Organization and Basis of Presentation | ORGANIZATION AND BASIS OF PRESENTATION ORGANIZATION Tesoro Logistics LP (“TLLP” or the “Partnership”) is a fee-based, growth-oriented Delaware limited partnership formed in December 2010 by Tesoro Corporation and its wholly-owned subsidiary, Tesoro Logistics GP, LLC (“TLGP”), our general partner, to own, operate, develop and acquire logistics assets. Unless the context otherwise requires, references in this report to “we,” “us,” “our,” or “ours” refer to Tesoro Logistics LP, one or more of its consolidated subsidiaries, or all of them taken as a whole. Unless the context otherwise requires, references in this report to “Tesoro” or our “Sponsor” refer collectively to Tesoro Corporation and any of its subsidiaries, other than TLLP, its subsidiaries and its general partner. PRINCIPLES OF CONSOLIDATION AND BASIS OF PRESENTATION Acquired assets from Tesoro, and the associated liabilities and results of operations, are collectively referred to as the “Predecessors.” See Note 1 of our Annual Report on Form 10-K for the year ended December 31, 2016 for additional information regarding the acquired assets from Tesoro. The accompanying condensed consolidated financial statements and related notes present the financial position, combined results of operations and combined cash flows of our Predecessors at historical cost. The financial statements of our Predecessors have been prepared from the separate records maintained by Tesoro and may not necessarily be indicative of the conditions that would have existed or the results of operations if our Predecessors had been operated as an unaffiliated entity. Our Predecessors did not record revenue for transactions with Tesoro and the expenses recognized were not material in the Terminalling and Transportation segment. The interim condensed consolidated financial statements and notes thereto have been prepared by management without audit according to the rules and regulations of the Securities and Exchange Commission (“SEC”) and reflect all adjustments that, in the opinion of management, are necessary for a fair presentation of results for the periods presented. Such adjustments are of a normal recurring nature, unless otherwise disclosed. We prepare our condensed consolidated financial statements in conformity with accounting principles generally accepted in the United States of America (“U.S. GAAP”). However, certain information and notes normally included in financial statements prepared under U.S. GAAP have been condensed or omitted pursuant to the SEC’s rules and regulations. Management believes that the disclosures presented herein are adequate to present the information fairly. The accompanying interim condensed consolidated financial statements and notes should be read in conjunction with our Annual Report on Form 10-K for the year ended December 31, 2016 . We are required under U.S. GAAP to make estimates and assumptions that affect the amounts of assets and liabilities and revenues and expenses reported as of and during the periods presented. We review our estimates on an ongoing basis using currently available information. Changes in facts and circumstances may result in revised estimates, and actual results could differ from those estimates. The results of operations of the Partnership, or our Predecessors, for any interim period are not necessarily indicative of results for the full year. Certain reclassifications have been made to prior period presentations to conform to the current year. See Note 8 for further discussion of reclassifications. FINANCIAL INSTRUMENTS Financial instruments including cash and cash equivalents, receivables, accounts payable and accrued liabilities are recorded at their carrying value. We believe the carrying value of these financial instruments approximates fair value. Our fair value assessment incorporates a variety of considerations, including: • the short term duration of the instruments (less than one percent for both our trade payables and our third-party receivables have been outstanding for greater than 90 days ); and • the expected future insignificance of bad debt expense, which includes an evaluation of counterparty credit risk. The evaluation of our third-party receivables with a short-term duration excludes amounts that are greater than 90 days related to the XTO Energy Inc.’s (“XTO”) legal dispute with QEP Field Services, LLC (“QEPFS”). See further discussion regarding the XTO litigation in Note 6. The fair value of our senior notes is based on prices from recent trade activity and is categorized in level 2 of the fair value hierarchy. The borrowings under our amended secured revolving credit facility (the “Revolving Credit Facility”) and our secured dropdown credit facility (“Dropdown Credit Facility”), which include a variable interest rate, approximate fair value. The carrying value and fair value of our debt were approximately $3.8 billion and $4.0 billion as of March 31, 2017 , respectively, and were approximately $4.1 billion and $4.3 billion at December 31, 2016 , respectively. These carrying and fair values of our debt do not consider the unamortized issuance costs, which are netted against our total debt. NEW ACCOUNTING STANDARDS AND DISCLOSURES REVENUE RECOGNITION. In May 2014, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2014-09, “Revenue from Contracts with Customers” (“ASU 2014-09”), and has since amended the standard with ASU 2015-14, “Revenue From Contracts with Customers: Deferral of the Effective Date,” ASU 2016-08, ”Revenue From Contracts with Customers: Principal versus Agent Considerations (Reporting Revenue Gross versus Net),” ASU 2016-10, “Revenue From Contracts with Customers: Identifying Performance Obligations and Licensing,” and ASU 2016-12, “Revenue From Contracts with Customers: Narrow-Scope Improvements and Practical Expedients.” These standards replace existing revenue recognition rules with a single comprehensive model to use in accounting for revenue arising from contracts with customers. We are required to adopt ASU 2014-09 on January 1, 2018. We preliminarily expect to transition to the new standard under the modified retrospective transition method, whereby a cumulative effect adjustment is recognized upon adoption and the guidance is applied prospectively. We are progressing through our implementation plan and continue to evaluate the impact of the standard’s revenue recognition model on our contracts with customers in the gathering and processing and terminalling and transportation segments along with our business processes, accounting systems, controls and financial statement disclosures. While we have made substantial progress in our review and documentation of the impact of the standard on our revenue agreements, we continue to assess the impact in certain other areas where industry consensus continues to be formed such as agreements with terms that include non-cash consideration, contributions in aid of construction, tiered pricing structures and other unique considerations. At this time, we are unable to estimate the full impact of the standard until the industry reaches a consensus on certain industry specific issues. However, we do expect some impact on presentation and disclosures in our financial statements. LEASES. In February 2016, the FASB issued ASU 2016-02, “Leases” (“ASU 2016-02”), which amends existing accounting standards for lease accounting and adds additional disclosures about leasing arrangements. Under the new guidance, lessees are required to recognize right-of-use assets and lease liabilities on the balance sheet for all leases with terms longer than 12 months. Leases will be classified as either a finance lease or operating lease with the classification affecting the pattern of expense recognition in the income statement and presentation of cash flows in the statement of cash flows. ASU 2016-02 is effective for annual reporting periods beginning after December 15, 2018, and interim reporting periods within those annual reporting periods. Early adoption is permitted and modified retrospective application is required, however, we do not intend to early adopt the standard. While it is early in our assessment of the impacts from this standard, we expect the recognition of right-of-use assets and lease liabilities not currently reflected in our balance sheet could have a material impact on total assets and liabilities. Additionally, we expect the presentation changes required for amounts currently reflected in our statement of operations to impact certain financial statement line items. We cannot estimate the impact on our business processes, accounting systems, controls and financial statement disclosures due to the implementation of this standard given the preliminary stage of our assessment. CREDIT LOSSES. In June 2016, the FASB issued ASU 2016-13, “Measurement of Credit Losses on Financial Instruments” (“ASU 2016-13”), which amends guidance on the impairment of financial instruments. The ASU estimates credit losses based on expected losses and provides for a simplified accounting model for purchased financial assets with credit deterioration. ASU 2016-13 is effective for annual reporting periods beginning after December 15, 2019, and interim reporting periods within those annual reporting periods. Early adoption is permitted for annual reporting periods beginning after December 15, 2018. While we are still evaluating the impact of ASU 2016-13, we do not expect the adoption of this standard to have a material impact on our financial statements. DEFINITION OF A BUSINESS. In January 2017, the FASB issued ASU 2017-01, “Clarifying the Definition of a Business” (“ASU 2017-01”), which revises the definition of a business and assists in the evaluation of when a set of transferred assets and activities is a business. ASU 2017-01 is effective for interim and annual reporting periods beginning after December 15, 2017, and should be applied prospectively on or after the effective date. Early adoption is permitted under certain circumstances. At this time, we are evaluating the potential impact of this standard on our financial statements and whether we will early adopt this standard in 2017. GOODWILL. In January 2017, the FASB issued ASU 2017-04, “Simplifying the Test for Goodwill Impairment” (“ASU 2017-04”), which eliminates the second step from the goodwill impairment test that required goodwill impairments to be measured at the amount the carrying amount of goodwill exceeded the implied fair value of reporting unit goodwill. Instead, an entity can perform its annual, or interim, goodwill impairment test by comparing the fair value of a reporting unit with its carrying amount with any impairment being limited to the total amount of goodwill allocated to that reporting unit. ASU 2017-04 is effective for interim and annual reporting periods beginning after December 15, 2019 and should be applied on a prospective basis. As permitted under ASU 2017-04, we have elected to early adopt this standard for our 2017 goodwill impairment tests to be performed as of November 1, 2017. The adoption of this standard is not expected to have a material impact on our financial statements. PENSION AND POSTRETIREMENT COSTS. In March 2017, the FASB issued ASU 2017-07, “Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost” (“ASU 2017-07”), which requires the current service-cost component of net benefit costs to be presented similarly with other current compensation costs for related employees on the condensed statement of consolidated operations and stipulates that only the service cost component of net benefit cost is eligible for capitalization. Additionally, the Partnership will present other components of net benefit costs elsewhere on the condensed statement of consolidated operations since these costs are allocated to the Partnership’s financial statements by Tesoro. ASU 2017-07 is effective for interim and annual reporting periods beginning after December 15, 2017, with early adoption permitted in the first quarter of 2017 only. The amendments to the presentation of the condensed statement of consolidated operations in this update should be applied retrospectively while the change in capitalized benefit cost is to be applied prospectively. We have evaluated the impact of this standard on our financial statements and determined there will be no impact to net earnings, but it is expected to have an immaterial impact on other line items such as operating income. We have elected not to early adopt and will implement when the standard becomes effective. |