$HLX
HELIX ENERGY SOLUTIONS GROUP INC Stock $hlx

$hlx Overview Financials Valuation SEC Filings Company Website

2019 Q4 Form 10-Q Financial Statement

#000086682919000034 Filed on October 23, 2019

Income Statement

Concept	2019 Q4	2019 Q3	2018 Q3
Revenue	$170.7M	$212.6M	$212.6M
YoY Change	7.83%	0.02%	30.21%
Cost Of Revenue	$144.2M	$157.5M	$160.6M
YoY Change	-0.21%	-1.9%	12.99%
Gross Profit	$26.58M	$55.07M	$51.99M
YoY Change	92.43%	5.93%	145.93%
Gross Profit Margin	15.56%	25.9%	24.46%
Selling, General & Admin	$20.90M	$16.08M	$20.76M
YoY Change	20.81%	-22.57%	26.8%
% of Gross Profit	78.64%	29.19%	39.93%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$28.30M	$27.90M	$27.60M
YoY Change	4.04%	1.09%	4.94%
% of Gross Profit	106.49%	50.66%	53.08%
Operating Expenses	$20.90M	$16.08M	$20.76M
YoY Change	20.81%	-22.57%	26.8%
Operating Profit	$5.676M	$39.00M	$31.38M
YoY Change	-262.68%	24.29%	558.21%
Interest Expense	-$600.0K	$7.694M	$8.171M
YoY Change	-91.89%	-5.84%	-1.98%
% of Operating Profit	-10.57%	19.73%	26.04%
Other Income/Expense, Net	$4.000M	-$2.285M	-$709.0K
YoY Change	-335.29%	222.28%	28.68%
Pretax Income	$9.100M	$35.16M	$27.96M
YoY Change	-172.22%	25.75%	3623.3%
Income Tax	$1.100M	$3.539M	$841.0K
% Of Pretax Income	12.09%	10.07%	3.01%
Net Earnings	$8.052M	$31.70M	$27.12M
YoY Change	-158.57%	16.87%	1084.32%
Net Earnings / Revenue	4.72%	14.91%	12.76%
Basic Earnings Per Share	$0.05	$0.21	$0.18
Diluted Earnings Per Share	$0.05	$0.21	$0.18
COMMON SHARES
Basic Shares Outstanding	148.8M shares	147.6M shares	146.7M shares
Diluted Shares Outstanding		148.4M shares	147.0M shares

Balance Sheet

Concept	2019 Q4	2019 Q3	2018 Q3
SHORT-TERM ASSETS
Cash & Short-Term Investments	$208.4M	$286.3M	$325.1M
YoY Change	-25.44%	-11.93%	-8.91%
Cash & Equivalents	$208.4M	$286.3M	$325.1M
Short-Term Investments
Other Short-Term Assets	$50.45M	$61.75M	$47.45M
YoY Change	-2.22%	30.14%	24.31%
Inventory
Prepaid Expenses	$12.64M	$14.88M	$13.28M
Receivables	$125.5M	$91.71M	$91.00M
Other Receivables	$0.00	$13.00M	$0.00
Total Short-Term Assets	$438.5M	$512.3M	$529.9M
YoY Change	-2.76%	-3.32%	-0.27%
LONG-TERM ASSETS
Property, Plant & Equipment	$1.873B	$1.798B	$1.772B
YoY Change	2.51%	1.48%	2.16%
Goodwill	$7.157M	$6.637M
YoY Change
Intangibles
YoY Change
Long-Term Investments
YoY Change
Other Assets	$84.51M	$90.32M	$76.99M
YoY Change	20.63%	17.33%	-23.76%
Total Long-Term Assets	$2.158B	$2.101B	$1.849B
YoY Change	13.78%	13.67%	0.73%
TOTAL ASSETS
Total Short-Term Assets	$438.5M	$512.3M	$529.9M
Total Long-Term Assets	$2.158B	$2.101B	$1.849B
Total Assets	$2.597B	$2.614B	$2.378B
YoY Change	10.61%	9.88%	0.51%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$69.06M	$79.12M	$62.84M
YoY Change	25.98%	25.9%	-31.25%
Accrued Expenses	$62.39M	$71.98M	$84.43M
YoY Change	-27.11%	-14.74%	38.96%
Deferred Revenue	$11.57M	$10.81M	$13.60M
YoY Change	14.5%	-20.47%
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due	$99.73M	$108.5M	$46.78M
YoY Change	111.06%	131.85%	-56.93%
Total Short-Term Liabilities	$285.0M	$312.4M	$199.9M
YoY Change	48.81%	56.27%	-23.85%
LONG-TERM LIABILITIES
Long-Term Debt	$306.1M	$304.9M	$401.3M
YoY Change	-22.12%	-24.01%	1.5%
Other Long-Term Liabilities	$38.64M	$39.01M	$42.38M
YoY Change	-2.26%	-7.96%	-0.83%
Total Long-Term Liabilities	$344.8M	$343.9M	$443.6M
YoY Change	-20.3%	-22.47%	1.27%
TOTAL LIABILITIES
Total Short-Term Liabilities	$285.0M	$312.4M	$199.9M
Total Long-Term Liabilities	$344.8M	$343.9M	$443.6M
Total Liabilities	$893.7M	$931.2M	$746.3M
YoY Change	22.43%	24.78%	-12.69%
SHAREHOLDERS EQUITY
Retained Earnings	$445.4M	$437.4M	$396.8M
YoY Change	16.27%	10.24%	31.24%
Common Stock	$1.319B	$1.317B	$1.307B
YoY Change	0.78%	0.77%	1.95%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$1.700B	$1.679B	$1.632B
YoY Change
Total Liabilities & Shareholders Equity	$2.597B	$2.614B	$2.378B
YoY Change	10.61%	9.88%	0.51%

Cashflow Statement

Concept	2019 Q4	2019 Q3	2018 Q3
OPERATING ACTIVITIES
Net Income	$8.052M	$31.70M	$27.12M
YoY Change	-158.57%	16.87%	1084.32%
Depreciation, Depletion And Amortization	$28.30M	$27.90M	$27.60M
YoY Change	4.04%	1.09%	4.94%
Cash From Operating Activities	$79.80M	$57.30M	$63.10M
YoY Change	73.86%	-9.19%	301.91%
INVESTING ACTIVITIES
Capital Expenditures	-$95.30M	-$18.10M	-$13.40M
YoY Change	16.65%	35.07%	-63.78%
Acquisitions
YoY Change
Other Investing Activities	$0.00	$100.0K	$0.00
YoY Change	-100.0%
Cash From Investing Activities	-$95.20M	-$18.20M	-$13.40M
YoY Change	18.11%	35.82%	-63.78%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-10.20M	-13.10M	-13.00M
YoY Change	0.0%	0.77%	-1.52%
NET CHANGE
Cash From Operating Activities	79.80M	57.30M	63.10M
Cash From Investing Activities	-95.20M	-18.20M	-13.40M
Cash From Financing Activities	-10.20M	-13.10M	-13.00M
Net Change In Cash	-25.60M	26.00M	36.70M
YoY Change	-42.98%	-29.16%	-206.38%
FREE CASH FLOW
Cash From Operating Activities	$79.80M	$57.30M	$63.10M
Capital Expenditures	-$95.30M	-$18.10M	-$13.40M
Free Cash Flow	$175.1M	$75.40M	$76.50M
YoY Change	37.23%	-1.44%	45.16%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
	dei	Amendment Flag AmendmentFlag	false
	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	Q3
	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2019
	dei	Entity Central Index Key EntityCentralIndexKey	0000866829
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CY2018Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	240000000	shares
CY2019Q3	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	240000000	shares
CY2018Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	148203000	shares
CY2019Q3	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	148802000	shares
	dei	Document Type DocumentType	10-Q
CY2018Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	1826745000	USD
CY2019Q3	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	213048000	USD
	dei	Document Quarterly Report DocumentQuarterlyReport	true
	dei	Document Period End Date DocumentPeriodEndDate	2019-09-30
	dei	Document Transition Report DocumentTransitionReport	false
	dei	Entity File Number EntityFileNumber	001-32936
	dei	Entity Registrant Name EntityRegistrantName	HELIX ENERGY SOLUTIONS GROUP, INC.
	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	MN
	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	95-3409686
	dei	Entity Address Address Line1 EntityAddressAddressLine1	3505 West Sam Houston Parkway North
	dei	Entity Address Address Line2 EntityAddressAddressLine2	Suite 400
	dei	Entity Address City Or Town EntityAddressCityOrTown	Houston
	dei	Entity Address State Or Province EntityAddressStateOrProvince	TX
	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	77043
	dei	City Area Code CityAreaCode	281
	dei	Local Phone Number LocalPhoneNumber	618–0400
	dei	Security12b Title Security12bTitle	Common Stock
	dei	Trading Symbol TradingSymbol	HLX
	dei	Security Exchange Name SecurityExchangeName	NYSE
	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
	dei	Entity Small Business EntitySmallBusiness	false
	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
	dei	Entity Shell Company EntityShellCompany	false
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CY2018Q3	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax	-88000	USD
	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax	-701000	USD
	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax	839000	USD
CY2019Q3	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesBeforeTax	-1046000	USD
CY2018Q3	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesBeforeTax	-1799000	USD
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesBeforeTax	-4867000	USD
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesBeforeTax	-5233000	USD
CY2019Q3	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesTax	156000	USD
CY2018Q3	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesTax	357000	USD
	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesTax	838000	USD
	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesTax	1298000	USD
CY2019Q3	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	616000	USD
CY2018Q3	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	1354000	USD
	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	3328000	USD
	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	4774000	USD
CY2019Q3	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Before Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeTax	0	USD
CY2018Q3	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Before Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeTax	0	USD
	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Before Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeTax	0	USD
	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Before Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeTax	-629000	USD
CY2019Q3	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax	0	USD
CY2018Q3	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax	0	USD
	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax	0	USD
	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax	-132000	USD
CY2019Q3	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	0	USD
CY2018Q3	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	0	USD
	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	0	USD
	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-497000	USD
CY2019Q3	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-4301000	USD
CY2018Q3	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-1421000	USD
	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-4564000	USD
	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-4277000	USD
CY2019Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-3685000	USD
CY2018Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-67000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-1236000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	0	USD
CY2019Q3	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	27937000	USD
CY2018Q3	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	27054000	USD
	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	48527000	USD
	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	42345000	USD
CY2019Q3	us-gaap	Net Income Loss Attributable To Redeemable Noncontrolling Interest NetIncomeLossAttributableToRedeemableNoncontrollingInterest	-73000	USD
CY2018Q3	us-gaap	Net Income Loss Attributable To Redeemable Noncontrolling Interest NetIncomeLossAttributableToRedeemableNoncontrollingInterest	0	USD
	us-gaap	Net Income Loss Attributable To Redeemable Noncontrolling Interest NetIncomeLossAttributableToRedeemableNoncontrollingInterest	-104000	USD
	us-gaap	Net Income Loss Attributable To Redeemable Noncontrolling Interest NetIncomeLossAttributableToRedeemableNoncontrollingInterest	0	USD
CY2019Q3	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Noncontrolling Interest OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToNoncontrollingInterest	-78000	USD
CY2018Q3	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Noncontrolling Interest OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToNoncontrollingInterest	0	USD
	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Noncontrolling Interest OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToNoncontrollingInterest	-78000	USD
	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Noncontrolling Interest OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToNoncontrollingInterest	0	USD
CY2019Q3	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	-151000	USD
CY2018Q3	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	0	USD
	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	-182000	USD
	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	0	USD
CY2019Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	28088000	USD
CY2018Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	27054000	USD
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	48709000	USD
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	42345000	USD
CY2019Q2	us-gaap	Stockholders Equity StockholdersEquity	1648396000	USD
CY2019Q2	us-gaap	Redeemable Noncontrolling Interest Equity Carrying Amount RedeemableNoncontrollingInterestEquityCarryingAmount	3383000	USD
CY2019Q3	us-gaap	Net Income Loss NetIncomeLoss	31695000	USD
CY2019Q3	us-gaap	Net Income Loss Attributable To Redeemable Noncontrolling Interest NetIncomeLossAttributableToRedeemableNoncontrollingInterest	-73000	USD
CY2019Q3	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-4301000	USD
CY2019Q3	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Noncontrolling Interest OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToNoncontrollingInterest	-78000	USD
CY2019Q3	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	616000	USD
CY2019Q3	hlx	Accretion Of Redeemable Noncontrolling Interests AccretionOfRedeemableNoncontrollingInterests	25000	USD
CY2019Q3	us-gaap	Temporary Equity Accretion To Redemption Value TemporaryEquityAccretionToRedemptionValue	25000	USD
CY2019Q3	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	214000	USD
CY2019Q3	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	2428000	USD
CY2019Q3	us-gaap	Stockholders Equity StockholdersEquity	1679023000	USD
CY2019Q3	us-gaap	Redeemable Noncontrolling Interest Equity Carrying Amount RedeemableNoncontrollingInterestEquityCarryingAmount	3257000	USD
CY2018Q2	us-gaap	Stockholders Equity StockholdersEquity	1602394000	USD
CY2018Q3	us-gaap	Net Income Loss NetIncomeLoss	27121000	USD
CY2018Q3	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-1421000	USD
CY2018Q3	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	1354000	USD
CY2018Q3	us-gaap	Adjustments To Additional Paid In Capital Equity Component Of Convertible Debt AdjustmentsToAdditionalPaidInCapitalEquityComponentOfConvertibleDebt	-2000	USD
CY2018Q3	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	213000	USD
CY2018Q3	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	2509000	USD
CY2018Q3	us-gaap	Stockholders Equity StockholdersEquity	1632168000	USD
CY2018Q4	us-gaap	Stockholders Equity StockholdersEquity	1617779000	USD
CY2018Q4	us-gaap	Redeemable Noncontrolling Interest Equity Carrying Amount RedeemableNoncontrollingInterestEquityCarryingAmount	0	USD
	us-gaap	Net Income Loss NetIncomeLoss	49867000	USD
	us-gaap	Net Income Loss Attributable To Redeemable Noncontrolling Interest NetIncomeLossAttributableToRedeemableNoncontrollingInterest	-104000	USD
	hlx	Reclassification Of Deferred Gain From Sale And Leaseback Transaction To Retained Earnings ReclassificationOfDeferredGainFromSaleAndLeasebackTransactionToRetainedEarnings	4560000	USD
	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-4564000	USD
	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Noncontrolling Interest OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToNoncontrollingInterest	-78000	USD
	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	3328000	USD
	us-gaap	Noncontrolling Interest Increase From Subsidiary Equity Issuance NoncontrollingInterestIncreaseFromSubsidiaryEquityIssuance	3396000	USD
	hlx	Accretion Of Redeemable Noncontrolling Interests AccretionOfRedeemableNoncontrollingInterests	43000	USD
	us-gaap	Temporary Equity Accretion To Redemption Value TemporaryEquityAccretionToRedemptionValue	43000	USD
	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	-765000	USD
	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	8861000	USD
CY2019Q3	us-gaap	Stockholders Equity StockholdersEquity	1679023000	USD
CY2019Q3	us-gaap	Redeemable Noncontrolling Interest Equity Carrying Amount RedeemableNoncontrollingInterestEquityCarryingAmount	3257000	USD
	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	7456000	USD
CY2018Q3	us-gaap	Stockholders Equity StockholdersEquity	1632168000	USD
CY2017Q4	us-gaap	Stockholders Equity StockholdersEquity	1567393000	USD
	us-gaap	Net Income Loss NetIncomeLoss	42345000	USD
	hlx	Reclassification Of Stranded Tax Effect From Aoci To Retained Earnings ReclassificationOfStrandedTaxEffectFromAOCIToRetainedEarnings	0	USD
	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-4277000	USD
	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	4774000	USD
	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-497000	USD
	us-gaap	Adjustments To Additional Paid In Capital Equity Component Of Convertible Debt AdjustmentsToAdditionalPaidInCapitalEquityComponentOfConvertibleDebt	15411000	USD
	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	-438000	USD
	us-gaap	Profit Loss ProfitLoss	49763000	USD
	us-gaap	Profit Loss ProfitLoss	42345000	USD
	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	84420000	USD
	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	83339000	USD
	us-gaap	Amortization Of Debt Discount Premium AmortizationOfDebtDiscountPremium	4642000	USD
	us-gaap	Amortization Of Debt Discount Premium AmortizationOfDebtDiscountPremium	4238000	USD
	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	2752000	USD
	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	2703000	USD
	us-gaap	Share Based Compensation ShareBasedCompensation	8979000	USD
	us-gaap	Share Based Compensation ShareBasedCompensation	7569000	USD
	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	2347000	USD
	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-5716000	USD
	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-82000	USD
	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-378000	USD
	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	0	USD
	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	146000	USD
	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-18000	USD
	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-1183000	USD
	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	2351000	USD
	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	2289000	USD
	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	45399000	USD
	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	15769000	USD
	us-gaap	Increase Decrease In Other Current Assets IncreaseDecreaseInOtherCurrentAssets	-12215000	USD
	us-gaap	Increase Decrease In Other Current Assets IncreaseDecreaseInOtherCurrentAssets	5662000	USD
	us-gaap	Increase Decrease In Income Taxes Payable Net Of Income Taxes Receivable IncreaseDecreaseInIncomeTaxesPayableNetOfIncomeTaxesReceivable	-3143000	USD
	us-gaap	Increase Decrease In Income Taxes Payable Net Of Income Taxes Receivable IncreaseDecreaseInIncomeTaxesPayableNetOfIncomeTaxesReceivable	2963000	USD
	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	-14765000	USD
	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	6968000	USD
	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	9683000	USD
	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	-28723000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	89877000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	150827000	USD
	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	45636000	USD
	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	55431000	USD
	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	4081000	USD
	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	0	USD
	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	2550000	USD
	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	25000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-47167000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-55406000	USD
	us-gaap	Proceeds From Convertible Debt ProceedsFromConvertibleDebt	0	USD
	us-gaap	Proceeds From Convertible Debt ProceedsFromConvertibleDebt	125000000	USD
	us-gaap	Repayments Of Convertible Debt RepaymentsOfConvertibleDebt	0	USD
	us-gaap	Repayments Of Convertible Debt RepaymentsOfConvertibleDebt	60365000	USD
	us-gaap	Proceeds From Issuance Of Other Long Term Debt ProceedsFromIssuanceOfOtherLongTermDebt	35000000	USD
	us-gaap	Proceeds From Issuance Of Other Long Term Debt ProceedsFromIssuanceOfOtherLongTermDebt	0	USD
	us-gaap	Repayments Of Other Long Term Debt RepaymentsOfOtherLongTermDebt	34567000	USD
	us-gaap	Repayments Of Other Long Term Debt RepaymentsOfOtherLongTermDebt	62872000	USD
	us-gaap	Repayments Of Secured Debt RepaymentsOfSecuredDebt	26786000	USD
	us-gaap	Repayments Of Secured Debt RepaymentsOfSecuredDebt	26786000	USD
	hlx	Repayments Of Long Term Secured Debt RepaymentsOfLongTermSecuredDebt	6858000	USD
	hlx	Repayments Of Long Term Secured Debt RepaymentsOfLongTermSecuredDebt	6532000	USD
	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	1544000	USD
	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	3867000	USD
	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	1345000	USD
	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	1058000	USD
	us-gaap	Proceeds From Stock Plans ProceedsFromStockPlans	462000	USD
	us-gaap	Proceeds From Stock Plans ProceedsFromStockPlans	506000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-35638000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-35974000	USD
	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	-191000	USD
	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	-947000	USD
	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	6881000	USD
	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	58500000	USD
CY2018Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	279459000	USD
CY2017Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	266592000	USD
CY2019Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	286340000	USD
CY2018Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	325092000	USD
	us-gaap	Prior Period Reclassification Adjustment Description PriorPeriodReclassificationAdjustmentDescription	<div style="line-height:120%;text-align:left;text-indent:48px;font-size:10pt;"><span style="font-family:Arial;font-size:10pt;">Certain reclassifications were made to previously reported amounts in the consolidated financial statements and notes thereto to make them consistent with the current presentation format.</span></div>
CY2018Q4	us-gaap	Capitalized Contract Cost Net Noncurrent CapitalizedContractCostNetNoncurrent	38574000	USD
CY2019Q3	us-gaap	Deposits Assets Noncurrent DepositsAssetsNoncurrent	12544000	USD
CY2018Q4	us-gaap	Deposits Assets Noncurrent DepositsAssetsNoncurrent	12544000	USD
CY2019Q3	us-gaap	Nontrade Receivables Noncurrent NontradeReceivablesNoncurrent	26702000	USD
CY2018Q4	us-gaap	Nontrade Receivables Noncurrent NontradeReceivablesNoncurrent	0	USD
	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 2 — Company Overview</span></div><div style="line-height:120%;font-size:10pt;"><span style="font-family:Arial;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 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 and methodologies that we believe are critical to maximizing production economics. Our services cover the lifecycle of an offshore oil or gas field. We provide services primarily in deepwater in the Gulf of Mexico, Brazil, North Sea, Asia Pacific and West Africa regions. 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 12).</span></div><div style="line-height:120%;font-size:10pt;"><span style="font-family:Arial;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;">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 H</span><span style="font-family:Arial;font-size:10pt;">elix </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 2</span><span style="font-family:Arial;font-size:10pt;">. We also have a semi-submersible well intervention vessel under completion, the </span><span style="font-family:Arial;font-size:10pt;font-style:italic;">Q7000</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:Arial;font-size:10pt;"> </span></div><div style="line-height:120%;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>three</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</span><span style="font-family:Arial;font-size:10pt;">, 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.</span></div><div style="line-height:120%;font-size:10pt;"><span style="font-family:Arial;font-size:10pt;"> </span></div><div style="line-height:120%;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 4), and several wells and related infrastructure associated with the Droshky Prospect that we acquired from Marathon Oil Corporation (“Marathon Oil”) on January 18, 2019. 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:Arial;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 condensed consolidated balance sheet (Note 3). Goodwill is related to the synergies expected from the acquisition. The ultimate fair values of acquired assets, liabilities and noncontrolling interests are provisional and pending final assessment of the valuations. STL is included in our Well Intervention segment (Note 12) and its revenue and earnings are immaterial to our consolidated results.</span></div>
	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	3	segment
CY2019Q3	us-gaap	Contract With Customer Asset Net Current ContractWithCustomerAssetNetCurrent	580000	USD
CY2018Q4	us-gaap	Contract With Customer Asset Net Current ContractWithCustomerAssetNetCurrent	5829000	USD
CY2019Q3	us-gaap	Prepaid Expense Current PrepaidExpenseCurrent	14876000	USD
CY2018Q4	us-gaap	Prepaid Expense Current PrepaidExpenseCurrent	10306000	USD
CY2019Q3	us-gaap	Capitalized Contract Cost Net Current CapitalizedContractCostNetCurrent	26424000	USD
CY2018Q4	us-gaap	Capitalized Contract Cost Net Current CapitalizedContractCostNetCurrent	27368000	USD
CY2019Q3	us-gaap	Nontrade Receivables Current NontradeReceivablesCurrent	13000000	USD
CY2018Q4	us-gaap	Nontrade Receivables Current NontradeReceivablesCurrent	0	USD
CY2019Q3	us-gaap	Other Assets Miscellaneous Current OtherAssetsMiscellaneousCurrent	6871000	USD
CY2018Q4	us-gaap	Other Assets Miscellaneous Current OtherAssetsMiscellaneousCurrent	8091000	USD
CY2019Q3	us-gaap	Other Assets Current OtherAssetsCurrent	61751000	USD
CY2018Q4	us-gaap	Other Assets Current OtherAssetsCurrent	51594000	USD
CY2019Q3	us-gaap	Prepaid Expense Noncurrent PrepaidExpenseNoncurrent	861000	USD
CY2018Q4	us-gaap	Prepaid Expense Noncurrent PrepaidExpenseNoncurrent	5896000	USD
CY2019Q3	hlx	Deferred Recertification And Dry Dock Costs Net DeferredRecertificationAndDryDockCostsNet	16678000	USD
CY2018Q4	hlx	Deferred Recertification And Dry Dock Costs Net DeferredRecertificationAndDryDockCostsNet	8525000	USD
CY2019Q3	us-gaap	Capitalized Contract Cost Net Noncurrent CapitalizedContractCostNetNoncurrent	20695000	USD
CY2019Q3	us-gaap	Goodwill Goodwill	6637000	USD
CY2018Q4	us-gaap	Goodwill Goodwill	0	USD
CY2019Q3	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	3703000	USD
CY2018Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	1402000	USD
CY2019Q3	us-gaap	Other Assets Miscellaneous Noncurrent OtherAssetsMiscellaneousNoncurrent	2503000	USD
CY2018Q4	us-gaap	Other Assets Miscellaneous Noncurrent OtherAssetsMiscellaneousNoncurrent	3116000	USD
CY2019Q3	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	90323000	USD
CY2018Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	70057000	USD
CY2019Q3	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	25853000	USD
CY2018Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	43079000	USD
CY2019Q3	hlx	Investee Losses In Excess Of Investment Current InvesteeLossesInExcessOfInvestmentCurrent	7638000	USD
CY2018Q4	hlx	Investee Losses In Excess Of Investment Current InvesteeLossesInExcessOfInvestmentCurrent	5125000	USD
CY2019Q3	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	10814000	USD
CY2018Q4	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	10103000	USD
CY2019Q3	us-gaap	Asset Retirement Obligation Current AssetRetirementObligationCurrent	11556000	USD
CY2018Q4	us-gaap	Asset Retirement Obligation Current AssetRetirementObligationCurrent	0	USD
CY2019Q3	us-gaap	Hedging Liabilities Current HedgingLiabilitiesCurrent	2723000	USD
CY2018Q4	us-gaap	Hedging Liabilities Current HedgingLiabilitiesCurrent	9311000	USD
CY2019Q3	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	13398000	USD
CY2018Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	17976000	USD
CY2019Q3	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	71982000	USD
CY2018Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	85594000	USD
CY2019Q3	hlx	Investee Losses In Excess Of Investment Noncurrent InvesteeLossesInExcessOfInvestmentNoncurrent	0	USD
CY2018Q4	hlx	Investee Losses In Excess Of Investment Noncurrent InvesteeLossesInExcessOfInvestmentNoncurrent	6035000	USD
CY2019Q3	us-gaap	Deferred Gain On Sale Of Property DeferredGainOnSaleOfProperty	0	USD
CY2018Q4	us-gaap	Deferred Gain On Sale Of Property DeferredGainOnSaleOfProperty	5052000	USD
CY2019Q3	us-gaap	Contract With Customer Liability Noncurrent ContractWithCustomerLiabilityNoncurrent	9196000	USD
CY2018Q4	us-gaap	Contract With Customer Liability Noncurrent ContractWithCustomerLiabilityNoncurrent	15767000	USD
CY2019Q3	us-gaap	Asset Retirement Obligations Noncurrent AssetRetirementObligationsNoncurrent	27564000	USD
CY2018Q4	us-gaap	Asset Retirement Obligations Noncurrent AssetRetirementObligationsNoncurrent	0	USD
CY2019Q3	us-gaap	Derivative Liabilities Noncurrent DerivativeLiabilitiesNoncurrent	0	USD
CY2018Q4	us-gaap	Derivative Liabilities Noncurrent DerivativeLiabilitiesNoncurrent	884000	USD
CY2019Q3	us-gaap	Other Accrued Liabilities Noncurrent OtherAccruedLiabilitiesNoncurrent	2248000	USD
CY2018Q4	us-gaap	Other Accrued Liabilities Noncurrent OtherAccruedLiabilitiesNoncurrent	11800000	USD
CY2019Q3	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	39008000	USD
CY2018Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	39538000	USD
CY2019Q3	us-gaap	Lessee Operating Lease Term Of Contract LesseeOperatingLeaseTermOfContract	P15Y
CY2019Q3	us-gaap	Operating Lease Cost OperatingLeaseCost	18002000	USD
	us-gaap	Operating Lease Cost OperatingLeaseCost	54191000	USD
CY2019Q3	us-gaap	Variable Lease Cost VariableLeaseCost	3630000	USD
	us-gaap	Variable Lease Cost VariableLeaseCost	9927000	USD
CY2019Q3	us-gaap	Short Term Lease Cost ShortTermLeaseCost	5587000	USD
	us-gaap	Short Term Lease Cost ShortTermLeaseCost	14549000	USD
CY2019Q3	us-gaap	Sublease Income SubleaseIncome	351000	USD
	us-gaap	Sublease Income SubleaseIncome	1077000	USD
CY2019Q3	us-gaap	Lease Cost LeaseCost	26868000	USD
	us-gaap	Lease Cost LeaseCost	77590000	USD
CY2019Q3	us-gaap	Lessee Operating Lease Liability Payments Remainder Of Fiscal Year LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear	17133000	USD
CY2019Q3	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	66333000	USD
CY2019Q3	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	60175000	USD
CY2019Q3	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	57208000	USD
CY2019Q3	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	39102000	USD
CY2019Q3	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	12633000	USD
CY2019Q3	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	252584000	USD
CY2019Q3	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P4Y2M12D
CY2019Q3	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	34983000	USD
CY2019Q3	us-gaap	Operating Lease Liability OperatingLeaseLiability	217601000	USD
CY2019Q3	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	52840000	USD
CY2019Q3	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	164761000	USD
CY2019Q3	us-gaap	Long Term Debt LongTermDebt	413400000	USD
CY2019Q3	us-gaap	Long Term Debt Current LongTermDebtCurrent	108468000	USD
CY2019Q3	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0754
	us-gaap	Operating Lease Payments OperatingLeasePayments	54538000	USD
	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	921000	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 Four Years OperatingLeasesFutureMinimumPaymentsDueInFourYears	95435000	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
CY2019Q3	us-gaap	Long Term Debt Maturities Repayments Of Principal In Next Rolling Twelve Months LongTermDebtMaturitiesRepaymentsOfPrincipalInNextRollingTwelveMonths	108914000	USD
CY2019Q3	us-gaap	Long Term Debt Maturities Repayments Of Principal In Rolling Year Two LongTermDebtMaturitiesRepaymentsOfPrincipalInRollingYearTwo	11060000	USD
CY2019Q3	us-gaap	Long Term Debt Maturities Repayments Of Principal In Rolling Year Three LongTermDebtMaturitiesRepaymentsOfPrincipalInRollingYearThree	160062000	USD
CY2019Q3	us-gaap	Long Term Debt Maturities Repayments Of Principal In Rolling Year Four LongTermDebtMaturitiesRepaymentsOfPrincipalInRollingYearFour	133333000	USD
CY2019Q3	us-gaap	Long Term Debt Maturities Repayments Of Principal In Rolling Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalInRollingYearFive	8749000	USD
CY2019Q3	us-gaap	Long Term Debt Maturities Repayments Of Principal In Rolling After Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalInRollingAfterYearFive	23831000	USD
CY2019Q3	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	445949000	USD
CY2019Q3	us-gaap	Debt Instrument Unamortized Discount DebtInstrumentUnamortizedDiscount	24160000	USD
CY2019Q3	us-gaap	Deferred Finance Costs Noncurrent Net DeferredFinanceCostsNoncurrentNet	8389000	USD
CY2019Q3	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	304932000	USD
CY2019Q3	us-gaap	Interest Expense InterestExpense	7694000	USD
CY2018Q3	us-gaap	Interest Expense InterestExpense	8171000	USD
	us-gaap	Interest Expense InterestExpense	23635000	USD
	us-gaap	Interest Expense InterestExpense	24511000	USD
CY2019Q3	us-gaap	Interest Income Other InterestIncomeOther	652000	USD
CY2018Q3	us-gaap	Interest Income Other InterestIncomeOther	994000	USD
	us-gaap	Interest Income Other InterestIncomeOther	2085000	USD
	us-gaap	Interest Income Other InterestIncomeOther	2263000	USD
CY2019Q3	us-gaap	Interest Costs Capitalized Adjustment InterestCostsCapitalizedAdjustment	5141000	USD
CY2018Q3	us-gaap	Interest Costs Capitalized Adjustment InterestCostsCapitalizedAdjustment	3928000	USD
	us-gaap	Interest Costs Capitalized Adjustment InterestCostsCapitalizedAdjustment	15346000	USD
	us-gaap	Interest Costs Capitalized Adjustment InterestCostsCapitalizedAdjustment	11504000	USD
CY2019Q3	us-gaap	Interest Income Expense Nonoperating Net InterestIncomeExpenseNonoperatingNet	-1901000	USD
CY2018Q3	us-gaap	Interest Income Expense Nonoperating Net InterestIncomeExpenseNonoperatingNet	-3249000	USD
	us-gaap	Interest Income Expense Nonoperating Net InterestIncomeExpenseNonoperatingNet	-6204000	USD
	us-gaap	Interest Income Expense Nonoperating Net InterestIncomeExpenseNonoperatingNet	-10744000	USD
CY2019Q3	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.101
	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.119
CY2018Q3	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.030
	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.028
CY2019Q3	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2018Q3	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2019Q3	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	-0.101
CY2018Q3	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	-0.185
	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	-0.097
	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	-0.191
CY2019Q3	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.008
CY2018Q3	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.005
	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.006
	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.009
CY2019Q3	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.101
CY2018Q3	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.030
	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.119
	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.028
CY2019Q3	us-gaap	Accumulated Other Comprehensive Income Loss Foreign Currency Translation Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax	-74419000	USD
CY2018Q4	us-gaap	Accumulated Other Comprehensive Income Loss Foreign Currency Translation Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax	-69855000	USD
CY2019Q3	us-gaap	Accumulated Other Comprehensive Income Loss Cumulative Changes In Net Gain Loss From Cash Flow Hedges Effect Net Of Tax AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax	-781000	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
CY2019Q3	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-75200000	USD
CY2018Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-73964000	USD
CY2019Q3	us-gaap	Deferred Tax Assets Other Comprehensive Loss DeferredTaxAssetsOtherComprehensiveLoss	200000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Other Comprehensive Loss DeferredTaxAssetsOtherComprehensiveLoss	1000000.0	USD
CY2019Q3	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	212609000	USD
CY2018Q3	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	212575000	USD
CY2018Q4	us-gaap	Contract With Customer Asset Net ContractWithCustomerAssetNet	5800000	USD
CY2019Q3	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	20000000.0	USD
CY2018Q4	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	25900000	USD
CY2019Q3	us-gaap	Contract With Customer Liability Revenue Recognized ContractWithCustomerLiabilityRevenueRecognized	4000000.0	USD
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	581160000	USD
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	581462000	USD
CY2019Q3	us-gaap	Contract With Customer Asset Net ContractWithCustomerAssetNet	600000	USD
	us-gaap	Contract With Customer Liability Revenue Recognized ContractWithCustomerLiabilityRevenueRecognized	7400000	USD
CY2018Q3	us-gaap	Contract With Customer Liability Revenue Recognized ContractWithCustomerLiabilityRevenueRecognized	7400000	USD
	us-gaap	Contract With Customer Liability Revenue Recognized ContractWithCustomerLiabilityRevenueRecognized	10800000	USD
CY2019Q3	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	833800000	USD
CY2019Q3	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	114500000	USD
CY2019Q3	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	443200000	USD
CY2019Q3	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	276100000	USD
CY2019Q3	us-gaap	Capitalized Contract Cost Net CapitalizedContractCostNet	47100000	USD
CY2018Q4	us-gaap	Capitalized Contract Cost Net CapitalizedContractCostNet	65900000	USD
CY2019Q3	us-gaap	Capitalized Contract Cost Amortization CapitalizedContractCostAmortization	7700000	USD
	us-gaap	Capitalized Contract Cost Amortization CapitalizedContractCostAmortization	23600000	USD
CY2018Q3	us-gaap	Capitalized Contract Cost Amortization CapitalizedContractCostAmortization	8500000	USD
	us-gaap	Capitalized Contract Cost Amortization CapitalizedContractCostAmortization	25600000	USD
CY2019Q3	us-gaap	Net Income Loss NetIncomeLoss	31695000	USD
CY2018Q3	us-gaap	Net Income Loss NetIncomeLoss	27121000	USD
CY2019Q3	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Basic UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	261000	USD
CY2018Q3	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Basic UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	260000	USD
CY2019Q3	hlx	Accretion Of Redeemable Noncontrolling Interests AccretionOfRedeemableNoncontrollingInterests	25000	USD
CY2018Q3	hlx	Accretion Of Redeemable Noncontrolling Interests AccretionOfRedeemableNoncontrollingInterests	0	USD
CY2019Q3	us-gaap	Undistributed Earnings UndistributedEarnings	31409000	USD
CY2019Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	147575000	shares
CY2018Q3	us-gaap	Undistributed Earnings UndistributedEarnings	26861000	USD
CY2018Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	146700000	shares
CY2019Q3	us-gaap	Undistributed Earnings UndistributedEarnings	31409000	USD
CY2019Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	147575000	shares
CY2018Q3	us-gaap	Undistributed Earnings UndistributedEarnings	26861000	USD
CY2018Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	146700000	shares
CY2019Q3	us-gaap	Amount Of Dilutive Securities Stock Options And Restrictive Stock Units AmountOfDilutiveSecuritiesStockOptionsAndRestrictiveStockUnits	0	USD
CY2019Q3	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	779000	shares
CY2018Q3	us-gaap	Amount Of Dilutive Securities Stock Options And Restrictive Stock Units AmountOfDilutiveSecuritiesStockOptionsAndRestrictiveStockUnits	0	USD
CY2018Q3	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	264000	shares
CY2018Q3	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Diluted UndistributedEarningsLossAllocatedToParticipatingSecuritiesDiluted	0	USD
CY2019Q3	us-gaap	Net Income Loss Attributable To Parent Diluted NetIncomeLossAttributableToParentDiluted	31410000	USD
CY2019Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	148354000	shares
CY2018Q3	us-gaap	Net Income Loss Attributable To Parent Diluted NetIncomeLossAttributableToParentDiluted	26861000	USD
CY2018Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	146964000	shares
CY2019Q3	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Diluted UndistributedEarningsLossAllocatedToParticipatingSecuritiesDiluted	-1000	USD
	us-gaap	Net Income Loss NetIncomeLoss	49867000	USD
	us-gaap	Net Income Loss NetIncomeLoss	42345000	USD
	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Basic UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	435000	USD
	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Basic UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	407000	USD
	hlx	Accretion Of Redeemable Noncontrolling Interests AccretionOfRedeemableNoncontrollingInterests	43000	USD
	hlx	Accretion Of Redeemable Noncontrolling Interests AccretionOfRedeemableNoncontrollingInterests	0	USD
	us-gaap	Undistributed Earnings UndistributedEarnings	49389000	USD
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	147506000	shares
	us-gaap	Undistributed Earnings UndistributedEarnings	41938000	USD
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	146679000	shares
	us-gaap	Undistributed Earnings UndistributedEarnings	49389000	USD
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	147506000	shares
	us-gaap	Undistributed Earnings UndistributedEarnings	41938000	USD
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	146679000	shares
	us-gaap	Amount Of Dilutive Securities Stock Options And Restrictive Stock Units AmountOfDilutiveSecuritiesStockOptionsAndRestrictiveStockUnits	0	USD
	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	580000	shares
	us-gaap	Amount Of Dilutive Securities Stock Options And Restrictive Stock Units AmountOfDilutiveSecuritiesStockOptionsAndRestrictiveStockUnits	0	USD
	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	82000	shares
	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Diluted UndistributedEarningsLossAllocatedToParticipatingSecuritiesDiluted	-2000	USD
	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Diluted UndistributedEarningsLossAllocatedToParticipatingSecuritiesDiluted	0	USD
	us-gaap	Net Income Loss Attributable To Parent Diluted NetIncomeLossAttributableToParentDiluted	49391000	USD
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	148086000	shares
	us-gaap	Net Income Loss Attributable To Parent Diluted NetIncomeLossAttributableToParentDiluted	41938000	USD
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	146761000	shares
	hlx	Number Of Active Incentive Plans NumberOfActiveIncentivePlans	1
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	581462000	USD
	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	3	segment
CY2019Q3	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	212609000	USD
CY2018Q3	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	212575000	USD
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	581160000	USD
CY2019Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	38998000	USD
CY2018Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	31377000	USD
	us-gaap	Operating Income Loss OperatingIncomeLoss	62339000	USD
	us-gaap	Operating Income Loss OperatingIncomeLoss	55033000	USD
CY2019Q3	us-gaap	Assets Assets	2613511000	USD
CY2018Q4	us-gaap	Assets Assets	2347730000	USD
CY2018Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	0	USD
	us-gaap	Asset Retirement Obligation Liabilities Incurred AssetRetirementObligationLiabilitiesIncurred	53294000	USD
	us-gaap	Asset Retirement Obligation Liabilities Settled AssetRetirementObligationLiabilitiesSettled	15944000	USD
	us-gaap	Asset Retirement Obligation Accretion Expense AssetRetirementObligationAccretionExpense	1770000	USD
CY2019Q3	us-gaap	Asset Retirement Obligation AssetRetirementObligation	39120000	USD
	us-gaap	Interest Paid Net InterestPaidNet	2404000	USD
	us-gaap	Interest Paid Net InterestPaidNet	6620000	USD
	us-gaap	Income Taxes Paid IncomeTaxesPaid	7535000	USD
	us-gaap	Income Taxes Paid IncomeTaxesPaid	4699000	USD
	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	14000000.0	USD
CY2018	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	9900000	USD
CY2019Q3	us-gaap	Derivative Instruments In Hedges Assets At Fair Value DerivativeInstrumentsInHedgesAssetsAtFairValue	108000	USD
CY2018Q4	us-gaap	Derivative Instruments In Hedges Assets At Fair Value DerivativeInstrumentsInHedgesAssetsAtFairValue	1064000	USD
CY2019Q3	us-gaap	Derivative Instruments In Hedges Liabilities At Fair Value DerivativeInstrumentsInHedgesLiabilitiesAtFairValue	1089000	USD
CY2018Q4	us-gaap	Derivative Instruments In Hedges Liabilities At Fair Value DerivativeInstrumentsInHedgesLiabilitiesAtFairValue	6211000	USD
CY2019Q3	us-gaap	Derivative Instruments Not Designated As Hedging Instruments Liability At Fair Value DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsLiabilityAtFairValue	1634000	USD
CY2018Q4	us-gaap	Derivative Instruments Not Designated As Hedging Instruments Liability At Fair Value DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsLiabilityAtFairValue	3984000	USD
	us-gaap	Cash Flow Hedge Gain Loss To Be Reclassified Within Twelve Months CashFlowHedgeGainLossToBeReclassifiedWithinTwelveMonths	-800000	USD
CY2019Q3	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax	-274000	USD
CY2018Q3	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax	-88000	USD
	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax	-701000	USD
	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax	839000	USD
CY2018Q3	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesBeforeTax	-1799000	USD
CY2019Q3	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesBeforeTax	-1046000	USD
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesBeforeTax	-4867000	USD
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesBeforeTax	-5233000	USD
CY2019Q3	us-gaap	Derivative Gain Loss On Derivative Net DerivativeGainLossOnDerivativeNet	-371000	USD
CY2018Q3	us-gaap	Derivative Gain Loss On Derivative Net DerivativeGainLossOnDerivativeNet	-83000	USD
	us-gaap	Derivative Gain Loss On Derivative Net DerivativeGainLossOnDerivativeNet	-413000	USD
	us-gaap	Derivative Gain Loss On Derivative Net DerivativeGainLossOnDerivativeNet	-26000	USD

Files In Submission

Name	View Source	Status
0000866829-19-000034-index-headers.html	Edgar Link	pending
0000866829-19-000034-index.html	Edgar Link	pending
0000866829-19-000034.txt	Edgar Link	pending
0000866829-19-000034-xbrl.zip	Edgar Link	pending
FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xlsx	Edgar Link	pending
hlx-20190930.xsd	Edgar Link	pending
hlx-20190930_cal.xml	Edgar Link	unprocessable
hlx-20190930_def.xml	Edgar Link	unprocessable
hlx-20190930_lab.xml	Edgar Link	unprocessable
hlx-20190930_pre.xml	Edgar Link	unprocessable
hlx09302019-10q.htm	Edgar Link	pending
hlx09302019-10q_htm.xml	Edgar Link	completed
hlx09302019-ex311.htm	Edgar Link	pending
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hlxlogo.jpg	Edgar Link	pending
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$HLX
HELIX ENERGY SOLUTIONS GROUP INC Stock $hlx

2019 Q4 Form 10-Q Financial Statement

#000086682919000034 Filed on October 23, 2019

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$HLX HELIX ENERGY SOLUTIONS GROUP INC Stock $hlx

2019 Q4 Form 10-Q Financial Statement

#000086682919000034 Filed on October 23, 2019

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$HLX
HELIX ENERGY SOLUTIONS GROUP INC Stock $hlx