XML 26 R79.htm IDEA: XBRL DOCUMENT v2.4.1.9
Employee Benefit Plans (Narrative) (Details) (USD $)
 12 Months Ended 120 Months Ended 1 Months Ended 12 Months Ended 36 Months Ended 1 Months Ended
Dec. 31, 2014
ShareBasedCompensationPlan
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2014
Jan. 31, 2014
Dec. 31, 2011
Dec. 31, 2014
Jan. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Number of stock plans 1hlx_NumberOfStockPlans              
Additional shares authorized 4,300,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfAdditionalSharesAuthorized              
Shares available for grant 6,200,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant     6,200,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant     6,200,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant  
Share-based payment award other than options, grants in period 139,455us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod 168,468us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod 349,430us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod          
Forfeiture on restricted stock percentage 8.00%hlx_ForfeituresOnRestrictedStockPercentage              
Forfeiture on restricted stock period   5 years            
Compensation cost related to restricted stock, PSUs and RSUs $ 10,400,000us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardCompensationCost1 $ 8,800,000us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardCompensationCost1 $ 7,700,000us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardCompensationCost1          
Performance share units granted 73,609hlx_PerformanceShareUnitsGranted 89,329hlx_PerformanceShareUnitsGranted 132,910hlx_PerformanceShareUnitsGranted          
Performance share unit market value $ 26.79hlx_PerformanceShareUnitMarketValue $ 27.50hlx_PerformanceShareUnitMarketValue $ 23.68hlx_PerformanceShareUnitMarketValue $ 26.79hlx_PerformanceShareUnitMarketValue     26.79hlx_PerformanceShareUnitMarketValue  
Stock option grants 0us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross     0us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross        
Options, outstanding, number   0us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber       192,800us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber    
Options, outstanding, weighted average exercise price           10.52us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice    
Options, exercises in period   52,800us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised 140,000us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised          
Options, exercisable, weighted average exercise price   $ 13.91us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice $ 9.24us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice          
Options, exercises in period, total intrinsic value   500,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue 1,300,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue          
Options, exercisable, intrinsic value     400,000us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1          
Deferred compensation arrangement, cash awards granted, amount 8,900,000us-gaap_DeferredCompensationArrangementWithIndividualCashAwardGrantedAmount 8,400,000us-gaap_DeferredCompensationArrangementWithIndividualCashAwardGrantedAmount 4,200,000us-gaap_DeferredCompensationArrangementWithIndividualCashAwardGrantedAmount 8,900,000us-gaap_DeferredCompensationArrangementWithIndividualCashAwardGrantedAmount     8,900,000us-gaap_DeferredCompensationArrangementWithIndividualCashAwardGrantedAmount  
Deferred compensation arrangement, compensation expense 7,200,000us-gaap_DeferredCompensationArrangementWithIndividualCompensationExpense 9,100,000us-gaap_DeferredCompensationArrangementWithIndividualCompensationExpense 8,700,000us-gaap_DeferredCompensationArrangementWithIndividualCompensationExpense          
Deferred compensation cash-based arrangement, liability 12,800,000us-gaap_DeferredCompensationCashbasedArrangementsLiabilityCurrentAndNoncurrent 14,800,000us-gaap_DeferredCompensationCashbasedArrangementsLiabilityCurrentAndNoncurrent   12,800,000us-gaap_DeferredCompensationCashbasedArrangementsLiabilityCurrentAndNoncurrent     12,800,000us-gaap_DeferredCompensationCashbasedArrangementsLiabilityCurrentAndNoncurrent  
Deferred compensation arrangement with individual, distributions paid 9,200,000us-gaap_DeferredCompensationArrangementWithIndividualDistributionsPaid 7,100,000us-gaap_DeferredCompensationArrangementWithIndividualDistributionsPaid 5,500,000us-gaap_DeferredCompensationArrangementWithIndividualDistributionsPaid 9,200,000us-gaap_DeferredCompensationArrangementWithIndividualDistributionsPaid     9,200,000us-gaap_DeferredCompensationArrangementWithIndividualDistributionsPaid  
Subsequent Event [Member]                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Deferred compensation arrangement, cash awards granted, amount               0us-gaap_DeferredCompensationArrangementWithIndividualCashAwardGrantedAmount
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
Deferred compensation arrangement with individual, distributions paid               8,900,000us-gaap_DeferredCompensationArrangementWithIndividualDistributionsPaid
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
401K Plan [Member]                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Maximum employer subscription rate 75.00%hlx_ShareBasedCompensationArrangementByShareBasedPaymentAwardMaximumEmployerSubscriptionRate
/ us-gaap_AwardTypeAxis
= us-gaap_UnitedStatesPostretirementBenefitPlansOfUSEntityDefinedBenefitMember		 50.00%hlx_ShareBasedCompensationArrangementByShareBasedPaymentAwardMaximumEmployerSubscriptionRate
/ us-gaap_AwardTypeAxis
= us-gaap_UnitedStatesPostretirementBenefitPlansOfUSEntityDefinedBenefitMember		            
Maximum employee subscription rate 5.00%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardMaximumEmployeeSubscriptionRate
/ us-gaap_AwardTypeAxis
= us-gaap_UnitedStatesPostretirementBenefitPlansOfUSEntityDefinedBenefitMember		     5.00%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardMaximumEmployeeSubscriptionRate
/ us-gaap_AwardTypeAxis
= us-gaap_UnitedStatesPostretirementBenefitPlansOfUSEntityDefinedBenefitMember		     5.00%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardMaximumEmployeeSubscriptionRate
/ us-gaap_AwardTypeAxis
= us-gaap_UnitedStatesPostretirementBenefitPlansOfUSEntityDefinedBenefitMember		  
401k plan cost 2,200,000us-gaap_DefinedContributionPlanCostRecognized
/ us-gaap_AwardTypeAxis
= us-gaap_UnitedStatesPostretirementBenefitPlansOfUSEntityDefinedBenefitMember		 1,700,000us-gaap_DefinedContributionPlanCostRecognized
/ us-gaap_AwardTypeAxis
= us-gaap_UnitedStatesPostretirementBenefitPlansOfUSEntityDefinedBenefitMember		 1,600,000us-gaap_DefinedContributionPlanCostRecognized
/ us-gaap_AwardTypeAxis
= us-gaap_UnitedStatesPostretirementBenefitPlansOfUSEntityDefinedBenefitMember		          
E S P P [Member]                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Stock authorized shares employee stock purchase plan 1,500,000hlx_StockAuthorizedSharesEmployeeStockPurchasePlans
/ us-gaap_AwardTypeAxis
= hlx_ESPPMember		              
Available shares employee stock purchase plan 1,200,000hlx_AvailableSharesEmployeeStockPurchasePlan
/ us-gaap_AwardTypeAxis
= hlx_ESPPMember		              
Percentage of share of non vested stock considered as call option 85.00%hlx_PercentageOfShareOfNonVestedStockConsideredAsCallOption
/ us-gaap_AwardTypeAxis
= hlx_ESPPMember		     85.00%hlx_PercentageOfShareOfNonVestedStockConsideredAsCallOption
/ us-gaap_AwardTypeAxis
= hlx_ESPPMember		     85.00%hlx_PercentageOfShareOfNonVestedStockConsideredAsCallOption
/ us-gaap_AwardTypeAxis
= hlx_ESPPMember		  
Percentage of share of non-vested stock considered as put-option 15.00%hlx_PercentageOfShareOfNonVestedStockConsideredAsPutOption
/ us-gaap_AwardTypeAxis
= hlx_ESPPMember		              
Allocated share-based compensation expense 1,000,000us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_AwardTypeAxis
= hlx_ESPPMember		 800,000us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_AwardTypeAxis
= hlx_ESPPMember		            
2005 Incentive Plan [Member]                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Share-based payment award, vesting percentage           20.00%hlx_ShareBasedCompensationArrangementByShareBasedPaymentAwardVestingPercentage
/ us-gaap_AwardTypeAxis
= hlx_IncentivePlan2005Member		 33.00%hlx_ShareBasedCompensationArrangementByShareBasedPaymentAwardVestingPercentage
/ us-gaap_AwardTypeAxis
= hlx_IncentivePlan2005Member		  
Share-based payment award, vesting period, in years 3 years 3 years 3 years   3 years 5 years    
2005 Incentive Plan [Member] | Subsequent Event [Member]                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Share-based payment award, vesting percentage               33.00%hlx_ShareBasedCompensationArrangementByShareBasedPaymentAwardVestingPercentage
/ us-gaap_AwardTypeAxis
= hlx_IncentivePlan2005Member
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
Share-based payment award other than options, grants in period               293,029us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
/ us-gaap_AwardTypeAxis
= hlx_IncentivePlan2005Member
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
Share-based payment award, market value per share               $ 21.67us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardPerShareWeightedAveragePriceOfSharesPurchased
/ us-gaap_AwardTypeAxis
= hlx_IncentivePlan2005Member
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
Share-based compensation, nonvested awards, total compensation cost not yet recognized               6,300,000us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized
/ us-gaap_AwardTypeAxis
= hlx_IncentivePlan2005Member
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
Performance share units granted               293,029hlx_PerformanceShareUnitsGranted
/ us-gaap_AwardTypeAxis
= hlx_IncentivePlan2005Member
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
Share-based payment award, vesting period, in years               3 years
Restricted Stock Units RSU And Restricted Stock Shares [Member]                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Share-based compensation, nonvested awards, total compensation cost not yet recognized 5,700,000us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized
/ us-gaap_AwardTypeAxis
= hlx_RestrictedStockUnitsRsuAndRestrictedStockSharesMember		 7,500,000us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized
/ us-gaap_AwardTypeAxis
= hlx_RestrictedStockUnitsRsuAndRestrictedStockSharesMember		 11,200,000us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized
/ us-gaap_AwardTypeAxis
= hlx_RestrictedStockUnitsRsuAndRestrictedStockSharesMember		 5,700,000us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized
/ us-gaap_AwardTypeAxis
= hlx_RestrictedStockUnitsRsuAndRestrictedStockSharesMember		     5,700,000us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized
/ us-gaap_AwardTypeAxis
= hlx_RestrictedStockUnitsRsuAndRestrictedStockSharesMember		  
Share-based payment award, outstanding, weighted average remaining contractual terms 1 year 2 months 12 days              
Performance Shares [Member]                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Share-based payment award, vesting percentage 100.00%hlx_ShareBasedCompensationArrangementByShareBasedPaymentAwardVestingPercentage
/ us-gaap_AwardTypeAxis
= us-gaap_PerformanceSharesMember		              
Deferred compensation liability 7,900,000us-gaap_DeferredCompensationLiabilityCurrentAndNoncurrent
/ us-gaap_AwardTypeAxis
= us-gaap_PerformanceSharesMember		     7,900,000us-gaap_DeferredCompensationLiabilityCurrentAndNoncurrent
/ us-gaap_AwardTypeAxis
= us-gaap_PerformanceSharesMember		     7,900,000us-gaap_DeferredCompensationLiabilityCurrentAndNoncurrent
/ us-gaap_AwardTypeAxis
= us-gaap_PerformanceSharesMember		  
Share-based payment award, plan modification, incremental compensation cost 3,300,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardPlanModificationIncrementalCompensationCost
/ us-gaap_AwardTypeAxis
= us-gaap_PerformanceSharesMember		              
Share-based payment award, vesting period, in years 3 years              
Performance Shares [Member] | Subsequent Event [Member]                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Deferred compensation arrangement with individual, distributions paid               4,500,000us-gaap_DeferredCompensationArrangementWithIndividualDistributionsPaid
/ us-gaap_AwardTypeAxis
= us-gaap_PerformanceSharesMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
Long-Term Incentive Cash Plan 2009 Grants [Member]                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Minimum percentage of average price during measurement period   75.00%hlx_MinimumPercentageOfAveragePriceDuringMeasurementPeriod
/ us-gaap_AwardTypeAxis
= hlx_LongTermIncentiveCashPlan2009GrantsMember		            
Executive Officer [Member]                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Deferred compensation arrangement, compensation expense 3,600,000us-gaap_DeferredCompensationArrangementWithIndividualCompensationExpense
/ us-gaap_TitleOfIndividualAxis
= us-gaap_ExecutiveOfficerMember		 5,300,000us-gaap_DeferredCompensationArrangementWithIndividualCompensationExpense
/ us-gaap_TitleOfIndividualAxis
= us-gaap_ExecutiveOfficerMember		 7,300,000us-gaap_DeferredCompensationArrangementWithIndividualCompensationExpense
/ us-gaap_TitleOfIndividualAxis
= us-gaap_ExecutiveOfficerMember		          
Deferred compensation cash-based arrangement, liability $ 7,900,000us-gaap_DeferredCompensationCashbasedArrangementsLiabilityCurrentAndNoncurrent
/ us-gaap_TitleOfIndividualAxis
= us-gaap_ExecutiveOfficerMember		 $ 11,100,000us-gaap_DeferredCompensationCashbasedArrangementsLiabilityCurrentAndNoncurrent
/ us-gaap_TitleOfIndividualAxis
= us-gaap_ExecutiveOfficerMember		   $ 7,900,000us-gaap_DeferredCompensationCashbasedArrangementsLiabilityCurrentAndNoncurrent
/ us-gaap_TitleOfIndividualAxis
= us-gaap_ExecutiveOfficerMember		     7,900,000us-gaap_DeferredCompensationCashbasedArrangementsLiabilityCurrentAndNoncurrent
/ us-gaap_TitleOfIndividualAxis
= us-gaap_ExecutiveOfficerMember		  
Maximum Shares As Incentive Options Member                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Shares available for grant 2,000,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant
/ us-gaap_DeferredCompensationArrangementWithIndividualShareBasedPaymentsByTypeOfDeferredCompensationAxis
= hlx_MaximumSharesAsIncentiveOptionsMember		     2,000,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant
/ us-gaap_DeferredCompensationArrangementWithIndividualShareBasedPaymentsByTypeOfDeferredCompensationAxis
= hlx_MaximumSharesAsIncentiveOptionsMember		     2,000,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant
/ us-gaap_DeferredCompensationArrangementWithIndividualShareBasedPaymentsByTypeOfDeferredCompensationAxis
= hlx_MaximumSharesAsIncentiveOptionsMember		  
Maximum [Member] | Performance Shares [Member]                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Award percentage 200.00%hlx_ShareBasedCompensationMaximumAwardPercentage
/ us-gaap_AwardTypeAxis
= us-gaap_PerformanceSharesMember
/ us-gaap_RangeAxis
= us-gaap_MaximumMember		              
Minimum [Member] | Performance Shares [Member]                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Award percentage 0.00%hlx_ShareBasedCompensationMaximumAwardPercentage
/ us-gaap_AwardTypeAxis
= us-gaap_PerformanceSharesMember
/ us-gaap_RangeAxis
= us-gaap_MinimumMember