2.4.0.82101100 - Disclosure - Overviewtruefalsefalse1falsefalsefalseD2013Q2YTDhttp://www.sec.gov/CIK0001489136duration2013-01-01T00:00:002013-06-30T00:00:001true1semg_OverviewAbstractsemg_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse02false2us-gaap_NatureOfOperationsus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1falsefalsefalse00<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">OVERVIEW</font></div><div style="line-height:120%;padding-top:6px;padding-left:36px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">SemGroup Corporation is a Delaware corporation headquartered in Tulsa, Oklahoma. SemGroup Corporation is the successor entity of SemGroup, L.P., which was an Oklahoma limited partnership. The terms “we,” “our,” “us,” “SemGroup,” “the Company” and similar language used in these notes to the unaudited condensed consolidated financial statements refer to SemGroup Corporation, SemGroup, L.P., and their subsidiaries.</font></div><div style="line-height:120%;padding-top:18px;padding-left:36px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-style:italic;font-weight:bold;">Basis of presentation</font></div><div style="line-height:120%;padding-top:6px;padding-left:36px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">The accompanying condensed consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States and the rules and regulations of the Securities and Exchange Commission. These financial statements include all normal and recurring adjustments that, in the opinion of management, are necessary to present fairly the financial position of the Company and the results of its operations and its cash flows. </font></div><div style="line-height:120%;padding-top:12px;padding-left:36px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">The accompanying condensed consolidated financial statements are unaudited. The condensed consolidated balance sheet at </font><font style="font-family:inherit;font-size:10pt;color:#000000;text-decoration:none;">December 31, 2012</font><font style="font-family:inherit;font-size:10pt;"> is derived from audited financial statements.</font></div><div style="line-height:120%;padding-top:12px;padding-left:36px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Our condensed consolidated financial statements include the accounts of our controlled subsidiaries. All significant transactions between our consolidated subsidiaries have been eliminated.</font></div><div style="line-height:120%;padding-top:12px;padding-left:36px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">The preparation of financial statements in conformity with accounting principles generally accepted in the United States requires management to make estimates and assumptions that affect the amounts and disclosures in the financial statements. Although management believes these estimates are reasonable, actual results could differ materially from these estimates. The results of operations for the </font><font style="font-family:inherit;font-size:10pt;color:#000000;text-decoration:none;">three months and six months</font><font style="font-family:inherit;font-size:10pt;"> ended </font><font style="font-family:inherit;font-size:10pt;color:#000000;text-decoration:none;">June 30, 2013</font><font style="font-family:inherit;font-size:10pt;">, are not necessarily indicative of the results to be expected for the full year ending </font><font style="font-family:inherit;font-size:10pt;color:#000000;text-decoration:none;">December 31, 2013</font><font style="font-family:inherit;font-size:10pt;">.</font></div><div style="line-height:120%;padding-top:12px;padding-left:36px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Pursuant to the rules and regulations of the Securities and Exchange Commission, the accompanying condensed consolidated financial statements do not include all of the information and notes normally included with financial statements prepared in accordance with accounting principles generally accepted in the United States. These condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements and notes thereto for the year ended </font><font style="font-family:inherit;font-size:10pt;color:#000000;text-decoration:none;">December 31, 2012</font><font style="font-family:inherit;font-size:10pt;">, which are included in our Annual Report on Form 10-K for the year ended </font><font style="font-family:inherit;font-size:10pt;color:#000000;text-decoration:none;">December 31, 2012</font><font style="font-family:inherit;font-size:10pt;">, filed with the Securities and Exchange Commission.</font></div><div style="line-height:120%;padding-top:6px;padding-left:36px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Certain reclassifications have been made to conform previously reported balances to the current presentation, including the reclassification of prior periods to reflect the SemStream segment's Arizona operations as discontinued operations. </font></div><div style="line-height:120%;padding-top:12px;padding-left:36px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Our significant accounting policies are consistent with those described in our Annual Report on Form 10-K for the year ended </font><font style="font-family:inherit;font-size:10pt;color:#000000;text-decoration:none;">December 31, 2012</font><font style="font-family:inherit;font-size:10pt;">.</font></div><div style="line-height:120%;padding-top:18px;padding-left:36px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-style:italic;font-weight:bold;">Recent accounting pronouncements</font></div><div style="line-height:120%;padding-top:6px;padding-left:36px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">On January 31, 2013, the Financial Accounting Standards Board ("FASB") issued Accounting Standard Update ("ASU") 2013-01, "Clarifying the Scope of Disclosures about Offsetting Assets and Liabilities," which clarifies the scope of the offsetting disclosure requirements in ASU 2011-11, "Disclosures About Offsetting Assets and Liabilities." Under ASU 2013-01, the disclosure requirements apply to derivative instruments accounted for in accordance with Accounting Standards Codification ("ASC") 815, "Derivatives and Hedging," including bifurcated embedded derivatives, repurchase agreements and reverse repurchase agreements, and securities borrowing and securities lending arrangements that are either offset on the balance sheet or subject to an enforceable master netting arrangement or similar agreement. ASU 2013-01 is effective for fiscal years beginning on or after January 1, 2013, and interim periods within those years. Retrospective application is required for all comparative periods presented. We adopted this guidance in the first quarter of 2013. The impact of adoption was not material. </font></div><div style="line-height:120%;padding-top:6px;padding-left:36px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">On February 5, 2013, the FASB issued ASU 2013-02, "Reporting of Amounts Reclassified Out of Accumulated Other Comprehensive Income." This ASU adds new disclosure requirements for items reclassified out of accumulated other comprehensive income ("AOCI"). The ASU is intended to help entities improve the transparency of changes in other comprehensive income ("OCI") and items reclassified out of AOCI in their financial statements. It does not amend any existing requirements for reporting net income or OCI in the financial statements. We adopted this guidance in the first quarter of 2013. The impact of adoption was not material. </font></div><div style="line-height:120%;padding-bottom:4px;padding-top:6px;padding-left:36px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">On February 28, 2013, the FASB issued ASU 2013-04, "Obligations Resulting from Joint and Several Liability Arrangements for Which the Total Amount of the Obligation Is Fixed at the Reporting Date (a consensus of the FASB Emerging Issues Task Force)." The ASU requires entities to “measure obligations resulting from joint and several liability arrangements for which the total amount of the obligation within the scope of this guidance is fixed at the reporting date, as the sum of the following:</font></div><div style="line-height:120%;padding-left:66px;"><font style="font-family:inherit;font-size:10pt;padding-right:30px;">•</font><font style="font-family:inherit;font-size:10pt;">the amount the reporting entity agreed to pay on the basis of its arrangement among its co-obligors; and</font></div><div style="line-height:120%;padding-left:66px;"><font style="font-family:inherit;font-size:10pt;padding-right:30px;">•</font><font style="font-family:inherit;font-size:10pt;">any additional amount the reporting entity expects to pay on behalf of its co-obligors.”</font></div><div style="line-height:120%;padding-bottom:4px;padding-top:6px;padding-left:36px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Required disclosures include a description of the joint and several arrangement and the total outstanding amount of the obligation for all joint parties. The ASU permits entities to aggregate disclosures (as opposed to providing separate disclosures for each joint and several obligation). These disclosure requirements are incremental to the existing related-party disclosure requirements in ASC 850, "Related Party Disclosures." The ASU is effective for public entities for all prior periods in fiscal years beginning on or after December 15, 2013, and interim reporting periods within those years. The Company will adopt this guidance in the first quarter of 2014. The impact is not expected to be material.</font></div><div style="line-height:120%;padding-bottom:4px;padding-top:6px;padding-left:36px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">On March 4, 2013, the FASB issued ASU 2013-05, "Parent's Accounting for the Cumulative Translation Adjustment Upon Derecognition of Certain Subsidiaries or Groups of Assets Within a Foreign Entity or of an Investment in a Foreign Entity - a consensus of the FASB Emerging Issues Task Force”, which indicates that the entire amount of a cumulative translation adjustment ("CTA") related to an entity's investment in a foreign entity should be released when there has been a:</font></div><table cellpadding="0" cellspacing="0" style="font-family:Times New Roman; font-size:10pt;"><tr><td style="width:96px;" rowspan="1" colspan="1"></td><td rowspan="1" colspan="1"></td></tr><tr><td style="vertical-align:top" rowspan="1" colspan="1"><div style="line-height:120%;font-size:10pt;padding-left:66px;"><font style="font-family:inherit;font-size:10pt;">•</font></div></td><td style="vertical-align:top;padding-left:30px;" rowspan="1" colspan="1"><div style="line-height:120%;font-size:10pt;text-indent:-30px;"><font style="font-family:inherit;font-size:10pt;">sale of a subsidiary or group of net assets within a foreign entity and the sale represents the substantially complete liquidation of the investment in the foreign entity;</font></div></td></tr></table><table cellpadding="0" cellspacing="0" style="font-family:Times New Roman; font-size:10pt;"><tr><td style="width:96px;" rowspan="1" colspan="1"></td><td rowspan="1" colspan="1"></td></tr><tr><td style="vertical-align:top" rowspan="1" colspan="1"><div style="line-height:120%;font-size:10pt;padding-left:66px;"><font style="font-family:inherit;font-size:10pt;">•</font></div></td><td style="vertical-align:top;padding-left:30px;" rowspan="1" colspan="1"><div style="line-height:120%;font-size:10pt;text-indent:-30px;"><font style="font-family:inherit;font-size:10pt;">loss of a controlling financial interest in an investment in a foreign entity (i.e., the foreign entity is deconsolidated); or</font></div></td></tr></table><table cellpadding="0" cellspacing="0" style="font-family:Times New Roman; font-size:10pt;"><tr><td style="width:96px;" rowspan="1" colspan="1"></td><td rowspan="1" colspan="1"></td></tr><tr><td style="vertical-align:top" rowspan="1" colspan="1"><div style="line-height:120%;font-size:10pt;padding-left:66px;"><font style="font-family:inherit;font-size:10pt;">•</font></div></td><td style="vertical-align:top;padding-left:30px;" rowspan="1" colspan="1"><div style="line-height:120%;font-size:10pt;text-indent:-30px;"><font style="font-family:inherit;font-size:10pt;">step acquisition for a foreign entity (i.e., when an entity has changed from applying the equity method for an investment in a foreign entity to consolidating the foreign entity).</font></div></td></tr></table><div style="line-height:120%;padding-top:6px;padding-left:36px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">The ASU does not change the requirement to release a pro rata portion of the CTA of the foreign entity into earnings for a partial sale of an equity method investment in a foreign entity. For public entities, this ASU is effective for fiscal years beginning on or after December 15, 2013, and interim periods within those years. The Company will adopt this guidance in the first quarter of 2014. The impact is not expected to be material.</font></div></div>falsefalsefalsenonnum:textBlockItemTypenaThe entire disclosure for the nature of an entity's business, the major products or services it sells or provides and its principal markets, including the locations of those markets. If the entity operates in more than one business, the disclosure also indicates the relative importance of its operations in each business and the basis for the determination (for example, assets, revenues, or earnings).Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 2
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-Paragraph 10
-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.
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