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Summary Of Significant Accounting Policies (Convertible Preferred Stock - Narrative) (Details) (USD $) In Millions, except Share data, unless otherwise specified | 1 Months Ended
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Dec. 31, 2012
Summary Of Significant Accounting Policies [Abstract] |
Value of convertible preferred stock | $ 1 hlx_ValueOfConversionSecuritiesDuringPeriod
Stock issued during period, shares, conversion of convertible securities | 361,402 us-gaap_StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities

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- Definition The gross value of Convertible Preferred stock converted during the period. + References No definition available. + Details
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- Details
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- Definition Number of shares issued during the period as a result of the conversion of convertible securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21475-112644 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 29, 30 -Article 5 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.29-30) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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Data Type: | xbrli:sharesItemType
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Period Type: | duration