2.4.0.82410404 - Disclosure - Equity (Details 2)truefalseIn Thousands, except Share data, unless otherwise specifiedfalse1false USDfalsefalse$I2013Q2http://www.sec.gov/CIK0001489136instant2013-06-30T00:00:000001-01-01T00:00:00sharesStandardhttp://www.xbrl.org/2003/instancesharesxbrli0usdPerShareDividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0usdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$2false USDfalsefalse$I2012Q4http://www.sec.gov/CIK0001489136instant2012-12-31T00:00:000001-01-01T00:00:00usdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$1true 4us-gaap_IncreaseDecreaseInStockholdersEquityRollForwardus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Schedule of Common Stock Reflected On The Condensed Consolidated Balance Sheet2false 5us-gaap_CommonStockSharesIssuedus-gaap_truenainstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse4252509042525090falsefalsefalse2falsefalsefalse00falsefalsefalsexbrli:sharesItemTypesharesTotal number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.29) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 30 -Article 5 false1Total shares3false 5us-gaap_CommonStockParOrStatedValuePerShareus-gaap_truenainstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse0.010.01USD$falsetruefalse2falsefalsefalse00falsefalsefalsenum:perShareItemTypedecimalFace amount or stated value of common stock per share; generally not indicative of the fair market value per share.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 129 -Paragraph 4 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: 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) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 30 -Article 5 false3Par value per share4false 5us-gaap_CommonStockValueus-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse425000425USD$falsetruefalse2truefalsefalse420000420USD$falsetruefalsexbrli:monetaryItemTypemonetaryAggregate par or stated value of issued nonredeemable common stock (or common stock redeemable solely at the option of the issuer). This item includes treasury stock repurchased by the entity. Note: elements for number of nonredeemable common shares, par value and other disclosure concepts are in another section within stockholders' equity.Reference 1: 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) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 30 -Article 5 false2Common stock5false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3false truefalseI2013Q2_us-gaap_StatementEquityComponentsAxis_semg_SharesIssuedOnEmergenceDateMemberhttp://www.sec.gov/CIK0001489136instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseShares Issued On Emergence Date [Member]us-gaap_StatementEquityComponentsAxisxbrldihttp://xbrl.org/2006/xbrldisemg_SharesIssuedOnEmergenceDateMemberus-gaap_StatementEquityComponentsAxisexplicitMembersharesStandardhttp://www.xbrl.org/2003/instancesharesxbrli0nanafalse0Shares Issued On Emergence Date [Member]6true 4us-gaap_IncreaseDecreaseInStockholdersEquityRollForwardus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Schedule of Common Stock Reflected On The Condensed Consolidated Balance Sheet7false 5us-gaap_CommonStockSharesIssuedus-gaap_truenainstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse4088249640882496falsefalsefalse2falsefalsefalse00falsefalsefalsexbrli:sharesItemTypesharesTotal number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury.Reference 1: 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) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 30 -Article 5 false1Total shares8false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse4false truefalseI2013Q2_us-gaap_StatementEquityComponentsAxis_semg_SharesSubsequentlyIssuedInSettlementOfPrePetitionClaimsMemberhttp://www.sec.gov/CIK0001489136instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseShares Subsequently Issued In Settlement Of Pre-Petition Claims [Member]us-gaap_StatementEquityComponentsAxisxbrldihttp://xbrl.org/2006/xbrldisemg_SharesSubsequentlyIssuedInSettlementOfPrePetitionClaimsMemberus-gaap_StatementEquityComponentsAxisexplicitMembersharesStandardhttp://www.xbrl.org/2003/instancesharesxbrli0nanafalse0Shares Subsequently Issued In Settlement Of Pre-Petition Claims [Member]9true 4us-gaap_IncreaseDecreaseInStockholdersEquityRollForwardus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Schedule of Common Stock Reflected On The Condensed Consolidated Balance Sheet10false 5us-gaap_CommonStockSharesIssuedus-gaap_truenainstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse226016226016falsefalsefalse2falsefalsefalse00falsefalsefalsexbrli:sharesItemTypesharesTotal number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury.Reference 1: 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) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 30 -Article 5 false1Total shares11false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse5false truefalseI2013Q2_us-gaap_StatementEquityComponentsAxis_semg_RemainingSharesRequiredToBeIssuedInSettlementOfPrePetitionClaimsMemberhttp://www.sec.gov/CIK0001489136instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseRemaining Shares Required To Be Issued In Settlement Of Pre-Petition Claims [Member]us-gaap_StatementEquityComponentsAxisxbrldihttp://xbrl.org/2006/xbrldisemg_RemainingSharesRequiredToBeIssuedInSettlementOfPrePetitionClaimsMemberus-gaap_StatementEquityComponentsAxisexplicitMembersharesStandardhttp://www.xbrl.org/2003/instancesharesxbrli0nanafalse0Remaining Shares Required To Be Issued In Settlement Of Pre-Petition Claims [Member]12true 4us-gaap_IncreaseDecreaseInStockholdersEquityRollForwardus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Schedule of Common Stock Reflected On The Condensed Consolidated Balance Sheet13false 5us-gaap_CommonStockSharesIssuedus-gaap_truenainstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse291484291484falsefalsefalse2falsefalsefalse00falsefalsefalsexbrli:sharesItemTypesharesTotal number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury.Reference 1: 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) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 30 -Article 5 false1Total shares14false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse6false truefalseI2013Q2_us-gaap_StatementEquityComponentsAxis_semg_IssuanceOfSharesUnderEmployeeAndDirectorCompensationProgramsMemberhttp://www.sec.gov/CIK0001489136instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseIssuance Of Shares Under Employee And Director Compensation Programs [Member]us-gaap_StatementEquityComponentsAxisxbrldihttp://xbrl.org/2006/xbrldisemg_IssuanceOfSharesUnderEmployeeAndDirectorCompensationProgramsMemberus-gaap_StatementEquityComponentsAxisexplicitMembersharesStandardhttp://www.xbrl.org/2003/instancesharesxbrli0nanafalse0Issuance Of Shares Under Employee And Director Compensation Programs [Member]15true 4us-gaap_IncreaseDecreaseInStockholdersEquityRollForwardus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Schedule of Common Stock Reflected On The Condensed Consolidated Balance Sheet16false 5us-gaap_CommonStockSharesIssuedus-gaap_truenainstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse689320689320[1]falsefalsefalse2falsefalsefalse00falsefalsefalsexbrli:sharesItemTypesharesTotal number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury.Reference 1: 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) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 30 -Article 5 false1Total shares17false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse7false truefalseI2013Q2_us-gaap_StatementEquityComponentsAxis_semg_SharesIssuedUponExerciseOfWarrantsMemberhttp://www.sec.gov/CIK0001489136instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseShares Issued Upon Exercise Of Warrants [Member]us-gaap_StatementEquityComponentsAxisxbrldihttp://xbrl.org/2006/xbrldisemg_SharesIssuedUponExerciseOfWarrantsMemberus-gaap_StatementEquityComponentsAxisexplicitMembersharesStandardhttp://www.xbrl.org/2003/instancesharesxbrli0nanafalse0Shares Issued Upon Exercise Of Warrants [Member]18true 4us-gaap_IncreaseDecreaseInStockholdersEquityRollForwardus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Schedule of Common Stock Reflected On The Condensed Consolidated Balance Sheet19false 5us-gaap_CommonStockSharesIssuedus-gaap_truenainstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse435774435774falsefalsefalse2falsefalsefalse00falsefalsefalsexbrli:sharesItemTypesharesTotal number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury.Reference 1: 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) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 30 -Article 5 false1Total shares1(*) These shares include 105,738 shares which vested during the six months ended June 30, 2013. Of these vested shares, recipients sold back to the Company 8,591 shares to satisfy tax withholding obligations which are being recognized at cost as treasury stock on the condensed consolidated balance sheet.falseEquity (Details 2) (USD $)ThousandsNoRoundingNoRoundingUnKnowntruefalsefalseSheethttp://www.semgroupcorp.com/role/EquityDetails2219