD
CY2018	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax	-847000	USD
CY2017	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax	3323000	USD
CY2019	us-gaap	Derivative Instruments Gain Loss Reclassified From Accumulated Oci Into Income Effective Portion Net DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet	-5470000	USD
CY2018	us-gaap	Derivative Instruments Gain Loss Reclassified From Accumulated Oci Into Income Effective Portion Net DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet	-7201000	USD
CY2017	us-gaap	Derivative Instruments Gain Loss Reclassified From Accumulated Oci Into Income Effective Portion Net DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet	-12915000	USD
CY2019	us-gaap	Derivative Gain Loss On Derivative Net DerivativeGainLossOnDerivativeNet	-378000	USD
CY2018	us-gaap	Derivative Gain Loss On Derivative Net DerivativeGainLossOnDerivativeNet	-901000	USD
CY2017	us-gaap	Derivative Gain Loss On Derivative Net DerivativeGainLossOnDerivativeNet	818000	USD
CY2019Q1	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	166823000	USD
CY2019Q2	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	201728000	USD
CY2019Q3	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	212609000	USD
CY2019Q4	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	170749000	USD
CY2019Q1	us-gaap	Gross Profit GrossProfit	16254000	USD
CY2019Q2	us-gaap	Gross Profit GrossProfit	39934000	USD
CY2019Q3	us-gaap	Gross Profit GrossProfit	55074000	USD
CY2019Q4	us-gaap	Gross Profit GrossProfit	26576000	USD
CY2019Q1	us-gaap	Profit Loss ProfitLoss	1318000	USD
CY2019Q2	us-gaap	Profit Loss ProfitLoss	16823000	USD
CY2019Q3	us-gaap	Profit Loss ProfitLoss	31622000	USD
CY2019Q4	us-gaap	Profit Loss ProfitLoss	7934000	USD
CY2019Q1	us-gaap	Net Income Loss NetIncomeLoss	1318000	USD
CY2019Q2	us-gaap	Net Income Loss NetIncomeLoss	16854000	USD
CY2019Q3	us-gaap	Net Income Loss NetIncomeLoss	31695000	USD
CY2019Q4	us-gaap	Net Income Loss NetIncomeLoss	8052000	USD
CY2019Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.01
CY2019Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.11
CY2019Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.11
CY2019Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.21
CY2019Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.05
CY2019Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.21
CY2019Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.05
CY2019Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.01
CY2018Q1	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	164262000	USD
CY2018Q2	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	204625000	USD
CY2018Q3	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	212575000	USD
CY2018Q4	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	158356000	USD
CY2018Q1	us-gaap	Gross Profit GrossProfit	12983000	USD
CY2018Q2	us-gaap	Gross Profit GrossProfit	42897000	USD
CY2018Q3	us-gaap	Gross Profit GrossProfit	51993000	USD
CY2018Q4	us-gaap	Gross Profit GrossProfit	13811000	USD
CY2018Q1	us-gaap	Profit Loss ProfitLoss	-2560000	USD
CY2018Q2	us-gaap	Profit Loss ProfitLoss	17784000	USD
CY2018Q3	us-gaap	Profit Loss ProfitLoss	27121000	USD
CY2018Q4	us-gaap	Profit Loss ProfitLoss	-13747000	USD
CY2018Q1	us-gaap	Net Income Loss NetIncomeLoss	-2560000	USD
CY2018Q2	us-gaap	Net Income Loss NetIncomeLoss	17784000	USD
CY2018Q3	us-gaap	Net Income Loss NetIncomeLoss	27121000	USD
CY2018Q4	us-gaap	Net Income Loss NetIncomeLoss	-13747000	USD
CY2018Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.02
CY2018Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.12
CY2018Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.18
CY2018Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.09
CY2018Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.02
CY2018Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.12
CY2018Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.18
CY2018Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.09

Files In Submission

Name	View Source	Status
0000866829-20-000007-index-headers.html	Edgar Link	pending
0000866829-20-000007-index.html	Edgar Link	pending
0000866829-20-000007.txt	Edgar Link	pending
0000866829-20-000007-xbrl.zip	Edgar Link	pending
FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xlsx	Edgar Link	pending
hlx-20191231.xsd	Edgar Link	pending
hlx-20191231_cal.xml	Edgar Link	unprocessable
hlx-20191231_def.xml	Edgar Link	unprocessable
hlx-20191231_lab.xml	Edgar Link	unprocessable
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$HLX
HELIX ENERGY SOLUTIONS GROUP INC Stock $hlx

2019 Q4 Form 10-K Financial Statement

#000086682920000007 Filed on February 27, 2020

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$HLX HELIX ENERGY SOLUTIONS GROUP INC Stock $hlx

2019 Q4 Form 10-K Financial Statement

#000086682920000007 Filed on February 27, 2020

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$HLX
HELIX ENERGY SOLUTIONS GROUP INC Stock $hlx