$HLX
HELIX ENERGY SOLUTIONS GROUP INC Stock $hlx

$hlx Overview Financials Valuation SEC Filings Company Website

2019 Q2 Form 10-Q Financial Statement

#000086682919000026 Filed on July 26, 2019

Income Statement

Concept	2019 Q2	2018 Q2	2018 Q1
Revenue	$201.7M	$204.6M	$164.3M
YoY Change	-1.42%	36.12%	57.15%
Cost Of Revenue	$161.8M	$161.7M	$151.3M
YoY Change	0.04%	22.56%	43.59%
Gross Profit	$39.93M	$42.90M	$12.98M
YoY Change	-6.91%	133.55%	-1673.7%
Gross Profit Margin	19.8%	20.96%	7.9%
Selling, General & Admin	$16.86M	$18.13M	$14.10M
YoY Change	-6.97%	36.1%	-16.28%
% of Gross Profit	42.22%	42.25%	108.6%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$28.00M	$27.90M	$27.78M
YoY Change	0.36%	9.41%	-9.97%
% of Gross Profit	70.12%	65.04%	213.99%
Operating Expenses	$16.86M	$18.13M	$14.10M
YoY Change	-6.97%	36.1%	-16.28%
Operating Profit	$23.07M	$24.77M	-$1.116M
YoY Change	-6.86%	390.53%	-93.7%
Interest Expense	$8.045M	$8.041M	$8.299M
YoY Change	0.05%	-30.72%	-18.96%
% of Operating Profit	34.87%	32.46%
Other Income/Expense, Net	-$1.311M	-$3.441M	$925.0K
YoY Change	-61.9%	-836.83%	-272.9%
Pretax Income	$19.70M	$18.08M	-$2.473M
YoY Change	8.94%	-1410.29%	-88.23%
Income Tax	$2.876M	$298.0K	$87.00K
% Of Pretax Income	14.6%	1.65%
Net Earnings	$16.85M	$17.78M	-$2.560M
YoY Change	-5.23%	-377.74%	-84.4%
Net Earnings / Revenue	8.35%	8.69%	-1.56%
Basic Earnings Per Share	$0.11	$0.12	-$0.02
Diluted Earnings Per Share	$0.11	$0.12	-$0.02
COMMON SHARES
Basic Shares Outstanding	147.5M shares	146.7M shares	146.7M shares
Diluted Shares Outstanding	148.1M shares	146.7M shares	146.7M shares

Balance Sheet

Concept	2019 Q2	2018 Q2	2018 Q1
SHORT-TERM ASSETS
Cash & Short-Term Investments	$261.1M	$288.5M	$274.0M
YoY Change	-9.5%	-26.1%	-49.04%
Cash & Equivalents	$261.1M	$288.5M	$274.0M
Short-Term Investments
Other Short-Term Assets	$77.76M	$51.52M	$46.24M
YoY Change	50.94%	28.14%	6.44%
Inventory
Prepaid Expenses	$15.22M
Receivables	$79.92M	$79.79M	$77.96M
Other Receivables	$26.00M	$2.000M	$0.00
Total Short-Term Assets	$489.9M	$496.7M	$441.5M
YoY Change	-1.36%	-10.42%	-32.89%
LONG-TERM ASSETS
Property, Plant & Equipment	$1.804B	$1.784B	$1.802B
YoY Change	1.12%	4.26%	6.78%
Goodwill	$6.763M
YoY Change
Intangibles
YoY Change
Long-Term Investments
YoY Change
Other Assets	$98.71M	$85.82M	$95.39M
YoY Change	15.01%	-10.27%	10.2%
Total Long-Term Assets	$2.130B	$1.870B	$1.898B
YoY Change	13.91%	3.49%	6.94%
TOTAL ASSETS
Total Short-Term Assets	$489.9M	$496.7M	$441.5M
Total Long-Term Assets	$2.130B	$1.870B	$1.898B
Total Assets	$2.620B	$2.367B	$2.339B
YoY Change	10.71%	0.22%	-3.83%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$76.54M	$69.62M	$71.72M
YoY Change	9.93%	-19.6%	-4.0%
Accrued Expenses	$84.61M	$81.09M	$64.40M
YoY Change	4.35%	34.88%	10.99%
Deferred Revenue	$11.24M
YoY Change
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due	$117.0M	$46.15M	$46.49M
YoY Change	153.59%	-56.95%	-31.35%
Total Short-Term Liabilities	$332.6M	$198.3M	$182.6M
YoY Change	67.71%	-21.89%	-8.9%
LONG-TERM LIABILITIES
Long-Term Debt	$307.5M	$412.9M	$420.9M
YoY Change	-25.53%	1.13%	-22.3%
Other Long-Term Liabilities	$41.28M	$46.70M	$38.10M
YoY Change	-11.6%	-0.48%	-23.72%
Total Long-Term Liabilities	$348.7M	$459.6M	$459.0M
YoY Change	-24.11%	0.96%	-22.42%
TOTAL LIABILITIES
Total Short-Term Liabilities	$332.6M	$198.3M	$182.6M
Total Long-Term Liabilities	$348.7M	$459.6M	$459.0M
Total Liabilities	$968.4M	$764.5M	$750.1M
YoY Change	26.68%	-11.51%	-20.22%
SHAREHOLDERS EQUITY
Retained Earnings	$405.7M	$369.7M	$351.9M
YoY Change	9.76%	23.2%	14.83%
Common Stock	$1.314B	$1.304B	$1.301B
YoY Change	0.78%	1.94%	1.93%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$1.648B	$1.602B	$1.589B
YoY Change
Total Liabilities & Shareholders Equity	$2.620B	$2.367B	$2.339B
YoY Change	10.71%	0.22%	-3.83%

Cashflow Statement

Concept	2019 Q2	2018 Q2	2018 Q1
OPERATING ACTIVITIES
Net Income	$16.85M	$17.78M	-$2.560M
YoY Change	-5.23%	-377.74%	-84.4%
Depreciation, Depletion And Amortization	$28.00M	$27.90M	$27.78M
YoY Change	0.36%	9.41%	-9.97%
Cash From Operating Activities	$66.80M	$46.70M	$41.00M
YoY Change	43.04%	-453.79%	42.36%
INVESTING ACTIVITIES
Capital Expenditures	-$15.80M	-$20.80M	-$21.20M
YoY Change	-24.04%	-55.17%	-55.83%
Acquisitions
YoY Change
Other Investing Activities	-$1.300M	$0.00	$0.00
YoY Change		-100.0%
Cash From Investing Activities	-$17.00M	-$20.80M	-$21.20M
YoY Change	-18.27%	-42.86%	-55.83%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net			$0.00
YoY Change			-100.0%
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-8.400M	-10.20M	-12.80M
YoY Change	-17.65%	-89.62%	-106.4%
NET CHANGE
Cash From Operating Activities	66.80M	46.70M	41.00M
Cash From Investing Activities	-17.00M	-20.80M	-21.20M
Cash From Financing Activities	-8.400M	-10.20M	-12.80M
Net Change In Cash	41.40M	15.70M	7.000M
YoY Change	163.69%	-110.62%	-96.13%
FREE CASH FLOW
Cash From Operating Activities	$66.80M	$46.70M	$41.00M
Capital Expenditures	-$15.80M	-$20.80M	-$21.20M
Free Cash Flow	$82.60M	$67.50M	$62.20M
YoY Change	22.37%	103.31%	-19.01%

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	Q2
	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2019
	dei	Entity Central Index Key EntityCentralIndexKey	0000866829
CY2018Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	0	USD
CY2019Q2	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	0	USD
CY2018Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	240000000	shares
CY2019Q2	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	240000000	shares
CY2018Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	148203000	shares
CY2019Q2	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	148759000	shares
	dei	Document Type DocumentType	10-Q
	dei	Document Quarterly Report DocumentQuarterlyReport	true
	dei	Document Period End Date DocumentPeriodEndDate	2019-06-30
	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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CY2019Q2	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesBeforeTax	-1975000	USD
CY2018Q2	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesBeforeTax	-1807000	USD
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesBeforeTax	-3821000	USD
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesBeforeTax	-3434000	USD
CY2019Q2	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesTax	340000	USD
CY2018Q2	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesTax	126000	USD
	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesTax	682000	USD
	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesTax	941000	USD
CY2019Q2	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	1357000	USD
CY2018Q2	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	455000	USD
	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	2712000	USD
	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	3420000	USD
CY2019Q2	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Before Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeTax	0	USD
CY2018Q2	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
CY2019Q2	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax	0	USD
CY2018Q2	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
CY2019Q2	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	0	USD
CY2018Q2	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
CY2019Q2	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-3065000	USD
CY2018Q2	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-7547000	USD
	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-263000	USD
	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-2856000	USD
CY2019Q2	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-1708000	USD
CY2018Q2	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-7092000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	2449000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	67000	USD
CY2019Q2	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	15115000	USD
CY2018Q2	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	10692000	USD
	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	20590000	USD
	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	15291000	USD
CY2019Q2	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	-31000	USD
CY2018Q2	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	-31000	USD
	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	0	USD
CY2019Q2	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	15146000	USD
CY2018Q2	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	10692000	USD
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	20621000	USD
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	15291000	USD
CY2019Q1	us-gaap	Stockholders Equity StockholdersEquity	1629843000	USD
CY2019Q1	us-gaap	Redeemable Noncontrolling Interest Equity Carrying Amount RedeemableNoncontrollingInterestEquityCarryingAmount	0	USD
CY2019Q2	us-gaap	Net Income Loss NetIncomeLoss	16854000	USD
CY2019Q2	us-gaap	Net Income Loss Attributable To Redeemable Noncontrolling Interest NetIncomeLossAttributableToRedeemableNoncontrollingInterest	-31000	USD
CY2019Q2	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-3065000	USD
CY2019Q2	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	1357000	USD
CY2019Q2	us-gaap	Noncontrolling Interest Increase From Subsidiary Equity Issuance NoncontrollingInterestIncreaseFromSubsidiaryEquityIssuance	3396000	USD
CY2019Q2	hlx	Accretion Of Redeemable Noncontrolling Interests AccretionOfRedeemableNoncontrollingInterests	18000	USD
CY2019Q2	us-gaap	Temporary Equity Accretion To Redemption Value TemporaryEquityAccretionToRedemptionValue	18000	USD
CY2019Q2	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	-320000	USD
CY2019Q2	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	3745000	USD
CY2019Q2	us-gaap	Stockholders Equity StockholdersEquity	1648396000	USD
CY2019Q2	us-gaap	Redeemable Noncontrolling Interest Equity Carrying Amount RedeemableNoncontrollingInterestEquityCarryingAmount	3383000	USD
CY2018Q1	us-gaap	Stockholders Equity StockholdersEquity	1589018000	USD
CY2018Q2	us-gaap	Net Income Loss NetIncomeLoss	17784000	USD
CY2018Q2	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-7547000	USD
CY2018Q2	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	455000	USD
CY2018Q2	us-gaap	Adjustments To Additional Paid In Capital Equity Component Of Convertible Debt AdjustmentsToAdditionalPaidInCapitalEquityComponentOfConvertibleDebt	-11000	USD
CY2018Q2	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	211000	USD
CY2018Q2	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	2484000	USD
CY2018Q2	us-gaap	Stockholders Equity StockholdersEquity	1602394000	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	18172000	USD
CY2019Q1	us-gaap	Net Income Loss Attributable To Redeemable Noncontrolling Interest NetIncomeLossAttributableToRedeemableNoncontrollingInterest	-31000	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	-263000	USD
	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	2712000	USD
	us-gaap	Noncontrolling Interest Increase From Subsidiary Equity Issuance NoncontrollingInterestIncreaseFromSubsidiaryEquityIssuance	3396000	USD
	hlx	Accretion Of Redeemable Noncontrolling Interests AccretionOfRedeemableNoncontrollingInterests	18000	USD
	us-gaap	Temporary Equity Accretion To Redemption Value TemporaryEquityAccretionToRedemptionValue	18000	USD
	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	-979000	USD
	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	6433000	USD
CY2019Q2	us-gaap	Stockholders Equity StockholdersEquity	1648396000	USD
CY2019Q2	us-gaap	Redeemable Noncontrolling Interest Equity Carrying Amount RedeemableNoncontrollingInterestEquityCarryingAmount	3383000	USD
CY2017Q4	us-gaap	Stockholders Equity StockholdersEquity	1567393000	USD
	us-gaap	Net Income Loss NetIncomeLoss	15224000	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	-2856000	USD
	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	3420000	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	15413000	USD
	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	-651000	USD
	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	4947000	USD
CY2018Q2	us-gaap	Stockholders Equity StockholdersEquity	1602394000	USD
	us-gaap	Profit Loss ProfitLoss	18141000	USD
	us-gaap	Profit Loss ProfitLoss	15224000	USD
	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	56512000	USD
	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	55659000	USD
	us-gaap	Amortization Of Debt Discount Premium AmortizationOfDebtDiscountPremium	3070000	USD
	us-gaap	Amortization Of Debt Discount Premium AmortizationOfDebtDiscountPremium	2659000	USD
	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	1896000	USD
	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	1799000	USD
	us-gaap	Share Based Compensation ShareBasedCompensation	6501000	USD
	us-gaap	Share Based Compensation ShareBasedCompensation	5022000	USD
	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	845000	USD
	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-1622000	USD
	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-69000	USD
	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-271000	USD
	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-18000	USD
	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-1181000	USD
	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	1740000	USD
	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	1554000	USD
	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	30656000	USD
	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	14319000	USD
	us-gaap	Increase Decrease In Other Current Assets IncreaseDecreaseInOtherCurrentAssets	2957000	USD
	us-gaap	Increase Decrease In Other Current Assets IncreaseDecreaseInOtherCurrentAssets	9662000	USD
	us-gaap	Increase Decrease In Accrued Income Taxes Payable IncreaseDecreaseInAccruedIncomeTaxesPayable	-3122000	USD
	us-gaap	Increase Decrease In Accrued Income Taxes Payable IncreaseDecreaseInAccruedIncomeTaxesPayable	-1445000	USD
	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	97000	USD
	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	9202000	USD
	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	16113000	USD
	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	-25251000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities Continuing Operations NetCashProvidedByUsedInOperatingActivitiesContinuingOperations	32561000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities Continuing Operations NetCashProvidedByUsedInOperatingActivitiesContinuingOperations	87666000	USD
	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	27458000	USD
	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	41969000	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	2525000	USD
	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	0	USD
	us-gaap	Net Cash Provided By Used In Investing Activities Continuing Operations NetCashProvidedByUsedInInvestingActivitiesContinuingOperations	-29014000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities Continuing Operations NetCashProvidedByUsedInInvestingActivitiesContinuingOperations	-41969000	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	60362000	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	33692000	USD
	us-gaap	Repayments Of Other Long Term Debt RepaymentsOfOtherLongTermDebt	61936000	USD
	us-gaap	Repayments Of Secured Debt RepaymentsOfSecuredDebt	17857000	USD
	us-gaap	Repayments Of Secured Debt RepaymentsOfSecuredDebt	17857000	USD
	hlx	Repayments Of Long Term Secured Debt RepaymentsOfLongTermSecuredDebt	3387000	USD
	hlx	Repayments Of Long Term Secured Debt RepaymentsOfLongTermSecuredDebt	3226000	USD
	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	1485000	USD
	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	3856000	USD
	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	1329000	USD
	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	1058000	USD
	us-gaap	Proceeds From Stock Plans ProceedsFromStockPlans	281000	USD
	us-gaap	Proceeds From Stock Plans ProceedsFromStockPlans	332000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities Continuing Operations NetCashProvidedByUsedInFinancingActivitiesContinuingOperations	-22469000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities Continuing Operations NetCashProvidedByUsedInFinancingActivitiesContinuingOperations	-22963000	USD
	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	605000	USD
	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	-836000	USD
	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	-18317000	USD
	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	21898000	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
CY2019Q2	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	261142000	USD
CY2018Q2	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	288490000	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>
	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;"> ROV 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.</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 advanced to STL in December 2018. The acquisition is expected to strengthen our supply of subsea intervention systems. 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 holders 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>$6.8 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
CY2019Q2	us-gaap	Contract With Customer Asset Net Current ContractWithCustomerAssetNetCurrent	273000	USD
CY2018Q4	us-gaap	Contract With Customer Asset Net Current ContractWithCustomerAssetNetCurrent	5829000	USD
CY2019Q2	us-gaap	Prepaid Expense Current PrepaidExpenseCurrent	15222000	USD
CY2018Q4	us-gaap	Prepaid Expense Current PrepaidExpenseCurrent	10306000	USD
CY2019Q2	us-gaap	Capitalized Contract Cost Net Current CapitalizedContractCostNetCurrent	26644000	USD
CY2018Q4	us-gaap	Capitalized Contract Cost Net Current CapitalizedContractCostNetCurrent	27368000	USD
CY2019Q2	us-gaap	Nontrade Receivables Current NontradeReceivablesCurrent	26000000	USD
CY2018Q4	us-gaap	Nontrade Receivables Current NontradeReceivablesCurrent	0	USD
CY2019Q2	us-gaap	Other Assets Miscellaneous Current OtherAssetsMiscellaneousCurrent	9625000	USD
CY2018Q4	us-gaap	Other Assets Miscellaneous Current OtherAssetsMiscellaneousCurrent	8091000	USD
CY2019Q2	us-gaap	Other Assets Current OtherAssetsCurrent	77764000	USD
CY2018Q4	us-gaap	Other Assets Current OtherAssetsCurrent	51594000	USD
CY2019Q2	us-gaap	Capitalized Contract Cost Net Noncurrent CapitalizedContractCostNetNoncurrent	26832000	USD
CY2018Q4	us-gaap	Capitalized Contract Cost Net Noncurrent CapitalizedContractCostNetNoncurrent	38574000	USD
CY2019Q2	us-gaap	Deposits Assets Noncurrent DepositsAssetsNoncurrent	12544000	USD
CY2018Q4	us-gaap	Deposits Assets Noncurrent DepositsAssetsNoncurrent	12544000	USD
CY2019Q2	us-gaap	Prepaid Expense Noncurrent PrepaidExpenseNoncurrent	945000	USD
CY2018Q4	us-gaap	Prepaid Expense Noncurrent PrepaidExpenseNoncurrent	5896000	USD
CY2019Q2	hlx	Deferred Recertification And Dry Dock Costs Net DeferredRecertificationAndDryDockCostsNet	19108000	USD
CY2018Q4	hlx	Deferred Recertification And Dry Dock Costs Net DeferredRecertificationAndDryDockCostsNet	8525000	USD
CY2019Q2	us-gaap	Nontrade Receivables Noncurrent NontradeReceivablesNoncurrent	25996000	USD
CY2018Q4	us-gaap	Nontrade Receivables Noncurrent NontradeReceivablesNoncurrent	0	USD
CY2019Q2	us-gaap	Goodwill Goodwill	6763000	USD
CY2018Q4	us-gaap	Goodwill Goodwill	0	USD
CY2019Q2	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	3828000	USD
CY2018Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	1402000	USD
CY2019Q2	us-gaap	Other Assets Miscellaneous Noncurrent OtherAssetsMiscellaneousNoncurrent	2692000	USD
CY2018Q4	us-gaap	Other Assets Miscellaneous Noncurrent OtherAssetsMiscellaneousNoncurrent	3116000	USD
CY2019Q2	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	98708000	USD
CY2018Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	70057000	USD
CY2019Q2	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	22796000	USD
CY2018Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	43079000	USD
CY2019Q2	hlx	Investee Losses In Excess Of Investment Current InvesteeLossesInExcessOfInvestmentCurrent	10000000	USD
CY2018Q4	hlx	Investee Losses In Excess Of Investment Current InvesteeLossesInExcessOfInvestmentCurrent	5125000	USD
CY2019Q2	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	11240000	USD
CY2018Q4	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	10103000	USD
CY2019Q2	us-gaap	Asset Retirement Obligation Current AssetRetirementObligationCurrent	22173000	USD
CY2018Q4	us-gaap	Asset Retirement Obligation Current AssetRetirementObligationCurrent	0	USD
CY2019Q2	us-gaap	Hedging Liabilities Current HedgingLiabilitiesCurrent	4251000	USD
CY2018Q4	us-gaap	Hedging Liabilities Current HedgingLiabilitiesCurrent	9311000	USD
CY2019Q2	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	14151000	USD
CY2018Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	17976000	USD
CY2019Q2	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	84611000	USD
CY2018Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	85594000	USD
CY2019Q2	hlx	Investee Losses In Excess Of Investment Noncurrent InvesteeLossesInExcessOfInvestmentNoncurrent	0	USD
CY2018Q4	hlx	Investee Losses In Excess Of Investment Noncurrent InvesteeLossesInExcessOfInvestmentNoncurrent	6035000	USD
CY2019Q2	us-gaap	Deferred Gain On Sale Of Property DeferredGainOnSaleOfProperty	0	USD
CY2018Q4	us-gaap	Deferred Gain On Sale Of Property DeferredGainOnSaleOfProperty	5052000	USD
CY2019Q2	us-gaap	Contract With Customer Liability Noncurrent ContractWithCustomerLiabilityNoncurrent	11396000	USD
CY2018Q4	us-gaap	Contract With Customer Liability Noncurrent ContractWithCustomerLiabilityNoncurrent	15767000	USD
CY2019Q2	us-gaap	Asset Retirement Obligations Noncurrent AssetRetirementObligationsNoncurrent	26912000	USD
CY2018Q4	us-gaap	Asset Retirement Obligations Noncurrent AssetRetirementObligationsNoncurrent	0	USD
CY2019Q2	us-gaap	Derivative Liabilities Noncurrent DerivativeLiabilitiesNoncurrent	0	USD
CY2018Q4	us-gaap	Derivative Liabilities Noncurrent DerivativeLiabilitiesNoncurrent	884000	USD
CY2019Q2	us-gaap	Other Accrued Liabilities Noncurrent OtherAccruedLiabilitiesNoncurrent	2976000	USD
CY2018Q4	us-gaap	Other Accrued Liabilities Noncurrent OtherAccruedLiabilitiesNoncurrent	11800000	USD
CY2019Q2	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	41284000	USD
CY2018Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	39538000	USD
CY2019Q2	us-gaap	Lessee Operating Lease Term Of Contract LesseeOperatingLeaseTermOfContract	P15Y
CY2019Q2	us-gaap	Operating Lease Cost OperatingLeaseCost	18056000	USD
	us-gaap	Operating Lease Cost OperatingLeaseCost	36189000	USD
CY2019Q2	us-gaap	Variable Lease Cost VariableLeaseCost	3222000	USD
	us-gaap	Sublease Income SubleaseIncome	726000	USD
	us-gaap	Variable Lease Cost VariableLeaseCost	6297000	USD
CY2019Q2	us-gaap	Short Term Lease Cost ShortTermLeaseCost	4804000	USD
	us-gaap	Short Term Lease Cost ShortTermLeaseCost	8962000	USD
CY2019Q2	us-gaap	Sublease Income SubleaseIncome	373000	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
CY2019Q2	us-gaap	Lease Cost LeaseCost	25709000	USD
	us-gaap	Lease Cost LeaseCost	50722000	USD
CY2019Q2	us-gaap	Lessee Operating Lease Liability Payments Remainder Of Fiscal Year LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear	36140000	USD
CY2019Q2	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	66937000	USD
CY2019Q2	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	60369000	USD
CY2019Q2	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	57209000	USD
CY2019Q2	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	39070000	USD
CY2019Q2	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	12767000	USD
CY2019Q2	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	272492000	USD
CY2019Q2	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	39312000	USD
CY2019Q2	us-gaap	Operating Lease Liability OperatingLeaseLiability	233180000	USD
CY2019Q2	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	54449000	USD
CY2019Q2	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	178731000	USD
CY2019Q2	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P4Y4M24D
CY2019Q2	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0754
	us-gaap	Operating Lease Payments OperatingLeasePayments	35784000	USD
	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	671000	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 OperatingLeasesFutureMinimumPaymentsDue	480724000	USD
CY2019Q2	us-gaap	Long Term Debt Maturities Repayments Of Principal In Next Rolling Twelve Months LongTermDebtMaturitiesRepaymentsOfPrincipalInNextRollingTwelveMonths	117670000	USD
CY2019Q2	us-gaap	Long Term Debt Maturities Repayments Of Principal In Rolling Year Two LongTermDebtMaturitiesRepaymentsOfPrincipalInRollingYearTwo	10878000	USD
CY2019Q2	us-gaap	Long Term Debt Maturities Repayments Of Principal In Rolling Year Three LongTermDebtMaturitiesRepaymentsOfPrincipalInRollingYearThree	160746000	USD
CY2019Q2	us-gaap	Long Term Debt Maturities Repayments Of Principal In Rolling Year Four LongTermDebtMaturitiesRepaymentsOfPrincipalInRollingYearFour	8133000	USD
CY2019Q2	us-gaap	Long Term Debt Maturities Repayments Of Principal In Rolling Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalInRollingYearFive	133539000	USD
CY2019Q2	us-gaap	Long Term Debt Maturities Repayments Of Principal In Rolling After Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalInRollingAfterYearFive	28258000	USD
CY2019Q2	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	459224000	USD
CY2019Q2	us-gaap	Debt Instrument Unamortized Discount DebtInstrumentUnamortizedDiscount	25732000	USD
CY2019Q2	us-gaap	Deferred Finance Costs Noncurrent Net DeferredFinanceCostsNoncurrentNet	9004000	USD
CY2019Q2	us-gaap	Long Term Debt LongTermDebt	424488000	USD
CY2019Q2	us-gaap	Long Term Debt Current LongTermDebtCurrent	117033000	USD
CY2019Q2	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	307455000	USD
CY2019Q2	us-gaap	Interest Expense InterestExpense	8045000	USD
CY2018Q2	us-gaap	Interest Expense InterestExpense	8041000	USD
	us-gaap	Interest Expense InterestExpense	15941000	USD
	us-gaap	Interest Expense InterestExpense	16340000	USD
CY2019Q2	us-gaap	Interest Income Other InterestIncomeOther	675000	USD
CY2018Q2	us-gaap	Interest Income Other InterestIncomeOther	679000	USD
	us-gaap	Interest Income Other InterestIncomeOther	1433000	USD
	us-gaap	Interest Income Other InterestIncomeOther	1269000	USD
CY2019Q2	us-gaap	Interest Costs Capitalized Adjustment InterestCostsCapitalizedAdjustment	5165000	USD
CY2018Q2	us-gaap	Interest Costs Capitalized Adjustment InterestCostsCapitalizedAdjustment	3763000	USD
	us-gaap	Interest Costs Capitalized Adjustment InterestCostsCapitalizedAdjustment	10205000	USD
	us-gaap	Interest Costs Capitalized Adjustment InterestCostsCapitalizedAdjustment	7576000	USD
CY2019Q2	us-gaap	Interest Income Expense Nonoperating Net InterestIncomeExpenseNonoperatingNet	-2205000	USD
CY2018Q2	us-gaap	Interest Income Expense Nonoperating Net InterestIncomeExpenseNonoperatingNet	-3599000	USD
	us-gaap	Interest Income Expense Nonoperating Net InterestIncomeExpenseNonoperatingNet	-4303000	USD
	us-gaap	Interest Income Expense Nonoperating Net InterestIncomeExpenseNonoperatingNet	-7495000	USD
CY2019Q2	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.146
	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.150
CY2018Q2	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.016
	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.025
CY2019Q2	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2018Q2	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
CY2019Q2	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	-0.084
CY2018Q2	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	-0.196
	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	-0.090
	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	-0.202
CY2019Q2	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.020
CY2018Q2	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.002
	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.030
	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.017
CY2019Q2	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.146
CY2018Q2	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.016
	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.150
	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.025
CY2019Q2	us-gaap	Accumulated Other Comprehensive Income Loss Foreign Currency Translation Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax	-70118000	USD
CY2018Q4	us-gaap	Accumulated Other Comprehensive Income Loss Foreign Currency Translation Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax	-69855000	USD
CY2019Q2	us-gaap	Accumulated Other Comprehensive Income Loss Cumulative Changes In Net Gain Loss From Cash Flow Hedges Effect Net Of Tax AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax	-1397000	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
CY2019Q2	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-71515000	USD
CY2018Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-73964000	USD
CY2019Q2	us-gaap	Deferred Tax Assets Other Comprehensive Loss DeferredTaxAssetsOtherComprehensiveLoss	400000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Other Comprehensive Loss DeferredTaxAssetsOtherComprehensiveLoss	1000000.0	USD
CY2019Q2	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	201728000	USD
CY2018Q2	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	204625000	USD
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	368551000	USD
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	368887000	USD
CY2019Q2	us-gaap	Contract With Customer Asset Net ContractWithCustomerAssetNet	300000	USD
CY2018Q4	us-gaap	Contract With Customer Asset Net ContractWithCustomerAssetNet	5800000	USD
CY2019Q2	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	22600000	USD
CY2018Q4	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	25900000	USD
CY2019Q2	us-gaap	Contract With Customer Liability Revenue Recognized ContractWithCustomerLiabilityRevenueRecognized	2600000	USD
	us-gaap	Contract With Customer Liability Revenue Recognized ContractWithCustomerLiabilityRevenueRecognized	5200000	USD
CY2018Q2	us-gaap	Contract With Customer Liability Revenue Recognized ContractWithCustomerLiabilityRevenueRecognized	8700000	USD
	us-gaap	Contract With Customer Liability Revenue Recognized ContractWithCustomerLiabilityRevenueRecognized	10000000.0	USD
CY2019Q2	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	1000000000.0	USD
CY2019Q2	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	281300000	USD
CY2019Q2	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	401700000	USD
CY2019Q2	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	278600000	USD
CY2019Q2	us-gaap	Capitalized Contract Cost Net CapitalizedContractCostNet	53500000	USD
CY2018Q4	us-gaap	Capitalized Contract Cost Net CapitalizedContractCostNet	65900000	USD
CY2019Q2	us-gaap	Capitalized Contract Cost Amortization CapitalizedContractCostAmortization	8200000	USD
	us-gaap	Capitalized Contract Cost Amortization CapitalizedContractCostAmortization	15900000	USD
CY2018Q2	us-gaap	Capitalized Contract Cost Amortization CapitalizedContractCostAmortization	8200000	USD
	us-gaap	Capitalized Contract Cost Amortization CapitalizedContractCostAmortization	17100000	USD
CY2019Q2	us-gaap	Net Income Loss NetIncomeLoss	16854000	USD
CY2018Q2	us-gaap	Net Income Loss NetIncomeLoss	17784000	USD
CY2019Q2	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Basic UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	141000	USD
CY2018Q2	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Basic UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	171000	USD
CY2019Q2	hlx	Accretion Of Redeemable Noncontrolling Interests AccretionOfRedeemableNoncontrollingInterests	18000	USD
CY2018Q2	hlx	Accretion Of Redeemable Noncontrolling Interests AccretionOfRedeemableNoncontrollingInterests	0	USD
CY2019Q2	us-gaap	Undistributed Earnings UndistributedEarnings	16695000	USD
CY2019Q2	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	147521000	shares
CY2018Q2	us-gaap	Undistributed Earnings UndistributedEarnings	17613000	USD
CY2018Q2	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	146683000	shares
CY2019Q2	us-gaap	Undistributed Earnings UndistributedEarnings	16695000	USD
CY2019Q2	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	147521000	shares
CY2018Q2	us-gaap	Undistributed Earnings UndistributedEarnings	17613000	USD
CY2018Q2	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	146683000	shares
CY2019Q2	us-gaap	Amount Of Dilutive Securities Stock Options And Restrictive Stock Units AmountOfDilutiveSecuritiesStockOptionsAndRestrictiveStockUnits	0	USD
CY2019Q2	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	580000	shares
CY2018Q2	us-gaap	Amount Of Dilutive Securities Stock Options And Restrictive Stock Units AmountOfDilutiveSecuritiesStockOptionsAndRestrictiveStockUnits	0	USD
CY2018Q2	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	41000	shares
CY2019Q2	us-gaap	Net Income Loss Attributable To Parent Diluted NetIncomeLossAttributableToParentDiluted	16695000	USD
CY2019Q2	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	148101000	shares
CY2018Q2	us-gaap	Net Income Loss Attributable To Parent Diluted NetIncomeLossAttributableToParentDiluted	17613000	USD
CY2018Q2	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	146724000	shares
	us-gaap	Net Income Loss NetIncomeLoss	18172000	USD
	us-gaap	Net Income Loss NetIncomeLoss	15224000	USD
	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Basic UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	159000	USD
	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Basic UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	147000	USD
	hlx	Accretion Of Redeemable Noncontrolling Interests AccretionOfRedeemableNoncontrollingInterests	18000	USD
	hlx	Accretion Of Redeemable Noncontrolling Interests AccretionOfRedeemableNoncontrollingInterests	0	USD
	us-gaap	Undistributed Earnings UndistributedEarnings	17995000	USD
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	147471000	shares
	us-gaap	Undistributed Earnings UndistributedEarnings	15077000	USD
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	146668000	shares
	us-gaap	Undistributed Earnings UndistributedEarnings	17995000	USD
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	147471000	shares
	us-gaap	Undistributed Earnings UndistributedEarnings	15077000	USD
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	146668000	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	460000	shares
	us-gaap	Net Income Loss Attributable To Parent Diluted NetIncomeLossAttributableToParentDiluted	15077000	USD
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	146668000	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	0	shares
	us-gaap	Net Income Loss Attributable To Parent Diluted NetIncomeLossAttributableToParentDiluted	17995000	USD
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	147931000	shares
	hlx	Number Of Active Incentive Plans NumberOfActiveIncentivePlans	1
	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	3	segment
CY2019Q2	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	201728000	USD
CY2018Q2	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	204625000	USD
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	368551000	USD
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	368887000	USD
CY2019Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	23072000	USD
CY2018Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	24772000	USD
	us-gaap	Operating Income Loss OperatingIncomeLoss	23341000	USD
	us-gaap	Operating Income Loss OperatingIncomeLoss	23656000	USD
CY2019Q2	us-gaap	Assets Assets	2620222000	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	5327000	USD
	us-gaap	Asset Retirement Obligation Accretion Expense AssetRetirementObligationAccretionExpense	1118000	USD
CY2019Q2	us-gaap	Asset Retirement Obligation AssetRetirementObligation	49085000	USD
	us-gaap	Income Taxes Paid IncomeTaxesPaid	5478000	USD
	us-gaap	Income Taxes Paid IncomeTaxesPaid	3651000	USD
	us-gaap	Interest Paid Net InterestPaidNet	1478000	USD
	us-gaap	Interest Paid Net InterestPaidNet	3783000	USD
	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
CY2019Q2	us-gaap	Derivative Instruments In Hedges Assets At Fair Value DerivativeInstrumentsInHedgesAssetsAtFairValue	253000	USD
CY2018Q4	us-gaap	Derivative Instruments In Hedges Assets At Fair Value DerivativeInstrumentsInHedgesAssetsAtFairValue	1064000	USD
CY2019Q2	us-gaap	Derivative Instruments In Hedges Liabilities At Fair Value DerivativeInstrumentsInHedgesLiabilitiesAtFairValue	2006000	USD
CY2018Q4	us-gaap	Derivative Instruments In Hedges Liabilities At Fair Value DerivativeInstrumentsInHedgesLiabilitiesAtFairValue	6211000	USD
CY2019Q2	us-gaap	Derivative Instruments Not Designated As Hedging Instruments Liability At Fair Value DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsLiabilityAtFairValue	2245000	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	-1400000	USD
CY2019Q2	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax	-278000	USD
CY2018Q2	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax	-1226000	USD
	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax	-427000	USD
	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax	927000	USD
CY2019Q2	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesBeforeTax	-1975000	USD
CY2018Q2	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesBeforeTax	-1807000	USD
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesBeforeTax	-3821000	USD
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesBeforeTax	-3434000	USD
CY2019Q2	us-gaap	Derivative Gain Loss On Derivative Net DerivativeGainLossOnDerivativeNet	-2000	USD
CY2018Q2	us-gaap	Derivative Gain Loss On Derivative Net DerivativeGainLossOnDerivativeNet	-787000	USD
	us-gaap	Derivative Gain Loss On Derivative Net DerivativeGainLossOnDerivativeNet	-42000	USD
	us-gaap	Derivative Gain Loss On Derivative Net DerivativeGainLossOnDerivativeNet	57000	USD

Files In Submission

Name	View Source	Status
0000866829-19-000026-index-headers.html	Edgar Link	pending
0000866829-19-000026-index.html	Edgar Link	pending
0000866829-19-000026.txt	Edgar Link	pending
0000866829-19-000026-xbrl.zip	Edgar Link	pending
FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xlsx	Edgar Link	pending
hlx-20190630.xsd	Edgar Link	pending
hlx-20190630_cal.xml	Edgar Link	unprocessable
hlx-20190630_def.xml	Edgar Link	unprocessable
hlx-20190630_lab.xml	Edgar Link	unprocessable
hlx-20190630_pre.xml	Edgar Link	unprocessable
hlx06302019-10q.htm	Edgar Link	pending
hlx06302019-10q_htm.xml	Edgar Link	completed
hlx06302019-ex101.htm	Edgar Link	pending
hlx06302019-ex102.htm	Edgar Link	pending
hlx06302019-ex311.htm	Edgar Link	pending
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$HLX
HELIX ENERGY SOLUTIONS GROUP INC Stock $hlx

2019 Q2 Form 10-Q Financial Statement

#000086682919000026 Filed on July 26, 2019

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$HLX HELIX ENERGY SOLUTIONS GROUP INC Stock $hlx

2019 Q2 Form 10-Q Financial Statement

#000086682919000026 Filed on July 26, 2019

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$HLX
HELIX ENERGY SOLUTIONS GROUP INC Stock $hlx