10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10‑Q

(Mark One)

þ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended September 30, 2016

or

¨ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from_____________________to__________

Commission File Number 1‑3473

TESORO CORPORATION

(Exact name of registrant as specified in its charter)

Delaware		95‑0862768
(State or other jurisdiction of		(I.R.S. Employer
incorporation or organization)		Identification No.)
19100 Ridgewood Pkwy, San Antonio, Texas 78259-1828
(Address of principal executive offices) (Zip Code)
210-626-6000
(Registrant’s telephone number, including area code)

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. YesþNo¨

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files). YesþNo¨

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company. See definitions of “large accelerated filer,” “accelerated filer” and “smaller reporting company” in Rule 12b-2 of the Exchange Act.

Large accelerated filer	þ	Accelerated filer	¨
Non-accelerated filer	¨(Do not check if a smaller reporting company)	Smaller reporting company	¨

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes¨Noþ

There were 116,876,756 shares of the registrant’s Common Stock outstanding at October 26, 2016.

TABLE OF CONTENTS

TESORO CORPORATION

QUARTERLY REPORT ON FORM 10-Q

FOR THE QUARTERLY PERIOD ENDED SEPTEMBER 30, 2016

PART I. FINANCIAL INFORMATION	Page
Item 1. Financial Statements (Unaudited)
Condensed Statements of Consolidated Operations - Three and Nine Months Ended September 30, 2016 and 2015	3
Condensed Consolidated Balance Sheets - September 30, 2016 and December 31, 2015	4
Condensed Statements of Consolidated Cash Flows - Nine Months Ended September 30, 2016 and 2015	5
Notes to Condensed Consolidated Financial Statements	6
Item 2. Management's Discussion and Analysis of Financial Condition and Results of Operations	30
Item 3. Quantitative and Qualitative Disclosures About Market Risk	55
Item 4. Controls and Procedures	57
PART II. OTHER INFORMATION
Item 1. Legal Proceedings	58
Item 1A. Risk Factors	58
Item 2. Unregistered Sales of Equity Securities and Use of Proceeds	59
Item 5. Other Information	59
Item 6. Exhibits	59
SIGNATURES	62

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FINANCIAL STATEMENTS

PART I - FINANCIAL INFORMATION

ITEM 1. FINANCIAL STATEMENTS

TESORO CORPORATION

CONDENSED STATEMENTS OF CONSOLIDATED OPERATIONS

(Unaudited)

	Three Months Ended September 30,						Nine Months Ended September 30,
	2016			2015			2016			2015
	(In millions, except per share amounts)
Revenues (a)	$	6,544		$	7,743		$	17,930		$	22,438
Costs and Expenses
Cost of sales (excluding the lower of cost or market inventory valuation adjustment) (a)	5,232			5,429			14,114			17,090
Lower of cost or market inventory valuation adjustment	(20		)	83			(236		)	41
Operating expenses	652			640			1,872			1,816
Selling, general and administrative expenses	107			103			283			285
Depreciation and amortization expenses	211			192			633			553
Loss on asset disposals and impairments	2			4			7			12
Operating Income	360			1,292			1,257			2,641
Interest and financing costs, net	(70		)	(54		)	(190		)	(163		)
Equity in earnings of equity method investments	7			6			12			9
Other income, net	—			13			32			12
Earnings Before Income Taxes	297			1,257			1,111			2,499
Income tax expense	95			458			362			888
Net Earnings from Continuing Operations	202			799			749			1,611
Earnings (loss) from discontinued operations, net of tax	(1		)	—			10			(4		)
Net Earnings	201			799			759			1,607
Less: Net earnings from continuing operations attributable to noncontrolling interest	32			40			103			121
Net Earnings Attributable to Tesoro Corporation	$	169		$	759		$	656		$	1,486
Net Earnings (Loss) Attributable to Tesoro Corporation
Continuing operations	$	170		$	759		$	646		$	1,490
Discontinued operations	(1		)	—			10			(4		)
Total	$	169		$	759		$	656		$	1,486
Net Earnings (Loss) per Share - Basic
Continuing operations	$	1.44		$	6.19		$	5.43		$	11.98
Discontinued operations	(0.01		)	—			0.08			(0.03		)
Total	$	1.43		$	6.19		$	5.51		$	11.95
Weighted average common shares outstanding - Basic	118.2			122.5			119.1			124.3
Net Earnings (Loss) per Share - Diluted
Continuing operations	$	1.43		$	6.13		$	5.37		$	11.85
Discontinued operations	(0.01		)	—			0.08			(0.03		)
Total	$	1.42		$	6.13		$	5.45		$	11.82
Weighted average common shares outstanding - Diluted	119.3			123.8			120.4			125.7
Dividends per Share	$	0.55		$	0.50		$	1.55		$	1.35
Supplemental Information
(a)Includes excise taxes collected by our marketing            segment	$	146		$	137		$	436		$	423

The accompanying notes are an integral part of these condensed consolidated financial statements.

September 30, 2016 | 3

FINANCIAL STATEMENTS

TESORO CORPORATION

CONDENSED CONSOLIDATED BALANCE SHEETS

(Unaudited)

	September 30, 2016			December 31, 2015
	(In millions, except share data)
ASSETS
Current Assets
Cash and cash equivalents (TLLP: $497 and $16, respectively)	$	1,387		$	942
Receivables, net of allowance for doubtful accounts	1,037			792
Inventories, net	2,317			2,302
Prepayments and other current assets	364			271
Total Current Assets	5,105			4,307
Property, Plant and Equipment, Net (TLLP: $3,129 and $3,467, respectively)	9,769			9,541
Acquired Intangibles, Net (TLLP: $955 and $976, respectively)	1,287			1,211
Other Noncurrent Assets, Net (TLLP: $492 and $214, respectively)	1,844			1,273
Total Assets	$	18,005		$	16,332
LIABILITIES AND EQUITY
Current Liabilities
Accounts payable	$	1,547		$	1,568
Other current liabilities	1,146			962
Total Current Liabilities	2,693			2,530
Deferred Income Taxes	1,438			1,222
Debt, Net of Unamortized Issuance Costs (TLLP: $3,382 and $2,844, respectively)	4,667			4,067
Other Noncurrent Liabilities	1,012			773
Total Liabilities	9,810			8,592
Commitments and Contingencies (Note 9)
Equity
Tesoro Corporation Stockholders’ Equity
Common stock, par value $0.162/3; authorized 200,000,000 shares; 159,447,688 shares issued (158,457,663 in 2015)	27			26
Additional paid-in capital	1,465			1,391
Retained earnings	6,424			5,954
Treasury stock, 42,480,330 common shares (39,064,342 in 2015), at cost	(2,277		)	(2,009		)
Accumulated other comprehensive loss, net of tax	(139		)	(149		)
Total Tesoro Corporation Stockholders’ Equity	5,500			5,213
Noncontrolling Interest	2,695			2,527
Total Equity	8,195			7,740
Total Liabilities and Equity	$	18,005		$	16,332

The accompanying notes are an integral part of these condensed consolidated financial statements.

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FINANCIAL STATEMENTS

TESORO CORPORATION

CONDENSED STATEMENTS OF CONSOLIDATED CASH FLOWS

(Unaudited)

	Nine Months Ended September 30,
	2016			2015
	(In millions)
Cash Flows From (Used In) Operating Activities
Net earnings	$	759		$	1,607
Adjustments to reconcile net earnings to net cash from operating activities:
Depreciation and amortization expenses	633			553
Lower of cost or market inventory valuation adjustment, net	(236		)	41
Stock-based compensation expense	21			57
Deferred income taxes	182			157
Turnaround and branding charges	(278		)	(248		)
Other non-cash operating activities	19			—
Changes in current assets and current liabilities	52			(288		)
Changes in noncurrent assets and noncurrent liabilities	49			(32		)
Net cash from operating activities	1,201			1,847
Cash Flows From (Used In) Investing Activities
Capital expenditures	(623		)	(773		)
Acquisitions, net of cash	(412		)	(6		)
Proceeds from asset sales	18			—
Other investing activities	(3		)	(4		)
Net cash used in investing activities	(1,020		)	(783		)
Cash Flows From (Used In) Financing Activities
Borrowings under revolving credit agreements	761			346
Repayments on revolving credit agreements	(666		)	(326		)
Proceeds from debt offering	701			—
Repayments of debt	(258		)	(402		)
Dividend payments	(186		)	(169		)
Net proceeds from issuance of Tesoro Logistics LP common units	364			71
Distributions to noncontrolling interest	(155		)	(135		)
Purchases of common stock	(242		)	(494		)
Taxes paid related to net share settlement of equity awards	(25		)	(45		)
Other financing activities	(30		)	49
Net cash from (used in) financing activities	264			(1,105		)
Increase (Decrease) in Cash and Cash Equivalents	445			(41		)
Cash and Cash Equivalents, Beginning of Period	942			1,000
Cash and Cash Equivalents, End of Period	$	1,387		$	959

The accompanying notes are an integral part of these condensed consolidated financial statements.

September 30, 2016 | 5

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED)

NOTE 1 – BASIS OF PRESENTATION

ORGANIZATION

As used in this report, the terms “Tesoro,” the “Company,” “we,” “us” or “our” may refer to Tesoro Corporation, one or more of its consolidated subsidiaries or all of them taken as a whole. The words “we,” “us” or “our” generally include Tesoro Logistics LP (“TLLP”) and its subsidiaries as consolidated subsidiaries of Tesoro Corporation with certain exceptions where there are transactions or obligations between TLLP and Tesoro Corporation or its other subsidiaries. When used in descriptions of agreements and transactions, “TLLP” or the “Partnership” refers to TLLP and its consolidated subsidiaries.

PRINCIPLES OF CONSOLIDATION AND BASIS OF PRESENTATION

PRINCIPLES OF CONSOLIDATION. The interim condensed consolidated financial statements and notes thereto of Tesoro Corporation and its subsidiaries 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. The consolidated balance sheet at December 31, 2015 has been condensed from the audited consolidated financial statements at that date. Certain information and notes normally included in financial statements prepared in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”) have been condensed or omitted pursuant to the SEC’s rules and regulations. However, management believes that the disclosures presented herein are adequate to present the information fairly. The accompanying 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, 2015.

BASIS OF PRESENTATION. We prepare our condensed consolidated financial statements in conformity with U.S. GAAP, which requires management to make estimates and assumptions that affect the reported amounts and disclosures of assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the periods presented. We review our estimates on an ongoing basis. Changes in facts and circumstances may result in revised estimates and actual results could differ from those estimates. The results of operations for any interim period are not necessarily indicative of results for the full year. Certain prior year balances have been aggregated or disaggregated in order to conform to the current year presentation.

Certain reclassifications have been made to prior period presentations to conform to the current year. In the first quarter of 2016, we revised the process by which we reclassify certain logistics costs, primarily recognized by TLLP, during consolidation from operating expenses and selling, general and administrative expense to costs of sales. This better reflects the distribution costs related to Tesoro’s sale of refined products during the ordinary course of business. This change in process did not impact current or prior segment operating results. However, we reclassified $59 million and $178 million from costs of sales and recognized $51 million and $140 million in operating expenses and $8 million and $38 million in selling, general and administrative expenses of the condensed statement of consolidated operations for the three and nine months ended September 30, 2015, respectively, to conform to current period presentation.

For the three months ended September 30, 2016 there was no change and for the nine months ended September 30, 2016, accumulated other comprehensive income decreased $10 million, net of tax, due to the recognition of a settlement loss for one of our executive retirement plans and remeasurement of the pension liability. Due to there being no material impact to accumulated other comprehensive income for the three and nine months ended September 30, 2016 and 2015, consolidated statements of comprehensive income have been omitted.

TLLP.Our condensed consolidated financial statements include TLLP, a variable interest entity. TLLP is a publicly traded limited partnership that was formed to own, operate, develop and acquire logistics assets. Its assets are integral to the success of Tesoro’s refining and marketing operations and are used to gather crude oil and natural gas, process natural gas, and distribute, transport and store crude oil and refined products. TLLP provides us with various terminal distribution, storage, pipeline transportation, natural gas liquids processing, trucking and petroleum-coke handling services under long-term, fee-based commercial agreements. Many of these agreements, with the exception of the storage and transportation services agreement, contain minimum volume commitments. We do not provide financial or equity support through any liquidity arrangements or financial guarantees to TLLP.

Tesoro Logistics GP, LLC (“TLGP”), our wholly-owned subsidiary, serves as the general partner of TLLP. We held an approximate 34% and 36% interest in TLLP at September 30, 2016 and December 31, 2015, respectively, including the general partner interest (approximately 2% at both September 30, 2016 and December 31, 2015) and all of the incentive distribution rights. This interest at September 30, 2016 includes 33,194,109 common units and 2,083,330 general partner units. As the general partner of TLLP, we have the sole ability to direct the activities of TLLP that most significantly impact its economic performance. We are also

6| Tesoro Corporation

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED)

considered to be the primary beneficiary for accounting purposes and are TLLP’s primary customer. In the event TLLP incurs a loss, our operating results will reflect TLLP’s loss, net of intercompany eliminations. Under our various long-term, fee-based commercial agreements with TLLP, transactions with us accounted for 60% and 58% of TLLP’s total revenues for the three and nine months ended September 30, 2016, respectively, and 54% and 55% of TLLP’s total revenues for the three and nine months ended September 30, 2015, respectively.

DISCONTINUED OPERATIONS.On September 25, 2013, we completed the sale of all of our interest in Tesoro Hawaii, LLC, which operated a 94 thousand barrels per day (“Mbpd”) Hawaii refinery, retail stations and associated logistics assets (the “Hawaii Business”). The results of operations for this business have been presented as discontinued operations in the condensed statements of consolidated operations for the three and nine months ended September 30, 2016 and 2015. There were no revenues for either the three and nine months ended September 30, 2016 or 2015. We recorded a loss for the three months ended September 30, 2016 of $1 million both before and after tax. There was no gain or loss recorded for the three months ended September 30, 2015. We recorded a gain for the nine months ended September 30, 2016 of $16 million and $10 million before and after tax, respectively, related to the calendar year 2015 earn-out owed to Tesoro. There was a $6 million and $4 millionrecorded loss before and after tax, respectively, for the nine months ended September 30, 2015. Cash flows from discontinued operations were $2 million for the nine months ended September 30, 2016 and cash flows used in discontinued operations were $2 million for the nine months ended September 30, 2015. Unless otherwise noted, the information in the notes to the condensed consolidated financial statements relates to our continuing operations.

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, “Deferral of the Effective Date, “ASU 2016-08, “Principal versus Agent Considerations (Reporting Revenue Gross versus Net),” ASU 2016-10, “Identifying Performance Obligations and Licensing,” and ASU 2016-12, “Narrow-Scope Improvements and Practical Expedients.” These standards provide accounting guidance for all revenue arising from contracts to provide goods or services to customers. ASU 2014-09 is effective for interim and annual periods beginning after December 15, 2017. Early adoption as of January 1, 2017 is permitted; however, we do not intend to adopt early. The standard allows for either full retrospective adoption or modified retrospective adoption. We are currently evaluating the impact of the standard on our financial statements and related disclosures. Based on our initial evaluation, the adoption of the standard is not expected to have a material impact on the amount or timing of revenue recognized.

CONSOLIDATION.In February 2015, the FASB issued ASU 2015-02, “Amendments to the Consolidation Analysis” (“ASU 2015-02”). This standard modifies existing consolidation guidance for reporting organizations that are required to evaluate whether they should consolidate certain legal entities. ASU 2015-02 is effective for interim and annual periods beginning after December 15, 2015, and requires either a retrospective or a modified retrospective approach to adoption. We adopted this guidance using the modified retrospective approach as of January 1, 2016 and performed the required reassessments outlined by the guidance. For further information on the results of the reassessments, refer to Note 4, Investments - Equity Method and Joint Ventures.

BUSINESS COMBINATIONS.In September 2015, the FASB issued ASU 2015-16, “Simplifying the Accounting for Measurement-Period Adjustments” (“ASU 2015-16”). The standard requires an acquirer to recognize the cumulative impact of adjustments to provisional purchase price amounts that are identified during the measurement period in the reporting period, in which the adjustment amounts are determined. The standard also requires an entity to present separately on the face of the income statement or disclose in the notes the portion of the amount recorded in current-period earnings by line item that would have been recorded in previous reporting periods if the adjustment to the provisional amounts had been recognized as of the acquisition date. ASU 2015-16 is effective for interim and annual periods beginning after December 15, 2015 and must be applied prospectively to adjustments that occur after the effective date. We adopted this guidance as of January 1, 2016 with no impact to our financial statements.

LEASES.In February 2016, the FASB issued ASU 2016-02, “Leases” (“ASU 2016-02”), which improves transparency and comparability among organizations by requiring lessees to recognize a lease liability and a corresponding lease asset for virtually all lease contracts. It also requires additional disclosures about leasing arrangements. ASU 2016-02 is effective for interim and annual periods beginning after December 15, 2018, and requires a modified retrospective approach to adoption. Early adoption is permitted. At this time, we are evaluating the potential impact of this standard on our financial statements.

SHARE-BASED COMPENSATION. In March 2016, the FASB issued ASU 2016-09, “Improvements to Employee Share-Based Payment Accounting” (“ASU 2016-09”), which simplifies several aspects of the accounting for employee share-based payment transactions including accounting for income taxes, cash flow presentation of tax impacts, forfeitures, and liability versus equity accounting due to statutory tax withholding requirements. ASU 2016-09 is effective for interim and annual periods beginning

September 30, 2016 | 7

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED)

after December 15, 2016, with early adoption permitted. As of January 1, 2016, we early adopted ASU 2016-09 and with respect to the guidance on forfeitures, we have elected to continue to estimate forfeitures on the date of grant to account for the estimated number of awards for which the requisite service period will not be rendered. The adoption of ASU 2016-09 had a $16 million impact for the nine months ended September 30, 2016, resulting in a lower effective tax rate and immaterial changes to our cash flow presentation. There was no additional benefit related to additional share vestings during the three months ended September 30, 2016.

STATEMENT OF CASH FLOWS. In August 2016, the FASB issued ASU 2016-15, “Clarification of Certain Cash Receipts and Cash Payments” (“ASU 2016-15”), which eliminates the diversity in practice related to the classification of certain cash receipts and payments in the statement of cash flows, by adding or clarifying guidance on eight specific cash flow issues. ASU 2016-15 is effective for interim and annual reporting periods beginning after December 15, 2017, with early adoption permitted. The amendments in this update should be applied retrospectively to all periods presented, unless deemed impracticable, in which case, prospective application is permitted. At this time, we are evaluating the potential impact of this standard on our financial statements.

NOTE 2 – INVENTORIES

COMPONENTS OF INVENTORIES (in millions)

	September 30, 2016			December 31, 2015
Domestic crude oil and refined products	$	2,050		$	2,142
Foreign subsidiary crude oil	159			325
Materials and supplies	150			140
Oxygenates and by-products	81			54
Less: Lower of cost or market reserve	(123		)	(359		)
Total Inventories, Net	$	2,317		$	2,302

We recorded a lower of cost or market reserve of $123 million and $359 million at September 30, 2016 and December 31, 2015, respectively, to cost of sales for our crude oil, refined products, oxygenates and by-product inventories to adjust the carrying value of our inventories to reflect replacement cost as of those reporting dates. We reverse any lower of cost or market reserve in the subsequent period because the inventories are sold or used and then perform a complete lower of cost or market assessment of ending inventories at the end of each reporting period to determine if a reserve is required.

NOTE 3 – PROPERTY, PLANT AND EQUIPMENT

PROPERTY, PLANT AND EQUIPMENT, AT COST (in millions)

	September 30, 2016			December 31, 2015
Refining	$	8,210		$	7,457
TLLP	3,642			3,894
Marketing	929			915
Corporate	381			296
Property, Plant and Equipment, at Cost	13,162			12,562
Accumulated depreciation	(3,393		)	(3,021		)
Property, Plant and Equipment, Net	$	9,769		$	9,541

We capitalize interest as part of the cost of major projects during the construction period. Capitalized interest totaled $8 millionand $9 million for the three months ended September 30, 2016 and 2015, respectively, and $20 million and $27 million for the nine months ended September 30, 2016 and 2015, respectively, and is recorded as a reduction to net interest and financing costs in our condensed statements of consolidated operations.

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NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED)

ACQUISITIONS

Individually and on an aggregate basis, the following acquisitions were immaterial to our condensed consolidated financial statements.

GREAT NORTHERN MIDSTREAM. On January 8, 2016, we closed the acquisition of Great Northern Midstream LLC, a crude oil logistics provider which owns and operates a crude oil pipeline and gathering system, along with transportation, storage and rail loading facilities in the Williston Basin of North Dakota. The acquisition includes a 97-mile crude oil pipeline, a proprietary 28-mile gathering system in the core of the Bakken, and a facility that has capacity of 154 Mbpd for rail loading and 657,000 barrels of storage in Fryburg, North Dakota.

FLINT HILLS RESOURCES. On June 20, 2016, we closed the acquisition of Flint Hills Resources’ (“FHR”) wholesale marketing and logistics assets in Anchorage and Fairbanks, Alaska. This acquisition includes all FHR’s wholesale fuel marketing contracts in Alaska and an Anchorage terminal with 580,000 barrels of storage capacity, a truck rack, and rail loading capability. In addition, the acquisition includes a Fairbanks airport terminal that includes 22,500 barrels of jet fuel storage and a truck rack, as well as a multi-year terminalling agreement at FHR’s North Pole terminal, which will provide efficient rail offload capabilities and provide access to Alaska’s interior. The terminalling and storage assets acquired were sold to TLLP during the third quarter of 2016.

DAKOTA PRAIRIE REFINING. On June 28, 2016, we acquired Dakota Prairie Refining, LLC, which owns a refinery near Dickinson, North Dakota, with strategic access to advantaged Bakken crude oil and is located just 100 miles west of the Tesoro Mandan Refinery. This acquired refinery has a crude oil capacity of 20 Mbpd and produces ultra-low sulfur diesel, naphtha and atmospheric residuals. Tesoro plans to continue to market the ultra-low sulfur diesel to local customers and utilize the naphtha and atmospheric residuals in its integrated value chain system.

VIRENT. On September 28, 2016, we acquired Virent, Inc. (“Virent”), an innovative renewable fuels and chemicals company, to support Virent in bringing its biofuels technology to commercial scale. Virent's BioForming® technology can convert sugars and other biomass derived feedstocks into renewable gasoline blendstocks and aromatics, which are fully compatible with the nation's existing fuel infrastructure and current vehicle warranties. Virent's aromatics product can also be used for renewable chemicals, most notably para-xylene, a key component in polyester.

NOTE 4 – INVESTMENTS - EQUITY METHOD AND JOINT VENTURES

For each of the following investments, we have the ability to exercise significant influence over each of these investments through our participation in the management committees, which make all significant decisions. However, since we have equal or proportionate influence over each committee as a joint interest partner and all significant decisions require consent of the other investor(s) without regard to our economic interest, we have determined that these entities should not be consolidated and apply the equity method of accounting with respect to our investments in each entity.

• WATSON COGENERATION COMPANY (“Watson”). We own a 51% interest in Watson, which produces steam and electricity at a facility located at our Los Angeles refinery. Our transactions with Watson, which do not have intra-entity profits requiring elimination, consist of sales of fuel gas and water, purchases of steam and electricity and charges for general and administrative support.

• RENDEZVOUS GAS SERVICES, L.L.C. (“RGS”). TLLP has a 78% interest in RGS, which owns and operates the infrastructure that transports gas from certain fields to several re-delivery points in southwestern Wyoming, including natural gas processing facilities that are owned by TLLP or a third party. Prior to 2016, Tesoro and TLLP consolidated RGS, however, upon the reassessment performed in conjunction with the adoption of ASU 2015-02 as of January 1, 2016, we determined RGS represents a variable interest entity to TLLP for which we are not the primary beneficiary. Under the limited liability company agreement, we do not have voting rights commensurate with our economic interest due to veto rights available to our partner in RGS. Certain business decisions, including, but not limited to, decisions with respect to significant expenditures or contractual commitments, annual budgets, material financings, dispositions of assets or amending the members’ gas servicing agreements, require unanimous approval of the members.

• THREE RIVERS GATHERING, LLC (“TRG”). TLLP owns a 50% interest in TRG which operates natural gas gathering assets within the southeastern Uinta Basin and is primarily supported by long-term, fee-based gas gathering agreements with minimum volume commitments.

• UINTAH BASIN FIELD SERVICES, L.L.C. (“UBFS”). TLLP owns a 38% interest in UBFS which owns and operates the natural gas gathering infrastructure located in the southeastern Uinta Basin and is supported by long-term, fee-based gas gathering agreements that contain firm throughput commitments, which generate fees whether or not the capacity is used, and is operated by TLLP.

September 30, 2016 | 9

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED)

EQUITY METHOD INVESTMENTS (in millions)

	Watson			Vancouver Energy			TLLP
							RGS			TRG			UBFS			Total
Balance at December 31, 2015	$	92		$	9		$	—		$	42		$	16		$	159
Effect of deconsolidation (a)	—			—			295			—			—			295
Effect of consolidation (b)	—			(8		)	—			—			—			(8		)
Equity in earnings (loss)	3			(1		)	6			2			2			12
Distributions received	(5		)	—			(16		)	(3		)	(2		)	(26		)
Balance at September 30, 2016	$	90		$	—		$	285		$	41		$	16		$	432

(a) The reassessment of the investments performed by TLLP resulted in the deconsolidation of RGS and the reporting of RGS as an equity method investment. TLLP recognized an increase of $295 million to equity method investments as of January 1, 2016 as a result of the deconsolidation in addition to a cumulative effect reduction to opening equity of $2 million related to the difference in earnings under the equity method of accounting in prior periods. The carrying amount of our investment in RGS exceeded the underlying equity in net assets by $137 million at September 30, 2016.

(b) Effective September 1, 2016, we became majority owner of our venture with Savage Companies to construct, own and operate a unit train unloading and marine loading terminal at Port of Vancouver, USA (the “Vancouver Energy” terminal). As a result, Vancouver Energy was consolidated.

NOTE 5 – DERIVATIVE INSTRUMENTS

In the ordinary course of business, our profit margins, earnings and cash flows are impacted by the timing, direction and overall change in pricing for commodities used throughout our operations. We use non-trading derivative instruments to manage our exposure to the following:

• price risks associated with the purchase or sale of feedstocks, refined products and energy supplies related to our refineries, terminals, marketing fuel inventory and customers;

• price risks associated with inventories above or below our target levels;

• future emission credit requirements; and

• exchange rate fluctuations on our purchases of Canadian crude oil.

Our accounting for derivative instruments depends on whether the underlying commodity will be used or sold in the normal course of business. For contracts where the crude oil or refined products are expected to be used or sold in the normal course of business, we apply the normal purchase normal sale exception and follow the accrual method of accounting. All other derivative instruments are recorded at fair value using mark-to-market accounting.

Our derivative instruments can include forward purchase and sale contracts (“Forward Contracts”), exchange-traded futures (“Futures Contracts”), over-the-counter swaps, including those cleared on an exchange (“Swap Contracts”), options (“Options”), and over-the-counter options (“OTC Option Contracts”). Forward Contracts are agreements to buy or sell the commodity at a predetermined price at a specified future date. Futures Contracts are standardized agreements, traded on a futures exchange, to buy or sell the commodity at a predetermined price at a specified future date. Options provide the right, but not the obligation to buy or sell the commodity at a specified price in the future. Swap Contracts and OTC Option Contracts require cash settlement for the commodity based on the difference between a contracted fixed or floating price and the market price on the settlement date. Certain of these contracts require cash collateral to be received or paid if our asset or liability position, respectively, exceeds specified thresholds. We believe that we have minimal credit risk with respect to our counterparties.

The following table presents the fair value of our derivative instruments as of September 30, 2016 and December 31, 2015. The fair value amounts below are presented on a gross basis and do not reflect the netting of asset and liability positions permitted under the terms of our master netting arrangements including cash collateral on deposit with, or received from, brokers. We offset the recognized fair value amounts for multiple derivative instruments executed with the same counterparty in our financial statements when a legal right of offset exists. As a result, the asset and liability amounts below will not agree with the amounts presented in our condensed consolidated balance sheets.

10| Tesoro Corporation

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED)

DERIVATIVE ASSETS AND LIABILITIES (in millions)

		Derivative Assets						Derivative Liabilities
	Balance Sheet Location	September 30, 2016			December 31, 2015			September 30, 2016			December 31, 2015
Commodity Futures Contracts	Prepayments and other current assets	$	718		$	711		$	721		$	673
Commodity Swap Contracts	Prepayments and other current assets	7			15			7			14
Commodity Swap Contracts	Receivables	2			7			—			—
Commodity Forward Contracts	Receivables	3			2			—			—
Commodity Forward Contracts	Accounts payable	—			—			2			4
Total Gross Mark-to-Market Derivatives		730			735			730			691
Less: Counterparty Netting and Cash Collateral (a)		(696		)	(675		)	(723		)	(687		)
Total Net Fair Value of Derivatives		$	34		$	60		$	7		$	4

(a) Certain of our derivative contracts, under master netting arrangements, include both asset and liability positions. We offset both the fair value amounts and any related cash collateral amounts recognized for multiple derivative instruments executed with the same counterparty when there is a legally enforceable right and an intention to settle net or simultaneously. As of September 30, 2016 and December 31, 2015, we had provided cash collateral amounts of $27 million and $12 million, respectively, related to our unrealized derivative positions. Cash collateral amounts are netted with mark-to-market derivative assets.

GAINS (LOSSES) ON MARK-TO-MARKET DERIVATIVES (in millions)

	Three Months Ended September 30,					Nine Months Ended September 30,
	2016		2015			2016			2015
Commodity Contracts	$	19	$	153		$	(25	)	$	122
Foreign Currency Forward Contracts	—		(3		)	1			(5		)
Total Gain (Loss) on Mark-to-Market Derivatives	$	19	$	150		(24		)	$	117

INCOME STATEMENT LOCATION OF GAINS (LOSSES) ON MARK-TO-MARKET DERIVATIVES (in millions)

	Three Months Ended September 30,					Nine Months Ended September 30,
	2016		2015			2016			2015
Revenues	$	10	$	30		$	5		$	28
Cost of sales	9		123			(30		)	94
Other income (expense), net	—		(3		)	1			(5		)
Total Gain (Loss) on Mark-to-Market Derivatives	$	19	$	150		$	(24	)	$	117

September 30, 2016 | 11

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED)

OPEN LONG (SHORT) POSITIONS

OUTSTANDING COMMODITY AND OTHER CONTRACTS (units in thousands)

	Contract Volumes by Year of Maturity			Unit of Measure
Mark-to-Market Derivative Instrument	2016	2017	2018
Crude oil, refined products and blending products:
Futures - short	—	(4,854)	(75)	Barrels
Futures - long	2,720	—	—	Barrels
Swaps - short	(2,225)	—	—	Barrels
Forwards - short	(970)	—	—	Barrels
Carbon emissions credits:
Futures - long	4,850	1,000	—	Tons
Corn:
Futures - short	(3,245)	—	—	Bushels

At September 30, 2016, we had open Forward Contracts to purchase CAD $28 million that were settled on October 24, 2016.

NOTE 6 – FAIR VALUE MEASUREMENTS

We classify financial assets and liabilities according to the fair value hierarchy. Financial assets and liabilities classified as level 1 instruments are valued using quoted prices in active markets for identical assets and liabilities. Level 2 instruments are valued using quoted prices for similar assets and liabilities in active markets, and inputs other than quoted prices, such as liquidity, that are observable for the asset or liability. Our level 2 instruments include derivatives valued using market quotations from independent price reporting agencies, third-party brokers and commodity exchange price curves that are corroborated with market data. Level 3 instruments are valued using significant unobservable inputs that are not supported by sufficient market activity. We do not have any financial assets or liabilities classified as level 3 at September 30, 2016 or December 31, 2015.

Our financial assets and liabilities measured at fair value on a recurring basis include derivative instruments. Additionally, our financial liabilities include obligations for Renewable Identification Numbers (“RINs”) and cap and trade emission credits for the state of California (together with RINs, our “Environmental Credit Obligations”). See Note 5 for further information on our derivative instruments. Our Environmental Credit Obligations represent the estimated fair value amount at each balance sheet date for which we do not have sufficient RINs and California cap and trade credits to satisfy our obligations to the U.S. Environmental Protection Agency (“EPA”) and the state of California, respectively. RINs are assigned to biofuels produced or imported into the U.S. as required by the EPA, which sets annual obligations for the percentage of biofuels that must be blended into transportation fuels consumed in the U.S. As a producer of petroleum transportation fuels, we are required to either blend biofuels into the products we produce at a rate that will meet the EPA’s obligations or we have to buy RINs in the open market for the portion of our obligation that we do not satisfy through the purchase of biofuels. Our liability for cap and trade emission credits for the state of California represent the deficit of credits to satisfy emission reduction requirements mandated in California’s Assembly Bill 32 for each period which stationary or transportation fuel carbon emissions exceed the level allowed by the regulation.

12| Tesoro Corporation

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED)

FINANCIAL ASSETS AND LIABILITIES AT FAIR VALUE (in millions)

	September 30, 2016
	Level 1		Level 2		Level 3		Netting and Collateral (a)			Total
Assets:
Commodity Futures Contracts	$	716	$	2	$	—	$	(689	)	$	29
Commodity Swap Contracts	—		9		—		(7		)	2
Commodity Forward Contracts	—		3		—		—			3
Total Assets	$	716	$	14	$	—	$	(696	)	$	34
Liabilities:
Commodity Futures Contracts	$	719	$	2	$	—	$	(716	)	$	5
Commodity Swap Contracts	—		7		—		(7		)	—
Commodity Forward Contracts	—		2		—		—			2
Environmental Credit Obligations	—		186		—		—			186
Total Liabilities	$	719	$	197	$	—	$	(723	)	$	193

	December 31, 2015
	Level 1		Level 2		Level 3		Netting and Collateral (a)			Total
Assets:
Commodity Futures Contracts	$	711	$	—	$	—	$	(660	)	$	51
Commodity Swap Contracts	—		22		—		(15		)	7
Commodity Forward Contracts	—		2		—		—			2
Total Assets	$	711	$	24	$	—	$	(675	)	$	60
Liabilities:
Commodity Futures Contracts	$	673	$	—	$	—	$	(673	)	$	—
Commodity Swap Contracts	—		14		—		(14		)	—
Commodity Forward Contracts	—		4		—		—			4
Environmental Credit Obligations	—		40		—		—			40
Total Liabilities	$	673	$	58	$	—	$	(687	)	$	44

(a) Certain of our derivative contracts, under master netting arrangements, include both asset and liability positions. We offset both the fair value amounts and any related cash collateral amounts recognized for multiple derivative instruments executed with the same counterparty when there is a legally enforceable right and an intention to settle net or simultaneously. As of September 30, 2016 and December 31, 2015, we had provided cash collateral amounts of $27 million and $12 million, respectively, related to our unrealized derivative positions. Cash collateral amounts are netted with mark-to-market derivative assets.

We believe the carrying value of our other financial instruments, including cash and cash equivalents, receivables, accounts payable and certain accrued liabilities approximate fair value. Our fair value assessment incorporates a variety of considerations, including the short-term duration of the instruments and the expected continued insignificance of bad debt expense, which includes an evaluation of counterparty credit risk. The borrowings under the Tesoro Corporation revolving credit facility (the “Revolving Credit Facility”), the TLLP senior secured revolving credit agreement (the “TLLP Revolving Credit Facility”) and the secured TLLP drop down credit facility (the “TLLP Dropdown Credit Facility”), which include variable interest rates, approximate fair value. The fair value of our fixed rate debt is based on prices from recent trade activity and is categorized in level 2 of the fair value hierarchy. The carrying value and fair value of our debt were approximately $4.8 billion and $5.0 billion as of September 30, 2016, respectively and $4.1 billion and $4.1 billion at December 31, 2015, respectively. These carrying and fair values of our debt do not consider the unamortized issuance costs, which are netted against our total debt.

September 30, 2016 | 13

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED)

NOTE 7 – DEBT

DEBT BALANCE, NET OF UNAMORTIZED ISSUANCE COSTS (in millions)

	September 30, 2016			December 31, 2015
Total debt (a)	$	4,764		$	4,147
Unamortized issuance costs (b)	(82		)	(74		)
Current maturities	(15		)	(6		)
Debt, Net of Current Maturities and Unamortized Issuance Costs	$	4,667		$	4,067

(a) Total debt related to TLLP, which is non-recourse to Tesoro, except for TLGP, was $3.4 billion and $2.9 billion at September 30, 2016 and December 31, 2015, respectively.

(b) Includes unamortized premiums of $4 million associated with TLLP’s senior notes at both September 30, 2016 and December 31, 2015.

REVOLVING CREDIT FACILITIES

AVAILABLE CAPACITY UNDER CREDIT FACILITIES (in millions)

	Total Capacity		Amount Borrowed as of September 30, 2016		Outstanding Letters of Credit		Available Capacity		Expiration
Tesoro Corporation Revolving Credit Facility	$	2,000	$	—	$	4	$	1,996	September 30, 2020
TLLP Revolving Credit Facility	600		—		—		600		January 29, 2021
TLLP Dropdown Credit Facility	1,000		400		—		600		January 29, 2021
Letter of Credit Facilities	1,555		—		44		1,511
Total Credit Facilities	$	5,155	$	400	$	48	$	4,707

TESORO CORPORATION REVOLVING CREDIT FACILITY. On September 30, 2016, we entered into a new senior revolving credit agreement (the “Revolving Credit Agreement”) with a syndicate of banks and financial institutions that provides for a total available revolving capacity of $2.0 billion. The credit availability is not subject to borrowing base redetermination and is scheduled to mature on September 30, 2020. Once certain conditions are satisfied, the Revolving Credit Agreement allows Tesoro to request an increase in capacity to $2.25 billion prior to an investment grade credit rating from either Moody's Investors Service or S&P Global Ratings and up to $3.0 billion afterward, subject to receiving increased commitments from lenders. We had unused credit availability of approximately 100% of the borrowing capacity at September 30, 2016. The Revolving Credit Agreement replaced Tesoro’s Sixth Amended and Restated Credit Agreement dated January 4, 2013, which was terminated on September 30, 2016.

Borrowings bear interest at either a base rate (3.50% at September 30, 2016), plus the applicable spread, or a Eurodollar rate (0.53% at September 30, 2016 (1M LIBOR)), plus the applicable spread. The applicable spread at September 30, 2016 was0.75% in the case of the base rate and 1.75% in the case of the Eurodollar rate but will vary generally based on the credit ratings in effect on Tesoro’s senior, unsecured, non-credit enhanced long-term debt. The commitment fee for the unused portion of the facility was0.30% at September 30, 2016.

The Revolving Credit Agreement includes certain negative, affirmative and financial covenants, a number of which will either no longer apply or become less restrictive if an investment grade rating from either Moody's Investors Service or S&P Global Ratings is achieved, that may limit or restrict the ability of Tesoro and its subsidiaries to:

• pay dividends and make other distributions with respect to our capital stock and purchase, redeem or retire our capital stock;

• enter into certain hedging agreements;

• incur additional indebtedness;

• sell assets unless the proceeds from those sales are used to repay debt or are reinvested in our business;

• incur liens on assets to secure certain debt;

• engage in certain business activities;

14| Tesoro Corporation

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED)

• make certain payments and distributions from our subsidiaries;

• engage in certain investments, mergers or consolidations and transfers of assets; and

• enter into non-arm’s length transactions with affiliates.

At present, the Revolving Credit Facility is guaranteed by substantially all of Tesoro’s active domestic subsidiaries, excluding TLGP, TLLP and its subsidiaries, certain foreign subsidiaries and other specified subsidiaries and is secured by substantially all of Tesoro’s active domestic subsidiaries’ crude oil and refined product inventories, cash and receivables, other than those of the excluded subsidiaries. If Tesoro achieves an investment grade credit rating from either Moody's Investors Service or S&P Global Ratings, the guarantees and collateral shall be released and the facility will become unsecured.

The Revolving Credit Facility allows us to obtain letters of credit under separate letter of credit agreements for foreign crude oil purchases. Our uncommitted letter of credit agreements had $44 million outstanding as of September 30, 2016. Letters of credit outstanding under these agreements incur fees ranging from 0.40% to0.90% and are secured by the crude oil inventories for which they are issued. Capacity under these letter of credit agreements is available on an uncommitted basis and can be terminated by either party at any time.

TLLP REVOLVING CREDITY FACILITY AND DROPDOWN CREDIT FACILITY.The secured TLLP Revolving Credit Facility provided for total loan availability of $600 million as of September 30, 2016. The secured TLLP Revolving Credit Facility is non-recourse to Tesoro, except for TLGP, and is guaranteed by all of TLLP’s subsidiaries, with the exception of certain non-wholly owned subsidiaries, and secured by substantially all of TLLP’s assets. Borrowings are available under the secured TLLP Revolving Credit Facility up to the total loan availability of the facility. TLLP had no borrowings outstanding under the secured TLLP Revolving Credit Facility, resulting in the full loan availability of the borrowing capacity as of September 30, 2016.

Additionally, the secured TLLP Dropdown Credit Facility provides for total loan availability of $1.0 billion as of September 30, 2016. The primary use of proceeds under this facility will be to fund its asset acquisitions. The terms, covenants and restrictions under this facility are substantially the same as the secured TLLP Revolving Credit Facility. There was $400 million of borrowings outstanding under the TLLP Dropdown Credit Facility, resulting in a total unused loan availability of $600 million or 60% of the borrowing capacity, as of September 30, 2016. The weighted average interest rate for borrowings under the TLLP Dropdown Credit Facility was 2.54% at September 30, 2016.

The total aggregate available facility limits for the secured TLLP Revolving Credit Facility and the secured TLLP Dropdown Credit Facility totaled $1.6 billion at September 30, 2016. TLLP is allowed to request the loan availability for both the secured TLLP Revolving Credit Facility and the secured TLLP Dropdown Credit Facility be increased up to an aggregate of $2.1 billion, subject to receiving increased commitments from the lenders. The secured TLLP Revolving Credit Facility and the secured TLLP Dropdown Credit Facility ratably share collateral comprised primarily of TLLP property, plant, and equipment and both facilities mature on January 29, 2021. In addition, upon an upgrade of TLLP’s corporate family rating to investment grade from either Moody's Investors Service or S&P Global Ratings, certain covenants and restrictions under each facility will automatically and permanently be eliminated or improved.

TLLP SENIOR NOTES ISSUANCE. On May 9, 2016, TLLP completed a registered offering of $250 million aggregate principal amount of 6.125% Senior Notes due 2021 (“2021 Notes”) and $450 million aggregate principal amount of 6.375% Senior Notes due 2024 (“2024 Notes”). TLLP used the proceeds of the offering of the 2021 Notes to repay amounts then outstanding under the TLLP Dropdown Credit Facility and the proceeds of the offering of the 2024 Notes to repay amounts outstanding under the TLLP Revolving Credit Facility and for general partnership purposes.

The 2021 Notes were issued under the same indenture governing the existing $550 million of TLLP’s 6.125% Senior Notes due 2021 issued in August 2013 and have the same terms as those senior notes. The 2021 Notes have no sinking fund requirements. The 2021 Notes may be redeemed at premiums equal to 4.594% through October 15, 2017; 3.063% from October 15, 2017 through October 15, 2018; 1.531% from October 15, 2018 through October 15, 2019; and at par thereafter, plus accrued and unpaid interest. The 2021 Notes are unsecured and guaranteed by all of TLLP’s subsidiaries, except Tesoro Logistics Finance Corp., the co-issuer, and are non-recourse to Tesoro, except for TLGP, and contain customary terms, events of default and covenants for an issuance of non-investment grade securities.

The 2024 Notes have no sinking fund requirements. TLLP may redeem some or all of the 2024 Notes, prior to May 1, 2019, at a make-whole price plus accrued and unpaid interest, if any. On or after May 1, 2019, the 2024 Notes may be redeemed at premiums equal to 4.781% through May 1, 2020; 3.188% from May 1, 2020 through May 1, 2021; 1.594% from May 1, 2021 through May 1, 2022; and at par thereafter, plus accrued and unpaid interest. TLLP will have the right to redeem up to 35% of the aggregate principal amount at 106.375% of face value with proceeds from certain equity issuances through May 1, 2019. The 2024 Notes are unsecured and guaranteed by all of TLLP’s subsidiaries, except Tesoro Logistics Finance Corp., the co-issuer, and

September 30, 2016 | 15

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED)

are non-recourse to Tesoro, except for TLGP, and contain customary terms, events of default and covenants for an issuance of non-investment grade securities.

TLLP REPAYMENTS. On February 3, 2016, TLLP repaid the full amount of its unsecured term loan facility (“TLLP Unsecured Term Loan Facility”), including accrued interest, with proceeds drawn from the TLLP Dropdown Credit Facility. All commitments under the TLLP Unsecured Term Loan Facility were terminated effective with the repayment.

TLLP SENIOR NOTES EXCHANGE. On February 26, 2016, TLLP commenced an offer to exchange (the “Exchange”) its existing unregistered 5.50% Senior Notes due 2019 (“2019 Notes”) and 6.25% Senior Notes due 2022 (“2022 Notes”) (together, “Unregistered Notes”) for an equal principal amount of 5.50% Senior Notes due 2019 and 6.25% Senior Notes due 2022 (the “Exchange Notes”), respectively, that were registered under the Securities Act of 1933, as amended. On April 14, 2016, the Exchange was completed for all of the 2019 Notes and substantially all of the 2022 Notes. The terms of the Exchange Notes are identical in all material respects (including principal amount, interest rate, maturity and redemption rights) to the Unregistered Notes for which they were exchanged, except that the Exchange Notes generally are not subject to transfer restrictions. The Exchange fulfills all of the requirements of the registration rights agreements for the Unregistered Notes.

NOTE 8 – BENEFIT PLANS

Tesoro sponsors four defined benefit pension plans, including one funded qualified employee retirement plan and three unfunded nonqualified executive plans. Our funded employee retirement plan fully meets all funding requirements under applicable laws and regulations. We contributed $60 million to the retirement plan during the nine months ended September 30, 2016, to maintain the funded status of the plan. Tesoro also provides other postretirement health care benefits to retirees who met certain service requirements and were participating in our group health insurance program at retirement.

COMPONENTS OF PENSION AND OTHER POSTRETIREMENT BENEFIT EXPENSE (INCOME) (in millions)

	Pension Benefits
	Three Months Ended September 30,						Nine Months Ended September 30,
	2016			2015			2016			2015
Service cost	$	11		$	11		$	34		$	34
Interest cost	8			7			23			22
Expected return on plan assets	(6		)	(7		)	(20		)	(20		)
Amortization of prior service cost	—			1			—			1
Recognized net actuarial loss	4			6			14			18
Recognized curtailment loss and settlement cost	—			—			5			—
Net Periodic Benefit Expense	$	17		$	18		$	56		$	55
	Other Postretirement Benefits
	Three Months Ended September 30,						Nine Months Ended September 30,
	2016			2015			2016			2015
Service cost	$	—		$	—		$	2		$	2
Interest cost	1			1			2			2
Amortization of prior service credit	(8		)	(8		)	(26		)	(25		)
Recognized net actuarial loss	1			1			3			3
Net Periodic Benefit Income	$	(6	)	$	(6	)	$	(19	)	$	(18	)

16| Tesoro Corporation

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED)

NOTE 9 – COMMITMENTS AND CONTINGENCIES

ENVIRONMENTAL LIABILITIES

We are incurring and expect to continue to incur expenses for environmental remediation liabilities at a number of currently and previously owned or operated refining, pipeline, terminal and retail station properties. We have accrued liabilities for these expenses and believe these accruals are adequate based on current information and projections that can be reasonably estimated. Additionally, we have recognized environmental remediation liabilities assumed in past acquisitions from the prior owners that include amounts estimated for site cleanup and monitoring activities arising from operations at refineries, certain terminals and pipelines, and retail stations prior to the dates of our acquisitions. Our environmental accruals are based on estimates including engineering assessments, and it is possible that our projections will change and that additional costs will be recorded as more information becomes available.

Our accruals for environmental expenditures totaled $212 million and $255 million at September 30, 2016 and December 31, 2015, respectively, including $18 million and $33 million for TLLP, respectively. These accruals include $167 million and $192 million at September 30, 2016 and December 31, 2015, respectively, related to amounts estimated for site cleanup activities arising from operations at our Martinez refinery and operations of assets acquired from BP’s integrated Southern California refining, marketing and logistics business (“Los Angeles Acquisition”) prior to their respective acquisition dates. We cannot reasonably determine the full extent of remedial activities that may be required at the Martinez refinery and for assets acquired in the Los Angeles Acquisition and it is possible that we will identify additional investigation and remediation costs for site cleanup activities as more information becomes available. The environmental remediation liabilities assumed in the Los Angeles Acquisition include amounts estimated for site cleanup activities and monitoring activities arising from operations at the Carson refinery, certain terminals and pipelines, and retail stations prior to our acquisition on June 1, 2013. These estimates for environmental liabilities are based on third-party assessments and available information. Our estimates for site cleanup activities reflect amounts for which we are responsible under applicable cost-sharing arrangements.

On October 17, 2016, the appellate court affirmed the July 10, 2015 order issued by the federal trial court denying coverage pursuant to an insurance policy for environmental remediation liabilities at our Martinez refinery. The insurer had filed a declaratory relief action challenging coverage of the primary policy assigned to us when we acquired the refinery. The primary and excess policies together provided for coverage up to $190 million for expenditures in excess of $50 million in self–insurance. The court's decision effectively denies coverage under both policies. While these environmental remediation liabilities are included in our accruals above, we have not recognized possible insurance recoveries under the policies. We are currently evaluating whether to pursue further challenging the decision.

OTHER CONTINGENCIES

On September 29, 2016, the U.S. Court for the Western District of Texas entered the Consent Decree in final settlement of EPA’s allegations that we violated certain Clean Air Act regulations at our Alaska, Washington, Martinez, North Dakota and Utah refineries. The settlement also resolves similar allegations relating to our former Hawaii refinery, which we sold in September 2013, and we have recognized $46 million as expense associated with discontinued operations prior to 2016 specifically related to the projects required at our former Hawaii refinery. The terms of the Consent Decree require Tesoro to make material capital expenditures. Prior to 2016 and for the nine months ended September 30, 2016, we have capitalized approximately $211 million and $55 million, respectively, for capital projects to satisfy requirements of the Consent Decree, including amounts capitalized for interest and labor. These expenditures have not been material to our financial position or liquidity in any previous year. The remaining capital expenditures will be primarily spent in 2016 and 2017 with additional amounts through 2019. The Consent Decree imposes a fine, which was previously accrued, paid in October and was not material to our financial statements, and certain funding of community projects that will be expensed as incurred in future periods. The remaining expenditures associated with the Consent Decree will not have a material impact on our liquidity, financial position or results of operations.

September 30, 2016 | 17

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED)

OTHER MATTERS

In the ordinary course of business, we become party to lawsuits, administrative proceedings and governmental investigations, including environmental, regulatory and other matters. Large, and sometimes unspecified, damages or penalties may be sought from us in some matters. We have not established accruals for these types of matters unless a loss is probable, and the amount of loss is currently estimable.

ENVIRONMENTAL. On October 26, 2016, the Utah Supreme Court rejected the Utah Physicians for a Healthy Environment’s and the Utah Chapter of the Sierra Club’s (“Petitioners”) challenge of an air permit issued by the Utah Department of Environmental Quality (“UDEQ”) to our Salt Lake City refinery in September 2012. Petitioners had filed a Request for Agency Action (the “Request”) with UDEQ challenging UDEQ’s permitting of our refinery conversion project alleging that the permit does not conform to the requirements of the Clean Air Act. After proceedings before an administrative law judge and the Executive Director of UDEQ’s subsequent dismissal of Petitioners’ Request, Petitioners filed a petition for review with the Utah Court of Appeals in December 2014, and the Court of Appeals certified the case to the Utah Supreme Court. While Petitioners have until November 9, 2016 to file a challenge to the Utah Supreme Court’s decision, we do not believe the final resolution of this matter will have a material adverse impact on our liquidity, financial position, or results of operations.

TAX.We are subject to extensive federal, state and foreign tax laws and regulations. Newly enacted tax laws and regulations, and changes in existing tax laws and regulations, could result in increased expenditures in the future. We are also subject to audits by federal, state and foreign taxing authorities in the normal course of business. It is possible that tax audits could result in claims against us in excess of recorded liabilities. However, we believe that resolution of any such claim(s) would not have a material impact on our liquidity, financial position or results of operations.

Upon a transfer of assets to TLLP, Tesoro historically has received a distribution of cash from partnership debt used to finance the transaction. This distribution has historically been treated as non-taxable loan proceeds to the extent of Tesoro’s 100% indemnity of such loan. New Federal Income Tax Regulations in effect for leveraged partnership transactions occurring on or after January 3, 2017, will reduce the amount treated as non-taxable loan proceeds to that portion equal to Tesoro’s partnership profit sharing ratio in TLLP. This could result in a taxable gain being recognized by Tesoro in a period when no such gain is recognized in the financial statements, causing an increase in the current portion of income tax expense.

NOTE 10 – STOCKHOLDERS’ EQUITY AND EARNINGS PER SHARE

CHANGES TO EQUITY (in millions)

	Tesoro Corporation Stockholders’ Equity			Noncontrolling  Interest			Total Equity
Balance at December 31, 2015 (a)	$	5,213		$	2,527		$	7,740
Net earnings	656			103			759
Purchases of common stock	(242		)	—			(242		)
Dividend payments	(186		)	—			(186		)
Net effect of amounts related to equity-based compensation (b)	33			3			36
Effect of deconsolidation of RGS (c)	(2		)	(84		)	(86		)
Taxes paid related to net share settlement of equity awards	(25		)	—			(25		)
Net proceeds from issuance of Tesoro Logistics LP common units (d)	(2		)	366			364
Distributions to noncontrolling interest	—			(155		)	(155		)
Pension liability adjustment, net of tax	10			—			10
Transfers to (from) Tesoro paid-in capital related to:
TLLP’s issuance of common units	44			(72		)	(28		)
Other	1			7			8
Balance at September 30, 2016 (a)	$	5,500		$	2,695		$	8,195

(a) We have 5.0 million shares of preferred stock authorized with no par value per share. No shares of preferred stock were outstanding as of September 30, 2016 and December 31, 2015.

18| Tesoro Corporation

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED)

(b) We issued less than 0.1 million and approximately 0.3 million shares during the nine months ended September 30, 2016 and 2015, respectively, for proceeds of $2 million and $12 million, respectively, primarily for stock option exercises under our equity-based compensation plans. See Note 11 for more information on stock-based compensation.

(c) As a result of the reassessment performed in conjunction with the adoption of ASU 2015-02, we deconsolidated RGS, causing the derecognition of noncontrolling interest for the reporting of RGS as an equity method investment.

(d) Includes the closing of TLLP’s registered public offering of 6,325,000 common units representing limited partner interests at a public offering price of $47.13 per unit on June 10, 2016 as well as common units issued under TLLP’s continuous offering program during the nine months ended September 30, 2016.

EARNINGS PER SHARE

We compute basic earnings per share by dividing net earnings attributable to Tesoro Corporation stockholders by the weighted average number of common shares outstanding during the period. Diluted earnings per share include the effects of potentially dilutive shares outstanding during the period.

SHARES OUTSTANDING (in millions)

	Three Months Ended September 30,		Nine Months Ended September 30,
	2016	2015	2016	2015
Weighted average common shares outstanding	118.2	122.5	119.1	124.3
Common stock equivalents	1.1	1.3	1.3	1.4
Total Diluted Shares	119.3	123.8	120.4	125.7

Potentially dilutive common stock equivalents are excluded from the calculation of diluted earnings per share if the effect of including such securities in the calculation would have been anti-dilutive. Anti-dilutive securities were 0.4 million and 0.1 million for the three months ended September 30, 2016 and 2015, respectively, and 0.3 million and 0.6 million for the nine months ended September 30, 2016 and 2015, respectively.

SHARE REPURCHASES

We are authorized by our Board of Directors (the “Board”) to purchase shares of our common stock in open market transactions at our discretion. The Board’s authorization has no time limit and may be suspended or discontinued at any time. Purchases of our common stock can also be made to offset the dilutive effect of stock-based compensation awards and to meet our obligations under employee benefit and compensation plans, including the exercise of stock options and vesting of restricted stock and to fulfill other stock compensation requirements. During the nine months ended September 30, 2016 and 2015, we executed approximately 3.2 million and 5.5 million of share repurchases of our common stock for approximately $250 million and $494 million, respectively.

CASH DIVIDENDS

We paid cash dividends totaling $65 million and $186 million for the three and nine months ended September 30, 2016, respectively, based on a $0.55 per share and $0.50 per share quarterly cash dividend on common stock in the third and first two quarters, respectively. We paid cash dividends totaling $62 million and $169 million for the three and nine months ended September 30, 2015, respectively, based on a $0.50 per share and $0.425 per share quarterly cash dividend on common stock in the third and first two quarters, respectively. On October 31, 2016, our Board declared a cash dividend of $0.55 per share payable on December 15, 2016 to shareholders of record on November 30, 2016.

September 30, 2016 | 19

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED)

NOTE 11 – STOCK-BASED COMPENSATION

STOCK-BASED COMPENSATION EXPENSE (BENEFIT) (in millions)

	Three Months Ended September 30,				Nine Months Ended September 30,
	2016		2015		2016			2015
Stock appreciation rights (a)	$	1	$	10	$	(14	)	$	20
Performance share awards (b)	3		3		7			9
Market stock units (c)	7		7		21			19
Other stock-based awards (d)	2		2		7			9
Total Stock-Based Compensation Expense	$	13	$	22	$	21		$	57

(a) We had $6 millionand $41 million recorded in other current liabilities associated with our stock appreciation rights (“SARs”) awards at September 30, 2016 and December 31, 2015, respectively. We paid cash of $21 million to settle 0.3 million SARs that were exercised during the nine months ended September 30, 2016 and $37 million to settle 0.5 million SARs that were exercised during the nine months ended September 30, 2015.

(b) We granted 0.1 million market condition performance share awards at a weighted average grant date fair value of $87.90 per share under the amended and restated 2011 Long-Term Incentive Plan (“2011 Plan”) during the nine months ended September 30, 2016.

(c) We granted 0.3 million market stock units at a weighted average grant date fair value of $84.84 per unit under the 2011 Plan during the nine months ended September 30, 2016.

(d) We have aggregated expenses for certain award types as they are not considered significant.

The income tax effect recognized in the income statement for stock-based compensation was a benefit of $5 million and $8 million for the three months ended September 30, 2016 and 2015, respectively, and a benefit of $23 million and $22 million for the nine months ended September 30, 2016 and 2015, respectively. Included in the tax benefit of $23 million for the nine months ended September 30, 2016, was $16 million of tax benefit attributable to excess tax benefits from exercises and vestings that occurred during the period, the effects of which were recorded to the income statement pursuant to ASU 2016-09. There was no tax benefit attributable to excess tax benefits from exercises and vestings for the three months ended September 30, 2016. The reduction in current taxes payable recognized from tax deductions resulting from exercises and vestings under all of our stock-based compensation arrangements totaled $1 million and $8 million for the three months ended September 30, 2016 and 2015, respectively, and $37 million and $71 million for the nine months ended September 30, 2016 and 2015, respectively.

NOTE 12 – OPERATING SEGMENTS

Our refining segment owns and operates seven petroleum refineries located in California, Washington, Alaska, North Dakota and Utah that manufacture gasoline and gasoline blendstocks, jet fuel, diesel fuel, residual fuel oil and other refined products. We sell these refined products, together with refined products purchased from third parties, to our marketing segment through terminal facilities and other locations and opportunistically export refined products to foreign markets. TLLP’s assets and operations include certain crude oil gathering assets, natural gas gathering and processing assets and crude oil and refined products terminalling and transportation assets acquired from Tesoro and other third parties. Revenues from the TLLP segment are generated by charging fees for gathering crude oil and natural gas, for processing natural gas, and for terminalling, transporting and storing crude oil, and refined products. Tesoro’s marketing business supplies gasoline and diesel across 16 states through both branded and unbranded marketing channels. We utilize various operating models in the operation of our retail stations. Since we do not have significant operations in foreign countries, revenue generated and long-lived assets located in foreign countries are not material to our operations.

We evaluate the performance of our segments based primarily on segment operating income. Segment operating income includes those revenues and expenses that are directly attributable to management of the respective segment. TLLP and marketing revenues include intersegment transactions with our refining segment. Corporate depreciation and corporate general and administrative expenses are excluded from segment operating income.

TLLP acquired certain assets from our Refining segment, and the associated liabilities and results of operations are collectively referred to as the “Predecessors.” The accompanying segment information presents certain financial information of the Predecessors at historical cost. The financial statements of the 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 the Predecessors had been operated as a stand-alone business. The Predecessors did not record revenue for transactions with our Refining segment.

20| Tesoro Corporation

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED)

SEGMENT INFORMATION RELATED TO CONTINUING OPERATIONS

	Three Months Ended September 30,						Nine Months Ended September 30,
	2016			2015			2016			2015
	(In millions)
Revenues
Refining:
Refined products	$	5,641		$	6,817		$	15,434		$	19,867
Crude oil resales and other	257			172			710			780
TLLP:
Gathering	82			87			255			253
Processing	69			71			208			205
Terminalling and transportation	157			124			438			362
Marketing:
Fuel (a)	4,118			5,144			11,493			14,143
Other non-fuel	23			16			65			48
Intersegment sales	(3,803		)	(4,688		)	(10,673		)	(13,220		)
Total Revenues	$	6,544		$	7,743		$	17,930		$	22,438
Segment Operating Income
Refining (b)	$	52		$	899		$	475		$	1,843
TLLP (b) (c)	133			106			381			312
Marketing	273			379			661			724
Total Segment Operating Income	458			1,384			1,517			2,879
Corporate and unallocated costs (c)	(98		)	(92		)	(260		)	(238		)
Operating Income	360			1,292			1,257			2,641
Interest and financing costs, net	(70		)	(54		)	(190		)	(163		)
Equity in earnings of equity method investments	7			6			12			9
Other income, net	—			13			32			12
Earnings Before Income Taxes	$	297		$	1,257		$	1,111		$	2,499
Depreciation and Amortization Expenses
Refining	$	148		$	133		$	445		$	373
TLLP	45			45			134			133
Marketing	12			11			36			34
Corporate	6			3			18			13
Total Depreciation and Amortization Expenses	$	211		$	192		$	633		$	553
Capital Expenditures
Refining	$	153		$	152		$	409		$	483
TLLP	42			93			125			237
Marketing	3			8			22			20
Corporate	29			6			68			16
Total Capital Expenditures	$	227		$	259		$	624		$	756

(a) Federal and state motor fuel excise taxes on sales by our marketing segment at retail sites where we own the inventory are included in both revenues and cost of sales in our condensed statements of consolidated operations. These taxes totaled $146 million and $137 million for the three months ended September 30, 2016 and 2015, respectively, and $436 million and $423 million for the nine months ended September 30, 2016 and 2015, respectively.

(b) Adjusted for the historical results of the Predecessors.

(c) We present TLLP’s segment operating income net of general and administrative expenses totaling $12 million and $16 million representing TLLP’s corporate costs for the three months ended September 30, 2016 and 2015, respectively, and $37 million and $43 million for the nine months ended September 30, 2016 and 2015, respectively, which are not allocated by TLLP to its operating segments.

September 30, 2016 | 21

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED)

NOTE 13 – CONDENSED CONSOLIDATING FINANCIAL INFORMATION

Separate condensed consolidating financial information of Tesoro Corporation (the “Parent”), subsidiary guarantors and non-guarantors is presented below. At September 30, 2016, Tesoro and certain subsidiary guarantors have fully and unconditionally guaranteed our 4.250% Senior Notes due 2017, 5.375% Senior Notes due 2022, and 5.125% Senior Notes due 2024. TLLP, in which we had a 34% ownership interest as of September 30, 2016, and other subsidiaries have not guaranteed these obligations. As a result of these guarantee arrangements, we are required to present the following condensed consolidating financial information, which should be read in conjunction with the accompanying condensed consolidated financial statements and notes thereto. This information is provided as an alternative to providing separate financial statements for guarantor subsidiaries. Separate financial statements of Tesoro’s subsidiary guarantors are not included because the guarantees are full and unconditional and these subsidiary guarantors are 100% owned and are jointly and severally liable for Tesoro’s outstanding senior notes. The information is presented using the equity method of accounting for investments in subsidiaries. Certain intercompany and intracompany transactions between subsidiaries are presented gross and eliminated in the consolidating adjustments column. Additionally, the results of operations of the Hawaii Business have been reported as discontinued operations in these condensed consolidating statements of operations and comprehensive income for the three and nine months ended September 30, 2016 and September 30, 2015.

CONDENSED CONSOLIDATING STATEMENT OF OPERATIONS

FOR THE THREE MONTHS ENDEDSEPTEMBER 30, 2016

(In millions)

	Parent			Guarantor Subsidiaries			Non- Guarantors			Consolidating Adjustments			Consolidated
Revenues	$	—		$	7,136		$	850		$	(1,442	)	$	6,544
Costs and Expenses
Cost of sales (excluding the lower of cost or market inventory valuation adjustment)	—			6,059			533			(1,360		)	5,232
Lower of cost or market inventory valuation adjustment	—			(20		)	—			—			(20		)
Operating, selling, general and administrative expenses	2			696			143			(82		)	759
Depreciation and amortization expenses	—			165			46			—			211
Loss on asset disposals and impairments	—			1			1			—			2
Operating Income (Loss)	(2		)	235			127			—			360
Interest and financing costs, net	(16		)	(20		)	(34		)	—			(70		)
Equity in earnings of subsidiaries	185			43			—			(228		)	—
Equity in earnings of equity method investments	—			4			3			—			7
Other income (expense), net	(1		)	1			—			—			—
Earnings Before Income Taxes	166			263			96			(228		)	297
Income tax expense (benefit) (a)	(4		)	75			24			—			95
Net Earnings from Continuing Operations	170			188			72			(228		)	202
Loss from discontinued operations, net of tax	(1		)	—			—			—			(1		)
Net Earnings	169			188			72			(228		)	201
Less: Net earnings from continuing operations attributable to noncontrolling interest	—			—			32			—			32
Net Earnings Attributable to Tesoro Corporation	$	169		$	188		$	40		$	(228	)	$	169
Comprehensive Income
Total comprehensive income	$	169		$	188		$	72		$	(228	)	$	201
Less: Noncontrolling interest in comprehensive income	—			—			32			—			32
Comprehensive Income Attributable to Tesoro Corporation	$	169		$	188		$	40		$	(228	)	$	169

(a) The income tax expense (benefit) reflected in each column does not include any tax effect of the equity in earnings from corporate subsidiaries, but does include the tax effect of the corporate partners’ share of partnership income.

22| Tesoro Corporation

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED)

CONDENSED CONSOLIDATING STATEMENT OF OPERATIONS

FOR THE THREE MONTHS ENDEDSEPTEMBER 30, 2015

(In millions)

	Parent			Guarantor Subsidiaries			Non- Guarantors			Consolidating Adjustments			Consolidated
Revenues	$	—		$	8,574		$	1,054		$	(1,885	)	$	7,743
Costs and Expenses
Cost of sales (excluding the lower of cost or market inventory valuation adjustment)	—			6,491			748			(1,810		)	5,429
Lower of cost or market inventory valuation adjustment	—			83			—			—			83
Operating, selling, general and administrative expenses	2			674			142			(75		)	743
Depreciation and amortization expenses	—			146			46			—			192
Loss on asset disposals and impairments	—			4			—			—			4
Operating Income (Loss)	(2		)	1,176			118			—			1,292
Interest and financing costs, net	(11		)	(17		)	(26		)	—			(54		)
Equity in earnings of subsidiaries	776			32			—			(808		)	—
Equity in earnings of equity method investments	—			4			2			—			6
Other income, net	—			13			—			—			13
Earnings Before Income Taxes	763			1,208			94			(808		)	1,257
Income tax expense (a)	4			445			9			—			458
Net Earnings	759			763			85			(808		)	799
Less: Net earnings from continuing operations attributable to noncontrolling interest	—			—			40			—			40
Net Earnings Attributable to Tesoro Corporation	$	759		$	763		$	45		$	(808	)	$	759
Comprehensive Income
Total comprehensive income	$	759		$	763		$	85		$	(808	)	$	799
Less: Noncontrolling interest in comprehensive income	—			—			40			—			40
Comprehensive Income Attributable to Tesoro Corporation	$	759		$	763		$	45		$	(808	)	$	759

(a) The income tax expense reflected in each column does not include any tax effect of the equity in earnings from corporate subsidiaries, but does include the tax effect of the corporate partners’ share of partnership income.

September 30, 2016 | 23

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED)

CONDENSED CONSOLIDATING STATEMENT OF OPERATIONS

FOR THE NINE MONTHS ENDEDSEPTEMBER 30, 2016

(In millions)

	Parent			Guarantor Subsidiaries			Non- Guarantors			Consolidating Adjustments			Consolidated
Revenues	$	—		$	19,664		$	2,401		$	(4,135	)	$	17,930
Costs and Expenses
Cost of sales (excluding the lower of cost or market inventory valuation adjustment)	—			16,479			1,528			(3,893		)	14,114
Lower of cost or market inventory valuation adjustment	—			(237		)	1			—			(236		)
Operating, selling, general and administrative expenses	6			1,986			405			(242		)	2,155
Depreciation and amortization expenses	—			495			138			—			633
Loss on asset disposals and impairments	—			4			3			—			7
Operating Income (Loss)	(6		)	937			326			—			1,257
Interest and financing costs, net	(43		)	(52		)	(95		)	—			(190		)
Equity in earnings of subsidiaries	686			146			—			(832		)	—
Equity in earnings of equity method investments	—			2			10			—			12
Other income, net	1			25			6			—			32
Earnings Before Income Taxes	638			1,058			247			(832		)	1,111
Income tax expense (benefit) (a)	(8		)	330			40			—			362
Net Earnings from Continuing Operations	646			728			207			(832		)	749
Earnings from discontinued operations, net of tax	10			—			—			—			10
Net Earnings	656			728			207			(832		)	759
Less: Net earnings from continuing operations attributable to noncontrolling interest	—			—			103			—			103
Net Earnings Attributable to Tesoro Corporation	$	656		$	728		$	104		$	(832	)	$	656
Comprehensive Income
Total comprehensive income	$	646		$	728		$	207		$	(832	)	$	749
Less: Noncontrolling interest in comprehensive income	—			—			103			—			103
Comprehensive Income Attributable to Tesoro Corporation	$	646		$	728		$	104		$	(832	)	$	646

(a) The income tax expense (benefit) reflected in each column does not include any tax effect of the equity in earnings from corporate subsidiaries, but does include the tax effect of the corporate partners’ share of partnership income.

24| Tesoro Corporation

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED)

CONDENSED CONSOLIDATING STATEMENT OF OPERATIONS

FOR THE NINE MONTHS ENDEDSEPTEMBER 30, 2015

(In millions)

	Parent			Guarantor Subsidiaries			Non- Guarantors			Consolidating Adjustments			Consolidated
Revenues	$	—		$	24,573		$	2,718		$	(4,853	)	$	22,438
Costs and Expenses
Cost of sales (excluding the lower of cost or market inventory valuation adjustment)	—			19,862			1,874			(4,646		)	17,090
Lower of cost or market inventory valuation adjustment	—			41			—			—			41
Operating, selling, general and administrative expenses	8			1,889			411			(207		)	2,101
Depreciation and amortization expenses	—			416			137			—			553
Loss on asset disposals and impairments	—			12			—			—			12
Operating Income (Loss)	(8		)	2,353			296			—			2,641
Interest and financing costs, net	(32		)	(52		)	(79		)	—			(163		)
Equity in earnings of subsidiaries	1,527			85			—			(1,612		)	—
Equity in earnings of equity method investments	—			3			6			—			9
Other income, net	1			11			—			—			12
Earnings Before Income Taxes	1,488			2,400			223			(1,612		)	2,499
Income tax expense (benefit) (a)	(2		)	870			20			—			888
Net Earnings from Continuing Operations	1,490			1,530			203			(1,612		)	1,611
Loss from discontinued operations, net of tax	(4		)	—			—			—			(4		)
Net Earnings	1,486			1,530			203			(1,612		)	1,607
Less: Net earnings from continuing operations attributable to noncontrolling interest	—			—			121			—			121
Net Earnings Attributable to Tesoro Corporation	$	1,486		$	1,530		$	82		$	(1,612	)	$	1,486
Comprehensive Income
Total comprehensive income	$	1,486		$	1,530		$	203		$	(1,612	)	$	1,607
Less: Noncontrolling interest in comprehensive income	—			—			121			—			121
Comprehensive Income Attributable to Tesoro Corporation	$	1,486		$	1,530		$	82		$	(1,612	)	$	1,486

(a) The income tax expense (benefit) reflected in each column does not include any tax effect of the equity in earnings from corporate subsidiaries, but does include the tax effect of the corporate partners’ share of partnership income.

September 30, 2016 | 25

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED)

CONDENSED CONSOLIDATING BALANCE SHEET

AS OF SEPTEMBER 30, 2016

(In millions)

	Parent		Guarantor Subsidiaries		Non- Guarantors		Consolidating Adjustments			Consolidated
ASSETS
Current Assets
Cash and cash equivalents	$	—	$	846	$	541	$	—		$	1,387
Receivables, net of allowance for doubtful accounts	7		844		186		—			1,037
Short-term receivables from affiliates	—		66		17		(83		)	—
Inventories, net	—		2,136		181		—			2,317
Prepayments and other current assets	47		277		40		—			364
Total Current Assets	54		4,169		965		(83		)	5,105
Property, Plant and Equipment, Net	—		6,498		3,271		—			9,769
Investment in Subsidiaries	9,125		619		—		(9,744		)	—
Long-Term Receivables from Affiliates	1,454		—		—		(1,454		)	—
Long-Term Intercompany Note Receivable	—		—		2,026		(2,026		)	—
Acquired Intangibles, Net	—		316		971		—			1,287
Other Noncurrent Assets, Net	46		1,301		502		(5		)	1,844
Total Assets	$	10,679	$	12,903	$	7,735	$	(13,312	)	$	18,005
LIABILITIES AND EQUITY
Current Liabilities
Accounts payable	$	1	$	1,393	$	153	$	—		$	1,547
Short-term payables to affiliates	—		17		66		(83		)	—
Other current liabilities	125		860		161		—			1,146
Total Current Liabilities	126		2,270		380		(83		)	2,693
Long-Term Payables to Affiliates	—		1,223		231		(1,454		)	—
Deferred Income Taxes	1,443		—		—		(5		)	1,438
Debt, Net of Unamortized Issuance Costs	1,189		39		3,439		—			4,667
Other Noncurrent Liabilities	395		568		49		—			1,012
Long-Term Intercompany Note Payable	2,026		—		—		(2,026		)	—
Equity-Tesoro Corporation	5,500		8,803		941		(9,744		)	5,500
Equity-Noncontrolling Interest	—		—		2,695		—			2,695
Total Liabilities and Equity	$	10,679	$	12,903	$	7,735	$	(13,312	)	$	18,005

26| Tesoro Corporation

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED)

CONDENSED CONSOLIDATING BALANCE SHEET

AS OF DECEMBER 31, 2015

(In millions)

	Parent		Guarantor Subsidiaries		Non- Guarantors		Consolidating Adjustments			Consolidated
ASSETS
Current Assets
Cash and cash equivalents	$	—	$	895	$	47	$	—		$	942
Receivables, net of allowance for doubtful accounts	—		626		166		—			792
Short-term receivables from affiliates	—		197		—		(197		)	—
Inventories, net	—		1,971		331		—			2,302
Prepayments and other current assets	116		140		16		(1		)	271
Total Current Assets	116		3,829		560		(198		)	4,307
Property, Plant and Equipment, Net	—		6,010		3,531		—			9,541
Investment in Subsidiaries	8,133		509		—		(8,642		)	—
Long-Term Receivables from Affiliates	1,517		—		—		(1,517		)	—
Long-Term Intercompany Note Receivable	—		—		1,626		(1,626		)	—
Acquired Intangibles, Net	—		234		977		—			1,211
Other Noncurrent Assets, Net	33		1,026		219		(5		)	1,273
Total Assets	$	9,799	$	11,608	$	6,913	$	(11,988	)	$	16,332
LIABILITIES AND EQUITY
Current Liabilities
Accounts payable	$	—	$	1,412	$	156	$	—		$	1,568
Short-term payables to affiliates	—		—		197		(197		)	—
Other current liabilities	91		773		99		(1		)	962
Total Current Liabilities	91		2,185		452		(198		)	2,530
Long-Term Payables to Affiliates	—		1,375		142		(1,517		)	—
Deferred Income Taxes	1,227		—		—		(5		)	1,222
Debt, Net of Unamortized Issuance Costs	1,190		33		2,844		—			4,067
Other Noncurrent Liabilities	452		271		50		—			773
Long-Term Intercompany Note Payable	1,626		—		—		(1,626		)	—
Equity-Tesoro Corporation	5,213		7,744		898		(8,642		)	5,213
Equity-Noncontrolling Interest	—		—		2,527		—			2,527
Total Liabilities and Equity	$	9,799	$	11,608	$	6,913	$	(11,988	)	$	16,332

September 30, 2016 | 27

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED)

CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS

FOR THE NINE MONTHS ENDEDSEPTEMBER 30, 2016

(In millions)

	Parent			Guarantor Subsidiaries			Non- Guarantors			Consolidating Adjustments			Consolidated
Cash Flows From (Used In) Operating Activities
Net cash from (used in) operating activities	$	(20	)	$	687		$	534		$	—		$	1,201
Cash Flows From (Used In) Investing Activities
Capital expenditures	—			(484		)	(139		)	—			(623		)
Acquisition, net of cash	—			(360		)	(52		)	—			(412		)
Proceeds from asset sales	17			1			—			—			18
Intercompany notes, net	349			—			—			(349		)	—
Notes to General Partner	—			—			(400		)	400			—
Investment in subsidiaries	(319		)	(106		)	—			425			—
Other investing activities	—			—			(3		)	—			(3		)
Net cash from (used in) investing activities	47			(949		)	(594		)	476			(1,020		)
Cash Flows From (Used In) Financing Activities
Borrowings under revolving credit agreements	—			—			761			—			761
Repayments on revolving credit agreements	—			—			(666		)	—			(666		)
Proceeds from debt offering	—			—			701			—			701
Repayments of debt	—			(6		)	(252		)	—			(258		)
Dividend payments	(186		)	—			—			—			(186		)
Net proceeds from issuance of Tesoro Logistics LP common units	—			—			364			—			364
Notes from General Partner	400			—			—			(400		)	—
Distributions to noncontrolling interest	—			—			(155		)	—			(155		)
Purchases of common stock	(242		)	—			—			—			(242		)
Taxes paid related to net share settlement of equity awards	(25		)	—			—			—			(25		)
Net intercompany repayments	—			(117		)	(232		)	349			—
Contribution by parent	—			319			106			(425		)	—
Distributions to TLLP unitholders and general partner	38			17			(55		)	—			—
Other financing activities	(12		)	—			(18		)	—			(30		)
Net cash from (used in) financing activities	(27		)	213			554			(476		)	264
Increase (Decrease) in Cash And Cash Equivalents	—			(49		)	494			—			445
Cash and Cash Equivalents, Beginning of Period	—			895			47			—			942
Cash and Cash Equivalents, End of Period	$	—		$	846		$	541		$	—		$	1,387

28| Tesoro Corporation

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED)

CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS

FOR THE NINE MONTHS ENDEDSEPTEMBER 30, 2015

(In millions)

	Parent			Guarantor Subsidiaries			Non- Guarantors			Consolidating Adjustments			Consolidated
Cash Flows From (Used In) Operating Activities
Net cash from (used in) operating activities	$	(16	)	$	1,481		$	382		$	—		$	1,847
Cash Flows From (Used In) Investing Activities
Capital expenditures	—			(527		)	(246		)	—			(773		)
Acquisitions	—			—			(6		)	—			(6		)
Intercompany notes, net	1,077			—			—			(1,077		)	—
Other investing activities	—			(4		)	—			—			(4		)
Net cash from (used in) investing activities	1,077			(531		)	(252		)	(1,077		)	(783		)
Cash Flows From (Used In) Financing Activities
Borrowings under revolving credit agreements	—			—			346			—			346
Repayments on revolving credit agreements	—			—			(326		)	—			(326		)
Repayments of debt	(398		)	(4		)	—			—			(402		)
Dividend payments	(169		)	—			—			—			(169		)
Net proceeds from issuance of Tesoro Logistics LP common units	—			—			71			—			71
Distributions to noncontrolling interest	—			—			(135		)	—			(135		)
Purchases of common stock	(494		)	—			—			—			(494		)
Taxes paid related to net share settlement of equity awards	(45		)	—			—			—			(45		)
Net intercompany repayments	—			(998		)	(79		)	1,077			—
Distributions to TLLP unitholders and general partner	33			(2		)	(31		)	—			—
Other financing activities	12			37			—			—			49
Net cash used in financing activities	(1,061		)	(967		)	(154		)	1,077			(1,105		)
Decrease in Cash And Cash Equivalents	—			(17		)	(24		)	—			(41		)
Cash and Cash Equivalents, Beginning of Period	—			943			57			—			1,000
Cash and Cash Equivalents, End of Period	$	—		$	926		$	33		$	—		$	959

September 30, 2016 | 29

MANAGEMENT’S DISCUSSION AND ANALYSIS

ITEM 2. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

Those statements in this section that are not historical in nature should be deemed forward-looking statements that are inherently uncertain. See “Important Information Regarding Forward-Looking Statements” section for a discussion of the factors that could cause actual results to differ materially from those projected in these statements. This section should be read in conjunction with Management’s Discussion and Analysis of Financial Condition and Results of Operations in our Annual Report on Form 10-K for the year ended December 31, 2015.

BUSINESS STRATEGY AND OVERVIEW

STRATEGY AND GOALS

As the leading integrated refining, marketing, and logistics company in our strategic foot print, we are driven to create value. We underpin our approach to our value creation by driving business improvements and an enduring commitment to execution. Across all of our businesses, we seek to leverage a highly integrated business model to achieve our vision through the following strategic priorities:

• OPERATIONAL EFFICIENCY AND EFFECTIVENESS. Continuously improving safety, compliance, reliability, system improvements and cost leadership;

• VALUE CHAIN OPTIMIZATION. Enhancing margin capture through our supply and trading activities, optimization of our integrated businesses and customer focus;

• FINANCIAL DISCIPLINE. Maintaining a strong financial position by exercising capital discipline and focusing on a balanced use of free cash flow;

• VALUE-DRIVEN GROWTH. Extending our capabilities and growing earnings through growth in our logistics and marketing businesses and other strategic opportunities accretive to shareholder value; and

• HIGH PERFORMING CULTURE. Fostering a performance-based culture that is committed to building leadership at all levels of the organization and across our value chain with employees from diverse backgrounds and experiences who are accountable for delivering on our commitments.

We take a principle-based approach to conducting our business seeking to create shared value for key stakeholders such as employees, communities, business partners, government, and the environment. We believe our value chain creates a competitive advantage by maximizing business integration across our different regions through the combination of refining, marketing and logistics assets. Our marketing assets provide a secure and ratable offtake of high value gasoline and diesel production from our refineries. Our logistics assets and in-region placement allow us to minimize transportation costs and maximize our overall performance. Our waterborne and land-based logistics assets enable system optimization across our businesses and between our regions. Tesoro Logistics LP’s (“TLLP”) gathering logistics assets also allow us to capture integrated crude oil and natural gas commercial opportunities in the mid-continent basins.

30| Tesoro Corporation

MANAGEMENT’S DISCUSSION AND ANALYSIS

Our goals were focused on these strategic priorities and, thus far, we have accomplished the following in 2016:

	Operational Efficiency & Effectiveness	Value Chain Optimization	Financial Discipline	Value Driven Growth	High Performing Culture
Completed the acquisition of crude oil pipeline and gathering system as well as transportation, storage and rail loading facilities in the Williston Basin		•	•	•
Completed the acquisition of refined product terminals, truck racks, storage and rail loading facilities in Alaska along with wholesale fuel marketing contracts		•	•	•
Completed the acquisition of Dakota Prairie Refining, including its refinery (“Dickinson Refinery”) with crude oil capacity of 20 thousand barrels per day (“Mbpd”) and produces ultra-low sulfur diesel, naphtha and atmospheric residuals		•	•	•
TLLP amended its credit agreement and entered into a new dropdown credit facility providing additional resources for organic expansion opportunities and strategic acquisitions			•
TLLP completed a registered senior notes offering using a portion of the proceeds to repay amounts then borrowed on its credit facilities			•
Anacortes refinery achieved one year of operations without an OSHA recordable injury and received the Elite Silver Award from AFPM as part of their Distinguished Safety Awards process	•				•
TLLP’s Colton Clean Products fleet reached 10 years and 8 million miles without an on-road preventable accident	•				•
TLLP completed its acquisition of the Alaska Storage and Terminalling Assets from Tesoro for a purchase price of $444 million of which the first phase for $266 million closed on July 1, 2016 and the second phase for $178 million closed on September 16, 2016		•	•	•
Tesoro acquired Virent, Inc., an innovative renewable fuels and chemicals company that supports Tesoro’s renewable fuels strategy of developing high-quality, lower carbon, renewable feedstocks and blendstocks that can either be co-processed in existing refineries or blended seamlessly with traditional fuels		•	•	•	•
Tesoro entered into a new senior revolving credit agreement replacing the previous $3.0 billion asset based credit facility, which provides for total available revolving capacity of $2.0 billion not subject to borrowing base redeterminations, becomes unsecured if investment grade credit rating is achieved, and matures in September 2020			•

September 30, 2016 | 31

MANAGEMENT’S DISCUSSION AND ANALYSIS

BUSINESS IMPROVEMENT OBJECTIVES

Tesoro has a proven track record of delivering on our commitments by focusing on our strategic priorities, business improvement efforts and growth in our logistics and marketing businesses. Our plans, as presented in December 2015, are to deliver an additional $400 to $500 million of annual improvements to operating income during 2016. Underlying these estimates were our assumptions relating to, among other things, the refining margin environment in 2016, related crude oil differentials and marketing fuel margins. At that time, our projected improvements included $200 to $250 million in Refining, $175 to $200 million in Logistics and $25 to $50 million in Marketing reflecting improvements that were anticipated to be achieved within a twelve month period following the completion of each initiative. In spite of crude oil differentials being significantly narrower than expected, estimated Refining and Marketing improvements are trending above the range due to other incremental improvements achieved. However, estimated Logistics improvements are trending slightly below the range, primarily due to the weak commodity price environment, which has impacted organic growth and volumes. Our 2016 achievements include the following:

• Los Angeles improvements include:

◦ Crude optimizations from sourcing new types of crude oils;

◦ Crude blending capabilities at the Carson crude terminal that resulted in higher throughput volumes;

◦ New cargo sharing with our Martinez refinery;

◦ Improved pipeline connectivity between the Los Angeles refinery sites; and

◦ West Coast integration of naphtha and gasoline blendstocks.

• Re-distributed in-bound crude oil to our Kenai refinery during maintenance and turnaround activities at our Anacortes refinery to optimize our west coast system; and

• Benefit from the completed second phase of the Salt Lake City Refinery Expansion project.

CURRENT MARKET CONDITIONS

DOMESTIC. The markets in which we operate have continued to experience volatility. Refinery outages, changing logistical infrastructure, and improving domestic macroeconomic conditions have influenced all portions of our business. While the price of Brent crude oil (“Brent”) in the third quarter began slightly above $50 per barrel and ended similarly at $49 per barrel, prices experienced a low below $42 per barrel during the period. An expected tightening in the global crude balance failed to materialize as refinery utilization did not outpace a supply recovery in Canada and various OPEC countries. The decline in domestic U.S. crude stocks resulted in continued narrow U.S. domestic crude differentials compared to prior periods.

In the markets in which we operate, product margins continued to reflect global fundamentals as gasoline demand remained strong and diesel demand remained relatively weak. On a national level, inventories of gasoline were above the 5-year range though stronger gasoline demand mitigated the impact of the absolute level of inventory which allowed days-of-supply to be within the 5-year range. However, weak global distillate demand kept both absolute stock levels and days-of-supply at the top of the historical 5-year range. With both global and regional diesel inventories displaying a supply excess, diesel margins were substantially lower than historical norms and weighed heavily on product crack spreads. Across the quarter, gasoline margins approached seasonal norms, with strong production offset by healthy demand growth. We continue to monitor U.S. and global demand trends and the impact of changes in market prices and fundamentals on our business.

GLOBAL.The markets for crude oil, natural gas and refined products were affected by changes in economic conditions and the associated supply and demand balance changes. Continued slowness in the economic activity in developing countries continues to weigh on product markets, particularly the diesel market. Product values and crude oil prices are set by the market and are outside our control. During the third quarter, the global energy markets experienced volatility from uncertainty on economic growth in the developing regions of the world, the potential for OPEC to reach consensus on production levels, and fluctuations in the financial markets. Diesel experienced lower margins due to a global excess of diesel inventories as a result of co-production with the strong gasoline production during the period and weaker commercial activity in the developing economies.

32| Tesoro Corporation

MANAGEMENT’S DISCUSSION AND ANALYSIS

TESORO LOGISTICS LP

TLLP was formed to own, operate, develop and acquire logistics assets to gather crude oil and natural gas, to distribute, transport and store crude oil and refined products and to process and fractionate natural gas and natural gas liquids (“NGL”).Tesoro Logistics GP, LLC (“TLGP”), a wholly-owned consolidated subsidiary, serves as the general partner of TLLP. We held an approximate 34% interest in TLLP at September 30, 2016, including an approximate 2% general partner interest and all of the incentive distribution rights (“IDRs”). In the first nine months of 2016, 58% of TLLP’s revenue was derived from us primarily under various long-term, fee-based commercial agreements that generally include minimum volume commitments.

TLLP’s strategy, which has remained constant, is to grow earnings through four ways by:

• Focusing on stable, fee-based business;

• Optimizing its existing asset base;

• Pursuing organic expansion opportunities; and

• Continued growth through strategic acquisitions.

Through our ownership of TLLP and TLLP’s continued growth, we expect the logistics operations to maximize the integrated value of assets within the midstream and downstream value chain. This includes creating shareholder value through the lower cost of capital available to TLLP as a limited partnership and receipt of TLLP’s quarterly distributions. As the distributions per unit increase, our proportion of the total distribution will grow at an accelerated rate due to our incentive distribution rights. We believe TLLP is well positioned to achieve its primary business objectives and execute business strategies based on its long-term fee-based contracts, relationship with us, assets positioned in the high demand Williston Basin, and financial flexibility provided by its balanced capital structure, revolving credit facility capacity, dropdown credit facility, ability to access equity capital markets through its continuous issuance program and financial support from us. Refer to the “Capital Resources and Liquidity” section for further discussion of resources available to TLLP.

Relativetothesegoals,in2016,TLLPintendstocontinuetoimplementthisstrategyandhascompletedorannouncedplansto:

• expand TLLP’s assets on its crude oil gathering and transportation system, located in the Bakken Region (the “High Plains System”) in support of growing third-party demand for transportation services and Tesoro’s increased demand for Bakken crude oil in the mid-continent and west coast refining systems, including:

◦ further expanding crude oil storage and transportation capacity and capability of TLLP’s common carrier pipeline in North Dakota and Montana;

◦ expanding TLLP’s gathering footprint in the Bakken Region, including crude oil, natural gas and water, to enhance and improve overall basin logistic efficiencies;

◦ adding other origin and destination points on the High Plains System to increase volumes; and

◦ pursuing strategic assets across the Western U.S. including potential acquisitions from Tesoro.

• expand and optimize TLLP’s natural gas gathering and processing assets located in the Green River Basin, Uinta Basin and Vermillion Basin in the states of Utah, Colorado and Wyoming including:

◦ increase compression on its systems in the Green River and Vermillion basins to enhance natural gas volumes recovered from existing wells and support potential new drilling activity; and

◦ expand its gathering footprint and increase compression capabilities in the Uinta basin to increase volumes on its gathering systems and through its processing assets.

• grow TLLP’s terminalling and transportation business across the Western U.S. through:

◦ increasing its terminalling volumes by expanding capacity and growing third-party services at certain terminals;

◦ optimize Tesoro volumes and grow third-party throughput at its terminalling and transportation assets; and

◦ pursuing strategic assets in the Western U.S. such as the acquisition of Tesoro's terminalling assets recently acquired from Flint Hills Resources and Tesoro’s storage assets in Alaska.

ALASKA STORAGE AND TERMINALLING ASSETS PURCHASE. Effective July 1, 2016, TLLP entered into an agreement to purchase certain storage and terminalling assets owned by Tesoro for total consideration of $444 million to be completed in two phases. On July 1, 2016, TLLP completed the acquisition of the first phase consisting of tankage with a shell capacity of approximately 3.5 million barrels, related equipment and ancillary facilities used for the operations at Tesoro’s Kenai Refinery. The second phase purchase was completed on September 16, 2016 and consisted of refined product terminals in Anchorage and Fairbanks with combined storage capacity of over 600,000 barrels, expected throughput of approximately 10 Mbpd and rail

September 30, 2016 | 33

MANAGEMENT’S DISCUSSION AND ANALYSIS

loading of 7 Mbpd. Consideration paid for the first phase was $266 million, comprised of approximately $240 million in cash, financed with the borrowings under TLLP’s secured dropdown credit agreement (the “TLLP Dropdown Credit Facility”), and TLLP’s issuance of equity to Tesoro with a fair value of $26 million. Consideration for the second phase was $178 million, comprised of approximately $160 million in cash, financed with borrowings under the TLLP Dropdown Credit Facility, and TLLP issuing equity securities with a fair value of approximately $18 million.

Total market value of TLLP common units held by Tesoro was $1.6 billion at both September 30, 2016 and December 31, 2015. At September 30, 2016, Tesoro held 33,194,109 common units at a market value of $48.44 per unit based on the closing unit price as of that date. At December 31, 2015, Tesoro held 32,445,115 common units at a market value of $50.32 per unit based on the closing unit price as of that date.

CASH DISTRIBUTIONS RECEIVED FROM TLLP, INCLUDING INCENTIVE DISTRIBUTION RIGHTS (in millions)

	Three Months Ended September 30,				Nine Months Ended September 30,
	2016		2015		2016		2015
Cash distributions received from TLLP (a):
For common units held	$	27	$	20	$	79	$	58
For general partner units held, including IDRs	38		18		95		48
Total Cash Distributions Received from TLLP	$	65	$	38	$	174	$	106

(a) Represents distributions received from TLLP during the three and nine months ended September 30, 2016 and 2015 on common units and general partner units held by Tesoro.

VANCOUVER ENERGY

Consistent with our strategic priorities to drive value chain optimization and capture value-driven growth, we partnered with Savage Companies to construct, own and operate a unit train unloading and marine loading terminal at Port of Vancouver, USA (“Vancouver Energy”) with a total capacity of 360 Mbpd allowing for the delivery of cost-advantaged North American crude oil to the U.S. West Coast. The entire project scope is estimated to cost $210 million. While there is the potential that additional scope changes may result from the final Energy Facility Site Evaluation Council (“EFSEC”) review, we do not expect those changes will be material to the estimated costs. During the third quarter of 2016, we became the majority owner of Vancouver Energy.

The project is progressing through the EFSEC permitting process in the state of Washington. EFSEC released the Draft Environmental Impact Statement in November 2015 and concluded adjudicative hearings on September 6, 2016 with the filing of all parties’ post-hearing briefs. On October 6, 2016, Vancouver Energy submitted its revised permit application to EFSEC in keeping with EFSEC’s hearing rules and regulations. In the revised permit application, Vancouver Energy offered conditions that are well above regulatory requirements including a performance-based throughput structure by which EFSEC could limit the project’s initial throughput by 50%, from 360 to 180 Mbpd. The performance-based throughput structure includes the ability to incrementally increase the facility’s throughput by 90 Mbpd after 12 consecutive months of acceptable safety and environmental performance. Two such performance periods would result in the originally proposed 360 Mbpd facility. EFSEC is now deliberating its recommendation to the governor of Washington. Following the issuance of the EFSEC recommendation and subject to the Governor’s approval, permits would be issued for construction. Project construction is estimated to take nine to twelve months, however initial operations are expected to begin within a few months of construction start.

RESULTS OF OPERATIONS

A discussion and analysis of the factors contributing to our results of operations is presented below. The accompanying condensed consolidated financial statements, together with the following information, are intended to provide investors with a reasonable basis for assessing our historical operations, but should not serve as the only criteria for predicting our future performance.

34| Tesoro Corporation

MANAGEMENT’S DISCUSSION AND ANALYSIS

ITEMS IMPACTING COMPARABILITY

The TLLP financial and operational data presented include the historical results of all assets acquired from Tesoro prior to the acquisition dates. The acquisitions from Tesoro were transfers between entities under common control. Accordingly, the financial information of our refining and TLLP segments contained herein have been retrospectively adjusted to include the historical results of the assets acquired in the acquisitions from Tesoro prior to the effective date of each acquisition for all periods presented and do not include revenue for transactions with Tesoro with the exception of regulatory tariffs on its pipeline assets. The TLLP financial data is derived from the combined financial results of the TLLP predecessor (the “TLLP Predecessor”). We refer to the TLLP Predecessor and, prior to the acquisition date, the acquisitions from Tesoro collectively, as “TLLP’s Predecessors.”

NON-GAAP MEASURES

As a supplement to our financial information presented in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”), our management uses certain “non-GAAP” measures to analyze our results of operations, assess internal performance against budgeted and forecasted amounts and evaluate future impacts to our financial performance as a result of capital investments, acquisitions, divestitures and other strategic projects.

During the second quarter of 2016, management revised its internal and external use of non-GAAP measures to eliminate any adjustments to U.S. GAAP net earnings and earnings before interest, income taxes, and depreciation and amortization expenses (“EBITDA”) for items previously considered “special items.” We believe our revised presentation of net earnings and EBITDA and descriptions of significant activities impacting U.S. GAAP net earnings are sufficient to convey our financial performance to the users of our financial statements.

Following these changes, our non-GAAP measures include the following:

• Financial non-GAAP measure of EBITDA, as defined above; and

• Debt to capitalization ratio excluding TLLP, reflects the ratio achieved by dividing the net result of our consolidated debt less all debt owed by TLLP (both net of unamortized issuance costs) by the sum of our consolidated debt less TLLP’s total debt (both net of unamortized issuance costs) and our total equity less noncontrolling interest associated with the public ownership of TLLP.

We present the measures defined above because we believe these measures help us analyze our results of operations and liquidity in conjunction with our U.S. GAAP results. Investors, analysts, lenders and ratings agencies may use these measures to help analyze our results of operations and liquidity in conjunction with our U.S. GAAP results, including but not limited to the following:

• our operating performance as compared to other publicly traded companies in the refining, logistics and marketing industries, without regard to historical cost basis or financing methods;

• our ability to incur and service debt and fund capital expenditures; and

• the viability of acquisitions and other capital expenditure projects and the returns on investment of various investment opportunities.

In addition, these measures are used by management to assess internal performance. We believe these measures, when supplemental to information presented under U.S. GAAP, may provide meaningful information to the users of our financial statements. Each of the performance measures should not be used in isolation from their comparable U.S. GAAP measure and thus should not be considered as alternatives to any U.S. GAAP measure. Non-GAAP measures have important limitations as analytical tools, because they exclude some, but not all, items that affect net earnings and operating income.

September 30, 2016 | 35

MANAGEMENT’S DISCUSSION AND ANALYSIS

SUMMARY

	Three Months Ended September 30,						Nine Months Ended September 30,
	2016			2015			2016			2015
	(In millions, except per share amounts)
Revenues	$	6,544		$	7,743		$	17,930		$	22,438
Costs and Expenses
Cost of sales (excluding the lower of cost or market inventory valuation adjustment)	5,232			5,429			14,114			17,090
Lower of cost or market inventory valuation adjustment	(20		)	83			(236		)	41
Operating expenses	652			640			1,872			1,816
Selling, general and administrative expenses	107			103			283			285
Depreciation and amortization expenses	211			192			633			553
Loss on asset disposals and impairments	2			4			7			12
Operating Income	360			1,292			1,257			2,641
Interest and financing costs, net	(70		)	(54		)	(190		)	(163		)
Equity in earnings of equity method investments	7			6			12			9
Other income, net	—			13			32			12
Earnings Before Income Taxes	297			1,257			1,111			2,499
Income tax expense	95			458			362			888
Net Earnings from Continuing Operations	202			799			749			1,611
Earnings (loss) from discontinued operations, net of tax	(1		)	—			10			(4		)
Net Earnings	201			799			759			1,607
Less: Net earnings from continuing operations attributable to noncontrolling interest	32			40			103			121
Net Earnings Attributable to Tesoro Corporation	$	169		$	759		$	656		$	1,486
Net Earnings (Loss) Attributable to Tesoro Corporation
Continuing operations	$	170		$	759		$	646		$	1,490
Discontinued operations	(1		)	—			10			(4		)
Total	$	169		$	759		$	656		$	1,486
Net Earnings (Loss) per Share - Basic
Continuing operations	$	1.44		$	6.19		$	5.43		$	11.98
Discontinued operations	(0.01		)	—			0.08			(0.03		)
Total	$	1.43		$	6.19		$	5.51		$	11.95
Weighted average common shares outstanding - Basic	118.2			122.5			119.1			124.3
Net Earnings (Loss) per Share - Diluted
Continuing operations	$	1.43		$	6.13		$	5.37		$	11.85
Discontinued operations	(0.01		)	—			0.08			(0.03		)
Total	$	1.42		$	6.13		$	5.45		$	11.82
Weighted average common shares outstanding - Diluted	119.3			123.8			120.4			125.7

36| Tesoro Corporation

MANAGEMENT’S DISCUSSION AND ANALYSIS

	Three Months Ended September 30,				Nine Months Ended September 30,
	2016		2015		2016		2015
	(In millions)
Reconciliation of Net Earnings to EBITDA
Net earnings	$	201	$	799	$	759	$	1,607
Depreciation and amortization expenses	211		192		633		553
Interest and financing costs, net	70		54		190		163
Income tax expense	95		458		362		888
EBITDA	$	577	$	1,503	$	1,944	$	3,211

THREE MONTHS ENDEDSEPTEMBER 30, 2016 VERSUS THREE MONTHS ENDEDSEPTEMBER 30, 2015

OVERVIEW.Our net earnings from continuing operations attributable to Tesoro Corporation were $170 million ($1.43 per diluted share) for the three months ended September 30, 2016 (“2016 Quarter”) compared to $759 million ($6.13 per diluted share) for the three months ended September 30, 2015 (“2015 Quarter”). During the 2016 Quarter, EBITDA decreased$926 million, or 62%, to $577 million driven by a decline in gross margins.

GROSS MARGINS.Our consolidated gross margin decreased by $899 million during the 2016 Quarter compared to the 2015 Quarter driven primarily by lower gross refining and fuel margins partially offset by increased TLLP revenues. Our gross refining margin decreased$810 million driven by a lower margin environment, narrowing crude oil differentials and higher renewable identification number (“RIN”) prices partially offset by a benefit of $20 million from a lower of cost or market (“LCM”) reserve adjustment during the 2016 Quarter compared to an expense of $83 million during the 2015 Quarter. This translated into an overall net decrease of $10.35 in our gross refining margin per barrel. Our gross marketing margin decreased$113 million as average fuel margins returned to the 5-year range partially offset by increased volumes from our growing portfolio of branded stations.

DEPRECIATION AND AMORTIZATION EXPENSES.Our depreciation and amortization expensesin the 2016 Quarter was $211 million versus $192 million in the 2015 Quarter. The increase was primarily driven by various projects being placed into service in late 2015 as well as additional depreciation associated with acquisitions completed in 2016.

INTEREST AND FINANCING COSTS.Interest and financing costs of $70 million in the 2016 Quarter were higher than the $54 million incurred in the 2015 Quarter due to the impact of TLLP’s note issuances in May 2016 and the write-off of $6 million of unamortized costs associated with the termination of Tesoro’s Sixth Amended and Restated Credit Agreement.

OTHER INCOME, NET.Other income, net for the 2015 Quarter included an $11 million gain for an insurance settlement. There were no corresponding items for the 2016 Quarter.

INCOME TAXES.Our income tax expense totaled $95 million in the 2016 Quarter versus $458 million in the 2015 Quarter. The combined federal and state effective income tax rate was 32.0% and 36.4% during the 2016 Quarter and the 2015 Quarter, respectively. The 2016 Quarter effective income tax rate was lower due to an increased share of income from non-taxable noncontrolling interests attributable to TLLP.

NINE MONTHS ENDEDSEPTEMBER 30, 2016 VERSUS NINE MONTHS ENDEDSEPTEMBER 30, 2015

OVERVIEW.Our net earnings from continuing operations attributable to Tesoro Corporation were $646 million ($5.37 per diluted share) for the nine months ended September 30, 2016 (“2016 Period”) compared to $1.5 billion ($11.85 per diluted share) for the nine months ended September 30, 2015 (“2015 Period”). During the 2016 Period, EBITDA decreased$1.3 billion, or 39%, to $1.9 billion driven by the decline in gross margins.

GROSS MARGINS.Our consolidated gross margin decreased by $1.3 billion during the 2016 Period compared to the 2015 Period driven primarily by lower gross refining and marketing fuel margins. Our gross refining margin decreased$1.3 billion during the 2016 Period compared to the 2015 Period, which included a net LCM reserve adjustment benefit of $236 million during the 2016 Period compared to an expense of $41 million for the 2015 Period. The decreased gross refining margin was driven by narrowing crude oil differentials and higher RIN prices translating in an overall decrease of $6.47 in our gross refining margin per barrel. Our gross marketing margin decreased$63 million as the average fuel margins returned to the 5-year range partially offset by increased volumes from our growing portfolio of branded stations. TLLP revenues, net of operating expenses, increased$62 million primarily due to higher storage fees paid to TLLP under commercial agreements from acquired assets and increased transportation revenue with more throughput.

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DEPRECIATION AND AMORTIZATION EXPENSES.Our depreciation and amortization expenses in the 2016 Period was $633 million versus $553 million in the 2015 Period. The increase is largely driven by various projects being placed into service in late 2015 as well as additional depreciation associated with acquisitions completed in 2016.

INTEREST AND FINANCING COSTS.Interest and financing costs of $190 million in the 2016 Period were higher than the $163 million incurred in the 2015 Period due to the impact of TLLP’s note issuances in May 2016 and the write-off of $6 million of unamortized costs associated with the termination of Tesoro’s Sixth Amended and Restated Credit Agreement.

OTHER INCOME, NET.Included in other income of $32 million for the 2016 Period were insurance proceeds related to a shipment of contaminated crude oil that was delivered in 2014, a refund of certain tariff charges and a gain recognized during the 2016 Period by TLLP on a settlement of amounts disputed by one of its customers on the annual calculation of the natural gas gathering rate. TLLP assumed the obligation for this litigation with the acquisition as part of its purchase price allocation for the natural gas business acquired in 2014 and recognized an estimated settlement amount in excess of the actual amount paid in March 2016. The 2015 Period included a gain for an insurance settlement of $11 million.

INCOME TAXES.Our income tax expense totaled $362 million in the 2016 Period versus $888 million in the 2015 Period. The combined federal and state effective income tax rate was 32.6% and 35.5% during the 2016 Period and the 2015 Period, respectively. The 2016 Period rate benefited from a $16 million decrease in expense related to the early adoption of ASU 2016-09. See Note 1 to our condensed consolidated financial statements in Item 1 for additional information on ASU 2016-09. The 2016 Period effective income tax rate was also lower due to an increased share of income from non-taxable noncontrolling interests attributable to TLLP.

SEGMENT RESULTS OF OPERATIONS

REFINING SEGMENT

We currently own and operate seven petroleum refineries located in the western United States and sell transportation fuels to a wide variety of customers. Our refineries produce the majority of the transportation fuels that we sell. Our seven refineries have a combined crude oil capacity of 895 Mbpd. We purchase crude oil and other feedstocks from domestic and foreign sources, including the Middle East, South America, West Africa, Canada, and other locations either through term agreements with renewal provisions or in the spot market. Our marketing segment, including its branded retail network, provides a committed outlet for the majority of the gasoline produced by our refineries; however, we also sell gasoline and gasoline blendstocks, jet fuel, diesel fuel, heavy fuel oils and residual products in bulk and opportunistically export refined products to certain foreign markets.

MARKET OVERVIEW.Results from our refining segment are heavily influenced by our gross refining margin and refinery throughputs. The gross refining margin is the difference between the prices of all manufactured refined products sold and the cost of crude oil and other feedstocks used to produce refined products, including the cost of transportation and distribution. The market for crude oil and products is affected by changes in economic conditions and supply and demand balance. Product values and crude oil prices are set by the market and are outside of our control. When evaluating the markets in which we operate, we utilize the U.S. Energy Information Administration and other industry sources, to gather supply, demand, utilization and import and export information to forecast and monitor market conditions for our operating regions. We focus on PADD V, or the West Coast of the U.S. where the majority of our operations are located. PADD V is defined by the Petroleum Administration for Defense Districts as the states of Alaska, Arizona, California, Hawaii, Nevada, Oregon and Washington.

As a performance benchmark and a comparison with other industry participants, we utilize the West Coast and Mid-Continent crack spreads. The crack spread is a measure of the difference between market prices for crude oil and refined products and is a commonly used proxy within the industry to estimate or identify trends in gross refining margins. Crack spreads can fluctuate significantly over time as a result of market conditions and supply and demand balances. The West Coast 321 crack spread is calculated using 3 barrels of Alaska North Slope crude oil (“ANS”) producing 2 barrels of Los Angeles California Air Resources Board (“CARB”) gasoline and 1 barrel of Los Angeles CARB diesel. The Mid-Continent 321 crack spread is calculated using 3 barrels of West Texas Intermediate crude oil (“WTI”) producing 2 barrels of Group 3 gasoline and 1 barrel of Group 3 diesel.

Our actual gross refining margins differ from these crack spreads based on the actual slate of crude oil we run at our refineries and the products we produce or yield. The global commodity markets for crude oil and refined products are subject to significant volatility resulting in rapidly changing prices and margin environments. Our refineries process a variety of crude oils that are sourced from around the world. The slate of crude oil we process can vary over time as a result of changes in market prices and shipping rates. Additionally, our refining gross margin is impacted by the changing crude oil differentials, which is the difference

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between the benchmark crude oils, WTI and Brent, and the actual crude oil we run at our refineries. We may experience financial risk associated with price volatility of crude oil and refined products and we may utilize financial hedge instruments to help mitigate such risks where possible.

KEY MARKET INFORMATION USED TO MONITOR OUR BUSINESS (in $/barrel)

	Three Months Ended September 30,					Nine Months Ended September 30,
	2016		2015			2016		2015
Crack Spreads
West Coast 321 (ANS)	$	15.68	$	30.88		$	16.74	$	26.71
Mid-Continent 321 (WTI)	19.18		22.10			16.94		19.53
Crude Oil Differentials
Brent to WTI	$	1.97	$	4.03		$	1.66	$	5.62
Brent to ANS	2.14		(1.05		)	1.35		1.25
WTI to Bakken (Clearbrook)	1.33		2.53			1.12		2.75
ANS to Bakken (Clearbrook)	1.16		7.61			1.44		7.11
ANS to San Joaquin Valley Heavy (CA)	6.29		8.12			6.96		8.41
ANS to Canadian Lt. Sweet	2.18		8.57			2.01		6.99

Source: PLATTS

WEST COAST. Average U.S. West Coast crack spread margins were down approximately 49% in the 2016 Quarter, as compared to the 2015 Quarter and were down approximately 37% in the 2016 Period, as compared to the 2015 Period. The lower margin environment along with lower mid-continent crude oil differentials have negatively impacted our results. Despite the increased product demand year over year along with some unplanned refinery outages, margins were down significantly compared to 2015. During the 2015 Period, product supply was disrupted by several unplanned refinery outages in the region along with work stoppages at our Anacortes, Washington and Los Angeles and Martinez, California refineries, which resulted in a strong crack spread environment.

MID-CONTINENT.Average Mid-Continent crack spread margins were down approximately 13% in the 2016 Quarter and Period, as compared to the 2015 Quarter and Period. The lower margin environment along with lower mid-continent crude oil differentials have negatively impacted our results. The WTI to Bakken differential has decreased by approximately $1.20 per barrel in the 2016 Quarter increasing the price of Bakken, which resulted in lower gross margins. Bakken crude oil represented over 50% of the crude oil consumed by our Mid-Continent system in the 2016 Period.

OPERATIONAL DATA AND RESULTS.Management uses various operating metrics to evaluate performance and efficiency and to compare profitability to other companies in the industry. These measures include:

• Gross refining margin per barrel calculated by dividing gross refining margin (revenues less costs of feedstocks, purchased refined products, transportation and distribution costs, and any LCM) by total refining throughput; and

• Manufacturing costs before depreciation and amortization expenses (“Manufacturing Costs”) per barrel calculated by dividing Manufacturing Costs by total refining throughput.

Investors and analysts use these financial measures to help analyze and compare companies in the industry on the basis of operating performance.

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REFINING SEGMENT OPERATING DATA AND RESULTS (dollars in millions, except per barrel amounts)

	Three Months Ended September 30,					Nine Months Ended September 30,
	2016			2015		2016			2015
Throughput (Mbpd)
Heavy crude (a)	186			178		176			150
Light crude	636			635		595			575
Other feedstocks	51			48		49			56
Total Throughput	873			861		820			781
Yield (Mbpd)
Gasoline and gasoline blendstocks	455			438		449			405
Diesel fuel	202			195		183			166
Jet fuel	133			122		117			119
Heavy fuel oils, residual products, internally produced fuel and other	143			158		126			140
Total Yield	933			913		875			830
Refined Product Sales (Mbpd) (b)
Gasoline and gasoline blendstocks	531			530		527			510
Diesel fuel	215			213		204			198
Jet fuel	158			148		145			153
Heavy fuel oils, residual products and other	112			101		105			91
Total Refined Product Sales	1,016			992		981			952
Refining Revenues
Refined products (c)	$	5,641		$	6,817	$	15,434		$	19,867
Crude oil resales and other	257			172		710			780
Total Revenues	5,898			6,989		16,144			20,647
Refining Cost of Sales
Cost of sales (excluding LCM)	5,189			5,367		13,965			16,934
LCM	(20		)	83		(236		)	41
Total Cost of Sales	5,169			5,450		13,729			16,975
Gross refining margin	729			1,539		2,415			3,672
Expenses
Operating expenses
Manufacturing costs	412			383		1,172			1,177
Other operating expenses	116			117		318			259
Selling, general and administrative expenses	1			5		5			12
Depreciation and amortization expenses	148			133		445			373
Loss on asset disposals and impairments	—			2		—			8
Segment Operating Income	$	52		$	899	$	475		$	1,843
Gross Refining Margin ($/throughput barrel)	$	9.08		$	19.43	$	10.75		$	17.22
Manufacturing Cost before Depreciation and Amortization Expenses ($/throughput barrel)	$	5.11		$	4.84	$	5.22		$	5.53

(a) We define heavy crude oil as crude oil with an American Petroleum Institute gravity of 24 degrees or less.

(b) Sources of total refined product sales include refined products manufactured at our refineries and refined products purchased from third parties. Total refined product sales include sales of manufactured and purchased refined products. Refined product sales include all sales through our marketing segment as well as in bulk markets and exports through our refining segment.

(c) Refined product sales include intersegment sales to our Marketing segment of $3.6 billion and $4.5 billion for the three months ended September 30, 2016 and 2015, respectively, and $10.2 billion and $12.8 billion for the nine months ended September 30, 2016 and 2015, respectively.

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REFINING SEGMENTS OPERATING RESULTS BY REGION (dollars in millions, except per barrel amounts)

	Three Months Ended September 30,					Nine Months Ended September 30,
	2016			2015		2016			2015
California (Martinez and Los Angeles)
Refining Revenues
Refined products	$	3,680		$	4,525	$	10,358		$	13,501
Crude oil resales and other (a)	55			94		157			233
Total Revenue	3,735			4,619		10,515			13,734
Refining Cost of Sales
Cost of sales (excluding LCM) (a)	3,292			3,547		9,076			11,296
LCM	(10		)	56		(154		)	26
Total Cost of Sales	3,282			3,603		8,922			11,322
Gross refining margin	453			1,016		1,593			2,412
Expenses
Manufacturing costs	285			284		823			851
Other operating expenses	57			78		152			164
Selling, general and administrative expenses	1			5		4			11
Depreciation and amortization expenses	95			88		285			249
Loss on asset disposals and impairments	—			1		—			3
Operating Income	$	15		$	560	$	329		$	1,134
Refining throughput (Mbpd)	533			534		504			494
Gross refining margin per throughput barrel	$	9.24		$	20.68	$	11.54		$	17.88
Manufacturing costs per throughput barrel	$	5.79		$	5.79	$	5.97		$	6.32
Pacific Northwest (Washington and Alaska)
Refining Revenues
Refined products	$	1,146		$	1,332	$	2,934		$	3,771
Crude oil resales and other (a)	89			53		175			314
Total Revenue	1,235			1,385		3,109			4,085
Refining Cost of Sales
Cost of sales (excluding LCM) (a)	1,117			1,129		2,778			3,434
LCM	(8		)	18		(60		)	10
Total Cost of Sales	1,109			1,147		2,718			3,444
Gross refining margin	126			238		391			641
Expenses
Manufacturing costs	69			59		190			181
Other operating expenses	16			20		43			48
Selling, general and administrative expenses	—			—		1			—
Depreciation and amortization expenses	24			24		69			64
Loss on asset disposals and impairments	—			1		—			1
Operating Income	$	17		$	134	$	88		$	347
Refining throughput (Mbpd)	191			192		178			168
Gross refining margin per throughput barrel	$	7.17		$	13.47	$	8.02		$	13.98
Manufacturing costs per throughput barrel	$	3.87		$	3.35	$	3.87		$	3.97

(a) Certain of our foreign operations that are typically reported with our Pacific Northwest region were erroneously reported in our California region during the three and six months ended June 30, 2016 and 2015 with no impact on regional or consolidated gross refining margins presented for those periods. For the three and nine month periods ended September 30, 2016 and 2015 presented above, those foreign operations are reported in the correct regions impacting comparability period over period.

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	Three Months Ended September 30,					Nine Months Ended September 30,
	2016			2015		2016			2015
Mid-Continent (North Dakota and Utah)
Refining Revenues
Refined products	$	815		$	960	$	2,142		$	2,595
Crude oil resales and other	113			25		378			233
Total Revenue	928			985		2,520			2,828
Refining Cost of Sales
Cost of sales (excluding LCM)	780			691		2,111			2,204
LCM	(2		)	9		(22		)	5
Total Cost of Sales	778			700		2,089			2,209
Gross refining margin (a)	150			285		431			619
Expenses
Manufacturing costs	58			40		159			145
Other operating expenses (a)	43			19		123			47
Selling, general and administrative expenses	—			—		—			1
Depreciation and amortization expenses	29			21		91			60
Loss on asset disposals and impairments	—			—		—			4
Operating Income	$	20		$	205	$	58		$	362
Refining throughput (Mbpd)	149			135		138			119
Gross refining margin per throughput barrel	$	10.94		$	22.95	$	11.40		$	19.05
Manufacturing costs per throughput barrel	$	4.27		$	3.19	$	4.21		$	4.45

(a) Included in the Mid-Continent region’s other operating expenses is $43 million for the nine months ended September 30, 2016, related to our acquisition of Great Northern Midstream LLC. Revenues associated with those costs are recognized in gross refining margin.

THREE MONTHS ENDEDSEPTEMBER 30, 2016 VERSUS THREE MONTHS ENDEDSEPTEMBER 30, 2015

OVERVIEW.Operating income for our refining segmentdecreased$847 million, or 94%, to $52 million during the 2016 Quarter as compared to the 2015 Quarter. These results include a benefit of $20 million related to our LCM adjustment for the 2016 Quarter and an expense of $83 million for the 2015 Quarter. The decrease was driven by an overall decline in the margin environment during the 2016 Quarter, as seen in the lower crack spreads and differentials. Average U.S. West Coast crack spreads were approximately $16 per barrel, down over $15 per barrel, or 49%, in the 2016 Quarter as compared to the 2015 Quarter and average WTI to Bakken differentials decreased approximately 47%.

REFINING THROUGHPUT.Total refining throughput was higher at 873 Mbpd compared to 861 Mbpd during the 2016 Quarter as compared to the 2015 Quarter primarily due to the acquisition of the Dickinson Refinery in late June 2016 and strong operating performance and reliability in both periods.

GROSS REFINING MARGIN. Total gross refining margin decreased$810 million, or 53%, to $729 million in the 2016 Quarter as compared to the 2015 Quarter. On a per barrel basis, our gross refining margin decreased$10.35 per barrel, or 53%, to $9.08 per barrel in the 2016 Quarter as compared to the 2015 Quarter given a weaker margin environment across the regions in which we operate, narrower crude oil differentials and higher RIN prices.Partially offsetting the decrease was an benefit of $20 million related to the LCM reserve adjustment recognized for the 2016 Quarter versus an expense of $83 million for the 2015 Quarter and a resolution of a customer dispute.

MANUFACTURING COSTS AND OTHER OPERATING EXPENSES. Total manufacturing costs increased from $383 million in the 2015 Quarter to $412 million in the 2016 Quarter primarily due to the addition of the Dickinson Refinery and Tesoro Great Plains assets in 2016. Other operating expenses remained relatively flat over the period.

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DEPRECIATION AND AMORTIZATION. Depreciation and amortization expenses increased by $15 million during the 2016 Quarter compared to the 2015 Quarter largely due to assets acquired in the year and the amortization of several projects placed in service in late 2015, including turnaround and catalyst replacement costs incurred at our California refineries as well as the impact from the Great Northern Midstream and Dickinson Refinery acquisitions.

NINE MONTHS ENDEDSEPTEMBER 30, 2016 VERSUS NINE MONTHS ENDEDSEPTEMBER 30, 2015

OVERVIEW.Operating income for our refining segment decreased$1.4 billion, or 74%, to $475 million during the 2016 Period as compared to $1.8 billion during the 2015 Period due to a weaker margin environment and an overall decline in market prices for crude oil and refined products during the period. Average U.S. West Coast crack spreads were approximately $17 per barrel, down nearly $10 per barrel, or 37%, in the 2016 Period as compared to the 2015 Period and average WTI to Bakken differentials decreased approximately 59%. The 2016 Period reflects a benefit of $236 million related to our LCM adjustment compared to an expense of $41 million for the 2015 Period.

REFINING THROUGHPUT. Total refining throughput was significantly higher at 820 Mbpd compared to 781 Mbpd during the 2016 Period as compared to the 2015 Period primarily due to the impacts of work stoppages and turnarounds experienced in the 2015 Period along with the addition of the Dickinson Refinery in June 2016. However, throughput during the 2016 Period was also negatively impacted by planned and unplanned maintenance at several of our facilities.

GROSS REFINING MARGIN. Total gross refining margin decreased$1.3 billion, or 34%, to $2.4 billion in the 2016 Period as compared to the 2015 Period. On a per barrel basis our gross refining margin decreased$6.47 per barrel, or 38%, to $10.75 per barrel in the 2016 Period as compared to the 2015 Period attributable to a weaker margin environment across the regions that we operate, narrower crude oil differentials and higher RIN prices. Partially offsetting the decrease was a benefit of $236 million compared to an expense of $41 million for the 2015 Periodrelated to the LCM reserve adjustment.

MANUFACTURING COSTS AND OTHER OPERATING EXPENSES. Total manufacturing costs remained largely flat at $1.2 billion in both the 2016 Period and the 2015 Period, but other operating expenses increased$59 million to $318 million in the 2016 Period as compared to the 2015 Period mostly attributable to the impact of our acquisitions in 2016.

DEPRECIATION AND AMORTIZATION. Depreciation and amortization expenses increased by $72 million during the 2016 Period compared to the 2015 Period due to the amortization of turnaround and catalyst replacement costs incurred at our California refineries and the acquisition of assets in the year as well as the impact from the Great Northern Midstream and Dickinson Refinery acquisitions.

TLLP SEGMENT

TLLP is a publicly traded limited partnership that was formed to own, operate, develop and acquire logistics assets. Its assets are integral to the success of Tesoro’s refining and marketing operations and generate revenue by charging fees for gathering crude oil and natural gas, for terminalling, transporting and storing crude oil and refined products and for processing natural gas and fractionating NGLs.

OPERATIONAL DATA AND RESULTS.Management uses average revenue per barrel and average revenue per million British thermal units (“MMBtu”) to evaluate performance and compare profitability to other companies in the industry. We calculate average revenue per barrel as revenue divided by total throughput or keep-whole processing volumes. We calculate average revenue per MMBtu as revenue divided by gas gathering and fee-based processing volume. Investors and analysts use these financial measures to help analyze and compare companies in the industry on the basis of operating performance. These financial measures should not be considered as an alternative to segment operating income, revenues and operating expenses or any other measure of financial performance presented in accordance with U.S. GAAP.

MARKET OVERVIEW.During the third quarter, the spot prices of the commodities that TLLP handles decreased minimally, including crude oil, natural gas, and refined products while natural gas liquids increased. Thus, the third quarter stalled the price recovery trend that was realized in the first half of the year. While the U.S. crude stocks declined over 22 million barrels over the quarter, this was offset by a larger than expected increase in production from members of the Organization of the Petroleum Exporting Countries and a persistent global supply overhang. Strong year-over-year gasoline demand growth in the U.S. was met with increased production keeping stocks from declining to the previous five-year range. While commodity prices remain relatively depressed compared to most periods, crude oil and natural gas producers began to react approximately eight to ten weeks after price increases in April and May. At the end of last quarter, the U.S. oil and gas rig count was beginning to increase after seven consecutive quarters of declines. During the third quarter, rig count increased thirty four percent over the May low. Additionally,

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improved drilling techniques and better well management have increased production per well and many producers have a back-log of uncompleted wells which are available for completion. Collectively these factors may help boost production volumes along with rig count increases.

Low retail prices, seasonal trends, and healthy economic conditions over the third quarter continued to support increased demand for refined products from our downstream refineries and marketing customers. TLLP continues to see a limited impact to its business from the lifting of the crude export ban and expects minimal impact on its business in the short term. TLLP continues to monitor the impact of these changes in market prices and fundamentals on its business in the western U.S. TLLP believes that its diversified portfolio, which is underpinned by long-term contracts, many of which are supported by minimum volume commitments, adequately supports its goals and objectives.

TLLP SEGMENT OPERATING DATA

	Three Months Ended September 30,				Nine Months Ended September 30,
	2016		2015		2016		2015
Gathering
Gas gathering throughput (thousands of MMBtu/d) (a)	887		1,115		881		1,069
Average gas gathering revenue per MMBtu (a)	$	0.48	$	0.45	$	0.51	$	0.44
Crude oil gathering pipeline throughput (Mbpd)	206		199		210		182
Average crude oil gathering pipeline revenue per barrel	$	1.71	$	1.71	$	1.73	$	1.77
Crude oil trucking volume (Mbpd)	32		34		30		42
Average crude oil trucking revenue per barrel	$	3.25	$	3.14	$	3.26	$	3.24
Processing
NGLs processing throughput (Mbpd)	6.7		7.8		7.4		7.5
Average keep-whole fee per barrel of NGLs	$	38.35	$	35.75	$	36.58	$	34.26
Fee-based processing throughput (thousands of MMBtu/d)	625		767		648		742
Average fee-based processing revenue per MMBtu	$	0.50	$	0.39	$	0.45	$	0.40
Terminalling and Transportation
Terminalling throughput (Mbpd)	1,023		964		998		932
Average terminalling revenue per barrel	$	1.33	$	1.05	$	1.27	$	1.08
Pipeline transportation throughput (Mbpd)	908		838		866		819
Average pipeline transportation revenue per barrel	$	0.38	$	0.40	$	0.39	$	0.39

(a) Prior to the deconsolidation of Rendezvous Gas Services, L.L.C. (“RGS”) as of January 1, 2016, fees paid by TLLP to RGS were eliminated upon consolidation and third-party transactions, including revenue and throughput volumes, were included in TLLP’s results of operations. Third party volumes associated with RGS, included in gas gathering volume for the three and nine months ended September 30, 2015, were 142 thousand and 145 thousand MMBtu/d and reduced our average gas gathering revenue per MMBtu for both periods by $0.05.

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TLLP SEGMENT OPERATING RESULTS (in millions)

	Three Months Ended September 30,				Nine Months Ended September 30,
	2016 (a)		2015 (a)		2016 (a)		2015 (a)
Segment Operating Income
Revenues
Gathering
Gas gathering	$	39	$	46	$	122	$	128
Crude oil gathering pipeline	33		31		100		88
Crude oil trucking	9		10		27		37
Other	1		—		6		—
Processing
NGLs processing	23		26		74		71
Fee-based processing	29		28		80		81
Other processing	17		17		54		53
Terminalling and transportation
Terminalling	125		93		345		275
Pipeline transportation	32		31		93		87
Total Revenues (b)	308		282		901		820
Expenses
Operating expenses (c)	104		103		313		294
General and administrative expenses (d)	24		28		70		81
Depreciation and amortization expenses	45		45		134		133
Loss on asset disposals and impairments	2		—		3		—
Segment Operating Income	$	133	$	106	$	381	$	312

(a) Adjusted to include the historical results of TLLP’s Predecessors. Refer to “Items Impacting Comparability” for further discussion.

(b) TLLP segment revenues from services provided to our refining segment were $184 million and $152 million for the three months ended September 30, 2016 and 2015, respectively, and $521 million and $454 million for the nine months ended September 30, 2016 and 2015, respectively. These amounts are eliminated upon consolidation.

(c) TLLP segment operating expenses include amounts billed by Tesoro for services provided to TLLP under various operational contracts. Amounts billed by Tesoro totaled $40 million and $33 million for the three months ended September 30, 2016 and 2015, respectively, and $113 million and $93 million for the nine months ended September 30, 2016 and 2015, respectively. Operating expenses also include imbalance gains and reimbursements of $5 million and $12 million for the three months ended September 30, 2016 and 2015, respectively, and $17 million and $31 million for the nine months ended September 30, 2016 and 2015, respectively. These amounts are eliminated upon consolidation. TLLP segment third-party operating expenses related to the transportation of crude oil and refined products related to Tesoro’s sale of those refined products during the ordinary course of business are reclassified to cost of sales in our condensed statements of consolidated operations upon consolidation.

(d) TLLP segment general and administrative expenses include amounts charged by Tesoro for general and administrative services provided to TLLP under various operational and administrative contracts. These amounts totaled $18 million and $16 million for the three months ended September 30, 2016 and 2015, respectively, and $51 million for both the nine months ended September 30, 2016 and 2015, and are eliminated upon consolidation. TLLP segment third-party general and administrative expenses are reclassified to cost of sales as it relates to Tesoro’s sale of refined products in our condensed statements of consolidated operations upon consolidation.

THREE MONTHS ENDEDSEPTEMBER 30, 2016 VERSUS THREE MONTHS ENDEDSEPTEMBER 30, 2015

OVERVIEW.Operating income for TLLP increased$27 million to $133 million for the 2016 Quarter as compared to the 2015 Quarter primarily as a result of terminalling and transportation assets acquired at the end of 2015 and in the third quarter of 2016.

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MANAGEMENT’S DISCUSSION AND ANALYSIS

REVENUES AND THROUGHPUT.Mainly attributable to storage and pipeline assets in Los Angeles, California and terminals and tankage in Alaska acquired from Tesoro in November 2015 and the third quarter of 2016, respectively, revenues increased$26 million to $308 million during the 2016 Quarter compared to the 2015 Quarter. Average gas gathering throughput decreased, excluding the impact of the RGS deconsolidation, due to declines in natural gas production while average crude oil gathering throughput volumes increasedas a result of projects to expand the pipeline gathering system capabilities. NGL and Fee-based processing throughput volumes decreased as a result of lower natural gas production with the revenue impact partially offset by improved utilization and increased rates. Pipeline transportation throughput increased in the 2016 Quarter versus the 2015 Quarter primarily due to higher pipeline volumes in southern California as a result of higher customer demand in the 2016 Quarter.

NINE MONTHS ENDEDSEPTEMBER 30, 2016 VERSUS NINE MONTHS ENDEDSEPTEMBER 30, 2015

OVERVIEW.Operating income for TLLP increased$69 million to $381 million in the 2016 Period largely due to increased storage revenue as a result of acquired assets.

REVENUES AND THROUGHPUT. Mainly due to acquired assets and higher throughput volumes, revenues increased$81 million to $901 million during the 2016 Period as compared to the 2015 Period. Average gas gathering throughput decreased, excluding the impact of the RGS deconsolidation, due to declines in natural gas production while average crude oil gathering throughput volumes increased as a result of projects to expand the pipeline gathering system. NGL and Fee-based processing throughput volumes decreased as a result of lower natural gas production being delivered to our processing systems with the financial results offset by improved utilization and increased processing rates. Pipeline transportation throughput increased in the 2016 Period versus the 2015 Period primarily due to stronger product demand and expansion projects adding new capabilities to our system.

OPERATING AND OTHER EXPENSES.Operating expenses increased$19 million during the 2016 Period primarily due to the reporting of gross operating expense related to our transactions with RGS for the 2016 Period that were previously eliminated in the 2015 Period.

MARKETING SEGMENT

We sell gasoline and diesel fuel in the western United States through branded and unbranded channels. Our branded operations include transportation fuel sales through retail stations and agreements with third-party dealers and distributors (or “Jobber/Dealer”). Our unbranded, or wholesale, operations include volumes sold through agreements with third-party distributors. Our branded and unbranded channels provide committed outlets for nearly all of the gasoline produced by our refineries. Our marketing segment includes a network of retail stations under the ARCO^®, Shell^®,Exxon^®, Mobil^®, USA Gasoline^TM, Rebel^TM and Tesoro^® brands.

OPERATIONAL DATA AND RESULTS. Management uses fuel margin per gallon to compare fuel results to other companies in the industry. There are a variety of ways to calculate fuel margin per gallon; different companies may calculate it in different ways. We calculate fuel margin per gallon by dividing fuel gross margin by fuel sales volumes. Investors and analysts may use fuel margin per gallon to help analyze and compare companies in the industry on the basis of operating performance. This financial measure should not be considered an alternative to revenues, segment operating income or any other measure of financial performance presented in accordance with U.S. GAAP. Fuel margin and fuel margin per gallon include the effect of intersegment purchases from the refining segment.

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MANAGEMENT’S DISCUSSION AND ANALYSIS

MARKETING SEGMENT OPERATING DATA AND RESULTS (dollars in millions, except cents per gallon)

	Three Months Ended September 30,						Nine Months Ended September 30,
	2016			2015			2016			2015
Marketing Revenues
Fuel	$	4,118		$	5,144		$	11,493		$	14,143
Other non-fuel	23			16			65			48
Total Revenues	4,141			5,160			11,558			14,191
Marketing Cost of Sales
Fuel	3,773			4,684			10,612			13,192
Other non-fuel	5			—			13			3
Total Cost of Sales	3,778			4,684			10,625			13,195
Marketing Gross Margin
Fuel	345			460			881			951
Other non-fuel	18			16			52			45
Total Gross Margin	363			476			933			996
Expenses
Operating expenses	73			82			221			223
Selling, general and administrative expenses	5			3			12			12
Depreciation and amortization expenses	12			11			36			34
Loss on asset disposals and impairments	—			1			3			3
Segment Operating Income	$	273		$	379		$	661		$	724
Fuel Sales (millions of gallons)	2,311			2,249			6,698			6,408
Fuel Margin (¢/gallon)		14.9	¢		20.5	¢		13.2	¢		14.8	¢
Number of Branded Stations (at the end of the period)
MSO operated							590			579
Jobber/Dealer operated							1,877			1,710
Total Stations							2,467			2,289

THREE MONTHS ENDEDSEPTEMBER 30, 2016 VERSUS THREE MONTHS ENDEDSEPTEMBER 30, 2015

OVERVIEW.Operating income decreased$106 million to $273 million during the 2016 Quarter as compared to the 2015 Quarter primarily from weaker fuel margins per gallon partially offset by higher fuel sales and lower expenses. Gross margin decreased$113 million to $363 million during the 2016 Quarter as compared to the 2015 Quarter as our fuel margin per gallon of 14.9 cents returned to the 5-year range. Fuel sales increased3% during the 2016 Quarter compared to the 2015 Quarter driven by stronger gasoline demand and growth in our portfolio of branded stations. Operating expenses were lower in the 2016 Quarter by $9 million primarily attributed to non-recurring point-of-sale system improvement costs in the 2015 Quarter and lower advertising spend in the 2016 Quarter from timing of advertisement production.

NINE MONTHS ENDEDSEPTEMBER 30, 2016 VERSUS NINE MONTHS ENDEDSEPTEMBER 30, 2015

OVERVIEW.Operating income decreased$63 million to $661 million during the 2016 Period as compared to the 2015 Period primarily from weaker fuel margins.Our gross margin decreased$63 million to $933 million during the 2016 Period as compared to the 2015 Period as fuel margins per gallon returned to normal 5-year range somewhat offset by higher sales. Fuel sales increased5% during the 2016 Period compared to the 2015 Period from continued strong demand fundamentals in the markets we serve and continued growth in our branded station network.

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MANAGEMENT’S DISCUSSION AND ANALYSIS

CAPITAL RESOURCES AND LIQUIDITY

OVERVIEW

We operate in an environment where our capital resources and liquidity are impacted by changes in the price of crude oil and refined products, availability of trade credit, market uncertainty and a variety of additional factors beyond our control. These factors include the level of consumer demand for transportation fuels, weather conditions, fluctuations in seasonal demand, governmental regulations, geo-political conditions and overall market and global economic conditions. See “Important Information Regarding Forward-Looking Statements” for further information related to risks and other factors. Future capital expenditures, as well as borrowings under our credit agreements and other sources of capital, may be affected by these conditions.

CAPITALIZATION

CAPITAL STRUCTURE (in millions)

	September 30, 2016			December 31, 2015
Debt, including current maturities:
Tesoro Senior Notes	$	1,225		$	1,225
Term Loan Facility (a)	65			—
Capital lease obligations and other	46			39
Tesoro Debt	1,336			1,264
TLLP Credit Facilities	400			555
TLLP Senior Notes	3,020			2,320
TLLP Capital lease obligations and other	8			8
TLLP Debt	3,428			2,883
Total Debt	4,764			4,147
Unamortized Issuance Costs (b)	(82		)	(74		)
Debt, Net of Unamortized Issuance Costs	4,682			4,073
Total Equity	8,195			7,740
Total Capitalization	$	12,877		$	11,813

(a) In connection with our acquisition of the Dickinson Refinery, as discussed in Note 3 to our condensed consolidated financial statements in Part I, Item 1, we assumed $66 million of term loan debt.

(b) The unamortized issuance costs for TLLP were $46 million and $39 million as of September 30, 2016 and December 31, 2015, respectively, which includes unamortized premiums of $4 million as of both September 30, 2016 and December 31, 2015.

RECONCILIATION OF CAPITALIZATION RATIO (in millions, except percentages)

	September 30, 2016			December 31, 2015
Tesoro Consolidated Debt (a)	$	4,682		$	4,073
TLLP Debt (a)	3,382			2,844
Tesoro Debt Excluding TLLP (a)	$	1,300		$	1,229
Tesoro Consolidated Equity	$	8,195		$	7,740
Noncontrolling Interest	2,695			2,527
Tesoro Stockholder’s Equity	$	5,500		$	5,213
Tesoro Debt to Capitalization Ratio (a)	36		%	34		%
Tesoro Debt to Capitalization Ratio Excluding TLLP and NCI (a)	19		%	19		%

(a) These amounts and calculations are shown net of unamortized issuance costs.

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MANAGEMENT’S DISCUSSION AND ANALYSIS

DEBT OVERVIEW AND AVAILABLE LIQUIDITY

Our debt, net of unamortized issuance costs, to capitalization ratio was 36% and 34% at September 30, 2016 and December 31, 2015, respectively. Our debt, net of unamortized issuance costs, to capitalization ratio, excluding TLLP, was 19%at both September 30, 2016 and December 31, 2015; this calculation excludes (a) TLLP total debt, which is net of unamortized issuance costs, of $3.4 billion and $2.8 billion at September 30, 2016 and December 31, 2015, respectively, and (b) noncontrolling interest of $2.7 billion and $2.5 billion at September 30, 2016 and December 31, 2015, respectively. TLLP’s debt is non-recourse to Tesoro, except for TLGP.

The Tesoro Corporation revolving credit facility (the “Revolving Credit Facility”) and senior notes each limit our ability, under certain circumstances, to make certain restricted payments (as defined in our debt agreements), which include dividends, purchases of our stock or voluntary prepayments of subordinate debt. The aggregate amount of restricted payments cannot exceed an amount defined in each of the debt agreements. The indentures for our senior notes also limit certain of our subsidiaries’ ability to make certain payments and distributions.

In addition to the covenants mentioned in Note 7, the Revolving Credit Facility also requires Tesoro to maintain (i) consolidated debt excluding certain subsidiaries at a level not to exceed 45% of total capitalization and (ii) consolidated EBITDA excluding certain subsidiaries to consolidated interest expense at a ratio no less than 3.50:1.00. At any time on or after achieving an investment grade rating, consolidated debt excluding certain subsidiaries must not exceed 60% of total capitalization. Many of the Revolving Credit Facility covenants either will no longer apply or become less restrictive if an investment grade rating from either Moody's Investors Service or S&P Global Ratings is achieved.

We do not believe that the limitations from our debt agreements will restrict our ability to pay dividends or buy back stock under our current programs. We were in compliance with our debt covenants as of and for the nine months ended September 30, 2016.

Our primary sources of liquidity are cash flows from operations with additional sources available under borrowing capacity from our revolving lines of credit. We ended the third quarter of 2016 with $1.4 billion of cash and cash equivalents and $400 million in borrowings under the TLLP Dropdown Credit Facility. There were no borrowings under the Tesoro Corporation Revolving Credit Facility or TLLP’s senior secured revolving credit agreement (the “TLLP Revolving Credit Facility”). We believe available capital resources will be adequate to meet our capital expenditure, working capital and debt service requirements.

AVAILABLE CAPACITY UNDER OUR CREDIT FACILITIES (in millions)

	Total Capacity		Amount Borrowed as of September 30, 2016		Outstanding Letters of Credit		Available Capacity		Expiration
Tesoro Corporation Revolving Credit Facility	$	2,000	$	—	$	4	$	1,996	September 30, 2020
TLLP Revolving Credit Facility	600		—		—		600		January 29, 2021
TLLP Dropdown Credit Facility	1,000		400		—		600		January 29, 2021
Letter of Credit Facilities (a)	1,555		—		44		1,511
Total Credit Facilities	$	5,155	$	400	$	48	$	4,707

(a) Letters of credit outstanding under these agreements incur fees ranging from 0.40% to 0.90% and are secured by the crude oil inventories for which they are issued. Capacity under these letter of credit agreements is available on an uncommitted basis and can be terminated by either party at any time.

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MANAGEMENT’S DISCUSSION AND ANALYSIS

EXPENSES AND FEES OF OUR CREDIT FACILITIES

Credit Facility	30 Day Eurodollar (LIBOR) Rate at September 30, 2016	Eurodollar Margin	Base Rate	Base Rate Margin	Commitment Fee (unused portion)
Tesoro Corporation Revolving Credit Facility    ($2.0 billion)	0.53%	1.75%	3.50%	0.75%	0.30%
TLLP Revolving Credit Facility ($600 million)	0.53%	2.00%	3.50%	1.00%	0.38%
TLLP Dropdown Credit Facility ($1.0 billion) (a)	0.53%	2.01%	3.50%	1.01%	0.38%

(a) The weighted average interest rate for borrowings under the secured TLLP Dropdown Credit Facility was 2.54% at September 30, 2016.

SOURCES AND USES OF CASH

Working capital (excluding cash) increased$190 million in the 2016 Period primarily related to the timing of our receivables, which was offset by the timing of our payments for crude oil and refined product purchases and utilization of our inventories.

COMPONENTS OF CASH FLOWS (in millions)

	Nine Months Ended September 30,
	2016			2015
Cash Flows From (Used in):
Operating activities	$	1,201		$	1,847
Investing activities	(1,020		)	(783		)
Financing activities	264			(1,105		)
Increase (Decrease) in Cash and Cash Equivalents	$	445		$	(41	)

OPERATING ACTIVITIES. Net cashfrom operating activities during the 2016 Period totaled $1.2 billion as compared to $1.8 billion in the 2015 Period. The decrease in cash from operations was primarily driven by the decrease in net earnings of $848 million partially offset by the change in working capital in the 2016 Period.

INVESTING ACTIVITIES.Net cash used in investing activities increased$237 million to $1.0 billion in the 2016 Period as compared to $783 million in the 2015 Period, primarily due to the acquisitions in the 2016 Period partially offset by a decrease in capital expenditures.

FINANCING ACTIVITIES. Net cash from financing activities during the 2016 Period totaled $264 million as compared to net cash used in financing activities during the 2015 Period, which totaled $1.1 billion. The $1.4 billion change is primarily attributable to TLLP’s financing activities during the 2016 Period including senior note issuances of $700 million and $293 million more in net proceeds from issuances of common units. In addition, TSO spent $252 million less for repurchases of common stock in the 2016 Period compared to the 2015 Period. The change in other financing activities of $79 million partially offset these sources of cash.

CAPITAL EXPENDITURES

Our capital spending reflects the Company’s emphasis on long-term strategic priorities including continued focus on safe, compliant, reliable operations and value-driven growth. Growth capital expenditures include purchases or construction of new assets and expansion of existing facilities or services that increase throughput capacity or operational capabilities of our assets. Maintenance capital expenditures include projects to extend the life or maintain equipment reliability and integrity. Tesoro regulatory capital expenditures include projects to attain or maintain compliance with regulatory standards. We monitor the effectiveness of our investments in capital projects as part of our focus on financial discipline and continuous improvement. In addition, for major capital projects, we routinely review project assumptions and project execution as well as obtain third-party evaluations to assist in improving our project planning and execution. Actual and estimated amounts described below include amounts representing capitalized interest and labor. Tesoro primarily funds capital expenditures with cash generated from operations. TLLP primarily funds its capital expenditures with cash generated from operations, reimbursements for certain growth

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MANAGEMENT’S DISCUSSION AND ANALYSIS

and maintenance capital expenditures, borrowings under the TLLP Revolving Credit Facility and TLLP Dropdown Credit Facility and issuances of additional TLLP debt and equity securities, as needed.

2016 CAPITAL EXPENDITURES BY PROJECT CATEGORY (in millions)

	Three Months Ended September 30, 2016				Nine Months Ended September 30, 2016
Project Category	Tesoro (a)		TLLP		Tesoro (a)		TLLP
Growth	$	69	$	26	$	207	$	89
Maintenance	79		16		187		36
Regulatory	37		—		105		—
Total 2016 Capital Expenditures	$	185	$	42	$	499	$	125

(a) Tesoro capital expenditures exclude TLLP.

During the second quarter of 2016, the Company revised the 2016 capital program expectations to approximately $900 million, which includes approximately $700 million for Tesoro and approximately $200 million for TLLP. This is a reduction of approximately $600 million from the Company’s earlier expectations of approximately $1.5 billion. The reduction is primarily attributable to reduced spending as a result of permit timing changes for the Los Angeles Refinery Integration Project and permit timing changes as a result of the additional environmental impact studies required related to the Clean Product Upgrade Project. Tesoro still expects to complete these projects over the next few years, but at a slower pace than previously planned. These anticipated reductions in 2016 capital expenditures are not expected to impact our current year business improvement targets. TLLP’s revised capital spending estimate reflects the deferral of several discretionary projects and delays in several growth projects in both the Rockies and Bakken regions attributed to low commodity prices and our current view of spending related to the Los Angeles Refinery Interconnect Pipeline System.

MAJOR PROJECTS. Cost estimates for projects currently in process or under development are subject to further review, analysis and permitting requirements resulting in revisions to our current spend estimates.

MAJOR PROJECTS IN PROCESS OR UNDER DEVELOPMENT (in millions)

Major Projects	Total Project Expected Capital Expenditures		Actual 2016 Capital Expenditures
Los Angeles Refinery Integration and Compliance Project (a)	$	510	$	76
Mixed Xylenes Project (b)	410		23
Enterprise Resource Planning Project (c)	210		54
Vancouver Energy Terminal Project (d)	210		3
Avon Wharf Project (e)	190		51
Naphtha Isomerization Project (f)	170		21

(a) The integration and compliance project at the Los Angeles refinery is designed to improve the flexibility of gasoline and diesel yields and reduce carbon dioxide emissions. The proposed project, subject to project scoping, engineering and regulatory approval, includes decommissioning the fluid catalytic cracking unit at our Wilmington refinery. Of the total expected capital expenditure related to this project, we anticipate a portion may be incurred and paid by TLLP.

(b) The Mixed Xylenes Project is a portion of the Clean Products Upgrade Project at our Anacortes, Washington refinery that will help diversify our product mix through the extraction of existing mixed xylene from gasoline and improve our capability to deliver cleaner local transportation fuels and global feedstocks, primarily for polyester. The Mixed Xylenes Project and its components remain subject to final board and regulatory approval.

(c) The Enterprise Resource Planning Project will simplify business processes by implementing a standardized and scalable platform across the Company to transform our business information and technology systems and to further streamline our operations, reduce costs and provide for future growth. We expect this project to be a complex, multi-year process that will require significant investments in software and technology. We completed the design phase in October 2016 and have transitioned to the build phase of this process.

(d) Effective September 1, 2016, we became majority owner of Vancouver Energy and as a result are reporting the total project costs above. For further discussion and the status of the related construction project, refer to the Vancouver Energy discussion in the “Business Strategy and Overview” section.

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MANAGEMENT’S DISCUSSION AND ANALYSIS

(e) The regulatory and compliance project for the Avon Wharf in Martinez, California is required under the California building code for Marine Oil Terminal Engineering and Maintenance Standards (“MOTEMS”). The project is nearly complete and has replaced the marine berth with a MOTEMS compliant structure that will improve clean product movements and has received all regulatory approval and permits.

(f) The Naptha Isomerization Project is a portion of the Clean Products Upgrade Project at our Anacortes, Washington refinery that will improve our capability to deliver cleaner local transportation fuels. The project is progressing with construction and is designed to lower the sulfur content in gasoline, which aligns with the new Federal Tier 3 standards.

On September 29, 2016, the U.S. Court for the Western District of Texas entered the Consent Decree in final settlement of Environmental Protection Agency’s (“EPA”) allegations that we violated certain Clean Air Act regulations. Through September 30, 2016, Tesoro has incurred or accrued $312 million of expenditures for capital projects in response to the Consent Decree including $46 million related to our former Hawaii refinery. Our expected capital expenditures for 2016 contain $80 million, including amounts to be capitalized for interest and labor, for these projects. Additionally, we expect to spend approximately $90 million, including amounts to be capitalized for interest and labor, for all remaining capital expenditures between 2017 and 2019 in response to the Consent Decree.

TURNAROUNDS AND BRANDING CHARGES

In addition to our capital spending program, we have expenditures for turnarounds, catalyst and branding charges.

TURNAROUNDS AND BRANDING EXPENDITURES (in millions)

	Nine Months Ended September 30, 2016		2016 Expected
Turnarounds and catalysts	$	233	$	320
Branding charges	55		80
Total expenditures	$	288	$	400

SIGNIFICANT PLANNED TURNAROUNDS BY LOCATION

	Los Angeles	Martinez	Anacortes	Kenai	Mandan	Salt Lake City
Planned 2016	●	●		●	●	●
Completed during 2016	●	●		●

SHARE REPURCHASES

On October 28, 2015, our Board of Directors (the “Board”) authorized a new $1.0 billion share repurchase program to become effective upon the full completion of our current $1.0 billion share repurchase authorization. With the new program, we have $1.1 billion remaining under our authorized programs as of September 30, 2016. In addition, we are authorized by our Board to purchase shares of our common stock in open market transactions to offset the dilutive effect of stock-based compensation awards and to meet our obligations under employee benefit and compensation plans, including the exercise of stock options and vesting of restricted stock and to fulfill other stock compensation requirements. The Board’s authorization has no time limit and may be suspended or discontinued at any time. During the nine months ended September 30, 2016 and 2015, we executed approximately 3.2 million and 5.5 million of share repurchases of our common stock for approximately $250 million and $494 million, respectively.

CASH DIVIDENDS

We paid cash dividends totaling $65 million and $186 million for the three and nine months ended September 30, 2016, respectively, based on a $0.55 per share and $0.50 per share quarterly cash dividend on common stock in the third and first two quarters, respectively. We paid cash dividends totaling $62 million and $169 million for the three and nine months ended September 30, 2015, respectively, based on a $0.50 per share and $0.425 per share quarterly cash dividend on common stock in the third and first two quarters, respectively. On October 31, 2016, our Board declared a cash dividend of $0.55 per share payable on December 15, 2016 to shareholders of record on November 30, 2016.

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MANAGEMENT’S DISCUSSION AND ANALYSIS

OFF-BALANCE SHEET ARRANGEMENTS

We have not entered into any transactions, agreements or other contractual arrangements that would result in off-balance sheet liabilities.

ENVIRONMENTAL AND OTHER MATTERS

We are a party to various litigation and contingent loss situations, including environmental and income tax matters, arising in the ordinary course of business. Although we cannot predict the ultimate outcomes of these matters with certainty, we have accrued for the estimated liabilities when appropriate. We believe that the outcome of these matters will not have a material impact on our liquidity or financial position, although the resolution of certain of these matters could have a material impact on our interim or annual results of operations. Additionally, if applicable, we accrue receivables for probable third-party recoveries.

ENVIRONMENTAL LAWS AND REGULATIONS.We are subject to extensive federal, state and local environmental laws and regulations. These laws, which change frequently, regulate the discharge of materials into the environment and may require us to remove or mitigate the environmental effects of the disposal or release of petroleum or chemical substances at various sites, install additional controls or make other modifications to certain emission sources, equipment or facilities. See further discussion in Part II, Item 7 of our Annual Report on Form 10-K for the year ended December 31, 2015.

ENVIRONMENTAL LIABILITIES.We are incurring and expect to continue to incur expenses for environmental remediation liabilities at a number of currently and previously owned or operated refining, pipeline, terminal and retail station properties. We have accrued liabilities totaling $212 million and $255 million, including $18 million and $33 million for TLLP, at September 30, 2016 and December 31, 2015, respectively.

On October 17, 2016, the appellate court affirmed the July 10, 2015 order issued by the federal trial court denying coverage pursuant to an insurance policy for environmental remediation liabilities at our Martinez refinery. The insurer had filed a declaratory relief action challenging coverage of the primary policy assigned to us when we acquired the refinery. The primary and excess policies together provided for coverage up to $190 million for expenditures in excess of $50 million in self–insurance. The court's decision effectively denies coverage under both policies. While these environmental remediation liabilities are included in our accruals above, we have not recognized possible insurance recoveries under the policies. We are currently evaluating whether to pursue further challenging the decision.

OTHER MATTERS

In the ordinary course of business, we become party to lawsuits, administrative proceedings and governmental investigations, including environmental, regulatory and other matters. Large, and sometimes unspecified, damages or penalties may be sought from us in some matters. We have not established accruals for these matters unless a loss is probable, and the amount of loss is currently estimable.

ENVIRONMENTAL.On September 29, 2016, the U.S. Court for the Western District of Texas entered the Consent Decree in final settlement of EPA’s allegations that we violated certain Clean Air Act regulations at our Alaska, Washington, Martinez, North Dakota and Utah refineries. This settlement resolves a notice of violation (“NOV”) received in March 2011 from the EPA alleging violations of Title V of the Clean Air Act at our Alaska refinery, which arose from a 2007 state of Alaska inspection and inspections by the EPA in 2008 and 2010 and NOVs received in 2005 and 2008 alleging violations of the Clean Air Act at our Washington refinery. The settlement also resolves similar allegations relating to our former Hawaii refinery, which we sold in September 2013. See Part II, Item I and Note 9 to our condensed consolidated financial statements in Part I, Item 1, and read in conjunction with our Annual Report on Form 10-K for the year ended December 31, 2015, for additional information on our environmental contingencies.

On October 26, 2016, the Utah Supreme Court rejected the Utah Physicians for a Healthy Environment’s and the Utah Chapter of the Sierra Club’s (“Petitioners”) challenge of an air permit issued by the Utah Department of Environmental Quality (“UDEQ”) to our Salt Lake City refinery in September 2012. Petitioners had filed a Request for Agency Action (the “Request”) with UDEQ challenging UDEQ’s permitting of our refinery conversion project alleging that the permit does not conform to the requirements of the Clean Air Act. After proceedings before an administrative law judge and the Executive Director of UDEQ’s subsequent dismissal of Petitioners’ Request, Petitioners filed a petition for review with the Utah Court of Appeals in December 2014, and the Court of Appeals certified the case to the Utah Supreme Court. While Petitioners have until November 9, 2016 to file a challenge to the Utah Supreme Court’s decision, we do not believe the final resolution of this matter will have a material adverse impact on our liquidity, financial position, or results of operations.

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MANAGEMENT’S DISCUSSION AND ANALYSIS

TAX. We are subject to extensive federal, state and foreign tax laws and regulations. Newly enacted tax laws and regulations, and changes in existing tax laws and regulations, could result in increased expenditures in the future. See Note 9 to our condensed consolidated financial statements for additional information on our tax matters.

IMPORTANT INFORMATION REGARDING FORWARD-LOOKING STATEMENTS

This Quarterly Report on Form 10-Q (including information incorporated by reference) includes and references “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. These statements relate to, among other things, expectations regarding margins, revenues, cash flows, capital expenditures, turnaround expenses and other financial items. These statements also relate to our business strategy, goals and expectations concerning our market position, future operations, margins and profitability. We have used the words “anticipate,” “believe,” “could,” “estimate,” “expect,” “intend,” “may,” “plan,” “predict,” “project,” “will,” “would” and similar terms and phrases to identify forward-looking statements in this Quarterly Report on Form 10-Q, which speak only as of the date the statements were made.

Although we believe the assumptions upon which these forward-looking statements are based are reasonable, any of these assumptions could prove to be inaccurate and the forward-looking statements based on these assumptions could be incorrect.

The matters discussed in these forward-looking statements are subject to risks, uncertainties and other factors that could cause actual results and trends to differ materially from those made, projected, or implied in or by the forward-looking statements depending on a variety of uncertainties or other factors including, but not limited to:

• the constantly changing margin between the price we pay for crude oil and other refinery feedstocks as well as RINs and environmental credits, and the prices at which we are able to sell refined products;

• our ability to deliver anticipated annual improvements to operating income and the impact of the commodity price environment on our targeted improvements;

• changes in the expected value of and benefits derived from acquisitions;

• changes in global economic conditions and the effects of the global economic downturn on our business, especially in California, and the business of our suppliers, customers, business partners and credit lenders;

• changes in fuel and utility costs for our facilities;

• changes in the cost or availability of third-party vessels, pipelines and other means of transporting crude oil feedstocks and refined products;

• regulatory and other requirements concerning the transportation of crude oil, particularly from the Bakken area;

• changes in the carrying costs of our inventory;

• the timing and extent of changes in commodity prices and underlying demand for our refined products, natural gas and NGLs;

• the availability and costs of crude oil, other refinery feedstocks, refined products and RINs;

• changes in our cash flow from operations;

• earthquakes or other natural disasters affecting operations;

• direct or indirect effects on our business resulting from actual or threatened terrorist or activist incidents, cyber-security breaches or acts of war;

• weather conditions affecting our operations or the areas in which our refined products are marketed;

• actions of customers and competitors;

• state and federal environmental, economic, health and safety, energy and other policies and regulations, including those related to climate change and any changes therein, and any legal or regulatory investigations, delays, compliance costs or other factors beyond our control;

• delays in obtaining necessary approvals and permits;

• adverse rulings, judgments, or settlements in litigation or other legal or tax matters, including unexpected environmental remediation costs in excess of any reserves;

• operational hazards inherent in refining operations and in transporting and storing crude oil and refined products;

• changes in our credit profile;

• changes in capital requirements or in execution of planned capital projects;

• disruptions due to equipment interruption or failure at our facilities or third-party facilities;

• seasonal variations in demand for refined products and natural gas;

54| Tesoro Corporation

MANAGEMENT’S DISCUSSION AND ANALYSIS

• risks related to labor relations and workplace safety; and

• political developments.

Many of these factors, as well as other factors, are described in our filings with the Securities and Exchange Commission. All future written and oral forward-looking statements attributable to us or persons acting on our behalf are expressly qualified in their entirety by the previous statements. The forward-looking statements in this Quarterly Report on Form 10-Q speak only as of the date of this Quarterly Report on Form 10-Q. We undertake no obligation to revise or update any forward-looking statements as a result of new information, future events or otherwise.

ITEM 3. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

RISK MANAGEMENT

We have established a risk committee comprised of senior level leadership from our financial, strategic, governance, administrative and operational functions. The risk committee’s responsibilities include the performance of an annual review to assess and prioritize the Company’s risks in coordination with our subject matter experts, assessment of the status and effectiveness of risk prevention and mitigation activities, identify emerging risks and facilitating management’s development of risk assessment and management practices. The risk committee is also responsible to assess and advise management on the Company’s system of controls to ensure policies and procedures are properly followed and appropriate accountability is present. See further discussion in Part II, Item 7A of our Annual Report on Form 10-K for the year ended December 31, 2015.

COMMODITY PRICE RISKS

Our primary source of market risk is the difference between the sale prices for our refined products and the purchase prices for crude oil and other feedstocks. Refined product prices are directly influenced by the price of crude oil. Our earnings and cash flows from operations depend on the margin, relative to fixed and variable expenses (including the costs of crude oil and other feedstocks), at which we are able to sell our refined products. The prices of crude oil and refined products fluctuate substantially and depend on many factors including the global supply and demand for crude oil and refined products. This demand is impacted by changes in the global economy, the level of foreign and domestic production of crude oil and refined products, geo-political conditions, the availability of imports of crude oil and refined products, the relative strength of the U.S. dollar, the marketing of alternative and competing fuels and the impact of government regulations. Our refined product sale prices are also affected by local factors such as local market conditions and the level of operations of other suppliers in our markets.

In most cases, an increase or decrease in the price of crude oil results in a corresponding increase or decrease in the price of gasoline and other refined products. The timing, direction and the overall change in refined product prices versus crude oil prices could have a significant impact on our profit margins, earnings and cash flows. Assuming all other factors remained constant, a $1 per barrel change in average gross refining margins, based on our quarter-to-date average throughput of 873 thousand barrels per day, would change annualized pre-tax operating income by approximately $320 million. This analysis may differ from actual results.

We maintain inventories of crude oil, intermediate products and refined products, the values of which are subject to fluctuations in market prices. Our inventories of refinery feedstocks and refined products totaled 42 million barrels and 48 million barrels at September 30, 2016 and December 31, 2015, respectively. Since the replacement cost of our inventories declined to a level below our average cost, we recorded a LCM reserve of $123 millionand $359 million as of September 30, 2016 and December 31, 2015, respectively.

We use non-trading derivative instruments to manage exposure to commodity price risks associated with the purchase or sale of crude oil and finished products and inventories above or below our target levels. We also use these instruments to manage the impact of market volatility and arbitrage opportunities for crude oil where the price of crude oil is higher in the future than the current spot price. For the purchase or sale of crude oil and finished products to be used in our normal operations, we may enter into physical commodity forward purchase and sale contracts (“Forward Contracts”), which are not typically classified and reported as derivatives for accounting purposes. The gains or losses associated with these Forward Contracts are recognized as incurred in our financial statements separate from the gains or losses associated with other derivative instruments reported below and in Note 5 to our financial statements in Item 1.

September 30, 2016 | 55

QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

Also, we may enter into derivative contracts such as exchange-traded futures, over-the-counter swaps, options and over-the-counter options, most of which had remaining durations of less than one year as of September 30, 2016, to economically hedge price risk associated with our physical commodity Forward Contracts or to take advantage of other market opportunities. We mark-to-market these derivative instruments each period during the contract term, which can create timing differences for gain or loss recognition in our financial statements. The derivative gains or losses presented below do not reflect the realized losses or gains, respectively, from the settlement of our physical commodity transactions. Both the derivative and the physical commodity Forward Contracts’ gains and losses are reflected in our gross refining margin in the refining segment. We evaluate our performance based on all contract types available to manage our risk, which includes contracts that may or may not be classified and reported as derivatives for accounting purposes.

We believe the governance structure that we have in place is adequate given the size and sophistication of our commodity optimization, inventory management and trading activities. Our governance over commodity activities includes regular monitoring of the performance of our risk management strategies and limits over dollar and volume based transactional authority, commodity position, aggregate spread, stop-loss and value-at-risk. Performance against our strategies and authorized limits is monitored daily via position reports and profit and loss analysis and is reviewed on a regular basis, at least monthly, by our risk committee.

Net earnings during the 2016 Quarter and 2015 Quarter included a net gain of $19 million and $153 million, respectively, on our commodity derivative positions.

COMPOSITION OF NET GAIN ON OUR COMMODITY DERIVATIVE POSITIONS (in millions)

	Three Months Ended September 30,
	2016			2015
Unrealized loss carried on open derivative positions from prior period	$	24		$	13
Realized gain (loss) on settled derivative positions	(5		)	104
Unrealized gain on open net derivative positions	—			36
Net Gain	$	19		$	153

Our open derivative positions at September 30, 2016 will expire at various times through 2018. We prepared a sensitivity analysis to estimate our exposure to market risk associated with our derivative instruments. This analysis may differ from actual results. Based on our open net positions at September 30, 2016, a 1% change in quoted market prices of our derivative instruments, assuming all other factors remain constant, could change the fair value of our derivative instruments and pre-tax operating income by approximately $1 million.

COUNTER PARTY CREDIT RISK

We have exposure to concentrations of credit risk related to the ability of our counterparties to meet their contractual payment obligations, and the potential non-performance of counterparties to deliver contracted commodities or services at the contracted price. Customer concentrations within the refining industry may affect our overall exposure to counterparty risk because these customers may be similarly impacted by changes in economic or other conditions. See further discussion in Part II, Item 7A of our Annual Report on Form 10-K for the year ended December 31, 2015.

INTEREST RATE RISK

Our use of fixed or variable-rate debt directly exposes us to interest rate risk. Fixed rate debt, such as our senior notes, exposes us to changes in the fair value of our debt due to changes in market interest rates. Fixed rate debt also exposes us to the risk that we may need to refinance maturing debt with new debt at higher rates, or that we may be obligated to pay rates higher than the current market. Variable-rate debt, such as borrowings under our Revolving Credit Facility, exposes us to short-term changes in market rates that impact our interest expense. The carrying values of our debt were approximately $4.8 billion and $4.1 billion at September 30, 2016 and December 31, 2015, respectively, and the fair values of our debt were approximately $5.0 billion and $4.1 billion at September 30, 2016 and December 31, 2015, respectively. These carrying and fair values of our debt do not consider the unamortized issuance costs, which are netted against our total debt.

56| Tesoro Corporation

QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

We currently do not use interest rate swaps to manage our exposure to interest rate risk; however, we continue to monitor the market and our exposure, and in the future, we may enter into these transactions to mitigate risk. We believe in the short-term we have acceptable interest rate risk and continue to monitor the risk on our long-term obligations. There were no borrowings outstanding under the Revolving Credit Facility or TLLP Revolving Credit Facility and $400 million borrowings outstanding under the TLLP Dropdown Credit Facility as of September 30, 2016.

ITEM 4. CONTROLS AND PROCEDURES

Our disclosure controls and procedures are designed to provide reasonable assurance that the information that we are required to disclose in reports we file under the Securities Exchange Act of 1934, as amended (“the Exchange Act”), is accumulated and appropriately communicated to management. There have been no significant changes in our internal controls over financial reporting (as defined by applicable Securities and Exchange Commission rules) during the quarter ended September 30, 2016 that have materially affected or are reasonably likely to materially affect these controls.

We carried out an evaluation required by Rule 13a-15(b) of the Exchange Act, under the supervision and with the participation of our management, including the Chief Executive Officer and Chief Financial Officer, of the effectiveness of the design and operation of our disclosure controls and procedures at the end of the reporting period. Based on that evaluation, the Chief Executive Officer and Chief Financial Officer concluded that our disclosure controls and procedures are effective.

September 30, 2016 | 57

LEGAL PROCEEDINGS AND RISK FACTORS

PART II — OTHER INFORMATION

ITEM 1. LEGAL PROCEEDINGS

In the ordinary course of business, we may become party to lawsuits, administrative proceedings and governmental investigations, including environmental, regulatory and other matters. The information below describes new proceedings or material developments in proceedings that we previously reported in our Annual Report on Form 10-K for the year ended December 31, 2015 or our Quarterly Reports on Form 10-Q for the quarters ended March 31, 2016 or June 30, 2016. Although we cannot provide assurance, we believe that an adverse resolution of such proceedings would not have a material impact on our liquidity, consolidated financial position, or consolidated results of operations.

On September 29, 2016, the U.S. Court for the Western District of Texas entered the Consent Decree in final settlement of the Environmental Protection Agency’s (“EPA”) allegations that we violated certain Clean Air Act regulations at our Alaska, Washington, Martinez, North Dakota and Utah refineries. This settlement resolves a notice of violation (“NOV”) received in March 2011 from the EPA alleging violations of Title V of the Clean Air Act at our Alaska refinery, which arose from a 2007 state of Alaska inspection and inspections by the EPA in 2008 and 2010 and NOVs received in 2005 and 2008 alleging violations of the Clean Air Act at our Washington refinery. The settlement also resolves similar allegations relating to our former Hawaii refinery, which we sold in September 2013. The terms of the Consent Decree require Tesoro to spend material capital expenditures. However, the majority of these expenditures have been spent in prior years or are budgeted in 2016. The remaining expenditures will be primarily spent in 2017 with additional amounts through 2019. See Note 9 to our condensed consolidated financial statements in Part I, Item 1 and the Capital Resources and Liquidity in Part I, Item 2 for further discussions. The remaining expenditures associated with the Consent Decree will not have a material impact on our liquidity, financial position or results of operations. The Consent Decree also required we pay a civil penalty totaling $10.45 million plus accrued interest. The civil penalty, for which $10 million was previously accrued in 2014, was paid in October 2016.

On August 8, 2016, we received an offer to settle two allegations from CARB related to reports filed by our Los Angeles refinery in 2013 and 2014 under California’s GHG Mandatory Reporting Program. While we are actively discussing a settlement of the allegations with CARB, the outcome will not have a material impact on our liquidity, financial positions or results of operations.

On September 8, 2016, a Consent Agreement and Final Order was finalized with the EPA resolving an Administrative Complaint that was filed on April 14, 2016, based upon a NOV we received on November 20, 2013 from the EPA. The NOV was issued as a result of the EPA’s investigation of our Washington refinery in 2011 following the April 2010 fire in the naphtha hydrotreater unit. The EPA alleged 46 violations of the Clean Air Act Risk Management Plan requirements in the NOV. The final resolution of this matter did not have a material impact on our liquidity, financial position or results of operations.

On October 14, 2016, we received an offer to settle three NOVs from the County of San Diego, Department of Environmental Health. The NOVs were issued after the inspection of three marketing sites between December 2014 and June 2015 and allege improper operation of underground storage tank leak detection equipment as required by the California Health and Safety Code. While we are currently evaluating the allegations and considering the settlement offer, the final resolution of this matter will not have a material impact on our liquidity, financial position or results of operations.

ITEM 1A. RISK FACTORS

There have been no significant changes from the risk factors previously disclosed in Item 1A of our 2015 Annual Report on Form 10-K.

58| Tesoro Corporation

UNREGISTERED SALES OF EQUITY SECURITIES AND OTHER INFORMATION

ITEM 2. UNREGISTERED SALES OF EQUITY SECURITIES AND USE OF PROCEEDS

PURCHASES BY TESORO CORPORATION OF ITS COMMON STOCK

Period	Total Number of Shares Purchased (a)	Average Price Paid per Share		Total Number of Shares Purchased as Part of Publicly Announced Plans or Programs (b)	Approximate Dollar Value of Shares that May Yet Be Purchased Remaining at Period End Under the Plans or Programs (In Millions) (b)
July 2016	—	$	—	—	$	1,256
August 2016	754,716	$	75.53	749,692	$	1,199
September 2016	1,080,743	$	79.56	1,077,591	$	1,114
Total	1,835,459			1,827,283

(a) Includes 8,176shares acquired from employees during the third quarter of 2016 to satisfy tax withholding obligations in connection with the vesting of performance share awards, market stock units and restricted stock issued to them.

(b) Our Board of Directors (“Board”) authorized a $1.0 billion share repurchase program in July 2014. Under the program, management is permitted to purchase Tesoro common stock at its discretion in the open market. On October 28, 2015, our Board authorized a new $1.0 billion share repurchase program to become effective upon the full completion of our current $1.0 billion share repurchase authorization. The authorization has no time limit and may be suspended or discontinued at any time.

ITEM 5. OTHER INFORMATION

As we previously disclosed in our Current Report on Form 8-K filed with the SEC on October 25, 2016, our Board of Directors approved amendments to our Amended and Restated Bylaws that, among other things, implement “proxy access,” allowing eligible stockholders to include their own nominees for director in our proxy materials along with the Board-nominated candidates. The Amended and Restated Bylaws are effective as of November 1, 2016.

Pursuant to these amendments, a stockholder, or group of twenty or fewer stockholders, owning at least 3% of Tesoro’s outstanding common stock continuously for at least three years, may nominate and include in our proxy materials director nominees constituting up to the greater of two directors or 20% of the number of directors serving on the Board, provided that the stockholder(s) and the nominee(s) satisfy the requirements specified in the Amended and Restated Bylaws.

ITEM 6. EXHIBITS

(a) Exhibits

Exhibit Number	Description of Exhibit
2.1	Contribution, Conveyance and Assumption Agreement, dated as of July 1, 2016, among Tesoro Logistics LP, Tesoro Logistics GP, LLC, Tesoro Logistics Operations LLC, Tesoro Alaska Company LLC and Tesoro Corporation (incorporated by reference herein to Exhibit 2.1 to the Company’s Current Report on Form 8-K filed on July 7, 2016, File no. 1-3473).
*2.2	Revision to the Contribution, Conveyance and Assumption Agreement, dated as of July 27, 2016, among Tesoro Logistics LP, Tesoro Logistics GP, LLC, Tesoro Logistics Operations LLC, Tesoro Alaska Company LLC and Tesoro Corporation.
3.1	Amended and restated by-laws of Tesoro Corporation effective November 1, 2016 (incorporated by reference herein to Exhibit 3.1 to the Company’s Current Report on Form 8-K filed on October 25, 2016, File no. 1-3473).
4.1	Supplemental Indenture, dated as ofJanuary 7, 2016, among Tesoro Corporation, Tesoro Great Plains Holdings Company LLC, as new guarantor, and U.S. Bank National Association, as trustee, relating to the 4.250% Senior Notes due 2017 and the 5.375% Senior Notes due 2022 (incorporated by reference herein to Exhibit 4.1 to the Company’s Quarterly Report on Form 10-Q for the quarterly period ended March 31, 2016, File No. 1-3473).
4.2	Supplemental Indenture, dated as ofJanuary 7, 2016, among Tesoro Corporation, Tesoro Great Plains Holdings Company LLC, as new guarantor, and U.S. Bank National Association, as trustee, relating to the 5.125% Senior Notes due 2024 (incorporated by reference herein to Exhibit 4.2 to the Company’s Quarterly Report on Form 10-Q for the quarterly period ended March 31, 2016, File No. 1-3473).

September 30, 2016 | 59

EXHIBITS

Exhibit Number	Description of Exhibit
4.3	Supplemental Indenture, dated as of April 26, 2016, among Tesoro Corporation, certain subsidiary guarantors, and U.S. Bank National Association, as trustee, relating to the 4.250% Senior Notes due 2017 and the 5.375% Senior Notes due 2022 (incorporated by reference herein to Exhibit 4.3 to the Company’s Quarterly Report on Form 10-Q for the quarterly period ended June 30, 2016, File No. 1-3473).
4.4	Supplemental Indenture, dated as of April 26, 2016, among Tesoro Corporation, certain subsidiary guarantors, and U.S. Bank National Association, as trustee, relating to the 5.125% Senior Notes due 2024 (incorporated by reference herein to Exhibit 4.4 to the Company’s Quarterly Report on Form 10-Q for the quarterly period ended June 30, 2016, File No. 1-3473).
4.5	Fifth Supplemental Indenture, dated as of May 12, 2016, among Tesoro Logistics LP, Tesoro Logistics Finance Corp., the guarantors named therein and U.S. Bank National Association, as trustee, relating to the 6.125% Senior Notes due 2021 (incorporated by reference herein to Exhibit 4.2 to the Company’s Current Report on Form 8-K filed on May 17, 2016, File No. 1-3473).
4.6	Indenture (including form of note), dated as of May 12, 2016, among Tesoro Logistics LP, Tesoro Logistics Finance Corp., the guarantors named therein and U.S. Bank National Association, as trustee, relating to the 6.375% Senior Notes due 2024 (incorporated by reference herein to Exhibit 4.3 to the Company’s Current Report on Form 8-K filed on May 17, 2016, File No. 1-3473).
10.1	Ground Lease, dated as of July 1, 2016, between Tesoro Alaska Company LLC and Tesoro Logistics Operations LLC (incorporated by reference herein to Exhibit 10.1 to the Company’s Current Report on Form 8-K filed on July 7, 2016, File No. 1-3473).
10.2	Second Amended and Restated Schedules to the Third Amended and Restated Omnibus Agreement, dated as of July 1, 2016, among Tesoro Logistics LP, Tesoro Logistics GP, LLC, Tesoro Corporation, Tesoro Refining & Marketing Company LLC, Tesoro Alaska Company LLC and Tesoro Companies, Inc. (incorporated by reference herein to Exhibit 10.2 to the Company’s Current Report on Form 8-K filed on July 7, 2016, File No. 1-3473).
10.3	Kenai Storage Services Agreement, dated as of July 1, 2016, among Tesoro Alaska Company LLC, Tesoro Logistics Operations LLC, Tesoro Logistics GP, LLC and Tesoro Logistics LP (incorporated by reference herein to Exhibit 10.3 to the Company’s Current Report on Form 8-K filed on July 7, 2016, File No. 1-3473).
10.4	Amendment No.1 to the Second Amended and Restated Master Terminalling and Service Agreement, dated as of September 16, 2016, among Tesoro Refining & Marketing Company, LLC, Tesoro Alaska Company LLC, and Tesoro Logistics Operations LLC (incorporated by reference herein to Exhibit 10.1 to the Company’s Current Report on Form 8-K filed on September 22, 2016, File No. 1-3473).
10.5	Alaska Terminalling Services Agreement, dated as of September 16, 2016, among Tesoro Alaska Company LLC, Tesoro Logistics Operations LLC, Tesoro Alaska Terminals, LLC, Tesoro Logistics GP, LLC, and Tesoro Logistics LP (incorporated by reference herein to Exhibit 10.2 to the Company’s Current Report on Form 8-K filed on September 22, 2016, File No. 1-3473).
10.6	Second Amended and Restated Representation and Services Agreement for Oil Spill Contingency Planning Response and Remediation, dated as of September 16, 2016, among Tesoro Companies, Inc., Tesoro Maritime Company, Tesoro Refining & Marketing Company LLC, Tesoro Alaska Company LLC, Kenai Pipe Line Company, Tesoro Alaska Pipeline Company LLC, Carson Cogeneration Company, Tesoro Great Plains Midstream LLC, Tesoro Great Plains Gathering & Marketing LLC, Bakkenlink Pipeline LLC, ND Land Holdings LLC, Tesoro Logistics Operations LLC, Tesoro High Plains Pipeline Company LLC, Tesoro Logistics Pipelines LLC, Tesoro Logistics Northwest Pipeline LLC, Tesoro SoCal Pipeline Company LLC, QEP Field Services, LLC, QEPM Gathering I, LLC, Green River Processing, LLC, Rendezvous Pipeline Company, LLC, and Tesoro Alaska Terminals, LLC (incorporated by reference herein to Exhibit 10.3 to the Company’s Current Report of Form 8-K filed on September 22, 2016, File No. 1-3473).
10.7	Third Amended and Restated Schedules to Third Amended and Restated Omnibus Agreement, dated as of September 16, 2016, among Tesoro Corporation, Tesoro Refining & Marketing Company LLC, Tesoro Companies, Inc., Tesoro Alaska Company LLC, Tesoro Logistics LP and Tesoro Logistics GP, LLP (incorporated by reference herein to Exhibit 10.4 to the Company’s Current Report on Form 8-K filed on September 22, 2016, File No. 1-3473).
10.8	Credit Agreement, dated as of September 30, 2016, among Tesoro Corporation, JP Morgan Chase Bank, N.A., as administrative agent, and a syndicate of banks and financial institutions as lenders (incorporated by reference herein to Exhibit 10.1 to the Company’s current 8-K filed on October 3, 2016, File No. 1-3473).
*31.1	Certification by Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
*31.2	Certification by Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
*32.1	Certification by Chief Executive Officer Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
*32.2	Certification by Chief Financial Officer Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
**101.INS	XBRL Instance Document

60| Tesoro Corporation

EXHIBITS

Exhibit Number	Description of Exhibit
**101.SCH	XBRL Taxonomy Extension Schema Document
**101.CAL	XBRL Taxonomy Extension Calculation Linkbase Document
**101.DEF	XBRL Taxonomy Extension Definition Linkbase Document
**101.LAB	XBRL Taxonomy Extension Label Linkbase Document
**101.PRE	XBRL Taxonomy Extension Presentation Linkbase Document

* Filed herewith.

** Submitted electronically herewith.

As permitted by Item 601(b)(4)(iii)(A) of Regulation S-K, the Registrant has not filed with this Quarterly Report on Form 10-Q certain instruments defining the rights of holders of long-term debt of the Registrant and its subsidiaries because the total amount of securities authorized under any of such instruments does not exceed 10% of the total assets of the Registrant and its subsidiaries on a consolidated basis. The Registrant agrees to furnish a copy of any such agreements to the Securities and Exchange Commission upon request.

September 30, 2016 | 61

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

		TESORO CORPORATION
Date:	November 1, 2016	/s/ GREGORY J. GOFF
		Gregory J. Goff
		Chairman, President and Chief Executive Officer
		(Principal Executive Officer)
Date:	November 1, 2016	/s/ STEVEN M. STERIN
		Steven M. Sterin
		Executive Vice President and Chief Financial Officer
		(Principal Financial Officer)

62| Tesoro Corporation

EX-2.2

TESORO LOGISTICS LP

July 27, 2016

Tesoro Logistics GP, LLC

Tesoro Logistics Operations LLC

Tesoro Alaska Company LLC

Tesoro Corporation

19100 Ridgewood Parkway

San Antonio, Texas 78259-1828

Re: Contribution, Conveyance and Assumption Agreement, dated as of July 1, 2016 (the “Contribution Agreement”), among Tesoro Logistics LP (the “Partnership”), Tesoro Logistics GP, LLC (the “General Partner”), Tesoro Logistics Operations LLC, Tesoro Alaska Company LLC and Tesoro Corporation                        

Ladies and Gentlemen:

Reference is hereby made to the Contribution Agreement. All capitalized terms used but not defined in this letter shall have the meanings ascribed to them in the Contribution Agreement.

The parties desire to revise the Contribution Agreement to clarify the reimbursement to be paid by the General Partner to the Partnership under Section 4.3 of the Contribution Agreement. Accordingly, the parties agree that Section 4.3 is hereby amended and restated in its entirety as follows:

Section 4.3    General Partner Reimbursement. Promptly after the First Closing, the General Partner shall reimburse the Partnership in an amount equal to $4,000,000.00 (the “Reimbursement”) to address inefficiencies of capital relating to approximately $100,000,000.00 of unused proceeds from the Partnership’s issuance of its 6.375% senior notes due 2024 (the “Available Offering Proceeds”) available to reduce Borrowings at the time of the First and Second Closings. The amount of the Reimbursement is equal to the amount of interest that the Partnership expects to incur on the Available Offering Proceeds for 7.5 months at a rate of 6.375%.

The parties agree that, other than as amended by this letter, the Contribution Agreement shall remain in full force and effect and unmodified.

July 27, 2016

Page 2 of 2

Sincerely,

TESORO LOGISTICS LP

By:    Tesoro Logistics GP, LLC,

its general partner

By:    /s/ PHILLIP M. ANDERSON

Phillip M. Anderson

President

AGREED AND ACCEPTED:

TESORO CORPORATION By: /s/ GREGORY J. GOFF        Gregory J. Goff        President and Chief Executive Officer	TESORO ALASKA COMPANY LLC By: /s/ GREGORY J. GOFF        Gregory J. Goff        President
TESORO LOGISTICS GP, LLC TESORO LOGISTICS OPERATIONS LLC By: /s/ PHILLIP M. ANDERSON        Phillip M. Anderson        President

EX-31.1

Exhibit 31.1

CERTIFICATION PURSUANT TO

SECTION 302 OF

THE SARBANES-OXLEY ACT OF 2002

I, Gregory J. Goff, certify that:

1. I have reviewed this quarterly report on Form 10-Q of Tesoro Corporation;

2. Based on my knowledge, this quarterly report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this quarterly report;

3. Based on my knowledge, the financial statements, and other financial information included in this quarterly report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for the periods presented in this quarterly report;

4. The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15(d)-15(f)) for the registrant and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this quarterly report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal controls over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this quarterly report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this quarterly report based on such evaluation; and

(d) Disclosed in this quarterly report any change in the registrant's internal control over financial reporting that occurred during the registrant's most recent fiscal quarter (the registrant's fourth quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and

5. The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, summarize and report financial information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal control over financial reporting.

Date:	November 1, 2016	/s/ GREGORY J. GOFF
		Gregory J. Goff
		Chief Executive Officer

EX-31.2

Exhibit 31.2

CERTIFICATION PURSUANT TO

SECTION 302 OF

THE SARBANES-OXLEY ACT OF 2002

I, Steven M. Sterin, certify that:

1. I have reviewed this quarterly report on Form 10-Q of Tesoro Corporation;

2. Based on my knowledge, this quarterly report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this quarterly report;

3. Based on my knowledge, the financial statements, and other financial information included in this quarterly report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for the periods presented in this quarterly report;

4. The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15(d)-15(f)) for the registrant and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this quarterly report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal controls over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this quarterly report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this quarterly report based on such evaluation; and

(d) Disclosed in this quarterly report any change in the registrant's internal control over financial reporting that occurred during the registrant's most recent fiscal quarter (the registrant's fourth quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and

5. The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, summarize and report financial information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal control over financial reporting.

Date:	November 1, 2016	/s/ STEVEN M. STERIN
		Steven M. Sterin
		Chief Financial Officer

EX-32.1

Exhibit 32.1

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report of Tesoro Corporation (the “Company”) on Form 10-Q for the period ended September 30, 2016 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Gregory J. Goff, Chief Executive Officer of the Company, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:

(1) The Report fully complies with the requirements of section 13(a) or 15 (d) of the Securities Exchange Act of 1934; and

(2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

/s/ GREGORY J. GOFF

Gregory J. Goff

Chief Executive Officer

November 1, 2016

A signed original of this written statement required by Section 906 has been provided to the Company and will be retained by the Company and furnished to the Securities and Exchange Commission or its staff upon request.

EX-32.2

Exhibit 32.2

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report of Tesoro Corporation (the “Company”) on Form 10-Q for the period ended September 30, 2016 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Steven M. Sterin, Chief Financial Officer of the Company, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:

(1) The Report fully complies with the requirements of section 13(a) or 15 (d) of the Securities Exchange Act of 1934; and

(2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

/s/ STEVEN M. STERIN

Steven M. Sterin

Chief Financial Officer

November 1, 2016

A signed original of this written statement required by Section 906 has been provided to the Company and will be retained by the Company and furnished to the Securities and Exchange Commission or its staff upon request.

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Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2016	Oct. 26, 2016
Document and Entity Information [Abstract]
Entity Registrant Name	TESORO CORP /NEW/
Entity Central Index Key	0000050104
Document Type	10-Q
Document Period End Date	Sep. 30, 2016
Amendment Flag	false
Document Fiscal Year Focus	2016
Document Fiscal Period Focus	Q3
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		116,876,756

XML

Condensed Statements of Consolidated Operations (Unaudited) - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Income Statement [Abstract]
Revenues (a)	$ 6,544	$ 7,743	$ 17,930	$ 22,438
Costs and Expenses
Cost of sales (excluding the lower of cost or market inventory valuation adjustment) (a)	5,232	5,429	14,114	17,090
Lower of cost or market inventory valuation adjustment	(20)	83	(236)	41
Operating expenses	652	640	1,872	1,816
Selling, general and administrative expenses	107	103	283	285
Depreciation and amortization expenses	211	192	633	553
Loss on asset disposals and impairments	2	4	7	12
Operating Income	360	1,292	1,257	2,641
Interest and financing costs, net	(70)	(54)	(190)	(163)
Equity in earnings of equity method investments	7	6	12	9
Other income, net	0	13	32	12
Earnings Before Income Taxes	297	1,257	1,111	2,499
Income tax expense	95	458	362	888
Net Earnings from Continuing Operations	202	799	749	1,611
Earnings (loss) from discontinued operations, net of tax	(1)	0	10	(4)
Net Earnings	201	799	759	1,607
Less: Net earnings from continuing operations attributable to noncontrolling interest	32	40	103	121
Net Earnings Attributable to Tesoro Corporation	169	759	656	1,486
Net Earnings (Loss) Attributable to Tesoro Corporation
Continuing operations	170	759	646	1,490
Discontinued operations	(1)	0	10	(4)
Total	$ 169	$ 759	$ 656	$ 1,486
Net Earnings (Loss) per Share - Basic
Continuing operations	$ 1.44	$ 6.19	$ 5.43	$ 11.98
Discontinued operations	(0.01)	0.00	0.08	(0.03)
Total	$ 1.43	$ 6.19	$ 5.51	$ 11.95
Weighted average common shares outstanding - Basic	118.2	122.5	119.1	124.3
Net Earnings (Loss) per Share - Diluted
Continuing operations	$ 1.43	$ 6.13	$ 5.37	$ 11.85
Discontinued operations	(0.01)	0.00	0.08	(0.03)
Total	$ 1.42	$ 6.13	$ 5.45	$ 11.82
Weighted average common shares outstanding - Diluted	119.3	123.8	120.4	125.7
Dividends per Share	$ 0.55	$ 0.50	$ 1.55	$ 1.35
Supplemental Information
(a) Includes excise taxes collected by our marketing segment	$ 146	$ 137	$ 436	$ 423

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Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Millions		Sep. 30, 2016	Dec. 31, 2015
Current Assets
Cash and cash equivalents		$ 1,387	$ 942
Receivables, net of allowance for doubtful accounts		1,037	792
Inventories, net		2,317	2,302
Prepayments and other current assets		364	271
Total Current Assets		5,105	4,307
Property, Plant and Equipment, Net		9,769	9,541
Other Noncurrent Assets
Acquired Intangibles, Net		1,287	1,211
Other Noncurrent Assets, Net		1,844	1,273
Total Assets		18,005	16,332
Current Liabilities
Accounts payable		1,547	1,568
Other current liabilities		1,146	962
Total Current Liabilities		2,693	2,530
Deferred Income Taxes		1,438	1,222
Debt, Net of Unamortized Issuance Costs		4,667	4,067
Other Noncurrent Liabilities		1,012	773
Total Liabilities		9,810	8,592
Commitments and Contingencies (Note 9)
Tesoro Corporation Stockholders’ Equity
Common stock, par value $0.162/3; authorized 200,000,000 shares; 159,447,688 shares issued (158,457,663 in 2015)		27	26
Additional paid-in capital		1,465	1,391
Retained earnings		6,424	5,954
Treasury stock, 42,480,330 common shares (39,064,342 in 2015), at cost		(2,277)	(2,009)
Accumulated other comprehensive loss, net of tax		(139)	(149)
Total Tesoro Corporation Stockholders’ Equity		5,500	5,213
Noncontrolling Interest		2,695	2,527
Total Equity	[1]	8,195	7,740
Total Liabilities and Equity		$ 18,005	$ 16,332

[1] We have 5.0 million shares of preferred stock authorized with no par value per share. No shares of preferred stock were outstanding as of September 30, 2016 and December 31, 2015.

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Condensed Consolidated Balance Sheets (Unaudited) (Parentheticals) - USD ($) $ in Millions	Sep. 30, 2016	Dec. 31, 2015
Tesoro Corporation Stockholders’ Equity
Common stock, par value (dollar per share)	$ 0.167	$ 0.167
Common stock, authorized shares (shares)	200,000,000	200,000,000
Common stock, shares issued (shares)	159,447,688	158,457,663
Treasury stock, common shares (shares)	42,480,330	39,064,342
Current Assets
Cash and cash equivalents	$ 1,387	$ 942
Property, Plant and Equipment, Net
Property, Plant and Equipment, Net	9,769	9,541
Other Noncurrent Assets
Acquired Intangibles, Net	1,287	1,211
Other Noncurrent Assets, Net	1,844	1,273
Long-term Debt, Net of Unamortized Issuance Costs
Debt, Net of Unamortized Issuance Costs	4,667	4,067
Tesoro Logistics LP
Current Assets
Cash and cash equivalents	497	16
Property, Plant and Equipment, Net
Property, Plant and Equipment, Net	3,129	3,467
Other Noncurrent Assets
Acquired Intangibles, Net	955	976
Other Noncurrent Assets, Net	492	214
Long-term Debt, Net of Unamortized Issuance Costs
Debt, Net of Unamortized Issuance Costs	$ 3,382	$ 2,844

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Condensed Statements of Consolidated Cash Flows (Unaudited) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Cash Flows From (Used In) Operating Activities
Net earnings	$ 759	$ 1,607
Adjustments to reconcile net earnings to net cash from operating activities:
Depreciation and amortization expenses	633	553
Lower of cost or market inventory valuation adjustment, net	(236)	41
Stock-based compensation expense	21	57
Deferred income taxes	182	157
Turnaround and branding charges	(278)	(248)
Other non-cash operating activities	19	0
Changes in current assets and current liabilities	52	(288)
Changes in noncurrent assets and noncurrent liabilities	49	(32)
Net cash from operating activities	1,201	1,847
Cash Flows From (Used In) Investing Activities
Capital expenditures	(623)	(773)
Acquisitions, net of cash	(412)	(6)
Proceeds from asset sales	18	0
Other investing activities	(3)	(4)
Net cash used in investing activities	(1,020)	(783)
Cash Flows From (Used In) Financing Activities
Borrowings under revolving credit agreements	761	346
Repayments on revolving credit agreements	(666)	(326)
Proceeds from debt offering	701	0
Repayments of debt	(258)	(402)
Dividend payments	(186)	(169)
Net proceeds from issuance of Tesoro Logistics LP common units	364	71
Distributions to noncontrolling interest	(155)	(135)
Purchases of common stock	(242)	(494)
Taxes paid related to net share settlement of equity awards	(25)	(45)
Other financing activities	(30)	49
Net cash from (used in) financing activities	264	(1,105)
Increase (Decrease) in Cash and Cash Equivalents	445	(41)
Cash and Cash Equivalents, Beginning of Period	942	1,000
Cash and Cash Equivalents, End of Period	$ 1,387	$ 959

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Basis of Presentation (Notes)

9 Months Ended

Sep. 30, 2016

Organization, Consolidation and Presentation of Financial Statements [Abstract]

BASIS OF PRESENTATION

BASIS OF PRESENTATION

ORGANIZATION

As used in this report, the terms “Tesoro,” the “Company,” “we,” “us” or “our” may refer to Tesoro Corporation, one or more of its consolidated subsidiaries or all of them taken as a whole. The words “we,” “us” or “our” generally include Tesoro Logistics LP (“TLLP”) and its subsidiaries as consolidated subsidiaries of Tesoro Corporation with certain exceptions where there are transactions or obligations between TLLP and Tesoro Corporation or its other subsidiaries. When used in descriptions of agreements and transactions, “TLLP” or the “Partnership” refers to TLLP and its consolidated subsidiaries.

PRINCIPLES OF CONSOLIDATION AND BASIS OF PRESENTATION

PRINCIPLES OF CONSOLIDATION. The interim condensed consolidated financial statements and notes thereto of Tesoro Corporation and its subsidiaries 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. The consolidated balance sheet at December 31, 2015 has been condensed from the audited consolidated financial statements at that date. Certain information and notes normally included in financial statements prepared in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”) have been condensed or omitted pursuant to the SEC’s rules and regulations. However, management believes that the disclosures presented herein are adequate to present the information fairly. The accompanying 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, 2015.

BASIS OF PRESENTATION. We prepare our condensed consolidated financial statements in conformity with U.S. GAAP, which requires management to make estimates and assumptions that affect the reported amounts and disclosures of assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the periods presented. We review our estimates on an ongoing basis. Changes in facts and circumstances may result in revised estimates and actual results could differ from those estimates. The results of operations for any interim period are not necessarily indicative of results for the full year. Certain prior year balances have been aggregated or disaggregated in order to conform to the current year presentation.

Certain reclassifications have been made to prior period presentations to conform to the current year. In the first quarter of 2016, we revised the process by which we reclassify certain logistics costs, primarily recognized by TLLP, during consolidation from operating expenses and selling, general and administrative expense to costs of sales. This better reflects the distribution costs related to Tesoro’s sale of refined products during the ordinary course of business. This change in process did not impact current or prior segment operating results. However, we reclassified $59 million and $178 million from costs of sales and recognized $51 million and $140 million in operating expenses and $8 million and $38 million in selling, general and administrative expenses of the condensed statement of consolidated operations for the three and nine months ended September 30, 2015, respectively, to conform to current period presentation.

For the three months ended September 30, 2016 there was no change and for the nine months ended September 30, 2016, accumulated other comprehensive income decreased $10 million, net of tax, due to the recognition of a settlement loss for one of our executive retirement plans and remeasurement of the pension liability. Due to there being no material impact to accumulated other comprehensive income for the three and nine months ended September 30, 2016 and 2015, consolidated statements of comprehensive income have been omitted.

TLLP.Our condensed consolidated financial statements include TLLP, a variable interest entity. TLLP is a publicly traded limited partnership that was formed to own, operate, develop and acquire logistics assets. Its assets are integral to the success of Tesoro’s refining and marketing operations and are used to gather crude oil and natural gas, process natural gas, and distribute, transport and store crude oil and refined products. TLLP provides us with various terminal distribution, storage, pipeline transportation, natural gas liquids processing, trucking and petroleum-coke handling services under long-term, fee-based commercial agreements. Many of these agreements, with the exception of the storage and transportation services agreement, contain minimum volume commitments. We do not provide financial or equity support through any liquidity arrangements or financial guarantees to TLLP.

Tesoro Logistics GP, LLC (“TLGP”), our wholly-owned subsidiary, serves as the general partner of TLLP. We held an approximate 34% and 36% interest in TLLP at September 30, 2016 and December 31, 2015, respectively, including the general partner interest (approximately 2% at both September 30, 2016 and December 31, 2015) and all of the incentive distribution rights. This interest at September 30, 2016 includes 33,194,109 common units and 2,083,330 general partner units. As the general partner of TLLP, we have the sole ability to direct the activities of TLLP that most significantly impact its economic performance. We are also considered to be the primary beneficiary for accounting purposes and are TLLP’s primary customer. In the event TLLP incurs a loss, our operating results will reflect TLLP’s loss, net of intercompany eliminations. Under our various long-term, fee-based commercial agreements with TLLP, transactions with us accounted for 60% and 58% of TLLP’s total revenues for the three and nine months ended September 30, 2016, respectively, and 54% and 55% of TLLP’s total revenues for the three and nine months ended September 30, 2015, respectively.

DISCONTINUED OPERATIONS.On September 25, 2013, we completed the sale of all of our interest in Tesoro Hawaii, LLC, which operated a 94 thousand barrels per day (“Mbpd”) Hawaii refinery, retail stations and associated logistics assets (the “Hawaii Business”). The results of operations for this business have been presented as discontinued operations in the condensed statements of consolidated operations for the three and nine months ended September 30, 2016 and 2015. There were no revenues for either the three and nine months ended September 30, 2016 or 2015. We recorded a loss for the three months ended September 30, 2016 of $1 million both before and after tax. There was no gain or loss recorded for the three months ended September 30, 2015. We recorded a gain for the nine months ended September 30, 2016 of $16 million and $10 million before and after tax, respectively, related to the calendar year 2015 earn-out owed to Tesoro. There was a $6 million and $4 millionrecorded loss before and after tax, respectively, for the nine months ended September 30, 2015. Cash flows from discontinued operations were $2 million for the nine months ended September 30, 2016 and cash flows used in discontinued operations were $2 million for the nine months ended September 30, 2015. Unless otherwise noted, the information in the notes to the condensed consolidated financial statements relates to our continuing operations.

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, “Deferral of the Effective Date, “ASU 2016-08, “Principal versus Agent Considerations (Reporting Revenue Gross versus Net),” ASU 2016-10, “Identifying Performance Obligations and Licensing,” and ASU 2016-12, “Narrow-Scope Improvements and Practical Expedients.” These standards provide accounting guidance for all revenue arising from contracts to provide goods or services to customers. ASU 2014-09 is effective for interim and annual periods beginning after December 15, 2017. Early adoption as of January 1, 2017 is permitted; however, we do not intend to adopt early. The standard allows for either full retrospective adoption or modified retrospective adoption. We are currently evaluating the impact of the standard on our financial statements and related disclosures. Based on our initial evaluation, the adoption of the standard is not expected to have a material impact on the amount or timing of revenue recognized.

CONSOLIDATION.In February 2015, the FASB issued ASU 2015-02, “Amendments to the Consolidation Analysis” (“ASU 2015-02”). This standard modifies existing consolidation guidance for reporting organizations that are required to evaluate whether they should consolidate certain legal entities. ASU 2015-02 is effective for interim and annual periods beginning after December 15, 2015, and requires either a retrospective or a modified retrospective approach to adoption. We adopted this guidance using the modified retrospective approach as of January 1, 2016 and performed the required reassessments outlined by the guidance. For further information on the results of the reassessments, refer to Note 4, Investments - Equity Method and Joint Ventures.

BUSINESS COMBINATIONS.In September 2015, the FASB issued ASU 2015-16, “Simplifying the Accounting for Measurement-Period Adjustments” (“ASU 2015-16”). The standard requires an acquirer to recognize the cumulative impact of adjustments to provisional purchase price amounts that are identified during the measurement period in the reporting period, in which the adjustment amounts are determined. The standard also requires an entity to present separately on the face of the income statement or disclose in the notes the portion of the amount recorded in current-period earnings by line item that would have been recorded in previous reporting periods if the adjustment to the provisional amounts had been recognized as of the acquisition date. ASU 2015-16 is effective for interim and annual periods beginning after December 15, 2015 and must be applied prospectively to adjustments that occur after the effective date. We adopted this guidance as of January 1, 2016 with no impact to our financial statements.

LEASES.In February 2016, the FASB issued ASU 2016-02, “Leases” (“ASU 2016-02”), which improves transparency and comparability among organizations by requiring lessees to recognize a lease liability and a corresponding lease asset for virtually all lease contracts. It also requires additional disclosures about leasing arrangements. ASU 2016-02 is effective for interim and annual periods beginning after December 15, 2018, and requires a modified retrospective approach to adoption. Early adoption is permitted. At this time, we are evaluating the potential impact of this standard on our financial statements.

SHARE-BASED COMPENSATION. In March 2016, the FASB issued ASU 2016-09, “Improvements to Employee Share-Based Payment Accounting” (“ASU 2016-09”), which simplifies several aspects of the accounting for employee share-based payment transactions including accounting for income taxes, cash flow presentation of tax impacts, forfeitures, and liability versus equity accounting due to statutory tax withholding requirements. ASU 2016-09 is effective for interim and annual periods beginning after December 15, 2016, with early adoption permitted. As of January 1, 2016, we early adopted ASU 2016-09 and with respect to the guidance on forfeitures, we have elected to continue to estimate forfeitures on the date of grant to account for the estimated number of awards for which the requisite service period will not be rendered. The adoption of ASU 2016-09 had a $16 million impact for the nine months ended September 30, 2016, resulting in a lower effective tax rate and immaterial changes to our cash flow presentation. There was no additional benefit related to additional share vestings during the three months ended September 30, 2016.

STATEMENT OF CASH FLOWS. In August 2016, the FASB issued ASU 2016-15, “Clarification of Certain Cash Receipts and Cash Payments” (“ASU 2016-15”), which eliminates the diversity in practice related to the classification of certain cash receipts and payments in the statement of cash flows, by adding or clarifying guidance on eight specific cash flow issues. ASU 2016-15 is effective for interim and annual reporting periods beginning after December 15, 2017, with early adoption permitted. The amendments in this update should be applied retrospectively to all periods presented, unless deemed impracticable, in which case, prospective application is permitted. At this time, we are evaluating the potential impact of this standard on our financial statements.

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Inventories (Notes)

9 Months Ended

Sep. 30, 2016

Inventory Disclosure [Abstract]

INVENTORIES

INVENTORIES

COMPONENTS OF INVENTORIES (in millions)

	September 30, 2016			December 31, 2015
Domestic crude oil and refined products	$	2,050		$	2,142
Foreign subsidiary crude oil	159			325
Materials and supplies	150			140
Oxygenates and by-products	81			54
Less: Lower of cost or market reserve	(123		)	(359		)
Total Inventories, Net	$	2,317		$	2,302

We recorded a lower of cost or market reserve of $123 million and $359 million at September 30, 2016 and December 31, 2015, respectively, to cost of sales for our crude oil, refined products, oxygenates and by-product inventories to adjust the carrying value of our inventories to reflect replacement cost as of those reporting dates. We reverse any lower of cost or market reserve in the subsequent period because the inventories are sold or used and then perform a complete lower of cost or market assessment of ending inventories at the end of each reporting period to determine if a reserve is required.

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Property, Plant and Equipment (Notes)

9 Months Ended

Sep. 30, 2016

Property, Plant and Equipment [Abstract]

PROPERTY, PLANT AND EQUIPMENT

PROPERTY, PLANT AND EQUIPMENT

PROPERTY, PLANT AND EQUIPMENT, AT COST (in millions)

	September 30, 2016			December 31, 2015
Refining	$	8,210		$	7,457
TLLP	3,642			3,894
Marketing	929			915
Corporate	381			296
Property, Plant and Equipment, at Cost	13,162			12,562
Accumulated depreciation	(3,393		)	(3,021		)
Property, Plant and Equipment, Net	$	9,769		$	9,541

We capitalize interest as part of the cost of major projects during the construction period. Capitalized interest totaled $8 millionand $9 million for the three months ended September 30, 2016 and 2015, respectively, and $20 million and $27 million for the nine months ended September 30, 2016 and 2015, respectively, and is recorded as a reduction to net interest and financing costs in our condensed statements of consolidated operations.

ACQUISITIONS

Individually and on an aggregate basis, the following acquisitions were immaterial to our condensed consolidated financial statements.

GREAT NORTHERN MIDSTREAM. On January 8, 2016, we closed the acquisition of Great Northern Midstream LLC, a crude oil logistics provider which owns and operates a crude oil pipeline and gathering system, along with transportation, storage and rail loading facilities in the Williston Basin of North Dakota. The acquisition includes a 97-mile crude oil pipeline, a proprietary 28-mile gathering system in the core of the Bakken, and a facility that has capacity of 154 Mbpd for rail loading and 657,000 barrels of storage in Fryburg, North Dakota.

FLINT HILLS RESOURCES. On June 20, 2016, we closed the acquisition of Flint Hills Resources’ (“FHR”) wholesale marketing and logistics assets in Anchorage and Fairbanks, Alaska. This acquisition includes all FHR’s wholesale fuel marketing contracts in Alaska and an Anchorage terminal with 580,000 barrels of storage capacity, a truck rack, and rail loading capability. In addition, the acquisition includes a Fairbanks airport terminal that includes 22,500 barrels of jet fuel storage and a truck rack, as well as a multi-year terminalling agreement at FHR’s North Pole terminal, which will provide efficient rail offload capabilities and provide access to Alaska’s interior. The terminalling and storage assets acquired were sold to TLLP during the third quarter of 2016.

DAKOTA PRAIRIE REFINING. On June 28, 2016, we acquired Dakota Prairie Refining, LLC, which owns a refinery near Dickinson, North Dakota, with strategic access to advantaged Bakken crude oil and is located just 100 miles west of the Tesoro Mandan Refinery. This acquired refinery has a crude oil capacity of 20 Mbpd and produces ultra-low sulfur diesel, naphtha and atmospheric residuals. Tesoro plans to continue to market the ultra-low sulfur diesel to local customers and utilize the naphtha and atmospheric residuals in its integrated value chain system.

VIRENT. On September 28, 2016, we acquired Virent, Inc. (“Virent”), an innovative renewable fuels and chemicals company, to support Virent in bringing its biofuels technology to commercial scale. Virent's BioForming® technology can convert sugars and other biomass derived feedstocks into renewable gasoline blendstocks and aromatics, which are fully compatible with the nation's existing fuel infrastructure and current vehicle warranties. Virent's aromatics product can also be used for renewable chemicals, most notably para-xylene, a key component in polyester.

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Equity Method Investments Equity Method Investments (Notes)

9 Months Ended

Sep. 30, 2016

Equity Method Investments and Joint Ventures [Abstract]

Equity Method Investments and Joint Ventures Disclosure [Text Block]

INVESTMENTS - EQUITY METHOD AND JOINT VENTURES

For each of the following investments, we have the ability to exercise significant influence over each of these investments through our participation in the management committees, which make all significant decisions. However, since we have equal or proportionate influence over each committee as a joint interest partner and all significant decisions require consent of the other investor(s) without regard to our economic interest, we have determined that these entities should not be consolidated and apply the equity method of accounting with respect to our investments in each entity.

• WATSON COGENERATION COMPANY (“Watson”). We own a 51% interest in Watson, which produces steam and electricity at a facility located at our Los Angeles refinery. Our transactions with Watson, which do not have intra-entity profits requiring elimination, consist of sales of fuel gas and water, purchases of steam and electricity and charges for general and administrative support.

• RENDEZVOUS GAS SERVICES, L.L.C. (“RGS”). TLLP has a 78% interest in RGS, which owns and operates the infrastructure that transports gas from certain fields to several re-delivery points in southwestern Wyoming, including natural gas processing facilities that are owned by TLLP or a third party. Prior to 2016, Tesoro and TLLP consolidated RGS, however, upon the reassessment performed in conjunction with the adoption of ASU 2015-02 as of January 1, 2016, we determined RGS represents a variable interest entity to TLLP for which we are not the primary beneficiary. Under the limited liability company agreement, we do not have voting rights commensurate with our economic interest due to veto rights available to our partner in RGS. Certain business decisions, including, but not limited to, decisions with respect to significant expenditures or contractual commitments, annual budgets, material financings, dispositions of assets or amending the members’ gas servicing agreements, require unanimous approval of the members.

• THREE RIVERS GATHERING, LLC (“TRG”). TLLP owns a 50% interest in TRG which operates natural gas gathering assets within the southeastern Uinta Basin and is primarily supported by long-term, fee-based gas gathering agreements with minimum volume commitments.

• UINTAH BASIN FIELD SERVICES, L.L.C. (“UBFS”). TLLP owns a 38% interest in UBFS which owns and operates the natural gas gathering infrastructure located in the southeastern Uinta Basin and is supported by long-term, fee-based gas gathering agreements that contain firm throughput commitments, which generate fees whether or not the capacity is used, and is operated by TLLP.

EQUITY METHOD INVESTMENTS (in millions)

	Watson			Vancouver Energy			TLLP
							RGS			TRG			UBFS			Total
Balance at December 31, 2015	$	92		$	9		$	—		$	42		$	16		$	159
Effect of deconsolidation (a)	—			—			295			—			—			295
Effect of consolidation (b)	—			(8		)	—			—			—			(8		)
Equity in earnings (loss)	3			(1		)	6			2			2			12
Distributions received	(5		)	—			(16		)	(3		)	(2		)	(26		)
Balance at September 30, 2016	$	90		$	—		$	285		$	41		$	16		$	432

(a) The reassessment of the investments performed by TLLP resulted in the deconsolidation of RGS and the reporting of RGS as an equity method investment. TLLP recognized an increase of $295 million to equity method investments as of January 1, 2016 as a result of the deconsolidation in addition to a cumulative effect reduction to opening equity of $2 million related to the difference in earnings under the equity method of accounting in prior periods. The carrying amount of our investment in RGS exceeded the underlying equity in net assets by $137 million at September 30, 2016.

(b) Effective September 1, 2016, we became majority owner of our venture with Savage Companies to construct, own and operate a unit train unloading and marine loading terminal at Port of Vancouver, USA (the “Vancouver Energy” terminal). As a result, Vancouver Energy was consolidated.

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Derivative Instruments (Notes)

9 Months Ended

Sep. 30, 2016

General Discussion of Derivative Instruments and Hedging Activities [Abstract]

DERIVATIVE INSTRUMENTS

DERIVATIVE INSTRUMENTS

In the ordinary course of business, our profit margins, earnings and cash flows are impacted by the timing, direction and overall change in pricing for commodities used throughout our operations. We use non-trading derivative instruments to manage our exposure to the following:

• price risks associated with the purchase or sale of feedstocks, refined products and energy supplies related to our refineries, terminals, marketing fuel inventory and customers;

• price risks associated with inventories above or below our target levels;

• future emission credit requirements; and

• exchange rate fluctuations on our purchases of Canadian crude oil.

Our accounting for derivative instruments depends on whether the underlying commodity will be used or sold in the normal course of business. For contracts where the crude oil or refined products are expected to be used or sold in the normal course of business, we apply the normal purchase normal sale exception and follow the accrual method of accounting. All other derivative instruments are recorded at fair value using mark-to-market accounting.

Our derivative instruments can include forward purchase and sale contracts (“Forward Contracts”), exchange-traded futures (“Futures Contracts”), over-the-counter swaps, including those cleared on an exchange (“Swap Contracts”), options (“Options”), and over-the-counter options (“OTC Option Contracts”). Forward Contracts are agreements to buy or sell the commodity at a predetermined price at a specified future date. Futures Contracts are standardized agreements, traded on a futures exchange, to buy or sell the commodity at a predetermined price at a specified future date. Options provide the right, but not the obligation to buy or sell the commodity at a specified price in the future. Swap Contracts and OTC Option Contracts require cash settlement for the commodity based on the difference between a contracted fixed or floating price and the market price on the settlement date. Certain of these contracts require cash collateral to be received or paid if our asset or liability position, respectively, exceeds specified thresholds. We believe that we have minimal credit risk with respect to our counterparties.

The following table presents the fair value of our derivative instruments as of September 30, 2016 and December 31, 2015. The fair value amounts below are presented on a gross basis and do not reflect the netting of asset and liability positions permitted under the terms of our master netting arrangements including cash collateral on deposit with, or received from, brokers. We offset the recognized fair value amounts for multiple derivative instruments executed with the same counterparty in our financial statements when a legal right of offset exists. As a result, the asset and liability amounts below will not agree with the amounts presented in our condensed consolidated balance sheets.

DERIVATIVE ASSETS AND LIABILITIES (in millions)

		Derivative Assets						Derivative Liabilities
	Balance Sheet Location	September 30, 2016			December 31, 2015			September 30, 2016			December 31, 2015
Commodity Futures Contracts	Prepayments and other current assets	$	718		$	711		$	721		$	673
Commodity Swap Contracts	Prepayments and other current assets	7			15			7			14
Commodity Swap Contracts	Receivables	2			7			—			—
Commodity Forward Contracts	Receivables	3			2			—			—
Commodity Forward Contracts	Accounts payable	—			—			2			4
Total Gross Mark-to-Market Derivatives		730			735			730			691
Less: Counterparty Netting and Cash Collateral (a)		(696		)	(675		)	(723		)	(687		)
Total Net Fair Value of Derivatives		$	34		$	60		$	7		$	4

(a) Certain of our derivative contracts, under master netting arrangements, include both asset and liability positions. We offset both the fair value amounts and any related cash collateral amounts recognized for multiple derivative instruments executed with the same counterparty when there is a legally enforceable right and an intention to settle net or simultaneously. As of September 30, 2016 and December 31, 2015, we had provided cash collateral amounts of $27 million and $12 million, respectively, related to our unrealized derivative positions. Cash collateral amounts are netted with mark-to-market derivative assets.

GAINS (LOSSES) ON MARK-TO-MARKET DERIVATIVES (in millions)

	Three Months Ended September 30,					Nine Months Ended September 30,
	2016		2015			2016			2015
Commodity Contracts	$	19	$	153		$	(25	)	$	122
Foreign Currency Forward Contracts	—		(3		)	1			(5		)
Total Gain (Loss) on Mark-to-Market Derivatives	$	19	$	150		(24		)	$	117

INCOME STATEMENT LOCATION OF GAINS (LOSSES) ON MARK-TO-MARKET DERIVATIVES (in millions)

	Three Months Ended September 30,					Nine Months Ended September 30,
	2016		2015			2016			2015
Revenues	$	10	$	30		$	5		$	28
Cost of sales	9		123			(30		)	94
Other income (expense), net	—		(3		)	1			(5		)
Total Gain (Loss) on Mark-to-Market Derivatives	$	19	$	150		$	(24	)	$	117

OPEN LONG (SHORT) POSITIONS

OUTSTANDING COMMODITY AND OTHER CONTRACTS (units in thousands)

	Contract Volumes by Year of Maturity			Unit of Measure
Mark-to-Market Derivative Instrument	2016	2017	2018
Crude oil, refined products and blending products:
Futures - short	—	(4,854)	(75)	Barrels
Futures - long	2,720	—	—	Barrels
Swaps - short	(2,225)	—	—	Barrels
Forwards - short	(970)	—	—	Barrels
Carbon emissions credits:
Futures - long	4,850	1,000	—	Tons
Corn:
Futures - short	(3,245)	—	—	Bushels

At September 30, 2016, we had open Forward Contracts to purchase CAD $28 million that were settled on October 24, 2016.

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Fair Value Measurements (Notes)

9 Months Ended

Sep. 30, 2016

Fair Value Disclosures [Abstract]

FAIR VALUE MEASUREMENTS

FAIR VALUE MEASUREMENTS

We classify financial assets and liabilities according to the fair value hierarchy. Financial assets and liabilities classified as level 1 instruments are valued using quoted prices in active markets for identical assets and liabilities. Level 2 instruments are valued using quoted prices for similar assets and liabilities in active markets, and inputs other than quoted prices, such as liquidity, that are observable for the asset or liability. Our level 2 instruments include derivatives valued using market quotations from independent price reporting agencies, third-party brokers and commodity exchange price curves that are corroborated with market data. Level 3 instruments are valued using significant unobservable inputs that are not supported by sufficient market activity. We do not have any financial assets or liabilities classified as level 3 at September 30, 2016 or December 31, 2015.

Our financial assets and liabilities measured at fair value on a recurring basis include derivative instruments. Additionally, our financial liabilities include obligations for Renewable Identification Numbers (“RINs”) and cap and trade emission credits for the state of California (together with RINs, our “Environmental Credit Obligations”). See Note 5 for further information on our derivative instruments. Our Environmental Credit Obligations represent the estimated fair value amount at each balance sheet date for which we do not have sufficient RINs and California cap and trade credits to satisfy our obligations to the U.S. Environmental Protection Agency (“EPA”) and the state of California, respectively. RINs are assigned to biofuels produced or imported into the U.S. as required by the EPA, which sets annual obligations for the percentage of biofuels that must be blended into transportation fuels consumed in the U.S. As a producer of petroleum transportation fuels, we are required to either blend biofuels into the products we produce at a rate that will meet the EPA’s obligations or we have to buy RINs in the open market for the portion of our obligation that we do not satisfy through the purchase of biofuels. Our liability for cap and trade emission credits for the state of California represent the deficit of credits to satisfy emission reduction requirements mandated in California’s Assembly Bill 32 for each period which stationary or transportation fuel carbon emissions exceed the level allowed by the regulation.

FINANCIAL ASSETS AND LIABILITIES AT FAIR VALUE (in millions)

	September 30, 2016
	Level 1		Level 2		Level 3		Netting and Collateral (a)			Total
Assets:
Commodity Futures Contracts	$	716	$	2	$	—	$	(689	)	$	29
Commodity Swap Contracts	—		9		—		(7		)	2
Commodity Forward Contracts	—		3		—		—			3
Total Assets	$	716	$	14	$	—	$	(696	)	$	34
Liabilities:
Commodity Futures Contracts	$	719	$	2	$	—	$	(716	)	$	5
Commodity Swap Contracts	—		7		—		(7		)	—
Commodity Forward Contracts	—		2		—		—			2
Environmental Credit Obligations	—		186		—		—			186
Total Liabilities	$	719	$	197	$	—	$	(723	)	$	193

	December 31, 2015
	Level 1		Level 2		Level 3		Netting and Collateral (a)			Total
Assets:
Commodity Futures Contracts	$	711	$	—	$	—	$	(660	)	$	51
Commodity Swap Contracts	—		22		—		(15		)	7
Commodity Forward Contracts	—		2		—		—			2
Total Assets	$	711	$	24	$	—	$	(675	)	$	60
Liabilities:
Commodity Futures Contracts	$	673	$	—	$	—	$	(673	)	$	—
Commodity Swap Contracts	—		14		—		(14		)	—
Commodity Forward Contracts	—		4		—		—			4
Environmental Credit Obligations	—		40		—		—			40
Total Liabilities	$	673	$	58	$	—	$	(687	)	$	44

(a) Certain of our derivative contracts, under master netting arrangements, include both asset and liability positions. We offset both the fair value amounts and any related cash collateral amounts recognized for multiple derivative instruments executed with the same counterparty when there is a legally enforceable right and an intention to settle net or simultaneously. As of September 30, 2016 and December 31, 2015, we had provided cash collateral amounts of $27 million and $12 million, respectively, related to our unrealized derivative positions. Cash collateral amounts are netted with mark-to-market derivative assets.

We believe the carrying value of our other financial instruments, including cash and cash equivalents, receivables, accounts payable and certain accrued liabilities approximate fair value. Our fair value assessment incorporates a variety of considerations, including the short-term duration of the instruments and the expected continued insignificance of bad debt expense, which includes an evaluation of counterparty credit risk. The borrowings under the Tesoro Corporation revolving credit facility (the “Revolving Credit Facility”), the TLLP senior secured revolving credit agreement (the “TLLP Revolving Credit Facility”) and the secured TLLP drop down credit facility (the “TLLP Dropdown Credit Facility”), which include variable interest rates, approximate fair value. The fair value of our fixed rate debt is based on prices from recent trade activity and is categorized in level 2 of the fair value hierarchy. The carrying value and fair value of our debt were approximately $4.8 billion and $5.0 billion as of September 30, 2016, respectively and $4.1 billion and $4.1 billion at December 31, 2015, respectively. These carrying and fair values of our debt do not consider the unamortized issuance costs, which are netted against our total debt.

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Debt (Notes)

9 Months Ended

Sep. 30, 2016

Debt Disclosure [Abstract]

DEBT

DEBT

DEBT BALANCE, NET OF UNAMORTIZED ISSUANCE COSTS (in millions)

	September 30, 2016			December 31, 2015
Total debt (a)	$	4,764		$	4,147
Unamortized issuance costs (b)	(82		)	(74		)
Current maturities	(15		)	(6		)
Debt, Net of Current Maturities and Unamortized Issuance Costs	$	4,667		$	4,067

(a) Total debt related to TLLP, which is non-recourse to Tesoro, except for TLGP, was $3.4 billion and $2.9 billion at September 30, 2016 and December 31, 2015, respectively.

(b) Includes unamortized premiums of $4 million associated with TLLP’s senior notes at both September 30, 2016 and December 31, 2015.

REVOLVING CREDIT FACILITIES

AVAILABLE CAPACITY UNDER CREDIT FACILITIES (in millions)

	Total Capacity		Amount Borrowed as of September 30, 2016		Outstanding Letters of Credit		Available Capacity		Expiration
Tesoro Corporation Revolving Credit Facility	$	2,000	$	—	$	4	$	1,996	September 30, 2020
TLLP Revolving Credit Facility	600		—		—		600		January 29, 2021
TLLP Dropdown Credit Facility	1,000		400		—		600		January 29, 2021
Letter of Credit Facilities	1,555		—		44		1,511
Total Credit Facilities	$	5,155	$	400	$	48	$	4,707

TESORO CORPORATION REVOLVING CREDIT FACILITY. On September 30, 2016, we entered into a new senior revolving credit agreement (the “Revolving Credit Agreement”) with a syndicate of banks and financial institutions that provides for a total available revolving capacity of $2.0 billion. The credit availability is not subject to borrowing base redetermination and is scheduled to mature on September 30, 2020. Once certain conditions are satisfied, the Revolving Credit Agreement allows Tesoro to request an increase in capacity to $2.25 billion prior to an investment grade credit rating from either Moody's Investors Service or S&P Global Ratings and up to $3.0 billion afterward, subject to receiving increased commitments from lenders. We had unused credit availability of approximately 100% of the borrowing capacity at September 30, 2016. The Revolving Credit Agreement replaced Tesoro’s Sixth Amended and Restated Credit Agreement dated January 4, 2013, which was terminated on September 30, 2016.

Borrowings bear interest at either a base rate (3.50% at September 30, 2016), plus the applicable spread, or a Eurodollar rate (0.53% at September 30, 2016 (1M LIBOR)), plus the applicable spread. The applicable spread at September 30, 2016 was0.75% in the case of the base rate and 1.75% in the case of the Eurodollar rate but will vary generally based on the credit ratings in effect on Tesoro’s senior, unsecured, non-credit enhanced long-term debt. The commitment fee for the unused portion of the facility was0.30% at September 30, 2016.

The Revolving Credit Agreement includes certain negative, affirmative and financial covenants, a number of which will either no longer apply or become less restrictive if an investment grade rating from either Moody's Investors Service or S&P Global Ratings is achieved, that may limit or restrict the ability of Tesoro and its subsidiaries to:

• pay dividends and make other distributions with respect to our capital stock and purchase, redeem or retire our capital stock;

• enter into certain hedging agreements;

• incur additional indebtedness;

• sell assets unless the proceeds from those sales are used to repay debt or are reinvested in our business;

• incur liens on assets to secure certain debt;

• engage in certain business activities;

• make certain payments and distributions from our subsidiaries;

• engage in certain investments, mergers or consolidations and transfers of assets; and

• enter into non-arm’s length transactions with affiliates.

At present, the Revolving Credit Facility is guaranteed by substantially all of Tesoro’s active domestic subsidiaries, excluding TLGP, TLLP and its subsidiaries, certain foreign subsidiaries and other specified subsidiaries and is secured by substantially all of Tesoro’s active domestic subsidiaries’ crude oil and refined product inventories, cash and receivables, other than those of the excluded subsidiaries. If Tesoro achieves an investment grade credit rating from either Moody's Investors Service or S&P Global Ratings, the guarantees and collateral shall be released and the facility will become unsecured.

The Revolving Credit Facility allows us to obtain letters of credit under separate letter of credit agreements for foreign crude oil purchases. Our uncommitted letter of credit agreements had $44 million outstanding as of September 30, 2016. Letters of credit outstanding under these agreements incur fees ranging from 0.40% to0.90% and are secured by the crude oil inventories for which they are issued. Capacity under these letter of credit agreements is available on an uncommitted basis and can be terminated by either party at any time.

TLLP REVOLVING CREDITY FACILITY AND DROPDOWN CREDIT FACILITY.The secured TLLP Revolving Credit Facility provided for total loan availability of $600 million as of September 30, 2016. The secured TLLP Revolving Credit Facility is non-recourse to Tesoro, except for TLGP, and is guaranteed by all of TLLP’s subsidiaries, with the exception of certain non-wholly owned subsidiaries, and secured by substantially all of TLLP’s assets. Borrowings are available under the secured TLLP Revolving Credit Facility up to the total loan availability of the facility. TLLP had no borrowings outstanding under the secured TLLP Revolving Credit Facility, resulting in the full loan availability of the borrowing capacity as of September 30, 2016.

Additionally, the secured TLLP Dropdown Credit Facility provides for total loan availability of $1.0 billion as of September 30, 2016. The primary use of proceeds under this facility will be to fund its asset acquisitions. The terms, covenants and restrictions under this facility are substantially the same as the secured TLLP Revolving Credit Facility. There was $400 million of borrowings outstanding under the TLLP Dropdown Credit Facility, resulting in a total unused loan availability of $600 million or 60% of the borrowing capacity, as of September 30, 2016. The weighted average interest rate for borrowings under the TLLP Dropdown Credit Facility was 2.54% at September 30, 2016.

The total aggregate available facility limits for the secured TLLP Revolving Credit Facility and the secured TLLP Dropdown Credit Facility totaled $1.6 billion at September 30, 2016. TLLP is allowed to request the loan availability for both the secured TLLP Revolving Credit Facility and the secured TLLP Dropdown Credit Facility be increased up to an aggregate of $2.1 billion, subject to receiving increased commitments from the lenders. The secured TLLP Revolving Credit Facility and the secured TLLP Dropdown Credit Facility ratably share collateral comprised primarily of TLLP property, plant, and equipment and both facilities mature on January 29, 2021. In addition, upon an upgrade of TLLP’s corporate family rating to investment grade from either Moody's Investors Service or S&P Global Ratings, certain covenants and restrictions under each facility will automatically and permanently be eliminated or improved.

TLLP SENIOR NOTES ISSUANCE. On May 9, 2016, TLLP completed a registered offering of $250 million aggregate principal amount of 6.125% Senior Notes due 2021 (“2021 Notes”) and $450 million aggregate principal amount of 6.375% Senior Notes due 2024 (“2024 Notes”). TLLP used the proceeds of the offering of the 2021 Notes to repay amounts then outstanding under the TLLP Dropdown Credit Facility and the proceeds of the offering of the 2024 Notes to repay amounts outstanding under the TLLP Revolving Credit Facility and for general partnership purposes.

The 2021 Notes were issued under the same indenture governing the existing $550 million of TLLP’s 6.125% Senior Notes due 2021 issued in August 2013 and have the same terms as those senior notes. The 2021 Notes have no sinking fund requirements. The 2021 Notes may be redeemed at premiums equal to 4.594% through October 15, 2017; 3.063% from October 15, 2017 through October 15, 2018; 1.531% from October 15, 2018 through October 15, 2019; and at par thereafter, plus accrued and unpaid interest. The 2021 Notes are unsecured and guaranteed by all of TLLP’s subsidiaries, except Tesoro Logistics Finance Corp., the co-issuer, and are non-recourse to Tesoro, except for TLGP, and contain customary terms, events of default and covenants for an issuance of non-investment grade securities.

The 2024 Notes have no sinking fund requirements. TLLP may redeem some or all of the 2024 Notes, prior to May 1, 2019, at a make-whole price plus accrued and unpaid interest, if any. On or after May 1, 2019, the 2024 Notes may be redeemed at premiums equal to 4.781% through May 1, 2020; 3.188% from May 1, 2020 through May 1, 2021; 1.594% from May 1, 2021 through May 1, 2022; and at par thereafter, plus accrued and unpaid interest. TLLP will have the right to redeem up to 35% of the aggregate principal amount at 106.375% of face value with proceeds from certain equity issuances through May 1, 2019. The 2024 Notes are unsecured and guaranteed by all of TLLP’s subsidiaries, except Tesoro Logistics Finance Corp., the co-issuer, and are non-recourse to Tesoro, except for TLGP, and contain customary terms, events of default and covenants for an issuance of non-investment grade securities.

TLLP REPAYMENTS. On February 3, 2016, TLLP repaid the full amount of its unsecured term loan facility (“TLLP Unsecured Term Loan Facility”), including accrued interest, with proceeds drawn from the TLLP Dropdown Credit Facility. All commitments under the TLLP Unsecured Term Loan Facility were terminated effective with the repayment.

TLLP SENIOR NOTES EXCHANGE. On February 26, 2016, TLLP commenced an offer to exchange (the “Exchange”) its existing unregistered 5.50% Senior Notes due 2019 (“2019 Notes”) and 6.25% Senior Notes due 2022 (“2022 Notes”) (together, “Unregistered Notes”) for an equal principal amount of 5.50% Senior Notes due 2019 and 6.25% Senior Notes due 2022 (the “Exchange Notes”), respectively, that were registered under the Securities Act of 1933, as amended. On April 14, 2016, the Exchange was completed for all of the 2019 Notes and substantially all of the 2022 Notes. The terms of the Exchange Notes are identical in all material respects (including principal amount, interest rate, maturity and redemption rights) to the Unregistered Notes for which they were exchanged, except that the Exchange Notes generally are not subject to transfer restrictions. The Exchange fulfills all of the requirements of the registration rights agreements for the Unregistered Notes.

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Benefit Plans (Notes)

9 Months Ended

Sep. 30, 2016

Defined Benefit Pension Plans and Defined Benefit Postretirement Plans Disclosure [Abstract]

BENEFIT PLANS

BENEFIT PLANS

Tesoro sponsors four defined benefit pension plans, including one funded qualified employee retirement plan and three unfunded nonqualified executive plans. Our funded employee retirement plan fully meets all funding requirements under applicable laws and regulations. We contributed $60 million to the retirement plan during the nine months ended September 30, 2016, to maintain the funded status of the plan. Tesoro also provides other postretirement health care benefits to retirees who met certain service requirements and were participating in our group health insurance program at retirement.

COMPONENTS OF PENSION AND OTHER POSTRETIREMENT BENEFIT EXPENSE (INCOME) (in millions)

	Pension Benefits
	Three Months Ended September 30,						Nine Months Ended September 30,
	2016			2015			2016			2015
Service cost	$	11		$	11		$	34		$	34
Interest cost	8			7			23			22
Expected return on plan assets	(6		)	(7		)	(20		)	(20		)
Amortization of prior service cost	—			1			—			1
Recognized net actuarial loss	4			6			14			18
Recognized curtailment loss and settlement cost	—			—			5			—
Net Periodic Benefit Expense	$	17		$	18		$	56		$	55
	Other Postretirement Benefits
	Three Months Ended September 30,						Nine Months Ended September 30,
	2016			2015			2016			2015
Service cost	$	—		$	—		$	2		$	2
Interest cost	1			1			2			2
Amortization of prior service credit	(8		)	(8		)	(26		)	(25		)
Recognized net actuarial loss	1			1			3			3
Net Periodic Benefit Income	$	(6	)	$	(6	)	$	(19	)	$	(18	)

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Commitments and Contingencies (Notes)

9 Months Ended

Sep. 30, 2016

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies Disclosure [Text Block]

COMMITMENTS AND CONTINGENCIES

ENVIRONMENTAL LIABILITIES

We are incurring and expect to continue to incur expenses for environmental remediation liabilities at a number of currently and previously owned or operated refining, pipeline, terminal and retail station properties. We have accrued liabilities for these expenses and believe these accruals are adequate based on current information and projections that can be reasonably estimated. Additionally, we have recognized environmental remediation liabilities assumed in past acquisitions from the prior owners that include amounts estimated for site cleanup and monitoring activities arising from operations at refineries, certain terminals and pipelines, and retail stations prior to the dates of our acquisitions. Our environmental accruals are based on estimates including engineering assessments, and it is possible that our projections will change and that additional costs will be recorded as more information becomes available.

Our accruals for environmental expenditures totaled $212 million and $255 million at September 30, 2016 and December 31, 2015, respectively, including $18 million and $33 million for TLLP, respectively. These accruals include $167 million and $192 million at September 30, 2016 and December 31, 2015, respectively, related to amounts estimated for site cleanup activities arising from operations at our Martinez refinery and operations of assets acquired from BP’s integrated Southern California refining, marketing and logistics business (“Los Angeles Acquisition”) prior to their respective acquisition dates. We cannot reasonably determine the full extent of remedial activities that may be required at the Martinez refinery and for assets acquired in the Los Angeles Acquisition and it is possible that we will identify additional investigation and remediation costs for site cleanup activities as more information becomes available. The environmental remediation liabilities assumed in the Los Angeles Acquisition include amounts estimated for site cleanup activities and monitoring activities arising from operations at the Carson refinery, certain terminals and pipelines, and retail stations prior to our acquisition on June 1, 2013. These estimates for environmental liabilities are based on third-party assessments and available information. Our estimates for site cleanup activities reflect amounts for which we are responsible under applicable cost-sharing arrangements.

On October 17, 2016, the appellate court affirmed the July 10, 2015 order issued by the federal trial court denying coverage pursuant to an insurance policy for environmental remediation liabilities at our Martinez refinery. The insurer had filed a declaratory relief action challenging coverage of the primary policy assigned to us when we acquired the refinery. The primary and excess policies together provided for coverage up to $190 million for expenditures in excess of $50 million in self–insurance. The court's decision effectively denies coverage under both policies. While these environmental remediation liabilities are included in our accruals above, we have not recognized possible insurance recoveries under the policies. We are currently evaluating whether to pursue further challenging the decision.

OTHER CONTINGENCIES

On September 29, 2016, the U.S. Court for the Western District of Texas entered the Consent Decree in final settlement of EPA’s allegations that we violated certain Clean Air Act regulations at our Alaska, Washington, Martinez, North Dakota and Utah refineries. The settlement also resolves similar allegations relating to our former Hawaii refinery, which we sold in September 2013, and we have recognized $46 million as expense associated with discontinued operations prior to 2016 specifically related to the projects required at our former Hawaii refinery. The terms of the Consent Decree require Tesoro to make material capital expenditures. Prior to 2016 and for the nine months ended September 30, 2016, we have capitalized approximately $211 million and $55 million, respectively, for capital projects to satisfy requirements of the Consent Decree, including amounts capitalized for interest and labor. These expenditures have not been material to our financial position or liquidity in any previous year. The remaining capital expenditures will be primarily spent in 2016 and 2017 with additional amounts through 2019. The Consent Decree imposes a fine, which was previously accrued, paid in October and was not material to our financial statements, and certain funding of community projects that will be expensed as incurred in future periods. The remaining expenditures associated with the Consent Decree will not have a material impact on our liquidity, financial position or results of operations.

OTHER MATTERS

In the ordinary course of business, we become party to lawsuits, administrative proceedings and governmental investigations, including environmental, regulatory and other matters. Large, and sometimes unspecified, damages or penalties may be sought from us in some matters. We have not established accruals for these types of matters unless a loss is probable, and the amount of loss is currently estimable.

ENVIRONMENTAL. On October 26, 2016, the Utah Supreme Court rejected the Utah Physicians for a Healthy Environment’s and the Utah Chapter of the Sierra Club’s (“Petitioners”) challenge of an air permit issued by the Utah Department of Environmental Quality (“UDEQ”) to our Salt Lake City refinery in September 2012. Petitioners had filed a Request for Agency Action (the “Request”) with UDEQ challenging UDEQ’s permitting of our refinery conversion project alleging that the permit does not conform to the requirements of the Clean Air Act. After proceedings before an administrative law judge and the Executive Director of UDEQ’s subsequent dismissal of Petitioners’ Request, Petitioners filed a petition for review with the Utah Court of Appeals in December 2014, and the Court of Appeals certified the case to the Utah Supreme Court. While Petitioners have until November 9, 2016 to file a challenge to the Utah Supreme Court’s decision, we do not believe the final resolution of this matter will have a material adverse impact on our liquidity, financial position, or results of operations.

TAX.We are subject to extensive federal, state and foreign tax laws and regulations. Newly enacted tax laws and regulations, and changes in existing tax laws and regulations, could result in increased expenditures in the future. We are also subject to audits by federal, state and foreign taxing authorities in the normal course of business. It is possible that tax audits could result in claims against us in excess of recorded liabilities. However, we believe that resolution of any such claim(s) would not have a material impact on our liquidity, financial position or results of operations.

Upon a transfer of assets to TLLP, Tesoro historically has received a distribution of cash from partnership debt used to finance the transaction. This distribution has historically been treated as non-taxable loan proceeds to the extent of Tesoro’s 100% indemnity of such loan. New Federal Income Tax Regulations in effect for leveraged partnership transactions occurring on or after January 3, 2017, will reduce the amount treated as non-taxable loan proceeds to that portion equal to Tesoro’s partnership profit sharing ratio in TLLP. This could result in a taxable gain being recognized by Tesoro in a period when no such gain is recognized in the financial statements, causing an increase in the current portion of income tax expense.

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Stockholders' Equity and Earnings Per Share (Notes)

9 Months Ended

Sep. 30, 2016

Stockholders' Equity Attributable to Parent [Abstract]

STOCKHOLDERS' EQUITY AND EARNINGS PER SHARE

STOCKHOLDERS’ EQUITY AND EARNINGS PER SHARE

CHANGES TO EQUITY (in millions)

	Tesoro Corporation Stockholders’ Equity			Noncontrolling  Interest			Total Equity
Balance at December 31, 2015 (a)	$	5,213		$	2,527		$	7,740
Net earnings	656			103			759
Purchases of common stock	(242		)	—			(242		)
Dividend payments	(186		)	—			(186		)
Net effect of amounts related to equity-based compensation (b)	33			3			36
Effect of deconsolidation of RGS (c)	(2		)	(84		)	(86		)
Taxes paid related to net share settlement of equity awards	(25		)	—			(25		)
Net proceeds from issuance of Tesoro Logistics LP common units (d)	(2		)	366			364
Distributions to noncontrolling interest	—			(155		)	(155		)
Pension liability adjustment, net of tax	10			—			10
Transfers to (from) Tesoro paid-in capital related to:
TLLP’s issuance of common units	44			(72		)	(28		)
Other	1			7			8
Balance at September 30, 2016 (a)	$	5,500		$	2,695		$	8,195

(a) We have 5.0 million shares of preferred stock authorized with no par value per share. No shares of preferred stock were outstanding as of September 30, 2016 and December 31, 2015.

(b) We issued less than 0.1 million and approximately 0.3 million shares during the nine months ended September 30, 2016 and 2015, respectively, for proceeds of $2 million and $12 million, respectively, primarily for stock option exercises under our equity-based compensation plans. See Note 11 for more information on stock-based compensation.

(c) As a result of the reassessment performed in conjunction with the adoption of ASU 2015-02, we deconsolidated RGS, causing the derecognition of noncontrolling interest for the reporting of RGS as an equity method investment.

(d) Includes the closing of TLLP’s registered public offering of 6,325,000 common units representing limited partner interests at a public offering price of $47.13 per unit on June 10, 2016 as well as common units issued under TLLP’s continuous offering program during the nine months ended September 30, 2016.

EARNINGS PER SHARE

We compute basic earnings per share by dividing net earnings attributable to Tesoro Corporation stockholders by the weighted average number of common shares outstanding during the period. Diluted earnings per share include the effects of potentially dilutive shares outstanding during the period.

SHARES OUTSTANDING (in millions)

	Three Months Ended September 30,		Nine Months Ended September 30,
	2016	2015	2016	2015
Weighted average common shares outstanding	118.2	122.5	119.1	124.3
Common stock equivalents	1.1	1.3	1.3	1.4
Total Diluted Shares	119.3	123.8	120.4	125.7

Potentially dilutive common stock equivalents are excluded from the calculation of diluted earnings per share if the effect of including such securities in the calculation would have been anti-dilutive. Anti-dilutive securities were 0.4 million and 0.1 million for the three months ended September 30, 2016 and 2015, respectively, and 0.3 million and 0.6 million for the nine months ended September 30, 2016 and 2015, respectively.

SHARE REPURCHASES

We are authorized by our Board of Directors (the “Board”) to purchase shares of our common stock in open market transactions at our discretion. The Board’s authorization has no time limit and may be suspended or discontinued at any time. Purchases of our common stock can also be made to offset the dilutive effect of stock-based compensation awards and to meet our obligations under employee benefit and compensation plans, including the exercise of stock options and vesting of restricted stock and to fulfill other stock compensation requirements. During the nine months ended September 30, 2016 and 2015, we executed approximately 3.2 million and 5.5 million of share repurchases of our common stock for approximately $250 million and $494 million, respectively.

CASH DIVIDENDS

We paid cash dividends totaling $65 million and $186 million for the three and nine months ended September 30, 2016, respectively, based on a $0.55 per share and $0.50 per share quarterly cash dividend on common stock in the third and first two quarters, respectively. We paid cash dividends totaling $62 million and $169 million for the three and nine months ended September 30, 2015, respectively, based on a $0.50 per share and $0.425 per share quarterly cash dividend on common stock in the third and first two quarters, respectively. On October 31, 2016, our Board declared a cash dividend of $0.55 per share payable on December 15, 2016 to shareholders of record on November 30, 2016.

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Stock-Based Compensation (Notes)

9 Months Ended

Sep. 30, 2016

Share-based Compensation [Abstract]

STOCK-BASED COMPENSATION

STOCK-BASED COMPENSATION

STOCK-BASED COMPENSATION EXPENSE (BENEFIT) (in millions)

	Three Months Ended September 30,				Nine Months Ended September 30,
	2016		2015		2016			2015
Stock appreciation rights (a)	$	1	$	10	$	(14	)	$	20
Performance share awards (b)	3		3		7			9
Market stock units (c)	7		7		21			19
Other stock-based awards (d)	2		2		7			9
Total Stock-Based Compensation Expense	$	13	$	22	$	21		$	57

(a) We had $6 millionand $41 million recorded in other current liabilities associated with our stock appreciation rights (“SARs”) awards at September 30, 2016 and December 31, 2015, respectively. We paid cash of $21 million to settle 0.3 million SARs that were exercised during the nine months ended September 30, 2016 and $37 million to settle 0.5 million SARs that were exercised during the nine months ended September 30, 2015.

(b) We granted 0.1 million market condition performance share awards at a weighted average grant date fair value of $87.90 per share under the amended and restated 2011 Long-Term Incentive Plan (“2011 Plan”) during the nine months ended September 30, 2016.

(c) We granted 0.3 million market stock units at a weighted average grant date fair value of $84.84 per unit under the 2011 Plan during the nine months ended September 30, 2016.

(d) We have aggregated expenses for certain award types as they are not considered significant.

The income tax effect recognized in the income statement for stock-based compensation was a benefit of $5 million and $8 million for the three months ended September 30, 2016 and 2015, respectively, and a benefit of $23 million and $22 million for the nine months ended September 30, 2016 and 2015, respectively. Included in the tax benefit of $23 million for the nine months ended September 30, 2016, was $16 million of tax benefit attributable to excess tax benefits from exercises and vestings that occurred during the period, the effects of which were recorded to the income statement pursuant to ASU 2016-09. There was no tax benefit attributable to excess tax benefits from exercises and vestings for the three months ended September 30, 2016. The reduction in current taxes payable recognized from tax deductions resulting from exercises and vestings under all of our stock-based compensation arrangements totaled $1 million and $8 million for the three months ended September 30, 2016 and 2015, respectively, and $37 million and $71 million for the nine months ended September 30, 2016 and 2015, respectively.

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Operating Segments (Notes)

9 Months Ended

Sep. 30, 2016

Segment Reporting [Abstract]

OPERATING SEGMENTS

OPERATING SEGMENTS

Our refining segment owns and operates seven petroleum refineries located in California, Washington, Alaska, North Dakota and Utah that manufacture gasoline and gasoline blendstocks, jet fuel, diesel fuel, residual fuel oil and other refined products. We sell these refined products, together with refined products purchased from third parties, to our marketing segment through terminal facilities and other locations and opportunistically export refined products to foreign markets. TLLP’s assets and operations include certain crude oil gathering assets, natural gas gathering and processing assets and crude oil and refined products terminalling and transportation assets acquired from Tesoro and other third parties. Revenues from the TLLP segment are generated by charging fees for gathering crude oil and natural gas, for processing natural gas, and for terminalling, transporting and storing crude oil, and refined products. Tesoro’s marketing business supplies gasoline and diesel across 16 states through both branded and unbranded marketing channels. We utilize various operating models in the operation of our retail stations. Since we do not have significant operations in foreign countries, revenue generated and long-lived assets located in foreign countries are not material to our operations.

We evaluate the performance of our segments based primarily on segment operating income. Segment operating income includes those revenues and expenses that are directly attributable to management of the respective segment. TLLP and marketing revenues include intersegment transactions with our refining segment. Corporate depreciation and corporate general and administrative expenses are excluded from segment operating income.

TLLP acquired certain assets from our Refining segment, and the associated liabilities and results of operations are collectively referred to as the “Predecessors.” The accompanying segment information presents certain financial information of the Predecessors at historical cost. The financial statements of the 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 the Predecessors had been operated as a stand-alone business. The Predecessors did not record revenue for transactions with our Refining segment.

SEGMENT INFORMATION RELATED TO CONTINUING OPERATIONS

	Three Months Ended September 30,						Nine Months Ended September 30,
	2016			2015			2016			2015
	(In millions)
Revenues
Refining:
Refined products	$	5,641		$	6,817		$	15,434		$	19,867
Crude oil resales and other	257			172			710			780
TLLP:
Gathering	82			87			255			253
Processing	69			71			208			205
Terminalling and transportation	157			124			438			362
Marketing:
Fuel (a)	4,118			5,144			11,493			14,143
Other non-fuel	23			16			65			48
Intersegment sales	(3,803		)	(4,688		)	(10,673		)	(13,220		)
Total Revenues	$	6,544		$	7,743		$	17,930		$	22,438
Segment Operating Income
Refining (b)	$	52		$	899		$	475		$	1,843
TLLP (b) (c)	133			106			381			312
Marketing	273			379			661			724
Total Segment Operating Income	458			1,384			1,517			2,879
Corporate and unallocated costs (c)	(98		)	(92		)	(260		)	(238		)
Operating Income	360			1,292			1,257			2,641
Interest and financing costs, net	(70		)	(54		)	(190		)	(163		)
Equity in earnings of equity method investments	7			6			12			9
Other income, net	—			13			32			12
Earnings Before Income Taxes	$	297		$	1,257		$	1,111		$	2,499
Depreciation and Amortization Expenses
Refining	$	148		$	133		$	445		$	373
TLLP	45			45			134			133
Marketing	12			11			36			34
Corporate	6			3			18			13
Total Depreciation and Amortization Expenses	$	211		$	192		$	633		$	553
Capital Expenditures
Refining	$	153		$	152		$	409		$	483
TLLP	42			93			125			237
Marketing	3			8			22			20
Corporate	29			6			68			16
Total Capital Expenditures	$	227		$	259		$	624		$	756

(a) Federal and state motor fuel excise taxes on sales by our marketing segment at retail sites where we own the inventory are included in both revenues and cost of sales in our condensed statements of consolidated operations. These taxes totaled $146 million and $137 million for the three months ended September 30, 2016 and 2015, respectively, and $436 million and $423 million for the nine months ended September 30, 2016 and 2015, respectively.

(b) Adjusted for the historical results of the Predecessors.

(c) We present TLLP’s segment operating income net of general and administrative expenses totaling $12 million and $16 million representing TLLP’s corporate costs for the three months ended September 30, 2016 and 2015, respectively, and $37 million and $43 million for the nine months ended September 30, 2016 and 2015, respectively, which are not allocated by TLLP to its operating segments.

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Condensed Consolidating Financial Information (Notes)

9 Months Ended

Sep. 30, 2016

Condensed Financial Information of Parent Company Only Disclosure [Abstract]

CONDENSED CONSOLIDATING FINANCIAL INFORMATION

CONDENSED CONSOLIDATING FINANCIAL INFORMATION

Separate condensed consolidating financial information of Tesoro Corporation (the “Parent”), subsidiary guarantors and non-guarantors is presented below. At September 30, 2016, Tesoro and certain subsidiary guarantors have fully and unconditionally guaranteed our 4.250% Senior Notes due 2017, 5.375% Senior Notes due 2022, and 5.125% Senior Notes due 2024. TLLP, in which we had a 34% ownership interest as of September 30, 2016, and other subsidiaries have not guaranteed these obligations. As a result of these guarantee arrangements, we are required to present the following condensed consolidating financial information, which should be read in conjunction with the accompanying condensed consolidated financial statements and notes thereto. This information is provided as an alternative to providing separate financial statements for guarantor subsidiaries. Separate financial statements of Tesoro’s subsidiary guarantors are not included because the guarantees are full and unconditional and these subsidiary guarantors are 100% owned and are jointly and severally liable for Tesoro’s outstanding senior notes. The information is presented using the equity method of accounting for investments in subsidiaries. Certain intercompany and intracompany transactions between subsidiaries are presented gross and eliminated in the consolidating adjustments column. Additionally, the results of operations of the Hawaii Business have been reported as discontinued operations in these condensed consolidating statements of operations and comprehensive income for the three and nine months ended September 30, 2016 and September 30, 2015.

CONDENSED CONSOLIDATING STATEMENT OF OPERATIONS

FOR THE THREE MONTHS ENDEDSEPTEMBER 30, 2016

(In millions)

	Parent			Guarantor Subsidiaries			Non- Guarantors			Consolidating Adjustments			Consolidated
Revenues	$	—		$	7,136		$	850		$	(1,442	)	$	6,544
Costs and Expenses
Cost of sales (excluding the lower of cost or market inventory valuation adjustment)	—			6,059			533			(1,360		)	5,232
Lower of cost or market inventory valuation adjustment	—			(20		)	—			—			(20		)
Operating, selling, general and administrative expenses	2			696			143			(82		)	759
Depreciation and amortization expenses	—			165			46			—			211
Loss on asset disposals and impairments	—			1			1			—			2
Operating Income (Loss)	(2		)	235			127			—			360
Interest and financing costs, net	(16		)	(20		)	(34		)	—			(70		)
Equity in earnings of subsidiaries	185			43			—			(228		)	—
Equity in earnings of equity method investments	—			4			3			—			7
Other income (expense), net	(1		)	1			—			—			—
Earnings Before Income Taxes	166			263			96			(228		)	297
Income tax expense (benefit) (a)	(4		)	75			24			—			95
Net Earnings from Continuing Operations	170			188			72			(228		)	202
Loss from discontinued operations, net of tax	(1		)	—			—			—			(1		)
Net Earnings	169			188			72			(228		)	201
Less: Net earnings from continuing operations attributable to noncontrolling interest	—			—			32			—			32
Net Earnings Attributable to Tesoro Corporation	$	169		$	188		$	40		$	(228	)	$	169
Comprehensive Income
Total comprehensive income	$	169		$	188		$	72		$	(228	)	$	201
Less: Noncontrolling interest in comprehensive income	—			—			32			—			32
Comprehensive Income Attributable to Tesoro Corporation	$	169		$	188		$	40		$	(228	)	$	169

(a) The income tax expense (benefit) reflected in each column does not include any tax effect of the equity in earnings from corporate subsidiaries, but does include the tax effect of the corporate partners’ share of partnership income.

CONDENSED CONSOLIDATING STATEMENT OF OPERATIONS

FOR THE THREE MONTHS ENDEDSEPTEMBER 30, 2015

(In millions)

	Parent			Guarantor Subsidiaries			Non- Guarantors			Consolidating Adjustments			Consolidated
Revenues	$	—		$	8,574		$	1,054		$	(1,885	)	$	7,743
Costs and Expenses
Cost of sales (excluding the lower of cost or market inventory valuation adjustment)	—			6,491			748			(1,810		)	5,429
Lower of cost or market inventory valuation adjustment	—			83			—			—			83
Operating, selling, general and administrative expenses	2			674			142			(75		)	743
Depreciation and amortization expenses	—			146			46			—			192
Loss on asset disposals and impairments	—			4			—			—			4
Operating Income (Loss)	(2		)	1,176			118			—			1,292
Interest and financing costs, net	(11		)	(17		)	(26		)	—			(54		)
Equity in earnings of subsidiaries	776			32			—			(808		)	—
Equity in earnings of equity method investments	—			4			2			—			6
Other income, net	—			13			—			—			13
Earnings Before Income Taxes	763			1,208			94			(808		)	1,257
Income tax expense (a)	4			445			9			—			458
Net Earnings	759			763			85			(808		)	799
Less: Net earnings from continuing operations attributable to noncontrolling interest	—			—			40			—			40
Net Earnings Attributable to Tesoro Corporation	$	759		$	763		$	45		$	(808	)	$	759
Comprehensive Income
Total comprehensive income	$	759		$	763		$	85		$	(808	)	$	799
Less: Noncontrolling interest in comprehensive income	—			—			40			—			40
Comprehensive Income Attributable to Tesoro Corporation	$	759		$	763		$	45		$	(808	)	$	759

(a) The income tax expense reflected in each column does not include any tax effect of the equity in earnings from corporate subsidiaries, but does include the tax effect of the corporate partners’ share of partnership income.

CONDENSED CONSOLIDATING STATEMENT OF OPERATIONS

FOR THE NINE MONTHS ENDEDSEPTEMBER 30, 2016

(In millions)

	Parent			Guarantor Subsidiaries			Non- Guarantors			Consolidating Adjustments			Consolidated
Revenues	$	—		$	19,664		$	2,401		$	(4,135	)	$	17,930
Costs and Expenses
Cost of sales (excluding the lower of cost or market inventory valuation adjustment)	—			16,479			1,528			(3,893		)	14,114
Lower of cost or market inventory valuation adjustment	—			(237		)	1			—			(236		)
Operating, selling, general and administrative expenses	6			1,986			405			(242		)	2,155
Depreciation and amortization expenses	—			495			138			—			633
Loss on asset disposals and impairments	—			4			3			—			7
Operating Income (Loss)	(6		)	937			326			—			1,257
Interest and financing costs, net	(43		)	(52		)	(95		)	—			(190		)
Equity in earnings of subsidiaries	686			146			—			(832		)	—
Equity in earnings of equity method investments	—			2			10			—			12
Other income, net	1			25			6			—			32
Earnings Before Income Taxes	638			1,058			247			(832		)	1,111
Income tax expense (benefit) (a)	(8		)	330			40			—			362
Net Earnings from Continuing Operations	646			728			207			(832		)	749
Earnings from discontinued operations, net of tax	10			—			—			—			10
Net Earnings	656			728			207			(832		)	759
Less: Net earnings from continuing operations attributable to noncontrolling interest	—			—			103			—			103
Net Earnings Attributable to Tesoro Corporation	$	656		$	728		$	104		$	(832	)	$	656
Comprehensive Income
Total comprehensive income	$	646		$	728		$	207		$	(832	)	$	749
Less: Noncontrolling interest in comprehensive income	—			—			103			—			103
Comprehensive Income Attributable to Tesoro Corporation	$	646		$	728		$	104		$	(832	)	$	646

(a) The income tax expense (benefit) reflected in each column does not include any tax effect of the equity in earnings from corporate subsidiaries, but does include the tax effect of the corporate partners’ share of partnership income.

CONDENSED CONSOLIDATING STATEMENT OF OPERATIONS

FOR THE NINE MONTHS ENDEDSEPTEMBER 30, 2015

(In millions)

	Parent			Guarantor Subsidiaries			Non- Guarantors			Consolidating Adjustments			Consolidated
Revenues	$	—		$	24,573		$	2,718		$	(4,853	)	$	22,438
Costs and Expenses
Cost of sales (excluding the lower of cost or market inventory valuation adjustment)	—			19,862			1,874			(4,646		)	17,090
Lower of cost or market inventory valuation adjustment	—			41			—			—			41
Operating, selling, general and administrative expenses	8			1,889			411			(207		)	2,101
Depreciation and amortization expenses	—			416			137			—			553
Loss on asset disposals and impairments	—			12			—			—			12
Operating Income (Loss)	(8		)	2,353			296			—			2,641
Interest and financing costs, net	(32		)	(52		)	(79		)	—			(163		)
Equity in earnings of subsidiaries	1,527			85			—			(1,612		)	—
Equity in earnings of equity method investments	—			3			6			—			9
Other income, net	1			11			—			—			12
Earnings Before Income Taxes	1,488			2,400			223			(1,612		)	2,499
Income tax expense (benefit) (a)	(2		)	870			20			—			888
Net Earnings from Continuing Operations	1,490			1,530			203			(1,612		)	1,611
Loss from discontinued operations, net of tax	(4		)	—			—			—			(4		)
Net Earnings	1,486			1,530			203			(1,612		)	1,607
Less: Net earnings from continuing operations attributable to noncontrolling interest	—			—			121			—			121
Net Earnings Attributable to Tesoro Corporation	$	1,486		$	1,530		$	82		$	(1,612	)	$	1,486
Comprehensive Income
Total comprehensive income	$	1,486		$	1,530		$	203		$	(1,612	)	$	1,607
Less: Noncontrolling interest in comprehensive income	—			—			121			—			121
Comprehensive Income Attributable to Tesoro Corporation	$	1,486		$	1,530		$	82		$	(1,612	)	$	1,486

(a) The income tax expense (benefit) reflected in each column does not include any tax effect of the equity in earnings from corporate subsidiaries, but does include the tax effect of the corporate partners’ share of partnership income.

CONDENSED CONSOLIDATING BALANCE SHEET

AS OF SEPTEMBER 30, 2016

(In millions)

	Parent		Guarantor Subsidiaries		Non- Guarantors		Consolidating Adjustments			Consolidated
ASSETS
Current Assets
Cash and cash equivalents	$	—	$	846	$	541	$	—		$	1,387
Receivables, net of allowance for doubtful accounts	7		844		186		—			1,037
Short-term receivables from affiliates	—		66		17		(83		)	—
Inventories, net	—		2,136		181		—			2,317
Prepayments and other current assets	47		277		40		—			364
Total Current Assets	54		4,169		965		(83		)	5,105
Property, Plant and Equipment, Net	—		6,498		3,271		—			9,769
Investment in Subsidiaries	9,125		619		—		(9,744		)	—
Long-Term Receivables from Affiliates	1,454		—		—		(1,454		)	—
Long-Term Intercompany Note Receivable	—		—		2,026		(2,026		)	—
Acquired Intangibles, Net	—		316		971		—			1,287
Other Noncurrent Assets, Net	46		1,301		502		(5		)	1,844
Total Assets	$	10,679	$	12,903	$	7,735	$	(13,312	)	$	18,005
LIABILITIES AND EQUITY
Current Liabilities
Accounts payable	$	1	$	1,393	$	153	$	—		$	1,547
Short-term payables to affiliates	—		17		66		(83		)	—
Other current liabilities	125		860		161		—			1,146
Total Current Liabilities	126		2,270		380		(83		)	2,693
Long-Term Payables to Affiliates	—		1,223		231		(1,454		)	—
Deferred Income Taxes	1,443		—		—		(5		)	1,438
Debt, Net of Unamortized Issuance Costs	1,189		39		3,439		—			4,667
Other Noncurrent Liabilities	395		568		49		—			1,012
Long-Term Intercompany Note Payable	2,026		—		—		(2,026		)	—
Equity-Tesoro Corporation	5,500		8,803		941		(9,744		)	5,500
Equity-Noncontrolling Interest	—		—		2,695		—			2,695
Total Liabilities and Equity	$	10,679	$	12,903	$	7,735	$	(13,312	)	$	18,005

CONDENSED CONSOLIDATING BALANCE SHEET

AS OF DECEMBER 31, 2015

(In millions)

	Parent		Guarantor Subsidiaries		Non- Guarantors		Consolidating Adjustments			Consolidated
ASSETS
Current Assets
Cash and cash equivalents	$	—	$	895	$	47	$	—		$	942
Receivables, net of allowance for doubtful accounts	—		626		166		—			792
Short-term receivables from affiliates	—		197		—		(197		)	—
Inventories, net	—		1,971		331		—			2,302
Prepayments and other current assets	116		140		16		(1		)	271
Total Current Assets	116		3,829		560		(198		)	4,307
Property, Plant and Equipment, Net	—		6,010		3,531		—			9,541
Investment in Subsidiaries	8,133		509		—		(8,642		)	—
Long-Term Receivables from Affiliates	1,517		—		—		(1,517		)	—
Long-Term Intercompany Note Receivable	—		—		1,626		(1,626		)	—
Acquired Intangibles, Net	—		234		977		—			1,211
Other Noncurrent Assets, Net	33		1,026		219		(5		)	1,273
Total Assets	$	9,799	$	11,608	$	6,913	$	(11,988	)	$	16,332
LIABILITIES AND EQUITY
Current Liabilities
Accounts payable	$	—	$	1,412	$	156	$	—		$	1,568
Short-term payables to affiliates	—		—		197		(197		)	—
Other current liabilities	91		773		99		(1		)	962
Total Current Liabilities	91		2,185		452		(198		)	2,530
Long-Term Payables to Affiliates	—		1,375		142		(1,517		)	—
Deferred Income Taxes	1,227		—		—		(5		)	1,222
Debt, Net of Unamortized Issuance Costs	1,190		33		2,844		—			4,067
Other Noncurrent Liabilities	452		271		50		—			773
Long-Term Intercompany Note Payable	1,626		—		—		(1,626		)	—
Equity-Tesoro Corporation	5,213		7,744		898		(8,642		)	5,213
Equity-Noncontrolling Interest	—		—		2,527		—			2,527
Total Liabilities and Equity	$	9,799	$	11,608	$	6,913	$	(11,988	)	$	16,332

CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS

FOR THE NINE MONTHS ENDEDSEPTEMBER 30, 2016

(In millions)

	Parent			Guarantor Subsidiaries			Non- Guarantors			Consolidating Adjustments			Consolidated
Cash Flows From (Used In) Operating Activities
Net cash from (used in) operating activities	$	(20	)	$	687		$	534		$	—		$	1,201
Cash Flows From (Used In) Investing Activities
Capital expenditures	—			(484		)	(139		)	—			(623		)
Acquisition, net of cash	—			(360		)	(52		)	—			(412		)
Proceeds from asset sales	17			1			—			—			18
Intercompany notes, net	349			—			—			(349		)	—
Notes to General Partner	—			—			(400		)	400			—
Investment in subsidiaries	(319		)	(106		)	—			425			—
Other investing activities	—			—			(3		)	—			(3		)
Net cash from (used in) investing activities	47			(949		)	(594		)	476			(1,020		)
Cash Flows From (Used In) Financing Activities
Borrowings under revolving credit agreements	—			—			761			—			761
Repayments on revolving credit agreements	—			—			(666		)	—			(666		)
Proceeds from debt offering	—			—			701			—			701
Repayments of debt	—			(6		)	(252		)	—			(258		)
Dividend payments	(186		)	—			—			—			(186		)
Net proceeds from issuance of Tesoro Logistics LP common units	—			—			364			—			364
Notes from General Partner	400			—			—			(400		)	—
Distributions to noncontrolling interest	—			—			(155		)	—			(155		)
Purchases of common stock	(242		)	—			—			—			(242		)
Taxes paid related to net share settlement of equity awards	(25		)	—			—			—			(25		)
Net intercompany repayments	—			(117		)	(232		)	349			—
Contribution by parent	—			319			106			(425		)	—
Distributions to TLLP unitholders and general partner	38			17			(55		)	—			—
Other financing activities	(12		)	—			(18		)	—			(30		)
Net cash from (used in) financing activities	(27		)	213			554			(476		)	264
Increase (Decrease) in Cash And Cash Equivalents	—			(49		)	494			—			445
Cash and Cash Equivalents, Beginning of Period	—			895			47			—			942
Cash and Cash Equivalents, End of Period	$	—		$	846		$	541		$	—		$	1,387

CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS

FOR THE NINE MONTHS ENDEDSEPTEMBER 30, 2015

(In millions)

	Parent			Guarantor Subsidiaries			Non- Guarantors			Consolidating Adjustments			Consolidated
Cash Flows From (Used In) Operating Activities
Net cash from (used in) operating activities	$	(16	)	$	1,481		$	382		$	—		$	1,847
Cash Flows From (Used In) Investing Activities
Capital expenditures	—			(527		)	(246		)	—			(773		)
Acquisitions	—			—			(6		)	—			(6		)
Intercompany notes, net	1,077			—			—			(1,077		)	—
Other investing activities	—			(4		)	—			—			(4		)
Net cash from (used in) investing activities	1,077			(531		)	(252		)	(1,077		)	(783		)
Cash Flows From (Used In) Financing Activities
Borrowings under revolving credit agreements	—			—			346			—			346
Repayments on revolving credit agreements	—			—			(326		)	—			(326		)
Repayments of debt	(398		)	(4		)	—			—			(402		)
Dividend payments	(169		)	—			—			—			(169		)
Net proceeds from issuance of Tesoro Logistics LP common units	—			—			71			—			71
Distributions to noncontrolling interest	—			—			(135		)	—			(135		)
Purchases of common stock	(494		)	—			—			—			(494		)
Taxes paid related to net share settlement of equity awards	(45		)	—			—			—			(45		)
Net intercompany repayments	—			(998		)	(79		)	1,077			—
Distributions to TLLP unitholders and general partner	33			(2		)	(31		)	—			—
Other financing activities	12			37			—			—			49
Net cash used in financing activities	(1,061		)	(967		)	(154		)	1,077			(1,105		)
Decrease in Cash And Cash Equivalents	—			(17		)	(24		)	—			(41		)
Cash and Cash Equivalents, Beginning of Period	—			943			57			—			1,000
Cash and Cash Equivalents, End of Period	$	—		$	926		$	33		$	—		$	959

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Basis of Presentation (Policies)

9 Months Ended

Sep. 30, 2016

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Basis of presentation and significant accounting policies

We prepare our condensed consolidated financial statements in conformity with U.S. GAAP, which requires management to make estimates and assumptions that affect the reported amounts and disclosures of assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the periods presented.

Use of estimates policy

We review our estimates on an ongoing basis. Changes in facts and circumstances may result in revised estimates and actual results could differ from those estimates. The results of operations for any interim period are not necessarily indicative of results for the full year. Certain prior year balances have been aggregated or disaggregated in order to conform to the current year presentation.

Consolidation of variable interest entity policy

Our condensed consolidated financial statements include TLLP, a variable interest entity. TLLP is a publicly traded limited partnership that was formed to own, operate, develop and acquire logistics assets. Its assets are integral to the success of Tesoro’s refining and marketing operations and are used to gather crude oil and natural gas, process natural gas, and distribute, transport and store crude oil and refined products. TLLP provides us with various terminal distribution, storage, pipeline transportation, natural gas liquids processing, trucking and petroleum-coke handling services under long-term, fee-based commercial agreements. Many of these agreements, with the exception of the storage and transportation services agreement, contain minimum volume commitments. We do not provide financial or equity support through any liquidity arrangements or financial guarantees to TLLP.

Tesoro Logistics GP, LLC (“TLGP”), our wholly-owned subsidiary, serves as the general partner of TLLP. We held an approximate 34% and 36% interest in TLLP at September 30, 2016 and December 31, 2015, respectively, including the general partner interest (approximately 2% at both September 30, 2016 and December 31, 2015) and all of the incentive distribution rights. This interest at September 30, 2016 includes 33,194,109 common units and 2,083,330 general partner units. As the general partner of TLLP, we have the sole ability to direct the activities of TLLP that most significantly impact its economic performance. We are also considered to be the primary beneficiary for accounting purposes and are TLLP’s primary customer. In the event TLLP incurs a loss, our operating results will reflect TLLP’s loss, net of intercompany eliminations. Under our various long-term, fee-based commercial agreements with TLLP, transactions with us accounted for 60% and 58% of TLLP’s total revenues for the three and nine months ended September 30, 2016, respectively, and 54% and 55% of TLLP’s total revenues for the three and nine months ended September 30, 2015, respectively.

New Accounting Pronouncements, Policy

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, “Deferral of the Effective Date, “ASU 2016-08, “Principal versus Agent Considerations (Reporting Revenue Gross versus Net),” ASU 2016-10, “Identifying Performance Obligations and Licensing,” and ASU 2016-12, “Narrow-Scope Improvements and Practical Expedients.” These standards provide accounting guidance for all revenue arising from contracts to provide goods or services to customers. ASU 2014-09 is effective for interim and annual periods beginning after December 15, 2017. Early adoption as of January 1, 2017 is permitted; however, we do not intend to adopt early. The standard allows for either full retrospective adoption or modified retrospective adoption. We are currently evaluating the impact of the standard on our financial statements and related disclosures. Based on our initial evaluation, the adoption of the standard is not expected to have a material impact on the amount or timing of revenue recognized.

CONSOLIDATION.In February 2015, the FASB issued ASU 2015-02, “Amendments to the Consolidation Analysis” (“ASU 2015-02”). This standard modifies existing consolidation guidance for reporting organizations that are required to evaluate whether they should consolidate certain legal entities. ASU 2015-02 is effective for interim and annual periods beginning after December 15, 2015, and requires either a retrospective or a modified retrospective approach to adoption. We adopted this guidance using the modified retrospective approach as of January 1, 2016 and performed the required reassessments outlined by the guidance. For further information on the results of the reassessments, refer to Note 4, Investments - Equity Method and Joint Ventures.

BUSINESS COMBINATIONS.In September 2015, the FASB issued ASU 2015-16, “Simplifying the Accounting for Measurement-Period Adjustments” (“ASU 2015-16”). The standard requires an acquirer to recognize the cumulative impact of adjustments to provisional purchase price amounts that are identified during the measurement period in the reporting period, in which the adjustment amounts are determined. The standard also requires an entity to present separately on the face of the income statement or disclose in the notes the portion of the amount recorded in current-period earnings by line item that would have been recorded in previous reporting periods if the adjustment to the provisional amounts had been recognized as of the acquisition date. ASU 2015-16 is effective for interim and annual periods beginning after December 15, 2015 and must be applied prospectively to adjustments that occur after the effective date. We adopted this guidance as of January 1, 2016 with no impact to our financial statements.

LEASES.In February 2016, the FASB issued ASU 2016-02, “Leases” (“ASU 2016-02”), which improves transparency and comparability among organizations by requiring lessees to recognize a lease liability and a corresponding lease asset for virtually all lease contracts. It also requires additional disclosures about leasing arrangements. ASU 2016-02 is effective for interim and annual periods beginning after December 15, 2018, and requires a modified retrospective approach to adoption. Early adoption is permitted. At this time, we are evaluating the potential impact of this standard on our financial statements.

SHARE-BASED COMPENSATION. In March 2016, the FASB issued ASU 2016-09, “Improvements to Employee Share-Based Payment Accounting” (“ASU 2016-09”), which simplifies several aspects of the accounting for employee share-based payment transactions including accounting for income taxes, cash flow presentation of tax impacts, forfeitures, and liability versus equity accounting due to statutory tax withholding requirements. ASU 2016-09 is effective for interim and annual periods beginning after December 15, 2016, with early adoption permitted. As of January 1, 2016, we early adopted ASU 2016-09 and with respect to the guidance on forfeitures, we have elected to continue to estimate forfeitures on the date of grant to account for the estimated number of awards for which the requisite service period will not be rendered. The adoption of ASU 2016-09 had a $16 million impact for the nine months ended September 30, 2016, resulting in a lower effective tax rate and immaterial changes to our cash flow presentation. There was no additional benefit related to additional share vestings during the three months ended September 30, 2016.

STATEMENT OF CASH FLOWS. In August 2016, the FASB issued ASU 2016-15, “Clarification of Certain Cash Receipts and Cash Payments” (“ASU 2016-15”), which eliminates the diversity in practice related to the classification of certain cash receipts and payments in the statement of cash flows, by adding or clarifying guidance on eight specific cash flow issues. ASU 2016-15 is effective for interim and annual reporting periods beginning after December 15, 2017, with early adoption permitted. The amendments in this update should be applied retrospectively to all periods presented, unless deemed impracticable, in which case, prospective application is permitted. At this time, we are evaluating the potential impact of this standard on our financial statements.

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Inventories Inventories (Policies)

9 Months Ended

Sep. 30, 2016

Inventory Disclosure [Abstract]

Inventory, Policy [Policy Text Block]

We recorded a lower of cost or market reserve of $123 million and $359 million at September 30, 2016 and December 31, 2015, respectively, to cost of sales for our crude oil, refined products, oxygenates and by-product inventories to adjust the carrying value of our inventories to reflect replacement cost as of those reporting dates. We reverse any lower of cost or market reserve in the subsequent period because the inventories are sold or used and then perform a complete lower of cost or market assessment of ending inventories at the end of each reporting period to determine if a reserve is required.

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Property, Plant and Equipment Property, Plant and Equipment (Policies)

9 Months Ended

Sep. 30, 2016

Property, Plant and Equipment [Abstract]

Interest capitalization policy

We capitalize interest as part of the cost of major projects during the construction period. Capitalized interest totaled $8 millionand $9 million for the three months ended September 30, 2016 and 2015, respectively, and $20 million and $27 million for the nine months ended September 30, 2016 and 2015, respectively, and is recorded as a reduction to net interest and financing costs in our condensed statements of consolidated operations.

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Derivative Instruments (Policies)

9 Months Ended

Sep. 30, 2016

General Discussion of Derivative Instruments and Hedging Activities [Abstract]

Derivatives, Offsetting Fair Value Amounts, Policy [Policy Text Block]

We offset both the fair value amounts and any related cash collateral amounts recognized for multiple derivative instruments executed with the same counterparty when there is a legally enforceable right and an intention to settle net or simultaneously.

Derivatives, policy

Our accounting for derivative instruments depends on whether the underlying commodity will be used or sold in the normal course of business. For contracts where the crude oil or refined products are expected to be used or sold in the normal course of business, we apply the normal purchase normal sale exception and follow the accrual method of accounting. All other derivative instruments are recorded at fair value using mark-to-market accounting.

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Fair Value Measurements (Policies)

9 Months Ended

Sep. 30, 2016

Fair Value Disclosures [Abstract]

Fair value of financial instruments policy

We classify financial assets and liabilities according to the fair value hierarchy. Financial assets and liabilities classified as level 1 instruments are valued using quoted prices in active markets for identical assets and liabilities. Level 2 instruments are valued using quoted prices for similar assets and liabilities in active markets, and inputs other than quoted prices, such as liquidity, that are observable for the asset or liability. Our level 2 instruments include derivatives valued using market quotations from independent price reporting agencies, third-party brokers and commodity exchange price curves that are corroborated with market data. Level 3 instruments are valued using significant unobservable inputs that are not supported by sufficient market activity.

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Commitments and Contingencies Commitments and Contingencies (Policies)	9 Months Ended
	Sep. 30, 2016
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies, Policy [Policy Text Block]	Our environmental accruals are based on estimates including engineering assessments, and it is possible that our projections will change and that additional costs will be recorded as more information becomes available. Large, and sometimes unspecified, damages or penalties may be sought from us in some matters. We have not established accruals for these types of matters unless a loss is probable, and the amount of loss is currently estimable.

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Inventories (Tables)

9 Months Ended

Sep. 30, 2016

Inventory Disclosure [Abstract]

Schedule of inventory, current

COMPONENTS OF INVENTORIES (in millions)

	September 30, 2016			December 31, 2015
Domestic crude oil and refined products	$	2,050		$	2,142
Foreign subsidiary crude oil	159			325
Materials and supplies	150			140
Oxygenates and by-products	81			54
Less: Lower of cost or market reserve	(123		)	(359		)
Total Inventories, Net	$	2,317		$	2,302

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Property, Plant and Equipment (Tables)

9 Months Ended

Sep. 30, 2016

Property, Plant and Equipment [Abstract]

Property, plant and equipment

PROPERTY, PLANT AND EQUIPMENT, AT COST (in millions)

	September 30, 2016			December 31, 2015
Refining	$	8,210		$	7,457
TLLP	3,642			3,894
Marketing	929			915
Corporate	381			296
Property, Plant and Equipment, at Cost	13,162			12,562
Accumulated depreciation	(3,393		)	(3,021		)
Property, Plant and Equipment, Net	$	9,769		$	9,541

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Equity Method Investments Equity Method Investments(Tables)

9 Months Ended

Sep. 30, 2016

Schedule of Equity Method Investments [Abstract]

Equity method investments

EQUITY METHOD INVESTMENTS (in millions)

	Watson			Vancouver Energy			TLLP
							RGS			TRG			UBFS			Total
Balance at December 31, 2015	$	92		$	9		$	—		$	42		$	16		$	159
Effect of deconsolidation (a)	—			—			295			—			—			295
Effect of consolidation (b)	—			(8		)	—			—			—			(8		)
Equity in earnings (loss)	3			(1		)	6			2			2			12
Distributions received	(5		)	—			(16		)	(3		)	(2		)	(26		)
Balance at September 30, 2016	$	90		$	—		$	285		$	41		$	16		$	432

(a) The reassessment of the investments performed by TLLP resulted in the deconsolidation of RGS and the reporting of RGS as an equity method investment. TLLP recognized an increase of $295 million to equity method investments as of January 1, 2016 as a result of the deconsolidation in addition to a cumulative effect reduction to opening equity of $2 million related to the difference in earnings under the equity method of accounting in prior periods. The carrying amount of our investment in RGS exceeded the underlying equity in net assets by $137 million at September 30, 2016.

(b) Effective September 1, 2016, we became majority owner of our venture with Savage Companies to construct, own and operate a unit train unloading and marine loading terminal at Port of Vancouver, USA (the “Vancouver Energy” terminal). As a result, Vancouver Energy was consolidated.

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Derivative Instruments (Tables)

9 Months Ended

Sep. 30, 2016

General Discussion of Derivative Instruments and Hedging Activities [Abstract]

Schedule of derivative instruments in Balance Sheet, fair value

DERIVATIVE ASSETS AND LIABILITIES (in millions)

		Derivative Assets						Derivative Liabilities
	Balance Sheet Location	September 30, 2016			December 31, 2015			September 30, 2016			December 31, 2015
Commodity Futures Contracts	Prepayments and other current assets	$	718		$	711		$	721		$	673
Commodity Swap Contracts	Prepayments and other current assets	7			15			7			14
Commodity Swap Contracts	Receivables	2			7			—			—
Commodity Forward Contracts	Receivables	3			2			—			—
Commodity Forward Contracts	Accounts payable	—			—			2			4
Total Gross Mark-to-Market Derivatives		730			735			730			691
Less: Counterparty Netting and Cash Collateral (a)		(696		)	(675		)	(723		)	(687		)
Total Net Fair Value of Derivatives		$	34		$	60		$	7		$	4

(a) Certain of our derivative contracts, under master netting arrangements, include both asset and liability positions. We offset both the fair value amounts and any related cash collateral amounts recognized for multiple derivative instruments executed with the same counterparty when there is a legally enforceable right and an intention to settle net or simultaneously. As of September 30, 2016 and December 31, 2015, we had provided cash collateral amounts of $27 million and $12 million, respectively, related to our unrealized derivative positions. Cash collateral amounts are netted with mark-to-market derivative assets.

Schedule of mark-to-market derivatives

GAINS (LOSSES) ON MARK-TO-MARKET DERIVATIVES (in millions)

	Three Months Ended September 30,					Nine Months Ended September 30,
	2016		2015			2016			2015
Commodity Contracts	$	19	$	153		$	(25	)	$	122
Foreign Currency Forward Contracts	—		(3		)	1			(5		)
Total Gain (Loss) on Mark-to-Market Derivatives	$	19	$	150		(24		)	$	117

INCOME STATEMENT LOCATION OF GAINS (LOSSES) ON MARK-TO-MARKET DERIVATIVES (in millions)

	Three Months Ended September 30,					Nine Months Ended September 30,
	2016		2015			2016			2015
Revenues	$	10	$	30		$	5		$	28
Cost of sales	9		123			(30		)	94
Other income (expense), net	—		(3		)	1			(5		)
Total Gain (Loss) on Mark-to-Market Derivatives	$	19	$	150		$	(24	)	$	117

Schedule of open long (short) positions

OUTSTANDING COMMODITY AND OTHER CONTRACTS (units in thousands)

	Contract Volumes by Year of Maturity			Unit of Measure
Mark-to-Market Derivative Instrument	2016	2017	2018
Crude oil, refined products and blending products:
Futures - short	—	(4,854)	(75)	Barrels
Futures - long	2,720	—	—	Barrels
Swaps - short	(2,225)	—	—	Barrels
Forwards - short	(970)	—	—	Barrels
Carbon emissions credits:
Futures - long	4,850	1,000	—	Tons
Corn:
Futures - short	(3,245)	—	—	Bushels

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Fair Value Measurements (Tables)

9 Months Ended

Sep. 30, 2016

Fair Value Disclosures [Abstract]

Schedule of fair value, assets and liabilities measured on recurring basis

FINANCIAL ASSETS AND LIABILITIES AT FAIR VALUE (in millions)

	September 30, 2016
	Level 1		Level 2		Level 3		Netting and Collateral (a)			Total
Assets:
Commodity Futures Contracts	$	716	$	2	$	—	$	(689	)	$	29
Commodity Swap Contracts	—		9		—		(7		)	2
Commodity Forward Contracts	—		3		—		—			3
Total Assets	$	716	$	14	$	—	$	(696	)	$	34
Liabilities:
Commodity Futures Contracts	$	719	$	2	$	—	$	(716	)	$	5
Commodity Swap Contracts	—		7		—		(7		)	—
Commodity Forward Contracts	—		2		—		—			2
Environmental Credit Obligations	—		186		—		—			186
Total Liabilities	$	719	$	197	$	—	$	(723	)	$	193

	December 31, 2015
	Level 1		Level 2		Level 3		Netting and Collateral (a)			Total
Assets:
Commodity Futures Contracts	$	711	$	—	$	—	$	(660	)	$	51
Commodity Swap Contracts	—		22		—		(15		)	7
Commodity Forward Contracts	—		2		—		—			2
Total Assets	$	711	$	24	$	—	$	(675	)	$	60
Liabilities:
Commodity Futures Contracts	$	673	$	—	$	—	$	(673	)	$	—
Commodity Swap Contracts	—		14		—		(14		)	—
Commodity Forward Contracts	—		4		—		—			4
Environmental Credit Obligations	—		40		—		—			40
Total Liabilities	$	673	$	58	$	—	$	(687	)	$	44

(a) Certain of our derivative contracts, under master netting arrangements, include both asset and liability positions. We offset both the fair value amounts and any related cash collateral amounts recognized for multiple derivative instruments executed with the same counterparty when there is a legally enforceable right and an intention to settle net or simultaneously. As of September 30, 2016 and December 31, 2015, we had provided cash collateral amounts of $27 million and $12 million, respectively, related to our unrealized derivative positions. Cash collateral amounts are netted with mark-to-market derivative assets.

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Debt (Tables)

9 Months Ended

Sep. 30, 2016

Debt Disclosure [Abstract]

Schedule of Debt

DEBT BALANCE, NET OF UNAMORTIZED ISSUANCE COSTS (in millions)

	September 30, 2016			December 31, 2015
Total debt (a)	$	4,764		$	4,147
Unamortized issuance costs (b)	(82		)	(74		)
Current maturities	(15		)	(6		)
Debt, Net of Current Maturities and Unamortized Issuance Costs	$	4,667		$	4,067

(a) Total debt related to TLLP, which is non-recourse to Tesoro, except for TLGP, was $3.4 billion and $2.9 billion at September 30, 2016 and December 31, 2015, respectively.

(b) Includes unamortized premiums of $4 million associated with TLLP’s senior notes at both September 30, 2016 and December 31, 2015.

Schedule of Line of Credit Facilities

AVAILABLE CAPACITY UNDER CREDIT FACILITIES (in millions)

	Total Capacity		Amount Borrowed as of September 30, 2016		Outstanding Letters of Credit		Available Capacity		Expiration
Tesoro Corporation Revolving Credit Facility	$	2,000	$	—	$	4	$	1,996	September 30, 2020
TLLP Revolving Credit Facility	600		—		—		600		January 29, 2021
TLLP Dropdown Credit Facility	1,000		400		—		600		January 29, 2021
Letter of Credit Facilities	1,555		—		44		1,511
Total Credit Facilities	$	5,155	$	400	$	48	$	4,707

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Benefit Plans (Tables)

9 Months Ended

Sep. 30, 2016

Defined Benefit Pension Plans and Defined Benefit Postretirement Plans Disclosure [Abstract]

Schedule of Defined Benefit Plans Disclosures

COMPONENTS OF PENSION AND OTHER POSTRETIREMENT BENEFIT EXPENSE (INCOME) (in millions)

	Pension Benefits
	Three Months Ended September 30,						Nine Months Ended September 30,
	2016			2015			2016			2015
Service cost	$	11		$	11		$	34		$	34
Interest cost	8			7			23			22
Expected return on plan assets	(6		)	(7		)	(20		)	(20		)
Amortization of prior service cost	—			1			—			1
Recognized net actuarial loss	4			6			14			18
Recognized curtailment loss and settlement cost	—			—			5			—
Net Periodic Benefit Expense	$	17		$	18		$	56		$	55
	Other Postretirement Benefits
	Three Months Ended September 30,						Nine Months Ended September 30,
	2016			2015			2016			2015
Service cost	$	—		$	—		$	2		$	2
Interest cost	1			1			2			2
Amortization of prior service credit	(8		)	(8		)	(26		)	(25		)
Recognized net actuarial loss	1			1			3			3
Net Periodic Benefit Income	$	(6	)	$	(6	)	$	(19	)	$	(18	)

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Stockholders' Equity and Earnings Per Share (Tables)

9 Months Ended

Sep. 30, 2016

Stockholders' Equity Attributable to Parent [Abstract]

Stockholders' equity and noncontrolling interest

CHANGES TO EQUITY (in millions)

	Tesoro Corporation Stockholders’ Equity			Noncontrolling  Interest			Total Equity
Balance at December 31, 2015 (a)	$	5,213		$	2,527		$	7,740
Net earnings	656			103			759
Purchases of common stock	(242		)	—			(242		)
Dividend payments	(186		)	—			(186		)
Net effect of amounts related to equity-based compensation (b)	33			3			36
Effect of deconsolidation of RGS (c)	(2		)	(84		)	(86		)
Taxes paid related to net share settlement of equity awards	(25		)	—			(25		)
Net proceeds from issuance of Tesoro Logistics LP common units (d)	(2		)	366			364
Distributions to noncontrolling interest	—			(155		)	(155		)
Pension liability adjustment, net of tax	10			—			10
Transfers to (from) Tesoro paid-in capital related to:
TLLP’s issuance of common units	44			(72		)	(28		)
Other	1			7			8
Balance at September 30, 2016 (a)	$	5,500		$	2,695		$	8,195

(a) We have 5.0 million shares of preferred stock authorized with no par value per share. No shares of preferred stock were outstanding as of September 30, 2016 and December 31, 2015.

(b) We issued less than 0.1 million and approximately 0.3 million shares during the nine months ended September 30, 2016 and 2015, respectively, for proceeds of $2 million and $12 million, respectively, primarily for stock option exercises under our equity-based compensation plans. See Note 11 for more information on stock-based compensation.

(c) As a result of the reassessment performed in conjunction with the adoption of ASU 2015-02, we deconsolidated RGS, causing the derecognition of noncontrolling interest for the reporting of RGS as an equity method investment.

(d) Includes the closing of TLLP’s registered public offering of 6,325,000 common units representing limited partner interests at a public offering price of $47.13 per unit on June 10, 2016 as well as common units issued under TLLP’s continuous offering program during the nine months ended September 30, 2016.

Schedule of earnings per share, basic and diluted

SHARES OUTSTANDING (in millions)

	Three Months Ended September 30,		Nine Months Ended September 30,
	2016	2015	2016	2015
Weighted average common shares outstanding	118.2	122.5	119.1	124.3
Common stock equivalents	1.1	1.3	1.3	1.4
Total Diluted Shares	119.3	123.8	120.4	125.7

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Stock-Based Compensation (Tables)

9 Months Ended

Sep. 30, 2016

Share-based Compensation [Abstract]

Summary of stock-based compensation expense (benefit)

STOCK-BASED COMPENSATION EXPENSE (BENEFIT) (in millions)

	Three Months Ended September 30,				Nine Months Ended September 30,
	2016		2015		2016			2015
Stock appreciation rights (a)	$	1	$	10	$	(14	)	$	20
Performance share awards (b)	3		3		7			9
Market stock units (c)	7		7		21			19
Other stock-based awards (d)	2		2		7			9
Total Stock-Based Compensation Expense	$	13	$	22	$	21		$	57

(a) We had $6 millionand $41 million recorded in other current liabilities associated with our stock appreciation rights (“SARs”) awards at September 30, 2016 and December 31, 2015, respectively. We paid cash of $21 million to settle 0.3 million SARs that were exercised during the nine months ended September 30, 2016 and $37 million to settle 0.5 million SARs that were exercised during the nine months ended September 30, 2015.

(b) We granted 0.1 million market condition performance share awards at a weighted average grant date fair value of $87.90 per share under the amended and restated 2011 Long-Term Incentive Plan (“2011 Plan”) during the nine months ended September 30, 2016.

(c) We granted 0.3 million market stock units at a weighted average grant date fair value of $84.84 per unit under the 2011 Plan during the nine months ended September 30, 2016.

(d) We have aggregated expenses for certain award types as they are not considered significant.

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Operating Segments (Tables)

9 Months Ended

Sep. 30, 2016

Segment Reporting [Abstract]

Schedule of segment reporting information, by segment

SEGMENT INFORMATION RELATED TO CONTINUING OPERATIONS

	Three Months Ended September 30,						Nine Months Ended September 30,
	2016			2015			2016			2015
	(In millions)
Revenues
Refining:
Refined products	$	5,641		$	6,817		$	15,434		$	19,867
Crude oil resales and other	257			172			710			780
TLLP:
Gathering	82			87			255			253
Processing	69			71			208			205
Terminalling and transportation	157			124			438			362
Marketing:
Fuel (a)	4,118			5,144			11,493			14,143
Other non-fuel	23			16			65			48
Intersegment sales	(3,803		)	(4,688		)	(10,673		)	(13,220		)
Total Revenues	$	6,544		$	7,743		$	17,930		$	22,438
Segment Operating Income
Refining (b)	$	52		$	899		$	475		$	1,843
TLLP (b) (c)	133			106			381			312
Marketing	273			379			661			724
Total Segment Operating Income	458			1,384			1,517			2,879
Corporate and unallocated costs (c)	(98		)	(92		)	(260		)	(238		)
Operating Income	360			1,292			1,257			2,641
Interest and financing costs, net	(70		)	(54		)	(190		)	(163		)
Equity in earnings of equity method investments	7			6			12			9
Other income, net	—			13			32			12
Earnings Before Income Taxes	$	297		$	1,257		$	1,111		$	2,499
Depreciation and Amortization Expenses
Refining	$	148		$	133		$	445		$	373
TLLP	45			45			134			133
Marketing	12			11			36			34
Corporate	6			3			18			13
Total Depreciation and Amortization Expenses	$	211		$	192		$	633		$	553
Capital Expenditures
Refining	$	153		$	152		$	409		$	483
TLLP	42			93			125			237
Marketing	3			8			22			20
Corporate	29			6			68			16
Total Capital Expenditures	$	227		$	259		$	624		$	756

(a) Federal and state motor fuel excise taxes on sales by our marketing segment at retail sites where we own the inventory are included in both revenues and cost of sales in our condensed statements of consolidated operations. These taxes totaled $146 million and $137 million for the three months ended September 30, 2016 and 2015, respectively, and $436 million and $423 million for the nine months ended September 30, 2016 and 2015, respectively.

(b) Adjusted for the historical results of the Predecessors.

(c) We present TLLP’s segment operating income net of general and administrative expenses totaling $12 million and $16 million representing TLLP’s corporate costs for the three months ended September 30, 2016 and 2015, respectively, and $37 million and $43 million for the nine months ended September 30, 2016 and 2015, respectively, which are not allocated by TLLP to its operating segments.

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Condensed Consolidating Financial Information (Tables)

9 Months Ended

Sep. 30, 2016

Condensed Financial Information of Parent Company Only Disclosure [Abstract]

Condensed Consolidating Statement of Operations

CONDENSED CONSOLIDATING STATEMENT OF OPERATIONS

FOR THE THREE MONTHS ENDEDSEPTEMBER 30, 2016

(In millions)

	Parent			Guarantor Subsidiaries			Non- Guarantors			Consolidating Adjustments			Consolidated
Revenues	$	—		$	7,136		$	850		$	(1,442	)	$	6,544
Costs and Expenses
Cost of sales (excluding the lower of cost or market inventory valuation adjustment)	—			6,059			533			(1,360		)	5,232
Lower of cost or market inventory valuation adjustment	—			(20		)	—			—			(20		)
Operating, selling, general and administrative expenses	2			696			143			(82		)	759
Depreciation and amortization expenses	—			165			46			—			211
Loss on asset disposals and impairments	—			1			1			—			2
Operating Income (Loss)	(2		)	235			127			—			360
Interest and financing costs, net	(16		)	(20		)	(34		)	—			(70		)
Equity in earnings of subsidiaries	185			43			—			(228		)	—
Equity in earnings of equity method investments	—			4			3			—			7
Other income (expense), net	(1		)	1			—			—			—
Earnings Before Income Taxes	166			263			96			(228		)	297
Income tax expense (benefit) (a)	(4		)	75			24			—			95
Net Earnings from Continuing Operations	170			188			72			(228		)	202
Loss from discontinued operations, net of tax	(1		)	—			—			—			(1		)
Net Earnings	169			188			72			(228		)	201
Less: Net earnings from continuing operations attributable to noncontrolling interest	—			—			32			—			32
Net Earnings Attributable to Tesoro Corporation	$	169		$	188		$	40		$	(228	)	$	169
Comprehensive Income
Total comprehensive income	$	169		$	188		$	72		$	(228	)	$	201
Less: Noncontrolling interest in comprehensive income	—			—			32			—			32
Comprehensive Income Attributable to Tesoro Corporation	$	169		$	188		$	40		$	(228	)	$	169

(a) The income tax expense (benefit) reflected in each column does not include any tax effect of the equity in earnings from corporate subsidiaries, but does include the tax effect of the corporate partners’ share of partnership income.

CONDENSED CONSOLIDATING STATEMENT OF OPERATIONS

FOR THE THREE MONTHS ENDEDSEPTEMBER 30, 2015

(In millions)

	Parent			Guarantor Subsidiaries			Non- Guarantors			Consolidating Adjustments			Consolidated
Revenues	$	—		$	8,574		$	1,054		$	(1,885	)	$	7,743
Costs and Expenses
Cost of sales (excluding the lower of cost or market inventory valuation adjustment)	—			6,491			748			(1,810		)	5,429
Lower of cost or market inventory valuation adjustment	—			83			—			—			83
Operating, selling, general and administrative expenses	2			674			142			(75		)	743
Depreciation and amortization expenses	—			146			46			—			192
Loss on asset disposals and impairments	—			4			—			—			4
Operating Income (Loss)	(2		)	1,176			118			—			1,292
Interest and financing costs, net	(11		)	(17		)	(26		)	—			(54		)
Equity in earnings of subsidiaries	776			32			—			(808		)	—
Equity in earnings of equity method investments	—			4			2			—			6
Other income, net	—			13			—			—			13
Earnings Before Income Taxes	763			1,208			94			(808		)	1,257
Income tax expense (a)	4			445			9			—			458
Net Earnings	759			763			85			(808		)	799
Less: Net earnings from continuing operations attributable to noncontrolling interest	—			—			40			—			40
Net Earnings Attributable to Tesoro Corporation	$	759		$	763		$	45		$	(808	)	$	759
Comprehensive Income
Total comprehensive income	$	759		$	763		$	85		$	(808	)	$	799
Less: Noncontrolling interest in comprehensive income	—			—			40			—			40
Comprehensive Income Attributable to Tesoro Corporation	$	759		$	763		$	45		$	(808	)	$	759

(a) The income tax expense reflected in each column does not include any tax effect of the equity in earnings from corporate subsidiaries, but does include the tax effect of the corporate partners’ share of partnership income.

CONDENSED CONSOLIDATING STATEMENT OF OPERATIONS

FOR THE NINE MONTHS ENDEDSEPTEMBER 30, 2016

(In millions)

	Parent			Guarantor Subsidiaries			Non- Guarantors			Consolidating Adjustments			Consolidated
Revenues	$	—		$	19,664		$	2,401		$	(4,135	)	$	17,930
Costs and Expenses
Cost of sales (excluding the lower of cost or market inventory valuation adjustment)	—			16,479			1,528			(3,893		)	14,114
Lower of cost or market inventory valuation adjustment	—			(237		)	1			—			(236		)
Operating, selling, general and administrative expenses	6			1,986			405			(242		)	2,155
Depreciation and amortization expenses	—			495			138			—			633
Loss on asset disposals and impairments	—			4			3			—			7
Operating Income (Loss)	(6		)	937			326			—			1,257
Interest and financing costs, net	(43		)	(52		)	(95		)	—			(190		)
Equity in earnings of subsidiaries	686			146			—			(832		)	—
Equity in earnings of equity method investments	—			2			10			—			12
Other income, net	1			25			6			—			32
Earnings Before Income Taxes	638			1,058			247			(832		)	1,111
Income tax expense (benefit) (a)	(8		)	330			40			—			362
Net Earnings from Continuing Operations	646			728			207			(832		)	749
Earnings from discontinued operations, net of tax	10			—			—			—			10
Net Earnings	656			728			207			(832		)	759
Less: Net earnings from continuing operations attributable to noncontrolling interest	—			—			103			—			103
Net Earnings Attributable to Tesoro Corporation	$	656		$	728		$	104		$	(832	)	$	656
Comprehensive Income
Total comprehensive income	$	646		$	728		$	207		$	(832	)	$	749
Less: Noncontrolling interest in comprehensive income	—			—			103			—			103
Comprehensive Income Attributable to Tesoro Corporation	$	646		$	728		$	104		$	(832	)	$	646

(a) The income tax expense (benefit) reflected in each column does not include any tax effect of the equity in earnings from corporate subsidiaries, but does include the tax effect of the corporate partners’ share of partnership income.

CONDENSED CONSOLIDATING STATEMENT OF OPERATIONS

FOR THE NINE MONTHS ENDEDSEPTEMBER 30, 2015

(In millions)

	Parent			Guarantor Subsidiaries			Non- Guarantors			Consolidating Adjustments			Consolidated
Revenues	$	—		$	24,573		$	2,718		$	(4,853	)	$	22,438
Costs and Expenses
Cost of sales (excluding the lower of cost or market inventory valuation adjustment)	—			19,862			1,874			(4,646		)	17,090
Lower of cost or market inventory valuation adjustment	—			41			—			—			41
Operating, selling, general and administrative expenses	8			1,889			411			(207		)	2,101
Depreciation and amortization expenses	—			416			137			—			553
Loss on asset disposals and impairments	—			12			—			—			12
Operating Income (Loss)	(8		)	2,353			296			—			2,641
Interest and financing costs, net	(32		)	(52		)	(79		)	—			(163		)
Equity in earnings of subsidiaries	1,527			85			—			(1,612		)	—
Equity in earnings of equity method investments	—			3			6			—			9
Other income, net	1			11			—			—			12
Earnings Before Income Taxes	1,488			2,400			223			(1,612		)	2,499
Income tax expense (benefit) (a)	(2		)	870			20			—			888
Net Earnings from Continuing Operations	1,490			1,530			203			(1,612		)	1,611
Loss from discontinued operations, net of tax	(4		)	—			—			—			(4		)
Net Earnings	1,486			1,530			203			(1,612		)	1,607
Less: Net earnings from continuing operations attributable to noncontrolling interest	—			—			121			—			121
Net Earnings Attributable to Tesoro Corporation	$	1,486		$	1,530		$	82		$	(1,612	)	$	1,486
Comprehensive Income
Total comprehensive income	$	1,486		$	1,530		$	203		$	(1,612	)	$	1,607
Less: Noncontrolling interest in comprehensive income	—			—			121			—			121
Comprehensive Income Attributable to Tesoro Corporation	$	1,486		$	1,530		$	82		$	(1,612	)	$	1,486

(a) The income tax expense (benefit) reflected in each column does not include any tax effect of the equity in earnings from corporate subsidiaries, but does include the tax effect of the corporate partners’ share of partnership income.

Condensed Consolidating Balance Sheet

CONDENSED CONSOLIDATING BALANCE SHEET

AS OF SEPTEMBER 30, 2016

(In millions)

	Parent		Guarantor Subsidiaries		Non- Guarantors		Consolidating Adjustments			Consolidated
ASSETS
Current Assets
Cash and cash equivalents	$	—	$	846	$	541	$	—		$	1,387
Receivables, net of allowance for doubtful accounts	7		844		186		—			1,037
Short-term receivables from affiliates	—		66		17		(83		)	—
Inventories, net	—		2,136		181		—			2,317
Prepayments and other current assets	47		277		40		—			364
Total Current Assets	54		4,169		965		(83		)	5,105
Property, Plant and Equipment, Net	—		6,498		3,271		—			9,769
Investment in Subsidiaries	9,125		619		—		(9,744		)	—
Long-Term Receivables from Affiliates	1,454		—		—		(1,454		)	—
Long-Term Intercompany Note Receivable	—		—		2,026		(2,026		)	—
Acquired Intangibles, Net	—		316		971		—			1,287
Other Noncurrent Assets, Net	46		1,301		502		(5		)	1,844
Total Assets	$	10,679	$	12,903	$	7,735	$	(13,312	)	$	18,005
LIABILITIES AND EQUITY
Current Liabilities
Accounts payable	$	1	$	1,393	$	153	$	—		$	1,547
Short-term payables to affiliates	—		17		66		(83		)	—
Other current liabilities	125		860		161		—			1,146
Total Current Liabilities	126		2,270		380		(83		)	2,693
Long-Term Payables to Affiliates	—		1,223		231		(1,454		)	—
Deferred Income Taxes	1,443		—		—		(5		)	1,438
Debt, Net of Unamortized Issuance Costs	1,189		39		3,439		—			4,667
Other Noncurrent Liabilities	395		568		49		—			1,012
Long-Term Intercompany Note Payable	2,026		—		—		(2,026		)	—
Equity-Tesoro Corporation	5,500		8,803		941		(9,744		)	5,500
Equity-Noncontrolling Interest	—		—		2,695		—			2,695
Total Liabilities and Equity	$	10,679	$	12,903	$	7,735	$	(13,312	)	$	18,005

CONDENSED CONSOLIDATING BALANCE SHEET

AS OF DECEMBER 31, 2015

(In millions)

	Parent		Guarantor Subsidiaries		Non- Guarantors		Consolidating Adjustments			Consolidated
ASSETS
Current Assets
Cash and cash equivalents	$	—	$	895	$	47	$	—		$	942
Receivables, net of allowance for doubtful accounts	—		626		166		—			792
Short-term receivables from affiliates	—		197		—		(197		)	—
Inventories, net	—		1,971		331		—			2,302
Prepayments and other current assets	116		140		16		(1		)	271
Total Current Assets	116		3,829		560		(198		)	4,307
Property, Plant and Equipment, Net	—		6,010		3,531		—			9,541
Investment in Subsidiaries	8,133		509		—		(8,642		)	—
Long-Term Receivables from Affiliates	1,517		—		—		(1,517		)	—
Long-Term Intercompany Note Receivable	—		—		1,626		(1,626		)	—
Acquired Intangibles, Net	—		234		977		—			1,211
Other Noncurrent Assets, Net	33		1,026		219		(5		)	1,273
Total Assets	$	9,799	$	11,608	$	6,913	$	(11,988	)	$	16,332
LIABILITIES AND EQUITY
Current Liabilities
Accounts payable	$	—	$	1,412	$	156	$	—		$	1,568
Short-term payables to affiliates	—		—		197		(197		)	—
Other current liabilities	91		773		99		(1		)	962
Total Current Liabilities	91		2,185		452		(198		)	2,530
Long-Term Payables to Affiliates	—		1,375		142		(1,517		)	—
Deferred Income Taxes	1,227		—		—		(5		)	1,222
Debt, Net of Unamortized Issuance Costs	1,190		33		2,844		—			4,067
Other Noncurrent Liabilities	452		271		50		—			773
Long-Term Intercompany Note Payable	1,626		—		—		(1,626		)	—
Equity-Tesoro Corporation	5,213		7,744		898		(8,642		)	5,213
Equity-Noncontrolling Interest	—		—		2,527		—			2,527
Total Liabilities and Equity	$	9,799	$	11,608	$	6,913	$	(11,988	)	$	16,332

Condensed Consolidating Statement of Cash Flows

CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS

FOR THE NINE MONTHS ENDEDSEPTEMBER 30, 2016

(In millions)

	Parent			Guarantor Subsidiaries			Non- Guarantors			Consolidating Adjustments			Consolidated
Cash Flows From (Used In) Operating Activities
Net cash from (used in) operating activities	$	(20	)	$	687		$	534		$	—		$	1,201
Cash Flows From (Used In) Investing Activities
Capital expenditures	—			(484		)	(139		)	—			(623		)
Acquisition, net of cash	—			(360		)	(52		)	—			(412		)
Proceeds from asset sales	17			1			—			—			18
Intercompany notes, net	349			—			—			(349		)	—
Notes to General Partner	—			—			(400		)	400			—
Investment in subsidiaries	(319		)	(106		)	—			425			—
Other investing activities	—			—			(3		)	—			(3		)
Net cash from (used in) investing activities	47			(949		)	(594		)	476			(1,020		)
Cash Flows From (Used In) Financing Activities
Borrowings under revolving credit agreements	—			—			761			—			761
Repayments on revolving credit agreements	—			—			(666		)	—			(666		)
Proceeds from debt offering	—			—			701			—			701
Repayments of debt	—			(6		)	(252		)	—			(258		)
Dividend payments	(186		)	—			—			—			(186		)
Net proceeds from issuance of Tesoro Logistics LP common units	—			—			364			—			364
Notes from General Partner	400			—			—			(400		)	—
Distributions to noncontrolling interest	—			—			(155		)	—			(155		)
Purchases of common stock	(242		)	—			—			—			(242		)
Taxes paid related to net share settlement of equity awards	(25		)	—			—			—			(25		)
Net intercompany repayments	—			(117		)	(232		)	349			—
Contribution by parent	—			319			106			(425		)	—
Distributions to TLLP unitholders and general partner	38			17			(55		)	—			—
Other financing activities	(12		)	—			(18		)	—			(30		)
Net cash from (used in) financing activities	(27		)	213			554			(476		)	264
Increase (Decrease) in Cash And Cash Equivalents	—			(49		)	494			—			445
Cash and Cash Equivalents, Beginning of Period	—			895			47			—			942
Cash and Cash Equivalents, End of Period	$	—		$	846		$	541		$	—		$	1,387

CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS

FOR THE NINE MONTHS ENDEDSEPTEMBER 30, 2015

(In millions)

	Parent			Guarantor Subsidiaries			Non- Guarantors			Consolidating Adjustments			Consolidated
Cash Flows From (Used In) Operating Activities
Net cash from (used in) operating activities	$	(16	)	$	1,481		$	382		$	—		$	1,847
Cash Flows From (Used In) Investing Activities
Capital expenditures	—			(527		)	(246		)	—			(773		)
Acquisitions	—			—			(6		)	—			(6		)
Intercompany notes, net	1,077			—			—			(1,077		)	—
Other investing activities	—			(4		)	—			—			(4		)
Net cash from (used in) investing activities	1,077			(531		)	(252		)	(1,077		)	(783		)
Cash Flows From (Used In) Financing Activities
Borrowings under revolving credit agreements	—			—			346			—			346
Repayments on revolving credit agreements	—			—			(326		)	—			(326		)
Repayments of debt	(398		)	(4		)	—			—			(402		)
Dividend payments	(169		)	—			—			—			(169		)
Net proceeds from issuance of Tesoro Logistics LP common units	—			—			71			—			71
Distributions to noncontrolling interest	—			—			(135		)	—			(135		)
Purchases of common stock	(494		)	—			—			—			(494		)
Taxes paid related to net share settlement of equity awards	(45		)	—			—			—			(45		)
Net intercompany repayments	—			(998		)	(79		)	1,077			—
Distributions to TLLP unitholders and general partner	33			(2		)	(31		)	—			—
Other financing activities	12			37			—			—			49
Net cash used in financing activities	(1,061		)	(967		)	(154		)	1,077			(1,105		)
Decrease in Cash And Cash Equivalents	—			(17		)	(24		)	—			(41		)
Cash and Cash Equivalents, Beginning of Period	—			943			57			—			1,000
Cash and Cash Equivalents, End of Period	$	—		$	926		$	33		$	—		$	959

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Basis of Presentation Narrative (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Reclassification from AOCI, Current Period, Net of Tax, Attributable to Parent	$ 0		$ (10)
Cost of sales
Prior Period Reclassification Adjustment		$ 59		$ 178
Operating Expense
Prior Period Reclassification Adjustment		(51)		(140)
Selling, General and Administrative Expenses
Prior Period Reclassification Adjustment		$ (8)		$ (38)

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Basis of Presentation TLLP (Details) - shares	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015
Variable Interest Entity
Variable Interest Entity, Qualitative or Quantitative Information, Ownership Percentage			34.00%		36.00%
Limited Partners' Capital Account, Units Outstanding	33,194,109		33,194,109
Percentage of TLLP's revenues from Tesoro	60.00%	54.00%	58.00%	55.00%
General Partner
Variable Interest Entity
Limited Liability Company (LLC) or Limited Partnership (LP), Managing Member or General Partner, Ownership Interest			2.00%		2.00%
General Partners' Capital Account, Units Outstanding	2,083,330		2,083,330

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Basis of Presentation Discontinued Operations (Details) - Hawaii Operations MBbls / d in Thousands, $ in Millions		3 Months Ended		9 Months Ended
	Sep. 25, 2013 MBbls / d	Sep. 30, 2016 USD ($)	Sep. 30, 2015 USD ($)	Sep. 30, 2016 USD ($)	Sep. 30, 2015 USD ($)
Discontinued Operations
Disposal Date	Sep. 25, 2013
Throughput Capacity | MBbls / d	94
Revenues		$ 0	$ 0	$ 0	$ 0
Discontinued Operation, Gain (Loss) from Disposal of Discontinued Operation, before Income Tax		(1)	0	16	(6)
Discontinued Operation, Gain (Loss) on Disposal of Discontinued Operation, Net of Tax		$ (1)	$ 0	10	(4)
Cash From (Used in) Financing Activities, Discontinued Operations				$ (2)	$ (2)

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Basis of Presentation New Accounting Standards and Disclosures (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2016
New Accounting Pronouncement, Early Adoption, Effect
New Accounting Pronouncement, Early Adoption
Proceeds and Excess Tax Benefit from Share-based Compensation	$ 0	$ 16

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Inventories (Details) - USD ($) $ in Millions	Sep. 30, 2016	Dec. 31, 2015
Inventory Disclosure [Abstract]
Domestic crude oil and refined products	$ 2,050	$ 2,142
Foreign subsidiary crude oil	159	325
Materials and supplies	150	140
Oxygenates and by-products	81	54
Less: Lower of cost or market reserve	(123)	(359)
Total Inventories, Net	$ 2,317	$ 2,302

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Inventories Narrative (Details) - USD ($) $ in Millions	Sep. 30, 2016	Dec. 31, 2015
Inventory Disclosure [Abstract]
Lower of cost or market reserve	$ 123	$ 359

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Property, Plant and Equipment (Details) - USD ($) $ in Millions	Sep. 30, 2016	Dec. 31, 2015
Property Plant and Equipment, at cost
Property, Plant and Equipment, at Cost	$ 13,162	$ 12,562
Accumulated depreciation	(3,393)	(3,021)
Property, Plant and Equipment, Net	9,769	9,541
Refining
Property Plant and Equipment, at cost
Property, Plant and Equipment, at Cost	8,210	7,457
TLLP
Property Plant and Equipment, at cost
Property, Plant and Equipment, at Cost	3,642	3,894
Marketing
Property Plant and Equipment, at cost
Property, Plant and Equipment, at Cost	929	915
Corporate
Property Plant and Equipment, at cost
Property, Plant and Equipment, at Cost	$ 381	$ 296

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Property, Plant and Equipment Narrative (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Property, Plant and Equipment [Abstract]
Capitalized interest	$ 8	$ 9	$ 20	$ 27

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Property, Plant and Equipment Great Northern Midstream Acquisition (Details) - Great Northern Midstream Acquisition [Member]	Jan. 08, 2016 bbl MBbls / d
Facility Capacity [Member]
Property, Plant and Equipment
Capacity Ratio | MBbls / d	154
Capacity [Member]
Property, Plant and Equipment
Capacity Ratio | bbl	657,000

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Property, Plant and Equipment Flint Hills Resources Acquisition (Details) - Flint Hills Resources [Member]	Jun. 20, 2016 bbl MBbls / d
Capacity [Member]
Capacity Ratio | bbl	22,500
Facility Capacity [Member]
Capacity Ratio | MBbls / d	580,000

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Property, Plant and Equipment Dakota Prairie Refining Acquisition (Details) MBbls in Thousands	Jun. 28, 2016 MBbls
Capacity [Member] | Dakota Prairie [Member]
Capacity Ratio	20

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Equity Method Investments Equity Method Investments (Details)	Sep. 30, 2016
Watson Cogeneration Company [Member]
Schedule of Equity Method Investments [Abstract]
Equity Method Investment, Ownership Percentage	51.00%
Rendezvous Gas Services, LLC (RGS) [Member]
Schedule of Equity Method Investments [Abstract]
Equity Method Investment, Ownership Percentage	78.00%
Three Rivers Gathering, LLC [Member]
Schedule of Equity Method Investments [Abstract]
Equity Method Investment, Ownership Percentage	50.00%
Uintah Basin Field Services, LLC [Member]
Schedule of Equity Method Investments [Abstract]
Equity Method Investment, Ownership Percentage	38.00%

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Equity Method Investments Schedule of Equity Method Investments (Details) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Schedule of Equity Method Investments [Abstract]
Balance at December 31, 2015				$ 159
Effect of deconsolidation (a)	[1]			295
Effect of consolidation (b)	[2]			(8)
Equity in earnings (loss)		$ 7	$ 6	12	$ 9
Distributions received				(26)
Balance at September 30, 2016		432		432
Rendezvous Gas Services, LLC (RGS) [Member]
Schedule of Equity Method Investments [Abstract]
Effect of deconsolidation (a)				295
Watson Cogeneration Company [Member]
Schedule of Equity Method Investments [Abstract]
Balance at December 31, 2015				92
Effect of deconsolidation (a)				0
Effect of consolidation (b)				0
Equity in earnings (loss)				3
Distributions received				(5)
Balance at September 30, 2016		90		90
Vancouver Energy [Member]
Schedule of Equity Method Investments [Abstract]
Balance at December 31, 2015				9
Effect of deconsolidation (a)				0
Effect of consolidation (b)	[2]			(8)
Equity in earnings (loss)				(1)
Distributions received				0
Balance at September 30, 2016		0		0
TLLP | Rendezvous Gas Services, LLC (RGS) [Member]
Schedule of Equity Method Investments [Abstract]
Balance at December 31, 2015				0
Effect of deconsolidation (a)	[1]			295
Effect of consolidation (b)				0
Equity in earnings (loss)				6
Distributions received				(16)
Balance at September 30, 2016		285		285
TLLP | Three Rivers Gathering, LLC [Member]
Schedule of Equity Method Investments [Abstract]
Balance at December 31, 2015				42
Effect of deconsolidation (a)				0
Effect of consolidation (b)				0
Equity in earnings (loss)				2
Distributions received				(3)
Balance at September 30, 2016		41		41
TLLP | Uintah Basin Field Services, LLC [Member]
Schedule of Equity Method Investments [Abstract]
Balance at December 31, 2015				16
Effect of deconsolidation (a)				0
Effect of consolidation (b)				0
Equity in earnings (loss)				2
Distributions received				(2)
Balance at September 30, 2016		$ 16		$ 16

[1] The reassessment of the investments performed by TLLP resulted in the deconsolidation of RGS and the reporting of RGS as an equity method investment. TLLP recognized an increase of $295 million to equity method investments as of January 1, 2016 as a result of the deconsolidation in addition to a cumulative effect reduction to opening equity of $2 million related to the difference in earnings under the equity method of accounting in prior periods. The carrying amount of our investment in RGS exceeded the underlying equity in net assets by $137 million at September 30, 2016.

[2] Effective September 1, 2016, we became majority owner of our venture with Savage Companies to construct, own and operate a unit train unloading and marine loading terminal at Port of Vancouver, USA (the “Vancouver Energy” terminal). As a result, Vancouver Energy was consolidated.

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Equity Method Investments Equity Method Footnote (Details) $ in Millions	9 Months Ended
	Sep. 30, 2016 USD ($)
Effect of deconsolidation (a)	$ 295	[1]
Rendezvous Gas Services, LLC (RGS) [Member]
Effect of deconsolidation (a)	295
Cumulative Effect on Retained Earnings, Net of Tax	2
Equity Method Investment, Difference Between Carrying Amount and Underlying Equity	$ 137

[1] The reassessment of the investments performed by TLLP resulted in the deconsolidation of RGS and the reporting of RGS as an equity method investment. TLLP recognized an increase of $295 million to equity method investments as of January 1, 2016 as a result of the deconsolidation in addition to a cumulative effect reduction to opening equity of $2 million related to the difference in earnings under the equity method of accounting in prior periods. The carrying amount of our investment in RGS exceeded the underlying equity in net assets by $137 million at September 30, 2016.

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Derivative Assets and Liabilities (Details) - USD ($) $ in Millions		Sep. 30, 2016	Dec. 31, 2015
Derivatives, Fair Value
Gross derivative assets		$ 730	$ 735
Gross derivative liabilities		730	691
Derivative asset amount offset against collateral and netting arrangements	[1],[2]	(696)	(675)
Derivative liability amount offset against collateral and netting arrangements	[1],[2]	(723)	(687)
Net derivative assets		34	60
Net derivative liabilities		7	4
Derivative, Collateral
Cash collateral outstanding		27	12
Commodity Futures Contracts | Prepayments and other current assets
Derivatives, Fair Value
Gross derivative assets		718	711
Gross derivative liabilities		721	673
Commodity Swap Contracts | Prepayments and other current assets
Derivatives, Fair Value
Gross derivative assets		7	15
Gross derivative liabilities		7	14
Commodity Swap Contracts | Other Assets [Member]
Derivatives, Fair Value
Gross derivative assets		2	7
Gross derivative liabilities		0	0
Commodity Forward Contracts | Other Assets [Member]
Derivatives, Fair Value
Gross derivative assets		3	2
Gross derivative liabilities		0	0
Commodity Forward Contracts | Accounts Payable
Derivatives, Fair Value
Gross derivative assets		0	0
Gross derivative liabilities		$ 2	$ 4

[1] Certain of our derivative contracts, under master netting arrangements, include both asset and liability positions. We offset both the fair value amounts and any related cash collateral amounts recognized for multiple derivative instruments executed with the same counterparty when there is a legally enforceable right and an intention to settle net or simultaneously. As of September 30, 2016 and December 31, 2015, we had provided cash collateral amounts of $27 million and $12 million, respectively, related to our unrealized derivative positions. Cash collateral amounts are netted with mark-to-market derivative assets.

[2] Certain of our derivative contracts, under master netting arrangements, include both asset and liability positions. We offset both the fair value amounts and any related cash collateral amounts recognized for multiple derivative instruments executed with the same counterparty when there is a legally enforceable right and an intention to settle net or simultaneously. As of September 30, 2016 and December 31, 2015, we had provided cash collateral amounts of $27 million and $12 million, respectively, related to our unrealized derivative positions. Cash collateral amounts are netted with mark-to-market derivative assets.

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Derivative Gains and Losses (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Derivative Instruments, Gain (Loss)
Total Gain (Loss) on Mark-to-Market Derivatives	$ 19	$ 150	$ (24)	$ 117
Revenues
Derivative Instruments, Gain (Loss)
Total Gain (Loss) on Mark-to-Market Derivatives	10	30	5	28
Cost of sales
Derivative Instruments, Gain (Loss)
Total Gain (Loss) on Mark-to-Market Derivatives	9	123	(30)	94
Other Expense [Member]
Derivative Instruments, Gain (Loss)
Total Gain (Loss) on Mark-to-Market Derivatives	0	(3)	1	(5)
Commodity Contract [Member]
Derivative Instruments, Gain (Loss)
Total Gain (Loss) on Mark-to-Market Derivatives	19	153	(25)	122
Foreign Currency Forward Contracts
Derivative Instruments, Gain (Loss)
Total Gain (Loss) on Mark-to-Market Derivatives	$ 0	$ (3)	$ 1	$ (5)

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Open Long (Short) Positions (Details) bu in Thousands, bbl in Thousands, T in Thousands, CAD in Millions	9 Months Ended
	Sep. 30, 2016 CAD T bbl bu
Derivative
Derivative, notional amount | CAD	CAD 28
Maturity date of foreign currency derivatives	Oct. 24, 2016
Crude oil, refined products and blending products (in barrels) | Futures | Short | 2016
Derivative
Contract volumes	0
Crude oil, refined products and blending products (in barrels) | Futures | Short | 2017
Derivative
Contract volumes	(4,854)
Crude oil, refined products and blending products (in barrels) | Futures | Short | 2018
Derivative
Contract volumes	(75)
Crude oil, refined products and blending products (in barrels) | Futures | Long | 2016
Derivative
Contract volumes	(2,720)
Crude oil, refined products and blending products (in barrels) | Futures | Long | 2017
Derivative
Contract volumes	0
Crude oil, refined products and blending products (in barrels) | Futures | Long | 2018
Derivative
Contract volumes	0
Crude oil, refined products and blending products (in barrels) | Swaps | Long | 2016
Derivative
Contract volumes	(2,225)
Crude oil, refined products and blending products (in barrels) | Swaps | Long | 2017
Derivative
Contract volumes	0
Crude oil, refined products and blending products (in barrels) | Swaps | Long | 2018
Derivative
Contract volumes	0
Crude oil, refined products and blending products (in barrels) | Forwards | Short | 2016
Derivative
Contract volumes	(970)
Crude oil, refined products and blending products (in barrels) | Forwards | Short | 2017
Derivative
Contract volumes	0
Crude oil, refined products and blending products (in barrels) | Forwards | Short | 2018
Derivative
Contract volumes	0
Carbon credits (in tons) | Futures | Long | 2016
Derivative
Contract volumes | T	(4,850)
Carbon credits (in tons) | Futures | Long | 2017
Derivative
Contract volumes | T	(1,000)
Carbon credits (in tons) | Futures | Long | 2018
Derivative
Contract volumes | T	0
Corn (in bushels) | Futures | Short | 2016
Derivative
Contract volumes | bu	(3,245)
Corn (in bushels) | Futures | Short | 2017
Derivative
Contract volumes | bu	0
Corn (in bushels) | Futures | Short | 2018
Derivative
Contract volumes | bu	0

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Fair Value Measurements (Details) - USD ($) $ in Millions		Sep. 30, 2016	Dec. 31, 2015
Fair Value Measurements
Gross derivative assets		$ 730	$ 735
Derivative asset amount offset against collateral and netting arrangements	[1],[2]	(696)	(675)
Net derivative assets		34	60
Gross derivative liabilities		730	691
Derivative liability amount offset against collateral and netting arrangements	[1],[2]	(723)	(687)
Net derivative liabilities		193	44
Cash collateral posted		27	12
Debt carrying value		4,800	4,100
Debt fair value		5,000	4,100
Level 1
Fair Value Measurements
Gross derivative assets		716	711
Gross derivative liabilities		719	673
Level 2
Fair Value Measurements
Gross derivative assets		14	24
Gross derivative liabilities		197	58
Level 3
Fair Value Measurements
Gross derivative assets		0	0
Gross derivative liabilities		0	0
Commodity Futures Contracts
Fair Value Measurements
Derivative asset amount offset against collateral and netting arrangements	[2]	(689)	(660)
Net derivative assets		29	51
Derivative liability amount offset against collateral and netting arrangements	[2]	(716)	(673)
Net derivative liabilities		5	0
Commodity Futures Contracts | Level 1
Fair Value Measurements
Gross derivative assets		716	711
Gross derivative liabilities		719	673
Commodity Futures Contracts | Level 2
Fair Value Measurements
Gross derivative assets		2	0
Gross derivative liabilities		2	0
Commodity Futures Contracts | Level 3
Fair Value Measurements
Gross derivative assets		0	0
Gross derivative liabilities		0	0
Commodity Swap Contracts
Fair Value Measurements
Derivative asset amount offset against collateral and netting arrangements	[2]	(7)	(15)
Net derivative assets		2	7
Derivative liability amount offset against collateral and netting arrangements	[2]	(7)	(14)
Net derivative liabilities		0	0
Commodity Swap Contracts | Level 1
Fair Value Measurements
Gross derivative assets		0	0
Gross derivative liabilities		0	0
Commodity Swap Contracts | Level 2
Fair Value Measurements
Gross derivative assets		9	22
Gross derivative liabilities		7	14
Commodity Swap Contracts | Level 3
Fair Value Measurements
Gross derivative assets		0	0
Gross derivative liabilities		0	0
Commodity Forward Contracts
Fair Value Measurements
Derivative asset amount offset against collateral and netting arrangements	[2]	0	0
Net derivative assets		3	2
Derivative liability amount offset against collateral and netting arrangements	[2]	0	0
Net derivative liabilities		2	4
Commodity Forward Contracts | Level 1
Fair Value Measurements
Gross derivative assets		0	0
Gross derivative liabilities		0	0
Commodity Forward Contracts | Level 2
Fair Value Measurements
Gross derivative assets		3	2
Gross derivative liabilities		2	4
Commodity Forward Contracts | Level 3
Fair Value Measurements
Gross derivative assets		0	0
Gross derivative liabilities		0	0
Environmental Credit Obligations
Fair Value Measurements
Derivative liability amount offset against collateral and netting arrangements	[2]	0	0
Net derivative liabilities		186	40
Environmental Credit Obligations | Level 1
Fair Value Measurements
Gross derivative liabilities		0	0
Environmental Credit Obligations | Level 2
Fair Value Measurements
Gross derivative liabilities		186	40
Environmental Credit Obligations | Level 3
Fair Value Measurements
Gross derivative liabilities		$ 0	$ 0

[1] Certain of our derivative contracts, under master netting arrangements, include both asset and liability positions. We offset both the fair value amounts and any related cash collateral amounts recognized for multiple derivative instruments executed with the same counterparty when there is a legally enforceable right and an intention to settle net or simultaneously. As of September 30, 2016 and December 31, 2015, we had provided cash collateral amounts of $27 million and $12 million, respectively, related to our unrealized derivative positions. Cash collateral amounts are netted with mark-to-market derivative assets.

[2] Certain of our derivative contracts, under master netting arrangements, include both asset and liability positions. We offset both the fair value amounts and any related cash collateral amounts recognized for multiple derivative instruments executed with the same counterparty when there is a legally enforceable right and an intention to settle net or simultaneously. As of September 30, 2016 and December 31, 2015, we had provided cash collateral amounts of $27 million and $12 million, respectively, related to our unrealized derivative positions. Cash collateral amounts are netted with mark-to-market derivative assets.

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Total Debt (Details) - USD ($) $ in Millions		Sep. 30, 2016	Dec. 31, 2015
Debt Instrument
Total debt (a)	[1]	$ 4,764	$ 4,147
Unamortized issuance costs (b)	[2]	(82)	(74)
Current maturities		(15)	(6)
Debt, Net of Current Maturities and Unamortized Issuance Costs		4,667	4,067
TLLP
Debt Instrument
Total debt (a)		3,400	$ 2,900
TLLP senior notes [Member]
Debt Instrument
Unamortized premium		$ 4

[1] Total debt related to TLLP, which is non-recourse to Tesoro, except for TLGP, was $3.4 billion and $2.9 billion at September 30, 2016 and December 31, 2015, respectively.

[2] Includes unamortized premiums of $4 million associated with TLLP’s senior notes at both September 30, 2016 and December 31, 2015.

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Revolving Credit Facilities (Details) $ in Millions	9 Months Ended
	Sep. 30, 2016 USD ($)
Credit facilities
Total Capacity	$ 5,155
Amount Borrowed as of September 30, 2016	400
Outstanding Letters of Credit	48
Available Capacity	$ 4,707
Debt Instrument, Base Rate	3.50%
Eurodollar Rate	0.53%
Tesoro Corporation, letter of credit outstanding fees	0.30%
Tesoro Corporation Revolving Credit Facility
Credit facilities
Total Capacity	$ 2,000
Amount Borrowed as of September 30, 2016	0
Outstanding Letters of Credit	4
Available Capacity	$ 1,996
Expiration	Sep. 30, 2020
Line of Credit Facility, Maximum Borrowing Capacity	$ 2,250
Line of credit facility, remaining borrowing capacity percentage	100.00%
TLLP Revolving Credit Facility
Credit facilities
Total Capacity	$ 600
Amount Borrowed as of September 30, 2016	0
Outstanding Letters of Credit	0
Available Capacity	$ 600
Expiration	Jan. 29, 2021
Line of Credit Facility, Maximum Borrowing Capacity	$ 600
Line of credit facility, collateral	The TLLP Revolving Credit Facility is non-recourse to Tesoro, except for TLGP, and is guaranteed by all of TLLP’s subsidiaries, with the exception of Rendezvous Gas Services L.L.C., and secured by substantially all of TLLP’s assets. Borrowings are available under the TLLP Revolving Credit Facility up to the total loan availability of the facility.
Dropdown Credit Facility [Member]
Credit facilities
Total Capacity	$ 1,000
Amount Borrowed as of September 30, 2016	400
Outstanding Letters of Credit	0
Available Capacity	$ 600
Expiration	Jan. 29, 2021
Line of Credit Facility, Maximum Borrowing Capacity	$ 1,000
Line of credit facility, remaining borrowing capacity percentage	60.00%
Weighted average interest rate	2.54%
Letter of Credit Facilities
Credit facilities
Total Capacity	$ 1,555
Amount Borrowed as of September 30, 2016	0
Outstanding Letters of Credit	44
Available Capacity	$ 1,511
Minimum | Letter of Credit Facilities
Credit facilities
Tesoro Corporation, letter of credit outstanding fees	0.40%
Maximum | Letter of Credit Facilities
Credit facilities
Tesoro Corporation, letter of credit outstanding fees	0.90%
TLLP
Credit facilities
Total Capacity	$ 1,600
Line of Credit Facility, Maximum Borrowing Capacity	$ 2,100
Base Rate [Member]
Credit facilities
Debt Instrument, Basis Spread on Variable Rate	0.75%
Eurodollar [Member]
Credit facilities
Debt Instrument, Basis Spread on Variable Rate	1.75%
External Credit Rating, Investment Grade [Member] | Tesoro Corporation Revolving Credit Facility
Credit facilities
Line of Credit Facility, Maximum Borrowing Capacity	$ 3,000

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Debt TLLP Senior Notes Issuance (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2016	May 09, 2016
TLLP | 6.375% Senior Notes Due 2024 [Member]
Debt Instrument
Long-term Debt, Gross		$ 450
Debt Instrument Redemption With Equity Proceeds	35.00%
Debt Instrument, Redemption Price, Percentage	106.375%
TLLP | 6.375% Senior Notes Due 2024 [Member] | Debt Instrument, Redemption, Period One [Member]
Debt Instrument
Debt Instrument Redemption Premium Percentage	4.781%
TLLP | 6.375% Senior Notes Due 2024 [Member] | Debt Instrument, Redemption, Period Two [Member]
Debt Instrument
Debt Instrument Redemption Premium Percentage	3.188%
TLLP | 6.375% Senior Notes Due 2024 [Member] | Debt Instrument, Redemption, Period Three [Member]
Debt Instrument
Debt Instrument Redemption Premium Percentage	1.594%
TLLP | 6.125% Senior Notes Due 2021 [Member]
Debt Instrument
Long-term Debt, Gross		$ 250
TLLP | 6.125% Senior Notes Due 2021 [Member] | Debt Instrument, Redemption, Period One [Member]
Debt Instrument
Debt Instrument Redemption Premium Percentage	4.594%
TLLP | 6.125% Senior Notes Due 2021 [Member] | Debt Instrument, Redemption, Period Two [Member]
Debt Instrument
Debt Instrument Redemption Premium Percentage	3.063%
TLLP | 6.125% Senior Notes Due 2021 [Member] | Debt Instrument, Redemption, Period Three [Member]
Debt Instrument
Debt Instrument Redemption Premium Percentage	1.531%
6.125% Senior Notes Due 2021 [Member]
Debt Instrument
Senior Notes	$ 550

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Benefit Plans (Details) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2016 USD ($) pension_plans plans	Sep. 30, 2015 USD ($)	Sep. 30, 2016 USD ($) pension_plans plans	Sep. 30, 2015 USD ($)
Pension Benefits
General Discussion of Pension Plan
Number of defined benefit plans sponsored (plans) | plans	4		4
Pension Contributions
Defined Benefit Plan, Contributions by Employer			$ 60
Components of Net Periodic Benefit Expense and Other Postretirement Expense (Income):
Service cost	$ 11	$ 11	34	$ 34
Interest cost	8	7	23	22
Expected return on plan assets	(6)	(7)	(20)	(20)
Amortization of prior service cost	0	1	0	1
Recognized net actuarial loss	4	6	14	18
Recognized curtailment loss and settlement cost	0	0	5	0
Net Periodic Benefit Expense (Income)	17	18	56	55
Other Postretirement Benefits
Components of Net Periodic Benefit Expense and Other Postretirement Expense (Income):
Service cost	0	0	2	2
Interest cost	1	1	2	2
Amortization of prior service cost	(8)	(8)	(26)	(25)
Recognized net actuarial loss	1	1	3	3
Net Periodic Benefit Expense (Income)	$ (6)	$ (6)	$ (19)	$ (18)
Funded Qualified Employee Retirement Plan
General Discussion of Pension Plan
Number of defined benefit plans sponsored (plans) | pension_plans	1		1
Unfunded Nonqualified Executive Plan
General Discussion of Pension Plan
Number of defined benefit plans sponsored (plans) | pension_plans	3		3

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Commitments and Contingencies, Environmental Liabilities (Details) - USD ($) $ in Millions		9 Months Ended
	Jul. 10, 2015	Sep. 30, 2016	Dec. 31, 2015
Environmental Liabilities
Accrual for Environmental Loss Contingencies		$ 212	$ 255
Commitments and Contingencies, Policy [Policy Text Block]		Our environmental accruals are based on estimates including engineering assessments, and it is possible that our projections will change and that additional costs will be recorded as more information becomes available. Large, and sometimes unspecified, damages or penalties may be sought from us in some matters. We have not established accruals for these types of matters unless a loss is probable, and the amount of loss is currently estimable.
Martinez refinery
Environmental Liabilities
Accrual for Environmental Loss Contingencies		$ 167	192
Remediation activities measurement period		We cannot reasonably determine the full extent of remedial activities that may be required at the Martinez refinery and for assets acquired in the Los Angeles Acquisition, and it is possible that we will identify additional investigation and remediation costs for site cleanup activities as more information becomes available.
Loss Contingency, Date of Dismissal	Jul. 10, 2015
Insurance Coverage Ceiling		$ 190
Self Insurance Deductible		50
TLLP
Environmental Liabilities
Accrual for Environmental Loss Contingencies		$ 18	$ 33

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Commitments and Contingencies Commitments and Contingencies, Other Contingencies (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Sep. 30, 2016
Commitments and Contingencies Disclosure [Abstract]
Disposal Group, Including Discontinued Operation, Operating Expense	$ 46
Environmental Costs Recognized, Capitalized	$ 211	$ 55

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Stockholders' Equity, Changes to Equity (Details) - USD ($) $ / shares in Units, $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Total Equity
Balance at December 31, 2015 (a)	[1]			$ 7,740
Net earnings		$ 201	$ 799	759	$ 1,607
Purchases of common stock				(242)	$ (494)
Dividend payments				(186)
Net effect of amounts related to equity-based compensation (b)	[2]			36
Effect of deconsolidation of RGS (c)	[3]			(86)
Taxes paid related to net share settlement of equity awards				(25)
Net proceeds from issuance of Tesoro Logistics LP common units (d)	[4]			364
Distributions to noncontrolling interest				(155)
Transfers to (from) Tesoro paid-in capital related to:				10
TLLP’s issuance of common units				28
Other				8
Balance at September 30, 2016 (a)	[1]	$ 8,195		$ 8,195
Preferred Stock, Shares Authorized		5,000,000		5,000,000
Preferred Stock, Par or Stated Value Per Share		$ 0		$ 0
Preferred Stock, Shares Issued		0		0
Shares issued for equity-based compensation plans (shares)				100,000	300,000
Stock issued during period, value, primarily stock Options exercised				$ 2	$ 12
Tesoro Corporation Stockholders’ Equity
Total Equity
Balance at December 31, 2015 (a)	[1]			5,213
Net earnings				656
Purchases of common stock				(242)
Dividend payments				(186)
Net effect of amounts related to equity-based compensation (b)	[2]			33
Effect of deconsolidation of RGS (c)	[3]			(2)
Taxes paid related to net share settlement of equity awards				(25)
Net proceeds from issuance of Tesoro Logistics LP common units (d)	[4]			(2)
Distributions to noncontrolling interest				0
Transfers to (from) Tesoro paid-in capital related to:				10
TLLP’s issuance of common units				44
Other				1
Balance at September 30, 2016 (a)	[1]	$ 5,500		5,500
Noncontrolling Interest
Total Equity
Balance at December 31, 2015 (a)	[1]			2,527
Net earnings				103
Purchases of common stock				0
Dividend payments				0
Net effect of amounts related to equity-based compensation (b)	[2]			3
Effect of deconsolidation of RGS (c)	[3]			(84)
Taxes paid related to net share settlement of equity awards				0
Net proceeds from issuance of Tesoro Logistics LP common units (d)	[4]			366
Distributions to noncontrolling interest				(155)
Transfers to (from) Tesoro paid-in capital related to:				0
TLLP’s issuance of common units				72
Other				(7)
Balance at September 30, 2016 (a)	[1]	$ 2,695		$ 2,695
TLLP
Total Equity
Partners' Capital Account, Units, Sale of Units			6,325,000
Shares Issued, Price Per Share		$ 47.13		$ 47.13

[1] We have 5.0 million shares of preferred stock authorized with no par value per share. No shares of preferred stock were outstanding as of September 30, 2016 and December 31, 2015.

[2] We issued less than 0.1 million and approximately 0.3 million shares during the nine months ended September 30, 2016 and 2015, respectively, for proceeds of $2 million and $12 million, respectively, primarily for stock option exercises under our equity-based compensation plans. See Note 11 for more information on stock-based compensation.

[3] As a result of the reassessment performed in conjunction with the adoption of ASU 2015-02, we deconsolidated RGS, causing the derecognition of noncontrolling interest for the reporting of RGS as an equity method investment.

[4] Includes the closing of TLLP’s registered public offering of 6,325,000 common units representing limited partner interests at a public offering price of $47.13 per unit on June 10, 2016 as well as common units issued under TLLP’s continuous offering program during the nine months ended September 30, 2016.

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Stockholders' Equity and Earnings Per Share Earnings per share (Details) - shares shares in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Earnings Per Share [Abstract]
Weighted average common shares outstanding	118.2	122.5	119.1	124.3
Common stock equivalents	1.1	1.3	1.3	1.4
Total Diluted Shares	119.3	123.8	120.4	125.7
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	0.4	0.1	0.3	0.6

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Stockholders' Equity and Earnings Per Share Stockholders' Equity, Share Repurchases and Dividends (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions				3 Months Ended		6 Months Ended		9 Months Ended
	Dec. 15, 2016	Nov. 30, 2016	Oct. 31, 2016	Sep. 30, 2016	Sep. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Number of shares purchased (shares)								3.2	5.5
Share repurchases, value								$ 250	$ 494
Dividend payments				$ 65	$ 62			$ 186	$ 169
Dividends declared (dollars per share)				$ 0.55	$ 0.50	$ 0.50	$ 0.425	$ 1.55	$ 1.35
Subsequent Event
Dividends declared (dollars per share)			$ 0.55
Dividends payable, date declared			Oct. 31, 2016
Dividends, date to be paid	Dec. 15, 2016
Dividends, date of record		Nov. 30, 2016

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Stock-Based Compensation Stock-Based Compensation Table (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Allocated Share-based Compensation Expense		$ 13	$ 22	$ 21	$ 57
Employee Service Share-based Compensation, Tax Benefit from Compensation Expense		5	8	23	22
Stock Appreciation Rights (SARs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Allocated Share-based Compensation Expense	[1]	1	10	(14)	20
Other Deferred Compensation Arrangements, Liability, Current and Noncurrent		6		6		$ 41
Employee Service Share-based Compensation, Cash Flow Effect, Cash Used to Settle Awards				$ 21	$ 37
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Exercised				0.3	0.5
Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Allocated Share-based Compensation Expense	[2]	3	3	$ 7	$ 9
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period				0.1
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value				$ 87.90
Market Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Allocated Share-based Compensation Expense	[3]	7	7	$ 21	19
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period				0.3
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value				$ 84.84
Other stock-based awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Allocated Share-based Compensation Expense	[4]	$ 2	$ 2	$ 7	$ 9

[1] We had $6 million and $41 million recorded in other current liabilities associated with our stock appreciation rights (“SARs”) awards at September 30, 2016 and December 31, 2015, respectively. We paid cash of $21 million to settle 0.3 million SARs that were exercised during the nine months ended September 30, 2016 and $37 million to settle 0.5 million SARs that were exercised during the nine months ended September 30, 2015.

[2] We granted 0.1 million market condition performance share awards at a weighted average grant date fair value of $87.90 per share under the amended and restated 2011 Long-Term Incentive Plan (“2011 Plan”) during the nine months ended September 30, 2016.

[3] We granted 0.3 million market stock units at a weighted average grant date fair value of $84.84 per unit under the 2011 Plan during the nine months ended September 30, 2016.

[4] We have aggregated expenses for certain award types as they are not considered significant.

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Stock-Based Compensation Stock-Based Compensation Narrative (Details) - New Accounting Pronouncement, Early Adoption, Effect - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Proceeds and Excess Tax Benefit from Share-based Compensation	$ 0		$ 16
Employee Service Share-based Compensation, Tax Benefit Realized from Exercise of Stock Options	$ 1	$ 8	$ 37	$ 71

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Operating Segments (Details)	9 Months Ended
	Sep. 30, 2016 states refineries
Segment Reporting Information
Foreign operations	Since we do not have significant operations in foreign countries, revenue generated and long-lived assets located in foreign countries are not material to our operations.
Change in basis of segmentation, description	As of the second quarter 2015, we revised our operating segments to include refining, TLLP and a realigned marketing segment. Comparable prior period information has been recast to reflect our revised segment presentation. No other changes were deemed necessary to our refining and TLLP segments.
Refining
Segment Reporting Information
Number of refineries (refineries) | refineries	7
Segment reporting description	Our refining segment owns and operates seven petroleum refineries located in California, Washington, Alaska, North Dakota and Utah that manufacture gasoline and gasoline blendstocks, jet fuel, diesel fuel, residual fuel oil and other refined products. We sell these refined products, together with refined products purchased from third parties, to our marketing segment through terminal facilities and other locations and opportunistically export refined products to foreign markets.
TLLP
Segment Reporting Information
Segment reporting description	TLLP’s assets and operations include certain crude oil gathering assets, natural gas gathering and processing assets and crude oil and refined products terminalling and transportation assets acquired from Tesoro and other third parties. Revenues from the TLLP segment are generated by charging fees for gathering crude oil and natural gas, for processing natural gas, and for terminalling, transporting and storing crude oil, and refined products.
Marketing
Segment Reporting Information
Number of states with retail sites (states) | states	16
Segment reporting description	Tesoro’s marketing business supplies gasoline and diesel across 16 states through both branded and unbranded marketing channels. We utilize various operating models in the operation of our retail stations.

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Operating Segments, Results (Details) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Segment Reporting Information
Total Revenues		$ (6,544)	$ (7,743)	$ (17,930)	$ (22,438)
Operating Income		$ 360	$ 1,292	$ 1,257	$ 2,641
Reconciliation of Operating Income from Segments to Consolidated
Corporate and unallocated costs (c)	[1]	-98	-92	-260	-238
Segment Reporting Information, Income before Income Taxes
Interest and financing costs, net		$ (70)	$ (54)	$ (190)	$ (163)
Equity in earnings of equity method investments		7	6	12	9
Other income, net		0	13	32	12
Earnings Before Income Taxes		297	1,257	1,111	2,499
Segment Reporting, Disclosure of Other Information about Entity's Reportable Segments
Total Depreciation and Amortization		211	192	633	553
Total Capital Expenditures		227	259	624	756
Segment Reporting Table Footnotes
Federal and state motor fuel taxes on sales by the marketing segment		146	137	436	423
Refining
Segment Reporting Information
Operating Income	[2]	52	899	475	1,843
Segment Reporting, Disclosure of Other Information about Entity's Reportable Segments
Total Depreciation and Amortization		148	133	445	373
Total Capital Expenditures		153	152	409	483
Refining | Refined products
Segment Reporting Information
Revenues		5,641	6,817	15,434	19,867
Refining | Crude oil resales and other
Segment Reporting Information
Revenues		257	172	710	780
TLLP
Segment Reporting Information
Operating Income	[1],[2]	$ 133	$ 106	$ 381	$ 312
Reconciliation of Operating Income from Segments to Consolidated
Corporate and unallocated costs (c)		12	16	37	43
Segment Reporting, Disclosure of Other Information about Entity's Reportable Segments
Total Depreciation and Amortization		$ 45	$ 45	$ 134	$ 133
Total Capital Expenditures		42	93	125	237
TLLP | Gathering
Segment Reporting Information
Revenues		82	87	255	253
TLLP | Processing
Segment Reporting Information
Revenues		69	71	208	205
TLLP | Terminalling and transportation
Segment Reporting Information
Revenues		157	124	438	362
Marketing
Segment Reporting Information
Operating Income		273	379	661	724
Segment Reporting, Disclosure of Other Information about Entity's Reportable Segments
Total Depreciation and Amortization		12	11	36	34
Total Capital Expenditures		3	8	22	20
Marketing | Fuel
Segment Reporting Information
Revenues	[3]	4,118	5,144	11,493	14,143
Marketing | Other Non-fuel
Segment Reporting Information
Revenues		23	16	65	48
Consolidating Adjustments
Segment Reporting Information
Revenues		(3,803)	(4,688)	(10,673)	(13,220)
Corporate
Segment Reporting, Disclosure of Other Information about Entity's Reportable Segments
Total Depreciation and Amortization		6	3	18	13
Total Capital Expenditures		29	6	68	16
Operating Segments [Member]
Segment Reporting Information
Operating Income		$ 458	$ 1,384	$ 1,517	$ 2,879

[1] We present TLLP’s segment operating income net of general and administrative expenses totaling $12 million and $16 million representing TLLP’s corporate costs for the three months ended September 30, 2016 and 2015, respectively, and $37 million and $43 million for the nine months ended September 30, 2016 and 2015, respectively, which are not allocated by TLLP to its operating segments.

[2] Adjusted for the historical results of the Predecessors.

[3] Federal and state motor fuel excise taxes on sales by our marketing segment at retail sites where we own the inventory are included in both revenues and cost of sales in our condensed statements of consolidated operations. These taxes totaled $146 million and $137 million for the three months ended September 30, 2016 and 2015, respectively, and $436 million and $423 million for the nine months ended September 30, 2016 and 2015, respectively.

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Condensed Consolidating Financial Information, Narrative (Details)	9 Months Ended	12 Months Ended
	Sep. 30, 2016	Dec. 31, 2015
Guarantor Information
Variable Interest Entity, Qualitative or Quantitative Information, Ownership Percentage	34.00%	36.00%
Percentage ownership of subsidiary guarantors	100.00%
4.250% Senior Notes due 2017
Guarantor Information
Debt instrument interest rate	4.25%
Debt instrument, maturity date	Oct. 01, 2017
5.375% Senior Notes due 2022
Guarantor Information
Debt instrument interest rate	5.375%
Debt instrument, maturity date	Oct. 01, 2022
5.125% Senior Notes due 2024
Guarantor Information
Debt instrument interest rate	5.125%
Debt instrument, maturity date	Apr. 01, 2024

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Condensed Consolidating Financial Information Condensed Consolidating Financial Information, Statements of Operations (Details) - USD ($) $ in Millions	3 Months Ended				9 Months Ended
	Sep. 30, 2016		Sep. 30, 2015		Sep. 30, 2016		Sep. 30, 2015
Condensed Financial Statements, Captions [Line Items]
Revenues (a)	$ 6,544		$ 7,743		$ 17,930		$ 22,438
Costs and Expenses [Abstract]
Cost of sales (excluding the lower of cost or market inventory valuation adjustment)	5,232		5,429		14,114		17,090
Lower of cost or market inventory valuation adjustment, net	(20)		83		(236)		41
Operating, selling, general and administrative expenses	759		743		2,155		2,101
Depreciation and Amortization Expenses	211		192		633		553
Loss on asset disposals and impairments	2		4		7		12
Operating Income (loss)	(360)		(1,292)		(1,257)		(2,641)
Interest and financing costs, net	70		54		190		163
Equity in earnings of subsidiaries	0		0		0		0
Equity in earnings of equity method investments	7		6		12		9
Other income (expense), net	0		13		32		12
Earnings Before Income Taxes	297		1,257		1,111		2,499
Income tax expense (benefit) (a)	95		458		362		888
Net Earnings from Continuing Operations	202		799		749		1,611
Earnings (loss) from discontinued operations, net of tax	(1)		0		10		(4)
Net earnings	201		799		759		1,607
Less: Net earnings from continuing operations attributable to noncontrolling interest	32		40		103		121
Net Earnings Attributable to Tesoro Corporation	169		759		656		1,486
Comprehensive Income
Total comprehensive income	201		799		749		1,607
Less: Noncontrolling interest in comprehensive income	32		40		103		121
Comprehensive Income Attributable to Tesoro Corporation	169		759		646		1,486
Consolidating Adjustments
Condensed Financial Statements, Captions [Line Items]
Revenues (a)	(1,442)		(1,885)		(4,135)		(4,853)
Costs and Expenses [Abstract]
Cost of sales (excluding the lower of cost or market inventory valuation adjustment)	(1,360)		(1,810)		(3,893)		(4,646)
Lower of cost or market inventory valuation adjustment, net	0		0		0		0
Operating, selling, general and administrative expenses	(82)		(75)		(242)		(207)
Depreciation and Amortization Expenses	0		0		0		0
Loss on asset disposals and impairments	0		0		0		0
Operating Income (loss)	0		0		0		0
Interest and financing costs, net	0		0		0		0
Equity in earnings of subsidiaries	(228)		(808)		(832)		(1,612)
Equity in earnings of equity method investments	0		0		0		0
Other income (expense), net	0		0		0		0
Earnings Before Income Taxes	(228)		(808)		(832)		(1,612)
Income tax expense (benefit) (a)	0	[1]	0	[2]	0	[1]	0	[1]
Net Earnings from Continuing Operations	(228)				(832)		(1,612)
Earnings (loss) from discontinued operations, net of tax	0				0		0
Net earnings	(228)		(808)		(832)		(1,612)
Less: Net earnings from continuing operations attributable to noncontrolling interest	0		0		0		0
Net Earnings Attributable to Tesoro Corporation	(228)		(808)		(832)		(1,612)
Comprehensive Income
Total comprehensive income	(228)		(808)		(832)		(1,612)
Less: Noncontrolling interest in comprehensive income	0		0		0		0
Comprehensive Income Attributable to Tesoro Corporation	(228)		(808)		(832)		(1,612)
Parent Company [Member]
Condensed Financial Statements, Captions [Line Items]
Revenues (a)	0		0		0		0
Costs and Expenses [Abstract]
Cost of sales (excluding the lower of cost or market inventory valuation adjustment)	0		0		0		0
Lower of cost or market inventory valuation adjustment, net	0		0		0		0
Operating, selling, general and administrative expenses	2		2		6		8
Depreciation and Amortization Expenses	0		0		0		0
Loss on asset disposals and impairments	0		0		0		0
Operating Income (loss)	2		2		6		8
Interest and financing costs, net	16		11		43		32
Equity in earnings of subsidiaries	185		776		686		1,527
Equity in earnings of equity method investments	0		0		0		0
Other income (expense), net	(1)		0		1		1
Earnings Before Income Taxes	166		763		638		1,488
Income tax expense (benefit) (a)	(4)	[1]	4	[2]	(8)	[1]	(2)	[1]
Net Earnings from Continuing Operations	170				646		1,490
Earnings (loss) from discontinued operations, net of tax	(1)				10		(4)
Net earnings	169		759		656		1,486
Less: Net earnings from continuing operations attributable to noncontrolling interest	0		0		0		0
Net Earnings Attributable to Tesoro Corporation	169		759		656		1,486
Comprehensive Income
Total comprehensive income	169		759		646		1,486
Less: Noncontrolling interest in comprehensive income	0		0		0		0
Comprehensive Income Attributable to Tesoro Corporation	169		759		646		1,486
Guarantor Subsidiaries [Member]
Condensed Financial Statements, Captions [Line Items]
Revenues (a)	7,136		8,574		19,664		24,573
Costs and Expenses [Abstract]
Cost of sales (excluding the lower of cost or market inventory valuation adjustment)	6,059		6,491		16,479		19,862
Lower of cost or market inventory valuation adjustment, net	(20)		83		(237)		41
Operating, selling, general and administrative expenses	696		674		1,986		1,889
Depreciation and Amortization Expenses	165		146		495		416
Loss on asset disposals and impairments	1		4		4		12
Operating Income (loss)	(235)		(1,176)		(937)		(2,353)
Interest and financing costs, net	20		17		52		52
Equity in earnings of subsidiaries	43		32		146		85
Equity in earnings of equity method investments	4		4		2		3
Other income (expense), net	1		13		25		11
Earnings Before Income Taxes	263		1,208		1,058		2,400
Income tax expense (benefit) (a)	75	[1]	445	[2]	330	[1]	870	[1]
Net Earnings from Continuing Operations	188				728		1,530
Earnings (loss) from discontinued operations, net of tax	0				0		0
Net earnings	188		763		728		1,530
Less: Net earnings from continuing operations attributable to noncontrolling interest	0		0		0		0
Net Earnings Attributable to Tesoro Corporation	188		763		728		1,530
Comprehensive Income
Total comprehensive income	188		763		728		1,530
Less: Noncontrolling interest in comprehensive income	0		0		0		0
Comprehensive Income Attributable to Tesoro Corporation	188		763		728		1,530
Non-Guarantor Subsidiaries [Member]
Condensed Financial Statements, Captions [Line Items]
Revenues (a)	850		1,054		2,401		2,718
Costs and Expenses [Abstract]
Cost of sales (excluding the lower of cost or market inventory valuation adjustment)	533		748		1,528		1,874
Lower of cost or market inventory valuation adjustment, net	0		0		1		0
Operating, selling, general and administrative expenses	143		142		405		411
Depreciation and Amortization Expenses	46		46		138		137
Loss on asset disposals and impairments	1		0		3		0
Operating Income (loss)	(127)		(118)		(326)		(296)
Interest and financing costs, net	34		26		95		79
Equity in earnings of subsidiaries	0		0		0		0
Equity in earnings of equity method investments	3		2		10		6
Other income (expense), net	0		0		6		0
Earnings Before Income Taxes	96		94		247		223
Income tax expense (benefit) (a)	24	[1]	9	[2]	40	[1]	20	[1]
Net Earnings from Continuing Operations	72				207		203
Earnings (loss) from discontinued operations, net of tax	0				0		0
Net earnings	72		85		207		203
Less: Net earnings from continuing operations attributable to noncontrolling interest	32		40		103		121
Net Earnings Attributable to Tesoro Corporation	40		45		104		82
Comprehensive Income
Total comprehensive income	72		85		207		203
Less: Noncontrolling interest in comprehensive income	32		40		103		121
Comprehensive Income Attributable to Tesoro Corporation	$ 40		$ 45		$ 104		$ 82

[1] The income tax expense (benefit) reflected in each column does not include any tax effect of the equity in earnings from corporate subsidiaries, but does include the tax effect of the corporate partners’ share of partnership income.

[2] The income tax expense reflected in each column does not include any tax effect of the equity in earnings from corporate subsidiaries, but does include the tax effect of the corporate partners’ share of partnership income.

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Condensed Consolidating Financial Information Condensed Consolidating Financial Information, Balance Sheet (Details) - USD ($) $ in Millions	Sep. 30, 2016	Dec. 31, 2015	Sep. 30, 2015	Dec. 31, 2014
Current Assets
Cash and cash equivalents	$ 1,387	$ 942	$ 959	$ 1,000
Receivables, net of allowance for doubtful accounts	1,037	792
Short-term receivables from affiliates	0	0
Inventories, net	2,317	2,302
Prepayments and other current assets	364	271
Total Current Assets	5,105	4,307
Property, Plant and Equipment, Net	9,769	9,541
Investment in Subsidiaries	0	0
Long-Term Receivables from Affiliates	0	0
Long-Term Intercompany Note Receivable	0	0
Other Noncurrent Assets
Acquired Intangibles, Net	1,287	1,211
Other Noncurrent Assets, Net	1,844	1,273
Total Assets	18,005	16,332
Current Liabilities
Accounts payable	1,547	1,568
Short-term payables to affiliates	0	0
Other current liabilities	1,146	962
Total Current Liabilities	2,693	2,530
Long-Term Payables to Affiliates	0	0
Deferred Income Taxes	1,438	1,222
Debt, Net of Unamortized Issuance Costs	4,667	4,067
Other Noncurrent Liabilities	1,012	773
Long-Term Intercompany Note Payable	0	0
Equity-Tesoro Corporation	5,500	5,213
Equity-Noncontrolling Interest	2,695	2,527
Total Liabilities and Equity	18,005	16,332
Consolidating Adjustments
Current Assets
Cash and cash equivalents	0	0	0	0
Receivables, net of allowance for doubtful accounts	0	0
Short-term receivables from affiliates	(83)	(197)
Inventories, net	0	0
Prepayments and other current assets	0	(1)
Total Current Assets	(83)	(198)
Property, Plant and Equipment, Net	0	0
Investment in Subsidiaries	(9,744)	(8,642)
Long-Term Receivables from Affiliates	(1,454)	(1,517)
Long-Term Intercompany Note Receivable	(2,026)	(1,626)
Other Noncurrent Assets
Acquired Intangibles, Net	0	0
Other Noncurrent Assets, Net	(5)	(5)
Total Assets	(13,312)	(11,988)
Current Liabilities
Accounts payable	0	0
Short-term payables to affiliates	(83)	(197)
Other current liabilities	0	(1)
Total Current Liabilities	(83)	(198)
Long-Term Payables to Affiliates	(1,454)	(1,517)
Deferred Income Taxes	(5)	(5)
Debt, Net of Unamortized Issuance Costs	0	0
Other Noncurrent Liabilities	0	0
Long-Term Intercompany Note Payable	(2,026)	(1,626)
Equity-Tesoro Corporation	(9,744)	(8,642)
Equity-Noncontrolling Interest	0	0
Total Liabilities and Equity	(13,312)	(11,988)
Guarantor Subsidiaries [Member]
Current Assets
Cash and cash equivalents	846	895	926	943
Receivables, net of allowance for doubtful accounts	844	626
Short-term receivables from affiliates	66	197
Inventories, net	2,136	1,971
Prepayments and other current assets	277	140
Total Current Assets	4,169	3,829
Property, Plant and Equipment, Net	6,498	6,010
Investment in Subsidiaries	619	509
Long-Term Receivables from Affiliates	0	0
Long-Term Intercompany Note Receivable	0	0
Other Noncurrent Assets
Acquired Intangibles, Net	316	234
Other Noncurrent Assets, Net	1,301	1,026
Total Assets	12,903	11,608
Current Liabilities
Accounts payable	1,393	1,412
Short-term payables to affiliates	17	0
Other current liabilities	860	773
Total Current Liabilities	2,270	2,185
Long-Term Payables to Affiliates	1,223	1,375
Deferred Income Taxes	0	0
Debt, Net of Unamortized Issuance Costs	39	33
Other Noncurrent Liabilities	568	271
Long-Term Intercompany Note Payable	0	0
Equity-Tesoro Corporation	8,803	7,744
Equity-Noncontrolling Interest	0	0
Total Liabilities and Equity	12,903	11,608
Non-Guarantor Subsidiaries [Member]
Current Assets
Cash and cash equivalents	541	47	33	57
Receivables, net of allowance for doubtful accounts	186	166
Short-term receivables from affiliates	17	0
Inventories, net	181	331
Prepayments and other current assets	40	16
Total Current Assets	965	560
Property, Plant and Equipment, Net	3,271	3,531
Investment in Subsidiaries	0	0
Long-Term Receivables from Affiliates	0	0
Long-Term Intercompany Note Receivable	2,026	1,626
Other Noncurrent Assets
Acquired Intangibles, Net	971	977
Other Noncurrent Assets, Net	502	219
Total Assets	7,735	6,913
Current Liabilities
Accounts payable	153	156
Short-term payables to affiliates	66	197
Other current liabilities	161	99
Total Current Liabilities	380	452
Long-Term Payables to Affiliates	231	142
Deferred Income Taxes	0	0
Debt, Net of Unamortized Issuance Costs	3,439	2,844
Other Noncurrent Liabilities	49	50
Long-Term Intercompany Note Payable	0	0
Equity-Tesoro Corporation	941	898
Equity-Noncontrolling Interest	2,695	2,527
Total Liabilities and Equity	7,735	6,913
Parent Company [Member]
Current Assets
Cash and cash equivalents	0	0	$ 0	$ 0
Receivables, net of allowance for doubtful accounts	7	0
Short-term receivables from affiliates	0	0
Inventories, net	0	0
Prepayments and other current assets	47	116
Total Current Assets	54	116
Property, Plant and Equipment, Net	0	0
Investment in Subsidiaries	9,125	8,133
Long-Term Receivables from Affiliates	1,454	1,517
Long-Term Intercompany Note Receivable	0	0
Other Noncurrent Assets
Acquired Intangibles, Net	0	0
Other Noncurrent Assets, Net	46	33
Total Assets	10,679	9,799
Current Liabilities
Accounts payable	1	0
Short-term payables to affiliates	0	0
Other current liabilities	125	91
Total Current Liabilities	126	91
Long-Term Payables to Affiliates	0	0
Deferred Income Taxes	1,443	1,227
Debt, Net of Unamortized Issuance Costs	1,189	1,190
Other Noncurrent Liabilities	395	452
Long-Term Intercompany Note Payable	2,026	1,626
Equity-Tesoro Corporation	5,500	5,213
Equity-Noncontrolling Interest	0	0
Total Liabilities and Equity	$ 10,679	$ 9,799

XML

Condensed Consolidating Financial Information Condensed Consolidating Financial Information, Cash Flows (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Cash Flows From (Used In) Operating Activities
Net Cash Provided by (Used in) Operating Activities			$ 1,201	$ 1,847
Cash Flows From (Used In) Investing Activities
Capital expenditures			623	773
Acquisition, net of cash			412	6
Proceeds from asset sales			18	0
Intercompany notes, net			0	0
Notes to General Partner			0
Investment in subsidiaries			0
Other investing activities			3	4
Net cash used in investing activities			(1,020)	(783)
Cash Flows From (Used In) Financing Activities
Borrowings under revolving credit agreements			761	346
Repayments on revolving credit agreements			666	326
Proceeds from debt offering			701	0
Repayments of debt			258	402
Dividend payments	$ 65	$ 62	186	169
Net proceeds from issuance of Tesoro Logistics LP common units			364	71
Notes from General Partner			0
Distributions to noncontrolling interest			155	135
Purchases of common stock			242	494
Taxes paid related to net share settlement of equity awards			25	45
Net intercompany repayments			0	0
Contribution by parent			0
Distributions to TLLP unitholders and general partner			0	0
Other financing activities			(30)	49
Net cash from (used in) financing activities			264	(1,105)
Increase (Decrease) in Cash And Cash Equivalents			445	(41)
Cash and Cash Equivalents, Beginning of Period			942	1,000
Cash and Cash Equivalents, End of Period	1,387	959	1,387	959
Consolidating Adjustments
Cash Flows From (Used In) Operating Activities
Net Cash Provided by (Used in) Operating Activities			0	0
Cash Flows From (Used In) Investing Activities
Capital expenditures			0	0
Acquisition, net of cash			0	0
Proceeds from asset sales			0
Intercompany notes, net			(349)	(1,077)
Notes to General Partner			400
Investment in subsidiaries			(425)
Other investing activities			0	0
Net cash used in investing activities			476	(1,077)
Cash Flows From (Used In) Financing Activities
Borrowings under revolving credit agreements			0	0
Repayments on revolving credit agreements			0	0
Proceeds from debt offering			0
Repayments of debt			0	0
Dividend payments			0	0
Net proceeds from issuance of Tesoro Logistics LP common units			0	0
Notes from General Partner			(400)
Distributions to noncontrolling interest			0	0
Purchases of common stock			0	0
Taxes paid related to net share settlement of equity awards			0	0
Net intercompany repayments			349	1,077
Contribution by parent			(425)
Distributions to TLLP unitholders and general partner			0	0
Other financing activities			0	0
Net cash from (used in) financing activities			(476)	1,077
Increase (Decrease) in Cash And Cash Equivalents			0	0
Cash and Cash Equivalents, Beginning of Period			0	0
Cash and Cash Equivalents, End of Period	0	0	0	0
Parent Company [Member]
Cash Flows From (Used In) Operating Activities
Net Cash Provided by (Used in) Operating Activities			(20)	(16)
Cash Flows From (Used In) Investing Activities
Capital expenditures			0	0
Acquisition, net of cash			0	0
Proceeds from asset sales			17
Intercompany notes, net			349	1,077
Notes to General Partner			0
Investment in subsidiaries			319
Other investing activities			0	0
Net cash used in investing activities			47	1,077
Cash Flows From (Used In) Financing Activities
Borrowings under revolving credit agreements			0	0
Repayments on revolving credit agreements			0	0
Proceeds from debt offering			0
Repayments of debt			0	398
Dividend payments			186	169
Net proceeds from issuance of Tesoro Logistics LP common units			0	0
Notes from General Partner			400
Distributions to noncontrolling interest			0	0
Purchases of common stock			242	494
Taxes paid related to net share settlement of equity awards			25	45
Net intercompany repayments			0	0
Contribution by parent			0
Distributions to TLLP unitholders and general partner			38	33
Other financing activities			(12)	12
Net cash from (used in) financing activities			(27)	(1,061)
Increase (Decrease) in Cash And Cash Equivalents			0	0
Cash and Cash Equivalents, Beginning of Period			0	0
Cash and Cash Equivalents, End of Period	0	0	0	0
Guarantor Subsidiaries [Member]
Cash Flows From (Used In) Operating Activities
Net Cash Provided by (Used in) Operating Activities			687	1,481
Cash Flows From (Used In) Investing Activities
Capital expenditures			484	527
Acquisition, net of cash			360	0
Proceeds from asset sales			1
Intercompany notes, net			0	0
Notes to General Partner			0
Investment in subsidiaries			106
Other investing activities			0	4
Net cash used in investing activities			(949)	(531)
Cash Flows From (Used In) Financing Activities
Borrowings under revolving credit agreements			0	0
Repayments on revolving credit agreements			0	0
Proceeds from debt offering			0
Repayments of debt			6	4
Dividend payments			0	0
Net proceeds from issuance of Tesoro Logistics LP common units			0	0
Notes from General Partner			0
Distributions to noncontrolling interest			0	0
Purchases of common stock			0	0
Taxes paid related to net share settlement of equity awards			0	0
Net intercompany repayments			(117)	(998)
Contribution by parent			319
Distributions to TLLP unitholders and general partner			17	(2)
Other financing activities			0	37
Net cash from (used in) financing activities			213	(967)
Increase (Decrease) in Cash And Cash Equivalents			(49)	(17)
Cash and Cash Equivalents, Beginning of Period			895	943
Cash and Cash Equivalents, End of Period	846	926	846	926
Non-Guarantor Subsidiaries [Member]
Cash Flows From (Used In) Operating Activities
Net Cash Provided by (Used in) Operating Activities			534	382
Cash Flows From (Used In) Investing Activities
Capital expenditures			139	246
Acquisition, net of cash			52	6
Proceeds from asset sales			0
Intercompany notes, net			0	0
Notes to General Partner			(400)
Investment in subsidiaries			0
Other investing activities			3	0
Net cash used in investing activities			(594)	(252)
Cash Flows From (Used In) Financing Activities
Borrowings under revolving credit agreements			761	346
Repayments on revolving credit agreements			666	326
Proceeds from debt offering			701
Repayments of debt			252	0
Dividend payments			0	0
Net proceeds from issuance of Tesoro Logistics LP common units			364	71
Notes from General Partner			0
Distributions to noncontrolling interest			155	135
Purchases of common stock			0	0
Taxes paid related to net share settlement of equity awards			0	0
Net intercompany repayments			(232)	(79)
Contribution by parent			106
Distributions to TLLP unitholders and general partner			(55)	(31)
Other financing activities			(18)	0
Net cash from (used in) financing activities			554	(154)
Increase (Decrease) in Cash And Cash Equivalents			494	(24)
Cash and Cash Equivalents, Beginning of Period			47	57
Cash and Cash Equivalents, End of Period	$ 541	$ 33	$ 541	$ 33