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Derivative Instruments And Hedging Activities (Narrative) (Details) (USD $) In Millions, unless otherwise specified | 1 Months Ended
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Feb. 20, 2013
Oil And Natural Gas Commodity Contracts [Member] |
Derivative Cash Settlement | $ 22.5
Interest Rate Swaps [Member] |
Derivative Cash Settlement | $ 0.6

X
- Definition The amount of cash paid on settlement of derivative. + References No definition available. + Details
Name: | hlx_DerivativeCashSettlement
Namespace Prefix: | hlx_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration