10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10‑Q

(Mark One)

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

For the quarterly period ended June 30, 2012

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. Yes  R   No  £

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).  Yes R No £

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   R Accelerated filer   £ Non-accelerated filer   £ Smaller reporting company  £

(Do not check if a 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   £    No  R

There were 139,795,520 shares of the registrant's Common Stock outstanding at July 30, 2012.

TESORO CORPORATION

QUARTERLY REPORT ON FORM 10-Q

FOR THE QUARTERLY PERIOD ENDED JUNE 30, 2012

TABLE OF CONTENTS

PART I. FINANCIAL INFORMATION	Page
Item 1. Financial Statements (Unaudited)
Condensed Consolidated Balance Sheets - June 30, 2012 and December 31, 2011	3
Condensed Statements of Consolidated Operations and Comprehensive Income - Three and Six Months Ended June 30, 2012 and 2011	4
Condensed Statements of Consolidated Cash Flows - Six Months Ended June 30, 2012 and 2011	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	50
Item 4. Controls and Procedures	52
PART II. OTHER INFORMATION
Item 1. Legal Proceedings	53
Item 1A. Risk Factors	54
Item 2. Unregistered Sales of Equity Securities and Use of Proceeds	55
Item 6. Exhibits	56
SIGNATURES	57
EXHIBIT INDEX	58

2

PART I — FINANCIAL INFORMATION

ITEM 1. FINANCIAL STATEMENTS

TESORO CORPORATION

CONDENSED CONSOLIDATED BALANCE SHEETS

(Unaudited)

	June 30, 2012			December 31, 2011
	(Dollars in millions except per share amounts)
ASSETS
CURRENT ASSETS
Cash and cash equivalents	$	1,322		$	900
Receivables, less allowance for doubtful accounts	1,162			1,272
Inventories	1,781			1,763
Prepayments and other current assets	148			216
Total Current Assets	4,413			4,151
PROPERTY, PLANT AND EQUIPMENT
Property, plant and equipment, at cost	7,319			7,055
Less accumulated depreciation and amortization	(2,031		)	(1,907		)
Net Property, Plant and Equipment	5,288			5,148
OTHER NONCURRENT ASSETS
Acquired intangibles, net	220			226
Other, net	487			367
Total Other Noncurrent Assets	707			593
Total Assets	$	10,408		$	9,892
LIABILITIES AND EQUITY
CURRENT LIABILITIES
Accounts payable	$	2,191		$	2,305
Accrued liabilities	577			526
Current maturities of debt	352			418
Total Current Liabilities	3,120			3,249
DEFERRED INCOME TAXES	955			815
OTHER NONCURRENT LIABILITIES	560			567
DEBT	1,350			1,283
COMMITMENTS AND CONTINGENCIES (Note J)
EQUITY
TESORO CORPORATION STOCKHOLDERS' EQUITY
Common stock, par value $0.162/3; authorized 200,000,000 shares; 151,701,485 shares issued (150,733,991 in 2011)	25			25
Preferred stock, no par value; authorized 5,000,000 shares; 0 shares issued	—			—
Additional paid-in capital	1,031			1,000
Retained earnings	3,387			2,944
Treasury stock, 11,906,780 common shares (10,769,510 in 2011), at cost	(256		)	(226		)
Accumulated other comprehensive loss	(75		)	(75		)
Total Tesoro Corporation Stockholders' Equity	4,112			3,668
NONCONTROLLING INTEREST	311			310
Total Equity	4,423			3,978
Total Liabilities and Equity	$	10,408		$	9,892

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

3

TESORO CORPORATION

CONDENSED STATEMENTS OF CONSOLIDATED OPERATIONS AND COMPREHENSIVE INCOME

(Unaudited)

	Three Months Ended						Six Months Ended
	June 30,						June 30,
	2012			2011			2012			2011
	(In millions except per share amounts)
REVENUES (a)	$	8,105		$	7,963		$	15,925		$	14,489
COSTS AND EXPENSES:
Cost of sales (a)	6,885			6,985			14,053			12,720
Operating expenses	377			372			724			743
Selling, general and administrative expenses	47			27			109			122
Depreciation and amortization expense	109			106			212			209
Loss on asset disposals and impairments	6			54			12			57
OPERATING INCOME	681			419			815			638
Interest and financing costs	(34		)	(60		)	(70		)	(103		)
Other expense, net	(18		)	—			(17		)	—
Foreign currency exchange loss	(1		)	(2		)	(1		)	(1		)
EARNINGS BEFORE INCOME TAXES	628			357			727			534
Income tax expense	235			135			272			205
NET EARNINGS	393			222			455			329
Less net income attributable to noncontrolling interest	6			4			12			4
NET EARNINGS ATTRIBUTABLE TO TESORO CORPORATION	$	387		$	218		$	443		$	325
NET EARNINGS PER SHARE:
Basic	$	2.77		$	1.54		$	3.18		$	2.29
Diluted	$	2.75		$	1.52		$	3.14		$	2.26
WEIGHTED AVERAGE COMMON SHARES:
Basic	139.6			142.6			139.5			142.1
Diluted	140.5			144.4			141.2			144.2
COMPREHENSIVE INCOME
Total comprehensive income	$	393		$	222		$	455		$	329
Less noncontrolling interest in comprehensive income	6			4			12			4
COMPREHENSIVE INCOME ATTRIBUTABLE TO TESORO CORPORATION	$	387		$	218		$	443		$	325
SUPPLEMENTAL INFORMATION:
(a) Includes excise taxes collected by our retail segment (excluding credits)	$	112		$	92		$	211		$	183

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

4

TESORO CORPORATION

CONDENSED STATEMENTS OF CONSOLIDATED CASH FLOWS

(Unaudited)

	Six Months Ended
	June 30,
	2012			2011
	(Dollars in millions)
CASH FLOWS FROM (USED IN) OPERATING ACTIVITIES
Net earnings	$	455		$	329
Adjustments to reconcile net earnings to net cash from (used in) operating activities:
Depreciation and amortization expense	212			209
Amortization of debt issuance costs and discounts	6			10
Loss on asset disposals and impairments	12			57
Stock-based compensation expense	21			35
Write-off of unamortized debt issue costs and discounts	—			13
Deferred income taxes	146			156
Excess tax benefits from stock-based compensation arrangements	(4		)	(7		)
Other changes in noncurrent assets and liabilities	(205		)	(50		)
Changes in current assets and current liabilities:
Receivables	110			(469		)
Inventories	(13		)	(597		)
Prepayments and other	55			(75		)
Accounts payable and accrued liabilities	(71		)	478
Net cash from operating activities	724			89
CASH FLOWS FROM (USED IN) INVESTING ACTIVITIES
Capital expenditures	(243		)	(112		)
Proceeds from asset sales	3			1
Acquisitions	(38		)	—
Net cash used in investing activities	(278		)	(111		)
CASH FLOWS FROM (USED IN) FINANCING ACTIVITIES
Borrowings under revolving credit agreements	185			115
Repayments on revolving credit agreements	(184		)	(160		)
Repayments of debt	(1		)	(244		)
Proceeds from stock options exercised	14			7
Proceeds from issuance of common units -Tesoro Logistics LP	—			288
Distributions to noncontrolling interest	(11		)	—
Purchases of common stock	(31		)	(7		)
Excess tax benefits from stock-based compensation arrangements	4			7
Financing costs and other	—			(25		)
Net cash used in financing activities	(24		)	(19		)
INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	422			(41		)
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	900			648
CASH AND CASH EQUIVALENTS, END OF PERIOD	$	1,322		$	607
SUPPLEMENTAL CASH FLOW DISCLOSURES
Interest paid, net of capitalized interest	$	50		$	62
Income taxes paid, net	$	1		$	61
SUPPLEMENTAL DISCLOSURE OF NON-CASH INVESTING ACTIVITIES
Capital expenditures included in accounts payable and accrued liabilities at end of period	$	52		$	16

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

5

TESORO CORPORATION

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

NOTE A – BASIS OF PRESENTATION

As used in this report, the terms “Tesoro,” “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.

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”). The accompanying condensed consolidated financial statements 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, 2011, 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 fairly present the information. 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, 2011.

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 of assets and liabilities and disclosures of contingent 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, based on currently available information. Changes in facts and circumstances may result in revised estimates and actual results could differ from those estimates. The results of operations for any interim period are not necessarily indicative of results for the full year. Certain prior year balances have been reclassified in order to conform to the current year presentation.

Our consolidated financial statements include TLLP, a variable interest entity. 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. Under our long-term transportation agreements with TLLP (discussed further below), transactions with us accounted for 98% of TLLP’s total revenues for the three and six months ended June 30, 2012, respectively. As TLLP does not derive a significant amount of revenue from third parties, there is limited risk to Tesoro associated with TLLP’s operations. However, in the event that TLLP incurs a loss, our operating results will reflect TLLP’s loss, net of intercompany eliminations, to the extent of our ownership interest in TLLP.

New Accounting Standards

The Financial Accounting Standards Board (“FASB”) issued an Accounting Standards Update (“ASU”) in July 2012 related to testing indefinite-lived intangible assets for impairment. This ASU provides the option to assess qualitative factors first to determine whether it is necessary to perform the quantitative impairment test. If the Company believes, as a result of its qualitative assessment, that it is more-likely-than-not that the fair value of the indefinite-lived intangible asset is less than its carrying amount, the quantitative impairment test is required. Otherwise, no further testing is required. The Company can choose to assess qualitative factors first on none, some or all of its indefinite-lived intangible assets. The standard is effective for annual and interim impairment tests performed for fiscal years beginning after September 15, 2012. However, an entity can choose to early adopt the standard, provided that the entity has not yet performed its 2012 annual impairment test or issued its financial statements. Our indefinite-lived intangible assets are immaterial to our condensed consolidated financial statements. The adoption of this standard will not have a material impact on our condensed consolidated financial statements.

The FASB issued an ASU in December 2011, which requires an entity to disclose information about offsetting and related arrangements to enable users of its financial statements to understand the effect of these arrangements on its financial position. The guidance requires entities to disclose both gross information and net information about both instruments and transactions eligible for offset in the balance sheet and instruments and transactions subject to an agreement similar to a master netting arrangement. These provisions are effective for interim and annual reporting periods beginning on January 1, 2013. The adoption of this guidance will not have a material impact on our financial position, but may result in additional disclosures.

6

TESORO CORPORATION

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

The FASB issued an ASU in May 2011 related to fair value measurements and disclosures to achieve common fair value measurements and additional consistency of disclosures between U.S. GAAP and International Financial Reporting Standards. This standard includes amendments that clarify the application of existing fair value measurements and disclosure requirements, while other amendments change a principle or requirement for fair value measurements or disclosures. Some of the changes include (1) the application of the highest and best use and valuation premise concepts, (2) measuring the fair value of an instrument classified in a reporting entity’s shareholders’ equity, and (3) quantitative information required for fair value measurements categorized within level 3 of the fair value hierarchy. In addition, this standard requires additional disclosure for level 3 measurements regarding the sensitivity of fair value to changes in unobservable inputs and any interrelationships between those inputs. The adoption of this guidance, effective January 1, 2012, did not have a material impact on our condensed consolidated financial statements.

NOTE B – TESORO LOGISTICS LP

Tesoro Logistics LP 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 distribute, transport and store crude oil and refined products. Its assets consist of a crude oil gathering system in the Bakken Shale/Williston Basin area of North Dakota and Montana, eight refined products terminals in the midwestern and western United States, one crude oil marine terminal in California, and a crude oil and refined products storage facility and five related short-haul pipelines in Utah.

Effective April 1, 2012, Tesoro entered into a transaction (the “Martinez Terminal Sale”) to sell to TLLP the Martinez Crude Oil Marine Terminal (the “Martinez Terminal”) and associated pipelines for $75 million, comprised of $67.5 million in cash financed with borrowings under the TLLP Revolving Credit Facility and the issuance of equity with a combined fair value of $7.5 million. The equity issued is comprised of 206,362 common units, representing an approximate 1% limited partner interest in TLLP, and 4,212 general partner units. The Martinez Terminal consists of a single-berth dock, which has an estimated throughput capacity of approximately 145 thousand barrels per day (“Mbpd”), five associated crude oil storage tanks with a combined capacity of 425,000 barrels, two firewater tanks with 48,000 barrels of shell capacity and related pipelines that receive crude oil from third-party vessels for delivery to our Martinez refinery and a third-party terminal.

As of June 30, 2012, we owned a 52% interest in TLLP, including the 2% general partner interest. We are TLLP’s primary beneficiary; therefore we consolidate TLLP into our financial results. Our interest includes 511,252 common units, 15,254,890 subordinated units and 626,861 general partner units as of June 30, 2012. All intercompany transactions with TLLP are eliminated in our consolidated balances.

TLLP generates revenue by charging fees for gathering, transporting and storing crude oil and for terminalling, transporting and storing refined products. We do not provide financial or equity support through any liquidity arrangements and/or financial guarantees to TLLP.

TLLP provides us with various pipeline transportation, trucking, terminal distribution and storage services under various long-term, fee-based commercial agreements expiring 2016 through 2022, including a 10- year use and throughput agreement that was entered into in connection with the Martinez Terminal Sale. Under this agreement, we are obligated to transport an average of at least 65 Mbpd of crude oil per month at a throughput and tankage fee of $0.55 per barrel. Each of the agreements with TLLP contain minimum volume commitments with the exception of the Salt Lake City storage and transportation services agreement. Each agreement, with the exception of the trucking transportation agreement, has fees that are indexed for inflation and provides us with options to renew for two additional five-year terms. The fees under the trucking transportation agreement are adjusted annually as a result of a competitive bidding process, and the agreement will renew automatically for onefive-year term unless earlier terminated by us or TLLP.

In April 2011, weentered into an omnibus agreement, which among other things, addresses the payment of an annual fee to us, initially in the amount of $2.5 million, for the provision of various general and administrative services provided to TLLP. We amended and restated the omnibus agreement (“Amended Omnibus Agreement”) in connection with the Martinez Terminal Sale. Under the Amended Omnibus Agreement, TLLP reimburses us for the provision of certain operational services in support of their pipelines, terminals and storage facility. Additional sales of assets from the Company and its affiliates to TLLP, including the assets in the Martinez Terminal Sale, are governed by the Amended Omnibus Agreement. The fee payable to us for the provision of various general and administrative services under the Amended Omnibus Agreement did not change.

7

TESORO CORPORATION

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

Effective March 30, 2012, TLLP amended its senior secured revolving credit agreement (“TLLP Revolving Credit Facility”) with a syndicate of banks and financial institutions. TLLP is an excluded subsidiary under our Revolving Credit Facility. For additional information regarding our credit facilities and the TLLP Revolving Credit Facility amendment, see Note G.

TLLP is a consolidated variable interest entity. With the exception of affiliate balances, which are eliminated in consolidation, and their impact on equity, the TLLP condensed combined consolidated balance sheets as of June 30, 2012 and December 31, 2011, as presented below, are included in the condensed consolidated balance sheets of Tesoro Corporation.

	June 30, 2012		December 31, 2011 (a)
	(In millions)
ASSETS
Cash and cash equivalents	$	21	$	18
Receivables, less allowance for doubtful accounts
Trade	1		1
Affiliate	9		11
Prepayments and other current assets	1		1
Net Property, Plant and Equipment	181		174
Other Noncurrent Assets	2		3
Total Assets	$	215	$	208
LIABILITIES AND EQUITY
Accounts payable
Trade	$	8	$	6
Affiliate	3		3
Deferred revenue - affiliate	2		2
Accrued liabilities	1		2
Other noncurrent liabilities	—		3
Debt	118		50
Equity	83		142
Total Liabilities and Equity	$	215	$	208

________________

(a) Adjusted to include the historical results of the Martinez Terminal.

8

TESORO CORPORATION

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

NOTE C – 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, principally consisting of common stock options, non-vested restricted stock, restricted stock units, market stock units and performance share awards outstanding during the period.

Share and per share calculations are presented below (in millions except per share amounts):

	Three Months Ended				Six Months Ended
	June 30,				June 30,
	2012		2011		2012		2011
Basic:
Net earnings attributable to Tesoro Corporation stockholders	$	387	$	218	$	443	$	325
Weighted average common shares outstanding	139.6		142.6		139.5		142.1
Basic Earnings Per Share	$	2.77	$	1.54	$	3.18	$	2.29
Diluted:
Net earnings attributable to Tesoro Corporation stockholders	$	387	$	218	$	443	$	325
Weighted average common shares outstanding	139.6		142.6		139.5		142.1
Common stock equivalents	0.9		1.8		1.7		2.1
Total diluted shares	140.5		144.4		141.2		144.2
Diluted Earnings Per Share	$	2.75	$	1.52	$	3.14	$	2.26

Potentially dilutive common stock equivalents excluded from the calculation of diluted earnings per share, as the effect of including such securities would have been anti-dilutive, were as follows (in millions):

	Three Months Ended		Six Months Ended
	June 30,		June 30,
	2012	2011	2012	2011
Stock options (a)	2.8	3.1	2.9	3.1

________________

(a) Stock options presented above were excluded as the exercise prices were greater than the average market price of the common stock during each respective reporting period.

NOTE D – INVENTORIES

Components of inventories were as follows (in millions):

	June 30, 2012		December 31, 2011
Domestic crude oil and refined products	$	1,362	$	1,273
Foreign subsidiary crude oil	277		346
Materials and supplies	90		87
Oxygenates and by-products	36		43
Merchandise	16		14
Total Inventories	$	1,781	$	1,763

We use the last-in, first-out cost method as the primary method to determine the cost of crude oil held by our U.S. subsidiaries (“Domestic crude oil”) and refined product inventories in our refining and retail segments. We determine the carrying value of inventories of crude oil held by our foreign subsidiaries (“Foreign subsidiary crude oil”), oxygenates, and by-products using the first-in, first-out cost method. The total carrying value of our crude oil and refined product inventories was less than replacement cost by approximately $1.5 billion and $1.7 billion at June 30, 2012 and December 31, 2011, respectively.

9

TESORO CORPORATION

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

NOTE E – FAIR VALUE MEASUREMENTS

We classify financial assets and financial liabilities into the following fair value hierarchy:

• level 1 - quoted prices in active markets for identical assets and liabilities;

• level 2 - quoted prices for similar assets and liabilities in active markets, and inputs other than quoted prices that are observable for the asset or liability; and

• level 3 - unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities.

We measure fair value using level 1 inputs, when available, because they provide the most reliable evidence of fair value. Derivative instruments and our Renewable Identification Numbers (“RINs”) are our only financial assets and financial liabilities measured at fair value on a recurring basis. See Note F for further information on the Company’s derivative instruments.

Our derivative instruments consist primarily of options, exchange-traded futures (“Futures Contracts”), over-the-counter swaps and options (“OTC Swap Contracts” and “OTC Option Contracts,” respectively), and physical commodity forward purchase and sale contracts (“Forward Contracts”). Futures Contracts are valued based on quoted prices from exchanges and are categorized in level 1 or level 2 of the fair value hierarchy based on the liquidity of the instrument. OTC Swap Contracts, OTC Option Contracts and Forward Contracts are valued using third-party broker quotes, industry pricing services and price curves derived from commodity exchange postings, with consideration of counterparty credit risk. These quotes are corroborated with market data and are categorized in level 2 of the fair value hierarchy. We did not have any derivative assets or liabilities classified as level 3 at June 30, 2012 or December 31, 2011.

Our RINs obligation represents a liability for the purchase of RINs to satisfy our obligation to blend biofuels into the products we produce.  RINs are assigned to biofuel produced or imported into the U.S. as required by the U.S. Environmental Protection Agency (“EPA”), which was implemented in accordance with the Renewable Fuel Standard of the Energy Policy Act of 2005 and expanded by the Energy Independence and Security Act of 2007.  The EPA sets annual quotas for the percentage of biofuels that must be blended into transportation fuels consumed in the U.S., and as a producer of transportation fuels from petroleum, we are obligated to blend biofuels into the products we produce at a rate that is at least equal to the EPA’s quota.  To the degree we are unable to blend at that rate, we must purchase RINs in the open market to satisfy our obligation.  Our RINs obligation is based on our RINs deficiency and the price of those RINs as of the balance sheet date.  Our RINs obligation is categorized in level 2 of the fair value hierarchy and is measured at fair value using the market approach based on quoted prices from an independent pricing service.

Financial instruments recognized at fair values in our condensed consolidated balance sheets by level within the fair value hierarchy were as follows (in millions):

	Level 1		Level 2		Level 3		Netting and Collateral (a)			Total as of June 30, 2012
Assets:
Commodity Futures Contracts	$	588	$	4	$	—	$	(572	)	$	20
Commodity OTC Swap Contracts	—		3		—		(3		)	—
Commodity Forward Contracts	—		6		—		—			6
Total Assets	$	588	$	13	$	—	$	(575	)	$	26
Liabilities:
Commodity Futures Contracts	$	595	$	7	$	—	$	(593	)	$	9
Commodity OTC Swap Contracts	—		3		—		(3		)	—
RINs Obligation	—		6		—		—			6
Total Liabilities	$	595	$	16	$	—	$	(596	)	$	15

10

TESORO CORPORATION

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

	Level 1		Level 2		Level 3		Netting and Collateral (a)			Total as of December 31, 2011
Assets:
Commodity Futures Contracts	$	86	$	9	$	—	$	(61	)	$	34
Commodity OTC Swap Contracts	—		3		—		(2		)	1
Commodity Forward Contracts	—		4		—		—			4
Total Assets	$	86	$	16	$	—	$	(63	)	$	39
Liabilities:
Commodity Futures Contracts	$	130	$	6	$	—	$	(136	)	$	—
Commodity OTC Swap Contracts	—		3		—		(2		)	1
Commodity Forward Contracts	—		1		—		—			1
RINs Obligation	—		3		—		—			3
Total Liabilities	$	130	$	13	$	—	$	(138	)	$	5

________________

(a) Represents the impact of netting assets, liabilities and cash collateral when a legal right of offset exists. As of June 30, 2012 and December 31, 2011, cash collateral amounts of $21 million and $75 million, respectively, are netted with mark-to-market derivative assets.

Certain of our derivative contracts, under master netting arrangements, include both asset and liability positions. We have elected to 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.

Physical inventory associated with certain Futures Contracts included in the above table is designated for fair value hedge accounting treatment and is adjusted to fair value at the end of the period. At December 31, 2011, the fair value adjustment related to the physical inventory was approximately $4 million. There were no fair value adjustments to the physical inventory at June 30, 2012.

We believe the carrying value of our 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 (less than one percent of our trade receivables and payables are outstanding for greater than 90 days); and

• the expected future insignificance of bad debt expense, which includes an evaluation of counterparty credit risk.

The fair value of our 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 $1.7 billion and $1.8 billion, respectively, at both June 30, 2012 and December 31, 2011.

There were no material nonfinancial assets or liabilities that were measured at fair value during the six months ended June 30, 2012.

NOTE F - DERIVATIVE INSTRUMENTS

The timing, direction and overall change in refined product prices versus crude oil prices impacts profit margins and has a significant impact on our earnings and cash flows. Consequently, we use non-trading derivative instruments to manage exposure to commodity price risks associated with the purchase or sale of feedstocks, refined products and energy supplies to or from the Company’s refineries, terminals, retail operations and customers. We also use non-trading derivative instruments to manage price risks associated with inventories above or below our target levels. To achieve our objectives, we use derivative instruments such as Options, Futures Contracts, OTC Swap Contracts, OTC Option Contracts and Forward Contracts, all generally with maturity dates of less than 18 months. We believe that there is minimal credit risk with respect to our counterparties.

11

TESORO CORPORATION

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

We may use our excess storage capacity in Panama to take advantage of contango markets when the future price of crude oil is higher than the current spot price. We use commodity derivatives to manage price risk and hedge crude oil held in connection with these arbitrage opportunities.

We are exposed to exchange rate fluctuations on our purchases of Canadian crude oil. We enter into forward contracts of Canadian dollars to manage monthly exchange rate fluctuations.

The accounting for changes in the fair value of a commodity derivative depends on whether the derivative has been designated in a hedging relationship and whether we have elected the normal purchases and normal sales exception. The accounting for the change in fair value can be summarized as follows:

Derivative Treatment	Accounting Method
Normal purchases and normal sales exception	Accrual accounting
Designated in qualifying hedging relationship	Hedge accounting
All other derivatives	Mark-to-market accounting

The primary derivative instruments that we use have the following characteristics. Option contracts provide the right, but not the obligation to buy or sell the commodity at a specified price in the future. Futures Contracts include a requirement to buy or sell the commodity at a fixed price in the future. OTC Swap Contracts, OTC Option Contracts and Forward Contracts require cash settlement for the commodity based on the difference between a fixed or floating price and the market price on the settlement date. Certain of these contracts require cash collateral if our liability position exceeds specified thresholds. At June 30, 2012, we had no cash collateral outstanding related to our OTC Swap Contracts.

The following table presents the fair value (in millions) of our derivative instruments as of June 30, 2012 and December 31, 2011. 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 have elected to offset the recognized fair value amounts for multiple derivative instruments executed with the same counterparty in our financial statements. As a result, the asset and liability amounts below will not agree with the amounts presented in our condensed consolidated balance sheets.

		Derivative Assets						Derivative Liabilities
	Balance Sheet Location	June 30, 2012			December 31, 2011			June 30, 2012			December 31, 2011
Mark-to-Market Derivatives (a):
Commodity Futures Contracts	Prepayments and other current assets	$	592		$	95		$	602		$	136
Commodity OTC Swap Contracts	Receivables	3			1			—			—
Commodity OTC Swap Contracts	Accounts payable	—			2			3			3
Commodity Forward Contracts	Receivables	6			4			—			—
Commodity Forward Contracts	Accounts payable	—			—			—			1
Total Gross Mark-to-Market Derivatives		601			102			605			140
Less: Counterparty Netting and Cash Collateral (b)		(575		)	(63		)	(596		)	(138		)
Total Net Fair Value of Derivatives		$	26		$	39		$	9		$	2

________________

(a) The above fair values are presented as gross amounts, including when the derivatives are subject to master netting arrangements and qualify for net presentation in the condensed consolidated balance sheet.

(b) As of June 30, 2012 and December 31, 2011, cash collateral amounts of $21 million and $75 million, respectively, are being netted with mark-to-market commodity future contracts.

12

TESORO CORPORATION

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

Gains (losses) for our mark-to market derivatives for the three and six months ended June 30, 2012 and 2011, were as follows (in millions):

	Three Months Ended						Six Months Ended
	June 30,						June 30,
Mark-to-Market Derivatives:	2012			2011			2012			2011
Commodity Futures Contracts	$	50		$	88		$	38		$	32
Commodity OTC Swap Contracts	—			2			(6		)	1
Commodity Forward Contracts	6			(8		)	3			(1		)
Foreign Currency Forward Contracts	(2		)	(2		)	(1		)	(1		)
Total Mark-to-Market Derivatives	$	54		$	80		$	34		$	31

The income statement location of gains (losses) for our mark-to market derivatives above were as follows (in millions):

	Three Months Ended						Six Months Ended
	June 30,						June 30,
Income Statement Location:	2012			2011			2012			2011
Revenues	$	31		$	12		$	21		$	—
Cost of sales	25			70			14			32
Foreign currency exchange loss	(2		)	(2		)	(1		)	(1		)
Total Gain on Mark-to-Market Derivatives	$	54		$	80		$	34		$	31

Gains (losses) on our derivatives designated for hedge accounting during the three and six months ended June 30, 2012, were as follows (in millions):

	Three Months Ended					Six Months Ended
	June 30,					June 30,
Derivatives Designated for Hedge Accounting:	2012		2011			2012		2011
Commodity Futures Contracts (a):
Recognized in Income on Derivatives	$	—	$	4		$	—	$	3
Recognized in Income on Hedged Item	—		(4		)	—		(4		)
Recognized in Income on Ineffective Portion of Derivative (b)	$	—	$	—		$	—	$	(1	)

________________

(a) Losses recognized in income on the derivative and the hedged item are included in cost of sales in the statements of condensed consolidated operations.

(b) For fair value hedges, no component of the derivative instruments’ gains or losses was excluded from the assessment of hedge effectiveness. No amounts were recognized in income for hedged firm commitments that no longer qualify as fair value hedges.

Open Long (Short) Positions

All of our open positions are scheduled to mature within 18 months. As of June 30, 2012, we had open forward contracts to purchase CAD $52 million and CAD $26 million that mature on July 25, 2012 and August 24, 2012, respectively. We did not have any open contract volumes designated for fair value hedge accounting as of June 30, 2012.

13

TESORO CORPORATION

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

The information below presents the net volume of outstanding commodity contracts by type of instrument and year of maturity as of June 30, 2012 (volumes in thousands of barrels):

Mark-to-Market Derivatives
Derivative instrument and Year of maturity	Long (Short) Contract Volumes
Futures
2012	(1,075)
2013	(283)
Forwards
2012	(1,499)
Options
2012	25

NOTE G – DEBT

Our total debt at June 30, 2012 and December 31, 2011, was comprised of the following (in millions):

Debt, including current maturities:	June 30, 2012		December 31, 2011
Tesoro Corporation Revolving Credit Facility	$	—	$	—
Tesoro Panama Company S.A. (“TPSA”) Revolving Credit Facility	50		117
TLLP Revolving Credit Facility	118		50
6¼% Senior Notes Due 2012	299		299
65/8% Senior Notes Due 2015	450		450
6½% Senior Notes Due 2017	473		473
9¾% Senior Notes Due 2019 (net of unamortized discount of $9 million)	291		291
Capital Lease Obligations and Other	21		21
Total Debt	$	1,702	$	1,701

For additional information regarding our outstanding debt, see “Capital Resources and Liquidity” in Management's Discussion and Analysis of Financial Condition and Results of Operations in Item 2.

Credit Facilities Overview

As of June 30, 2012, our credit facilities were subject to the following expenses and fees:

Credit Facility	30 day Eurodollar (LIBOR) Rate	Eurodollar Margin	Base Rate	Base Rate Margin	Commitment Fee (unused portion)
Tesoro Corporation Revolving Credit Facility ($1.85 billion) (a)	0.25%	1.75%	3.25%	0.75%	0.375%
TPSA Revolving Credit Facility ($500 million) (a)	0.25%	2.75%	3.25%	1.75%	N/A
TLLP Revolving Credit Facility ($300 million) (a)	0.25%	2.50%	3.25%	1.50%	0.50%

________________

(a) We have the option to elect if the borrowings will bear interest at either a base rate plus the base rate margin, or a Eurodollar rate, for the applicable period, plus, the Eurodollar margin at the time of the borrowing. Letters of credit outstanding under the Tesoro Corporation Revolving Credit Facility and the TPSA Revolving Credit Facility incur fees at the Eurodollar margin rate and the base rate margin, respectively.

14

TESORO CORPORATION

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

Tesoro Corporation Revolving Credit Facility (“Revolving Credit Facility”)

The Revolving Credit Facility is guaranteed by substantially all of Tesoro’s active domestic subsidiaries, excluding Tesoro Logistics GP (“TLGP”) and TLLP and its subsidiaries, and is secured by substantially all of the crude oil and refined product inventories, cash and receivables of Tesoro's active domestic subsidiaries. TPSA is also not a guarantor of the Revolving Credit Facility. For additional information regarding TLLP, see Note B.

At June 30, 2012, our Revolving Credit Facility provided for borrowings (including letters of credit) up to the lesser of the amount of a periodically adjusted borrowing base of approximately $3.0 billion, consisting of Tesoro’s eligible cash and cash equivalents, receivables and petroleum inventories, net of the standard reserve as defined, or the Revolving Credit Facility’s total capacity of $1.85 billion. The total available capacity can be increased up to an aggregate amount of $2.25 billion, subject to receiving increased commitments. In June 2012, we amended the Revolving Credit Facility agreement to provide for the application of certain credit enhancements to transfer the credit risk associated with certain commercial trade receivables. As of June 30, 2012, we had no borrowings and $904 million in letters of credit outstanding under the Revolving Credit Facility, resulting in total unused credit availability of approximately $946 million or 51% of the eligible borrowing base.

Our committed Revolving Credit Facility is scheduled to mature on March 16, 2016. The Revolving Credit Facility will terminate if the Company does not refinance or pay in full, the Company's 6 1/4% Senior Notes due November 2012 on or prior to the stated maturity date, or refinance or pay in full, the Company's 6 5/8% Senior Notes due November 2015 on or prior to the stated maturity date.

Our Revolving Credit Agreement and senior notes each limit our restricted payments (as defined) including our ability to pay cash dividends, repurchase stock or make voluntary repayments 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 our subsidiaries ability to make certain payments and distributions.

Letter of Credit Agreements

The Revolving Credit Facility allows us to obtain letters of credit under separate letter of credit agreements for foreign crude oil purchases. As of June 30, 2012, our four separate uncommitted letter of credit agreements had $541 million outstanding. Letters of credit outstanding under these agreements incur fees 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.

TPSA Revolving Credit Facility

TPSA, a directly and wholly owned subsidiary of Tesoro, entered into a 364-day uncommitted, secured revolving credit agreement in October 2011. TPSA is an unrestricted subsidiary under our outstanding indentures. The TPSA Revolving Credit Facility is non-recourse to Tesoro and is guaranteed by TPSA’s assets. The TPSA Revolving Credit Facility includes two uncommitted facilities, which provide for revolving borrowings, swing line loans and daylight overdraft loans and letters of credit.

The maximum capacity of these facilities as of June 30, 2012, was $500 million, consisting of $350 million under the first facility and $150 million under the second facility. Our total capacity under the TPSA facilities can be further increased up to $700 million provided the facilities' maximum amounts do not exceed $550 million and $350 million, respectively. At June 30, 2012, our TPSA Revolving Credit Facility provided for borrowings (including letters of credit) up to the lesser of the amount of a periodically adjusted borrowing base that consists of TPSA's eligible receivables and petroleum inventories, net of reserves, or the agreement's capacity based on the net worth of TPSA. We had $50 million in borrowings outstanding under this agreement and no letters of credit outstanding at June 30, 2012.

TLLP Revolving Credit Facility

TLLP amended the TLLP Revolving Credit Facility effective March 30, 2012. Concurrent with the execution of the amendment, and pursuant to the terms of the original agreement, TLLP exercised its option to increase the total loan availability under the TLLP Credit Agreement from $150 million to an aggregate of $300 million. The amendment allows TLLP to request that the availability be increased up to an aggregate of $450 million, subject to receiving increased commitments from the lenders, compared to the original agreement, which allowed an aggregate capacity of $300 million. As of June 30, 2012, TLLP had $118 million in borrowings outstanding under this facility.

15

TESORO CORPORATION

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

The TLLP Revolving Credit Facility is non-recourse to Tesoro, except for TLGP, and is guaranteed by all of TLLP’s subsidiaries and secured by substantially all of TLLP’s assets. Borrowings are available under the TLLP Revolving Credit Facility up to the total available revolving capacity of the facility. The TLLP Revolving Credit Facility is scheduled to mature on April 25, 2014.

NOTE H - PROPERTY, PLANT AND EQUIPMENT

Property, plant and equipment, at cost, is as follows (in millions):

	June 30, 2012			December 31, 2011
Refining	$	6,364		$	6,161
Retail	734			679
Corporate	221			215
Property, plant and equipment, at cost	7,319			7,055
Accumulated depreciation	(2,031		)	(1,907		)
Net property, plant and equipment	$	5,288		$	5,148

We capitalize interest as part of the cost of major projects during the construction period. Capitalized interest totaled $4 million and $3 million for the three months ended June 30, 2012 and 2011, respectively, and $8 million and $7 million for the six months ended June 30, 2012 and 2011, respectively, and is recorded as a reduction to interest and financing costs.

NOTE I – BENEFIT PLANS

Tesoro sponsors the following four defined benefit pension plans: the funded qualified employee retirement plan, the unfunded nonqualified executive security plan, the unfunded nonqualified restoration retirement plan and the unfunded nonqualified supplemental executive retirement plan. Although our funded employee retirement plan fully meets all funding requirements under applicable laws and regulations, we voluntarily contributed $24 million during the six months ended June 30, 2012 to improve the funded status of the plan.

The components of pension benefit expense and other postretirement benefit expense (income) included in the condensed statements of consolidated operations for the three and six months ended June 30, 2012 and 2011, were (in millions):

	Pension Benefits
	Three Months Ended						Six Months Ended
	June 30,						June 30,
	2012			2011			2012			2011
Service cost	$	7		$	7		$	14		$	14
Interest cost	8			8			15			15
Expected return on plan assets	(6		)	(5		)	(12		)	(10		)
Recognized net actuarial loss	5			5			11			10
Recognized curtailment loss	—			1			—			3
Net Periodic Benefit Expense	$	14		$	16		$	28		$	32
	Other Postretirement Benefits
	Three Months Ended						Six Months Ended
	June 30,						June 30,
	2012			2011			2012			2011
Service cost	$	1		$	2		$	2		$	3
Interest cost	1			1			2			2
Amortization of prior service credit	(10		)	(10		)	(19		)	(19		)
Recognized net actuarial loss	3			3			6			6
Net Periodic Benefit Income	$	(5	)	$	(4	)	$	(9	)	$	(8	)

16

TESORO CORPORATION

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

NOTE J - COMMITMENTS AND CONTINGENCIES

Environmental and Tax 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 insurance or other third-party recoveries.

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.

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. We believe that resolution of any such claim(s) would not have a material impact on our financial position, results of operations and liquidity. We do not expect our unrecognized tax benefits to change significantly over the next twelve months.

Environmental Liabilities

We are incurring and expect to continue to incur expenses for environmental 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. 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 $91 million and $93 million at June 30, 2012 and December 31, 2011, respectively. These accruals include $55 million for both periods, related to environmental liabilities for site cleanup activities assumed from a prior owner, arising from operations at our Martinez refinery prior to August 2000. Certain projects at the Martinez refinery are subject to a cost-share agreement where we are responsible for 75% of the expenditures. Approximately $45 million of our obligations are related to this agreement. We cannot reasonably determine the full extent of remedial activities that may be required at the Martinez refinery. Therefore, it is possible that we will identify additional investigation and remediation costs as more information becomes available. We have filed insurance claims under environmental insurance policies that provide coverage up to $190 million for expenditures in excess of $50 million in self-insurance, but the insurer has challenged coverage and filed a declaratory relief action in federal court. We have not recognized possible insurance recoveries related to this matter.

We have investigated conditions at certain active wastewater treatment units at our Martinez refinery.  The investigation was driven by an order received in 2004 from the San Francisco Bay Regional Water Quality Control Board. The order named us as well as two previous owners of the Martinez refinery.  We cannot currently estimate the amount of the ultimate resolution of the order, but we believe it will not have a material adverse impact on our financial position, results of operations or liquidity.

Washington Refinery Fire

The naphtha hydrotreater unit at our Washington refinery was involved in a fire in April 2010, which fatally injured seven employees and rendered the unit inoperable. The Washington State Department of Labor & Industries (“L&I”), the U.S. Chemical Safety and Hazard Investigation Board (“CSB”) and the EPA initiated separate investigations of the incident. L&I completed its investigation in October 2010, issued citations and assessed a $2.4 million fine, which we appealed. L&I reassumed jurisdiction of the citation and affirmed the allegations in December 2010. We disagree with L&I's characterizations of operations at our Washington refinery and believe, based on available evidence and scientific reviews, that many of the agency's conclusions are mistaken. We filed an appeal of the citation in January 2011. The EPA and CSB investigations are ongoing.

17

TESORO CORPORATION

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

In July 2012, we settled all claims brought by the estates and families of the seven fatally injured employees and a third-party truck driver arising from the April 2010 incident at our Washington refinery (Donald and Peggy Zimmerman et al. v. Tesoro Corporation and Tesoro Refining and Marketing et al.).  The resolution of this matter did not have a material impact on our financial position, results of operations or liquidity.

Our business interruption insurance deductible was satisfied after we exceeded both 60 days of operational disruption and $25 million in losses primarily based on the operating plan that existed prior to the incident. We have filed business interruption insurance claims and collected $87 million in business interruption insurance recoveries in 2010 and 2011. As of June 30, 2012, certain business interruption claims remain open.

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. On the basis of existing information, we believe that the resolution of these matters, individually or in the aggregate, will not have a material adverse 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.

Legal

We are a defendant, along with other manufacturing, supply and marketing defendants, in two remaining lawsuits alleging methyl tertiary butyl ether (“MTBE”) contamination in groundwater. The defendants are being sued for having manufactured MTBE and having manufactured, supplied and distributed gasoline containing MTBE. The plaintiffs in the remaining cases, all in California, are municipalities and governmental authorities. The plaintiffs allege, in part, that the defendants are liable for manufacturing or distributing a defective product. The suits generally seek individual, unquantified compensatory and punitive damages and attorney's fees. We intend to vigorously assert our defenses against these claims. While we cannot currently estimate the amount or timing of the resolution of these matters, we have established an accrual for these matters and believe that the outcome will not have a material impact on our financial position, results of operations or liquidity.

During 2009, Chevron filed a lawsuit against us claiming they are entitled to a share of the refunds we received in 2008 from the owners of the Trans Alaska Pipeline System (“TAPS”). We received $50 million in 2008, net of contingent legal fees, for excessive intrastate rates charged by TAPS during 1997 through 2000, and the period of 2001 through June 2003. Chevron is asserting that it is entitled to a share of its portion of the refunds for retroactive price adjustments under our previous crude oil contracts with them. The trial court judge granted Chevron's motion for summary judgment and awarded them $16 million, including interest in September 2010. We disagree with the trial court and have appealed the decision to the Alaska Supreme Court, in which the proceeding is now pending. We have established an accrual for this matter and believe that the outcome will not have a material impact on our financial position, results of operations or liquidity.

Environmental

The EPA has alleged that we have violated certain Clean Air Act regulations at our Alaska, Washington, Martinez, Hawaii and Utah refineries. We are continuing discussions of the EPA’s claims with the EPA and the U.S. Department of Justice (“DOJ”). We previously received a notice of violation (“NOV”) in March 2011 from the EPA alleging violations of Title V of the Clean Air Act at our Alaska refinery. The alleged violations in the NOV arise from a 2007 state of Alaska inspection and inspections by the EPA in 2008 and 2010. We also previously received NOV’s in 2005 and 2008 alleging violations of the Clean Air Act at our Washington refinery. We are evaluating all of these allegations. The ultimate resolution of these matters could require us to incur material capital expenditures and/or civil penalties. While we cannot currently estimate the amount or timing of the resolution of these matters, and currently believe that the outcome of these matters will not have a material impact on our liquidity or financial position, the ultimate resolution could have a material impact on our interim or annual results of operations.

18

TESORO CORPORATION

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

NOTE K - STOCKHOLDERS' EQUITY

See Note L for information relating to stock-based compensation. Changes to equity during the six months ended June 30, 2012, are presented below:

	Tesoro Corporation Stockholders' Equity			Noncontrolling Interest			Total Equity
Balance at December 31, 2011	$	3,668		$	310		$	3,978
Net earnings	443			12			455
Shares issued for equity-based compensation awards	15			—			15
Excess tax benefits from stock-based compensation arrangements	3			—			3
Amortization of equity settled awards	14			—			14
Purchases of common stock	(31		)	—			(31		)
Distributions to noncontrolling interest	—			(11		)	(11		)
Balance at June 30, 2012	$	4,112		$	311		$	4,423

We issued approximately 1.0 million and 1.6 million shares primarily for stock option exercises under our equity-based compensation plans during the six months ended June 30, 2012 and twelve months ended December 31, 2011, respectively. 

During 2011, our Board of Directors approved a program designed to offset the dilutive effect of future stock-based compensation awards. We purchased approximately 1.0 million shares of common stock at a weighted average price of $24.81 per share for approximately $26 million during the six months ended June 30, 2012, to offset the impact of 2012 grants under the 2011 Long-Term Incentive Plan (“2011 Plan”).

In August 2012, our Board of Directors authorized an additional $500 million share repurchase program and the initiation of a regular quarterly cash dividend of $0.12 per share. The shares will be repurchased at management's discretion in the open market. The authorization has no time limit and may be suspended or discontinued at any time. The dividend is payable on September 14, 2012 to holders of record at the close of business on August 31, 2012.

Our Revolving Credit Agreement and senior notes each limit our ability to pay cash dividends or repurchase stock. The limitation in each of our debt agreements is based on limits on restricted payments (as defined in our debt agreements), which include dividends, stock repurchases 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 our subsidiaries ability to make certain payments and distributions. We do not believe that the limitations will restrict our ability to pay dividends or repurchase stock under our current programs.

NOTE L - STOCK-BASED COMPENSATION

Stock-based compensation expense (credit) included in our condensed statements of consolidated operations was as follows (in millions):    

	Three Months Ended						Six Months Ended
	June 30,						June 30,
	2012			2011			2012		2011
Market stock units	$	3		$	1		$	6	$	1
Performance share awards	2			1			4		1
Stock appreciation rights	(9		)	(13		)	3		22
Other stock-based awards	4			(2		)	8		11
Total Stock-Based Compensation Expense (Credit)	$	—		$	(13	)	$	21	$	35

19

TESORO CORPORATION

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

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 $1 million and $6 million expense for the three months ended June 30, 2012 and 2011, respectively, and a benefit of $7 million and $12 million for the six months ending June 30, 2012 and 2011, respectively. The income tax benefit recognized from tax deductions resulting from exercises and vestings under all of our stock-based compensation arrangements totaled $4 million and $5 million for the three months ended June 30, 2012 and 2011, respectively, and $14 million and $15 million for the six months ended June 30, 2012 and 2011, respectively.

Market Stock Units

We granted market stock units under the 2011 Plan in February 2012. These market stock units represent the right to receive a target number of shares that will vest at the end of a three-year performance period. The number of shares ultimately issued will be based on Tesoro's stock price changes over the performance period. The market stock units' potential payout can range from 50-200% of targeted award value, unless the average closing stock price at vesting has decreased more than 50% from the average closing stock price at the grant date, then no market stock units will be paid out. The fair value of each market stock unit is estimated on the grant date using a Monte Carlo simulation model. The estimated fair value of these market stock units is amortized over a three-year vesting period using the straight-line method. As of June 30, 2012, the estimated weighted average payout percentage for these awards was 94%. Total unrecognized compensation cost related to non-vested market stock units totaled $25 million as of June 30, 2012, which is expected to be recognized over a weighted average period of 2.4 years.

A summary of our market stock unit award activity, assuming a 100% payout, is set forth below (units in thousands):

	Number of Units		Weighted Average Grant-Date Fair Value		Intrinsic Value
					(In millions)
Non-vested at January 1, 2012	424		$	34.22	$	9
Granted	665		$	33.93
Forfeited	(25	)	$	34.18
Non-vested at June 30, 2012	1,064		$	34.04	$	25

Performance Share Awards

Performance Conditions

We granted performance condition performance share awards under the 2011 Plan in February 2012. The vesting percentages of these equity awards, range from 0-200%, and are tied to performance conditions over a three-year period. These performance share awards represent the right to receive a target number of shares that will vest at the end of the performance period and be issued within two and one-half months of the vesting date. The fair value of performance share awards tied to performance measures is estimated using the market price of our common stock on the grant date. The estimated fair value of these performance share awards is amortized over a three-year vesting period using the straight-line method. The value of the award ultimately paid will be based on return on capital employed, which is measured against the performance peer group.

Market Conditions

We granted market condition performance share awards under the 2011 Plan in February 2012. The vesting percentages of these equity awards, range from 0-200%, and are tied to market conditions over a three-year performance period. These performance share awards represent the right to receive a target number of shares that will vest at the end of the performance period and be issued within two and one-half months of the vesting date. The fair value of each performance share award is estimated using a Monte Carlo simulation model and is estimated at the end of each reporting period. The estimated fair value of these performance share awards is amortized over a three-year vesting period using the straight-line method. The value of the award ultimately paid will be based on relative total shareholder return, which is measured against the performance peer group and the S&P 500 Index.

20

TESORO CORPORATION

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

Total unrecognized compensation cost related to all non-vested performance share awards totaled $14 million as of June 30, 2012, which is expected to be recognized over a weighted average period of 2.3 years. As of June 30, 2012, the estimated weighted average payout percentage for these awards was approximately 60%. A summary of all performance share award activity, assuming a 100% payout, is set forth below (shares in thousands):

	Number of Shares		Weighted Average Grant-Date Fair Value
Non-vested at January 1, 2012	274		$	31.53
Granted	380		$	30.98
Forfeited	(3	)	$	31.90
Non-vested at June 30, 2012	651		$	31.20

Stock Appreciation Rights

A stock appreciation right (“SAR”) entitles an employee to receive cash in an amount equal to the excess of the fair market value of one share of common stock on the date of exercise over the grant price of the SAR. The fair value of each SAR is estimated at the end of each reporting period using the Black-Scholes option-pricing model. We have not granted any SARs since 2010. We paid cash of $9 million to settle approximately 0.7 million SARs that were exercised during the six months ended June 30, 2012. We had $49 million and $55 million recorded in accrued liabilities associated with our SARs awards at June 30, 2012 and December 31, 2011, respectively.

NOTE M - OPERATING SEGMENTS

The Company's revenues are derived from two operating segments, refining and retail. We own and operate seven petroleum refineries located in California, Washington, Alaska, Hawaii, North Dakota and Utah. These refineries 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, at wholesale through terminal facilities and other locations. Our refining segment also sells refined products to unbranded marketers and occasionally exports refined products to foreign markets. Our retail segment sells gasoline, diesel fuel and convenience store items through company-operated retail stations and branded jobber/dealers in 18 states. We do not have significant operations in foreign countries. Therefore, revenue 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. Intersegment sales from refining to retail are made at prevailing market rates. Income taxes, other income, foreign currency exchange loss, interest and financing costs, interest income, corporate depreciation and corporate general and administrative expenses are excluded from segment operating income. Identifiable assets are those used by the segments, whereas corporate assets are principally cash and other assets that are not associated with a specific operating segment.

21

TESORO CORPORATION

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

Segment information is as follows:

	Three Months Ended						Six Months Ended
	June 30,						June 30,
	2012			2011			2012			2011
Revenues	(In millions)
Refining:
Refined products	$	7,780		$	7,635		$	15,342		$	13,905
Crude oil resales and other	135			186			291			341
Retail:
Fuel (a)	1,507			1,354			2,813			2,469
Merchandise and other	63			57			118			109
Intersegment sales from Refining to Retail	(1,380		)	(1,269		)	(2,639		)	(2,335		)
Total Revenues	$	8,105		$	7,963		$	15,925		$	14,489
Segment Operating Income
Refining (b)	$	645		$	399		$	836		$	702
Retail	74			38			70			40
Total Segment Operating Income	719			437			906			742
Corporate and unallocated costs	(38		)	(18		)	(91		)	(104		)
Operating Income (c)	681			419			815			638
Interest and financing costs	(34		)	(60		)	(70		)	(103		)
Other expense, net (d)	(18		)	—			(17		)	—
Foreign currency exchange loss	(1		)	(2		)	(1		)	(1		)
Earnings Before Income Taxes	$	628		$	357		$	727		$	534
Depreciation and Amortization Expense
Refining	$	94		$	94		$	185		$	185
Retail	9			10			19			19
Corporate	6			2			8			5
Total Depreciation and Amortization Expense	$	109		$	106		$	212		$	209
Capital Expenditures
Refining	$	121		$	55		$	212		$	93
Retail	24			4			32			7
Corporate	3			4			6			5
Total Capital Expenditures	$	148		$	63		$	250		$	105

______________

(a) Federal and state motor fuel taxes on sales by our retail segment are included in both revenues and cost of sales in our condensed statements of consolidated operations. These taxes, excluding credits, totaled $112 million and $92 million for the three months ended June 30, 2012 and 2011, respectively, and $211 million and $183 million for the six months ended June 30, 2012 and 2011, respectively.

(b) Includes impairment charges related to the change in scope of a capital project at our Wilmington refinery of $48 million for the three and six months ended June 30, 2011.

(c) Includes $37 million in business interruption and property damage recoveries for the three and six months ended June 30, 2011.

(d) Includes accruals related to certain legal matters partially offset by receipts associated with the settlement of a pipeline rate proceeding for the three and six months ended June 30, 2012.

22

TESORO CORPORATION

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

	June 30,		December 31,
	2012		2011
Identifiable Assets:
Refining	$	8,143	$	8,152
Retail	733		644
Corporate	1,532		1,096
Total Assets	$	10,408	$	9,892

NOTE N - ACQUISITION

Retail Acquisition

In January 2012, we acquired 49 retail stations located primarily in Washington, Oregon, California, Nevada, Idaho, Utah and Wyoming, from SUPERVALU, Inc. We paid approximately $37 million for the assets, including inventories of approximately $3 million. We assumed the obligations under the seller's leases and other agreements arising after the closing date. SUPERVALU, Inc. retained certain pre-closing liabilities, including environmental matters. We have spent approximately $4 million to replace the dispensers at these stations. Pro forma information has not been presented for the acquisition as it is not material to our condensed consolidated financial statements.

NOTE O - CONDENSED CONSOLIDATING FINANCIAL INFORMATION

Separate condensed consolidating financial information of Tesoro Corporation (the “Parent”), subsidiary guarantors and non-guarantors are presented below. Tesoro and certain subsidiary guarantors have fully and unconditionally guaranteed our 6 1/4% Senior Notes due 2012, 6 5/8% Senior Notes due 2015, 6 1/2% Senior Notes due 2017, and 9 3/4% Senior Notes due 2019. TLLP, in which we have a 52% ownership interest, 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. 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 jointly and severally liable for Tesoro's outstanding senior notes. The information is presented using the equity method of accounting for investments in subsidiaries.

23

TESORO CORPORATION

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

Condensed Consolidating Balance Sheet as of June 30, 2012

(In millions)

	Parent		Guarantor Subsidiaries			Non-Guarantors		Eliminations			Consolidated
ASSETS
Current Assets:
Cash and cash equivalents	$	—	$	1,277		$	45	$	—		$	1,322
Receivables, less allowance for doubtful accounts	1		1,094			67		—			1,162
Inventories	—		1,504			277		—			1,781
Prepayments and other current assets	70		68			10		—			148
Total Current Assets	71		3,943			399		—			4,413
Net Property, Plant and Equipment	—		5,021			267		—			5,288
Investment in Subsidiaries	4,875		(248		)	298		(4,925		)	—
Long-Term Receivables from Affiliates	2,237		—			—		(2,237		)	—
Other Noncurrent Assets	38		668			119		(118		)	707
Total Assets	$	7,221	$	9,384		$	1,083	$	(7,280	)	$	10,408
LIABILITIES AND EQUITY
Current Liabilities:
Accounts payable and accrued liabilities	$	148	$	2,425		$	195	$	—		$	2,768
Current maturities of debt	299		3			50		—			352
Total Current Liabilities	447		2,428			245		—			3,120
Long-Term Payables to Affiliates	—		2,161			76		(2,237		)	—
Debt	1,332		18			118		(118		)	1,350
Other Noncurrent Liabilities	1,330		181			4		—			1,515
Equity-Tesoro Corporation	4,112		4,596			329		(4,925		)	4,112
Equity-Noncontrolling interest	—		—			311		—			311
Total Liabilities and Equity	$	7,221	$	9,384		$	1,083	$	(7,280	)	$	10,408

24

TESORO CORPORATION

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

Condensed Consolidating Balance Sheet as of December 31, 2011

(In millions)

	Parent		Guarantor Subsidiaries			Non-Guarantors		Eliminations			Consolidated
ASSETS
Current Assets:
Cash and cash equivalents	$	—	$	805		$	95	$	—		$	900
Receivables, less allowance for doubtful accounts	1		1,189			82		—			1,272
Inventories	—		1,416			347		—			1,763
Prepayments and other current assets	106		88			22		—			216
Total Current Assets	107		3,498			546		—			4,151
Net Property, Plant and Equipment	—		4,925			223		—			5,148
Investment in Subsidiaries	4,436		(284		)	282		(4,434		)	—
Long-Term Receivables from Affiliates	1,944		—			—		(1,944		)	—
Other Noncurrent Assets	42		548			53		(50		)	593
Total Assets	$	6,529	$	8,687		$	1,104	$	(6,428	)	$	9,892
LIABILITIES AND EQUITY
Current Liabilities:
Accounts payable and accrued liabilities	$	85	$	2,420		$	326	$	—		$	2,831
Current maturities of debt	299		2			117		—			418
Total Current Liabilities	384		2,422			443		—			3,249
Long-Term Payables to Affiliates	—		1,922			22		(1,944		)	—
Debt	1,264		19			50		(50		)	1,283
Other Noncurrent Liabilities	1,200		177			5		—			1,382
Equity-Tesoro Corporation	3,681		4,147			274		(4,434		)	3,668
Equity-Noncontrolling interest	—		—			310		—			310
Total Liabilities and Equity	$	6,529	$	8,687		$	1,104	$	(6,428	)	$	9,892

25

TESORO CORPORATION

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

Condensed Consolidating Statement of Operations and

Comprehensive Income for the Three Months EndedJune 30, 2012

(In millions)

	Parent			Guarantor Subsidiaries			Non- Guarantors			Eliminations			Consolidated
REVENUES	$	—		$	9,768		$	642		$	(2,305	)	$	8,105
Costs and expenses	3			9,103			623			(2,305		)	7,424
OPERATING INCOME (LOSS)	(3		)	665			19			—			681
Equity in earnings (loss) of subsidiaries	391			13			10			(414		)	—
Other expense	(1		)	(50		)	(2		)	—			(53		)
EARNINGS (LOSS) BEFORE INCOME TAXES	387			628			27			(414		)	628
Income tax expense (benefit) (a)	—			237			(2		)	—			235
NET EARNINGS (LOSS)	387			391			29			(414		)	393
Less net income attributable to noncontrolling interest	—			—			6			—			6
NET EARNINGS (LOSS) ATTRIBUTABLE TO TESORO CORPORATION	$	387		$	391		$	23		$	(414	)	$	387
COMPREHENSIVE INCOME (LOSS)
Total comprehensive income (loss)	$	387		$	391		$	29		$	(414	)	$	393
Less noncontrolling interest in comprehensive income	—			—			6			—			6
COMPREHENSIVE INCOME (LOSS) ATTRIBUTABLE TO TESORO CORPORATION	$	387		$	391		$	23		$	(414	)	$	387

_______________

(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 and

Comprehensive Income for the Three Months EndedJune 30, 2011

(In millions)

	Parent			Guarantor Subsidiaries			Non- Guarantors			Eliminations			Consolidated
REVENUES	$	—		$	9,964		$	960		$	(2,961	)	$	7,963
Costs and expenses	1			9,557			947			(2,961		)	7,544
OPERATING INCOME (LOSS)	(1		)	407			13			—			419
Equity in earnings (loss) of subsidiaries	224			(5		)	21			(240		)	—
Other expense	—			(58		)	(4		)	—			(62		)
EARNINGS (LOSS) BEFORE INCOME TAXES	223			344			30			(240		)	357
Income tax expense (a)	1			133			1			—			135
NET EARNINGS (LOSS)	222			211			29			(240		)	222
Less net income attributable to noncontrolling interest	—			—			4			—			4
NET EARNINGS (LOSS) ATTRIBUTABLE TO TESORO CORPORATION	$	222		$	211		$	25		$	(240	)	$	218
COMPREHENSIVE INCOME (LOSS)
Total comprehensive income (loss)	$	222		$	211		$	29		$	(240	)	$	222
Less noncontrolling interest in comprehensive income	—			—			4			—			4
COMPREHENSIVE INCOME (LOSS) ATTRIBUTABLE TO TESORO CORPORATION	$	222		$	211		$	25		$	(240	)	$	218

_______________

(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.

26

TESORO CORPORATION

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

Condensed Consolidating Statement of Operations and

Comprehensive Income for the Six Months EndedJune 30, 2012

(In millions)

	Parent			Guarantor Subsidiaries			Non- Guarantors			Eliminations			Consolidated
REVENUES	$	—		$	19,401		$	1,238		$	(4,714	)	$	15,925
Costs and expenses	5			18,609			1,210			(4,714		)	15,110
OPERATING INCOME (LOSS)	(5		)	792			28			—			815
Equity in earnings (loss) of subsidiaries	450			—			41			(491		)	—
Other expense	(2		)	(82		)	(4		)	—			(88		)
EARNINGS (LOSS) BEFORE INCOME TAXES	443			710			65			(491		)	727
Income tax expense (a)	—			272			—			—			272
NET EARNINGS (LOSS)	443			438			65			(491		)	455
Less net income attributable to noncontrolling interest	—			—			12			—			12
NET EARNINGS (LOSS) ATTRIBUTABLE TO TESORO CORPORATION	$	443		$	438		$	53		$	(491	)	$	443
COMPREHENSIVE INCOME (LOSS)
Total comprehensive income (loss)	$	443		$	438		$	65		$	(491	)	$	455
Less noncontrolling interest in comprehensive income	—			—			12			—			12
COMPREHENSIVE INCOME (LOSS) ATTRIBUTABLE TO TESORO CORPORATION	$	443		$	438		$	53		$	(491	)	$	443

_______________

(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 and

Comprehensive Income for the Six Months EndedJune 30, 2011

(In millions)

	Parent			Guarantor Subsidiaries			Non- Guarantors			Eliminations			Consolidated
REVENUES	$	—		$	18,205		$	1,648		$	(5,364	)	$	14,489
Costs and expenses	5			17,580			1,630			(5,364		)	13,851
OPERATING INCOME (LOSS)	(5		)	625			18			—			638
Equity in earnings (loss) of subsidiaries	333			(17		)	21			(337		)	—
Other expense	—			(98		)	(6		)	—			(104		)
EARNINGS (LOSS) BEFORE INCOME TAXES	328			510			33			(337		)	534
Income tax expense (benefit) (a)	(1		)	204			2			—			205
NET EARNINGS (LOSS)	329			306			31			(337		)	329
Less net income attributable to noncontrolling interest	—			—			4			—			4
NET EARNINGS (LOSS) ATTRIBUTABLE TO TESORO CORPORATION	$	329		$	306		$	27		$	(337	)	$	325
COMPREHENSIVE INCOME (LOSS)
Total comprehensive income (loss)	$	329		$	306		$	31		$	(337	)	$	329
Less noncontrolling interest in comprehensive income	—			—			4			—			4
COMPREHENSIVE INCOME (LOSS) ATTRIBUTABLE TO TESORO CORPORATION	$	329		$	306		$	27		$	(337	)	$	325

_______________

(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.

27

TESORO CORPORATION

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

Condensed Consolidating Statement of Cash Flows for the Six Months EndedJune 30, 2012

(In millions)

	Parent			Guarantor Subsidiaries			Non-Guarantors			Eliminations			Consolidated
CASH FLOWS FROM (USED IN) OPERATING ACTIVITIES
Net cash from (used in) operating activities	$	9		$	717		$	(2	)	$	—		$	724
CASH FLOWS FROM (USED IN) INVESTING ACTIVITIES
Capital expenditures	—			(234		)	(9		)	—			(243		)
Acquisitions	—			(38		)	—			—			(38		)
Proceeds from asset sales	—			3			—						3
Intercompany notes, net	(65		)	—			—			65			—
Net cash from (used in) investing activities	(65		)	(269		)	(9		)	65			(278		)
CASH FLOWS FROM (USED IN) FINANCING ACTIVITIES
Borrowings under revolving credit agreements	—			—			185			—			185
Repayments on revolving credit agreements	—			—			(184		)	—			(184		)
Repayments of debt	—			(1		)	—						(1		)
Proceeds from stock options exercised	14			—			—			—			14
Excess tax benefits from stock-based compensation arrangements	—			4			—			—			4
Distributions to noncontrolling interest	—			—			(11		)	—			(11		)
Purchases of common stock	(31		)	—			—			—			(31		)
Net intercompany borrowings (repayments)	—			15			50			(65		)	—
Borrowings from general partner	68			—			(68		)	—			—
Distributions to TLLP unitholders and general partner	5			6			(11		)	—			—
Net cash from (used in) financing activities	56			24			(39		)	(65		)	(24		)
INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	—			472			(50		)	—			422
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	—			805			95			—			900
CASH AND CASH EQUIVALENTS, END OF PERIOD	$	—		$	1,277		$	45		$	—		$	1,322

28

TESORO CORPORATION

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

Condensed Consolidating Statement of Cash Flows for the Six Months EndedJune 30, 2011

(In millions)

	Parent			Guarantor Subsidiaries			Non-Guarantors			Eliminations			Consolidated
CASH FLOWS FROM (USED IN) OPERATING ACTIVITIES
Net cash from (used in) operating activities	$	31		$	162		$	(104	)	$	—		$	89
CASH FLOWS FROM (USED IN) INVESTING ACTIVITIES
Capital expenditures	—			(111		)	(1		)	—			(112		)
Proceeds from asset sales	—			1			—			—			1
Intercompany notes, net	59			—			—			(59		)	—
Net cash from (used in) investing activities	59			(110		)	(1		)	(59		)	(111		)
CASH FLOWS FROM (USED IN) FINANCING ACTIVITIES
Borrowings under revolving credit agreements	—			—			115			—			115
Repayments on revolving credit agreements	—			—			(160		)	—			(160		)
Repayments of debt	(243		)	(1		)	—			—			(244		)
Proceeds from stock options exercised	7			—			—			—			7
Purchases of common stock	(7		)	—			—			—			(7		)
Excess tax benefits from stock-based compensation arrangements	—			7			—			—			7
Proceeds from issuance of common units Tesoro Logistics LP	—			—			288			—			288
Net intercompany borrowings (repayments)	—			(265		)	206			59			—
Borrowings from general partner	50			—			(50		)	—			—
Distributions to TLLP unitholders and general partner	126			157			(283		)	—			—
Financing costs and other	(23		)	—			(2		)	—			(25		)
Net cash from (used in) financing activities	(90		)	(102		)	114			59			(19		)
INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	—			(50		)	9			—			(41		)
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	—			612			36			—			648
CASH AND CASH EQUIVALENTS, END OF PERIOD	$	—		$	562		$	45		$	—		$	607

29

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” on page 49 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, 2011.

BUSINESS STRATEGY AND OVERVIEW

Strategy and Goals

Our vision is to be the premier low-cost supplier of transportation fuels in the refining and marketing business within our markets, providing value for our customers, while delivering industry leading returns for our shareholders and conducting ourselves responsibly in the communities in which we operate. To achieve these goals we are pursuing the following strategic priorities:

• improve operational efficiency and effectiveness by focusing on safety and reliability, system improvements and cost leadership;

• drive commercial excellence by strengthening our supply and trading activities to provide additional value to the business;

• strengthen our financial position by exercising capital discipline and focusing on improving our liquidity; and

• capture value-driven growth through a focus on our logistics assets and growing our marketing business.

Our goals were focused on these strategic priorities and we accomplished the following in the first half of 2012:

	Operational Efficiency & Effectiveness	Commercial Excellence	Financial Discipline	Value Driven Growth
Decreased manufacturing costs per barrel by approximately 5% compared to the first half of 2011	l
Leveraged our logistics operations to strategically source advantaged crude oil and place refined products		l
Completed planned turnaround activity at our Martinez, Hawaii and Alaska refineries and made significant progress on our large capital refinery projects	l			l
Purchased shares of common stock to offset the dilutive effects of new stock-based compensation awards granted in 2012			l
Amended the Tesoro Logistics LP Revolving Credit Facility and increased the capacity up to $300 million to support logistics growth			l	l
Strengthened refining and marketing integration with the acquisition of 49 retail stations and the successful transition of 165 leased retail stations				l
Completed the sale of the Martinez Crude Oil Marine Terminal to TLLP				l

30

Tesoro Logistics LP

As part of our business strategy, we formed Tesoro Logistics LP (“TLLP”) to own, operate, develop and acquire logistics assets to gather crude oil and distribute, transport and store crude oil and refined products. Tesoro Logistics GP, LLC (“TLGP”), a 100% consolidated subsidiary, serves as the general partner of TLLP. As of June 30, 2012, TLLP's assets consist of a crude oil gathering system in the Bakken Shale/Williston Basin area of North Dakota and Montana, eight refined products terminals in the midwestern and western United States, one crude oil marine terminal in California, a crude oil and refined products storage facility and five related short-haul pipelines in Utah. We held an approximate 52% interest in TLLP, including the interest of the general partner, as of June 30, 2012.

Effective April 1, 2012, Tesoro entered into a transaction (the “Martinez Terminal Sale”) to sell to TLLP the Martinez Crude Oil Marine Terminal (the “Martinez Terminal”) and associated pipelines for $75 million, comprised of $67.5 million in cash financed with borrowings under the TLLP Revolving Credit Facility and the issuance of equity with a combined fair value of $7.5 million. The Martinez Terminal consists of a single-berth dock, five crude oil storage tanks with a combined storage capacity of 425,000 barrels, two firewater tanks with 48,000 barrels of shell capacity and related pipelines that receive crude oil from third-party marine vessels for delivery to our Martinez refinery and a third-party terminal. Total throughput capacity for the Martinez Terminal is estimated to be approximately 145 thousand barrels per day (“Mbpd”).

TLLP amended its senior secured revolving credit agreement (“TLLP Revolving Credit Facility”) effective March 30, 2012. Concurrent with the execution of the amendment, and pursuant to the terms of the original agreement, TLLP exercised its option to increase the total loan availability under the TLLP Credit Agreement from $150 million to an aggregate of $300 million. The amendment allows TLLP to request that the availability be increased up to an aggregate of $450 million, subject to receiving increased commitments from the lenders, compared to the original agreement, which allowed an aggregate capacity of $300 million. On April 2, 2012, TLLP borrowed and distributed to us $67.5 million from the TLLP Revolving Credit Facility, for the Martinez Terminal Sale discussed above. The TLLP Revolving Credit Facility is non-recourse to Tesoro, except for TLGP, and is guaranteed by all of TLLP's subsidiaries and secured by substantially all of TLLP's assets. For additional information regarding our credit facilities, see “Capital Resources and Liquidity.”

Long Beach Marine Terminal and Los Angeles Short-haul Pipelines

We intend to offer the Long Beach Marine terminal and Los Angeles short-haul pipelines to TLLP and plan to complete the transaction during the third quarter of 2012. These assets, located near our Wilmington refinery, consist of a two-vessel berth dock, leased from the City of Long Beach, six storage tanks with combined capacity of 235,000 barrels and six related pipelines with 70,000 bpd throughput connecting the marine terminal, our Wilmington refinery and other third party facilities.

Unit Train Unloading Facility

We intend to offer the Anacortes, Washington unit train unloading facility to TLLP in the fourth quarter of 2012. The project includes unloading facilities for dedicated trains of rail cars (“unit trains”) and is expected to deliver up to 50,000 bpd of Bakken crude oil to our Washington refinery. The construction of the facility is expected to be completed in September 2012.

Completion of North Dakota Refinery Expansion

We recently completed a project to expand the crude oil throughput capacity at our Mandan, North Dakota refinery from 58 to 68 Mbpd. The expansion allows the refinery to process additional crude oil from the nearby Bakken Shale/Williston Basin area delivered via the TLLP High Plains System (the “High Plains System”).

Labor Negotiations

In June 2012, we completed the negotiation of the collective bargaining agreements covering approximately 1,300 full-time represented employees at the six of our seven refineries covered by collective bargaining agreements. The agreements for approximately 1,060 of the employees will expire in the first quarter of 2015 . The agreements covering the remaining employees will expire in the second quarter of 2015. We believe that the contracts ratified at these refineries are fair, competitive and consistent with other national agreements accepted by the United Steelworkers union. 

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Hawaii Operations

In January 2012, we announced that we intend to sell our Hawaii operations as part our strategy to focus on the Mid-Continent and West Coast markets. The assets for sale include the 94 Mbpd Kapolei refinery, 31 retail stations and the associated logistical assets. As of June 30, 2012, the net working capital of the Hawaii operations was approximately $70 million. The estimated market value of the inventory exceeded the carrying value by more than $240 million at June 30, 2012.

Industry Overview

Our profitability is heavily influenced by the cost of crude oil and the aggregate value of the products we make from that crude oil and is affected by changes in economic conditions. Product values and crude oil costs are set by the market and are outside of the control of independent refiners.

West Coast Average Key Commodity Prices and Differentials

(Dollars per barrel)

Crude Oil and Product Price Analysis

The nationwide unemployment rate was down 0.9% to 8.2% at the end of the second quarter of 2012 compared to the end of the second quarter of 2011. In California, a key market area for Tesoro, the state's unemployment rate dropped to 10.7% at the end of the second quarter of 2012, down from 11.9% at the end of the second quarter of 2011. The drop in unemployment rate, strong retail margins and unplanned refinery outages contributed to the improved market conditions on the U.S West Coast.

Emerging markets, primarily in Latin America, have provided an export opportunity for U.S. light products, particularly diesel exports. Exports to these emerging markets continue to provide an outlet for U.S. refining capacity, which has supported margins during this time.

Significant turnaround activity and downtime on the U.S. West Coast reduced production during the first half of 2012. The resulting low gasoline inventories supported U.S. West Coast benchmark gasoline margins, which rose to nearly $18 per barrel in the second quarter of 2012 compared to about $14 per barrel in the second quarter of 2011. However, overall global economic activity has slowed during the 2012 quarter leading to lower margins for distillate products. Average U.S. West Coast benchmark diesel fuel margins decreased about 20% compared to the second quarter of 2011.

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Mid-Continent Average Key Commodity Prices and Differentials

(Dollars per barrel)

The price differential between Mid-Continent crude oil and waterborne crude oil remained high during the second quarter of 2012, contributing to strong refining margins in the Mid-Continent region. The West Texas Intermediate (“WTI”) discount to Brent remained flat during the second quarter of 2012, compared to the second quarter of 2011. Also contributing to strong refining margins in the Mid-Continent and Pacific Northwest regions, were advantaged price differentials for Bakken and Canadian crude oils in the second quarter of 2012. During the second quarter of 2012, the Bakken to WTI discount averaged $6 per barrel, compared to a $6 per barrel premium during the second quarter of 2011. Our North Dakota refinery currently runs 100% Bakken crude oil. The Canadian Light Sweet to WTI discount averaged $8 per barrel during the second quarter of 2012, compared to a $4 per barrel premium during the second quarter of 2011. Our Washington refinery runs a significant amount of Canadian Light Sweet crude oil.  

Product Supply and Demand Factors

There are long-term factors, in addition to current market conditions, that may impact the supply and demand of refined products in the U.S. including:

• world crude oil prices;

• increased federal fuel efficiency standards for motor vehicles;

• increased volumes of renewable fuels, mandated by the federal Clean Air Act;

• various regulations of greenhouse gas emissions from stationary and mobile sources by the U.S. Environmental Protection Agency (“EPA”) pursuant to the Federal Clean Air Act and California statute;

• potential enactment of federal climate change legislation; and

• possible promulgation of national regulations relative to gasoline composition and ozone standards under the federal Clean Air Act.

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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. Revenue and income generated by TLLP was not material to our consolidated results of operations.

Summary

Our net earnings were $387 million ($2.75 per diluted share) for the three months ended June 30, 2012 (“2012 Quarter”), compared with net earnings of $218 million ($1.52 per diluted share) for the three months ended June 30, 2011 (“2011 Quarter”). The increase in net earnings of $1.23 per diluted share during the 2012 Quarter was primarily due to the following:

• an increase in gross refining margins in the Mid-Continent and Pacific Northwest regions of $121 million and $60 million, respectively, driven by feedstock advantages;

• high utilization in the California and Mid-Continent regions of 102% and 97% respectively, which allowed us to capture attractive market conditions;

• a $48 million impairment charge in the 2011 Quarter related to a change in scope of a capital project at our Wilmington refinery;

• a $36 million increase in income from retail operations as compared to the 2011 Quarter as a result of strong retail margins and increased refining and marketing integration; and

• a $26 million reduction in interest and financing costs primarily due to charges in the 2011 Quarter to write-off the remaining unamortized discount associated with the early redemption of our Junior Subordinated Notes and premiums paid in connection with the repurchase of a portion of our 6 1/4% Senior Notes.

The increase in net earnings during the 2012 Quarter relative to the 2011 Quarter was partially offset by net expense of $18 million related to legal matters.

For the year-to-date periods, our net earnings were $443 million ($3.14 per diluted share) for the six months ended June 30, 2012 (“2012 Period”), compared to net earnings of $325 million ($2.26 per diluted share) for the six months ended June 30, 2011 (“2011 Period”). The increase in net earnings of $0.88 per diluted share during the 2012 Period was primarily due to the following:

• an increase in gross refining margins in the Mid-Continent and Pacific Northwest regions of $170 million and $80 million, respectively, driven by feedstock advantages;

• a $48 million impairment charge in the 2011 Period related to a change in scope of a capital project at our Wilmington refinery;

• a $33 million reduction in interest and financing costs primarily due to charges in the 2011 Period to write-off the remaining unamortized discount associated with the early redemption of our Junior Subordinated Notes and premiums paid in connection with the repurchase of a portion of our 6 1/4% Senior Notes; and

• an $11 million decrease in incentive and stock-based compensation expense, primarily resulting from smaller increases in Tesoro stock prices during the 2012 Period as compared to the 2011 Period.

The increase in net earnings during the 2012 Period relative to the 2011 Period was partially offset by the following:

• lower throughputs in the Pacific Northwest, Mid-Pacific and California regions as a result of planned turnarounds at our Alaska, Hawaii and Martinez refineries;

• $37 million of property and business interruption insurance recoveries related to the Washington refinery incident collected in the 2011 Period; and

• net expense of $18 million related to legal matters.

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Refining Segment

	Three Months Ended						Six Months Ended
	June 30,						June 30,
	2012			2011			2012			2011
	(Dollars in millions except per barrel amounts)
Revenues
Refined products (a)	$	7,780		$	7,635		$	15,342		$	13,905
Crude oil resales and other (b)	135			186			291			341
Total Revenues	$	7,915		$	7,821		$	15,633		$	14,246
Throughput (thousand barrels per day)
Heavy crude (c)	175			160			159			173
Light crude	365			382			361			360
Other feedstocks	39			36			34			37
Total Throughput	579			578			554			570
% Heavy Crude Oil of Total Refining Throughput (c)	30		%	28		%	29		%	30		%
Yield (thousand barrels per day)
Gasoline and gasoline blendstocks	296			276			275			283
Jet fuel	74			77			78			78
Diesel fuel	129			131			117			128
Heavy oils, residual products, internally produced fuel and other	113			124			114			112
Total Yield	612			608			584			601
Gross refining margin ($/throughput barrel) (d)	$	20.32		$	16.61		$	16.42		$	15.49
Manufacturing Cost before Depreciation and Amortization Expense ($/throughput barrel) (d)	$	4.83		$	5.13		$	4.89		$	5.17

________________

(a) Refined products sales includes intersegment sales to our retail segment at prices, which approximate market of $1.4 billion and $1.3 billion for the three months ended June 30, 2012 and 2011, respectively, and $2.6 billion and $2.3 billion for the six months ended June 30, 2012 and 2011, respectively.

(b) Crude oil resales and other includes third-party revenues earned by TLLP.

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

(d) Management uses gross refining margin per barrel to evaluate performance and compare profitability to other companies in the industry. There are a variety of ways to calculate gross refining margin per barrel; different companies may calculate it in different ways. We calculate gross refining margin per barrel by dividing gross refining margin (revenues less costs of feedstocks, purchased refined products, transportation and distribution) by total refining throughput. Management uses manufacturing costs per barrel to evaluate the efficiency of refining operations. There are a variety of ways to calculate manufacturing costs per barrel; different companies may calculate it in different ways. We calculate manufacturing costs per barrel 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. These financial measures should not be considered alternatives to segment operating income, revenues, costs of sales and operating expenses or any other measure of financial performance presented in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”).

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Refining Segment

	Three Months Ended				Six Months Ended
	June 30,				June 30,
	2012		2011		2012		2011
	(Dollars in millions except per barrel amounts)
Segment Operating Income
Gross refining margin (e)	$	1,071	$	873	$	1,656	$	1,597
Expenses
Manufacturing costs	255		269		494		533
Other operating expenses	63		51		115		107
Selling, general and administrative expenses	10		8		19		16
Depreciation and amortization expense (f)	94		94		185		185
Loss on asset disposals and impairments	4		52		7		54
Segment Operating Income	$	645	$	399	$	836	$	702
Refined Product Sales (thousand barrels per day) (g)
Gasoline and gasoline blendstocks	358		344		350		334
Jet fuel	91		89		93		87
Diesel fuel	153		139		142		135
Heavy oils, residual products and other	82		85		85		80
Total Refined Product Sales	684		657		670		636
Refined Product Sales Margin ($/barrel) (g)
Average sales price	$	125.22	$	128.67	$	126.14	$	121.29
Average costs of sales	110.96		117.01		114.29		108.82
Refined Product Sales Margin	$	14.26	$	11.66	$	11.85	$	12.47

_______________

(e) Consolidated gross refining margin combines gross refining margin for each of our regions adjusted for other amounts not directly attributable to a specific region. Other amounts resulted in an increase of $3 million and $5 million for the three months ended June 30, 2012 and 2011, respectively, and $2 million and $10 million for the six months ended June 30, 2012 and 2011, respectively. Gross refining margin includes the effect of intersegment sales to the retail segment at prices, which approximate market. Gross refining margin approximates total refining throughput multiplied by the gross refining margin per barrel.

(f) Includes manufacturing depreciation and amortization expense per throughput barrel of approximately $1.71 and $1.70 for the three months ended June 30, 2012 and 2011, respectively, and $1.75 and $1.71 for the six months ended June 30, 2012 and 2011, respectively.

(g) Sources of total refined product sales include refined products manufactured at our refineries and refined products purchased from third-parties. Total refined product sales margins include margins on sales of manufactured and purchased refined products.

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Refining Data by Region

	Three Months Ended				Six Months Ended
	June 30,				June 30,
	2012		2011		2012		2011
	(Dollars in millions except per barrel amounts)
California (Martinez and Wilmington)
Refining throughput (thousand barrels per day) (h)	268		227		229		238
Gross refining margin	$	322	$	316	$	460	$	688
Gross refining margin ($/throughput barrel) (d)	$	13.20	$	15.25	$	11.04	$	15.98
Manufacturing cost before depreciation and amortization expense (d) ($/throughput barrel)	$	5.70	$	7.72	$	6.38	$	7.18
Pacific Northwest (Washington and Alaska)
Refining throughput (thousand barrels per day) (h)	143		168		149		152
Gross refining margin	$	280	$	220	$	463	$	383
Gross refining margin ($/throughput barrel) (d)	$	21.64	$	14.39	$	17.12	$	13.95
Manufacturing cost before depreciation and amortization expense (d) ($/throughput barrel)	$	4.02	$	3.04	$	3.92	$	3.50
Mid-Pacific (Hawaii)
Refining throughput (thousand barrels per day) (h)	56		68		61		68
Gross refining margin	$	73	$	60	$	86	$	41
Gross refining margin ($/throughput barrel) (d)	$	14.43	$	9.76	$	7.70	$	3.33
Manufacturing cost before depreciation and amortization expense (d) ($/throughput barrel)	$	4.46	$	3.97	$	3.94	$	4.33
Mid-Continent (North Dakota and Utah)
Refining throughput (thousand barrels per day)	112		115		115		112
Gross refining margin	$	393	$	272	$	645	$	475
Gross refining margin ($/throughput barrel) (d)	$	38.54	$	26.07	$	30.83	$	23.51
Manufacturing cost before depreciation and amortization expense (d) ($/throughput barrel)	$	3.95	$	3.73	$	3.71	$	3.69

____________________

(h) We experienced reduced throughput due to scheduled turnarounds at our Martinez refinery during the 2012 first quarter and 2011 second quarter, and our Alaska and Hawaii refineries during the 2012 second quarter.

Three Months EndedJune 30, 2012 Compared with Three Months EndedJune 30, 2011

Overview. Operating income for our refining segment increased by $246 million, or 62%, to $645 million during the 2012 Quarter as compared to the 2011 Quarter. The increase is primarily due to strong operating performance, improved market conditions and advantaged crude oil discounts during the 2012 Quarter.

Gross Refining Margins. Our gross refining margin per barrel increased by $3.71 per barrel, or 22%, to $20.32 per barrel in the 2012 Quarter as compared to the 2011 Quarter, driven by improved industry gasoline margins and advantaged crude oil cost relative to industry benchmarks. Industry gasoline margins on the U.S. West Coast and the Pacific Northwest increased approximately 26% and 48%, respectively, during the 2012 Quarter as compared to the 2011 Quarter due to higher demand. This was partially offset by distillate margins on the U.S. West Coast that decreased approximately 20% as compared to the 2011 Quarter as a result of seasonally high inventory early in the 2012 Quarter and lower diesel demand.

Mid-Continent crude oil logistic constraints continued to elevate the price spread between WTI as compared to waterborne crude oil benchmarks, such as Brent, during the 2012 Quarter. These constraints have decreased the relative crude oil costs for our Mid-Continent refineries, which increased gross refining margin per barrel by 48% and gross refining margin by $121 million during the 2012 Quarter as compared to the 2011 Quarter. Pipeline constraints also decreased prices for Canadian crude oil, primarily processed in the Pacific Northwest, during the 2012 Quarter.

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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. We also use non-trading derivative instruments to manage price risks associated with inventories above or below our target levels. Gains or losses associated with our commodity derivative instruments are included in gross refining margin. Our gain totaled $56 million and $86 million during the 2012 Quarter and 2011 Quarter, respectively, due to price movements of crude oil and refined products.

Refining Throughput. Total refining throughput remained consistent, increasing by 1 Mbpd to 579 Mbpd, during the 2012 Quarter as compared to the 2011 Quarter. The reduced rates at our Alaska and Hawaii refineries due to scheduled turnarounds in the 2012 Quarter were offset by higher rates at the Martinez refinery in the 2012 Quarter due to a scheduled turnaround during the 2011 Quarter.

Refined Products Sales. Revenues from sales of refined products increased $145 million, or 2% to $7.8 billion in the 2012 Quarter as compared to the 2011 Quarter, primarily due to increased refined product sales volumes. Total refined product sales increased by 27 Mbpd, or 4%, to 684 Mbpd in the 2012 Quarter as compared to the 2011 Quarter. Refined product sales volumes were impacted by increased demand for diesel fuel and gasoline and benefited from an increase in refining and marketing integration driven by the transition of additional retail sites during 2012. This was partially offset by the decrease in average product sales prices of $3.45 per barrel, or 3%, to $125.22 per barrel in the 2012 Quarter as compared to the 2011 Quarter, as declining crude oil prices depressed product prices.

Costs of Sales and Expenses. Our average costs of sales decreased by $6.05 per barrel, or 5%, to $110.96 per barrel during the 2012 Quarter as compared to the 2011 Quarter, reflecting lower crude oil prices. Manufacturing and other operating expenses decreased by $2 million to $318 million in the 2012 Quarter as compared to the 2011 Quarter, as a result of lower energy costs, primarily natural gas. The decrease was partially offset by property insurance recoveries recorded during the 2011 Quarter of $5 million related to the 2010 Washington refinery incident. Additionally, the loss on asset disposals and impairments in the 2011 Quarter primarily relates to a change in scope of a capital project at our Wilmington refinery, which resulted in a write-down to fair value of equipment of $48 million.

Six Months EndedJune 30, 2012 Compared with Six Months EndedJune 30, 2011

Overview. Operating income for our refining segment increased by $134 million to $836 million during the 2012 Period as compared to the 2011 Period. The increase is primarily due to increased gross refining margins driven by feedstock advantages from crude oil discounts and a strong margin environment during the 2012 Period.

Gross Refining Margins. Our gross refining margin per barrel increased by $0.93 per barrel, or 6%, to $16.42 per barrel in the 2012 Period as compared to the 2011 Period, reflecting strong industry margins in the Mid-Continent and Pacific Northwest markets and advantaged crude oil cost relative to industry benchmarks. Mid-Continent crude oil logistic constraints continued to support the price spread between WTI and waterborne crude oil benchmarks. This decreased the crude oil costs for our Mid-Continent and Pacific Northwest refineries and contributed to strong refining margins for these regions. The significantly higher gross refining margin per barrel positively impacted total Mid-Continent and Pacific Northwest gross refining margins by $170 million and $80 million, respectively during the 2012 Period as compared to the 2011 Period.

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. We also use non-trading derivative instruments to manage price risks associated with inventories above or below our target levels. Gains or losses associated with our derivative instruments are included in gross refining margin. Our gains totaled $35 million during both the 2012 Period and 2011 Period.

Refining Throughput. Total refining throughput decreased 16 Mbpd, or 3%, to 554 Mbpd during the 2012 Period as compared to the 2011 Period due to scheduled turnarounds at our Alaska, Hawaii and Martinez refineries in the 2012 Period, partially offset by a scheduled turnaround at the Martinez refinery in the 2011 Period.

Refined Products Sales. Revenues from sales of refined products increased $1.4 billion to $15.3 billion in the 2012 Period as compared to the 2011 Period, primarily due to higher average refined product sales prices and increased refined product sales volumes. Our average product sales price increased $4.85 per barrel, or 4%, to $126.14 per barrel in the 2012 Period as compared to the 2011 Period, as higher crude oil prices put upward pressure on product prices. Total refined product sales increased by 34 Mbpd, or 5%, to 670 Mbpd in the 2012 Period as compared to the 2011 Period. Refined product sales volumes were impacted by increased demand for diesel fuel and gasoline and additional branded marketing supply agreements.

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Costs of Sales and Expenses. Our average costs of sales increased by $5.47 per barrel, or 5%, to $114.29 per barrel during the 2012 Period as compared to the 2011 Period, reflecting higher crude oil prices. Manufacturing and other operating expenses decreased by $31 million, or 5%, to $609 million in the 2012 Period as compared to the 2011 Period related to lower energy costs, primarily natural gas, and lower throughput volumes. The reduction was partially offset by property insurance recoveries recorded during the 2011 Quarter of $5 million related to the 2010 Washington refinery incident. The loss on asset disposals and impairments in the 2011 Period primarily relates to a change in scope of a capital project at our Wilmington refinery, which resulted in a write-down to fair value of equipment of $48 million.

Retail Segment

	Three Months Ended						Six Months Ended
	June 30,						June 30,
	2012			2011			2012			2011
	(Dollars in millions except per gallon amounts)
Revenues
Fuel	$	1,507		$	1,354		$	2,813		$	2,469
Merchandise and other	63			57			118			109
Total Revenues	$	1,570		$	1,411		$	2,931		$	2,578
Fuel Sales (millions of gallons)	419			379			798			734
Fuel Margin ($/gallon) (a)	$	0.31		$	0.23		$	0.22		$	0.18
Merchandise Margin	$	15		$	13		$	27		$	25
Merchandise Margin (percent of revenues)	28		%	25		%	26		%	26		%
Average Number of Stations (during the period)
Company-operated (b)	493			377			453			378
Branded jobber/dealer	792			808			793			757
Total Average Retail Stations	1,285			1,185			1,246			1,135
Segment Operating Income
Gross Margins
Fuel (a)	$	127		$	85		$	174		$	134
Merchandise and other non-fuel	23			20			42			38
Total Gross Margins	150			105			216			172
Expenses
Operating expenses	61			51			115			102
Selling, general and administrative expenses	4			4			8			8
Depreciation and amortization expense	9			10			19			19
Loss on asset disposals and impairments	2			2			4			3
Segment Operating Income	$	74		$	38		$	70		$	40

_________

(a) Management uses fuel margin per gallon to compare profitability 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 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 segment operating income and revenues 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 at prices, which approximate market.

(b) Reflects the acquisition of 49 stations from SUPERVALU, Inc. during the 2012 first quarter and the transition of 165 retail stations from Thrifty Oil Co. during the 2012 second quarter.

Three Months EndedJune 30, 2012 Compared with Three Months EndedJune 30, 2011

Operating Income. Operating income for our retail segment increased $36 million, or 95%, to $74 million during the 2012 Quarter as compared to the 2011 Quarter. Total gross margin increased $45 million, or 43%, to $150 million during the 2012 Quarter as compared to the 2011 Quarter. Retail fuel margin per gallon increased 35% to $0.31 per gallon during the 2012 Quarter causing fuel gross margins to increase $42 million from the 2011 Quarter. During the 2012 Quarter, strong retail margins positively impacted operating income. Additionally, fuel sales volumes increased 40 million gallons, or 11%, during the 2012 Quarter as compared to the 2011 Quarter reflecting higher volumes as a result of higher average station count from the acquisition and transition of additional retail stations during 2012. Merchandise and other non-fuel gross margin also increased to $23 million during the 2012 Quarter compared to $20 million during the 2011 Quarter due to the higher average station count.

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Fuel sales revenues increased $153 million, or 11%, to $1.5 billion in the 2012 Quarter as compared to $1.4 billion in the 2011 Quarter, reflecting increased fuel sales volumes driven primarily by higher average station count during the 2012 Quarter. Operating expenses increased $10 million, or 20%, to $61 million in the 2012 Quarter as compared to $51 million in the 2011 Quarter. The increase is a result of expenses incurred to operate additional stations acquired and transitioned during 2012. Our other expenses remained relatively consistent as compared to the 2011 Quarter.

Six Months EndedJune 30, 2012 Compared with Six Months EndedJune 30, 2011

Operating Income. Operating income for our retail segment increased $30 million, or 75%, to $70 million during the 2012 Period as compared to the 2011 Period. Total gross margin increased $44 million, or 26%, to $216 million during the 2012 Period as compared to the 2011 Period. Retail fuel margin per gallon increased 22% to $0.22 per gallon during the 2012 Period leading fuel gross margins to increase $40 million from the 2011 Period. During the 2012 Period, strong retail margins positively impacted operating income. Additionally, fuel sales volumes increased 64 million gallons, or 9%, during the 2012 Quarter as compared to the 2011 Period reflecting higher volumes as a result of higher average station count from the acquisition and transition of additional retail stations during the 2012 Period. Merchandise and other non-fuel gross margin also increased to $42 million during the 2012 Period compared to $38 million during the 2011 Period due to the higher average station count.

Fuel sales revenues increased $344 million, or 14%, to $2.8 billion in the 2012 Period as compared to $2.5 billion in the 2011 Period, reflecting higher average sales prices and increased fuel sales volumes as a result of higher average station count during the 2012 Period. Operating expenses increased $13 million, or 13%, to $115 million in the 2012 Period as compared to $102 million in the 2011 Period. The increase is a result of expenses incurred to operate additional stations acquired and transitioned during 2012. Our other expenses remained relatively consistent compared to the 2011 Period.

Consolidated Results of Operations

Selling, General and Administrative Expenses. Our selling, general and administrative expenses increased to $47 million in the 2012 Quarter. Lower stock-based compensation credits of $13 million in the 2012 Quarter related to adjusting certain of our awards to fair value was the primary cause of the $20 million, or 74% increase from the 2011 Quarter. Our stock appreciation rights are adjusted to fair value at the end of each reporting period using a Black-Scholes model where stock price is a significant assumption. Our stock price decreased 7% during the 2012 Quarter, as compared to a 15% decrease during the 2011 Quarter.

Our selling, general and administrative expenses decreased$13 million, or 11% to $109 million in the 2012 Period from $122 million in the 2011 Period. The decrease was primarily attributable to the lower stock-based compensation expense recorded for our stock appreciation rights, which decreased by $19 million. Our stock appreciation rights are adjusted to fair value at the end of each reporting period using a Black-Scholes model where stock price is a significant assumption. Our stock price increased only 7% during the 2012 Period compared to 24% during the 2011 Period.

Interest and Financing Costs. Interest and financing costs decreased$26 million, or 43%, to $34 million in the 2012 Quarter from $60 million during the 2011 Quarter. The decrease reflects a $19 million charge in the 2011 Quarter associated with the write-off of the unamortized discount on the Junior Subordinated Notes that were redeemed during the 2011 Quarter and premiums paid related to the early repurchase of a portion our 6 1/4% Senior Notes. Additionally, interest expense decreased as a result of the overall reduction in debt outstanding in the 2012 Quarter due to the early redemption of our Junior Subordinated Notes and repurchase of a portion of our 6 1/4% Senior Notes and 6 1/2% Senior Notes during 2011.

Interest and financing costs decreased $33 million, or 32%, to $70 million in the 2012 Period from $103 million during the 2011 Period. The decrease reflects a $19 million charge in the 2011 Period associated with the write-off of the unamortized discount on the Junior Subordinated Notes that were redeemed during the 2011 Period and premiums paid related to the early repurchase of a portion our 6 1/4% Senior Notes. Additionally, interest expense decreased as a result of the overall reduction in debt outstanding in the 2012 Period due to the early redemption of our Junior Subordinated Notes and repurchase of a portion of our 6 1/4% Senior Notes and 6 1/2% Senior Notes during 2011.

Other Expense, Net. Other expense, net totaled $18 million in the 2012 Quarter and $17 million in the 2012 Period and includes accruals related to certain legal matters partially offset by receipts associated with the settlement of a pipeline rate proceeding.

Income Tax Provision. Our income tax expense totaled $235 million in the 2012 Quarter versus $135 million in the 2011 Quarter. In the 2012 Period, the income tax expense totaled $272 million versus $205 million in the 2011 Period. The combined federal and state effective income tax rate was 37% and 38% during the 2012 Period and the 2011 Period, respectively.

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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” on page 49 for further information related to risks and other factors. Future capital expenditures, as well as borrowings under our credit agreement and other sources of capital, may be affected by these conditions.

Credit Facilities Overview

Our primary sources of liquidity have been cash flows from operations and borrowing availability under revolving lines of credit. We ended the second quarter of 2012 with $1.3 billion of cash and cash equivalents, no borrowings under the Tesoro Corporation Revolving Credit Facility, $50 million in borrowings under the Tesoro Panama Company S.A. (“TPSA”) Revolving Credit Facility, and $118 million in borrowings under the TLLP Revolving Credit Facility. We believe available capital resources will be adequate to meet our capital expenditure, working capital and debt service requirements. We remain focused on strengthening our balance sheet, and anticipate retiring the remaining $299 million of 6 1/4% Senior Notes in 2012. As of June 30, 2012, we had available capacity under our credit agreements as follows (in millions):

	Total Capacity		Amount Borrowed as of June 30, 2012		Outstanding Letters of Credit		Available Capacity
Tesoro Corporation Revolving Credit Facility (a)	$	1,850	$	—	$	904	$	946
TPSA Revolving Credit Facility	500		50		—		450
TLLP Revolving Credit Facility	300		118		—		182
Letter of Credit Facilities	896		—		541		355
Total credit agreements	$	3,546	$	168	$	1,445	$	1,933

_______________

(a)Borrowing base is the lesser of the amount of the periodically adjusted borrowing base or the agreement’s total capacity.

As of June 30, 2012, our credit facilities were subject to the following expenses and fees:

Credit Facility	30 day Eurodollar (LIBOR) Rate	Eurodollar Margin	Base Rate	Base Rate Margin	Commitment Fee (unused portion)
Tesoro Corporation Revolving Credit Facility ($1.85 billion) (b)	0.25%	1.75%	3.25%	0.75%	0.375%
TPSA Revolving Credit Facility ($500 million) (b)	0.25%	2.75%	3.25%	1.75%	N/A
TLLP Revolving Credit Facility ($300 million) (b)	0.25%	2.50%	3.25%	1.50%	0.50%

_______________

(b) We have the option to elect if the borrowings will bear interest at either a base rate plus the base rate margin, or a Eurodollar rate, for the applicable period, plus, the Eurodollar margin at the time of the borrowing. Letters of credit outstanding under the Tesoro Corporation Revolving Credit Facility and the TPSA Revolving Credit Facility incur fees at the Eurodollar margin rate and the base rate margin, respectively.

Tesoro Corporation Revolving Credit Facility (“Revolving Credit Facility”)

At June 30, 2012, our Revolving Credit Facility provided for borrowings (including letters of credit) up to the lesser of the amount of a periodically adjusted borrowing base of approximately $3.0 billion, consisting of Tesoro’s eligible cash and cash equivalents, receivables and petroleum inventories, net of the standard reserve as defined, or the Revolving Credit Facility’s total capacity of $1.85 billion. The total available capacity can be increased up to an aggregate amount of $2.25 billion, subject to receiving increased commitments. In June 2012, we amended the Revolving Credit Facility agreement to provide for the application of certain credit enhancements to transfer the credit risk associated with certain commercial trade receivables. As of June 30, 2012, we had unused credit availability of approximately 51% of the eligible borrowing base.

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The Revolving Credit Facility is guaranteed by substantially all of Tesoro’s active domestic subsidiaries, excluding TLGP and TLLP and its subsidiaries, and is secured by substantially all of the crude oil and refined product inventories, cash and receivables of Tesoro's active domestic subsidiaries. TPSA is also not a guarantor of the Revolving Credit Facility.

Borrowing availability under the Revolving Credit Facility is based on a minimum fixed charge coverage ratio. In addition, we have a default covenant, which requires us to maintain specified levels of tangible net worth. We were in compliance with our debt covenants as of and for the six months ended June 30, 2012.

Our committed Revolving Credit Facility is scheduled to mature on March 16, 2016. The Revolving Credit Facility will terminate if the Company does not refinance or pay in full, the Company's 6 1/4% Senior Notes due November 2012 on or prior to the stated maturity date, or refinance or pay in full, the Company's 6 5/8% Senior Notes due November 2015 on or prior to the stated maturity date.

Letter of Credit Agreements

The Revolving Credit Facility allows us to obtain letters of credit under separate letter of credit agreements for foreign crude oil purchases. As of June 30, 2012, our four separate uncommitted letter of credit agreements had $541 million outstanding. Letters of credit outstanding under these agreements incur fees 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.

TPSA Revolving Credit Facility

As part of our business strategy, we formed TPSA, a directly and wholly owned subsidiary of Tesoro, to further utilize our leased pipeline and tank facilities in Panama. In October 2011, TPSA amended and restated its 364-day uncommitted, secured revolving credit agreement. TPSA is an unrestricted subsidiary under our outstanding indentures. The TPSA Revolving Credit Facility is non-recourse to Tesoro and is guaranteed by TPSA’s assets. The TPSA Revolving Credit Facility includes two uncommitted facilities, which provide for revolving borrowings, swing line loans and daylight overdraft loans and letters of credit. The TPSA Revolving Credit Facility is scheduled to mature in October 2012.

The maximum capacity of these facilities as of June 30, 2012, was $500 million, consisting of $350 million under the first facility and $150 million under the second facility. Our total capacity under the TPSA facilities can be further increased up to $700 million provided the facilities’ maximum amounts do not exceed $550 million and $350 million, respectively. At June 30, 2012, our TPSA Revolving Credit Facility provided for borrowings (including letters of credit) up to the lesser of the amount of a periodically adjusted borrowing base that consists of TPSA’s eligible receivables and petroleum inventories, net of reserves, or the agreement's capacity based on the net worth of TPSA. We had $50 million in borrowings outstanding under this agreement and no letters of credit outstanding as of June 30, 2012. During the 2012 Period, we reduced our borrowings under this facility by $67 million.

The TPSA Revolving Credit Facility contains certain default covenants and conditions relative to TPSA's financial results that, among other things, limit TPSA’s ability to incur indebtedness or carry inventory levels above certain defined maximums. TPSA is also required to maintain specified levels of adjusted tangible net worth (as defined), and adjusted net working capital (as defined). We were in compliance with all TPSA Revolving Credit Facility covenants and conditions as of and for the six months ended June 30, 2012.

TLLP Revolving Credit Facility

TLLP amended the TLLP Revolving Credit Facility effective March 30, 2012. Concurrent with the execution of the amendment, and pursuant to the terms of the original agreement, TLLP exercised its option to increase the total loan availability under the TLLP Credit Agreement from $150 million to an aggregate of $300 million. The amendment allows TLLP to request that the availability be increased up to an aggregate of $450 million, subject to receiving increased commitments from the lenders, compared to the original agreement, which allowed an aggregate capacity of $300 million. As of June 30, 2012, TLLP had $118 million in borrowings outstanding under this facility.

The TLLP Revolving Credit Facility is non-recourse to Tesoro, except for TLGP, and is guaranteed by all of TLLP's subsidiaries and secured by substantially all of TLLP's assets. Borrowings are available under the TLLP Revolving Credit Facility up to the total available revolving capacity of the facility. The TLLP Revolving Credit Facility is scheduled to mature on April 25, 2014.

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The TLLP Revolving Credit Facility contains affirmative and negative covenants that, among other things, limit or restrict TLLP's ability (as well as those of TLLP's subsidiaries) to:

• incur additional indebtedness and incur liens on assets to secure certain debt;

• pay and make certain restricted payments;

• make distributions from its subsidiaries;

• dispose of assets unless the proceeds from those sales are used to repay debt or are reinvested in its business;

• make certain amendments, modifications or supplements to organization documents and material contracts;

• engage in certain business activities;

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

• enter into transactions with affiliates.

Additionally, covenants require TLLP to maintain certain interest coverage and leverage ratios. We were in compliance with all TLLP Revolving Credit Facility covenants and conditions as of and for the six months ended June 30, 2012.

Capitalization

Our capital structure at June 30, 2012, was comprised of the following (in millions):

Debt, including current maturities:
Tesoro Corporation Revolving Credit Facility	$	—
TPSA Revolving Credit Facility	50
TLLP Revolving Credit Facility	118
6¼% Senior Notes Due 2012	299
65/8% Senior Notes Due 2015	450
6½% Senior Notes Due 2017	473
9¾% Senior Notes Due 2019 (net of unamortized discount of $9 million)	291
Capital lease obligations and other	21
Total Debt	1,702
Stockholders' Equity	4,423
Total Capitalization	$	6,125

At June 30, 2012, our debt to capitalization ratio had decreased to 28% compared to 30% at December 31, 2011, reflecting increased net earnings during the first half of 2012. The reduction in outstanding borrowings due to repayments on our TPSA Revolving Credit Facility during the 2012 Period was offset by additional borrowings by TLLP on the TLLP Revolving Credit Facility to fund the Martinez Terminal transaction in the second quarter of 2012.

From time to time, we may purchase our Senior Notes in the open market or in privately negotiated transactions. The timing and amount of repurchases, if any, will depend on available cash, market conditions and other considerations. We have not purchased any of our Senior Notes during 2012.

Share Buy-Back Programs and Quarterly Cash Dividend

During 2011, our Board of Directors approved a program designed to offset the dilutive effect of future stock-based compensation awards. We purchased approximately 1.0 million shares of common stock at a weighted average price of $24.81 per share for approximately $26 million during the six months ended June 30, 2012, to offset the impact of 2012 grants under the 2011 Long-Term Incentive Plan.

In August 2012, our Board of Directors authorized an additional $500 million share repurchase program and the initiation of a regular quarterly cash dividend of $0.12 per share. The shares will be repurchased at management's discretion in the open market. The authorization has no time limit and may be suspended or discontinued at any time. The dividend is payable on September 14, 2012 to holders of record at the close of business on August 31, 2012.

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Cash Flow Summary

Components of our cash flows are set forth below (in millions):

	Six Months Ended
	June 30,
	2012			2011
Cash Flows From (Used in):
Operating activities	$	724		$	89
Investing activities	(278		)	(111		)
Financing activities	(24		)	(19		)
Increase (Decrease) in Cash and Cash Equivalents	$	422		$	(41	)

Net cash from operating activities during the 2012 Period totaled $724 million, as compared to net cash from operating activities of $89 million in the 2011 Period. The significant increase in net cash from operating activities of $635 million was primarily due to stable inventory volumes in 2012 as compared to a significant increase in inventories during 2011 and higher cash earnings.Net cash used in investing activities increased $167 million to $278 million in the 2012 Period as compared to $111 million in the 2011 Period due to increased capital expenditures during the 2012 Period as a result of our 2012 capital plans. Net cash used in financing activities during the 2012 Period totaled $24 million as compared to $19 million in the 2011 Period. The primary use of cash used in financing activities during the 2012 Period was the purchase of common stock for approximately $26 million to offset the impact of 2012 stock-based compensation award grants. In the 2012 Period, additional borrowings on the TLLP Revolving Credit Facility were offset by net repayments on the TPSA Revolving Credit Facility of $67 million. Net cash used in financing activities during the 2011 Period is comprised of repayments of the Junior Subordinated Notes, the 6 1/4% Senior Notes and the TPSA Revolving Credit Facility, offset by proceeds from issuance of common units related to TLLP of $288 million.

Working capital (excluding cash) decreased $31 million in the 2012 Period, primarily related to decreases in crude oil and product prices, which impact inventory values, related payables and trade receivables. The decrease was offset by net repayments of $67 million of short-term borrowings on the TPSA Revolving Credit Facility.

Capital Expenditures

Capital spending during the 2012 Quarter and 2012 Period was $148 million and $250 million, respectively. Our 2012 expected capital spending is approximately $670 million. Our 2012 Quarter, Period and 2012 full-year expected capital spending amounts are comprised of the following project categories:

	Percent of 2012 Quarter Capital Spending	Percent of 2012 Period Capital Spending	Percent of 2012 Expected Capital Spending
Project Category
Regulatory	13%	16%	15%
Sustaining	17%	19%	25%
Income Improvement	70%	65%	60%

The projected cost estimates for significant capital expenditures, including environmental projects, are described below. These projected cost estimates are subject to further review and analysis and permitting requirements. The estimates below exclude capitalized interest and labor costs, however, actual spending amounts below include these costs.

Utah Refinery. We intend to make capital improvements to our Salt Lake City, Utah refinery. The conversion project is designed to improve yields of gasoline and diesel, improve the flexibility of processing crude feedstocks, and increase throughput capacity by 4 Mbpd. The estimated capital expenditure is approximately $180 million, of which $9 million was spent during the 2012 Period. The conversion project is expected to be completed in two stages in 2013 and 2014.

Martinez Refinery. We intend to make capital improvements to our Avon marine wharf facility. The upgraded facility will allow us to maintain our ability to move products from our refinery, thus supporting higher utilization of our refining assets. The project cost is approximately $125 million. The project is expected to be completed in 2016.

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Washington Refinery. We have planned capital expenditures for an unloading facility at the Washington refinery to accommodate a unit train. This facility will allow the supply of crude oil from the Bakken Shale/Williston Basin region in North Dakota to our Washington refinery. We expect to offer the unit train unloading facility to TLLP. The construction of the facility is expected to be completed in September 2012. We expect to spend approximately $60 million on this project, of which $39 million was spent in the 2012 Period.

Wilmington Refinery. We intend to replace the vacuum distillation unit at our Wilmington refinery. The capital investment for the unit upgrade is expected to be approximately $40 million, of which approximately $13 million was spent in the 2012 Period. The project is currently scheduled to be completed in the fourth quarter of 2012.

North Dakota Refinery. We recently completed a capital project to expand the crude oil throughput capacity of the Mandan, North Dakota refinery from 58 Mbpd to 68 Mbpd. The total capital investment for the expansion was approximately $35 million. The expansion allows the refinery to process additional crude oil from the nearby Bakken Shale/Williston Basin area delivered via the High Plains System. We also intend to spend approximately $35 million to expand the diesel desulfurization unit from 17 Mbpd to 22 Mbpd. This project is expected to be complete in the third quarter of 2013.

Retail. Weexpect to spend approximately $30 million to rebrand retail stations in southern California leased from Thrifty Oil Co. and certain of its affiliates. We transitioned 165 of these stations during the 2012 Quarter and the remaining stations will be phased in during the second half of 2012 and during 2014. We expect to spend $23 million related to the rebranding of approximately 175 of these stations in 2012, of which $15 million was spent in the 2012 Period.

We completed the acquisition of 49 retail stations from SUPERVALU, Inc. in the first quarter of 2012. We paid approximately $37 million for the assets, including inventories of approximately $3 million. We spent approximately $4 million to replace the dispensers at these stations and expect to spend approximately $5 million to rebrand the stations, of which $4 million was spent through June 30, 2012.

Environmental Capital Expenditures

The EPA issued regulations in February 2007 that require the reduction of benzene in gasoline. We spent approximately $9 million during the first half of 2012 to complete projects at our Alaska, Hawaii and Utah refineries to comply with the regulations. Our California refineries do not require capital spending to meet the benzene reduction standards.

Refinery Turnaround Spending

We spent $190 million for refinery turnarounds and catalysts during the 2012 Period and $64 million during the 2012 Quarter, primarily at our Martinez, Hawaii and Alaska refineries. During the remainder of 2012, we expect to spend approximately $70 million, primarily at our Wilmington and Washington refineries.

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 insurance or other third-party recoveries.

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.

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Future expenditures may be required to comply with the Clean Air Act and other federal, state and local requirements for our various sites, including our refineries, tank farms, pipelines, and currently and previously owned or operated terminal and retail station properties. The impact of these legislative and regulatory developments, including any greenhouse gas cap-and-trade program or low carbon fuel standards, could result in increased compliance costs, additional operating restrictions on our business and an increase in the cost of the products we manufacture, which could have a material adverse impact on our consolidated financial position, results of operations and liquidity.

In 2009, the EPA proposed regulating greenhouse gas emissions under the Clean Air Act. The first of these regulations, finalized on April 1, 2010, sets standards for the control of greenhouse gas emissions from light trucks and cars. It could reduce the demand for our manufactured transportation fuels. In addition, other finalized regulations include permitting requirements for stationary sources that emit greenhouse gases above a certain threshold. The resulting permitting requirements could impose emission controls that increase required capital expenditures at our refineries. We cannot currently predict its impact on our financial position, results of operations and liquidity.

In December 2007, the Energy Independence and Security Act was enacted into federal law, which created a second Renewable Fuels Standard (“RFS2”). This standard requires the total volume of renewable transportation fuels (including ethanol and advanced biofuels) sold or introduced in the U.S. to reach 15.2 billion gallons in 2012 and to increase to 36 billion gallons by 2022. The requirements could reduce future demand growth for petroleum products that we manufacture. In the near term, the RFS2 presents ethanol production and logistics challenges for the ethanol, alternative fuel and refining and marketing industries. We are currently meeting the RFS2 requirements through a combination of blending renewable fuels and purchases of Renewable Identification Numbers in the open market. Additional expenditures could be required to logistically accommodate the increased use of renewable transportation fuels. We cannot currently predict its impact on our financial position, results of operations and liquidity.

In California, Assembly Bill 32 (“AB 32”) created a statewide cap on greenhouse gas emissions and requires that the state return to 1990 emissions levels by 2020. AB 32 focuses on using market mechanisms, such as a cap-and-trade program and a low carbon fuel standard (“LCFS”) to achieve emissions reduction targets. Although a court ruled the LCFS unconstitutional in January 2012, the California Air Resources Board (“CARB”) has appealed the decision. On April 23, 2012 the U.S. 9^th Circuit Court of Appeals stayed the lower court's preliminary injunction of CARB's enforcement of the standard pending the appeal. The LCFS became effective in January 2010 and requires a 10% reduction in the carbon intensity of gasoline and diesel fuel by 2020. In 2011, CARB approved cap-and-trade requirements and all of AB 32 related regulations are to be fully implemented by 2020. We cannot predict the ultimate outcome of the court's ruling on the LCFS and the implementation and implications of AB 32 will take many years to realize. Consequently, we cannot currently predict its impact on our financial position, results of operations and liquidity.

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. We believe that resolution of any such claim(s) would not have a material impact on our financial position, results of operations and liquidity. We do not expect our unrecognized tax benefits to change significantly over the next twelve months.

Environmental Liabilities

We are incurring and expect to continue to incur expenses for environmental 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. 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 $91 million and $93 million at June 30, 2012 and December 31, 2011, respectively. These accruals include $55 million for both periods, related to environmental liabilities for site cleanup activities assumed from a prior owner, arising from operations at our Martinez refinery prior to August 2000. Certain projects at the Martinez refinery are subject to a cost-share agreement where we are responsible for 75% of the expenditures. Approximately $45 million of our obligations are related to this agreement. We cannot reasonably determine the full extent of remedial activities that may be required at the Martinez refinery. Therefore, it is possible that we will identify additional investigation and remediation costs as more information becomes available. We have filed insurance claims under environmental insurance policies that provide coverage up to $190 million for expenditures in excess of $50 million in self-insurance, but the insurer has challenged coverage and filed a declaratory relief action in federal court. We have not recognized possible insurance recoveries related to this matter.

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We have investigated conditions at certain active wastewater treatment units at our Martinez refinery.  The investigation was driven by an order received in 2004 from the San Francisco Bay Regional Water Quality Control Board. The order named us as well as two previous owners of the Martinez refinery.  We cannot currently estimate the amount of the ultimate resolution of the order, but we believe it will not have a material adverse impact on our financial position, results of operations or liquidity.

Washington Refinery Fire

In April 2010, the naphtha hydrotreater unit at our Washington refinery was involved in a fire, which fatally injured seven employees and rendered the unit inoperable. Subsequent to the incident, refinery processing was temporarily shut down until the unit reconstruction was completed. The Washington refinery resumed operations at planned rates in November 2010.

In July 2012, we settled all claims brought by the estates and families of the seven fatally injured employees and a third-party truck driver arising from the April 2010 incident at our Washington refinery (Donald and Peggy Zimmerman et al. v. Tesoro Corporation and Tesoro Refining and Marketing et al.).  The resolution of this matter did not have a material impact on our financial position, results of operations or liquidity.

We maintain comprehensive property (including business interruption), workers' compensation, and general liability insurance policies with significant loss limits. Our business interruption insurance deductible was satisfied after we exceeded both 60 days of operational disruption and $25 million in losses primarily based on the operating plan that existed prior to the incident.

We have filed business interruption insurance claims related to this incident. We collected $87 million in business interruption insurance recoveries in 2010 and 2011, that relate to downtime from the incident, which were recorded as an offset to cost of sales in the consolidated statement of operations. As of June 30, 2012, certain business interruption claims remain open.

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. On the basis of existing information, we believe that the resolution of these matters, individually or in the aggregate, will not have a material adverse 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.

In October 2011, MF Global Holding Ltd. (“MF Global”), a broker-dealer we used for derivatives transactions, announced filing under Chapter 11 of the U.S. Bankruptcy Code with the United States Bankruptcy court for the Southern District of New York. We ceased doing business with MF Global and liquidated all accounts during 2011. In July 2012, we contracted to sell the remaining $24 million in cash collateral held by MF Global for approximately $21 million.   

On July 21, 2010, the Dodd-Frank Wall Street Reform and Consumer Protection Act, also known as the Financial Reform Act of 2010, was enacted into federal law. Key provisions of the act require that standardized swaps be cleared through a registered clearinghouse and executed on a registered trading platform with specific margin requirements. These requirements could make these products more complicated or costly by creating new regulatory risks and increasing reporting, capital, and administrative requirements for companies that use derivatives for hedging and trading activities. Final rules implementing this statute were approved by the Commodity Futures Trading Commission on October 19, 2011, and are expected to be effective in late 2012. Although we cannot predict the ultimate impact of these rules, which may result in increased hedging costs and cash collateral requirements, we believe it will not have a material adverse impact on our financial position, results of operations or liquidity.

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Legal

During 2009, Chevron filed a lawsuit against us claiming they are entitled to a share of the refunds we received in 2008 from the owners of the Trans Alaska Pipeline System (“TAPS”). We received $50 million in 2008, net of contingent legal fees, for excessive intrastate rates charged by TAPS during 1997 through 2000, and the period of 2001 through June 2003. Chevron is asserting that it is entitled to a share of its portion of the refunds for retroactive price adjustments under our previous crude oil contracts with them. The trial court judge granted Chevron's motion for summary judgment and awarded them $16 million, including interest in September 2010. We disagree with the trial court and have appealed the decision to the Alaska Supreme Court, in which the proceeding is now pending. We have established an accrual for this matter and believe that the outcome will not have a material impact on our financial position, results of operations or liquidity.

We are a defendant, along with other manufacturing, supply and marketing defendants, in two remaining lawsuits alleging methyl tertiary butyl ether (“MTBE”)contamination in groundwater. The defendants are being sued for having manufactured MTBE and having manufactured, supplied and distributed gasoline containing MTBE. The plaintiffs in the remaining cases, all in California, are municipalities and governmental authorities. The plaintiffs allege, in part, that the defendants are liable for manufacturing or distributing a defective product. The suits generally seek individual, unquantified compensatory and punitive damages and attorney's fees. We intend to vigorously assert our defenses against these claims. While we cannot currently estimate the amount or timing of the resolution of these matters, we have established an accrual for these matters and believe that the outcome will not have a material impact on our financial position, results of operations or liquidity.

Environmental

The EPA has alleged that we have violated certain Clean Air Act regulations at our Alaska, Washington, Martinez, Hawaii and Utah refineries. We are continuing discussions of the EPA's claims with the EPA and the U.S. Department of Justice (“DOJ”). We previously received a notice of violation (“NOV”) in March 2011 from the EPA alleging violations of Title V of the Clean Air Act at our Alaska refinery. The alleged violations in the NOV arise from a 2007 state of Alaska inspection and inspections by the EPA in 2008 and 2010. We also previously received NOV's in 2005 and 2008 alleging violations of the Clean Air Act at our Washington refinery. We are evaluating all of these allegations. The ultimate resolution of these matters could require us to incur material capital expenditures and/or civil penalties. While we cannot currently estimate the amount or timing of the resolution of these matters, and currently believe that the outcome of these matters will not have a material impact on our liquidity or financial position, the ultimate resolution could have a material impact on our interim or annual results of operations.

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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 refining 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, and the prices at which we are able to sell refined products;

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

• 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;

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

• 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;

• 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 or other factors beyond our control;

• 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;

• earthquakes or other natural disasters affecting operations;

• changes in our cash flow from operations;

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

• changes in our inventory levels and carrying costs;

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

• direct or indirect effects on our business resulting from actual or threatened terrorist incidents or acts of war;

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

• seasonal variations in demand for refined products;

• 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 (“SEC”).

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 update any information contained herein or to publicly release the results of any revisions to any forward-looking statements that may be made to reflect events or circumstances that occur, or that we become aware of, after the date of this Quarterly Report on Form 10-Q.

49

ITEM 3. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

Our primary source of market risk is the difference between the prices we sell our refined products for and the prices we pay for crude oil and other feedstocks. We use derivative instruments to manage the risks from changes in the prices of crude oil and refined products, fluctuations in foreign currency exchange rates, or to capture market opportunities. We have a risk committee whose responsibilities include reviewing a quarterly assessment of risks to the corporation and presenting a quarterly risk update to executive management for consideration.

Commodity Price Risks

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 have fluctuated substantially in recent years and depend on many factors. These factors include 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. The prices we sell our refined products for are also affected by local factors such as local market conditions and the level of operations of other suppliers in our markets.

Prices for refined products are influenced by the price of crude oil. Generally, 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 will impact profit margins and could have a significant impact on our earnings and cash flows. Assuming all other factors remained constant, a $1 per barrel change in average gross refining margins, based on our rolling 12-month average throughput of 571 thousand barrels per day (“Mbpd”), would change annualized pre-tax operating income by approximately $208 million.

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 32 million barrels and 31 million barrels at June 30, 2012 and December 31, 2011, respectively. The average cost of our refinery feedstocks and refined products at June 30, 2012, was approximately $52 per barrel on a last-in, first-out (“LIFO”) basis, compared to market prices of approximately $102 per barrel. If market prices decline to a level below the LIFO average cost of these inventories, we would be required to write down the carrying value of our inventory to market.

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. We also use non-trading derivative instruments to manage price risks associated with inventories above or below our target levels. These derivative instruments typically involve options, exchange-traded futures, over-the-counter swaps and options, and physical commodity forward purchase and sale contracts, generally with durations of less than two years. Our hedging strategies are continuously monitored.

We mark-to-market our derivative instruments and recognize the changes in their fair value in our statements of consolidated operations. With the exception of a portion of our Tesoro Panama Company S.A. (“TPSA”) inventory, we elected not to designate derivative instruments as fair value hedges during the six months ended June 30, 2012 and 2011. We use fair value hedge accounting for a portion of our TPSA inventory.

50

Net earnings during the 2012 and 2011second quarters included net gains of $56 million and $86 million, respectively, on our commodity derivative positions comprised of the following (dollars in millions and volumes in millions of barrels):

	Three Months Ended
	June 30,
	2012				2011
	Contract Volumes	Net Gain (Loss)			Contract Volumes	Net Gain
Unrealized gain (loss) carried on open derivative positions from prior period	3	$	(8	)	8	$	44
Realized gain on settled derivative positions	121	68			124	23
Unrealized gain (loss) on open net short derivative positions	3	(4		)	2	19
Net Gain		$	56			$	86

_______

Note: This table includes derivative positions associated with crude oil hedges held by TPSA.

Our open positions at June 30, 2012, will expire at various times primarily during 2012 and 2013. 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 of 3 million barrels at June 30, 2012, a $1.00 per-barrel 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 $3 million.

Tesoro Panama Company S.A.

We formed TPSA to use our leased pipeline and tank facilities in Panama by enhancing strategic partnerships, developing economies of scale around freight and storage opportunities, providing discretionary crude oil trading, expanding global commercial relationships and evaluating opportunities to source crude oil from alternative supply markets. We may use our excess storage capacity in Panama to take advantage of contango markets when the price of crude oil is higher in the future than the current spot price. We use commodity derivatives to hedge crude oil held in connection with these arbitrage opportunities. The table above and sensitivity analysis includes approximately 1.1 million barrels in net open derivative positions at June 30, 2012, entered into to manage exposure to commodity price risks associated with TPSA.

We use fair value hedge accounting for certain derivative instruments acquired by TPSA and the crude oil inventories underlying these instruments. If we designate a hedging relationship as a fair value hedge, we record the changes in fair value of the hedged asset or liability and any ineffective portion in cost of sales in our statements of consolidated operations.

Risk Management

The Company has a system of governance and management oversight and has put in place a number of controls to ensure procedures are properly followed and accountability is present at the appropriate levels. For example, the Company has put in place controls designed to:

• create and maintain a comprehensive risk management policy;

• provide for authorization by the appropriate levels of management;

• provide for segregation of duties;

• maintain an appropriate level of knowledge regarding the execution of and the accounting for derivative instruments; and

• have key performance indicators in place to adequately measure the performance of its hedging activities.

The Company believes the governance structure that it has in place is adequate given the size and sophistication of its hedging program.

51

Counterparty 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. We have risk management policies in place, and continue to monitor closely the status of our counterparties. We perform ongoing credit evaluations of our customers' financial condition, and in certain circumstances, require prepayments, letters of credit or other collateral.

Foreign Currency Risk

We are exposed to exchange rate fluctuations on our purchases of Canadian crude oil. We enter into physical commodity forward purchase and sale contracts (“Forward Contracts”) of Canadian dollars to manage monthly exchange rate fluctuations. We had a $2 million loss related to these transactions for the three months ended June 30, 2012. As of June 30, 2012, we had forward contracts to purchase CAD $52 million and CAD $26 million that matured or will mature on July 25, 2012 and August 24, 2012, respectively. Based on our open forward contract position, a $0.01 change in the Canadian dollar to U.S. dollar exchange rate would change operating income by less than $1 million.

Interest Rate Risk

We utilize fixed-rate long-term debt obligations and other borrowings, which are subject to market risk from changes in interest rates. Changes in interest rates affect the interest expense we incur on our variable-rate debt, and the fair value of our fixed-rate debt. These changes also affect the rates used to discount liabilities, which could result in lower or higher accretion expense over time.  The fair value of our debt was estimated primarily using quoted market prices.  The carrying value and fair value of our debt were approximately $1.7 billion and $1.8 billion, respectively, at both June 30, 2012 and December 31, 2011. We currently do not use interest rate swaps to manage our exposure to interest rate risk, however we continue 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.

ITEM 4. CONTROLS AND PROCEDURES

Disclosure Controls and Procedures

We carried out an evaluation required by the Securities Exchange Act of 1934, as amended (“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 pursuant to Rule 13a-15(b) under the Exchange Act as of the end of the period. Based upon that evaluation, the Chief Executive Officer and Chief Financial Officer concluded that our disclosure controls and procedures are effective. 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 Exchange Act is accumulated and communicated to management, as appropriate.

During the quarter ended June 30, 2012, there have been no changes in our internal control over financial reporting that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

52

PART II — OTHER INFORMATION

ITEM 1.LEGAL PROCEEDINGS

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 and certain matters may require years to resolve. Although we cannot provide assurance, we believe that an adverse resolution of the matters described below will not have a material adverse impact on our consolidated financial position, results of operations or liquidity. 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, 2011.

In July 2012, we settled all claims brought by the estates and families of the seven fatally injured employees and a third-party truck driver arising from the April 2010 incident at our Washington refinery (Donald and Peggy Zimmerman et al. v. Tesoro Corporation and Tesoro Refining and Marketing et al.).  The resolution of this matter did not have a material impact on our financial position, results of operations or liquidity.

In July 2012, we agreed to settle the U.S. Environmental Protection Agency's (“EPA”) allegations concerning alleged violations of the Renewable Fuel Standards (“RFS2”) for $321,000. The allegations relate to our use of renewal identification numbers (“RINs”) that EPA has alleged were fraudulently generated by third parties. We acquired the RINs from third parties to meet our 2010 renewable volumetric obligations to comply with the standard.

In July 2012, we received an offer from the Bay Area Quality Management District to settle 35 notice of violations (“NOV”) for $512,000. The NOVs were issued from November 2009 to July 2011 and allege violations of air quality regulations at our Martinez refinery. We are evaluating the allegations contained in the settlement offer and the resolution of this matter will not have a material impact on our financial position, results of operations or liquidity.

In July 2012, we reached agreement with the South Coast Air Quality Management District (“District”) to settle NOVs issued by the District between December 2009 and May 2012 at our Wilmington refinery alleging violations of air quality regulations. We have agreed to pay $302,000 in penalties and to undertake supplemental environmental projects valued at $130,000 to enhance air emission monitoring and contribute to local environmental education in the community. In January 2012, we received the initial offer from the District to resolve NOVs issued by the District between December 2009 and February 2011. The final resolution of this matter is pending execution of the settlement agreement and will not have a material impact on our financial position, results of operations or liquidity.

We are a defendant, along with other manufacturing, supply and marketing defendants, in two remaining lawsuits alleging methyl tertiary butyl ether (“MTBE”) contamination in groundwater. The defendants are being sued for having manufactured MTBE and having manufactured, supplied and distributed gasoline containing MTBE. The plaintiffs in the remaining cases, all in California, are municipalities and governmental authorities. The plaintiffs allege, in part, that the defendants are liable for manufacturing or distributing a defective product. The suits generally seek individual, unquantified compensatory and punitive damages and attorney's fees. We intend to vigorously assert our defenses against these claims. While we cannot currently estimate the amount or timing of the resolution of these matters, we have established an accrual for these matters and believe that the outcome will not have a material impact on our financial position, results of operations or liquidity.

The names of the courts in which the remaining proceedings are pending and the date instituted are as follows:

Name of Case	Name of Court where proceeding is pending	Date Instituted
City of Fresno v. Chevron USA Inc., et al., Tesoro Petroleum Corporation and Tesoro Refining and Marketing Company, Inc.	United States District Court of Southern District of New York	October 29, 2004
Orange County Water District v. Unocal Corporation et al., Tesoro Petroleum Corporation and Tesoro Refining and Marketing Company, Inc.	United States District Court of Southern District of New York	October 28, 2004

During the first quarter of 2012, we agreed to settle a NOV received from the California State Water Quality Control Board in November 2011, alleging violations of the California Health and Safety Code as a result of a release of naphtha from a tank at our Wilmington refinery. To settle this matter we have agreed to pay $441,000 pending negotiation of the terms of the settlement agreement.

53

ITEM 1A.RISK FACTORS

There have been no significant changes from the risk factors previously disclosed in Item 1A of our 2011 Annual Report on Form 10‑K, other than the changes noted below:

Meeting the requirements of evolving environmental, health and safety laws andregulations including those related to climate change could adversely affect ourperformance.

Consistent with the experience of other U.S. refiners, environmental laws and regulations have raised operating costs and require significant capital investments at our refineries. We believe that existing physical facilities at our refineries are substantially adequate to maintain compliance with existing applicable laws and regulatory requirements. However, we may be required to address conditions that may be discovered in the future and require a response. Also, potentially material expenditures could be required in the future as a result of evolving environmental, health and safety, and energy laws, regulations or requirements that may be adopted or imposed in the future. Future developments in federal and state laws and regulations governing environmental, health and safety and energy matters are especially difficult to predict.

Currently, multiple legislative and regulatory measures to address greenhouse gas emissions (including carbon dioxide, methane and nitrous oxides) are in various phases of consideration, promulgation or implementation. These include requirements effective in January 2010 to report emissions of greenhouse gases to the EPA and proposed federal legislation and regulation as well as state actions to develop statewide or regional programs, each of which require or could require reductions in our greenhouse gas emissions. Requiring reductions in our greenhouse gas emissions could result in increased costs to (i) operate and maintain our facilities, (ii) install new emission controls at our facilities and (iii) administer and manage any greenhouse gas emissions programs, including acquiring emission credits or allotments.

Requiring reductions in our greenhouse gas emissions and increased use of renewable fuels could also decrease the demand for our refined products, and could have a material adverse effect on our business, financial condition and results of operations. For example:

• In California, Assembly Bill 32 (“AB 32”), created a statewide cap on greenhouse gas emissions and requires that the state return to 1990 emission levels by 2020. AB 32 also created a low carbon fuel standard, which would require a 10% reduction in the carbon intensity of fuels by 2020. Although a California court determined that this standard is unconstitutional in January 2012, the California Air Resources Board (“CARB”) has appealed the decision. On April 23, 2012, the U.S. 9^th Circuit Court of Appeals stayed the lower court's preliminary injunction of CARB's enforcement of the standard pending the appeal and we cannot predict the outcome of the pending appeal.

• In December 2007, the Energy Independence and Security Act was enacted into federal law, which created a second renewable fuels standard (“RFS2”). This standard requires the total volume of renewable transportation fuels (including ethanol and advanced biofuels) sold or introduced in the U.S. to reach 15.2 billion gallons in 2012 and rise to 36 billion gallons by 2022.

• The EPA proposed regulations in 2009, that would require the reduction of emissions of greenhouse gases from light trucks and cars, and would establish permitting thresholds for stationary sources that emit greenhouse gases and require emissions controls for those sources. Promulgation of the final rule on April 1, 2010, has resulted in a cascade of related rulemakings by the EPA pursuant to the Clean Air Act relative to controlling greenhouse gas emissions.

Our business may be negatively affected by work stoppages, slowdowns or strikes by our employees.

In June 2012, we completed the negotiation of the collective bargaining agreements covering approximately 1,300 full-time represented employees at the six of our seven refineries covered by collective bargaining agreements. The agreements for approximately 1,060 of the employees will expire in the first quarter of 2015. The agreements covering the remaining employees will expire in the second quarter of 2015. We believe that the contracts ratified at these refineries are fair, competitive and consistent with other national agreements accepted by the United Steelworkers union. 

54

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

The table below provides a summary of all purchases by Tesoro of its common stock during the three-month period ended June 30, 2012.

Period	Total Number of Shares Purchased*	Average Price Paid per Share
April 2012	241,100	$	24.21
May 2012	633,694	$	22.69
June 2012	—	$	—
Total	874,794

__________

* During 2011, our Board of Directors approved a program designed to offset the dilutive effect of future stock-based compensation awards. We entered into a program to purchase approximately 1.0 million shares during 2012 to offset the impact of 2012 grants under the 2011 Long-Term Incentive Plan.  We purchased 0.7 million shares of common stock for approximately $17 million during the three months ended June 30, 2012, for this program. The remaining shares were acquired from employees to satisfy tax withholding obligations in connection with the vesting of restricted stock issued to certain employees.

55

ITEM 6. EXHIBITS

(a) Exhibits

Exhibit Number	Description of Exhibit
10.1	Contribution, Conveyance and Assumption Agreement, effective April 1, 2012, among Tesoro Logistics LP, Tesoro Logistics GP, LLC, Tesoro Logistics Operations LLC, Tesoro Corporation and Tesoro Refining and Marketing Company (incorporated by reference herein to Exhibit 10.1 to the Company's Current Report on Form 8-K filed on April 3, 2012, File No. 1-3473).
10.2	Amendment No. 1 to Omnibus Agreement, dated as of February 28, 2012, among Tesoro Corporation, Tesoro Refining and Marketing Company, Tesoro Companies, Inc., Tesoro Alaska Company, Tesoro Logistics LP and Tesoro Logistics GP, LLC (incorporated by reference herein to Exhibit 10.2 to the Company's Quarterly Report on Form 10-Q for the quarterly period ended March 31, 2012, File No. 1-3473).
10.3	Amended and Restated Omnibus Agreement, effective April 1, 2012, among Tesoro Corporation, Tesoro Refining and Marketing Company, Tesoro Companies, Inc., Tesoro Alaska Company, Tesoro Logistics LP and Tesoro Logistics GP, LLC (incorporated by reference herein to Exhibit 10.2 to the Company's Current Report on Form 8-K filed on April 3, 2012, File No. 1-3473).
10.4	Amorco Marine Terminal Use and Throughput Agreement, effective April 1, 2012, between Tesoro Refining and Marketing Company and Tesoro Logistics Operations, LLC (incorporated by reference herein to Exhibit 10.3 to the Company's Current Report on Form 8-K filed on April 3, 2012, File No. 1-3473).
10.5	Amendment No. 1 and Joinder to Credit Agreement, dated as of March 30, 2012, among Tesoro Logistics LP, certain subsidiaries of Tesoro Logistics LP party thereto, Bank of America, N.A., as administrative agent and L/C Issuer, and the lenders party thereto (incorporated by reference herein to Exhibit 10.4 to the Company's Current Report on Form 8-K filed on April 3, 2012, File No. 1-3473).
10.6	Terminal Expansion Agreement, dated as of February 27, 2012, between Tesoro Logistics Operations LLC and Tesoro Refining and Marketing Company. (incorporated by reference herein to Exhibit 10.6 to the Company's Quarterly Report on Form 10-Q for the quarterly period ended March 31, 2012, File No. 1-3473).
10.7	Omnibus Amendment No. 1 to the Fifth Amended and Restated Credit Agreement and Amended and Restated Security Agreement dated as of June 6, 2012 (incorporated by reference herein to Exhibit 10.1 to the Company's Current Report on Form 8-K filed on June 8, 2012, 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
**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.

56

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:	August 2, 2012	/s/ GREGORY J. GOFF
		Gregory J. Goff
		President and Chief Executive Officer
		(Principal Executive Officer)
Date:	August 2, 2012	/s/ G. SCOTT SPENDLOVE
		G. Scott Spendlove
		Senior Vice President and Chief Financial Officer
		(Principal Financial Officer)

57

EXHIBIT INDEX

Exhibit Number	Description of Exhibit
10.1	Contribution, Conveyance and Assumption Agreement, effective April 1, 2012, among Tesoro Logistics LP, Tesoro Logistics GP, LLC, Tesoro Logistics Operations LLC, Tesoro Corporation and Tesoro Refining and Marketing Company (incorporated by reference herein to Exhibit 10.1 to the Company's Current Report on Form 8-K filed on April 3, 2012, File No. 1-3473).
10.2	Amendment No. 1 to Omnibus Agreement, dated as of February 28, 2012, among Tesoro Corporation, Tesoro Refining and Marketing Company, Tesoro Companies, Inc., Tesoro Alaska Company, Tesoro Logistics LP and Tesoro Logistics GP, LLC (incorporated by reference herein to Exhibit 10.2 to the Company's Quarterly Report on Form 10-Q for the quarterly period ended March 31, 2012, File No. 1-3473).
10.3	Amended and Restated Omnibus Agreement, effective April 1, 2012, among Tesoro Corporation, Tesoro Refining and Marketing Company, Tesoro Companies, Inc., Tesoro Alaska Company, Tesoro Logistics LP and Tesoro Logistics GP, LLC (incorporated by reference herein to Exhibit 10.2 to the Company's Current Report on Form 8-K filed on April 3, 2012, File No. 1-3473).
10.4	Amorco Marine Terminal Use and Throughput Agreement, effective April 1, 2012, between Tesoro Refining and Marketing Company and Tesoro Logistics Operations, LLC (incorporated by reference herein to Exhibit 10.3 to the Company's Current Report on Form 8-K filed on April 3, 2012, File No. 1-3473).
10.5	Amendment No. 1 and Joinder to Credit Agreement, dated as of March 30, 2012, among Tesoro Logistics LP, certain subsidiaries of Tesoro Logistics LP party thereto, Bank of America, N.A., as administrative agent and L/C Issuer, and the lenders party thereto (incorporated by reference herein to Exhibit 10.4 to the Company's Current Report on Form 8-K filed on April 3, 2012, File No. 1-3473).
10.6	Terminal Expansion Agreement, dated as of February 27, 2012, between Tesoro Logistics Operations LLC and Tesoro Refining and Marketing Company. (incorporated by reference herein to Exhibit 10.6 to the Company's Quarterly Report on Form 10-Q for the quarterly period ended March 31, 2012, File No. 1-3473).
10.7	Omnibus Amendment No. 1 to the Fifth Amended and Restated Credit Agreement and Amended and Restated Security Agreement dated as of June 6, 2012 (incorporated by reference herein to Exhibit 10.1 to the Company's Current Report on Form 8-K filed on June 8, 2012, 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
**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.

58

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:	August 2, 2012	/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, G. Scott Spendlove, 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:	August 2, 2012	/s/ G. SCOTT SPENDLOVE
		G. Scott Spendlove
		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 June 30, 2012 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

August 2, 2012

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 June 30, 2012 as filed with the Securities and Exchange Commission on the date hereof (the "Report"), I, G. Scott Spendlove, 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/ G. SCOTT SPENDLOVE

G. Scott Spendlove

Chief Financial Officer

August 2, 2012

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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Tesoro Logistics LP, Schedule of Partner Units (Details)	6 Months Ended
	Jun. 30, 2012
Capital Unit
Limited partner common units outstanding (units)	511,252
Subordinated units outstanding (units)	15,254,890
General partner units outstanding (units)	626,861
Limited Partner
Capital Unit
Percentage ownership	52.00%
General Partner
Capital Unit
Percentage ownership	2.00%

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Benefit Plans (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012 plans	Jun. 30, 2011	Jun. 30, 2012 plans	Jun. 30, 2011
Pension Benefits
General Discussion of Pension Plan
Number of defined benefit plans sponsored (plans)	4		4
Pension Contributions
Employer contributions to employee retirement plan			$ 24
Components of Net Periodic Benefit Cost:
Service cost	7	7	14	14
Interest cost	8	8	15	15
Expected return on plan assets	(6)	(5)	(12)	10
Recognized net actuarial loss	5	5	11	(10)
Recognized curtailment loss	0	1	0	3
Net Periodic Benefit Expense (Income)	14	16	28	32
Other Postretirement Benefit Plans, Defined Benefit
Components of Net Periodic Benefit Cost:
Service cost	1	2	2	3
Interest cost	1	1	2	2
Amortization of prior service credit	(10)	(10)	(19)	(19)
Recognized net actuarial loss	3	3	6	6
Net Periodic Benefit Expense (Income)	$ (5)	$ (4)	$ (9)	$ (8)

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Derivative Instruments, Derivative Gains and Losses (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 30, 2012		Jun. 30, 2011		Jun. 30, 2012		Jun. 30, 2011
Mark-to-Market Derivatives
Derivative Instruments, Gain (Loss)
Recognized in income on derivatives	$ 54		$ 80		$ 34		$ 31
Mark-to-Market Derivatives | Revenues
Derivative Instruments, Gain (Loss)
Recognized in income on derivatives	31		12		21		0
Mark-to-Market Derivatives | Cost of sales
Derivative Instruments, Gain (Loss)
Recognized in income on derivatives	25		70		14		32
Mark-to-Market Derivatives | Foreign currency exchange loss
Derivative Instruments, Gain (Loss)
Recognized in income on derivatives	(2)		(2)		(1)		(1)
Mark-to-Market Derivatives | Commodity Futures Contracts
Derivative Instruments, Gain (Loss)
Recognized in income on derivatives	50		88		38		32
Mark-to-Market Derivatives | Commodity OTC Swap Contracts
Derivative Instruments, Gain (Loss)
Recognized in income on derivatives	0		2		(6)		1
Mark-to-Market Derivatives | Commodity Forward Contracts
Derivative Instruments, Gain (Loss)
Recognized in income on derivatives	6		(8)		3		(1)
Mark-to-Market Derivatives | Foreign Currency Forward Contracts
Derivative Instruments, Gain (Loss)
Recognized in income on derivatives	(2)		(2)		(1)		(1)
Derivatives Designated for Hedge Accounting | Commodity Futures Contracts
Derivative Instruments, Gain (Loss)
Recognized in income on derivatives	0	[1]	4	[1]	0	[1]	3	[1]
Recognized in income on hedged item	0	[1]	(4)	[1]	0	[1]	(4)	[1]
Recognized in income on ineffective portion of derivative (b)	$ 0	[2]	$ 0	[2]	$ 0	[2]	$ (1)	[2]

[1] Losses recognized in income on the derivative and the hedged item are included in cost of sales in the statements of condensed consolidated operations.

[2] For fair value hedges, no component of the derivative instruments’ gains or losses was excluded from the assessment of hedge effectiveness. No amounts were recognized in income for hedged firm commitments that no longer qualify as fair value hedges.

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Commitments and Contingencies, Tax Matters (Details)	6 Months Ended
	Jun. 30, 2012
Commitments and Contingencies Disclosure [Abstract]
Significant change in unrecognized tax benefits	We do not expect our unrecognized tax benefits to change significantly over the next twelve months.

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Fair Value Measurements (Details) (USD $)	6 Months Ended
	Jun. 30, 2012		Dec. 31, 2011
Fair Value Measurements
Net derivative assets	$ 26,000,000		$ 39,000,000
Net derivative liabilities	9,000,000		2,000,000
Total liabilities	15,000,000		5,000,000
Cash collateral posted	21,000,000		75,000,000
Fair value adjustment to physical inventory	0		4,000,000
Percent of trade receivables payables with balances outstanding	1.00%
Days outstanding on trade receivables and payables (days)	90 days
Carrying value of debt	1,700,000,000		1,700,000,000
Fair value of debt	1,800,000,000		1,800,000,000
Commodity Futures Contracts
Fair Value Measurements
Net derivative assets	20,000,000		34,000,000
Net derivative liabilities	9,000,000		0
Commodity OTC Swap Contracts
Fair Value Measurements
Net derivative assets	0		1,000,000
Net derivative liabilities	0		1,000,000
Commodity Forward Contracts
Fair Value Measurements
Net derivative assets	6,000,000		4,000,000
Net derivative liabilities			1,000,000
RINs Obligation
Fair Value Measurements
RINs obligation	6,000,000		3,000,000
Level 1
Fair Value Measurements
Gross derivative assets	588,000,000		86,000,000
Total liabilities	595,000,000		130,000,000
Level 1 | Commodity Futures Contracts
Fair Value Measurements
Gross derivative assets	588,000,000		86,000,000
Gross derivative liabilities	595,000,000		130,000,000
Level 1 | Commodity OTC Swap Contracts
Fair Value Measurements
Gross derivative assets	0		0
Gross derivative liabilities	0		0
Level 1 | Commodity Forward Contracts
Fair Value Measurements
Gross derivative assets	0		0
Gross derivative liabilities			0
Level 1 | RINs Obligation
Fair Value Measurements
RINs obligation	0		0
Level 2
Fair Value Measurements
Gross derivative assets	13,000,000		16,000,000
Total liabilities	16,000,000		13,000,000
Level 2 | Commodity Futures Contracts
Fair Value Measurements
Gross derivative assets	4,000,000		9,000,000
Gross derivative liabilities	7,000,000		6,000,000
Level 2 | Commodity OTC Swap Contracts
Fair Value Measurements
Gross derivative assets	3,000,000		3,000,000
Gross derivative liabilities	3,000,000		3,000,000
Level 2 | Commodity Forward Contracts
Fair Value Measurements
Gross derivative assets	6,000,000		4,000,000
Gross derivative liabilities			1,000,000
Level 2 | RINs Obligation
Fair Value Measurements
RINs obligation	6,000,000		3,000,000
Level 3
Fair Value Measurements
Gross derivative assets	0		0
Total liabilities	0		0
Level 3 | Commodity Futures Contracts
Fair Value Measurements
Gross derivative assets	0		0
Gross derivative liabilities	0		0
Level 3 | Commodity OTC Swap Contracts
Fair Value Measurements
Gross derivative assets	0		0
Gross derivative liabilities	0		0
Level 3 | Commodity Forward Contracts
Fair Value Measurements
Gross derivative assets	0		0
Gross derivative liabilities			0
Level 3 | RINs Obligation
Fair Value Measurements
RINs obligation	0		0
Netting and Collateral (a)
Fair Value Measurements
Net derivative assets	(575,000,000)	[1]	(63,000,000)	[1]
Total liabilities	(596,000,000)	[1]	(138,000,000)	[1]
Netting and Collateral (a) | Commodity Futures Contracts
Fair Value Measurements
Net derivative assets	(572,000,000)	[1]	(61,000,000)	[1]
Net derivative liabilities	(593,000,000)	[1]	(136,000,000)	[1]
Netting and Collateral (a) | Commodity OTC Swap Contracts
Fair Value Measurements
Net derivative assets	(3,000,000)	[1]	(2,000,000)	[1]
Net derivative liabilities	(3,000,000)	[1]	(2,000,000)	[1]
Netting and Collateral (a) | Commodity Forward Contracts
Fair Value Measurements
Net derivative assets	0	[1]	0	[1]
Net derivative liabilities			0	[1]
Netting and Collateral (a) | RINs Obligation
Fair Value Measurements
RINs obligation	$ 0	[1]	$ 0	[1]

[1] Represents the impact of netting assets, liabilities and cash collateral when a legal right of offset exists. As of June 30, 2012 and December 31, 2011, cash collateral amounts of $21 million and $75 million, respectively, are netted with mark-to-market derivative assets.

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Stockholders' Equity (Tables)

6 Months Ended

Jun. 30, 2012

Stockholders' Equity Attributable to Parent [Abstract]

Stockholders' equity and noncontrolling interest

Changes to equity during the six months ended June 30, 2012, are presented below:

	Tesoro Corporation Stockholders' Equity			Noncontrolling Interest			Total Equity
Balance at December 31, 2011	$	3,668		$	310		$	3,978
Net earnings	443			12			455
Shares issued for equity-based compensation awards	15			—			15
Excess tax benefits from stock-based compensation arrangements	3			—			3
Amortization of equity settled awards	14			—			14
Purchases of common stock	(31		)	—			(31		)
Distributions to noncontrolling interest	—			(11		)	(11		)
Balance at June 30, 2012	$	4,112		$	311		$	4,423

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Commitments and Contingencies, Washington Refinery Fire (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended	6 Months Ended		12 Months Ended	24 Months Ended
	Jun. 30, 2011	Jun. 30, 2011	Jun. 30, 2012 Washington Refinery Fire employees	Dec. 31, 2010 Washington Refinery Fire	Dec. 31, 2011 Washington Refinery Fire
Washington Refinery Fire
Loss contingency, period of occurrence			April 2010
Number of fatally injured employees in the refinery incident (employees)			7
Fines and penalties assessed				$ 2.4
Days of operational disruption (days)			60 days
Losses incurred due to interruption			25
Insurance recoveries	$ 37	$ 37			$ 87
Settlement date			July 2012

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Tesoro Logistics LP (Tables)

6 Months Ended

Jun. 30, 2012

Variable Interest Entity, Classification of Carrying Amount, Assets and Liabilities, Net [Abstract]

Subsidiary Balance Sheet

TLLP is a consolidated variable interest entity. With the exception of affiliate balances, which are eliminated in consolidation, and their impact on equity, the TLLP condensed combined consolidated balance sheets as of June 30, 2012 and December 31, 2011, as presented below, are included in the condensed consolidated balance sheets of Tesoro Corporation.

	June 30, 2012		December 31, 2011 (a)
	(In millions)
ASSETS
Cash and cash equivalents	$	21	$	18
Receivables, less allowance for doubtful accounts
Trade	1		1
Affiliate	9		11
Prepayments and other current assets	1		1
Net Property, Plant and Equipment	181		174
Other Noncurrent Assets	2		3
Total Assets	$	215	$	208
LIABILITIES AND EQUITY
Accounts payable
Trade	$	8	$	6
Affiliate	3		3
Deferred revenue - affiliate	2		2
Accrued liabilities	1		2
Other noncurrent liabilities	—		3
Debt	118		50
Equity	83		142
Total Liabilities and Equity	$	215	$	208

________________

(a) Adjusted to include the historical results of the Martinez Terminal.

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Debt, Total Debt (Details) (USD $) In Millions, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Total Debt	$ 1,702	$ 1,701
Tesoro Corporation Revolving Credit Facility
Credit facility	0	0
Tesoro Panama Company S.A. Revolving Credit Facility
Credit facility	50	117
TLLP Revolving Credit Facility
Credit facility	118	50
6 1/4% Senior Notes Due 2012
Senior notes	299	299
Debt instrument interest rate	6.25%	6.25%
6 5/8% Senior Notes Due 2015
Senior notes	450	450
Debt instrument interest rate	6.625%	6.625%
6 1/2% Senior Notes Due 2017
Senior notes	473	473
Debt instrument interest rate	6.50%	6.50%
9 3/4% Senior Notes Due 2019 (net of unamortized discount of $9 million)
Senior notes	291	291
Debt instrument, unamortized discount	9	9
Debt instrument interest rate	9.75%	9.75%
Capital Lease Obligations and Other
Capital Lease Obligations and Other	$ 21	$ 21

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Tesoro Logistics LP, Balance Sheet (Details) (USD $) In Millions, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011		Jun. 30, 2011	Dec. 31, 2010
ASSETS
Cash and cash equivalents	$ 1,322	$ 900		$ 607	$ 648
Receivables, less allowance for doubtful accounts
Trade	1,162	1,272
Prepayments and other current assets	148	216
Net Property, Plant and Equipment	5,288	5,148
Other Noncurrent Assets	707	593
Total Assets	10,408	9,892
Accounts payable
Accrued liabilities	577	526
Other noncurrent liabilities	560	567
Debt	1,350	1,283
Total Liabilities and Equity	10,408	9,892
Tesoro Logistics LP
ASSETS
Cash and cash equivalents	21	18	[1]
Receivables, less allowance for doubtful accounts
Trade	1	1	[1]
Affiliate	9	11	[1]
Prepayments and other current assets	1	1	[1]
Net Property, Plant and Equipment	181	174	[1]
Other Noncurrent Assets	2	3	[1]
Total Assets	215	208	[1]
Accounts payable
Trade	8	6	[1]
Affiliate	3	3	[1]
Deferred revenue- affiliate	2	2	[1]
Accrued liabilities	1	2	[1]
Other noncurrent liabilities	0	3	[1]
Debt	118	50	[1]
Equity	83	142	[1]
Total Liabilities and Equity	$ 215	$ 208	[1]

[1] Adjusted to include the historical results of the Martinez Terminal.

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Basis of Presentation Basis of Presentation (Details)	3 Months Ended	6 Months Ended
	Jun. 30, 2012	Jun. 30, 2012
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Variable interest entity, measure of activity, revenues	98.00%	98.00%

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Debt (Details) (USD $)	3 Months Ended	6 Months Ended
	Jun. 30, 2012	Jun. 30, 2012	Dec. 31, 2011
Tesoro Corporation Revolving Credit Facility
Credit Facility
Adjusted borrowing base	$ 3,000,000,000	$ 3,000,000,000
Total capacity	1,850,000,000	1,850,000,000
Total available capacity	2,250,000,000	2,250,000,000
Letters of credit, amount outstanding	904,000,000	904,000,000
Unused credit availability	946,000,000	946,000,000
Remaining percentage of eligible borrowing base	51.00%	51.00%
Expiration date		Mar. 16, 2016
Line of credit facility, collateral	The Revolving Credit Facility is guaranteed by substantially all of Tesoro’s active domestic subsidiaries, excluding Tesoro Logistics GP (“TLGP”) and TLLP and its subsidiaries, and is secured by substantially all of the crude oil and refined product inventories, cash and receivables of Tesoro's active domestic subsidiaries. TPSA is also not a guarantor of the Revolving Credit Facility.
Line of credit facility, borrowing capacity, description	At June 30, 2012, our Revolving Credit Facility provided for borrowings (including letters of credit) up to the lesser of the amount of a periodically adjusted borrowing base of approximately $3.0 billion, consisting of Tesoro’s eligible cash and cash equivalents, receivables and petroleum inventories, net of the standard reserve as defined, or the Revolving Credit Facility's total capacity of $1.85 billion. The total available capacity can be increased up to an aggregate amount of $2.25 billion, subject to receiving increased commitments.
Letters of Credit Agreements
Credit Facility
Letters of credit, amount outstanding	541,000,000	541,000,000
Number of agreements (agreements)	4	4
Tesoro Panama Company S.A. Revolving Credit Facility
Credit Facility
Total capacity	500,000,000	500,000,000
Total available capacity	700,000,000	700,000,000
Term of Revolving Credit Facility (days)		364 days
Line of credit facility, collateral	TPSA is an unrestricted subsidiary under our outstanding indentures. The TPSA Revolving Credit Facility is non-recourse to Tesoro and is guaranteed by TPSA’s assets.
Line of credit facility, borrowing capacity, description	At June 30, 2012, our TPSA Revolving Credit Facility provided for borrowings (including letters of credit) up to the lesser of the amount of a periodically adjusted borrowing base that consists of TPSA's eligible receivables and petroleum inventories, net of reserves, or the agreement's capacity based on the net worth of TPSA.
First facility
Credit Facility
Total capacity	350,000,000	350,000,000
Total available capacity	550,000,000	550,000,000
Second facility
Credit Facility
Total capacity	150,000,000	150,000,000
Total available capacity	350,000,000	350,000,000
TLLP Revolving Credit Facility
Credit Facility
Total capacity	300,000,000	300,000,000	150,000,000
Total available capacity	$ 450,000,000	$ 450,000,000	$ 300,000,000
Expiration date		Apr. 25, 2014
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 and secured by substantially all of TLLP’s assets.
Line of credit facility, borrowing capacity, description	Borrowings are available under the TLLP Revolving Credit Facility up to the total available revolving capacity of the facility.

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Condensed Consolidating Financial Information, Balance Sheet (Details) (USD $) In Millions, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011	Jun. 30, 2011	Dec. 31, 2010
Current Assets:
Cash and cash equivalents	$ 1,322	$ 900	$ 607	$ 648
Receivables, less allowance for doubtful accounts	1,162	1,272
Inventories	1,781	1,763
Prepayments and other current assets	148	216
Total Current Assets	4,413	4,151
Net Property, Plant and Equipment	5,288	5,148
Investment in Subsidiaries	0	0
Long-Term Receivables from Affiliates	0	0
Other Noncurrent Assets	707	593
Total Assets	10,408	9,892
Current Liabilities:
Accounts payable and accrued liabilities	2,768	2,831
Current maturities of debt	352	418
Total Current Liabilities	3,120	3,249
Long-Term Payables to Affiliates	0	0
Debt	1,350	1,283
Other Noncurrent Liabilities	1,515	1,382
Equity - Tesoro Corporation	4,112	3,668
Equity - Noncontrolling interest	311	310
Total Liabilities and Equity	10,408	9,892
Parent
Current Assets:
Cash and cash equivalents	0	0	0	0
Receivables, less allowance for doubtful accounts	1	1
Inventories	0	0
Prepayments and other current assets	70	106
Total Current Assets	71	107
Net Property, Plant and Equipment	0	0
Investment in Subsidiaries	4,875	4,436
Long-Term Receivables from Affiliates	2,237	1,944
Other Noncurrent Assets	38	42
Total Assets	7,221	6,529
Current Liabilities:
Accounts payable and accrued liabilities	148	85
Current maturities of debt	299	299
Total Current Liabilities	447	384
Long-Term Payables to Affiliates	0	0
Debt	1,332	1,264
Other Noncurrent Liabilities	1,330	1,200
Equity - Tesoro Corporation	4,112	3,681
Equity - Noncontrolling interest	0	0
Total Liabilities and Equity	7,221	6,529
Guarantor subsidiaries
Current Assets:
Cash and cash equivalents	1,277	805	562	612
Receivables, less allowance for doubtful accounts	1,094	1,189
Inventories	1,504	1,416
Prepayments and other current assets	68	88
Total Current Assets	3,943	3,498
Net Property, Plant and Equipment	5,021	4,925
Investment in Subsidiaries	(248)	(284)
Long-Term Receivables from Affiliates	0	0
Other Noncurrent Assets	668	548
Total Assets	9,384	8,687
Current Liabilities:
Accounts payable and accrued liabilities	2,425	2,420
Current maturities of debt	3	2
Total Current Liabilities	2,428	2,422
Long-Term Payables to Affiliates	2,161	1,922
Debt	18	19
Other Noncurrent Liabilities	181	177
Equity - Tesoro Corporation	4,596	4,147
Equity - Noncontrolling interest	0	0
Total Liabilities and Equity	9,384	8,687
Non-Guarantors
Current Assets:
Cash and cash equivalents	45	95	45	36
Receivables, less allowance for doubtful accounts	67	82
Inventories	277	347
Prepayments and other current assets	10	22
Total Current Assets	399	546
Net Property, Plant and Equipment	267	223
Investment in Subsidiaries	298	282
Long-Term Receivables from Affiliates	0	0
Other Noncurrent Assets	119	53
Total Assets	1,083	1,104
Current Liabilities:
Accounts payable and accrued liabilities	195	326
Current maturities of debt	50	117
Total Current Liabilities	245	443
Long-Term Payables to Affiliates	76	22
Debt	118	50
Other Noncurrent Liabilities	4	5
Equity - Tesoro Corporation	329	274
Equity - Noncontrolling interest	311	310
Total Liabilities and Equity	1,083	1,104
Eliminations
Current Assets:
Cash and cash equivalents	0	0	0	0
Receivables, less allowance for doubtful accounts	0	0
Inventories	0	0
Prepayments and other current assets	0	0
Total Current Assets	0	0
Net Property, Plant and Equipment	0	0
Investment in Subsidiaries	(4,925)	(4,434)
Long-Term Receivables from Affiliates	(2,237)	(1,944)
Other Noncurrent Assets	(118)	(50)
Total Assets	(7,280)	(6,428)
Current Liabilities:
Accounts payable and accrued liabilities	0	0
Current maturities of debt	0	0
Total Current Liabilities	0	0
Long-Term Payables to Affiliates	(2,237)	(1,944)
Debt	(118)	(50)
Other Noncurrent Liabilities	0	0
Equity - Tesoro Corporation	(4,925)	(4,434)
Equity - Noncontrolling interest	0	0
Total Liabilities and Equity	$ (7,280)	$ (6,428)

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Stock-Based Compensation Stock-Based Compensation, Description (Details) (USD $) In Millions, except Share data, unless otherwise specified	6 Months Ended
	Jun. 30, 2012	Dec. 31, 2011
Market stock units
Stock-Based Compensation Arrangement by Stock-based Payment Award
Market condition market stock units	50.00%
Weighted average payout percentage	94.00%
Total unrecognized compensation cost related to unvested awards	$ 25
Total unrecognized compensation cost, period for recognition (years)	2 years 4 months 24 days
Payout percentage assumption	100.00%
Award vesting period (years)	3 years
Market stock unit and performance share award activity (units, shares)
Outstanding at January 1, 2012	424,000
Granted	665,000
Forfeited	(25,000)
Outstanding at June 30, 2012	1,064,000
Weighted Average Grant-Date Fair Value and Intrinsic Value
Weighted Average Grant-Date Fair Value, Nonvested at January 1, 2012	$ 34.22
Weighted Average Grant-Date Fair Value, Granted	$ 33.93
Weighted Average Grant-Date Fair Value, Forfeited	$ 34.18
Weighted Average Grant-Date Fair Value, Nonvested at June 30, 2012	$ 34.04
Intrinsic Value Non-vested at January 1, 2012	9
Intrinsic Value Non-vested at June 30, 2012	25
Market stock units | Minimum
Stock-Based Compensation Arrangement by Stock-based Payment Award
Vesting percentages of stock based compensation arrangements	50.00%
Market stock units | Maximum
Stock-Based Compensation Arrangement by Stock-based Payment Award
Vesting percentages of stock based compensation arrangements	200.00%
Performance share awards
Stock-Based Compensation Arrangement by Stock-based Payment Award
Weighted average payout percentage	60.00%
Total unrecognized compensation cost related to unvested awards	14
Total unrecognized compensation cost, period for recognition (years)	2 years 3 months 18 days
Payout percentage assumption	100.00%
Award vesting period (years)	3 years
Market stock unit and performance share award activity (units, shares)
Outstanding at January 1, 2012	274,000
Granted	380,000
Forfeited	(3,000)
Outstanding at June 30, 2012	651,000
Weighted Average Grant-Date Fair Value and Intrinsic Value
Weighted Average Grant-Date Fair Value, Nonvested at January 1, 2012	$ 31.53
Weighted Average Grant-Date Fair Value, Granted	$ 30.98
Weighted Average Grant-Date Fair Value, Forfeited	$ 31.90
Weighted Average Grant-Date Fair Value, Nonvested at June 30, 2012	$ 31.20
Performance share awards | Minimum
Stock-Based Compensation Arrangement by Stock-based Payment Award
Vesting percentages of stock based compensation arrangements	0.00%
Performance share awards | Maximum
Stock-Based Compensation Arrangement by Stock-based Payment Award
Vesting percentages of stock based compensation arrangements	200.00%
Stock appreciation rights
Weighted Average Grant-Date Fair Value and Intrinsic Value
Cash paid to settle awards	9
Stock-based compensation arrangement by stock-based payment award, instruments exercised (SARs)	700,000
Stock-based compensation liability	$ 49	$ 55

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Derivative Instruments, Derivative Assets and Liabilities (Details) (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2012		Dec. 31, 2011
Derivatives, Fair Value
Derivative maturity period (months)	18 months
Net fair value of derivatives: assets	$ 26		$ 39
Net fair value of derivatives: liabilities	9		2
Derivative, Collateral
Cash collateral outstanding	21		75
Mark-to-Market Derivatives (a)
Derivatives, Fair Value
Derivative assets	601	[1]	102	[1]
Derivative liabilities	605	[1]	140	[1]
Commodity Futures Contracts | Prepayments and other current assets | Mark-to-Market Derivatives (a)
Derivatives, Fair Value
Derivative assets	592	[1]	95	[1]
Derivative liabilities	602	[1]	136	[1]
Commodity OTC Swap Contracts
Derivative, Collateral
Cash collateral outstanding	0
Commodity OTC Swap Contracts | Receivables | Mark-to-Market Derivatives (a)
Derivatives, Fair Value
Derivative assets	3	[1]	1	[1]
Derivative liabilities	0	[1]	0	[1]
Commodity OTC Swap Contracts | Accounts Payable | Mark-to-Market Derivatives (a)
Derivatives, Fair Value
Derivative assets	0	[1]	2	[1]
Derivative liabilities	3	[1]	3	[1]
Commodity Forward Contracts | Receivables | Mark-to-Market Derivatives (a)
Derivatives, Fair Value
Derivative assets	6	[1]	4	[1]
Derivative liabilities	0	[1]	0	[1]
Commodity Forward Contracts | Accounts Payable | Mark-to-Market Derivatives (a)
Derivatives, Fair Value
Derivative assets	0	[1]	0	[1]
Derivative liabilities	0	[1]	1	[1]
Less: Counterparty Netting and Cash Collateral (b)
Derivatives, Fair Value
Net fair value of derivatives: assets	(575)	[2]	(63)	[2]
Net fair value of derivatives: liabilities	$ (596)	[2]	$ (138)	[2]

[1] The above fair values are presented as gross amounts, including when the derivatives are subject to master netting arrangements and qualify for net presentation in the condensed consolidated balance sheet.

[2] As of June 30, 2012 and December 31, 2011, cash collateral amounts of $21 million and $75 million, respectively, are being netted with mark-to-market commodity future contracts.

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Inventories (Notes)

6 Months Ended

Jun. 30, 2012

Inventory Disclosure [Abstract]

INVENTORIES

INVENTORIES

Components of inventories were as follows (in millions):

	June 30, 2012		December 31, 2011
Domestic crude oil and refined products	$	1,362	$	1,273
Foreign subsidiary crude oil	277		346
Materials and supplies	90		87
Oxygenates and by-products	36		43
Merchandise	16		14
Total Inventories	$	1,781	$	1,763

We use the last-in, first-out cost method as the primary method to determine the cost of crude oil held by our U.S. subsidiaries (“Domestic crude oil”) and refined product inventories in our refining and retail segments. We determine the carrying value of inventories of crude oil held by our foreign subsidiaries (“Foreign subsidiary crude oil”), oxygenates, and by-products using the first-in, first-out cost method. The total carrying value of our crude oil and refined product inventories was less than replacement cost by approximately $1.5 billion and $1.7 billion at June 30, 2012 and December 31, 2011, respectively.

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Operating Segments (Details)	6 Months Ended
	Jun. 30, 2012 segments
Segment Reporting Information
Number of operating segments (segments)	2
Foreign operations	We do not have significant operations in foreign countries. Therefore, revenue in foreign countries and long-lived assets located in foreign countries are not material to our operations.
Refining
Segment Reporting Information
Number of refineries (refineries)	7
Segment reporting description	We own and operate seven petroleum refineries located in California, Washington, Alaska, Hawaii, North Dakota and Utah. These refineries 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, at wholesale through terminal facilities and other locations. Our refining segment also sells refined products to unbranded marketers and occasionally exports refined products to foreign markets.
Retail
Segment Reporting Information
Number of states with retail sites (states)	18
Segment reporting description	Our retail segment sells gasoline, diesel fuel and convenience store items through company-operated retail stations and branded jobber/dealers in 18 states.

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Earnings Per Share (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Basic:
Net earnings attributable to Tesoro Corporation stockholders	$ 387	$ 218	$ 443	$ 325
Weighted average common shares outstanding (shares)	139.6	142.6	139.5	142.1
Basic Earnings Per Share (dollars per share)	$ 2.77	$ 1.54	$ 3.18	$ 2.29
Diluted:
Net earnings attributable to Tesoro Corporation stockholders	$ 387	$ 218	$ 443	$ 325
Weighted average common shares outstanding (shares)	139.6	142.6	139.5	142.1
Common stock equivalents (stock equivalents)	0.9	1.8	1.7	2.1
Total diluted shares (shares)	140.5	144.4	141.2	144.2
Diluted Earnings Per Share (dollars per share)	$ 2.75	$ 1.52	$ 3.14	$ 2.26

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Derivative Instruments (Tables)

6 Months Ended

Jun. 30, 2012

Derivative Instruments, Gain (Loss) Recognized in Income, Net [Abstract]

Schedule of Mark-to-Market Derivatives

Gains (losses) for our mark-to market derivatives for the three and six months ended June 30, 2012 and 2011, were as follows (in millions):

	Three Months Ended						Six Months Ended
	June 30,						June 30,
Mark-to-Market Derivatives:	2012			2011			2012			2011
Commodity Futures Contracts	$	50		$	88		$	38		$	32
Commodity OTC Swap Contracts	—			2			(6		)	1
Commodity Forward Contracts	6			(8		)	3			(1		)
Foreign Currency Forward Contracts	(2		)	(2		)	(1		)	(1		)
Total Mark-to-Market Derivatives	$	54		$	80		$	34		$	31

The income statement location of gains (losses) for our mark-to market derivatives above were as follows (in millions):

	Three Months Ended						Six Months Ended
	June 30,						June 30,
Income Statement Location:	2012			2011			2012			2011
Revenues	$	31		$	12		$	21		$	—
Cost of sales	25			70			14			32
Foreign currency exchange loss	(2		)	(2		)	(1		)	(1		)
Total Gain on Mark-to-Market Derivatives	$	54		$	80		$	34		$	31

Schedule of Derivatives Designated for Hedge Accounting

Gains (losses) on our derivatives designated for hedge accounting during the three and six months ended June 30, 2012, were as follows (in millions):

	Three Months Ended					Six Months Ended
	June 30,					June 30,
Derivatives Designated for Hedge Accounting:	2012		2011			2012		2011
Commodity Futures Contracts (a):
Recognized in Income on Derivatives	$	—	$	4		$	—	$	3
Recognized in Income on Hedged Item	—		(4		)	—		(4		)
Recognized in Income on Ineffective Portion of Derivative (b)	$	—	$	—		$	—	$	(1	)

________________

(a) Losses recognized in income on the derivative and the hedged item are included in cost of sales in the statements of condensed consolidated operations.

(b) For fair value hedges, no component of the derivative instruments’ gains or losses was excluded from the assessment of hedge effectiveness. No amounts were recognized in income for hedged firm commitments that no longer qualify as fair value hedges.

Derivative, Fair Value, Gross Amount Not Offset Against Collateral, Net [Abstract]

Schedule of Derivative Instruments in Statement of Financial Position

The following table presents the fair value (in millions) of our derivative instruments as of June 30, 2012 and December 31, 2011. 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 have elected to offset the recognized fair value amounts for multiple derivative instruments executed with the same counterparty in our financial statements. As a result, the asset and liability amounts below will not agree with the amounts presented in our condensed consolidated balance sheets.

		Derivative Assets						Derivative Liabilities
	Balance Sheet Location	June 30, 2012			December 31, 2011			June 30, 2012			December 31, 2011
Mark-to-Market Derivatives (a):
Commodity Futures Contracts	Prepayments and other current assets	$	592		$	95		$	602		$	136
Commodity OTC Swap Contracts	Receivables	3			1			—			—
Commodity OTC Swap Contracts	Accounts payable	—			2			3			3
Commodity Forward Contracts	Receivables	6			4			—			—
Commodity Forward Contracts	Accounts payable	—			—			—			1
Total Gross Mark-to-Market Derivatives		601			102			605			140
Less: Counterparty Netting and Cash Collateral (b)		(575		)	(63		)	(596		)	(138		)
Total Net Fair Value of Derivatives		$	26		$	39		$	9		$	2

________________

(a) The above fair values are presented as gross amounts, including when the derivatives are subject to master netting arrangements and qualify for net presentation in the condensed consolidated balance sheet.

(b) As of June 30, 2012 and December 31, 2011, cash collateral amounts of $21 million and $75 million, respectively, are being netted with mark-to-market commodity future contracts.

Notional Amount of Derivatives, Additional Categories of Derivatives [Abstract]

Schedule of Open Long (Short) Positions

The information below presents the net volume of outstanding commodity contracts by type of instrument and year of maturity as of June 30, 2012 (volumes in thousands of barrels):

Mark-to-Market Derivatives
Derivative instrument and Year of maturity	Long (Short) Contract Volumes
Futures
2012	(1,075)
2013	(283)
Forwards
2012	(1,499)
Options
2012	25

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Fair Value Measurements (Tables)

6 Months Ended

Jun. 30, 2012

Fair Value Disclosures [Abstract]

Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]

Financial instruments recognized at fair values in our condensed consolidated balance sheets by level within the fair value hierarchy were as follows (in millions):

	Level 1		Level 2		Level 3		Netting and Collateral (a)			Total as of June 30, 2012
Assets:
Commodity Futures Contracts	$	588	$	4	$	—	$	(572	)	$	20
Commodity OTC Swap Contracts	—		3		—		(3		)	—
Commodity Forward Contracts	—		6		—		—			6
Total Assets	$	588	$	13	$	—	$	(575	)	$	26
Liabilities:
Commodity Futures Contracts	$	595	$	7	$	—	$	(593	)	$	9
Commodity OTC Swap Contracts	—		3		—		(3		)	—
RINs Obligation	—		6		—		—			6
Total Liabilities	$	595	$	16	$	—	$	(596	)	$	15

	Level 1		Level 2		Level 3		Netting and Collateral (a)			Total as of December 31, 2011
Assets:
Commodity Futures Contracts	$	86	$	9	$	—	$	(61	)	$	34
Commodity OTC Swap Contracts	—		3		—		(2		)	1
Commodity Forward Contracts	—		4		—		—			4
Total Assets	$	86	$	16	$	—	$	(63	)	$	39
Liabilities:
Commodity Futures Contracts	$	130	$	6	$	—	$	(136	)	$	—
Commodity OTC Swap Contracts	—		3		—		(2		)	1
Commodity Forward Contracts	—		1		—		—			1
RINs Obligation	—		3		—		—			3
Total Liabilities	$	130	$	13	$	—	$	(138	)	$	5

________________

(a) Represents the impact of netting assets, liabilities and cash collateral when a legal right of offset exists. As of June 30, 2012 and December 31, 2011, cash collateral amounts of $21 million and $75 million, respectively, are netted with mark-to-market derivative assets.

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Commitments and Contingencies, Environmental Liabilities (Details) (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2012	Dec. 31, 2011
Environmental Exit Cost
Accruals for environmental expenditures	$ 91	$ 93
Cost-share arrangement percentage responsible	.75
Martinez refinery
Environmental Exit Cost
Accruals for environmental expenditures	55	55
Environmental accrual cost-share arrangment	45
Environmental insurance coverage ceiling	190
Self insurance deductible	$ 50
Number of previous owners (owners)	2

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Earnings Per Share, Potentially Dilutive Stock (Details) (Stock options (a)) In Millions, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 30, 2012		Jun. 30, 2011		Jun. 30, 2012		Jun. 30, 2011
Stock options (a)
Antidilutive Securities Excluded from Computation of Earnings Per Share
Antidilutive securities excluded from computation of earnings per share (options)	2.8	[1]	3.1	[1]	2.9	[1]	3.1	[1]

[1] Stock options presented above were excluded as the exercise prices were greater than the average market price of the common stock during each respective reporting period.

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Debt (Tables)

6 Months Ended

Jun. 30, 2012

Debt Disclosure [Abstract]

Schedule of Debt

Our total debt at June 30, 2012 and December 31, 2011, was comprised of the following (in millions):

Debt, including current maturities:	June 30, 2012		December 31, 2011
Tesoro Corporation Revolving Credit Facility	$	—	$	—
Tesoro Panama Company S.A. (“TPSA”) Revolving Credit Facility	50		117
TLLP Revolving Credit Facility	118		50
6¼% Senior Notes Due 2012	299		299
65/8% Senior Notes Due 2015	450		450
6½% Senior Notes Due 2017	473		473
9¾% Senior Notes Due 2019 (net of unamortized discount of $9 million)	291		291
Capital Lease Obligations and Other	21		21
Total Debt	$	1,702	$	1,701

Schedule of Line of Credit Facilities

As of June 30, 2012, our credit facilities were subject to the following expenses and fees:

Credit Facility	30 day Eurodollar (LIBOR) Rate	Eurodollar Margin	Base Rate	Base Rate Margin	Commitment Fee (unused portion)
Tesoro Corporation Revolving Credit Facility ($1.85 billion) (a)	0.25%	1.75%	3.25%	0.75%	0.375%
TPSA Revolving Credit Facility ($500 million) (a)	0.25%	2.75%	3.25%	1.75%	N/A
TLLP Revolving Credit Facility ($300 million) (a)	0.25%	2.50%	3.25%	1.50%	0.50%

________________

(a) We have the option to elect if the borrowings will bear interest at either a base rate plus the base rate margin, or a Eurodollar rate, for the applicable period, plus, the Eurodollar margin at the time of the borrowing. Letters of credit outstanding under the Tesoro Corporation Revolving Credit Facility and the TPSA Revolving Credit Facility incur fees at the Eurodollar margin rate and the base rate margin, respectively.

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Property, Plant and Equipment (Tables)

6 Months Ended

Jun. 30, 2012

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment

Property, plant and equipment, at cost, is as follows (in millions):

	June 30, 2012			December 31, 2011
Refining	$	6,364		$	6,161
Retail	734			679
Corporate	221			215
Property, plant and equipment, at cost	7,319			7,055
Accumulated depreciation	(2,031		)	(1,907		)
Net property, plant and equipment	$	5,288		$	5,148

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Earnings Per Share (Notes)

6 Months Ended

Jun. 30, 2012

Earnings Per Share [Abstract]

EARNINGS PER SHARE

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, principally consisting of common stock options, non-vested restricted stock, restricted stock units, market stock units and performance share awards outstanding during the period.

Share and per share calculations are presented below (in millions except per share amounts):

	Three Months Ended				Six Months Ended
	June 30,				June 30,
	2012		2011		2012		2011
Basic:
Net earnings attributable to Tesoro Corporation stockholders	$	387	$	218	$	443	$	325
Weighted average common shares outstanding	139.6		142.6		139.5		142.1
Basic Earnings Per Share	$	2.77	$	1.54	$	3.18	$	2.29
Diluted:
Net earnings attributable to Tesoro Corporation stockholders	$	387	$	218	$	443	$	325
Weighted average common shares outstanding	139.6		142.6		139.5		142.1
Common stock equivalents	0.9		1.8		1.7		2.1
Total diluted shares	140.5		144.4		141.2		144.2
Diluted Earnings Per Share	$	2.75	$	1.52	$	3.14	$	2.26

Potentially dilutive common stock equivalents excluded from the calculation of diluted earnings per share, as the effect of including such securities would have been anti-dilutive, were as follows (in millions):

	Three Months Ended		Six Months Ended
	June 30,		June 30,
	2012	2011	2012	2011
Stock options (a)	2.8	3.1	2.9	3.1

________________

(a) Stock options presented above were excluded as the exercise prices were greater than the average market price of the common stock during each respective reporting period.

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Benefit Plans (Tables)

6 Months Ended

Jun. 30, 2012

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

Schedule of Defined Benefit Plans Disclosures

The components of pension benefit expense and other postretirement benefit expense (income) included in the condensed statements of consolidated operations for the three and six months ended June 30, 2012 and 2011, were (in millions):

	Pension Benefits
	Three Months Ended						Six Months Ended
	June 30,						June 30,
	2012			2011			2012			2011
Service cost	$	7		$	7		$	14		$	14
Interest cost	8			8			15			15
Expected return on plan assets	(6		)	(5		)	(12		)	(10		)
Recognized net actuarial loss	5			5			11			10
Recognized curtailment loss	—			1			—			3
Net Periodic Benefit Expense	$	14		$	16		$	28		$	32
	Other Postretirement Benefits
	Three Months Ended						Six Months Ended
	June 30,						June 30,
	2012			2011			2012			2011
Service cost	$	1		$	2		$	2		$	3
Interest cost	1			1			2			2
Amortization of prior service credit	(10		)	(10		)	(19		)	(19		)
Recognized net actuarial loss	3			3			6			6
Net Periodic Benefit Income	$	(5	)	$	(4	)	$	(9	)	$	(8	)

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Tesoro Logistics LP, Contractual Terms Of Agreements With Tesoro Logistics LP (Details)	6 Months Ended
	Jun. 30, 2012
Long-term Purchase Commitment
Minimum throughput of crude oil per month (thousand barrels per day)	65
Price per barrel of crude oil (dollar per barrel)	0.55
Throughput agreement made in connection with the Contribution of the Terminal
Long-term Purchase Commitment
Agreement time period (years)	10- year
Various pipeline transportation, trucking, terminal distribution and storage services agreement
Long-term Purchase Commitment
Agreement time period (years)	2016 through 2022
Number of contract renewals (renewals)	2
Renewal terms (years)	5 years
Trucking transportation agreement
Long-term Purchase Commitment
Number of contract renewals (renewals)	1
Renewal terms (years)	5 years
Omnibus agreement with subsidiary
Long-term Purchase Commitment
Omnibus or administrative fees received	2.5

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Property, Plant and Equipment (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011	Dec. 31, 2011
Property Plant and Equipment, at cost
Property, plant and equipment, at cost	$ 7,319		$ 7,319		$ 7,055
Accumulated depreciation	(2,031)		(2,031)		(1,907)
Net Property, Plant and Equipment	5,288		5,288		5,148
Capitalized interest	4	3	8	7
Refining
Property Plant and Equipment, at cost
Property, plant and equipment, at cost	6,364		6,364		6,161
Retail
Property Plant and Equipment, at cost
Property, plant and equipment, at cost	734		734		679
Corporate
Property Plant and Equipment, at cost
Property, plant and equipment, at cost	$ 221		$ 221		$ 215

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Condensed Consolidated Balance Sheets (Unaudited) (USD $) In Millions, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
CURRENT ASSETS
Cash and cash equivalents	$ 1,322	$ 900
Receivables, less allowance for doubtful accounts	1,162	1,272
Inventories	1,781	1,763
Prepayments and other current assets	148	216
Total Current Assets	4,413	4,151
PROPERTY, PLANT AND EQUIPMENT
Property, plant and equipment, at cost	7,319	7,055
Less accumulated depreciation and amortization	(2,031)	(1,907)
Net Property, Plant and Equipment	5,288	5,148
OTHER NONCURRENT ASSETS
Acquired intangibles, net	220	226
Other, net	487	367
Total Other Noncurrent Assets	707	593
Total Assets	10,408	9,892
CURRENT LIABILITIES
Accounts payable	2,191	2,305
Accrued liabilities	577	526
Current maturities of debt	352	418
Total Current Liabilities	3,120	3,249
DEFERRED INCOME TAXES	955	815
OTHER NONCURRENT LIABILITIES	560	567
DEBT	1,350	1,283
COMMITMENTS AND CONTINGENCIES (Note J)
TESORO CORPORATION STOCKHOLDERS' EQUITY
Common stock, par value $0.16 2/3; authorized 200,000,000 shares; 151,701,485 shares issued (150,733,991 in 2011)	25	25
Preferred stock, no par value; authorized 5,000,000 shares; 0 shares issued	0	0
Additional paid-in capital	1,031	1,000
Retained earnings	3,387	2,944
Treasury stock, 11,906,780 common shares (10,769,510 in 2011), at cost	(256)	(226)
Accumulated other comprehensive loss	(75)	(75)
Total Tesoro Corporation Stockholders' Equity	4,112	3,668
NONCONTROLLING INTEREST	311	310
Total Equity	4,423	3,978
Total Liabilities and Equity	$ 10,408	$ 9,892

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Inventories (Details) (USD $)	Jun. 30, 2012	Dec. 31, 2011
Inventory Disclosure [Abstract]
Domestic crude oil and refined products	$ 1,362,000,000	$ 1,273,000,000
Foreign subsidiary crude oil	277,000,000	346,000,000
Materials and supplies	90,000,000	87,000,000
Oxygenates and by-products	36,000,000	43,000,000
Merchandise	16,000,000	14,000,000
Total Inventories	1,781,000,000	1,763,000,000
Excess of replacement or current costs over stated LIFO value	$ 1,500,000,000	$ 1,700,000,000

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Basis of Presentation (Notes)

6 Months Ended

Jun. 30, 2012

Organization, Consolidation and Presentation of Financial Statements [Abstract]

BASIS OF PRESENTATION

BASIS OF PRESENTATION

As used in this report, the terms “Tesoro,” “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.

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”). The accompanying condensed consolidated financial statements 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, 2011, 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 fairly present the information. 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, 2011.

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 of assets and liabilities and disclosures of contingent 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, based on currently available information. Changes in facts and circumstances may result in revised estimates and actual results could differ from those estimates. The results of operations for any interim period are not necessarily indicative of results for the full year. Certain prior year balances have been reclassified in order to conform to the current year presentation.

Our consolidated financial statements include TLLP, a variable interest entity. 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. Under our long-term transportation agreements with TLLP (discussed further below), transactions with us accounted for 98% of TLLP’s total revenues for the three and six months ended June 30, 2012, respectively. As TLLP does not derive a significant amount of revenue from third parties, there is limited risk to Tesoro associated with TLLP’s operations. However, in the event that TLLP incurs a loss, our operating results will reflect TLLP’s loss, net of intercompany eliminations, to the extent of our ownership interest in TLLP.

New Accounting Standards

The Financial Accounting Standards Board (“FASB”) issued an Accounting Standards Update (“ASU”) in July 2012 related to testing indefinite-lived intangible assets for impairment. This ASU provides the option to assess qualitative factors first to determine whether it is necessary to perform the quantitative impairment test. If the Company believes, as a result of its qualitative assessment, that it is more-likely-than-not that the fair value of the indefinite-lived intangible asset is less than its carrying amount, the quantitative impairment test is required. Otherwise, no further testing is required. The Company can choose to assess qualitative factors first on none, some or all of its indefinite-lived intangible assets. The standard is effective for annual and interim impairment tests performed for fiscal years beginning after September 15, 2012. However, an entity can choose to early adopt the standard, provided that the entity has not yet performed its 2012 annual impairment test or issued its financial statements. Our indefinite-lived intangible assets are immaterial to our condensed consolidated financial statements. The adoption of this standard will not have a material impact on our condensed consolidated financial statements.

The FASB issued an ASU in December 2011, which requires an entity to disclose information about offsetting and related arrangements to enable users of its financial statements to understand the effect of these arrangements on its financial position. The guidance requires entities to disclose both gross information and net information about both instruments and transactions eligible for offset in the balance sheet and instruments and transactions subject to an agreement similar to a master netting arrangement. These provisions are effective for interim and annual reporting periods beginning on January 1, 2013. The adoption of this guidance will not have a material impact on our financial position, but may result in additional disclosures.

The FASB issued an ASU in May 2011 related to fair value measurements and disclosures to achieve common fair value measurements and additional consistency of disclosures between U.S. GAAP and International Financial Reporting Standards. This standard includes amendments that clarify the application of existing fair value measurements and disclosure requirements, while other amendments change a principle or requirement for fair value measurements or disclosures. Some of the changes include (1) the application of the highest and best use and valuation premise concepts, (2) measuring the fair value of an instrument classified in a reporting entity’s shareholders’ equity, and (3) quantitative information required for fair value measurements categorized within level 3 of the fair value hierarchy. In addition, this standard requires additional disclosure for level 3 measurements regarding the sensitivity of fair value to changes in unobservable inputs and any interrelationships between those inputs. The adoption of this guidance, effective January 1, 2012, did not have a material impact on our condensed consolidated financial statements.

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Stockholders' Equity (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011	Dec. 31, 2011
Total Equity
Balance at December 31, 2011			$ 3,978
Net earnings	393	222	455	329
Shares issued for equity-based compensation awards			15
Excess tax benefits from stock-based compensation arrangements			3
Amortization of equity settled awards			14
Purchases of common stock			(31)
Distributions to noncontrolling interest			(11)
Balance at June 30, 2012	4,423		4,423		3,978
Shares issued for equity-based compensation plans (shares)			1.0		1.6
Number of shares purchased (shares)			1.0
Average cost per share (dollar per share)			$ 24.81
Amount paid for share purchases			26
Stock repurchase program, authorized amount	500
Dividends declared (dollar per share)	$ 0.12
Dividends, date to be paid	Sep. 14, 2012
Dividends, date of record	Aug. 31, 2012
Tesoro Corporation Stockholders' Equity
Total Equity
Balance at December 31, 2011			3,668
Net earnings			443
Shares issued for equity-based compensation awards			15
Excess tax benefits from stock-based compensation arrangements			3
Amortization of equity settled awards			14
Purchases of common stock			(31)
Distributions to noncontrolling interest			0
Balance at June 30, 2012	4,112		4,112
Noncontrolling Interest
Total Equity
Balance at December 31, 2011			310
Net earnings			12
Shares issued for equity-based compensation awards			0
Excess tax benefits from stock-based compensation arrangements			0
Amortization of equity settled awards			0
Purchases of common stock			0
Distributions to noncontrolling interest			(11)
Balance at June 30, 2012	$ 311		$ 311

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Operating Segments (Tables)

6 Months Ended

Jun. 30, 2012

Segment Reporting [Abstract]

Schedule of Segment Reporting Information, by Segment

Segment information is as follows:

	Three Months Ended						Six Months Ended
	June 30,						June 30,
	2012			2011			2012			2011
Revenues	(In millions)
Refining:
Refined products	$	7,780		$	7,635		$	15,342		$	13,905
Crude oil resales and other	135			186			291			341
Retail:
Fuel (a)	1,507			1,354			2,813			2,469
Merchandise and other	63			57			118			109
Intersegment sales from Refining to Retail	(1,380		)	(1,269		)	(2,639		)	(2,335		)
Total Revenues	$	8,105		$	7,963		$	15,925		$	14,489
Segment Operating Income
Refining (b)	$	645		$	399		$	836		$	702
Retail	74			38			70			40
Total Segment Operating Income	719			437			906			742
Corporate and unallocated costs	(38		)	(18		)	(91		)	(104		)
Operating Income (c)	681			419			815			638
Interest and financing costs	(34		)	(60		)	(70		)	(103		)
Other expense, net (d)	(18		)	—			(17		)	—
Foreign currency exchange loss	(1		)	(2		)	(1		)	(1		)
Earnings Before Income Taxes	$	628		$	357		$	727		$	534
Depreciation and Amortization Expense
Refining	$	94		$	94		$	185		$	185
Retail	9			10			19			19
Corporate	6			2			8			5
Total Depreciation and Amortization Expense	$	109		$	106		$	212		$	209
Capital Expenditures
Refining	$	121		$	55		$	212		$	93
Retail	24			4			32			7
Corporate	3			4			6			5
Total Capital Expenditures	$	148		$	63		$	250		$	105

______________

(a) Federal and state motor fuel taxes on sales by our retail segment are included in both revenues and cost of sales in our condensed statements of consolidated operations. These taxes, excluding credits, totaled $112 million and $92 million for the three months ended June 30, 2012 and 2011, respectively, and $211 million and $183 million for the six months ended June 30, 2012 and 2011, respectively.

(b) Includes impairment charges related to the change in scope of a capital project at our Wilmington refinery of $48 million for the three and six months ended June 30, 2011.

(c) Includes $37 million in business interruption and property damage recoveries for the three and six months ended June 30, 2011.

(d) Includes accruals related to certain legal matters partially offset by receipts associated with the settlement of a pipeline rate proceeding for the three and six months ended June 30, 2012.

	June 30,		December 31,
	2012		2011
Identifiable Assets:
Refining	$	8,143	$	8,152
Retail	733		644
Corporate	1,532		1,096
Total Assets	$	10,408	$	9,892

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Condensed Consolidating Financial Information, Narrative (Details)	Jun. 30, 2012	Dec. 31, 2011
6 1/4% Senior Notes Due 2012
Debt Instrument
Debt instrument interest rate	6.25%	6.25%
6 5/8% Senior Notes Due 2015
Debt Instrument
Debt instrument interest rate	6.625%	6.625%
6 1/2% Senior Notes Due 2017
Debt Instrument
Debt instrument interest rate	6.50%	6.50%
9 3/4% Senior Notes Due 2019
Debt Instrument
Debt instrument interest rate	9.75%	9.75%

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Inventories Inventories (Policies)

6 Months Ended

Jun. 30, 2012

Inventory Disclosure [Abstract]

Inventory, Policy

We use the last-in, first-out cost method as the primary method to determine the cost of crude oil held by our U.S. subsidiaries (“Domestic crude oil”) and refined product inventories in our refining and retail segments. We determine the carrying value of inventories of crude oil held by our foreign subsidiaries (“Foreign subsidiary crude oil”), oxygenates, and by-products using the first-in, first-out cost method.

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Condensed Consolidating Financial Information (Tables)

6 Months Ended

Jun. 30, 2012

Condensed Financial Information of Parent Company Only Disclosure [Abstract]

Condensed Consolidating Balance Sheet

Condensed Consolidating Balance Sheet as of June 30, 2012

(In millions)

	Parent		Guarantor Subsidiaries			Non-Guarantors		Eliminations			Consolidated
ASSETS
Current Assets:
Cash and cash equivalents	$	—	$	1,277		$	45	$	—		$	1,322
Receivables, less allowance for doubtful accounts	1		1,094			67		—			1,162
Inventories	—		1,504			277		—			1,781
Prepayments and other current assets	70		68			10		—			148
Total Current Assets	71		3,943			399		—			4,413
Net Property, Plant and Equipment	—		5,021			267		—			5,288
Investment in Subsidiaries	4,875		(248		)	298		(4,925		)	—
Long-Term Receivables from Affiliates	2,237		—			—		(2,237		)	—
Other Noncurrent Assets	38		668			119		(118		)	707
Total Assets	$	7,221	$	9,384		$	1,083	$	(7,280	)	$	10,408
LIABILITIES AND EQUITY
Current Liabilities:
Accounts payable and accrued liabilities	$	148	$	2,425		$	195	$	—		$	2,768
Current maturities of debt	299		3			50		—			352
Total Current Liabilities	447		2,428			245		—			3,120
Long-Term Payables to Affiliates	—		2,161			76		(2,237		)	—
Debt	1,332		18			118		(118		)	1,350
Other Noncurrent Liabilities	1,330		181			4		—			1,515
Equity-Tesoro Corporation	4,112		4,596			329		(4,925		)	4,112
Equity-Noncontrolling interest	—		—			311		—			311
Total Liabilities and Equity	$	7,221	$	9,384		$	1,083	$	(7,280	)	$	10,408

Condensed Consolidating Balance Sheet as of December 31, 2011

(In millions)

	Parent		Guarantor Subsidiaries			Non-Guarantors		Eliminations			Consolidated
ASSETS
Current Assets:
Cash and cash equivalents	$	—	$	805		$	95	$	—		$	900
Receivables, less allowance for doubtful accounts	1		1,189			82		—			1,272
Inventories	—		1,416			347		—			1,763
Prepayments and other current assets	106		88			22		—			216
Total Current Assets	107		3,498			546		—			4,151
Net Property, Plant and Equipment	—		4,925			223		—			5,148
Investment in Subsidiaries	4,436		(284		)	282		(4,434		)	—
Long-Term Receivables from Affiliates	1,944		—			—		(1,944		)	—
Other Noncurrent Assets	42		548			53		(50		)	593
Total Assets	$	6,529	$	8,687		$	1,104	$	(6,428	)	$	9,892
LIABILITIES AND EQUITY
Current Liabilities:
Accounts payable and accrued liabilities	$	85	$	2,420		$	326	$	—		$	2,831
Current maturities of debt	299		2			117		—			418
Total Current Liabilities	384		2,422			443		—			3,249
Long-Term Payables to Affiliates	—		1,922			22		(1,944		)	—
Debt	1,264		19			50		(50		)	1,283
Other Noncurrent Liabilities	1,200		177			5		—			1,382
Equity-Tesoro Corporation	3,681		4,147			274		(4,434		)	3,668
Equity-Noncontrolling interest	—		—			310		—			310
Total Liabilities and Equity	$	6,529	$	8,687		$	1,104	$	(6,428	)	$	9,892

Condensed Consolidating Statement of Operations and Comprehensive Income

Condensed Consolidating Statement of Operations and

Comprehensive Income for the Three Months EndedJune 30, 2012

(In millions)

	Parent			Guarantor Subsidiaries			Non- Guarantors			Eliminations			Consolidated
REVENUES	$	—		$	9,768		$	642		$	(2,305	)	$	8,105
Costs and expenses	3			9,103			623			(2,305		)	7,424
OPERATING INCOME (LOSS)	(3		)	665			19			—			681
Equity in earnings (loss) of subsidiaries	391			13			10			(414		)	—
Other expense	(1		)	(50		)	(2		)	—			(53		)
EARNINGS (LOSS) BEFORE INCOME TAXES	387			628			27			(414		)	628
Income tax expense (benefit) (a)	—			237			(2		)	—			235
NET EARNINGS (LOSS)	387			391			29			(414		)	393
Less net income attributable to noncontrolling interest	—			—			6			—			6
NET EARNINGS (LOSS) ATTRIBUTABLE TO TESORO CORPORATION	$	387		$	391		$	23		$	(414	)	$	387
COMPREHENSIVE INCOME (LOSS)
Total comprehensive income (loss)	$	387		$	391		$	29		$	(414	)	$	393
Less noncontrolling interest in comprehensive income	—			—			6			—			6
COMPREHENSIVE INCOME (LOSS) ATTRIBUTABLE TO TESORO CORPORATION	$	387		$	391		$	23		$	(414	)	$	387

_______________

(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 and

Comprehensive Income for the Three Months EndedJune 30, 2011

(In millions)

	Parent			Guarantor Subsidiaries			Non- Guarantors			Eliminations			Consolidated
REVENUES	$	—		$	9,964		$	960		$	(2,961	)	$	7,963
Costs and expenses	1			9,557			947			(2,961		)	7,544
OPERATING INCOME (LOSS)	(1		)	407			13			—			419
Equity in earnings (loss) of subsidiaries	224			(5		)	21			(240		)	—
Other expense	—			(58		)	(4		)	—			(62		)
EARNINGS (LOSS) BEFORE INCOME TAXES	223			344			30			(240		)	357
Income tax expense (a)	1			133			1			—			135
NET EARNINGS (LOSS)	222			211			29			(240		)	222
Less net income attributable to noncontrolling interest	—			—			4			—			4
NET EARNINGS (LOSS) ATTRIBUTABLE TO TESORO CORPORATION	$	222		$	211		$	25		$	(240	)	$	218
COMPREHENSIVE INCOME (LOSS)
Total comprehensive income (loss)	$	222		$	211		$	29		$	(240	)	$	222
Less noncontrolling interest in comprehensive income	—			—			4			—			4
COMPREHENSIVE INCOME (LOSS) ATTRIBUTABLE TO TESORO CORPORATION	$	222		$	211		$	25		$	(240	)	$	218

_______________

(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 and

Comprehensive Income for the Six Months EndedJune 30, 2012

(In millions)

	Parent			Guarantor Subsidiaries			Non- Guarantors			Eliminations			Consolidated
REVENUES	$	—		$	19,401		$	1,238		$	(4,714	)	$	15,925
Costs and expenses	5			18,609			1,210			(4,714		)	15,110
OPERATING INCOME (LOSS)	(5		)	792			28			—			815
Equity in earnings (loss) of subsidiaries	450			—			41			(491		)	—
Other expense	(2		)	(82		)	(4		)	—			(88		)
EARNINGS (LOSS) BEFORE INCOME TAXES	443			710			65			(491		)	727
Income tax expense (a)	—			272			—			—			272
NET EARNINGS (LOSS)	443			438			65			(491		)	455
Less net income attributable to noncontrolling interest	—			—			12			—			12
NET EARNINGS (LOSS) ATTRIBUTABLE TO TESORO CORPORATION	$	443		$	438		$	53		$	(491	)	$	443
COMPREHENSIVE INCOME (LOSS)
Total comprehensive income (loss)	$	443		$	438		$	65		$	(491	)	$	455
Less noncontrolling interest in comprehensive income	—			—			12			—			12
COMPREHENSIVE INCOME (LOSS) ATTRIBUTABLE TO TESORO CORPORATION	$	443		$	438		$	53		$	(491	)	$	443

_______________

(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 and

Comprehensive Income for the Six Months EndedJune 30, 2011

(In millions)

	Parent			Guarantor Subsidiaries			Non- Guarantors			Eliminations			Consolidated
REVENUES	$	—		$	18,205		$	1,648		$	(5,364	)	$	14,489
Costs and expenses	5			17,580			1,630			(5,364		)	13,851
OPERATING INCOME (LOSS)	(5		)	625			18			—			638
Equity in earnings (loss) of subsidiaries	333			(17		)	21			(337		)	—
Other expense	—			(98		)	(6		)	—			(104		)
EARNINGS (LOSS) BEFORE INCOME TAXES	328			510			33			(337		)	534
Income tax expense (benefit) (a)	(1		)	204			2			—			205
NET EARNINGS (LOSS)	329			306			31			(337		)	329
Less net income attributable to noncontrolling interest	—			—			4			—			4
NET EARNINGS (LOSS) ATTRIBUTABLE TO TESORO CORPORATION	$	329		$	306		$	27		$	(337	)	$	325
COMPREHENSIVE INCOME (LOSS)
Total comprehensive income (loss)	$	329		$	306		$	31		$	(337	)	$	329
Less noncontrolling interest in comprehensive income	—			—			4			—			4
COMPREHENSIVE INCOME (LOSS) ATTRIBUTABLE TO TESORO CORPORATION	$	329		$	306		$	27		$	(337	)	$	325

_______________

(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 Cash Flows

Condensed Consolidating Statement of Cash Flows for the Six Months EndedJune 30, 2012

(In millions)

	Parent			Guarantor Subsidiaries			Non-Guarantors			Eliminations			Consolidated
CASH FLOWS FROM (USED IN) OPERATING ACTIVITIES
Net cash from (used in) operating activities	$	9		$	717		$	(2	)	$	—		$	724
CASH FLOWS FROM (USED IN) INVESTING ACTIVITIES
Capital expenditures	—			(234		)	(9		)	—			(243		)
Acquisitions	—			(38		)	—			—			(38		)
Proceeds from asset sales	—			3			—						3
Intercompany notes, net	(65		)	—			—			65			—
Net cash from (used in) investing activities	(65		)	(269		)	(9		)	65			(278		)
CASH FLOWS FROM (USED IN) FINANCING ACTIVITIES
Borrowings under revolving credit agreements	—			—			185			—			185
Repayments on revolving credit agreements	—			—			(184		)	—			(184		)
Repayments of debt	—			(1		)	—						(1		)
Proceeds from stock options exercised	14			—			—			—			14
Excess tax benefits from stock-based compensation arrangements	—			4			—			—			4
Distributions to noncontrolling interest	—			—			(11		)	—			(11		)
Purchases of common stock	(31		)	—			—			—			(31		)
Net intercompany borrowings (repayments)	—			15			50			(65		)	—
Borrowings from general partner	68			—			(68		)	—			—
Distributions to TLLP unitholders and general partner	5			6			(11		)	—			—
Net cash from (used in) financing activities	56			24			(39		)	(65		)	(24		)
INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	—			472			(50		)	—			422
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	—			805			95			—			900
CASH AND CASH EQUIVALENTS, END OF PERIOD	$	—		$	1,277		$	45		$	—		$	1,322

Condensed Consolidating Statement of Cash Flows for the Six Months EndedJune 30, 2011

(In millions)

	Parent			Guarantor Subsidiaries			Non-Guarantors			Eliminations			Consolidated
CASH FLOWS FROM (USED IN) OPERATING ACTIVITIES
Net cash from (used in) operating activities	$	31		$	162		$	(104	)	$	—		$	89
CASH FLOWS FROM (USED IN) INVESTING ACTIVITIES
Capital expenditures	—			(111		)	(1		)	—			(112		)
Proceeds from asset sales	—			1			—			—			1
Intercompany notes, net	59			—			—			(59		)	—
Net cash from (used in) investing activities	59			(110		)	(1		)	(59		)	(111		)
CASH FLOWS FROM (USED IN) FINANCING ACTIVITIES
Borrowings under revolving credit agreements	—			—			115			—			115
Repayments on revolving credit agreements	—			—			(160		)	—			(160		)
Repayments of debt	(243		)	(1		)	—			—			(244		)
Proceeds from stock options exercised	7			—			—			—			7
Purchases of common stock	(7		)	—			—			—			(7		)
Excess tax benefits from stock-based compensation arrangements	—			7			—			—			7
Proceeds from issuance of common units Tesoro Logistics LP	—			—			288			—			288
Net intercompany borrowings (repayments)	—			(265		)	206			59			—
Borrowings from general partner	50			—			(50		)	—			—
Distributions to TLLP unitholders and general partner	126			157			(283		)	—			—
Financing costs and other	(23		)	—			(2		)	—			(25		)
Net cash from (used in) financing activities	(90		)	(102		)	114			59			(19		)
INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	—			(50		)	9			—			(41		)
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	—			612			36			—			648
CASH AND CASH EQUIVALENTS, END OF PERIOD	$	—		$	562		$	45		$	—		$	607

XML

Derivative Instruments Derivative Instruments (Policies)

6 Months Ended

Jun. 30, 2012

General Discussion of Derivative Instruments and Hedging Activities [Abstract]

Derivatives, Policy

The accounting for changes in the fair value of a commodity derivative depends on whether the derivative has been designated in a hedging relationship and whether we have elected the normal purchases and normal sales exception. The accounting for the change in fair value can be summarized as follows:

Derivative Treatment	Accounting Method
Normal purchases and normal sales exception	Accrual accounting
Designated in qualifying hedging relationship	Hedge accounting
All other derivatives	Mark-to-market accounting

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Condensed Consolidating Financial Information, Statement of Operations and Comprehensive Income (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 30, 2012		Jun. 30, 2011		Jun. 30, 2012		Jun. 30, 2011
Condensed Financial Statements, captions
REVENUES	$ 8,105		$ 7,963		$ 15,925		$ 14,489
Costs and expenses	7,424		7,544		15,110		13,851
OPERATING INCOME (LOSS)	681	[1]	419	[1]	815	[1]	638	[1]
Equity in earnings (loss) of subsidiaries	0		0		0		0
Other expense	(53)		(62)		(88)		(104)
EARNINGS (LOSS) BEFORE INCOME TAXES	628		357		727		534
Income tax expense (benefit) (a)	235	[2]	135	[3]	272	[3]	205	[2]
NET EARNINGS (LOSS)	393		222		455		329
Less net income attributable to noncontrolling interest	6		4		12		4
NET EARNINGS (LOSS) ATTRIBUTABLE TO TESORO CORPORATION	387		218		443		325
COMPREHENSIVE INCOME (LOSS)
Total comprehensive income (loss)	393		222		455		329
Less noncontrolling interest in comprehensive income	6		4		12		4
COMPREHENSIVE INCOME (LOSS) ATTRIBUTABLE TO TESORO CORPORATION	387		218		443		325
Parent
Condensed Financial Statements, captions
REVENUES	0		0		0		0
Costs and expenses	3		1		5		5
OPERATING INCOME (LOSS)	(3)		(1)		(5)		(5)
Equity in earnings (loss) of subsidiaries	391		224		450		333
Other expense	(1)		0		(2)		0
EARNINGS (LOSS) BEFORE INCOME TAXES	387		223		443		328
Income tax expense (benefit) (a)	0	[2]	1	[3]	0	[3]	(1)	[2]
NET EARNINGS (LOSS)	387		222		443		329
Less net income attributable to noncontrolling interest	0		0		0		0
NET EARNINGS (LOSS) ATTRIBUTABLE TO TESORO CORPORATION	387		222		443		329
COMPREHENSIVE INCOME (LOSS)
Total comprehensive income (loss)	387		222		443		329
Less noncontrolling interest in comprehensive income	0		0		0		0
COMPREHENSIVE INCOME (LOSS) ATTRIBUTABLE TO TESORO CORPORATION	387		222		443		329
Guarantor subsidiaries
Condensed Financial Statements, captions
REVENUES	9,768		9,964		19,401		18,205
Costs and expenses	9,103		9,557		18,609		17,580
OPERATING INCOME (LOSS)	665		407		792		625
Equity in earnings (loss) of subsidiaries	13		(5)		0		(17)
Other expense	(50)		(58)		(82)		(98)
EARNINGS (LOSS) BEFORE INCOME TAXES	628		344		710		510
Income tax expense (benefit) (a)	237	[2]	133	[3]	272	[3]	204	[2]
NET EARNINGS (LOSS)	391		211		438		306
Less net income attributable to noncontrolling interest	0		0		0		0
NET EARNINGS (LOSS) ATTRIBUTABLE TO TESORO CORPORATION	391		211		438		306
COMPREHENSIVE INCOME (LOSS)
Total comprehensive income (loss)	391		211		438		306
Less noncontrolling interest in comprehensive income	0		0		0		0
COMPREHENSIVE INCOME (LOSS) ATTRIBUTABLE TO TESORO CORPORATION	391		211		438		306
Non-Guarantors
Condensed Financial Statements, captions
REVENUES	642		960		1,238		1,648
Costs and expenses	623		947		1,210		1,630
OPERATING INCOME (LOSS)	19		13		28		18
Equity in earnings (loss) of subsidiaries	10		21		41		21
Other expense	(2)		(4)		(4)		(6)
EARNINGS (LOSS) BEFORE INCOME TAXES	27		30		65		33
Income tax expense (benefit) (a)	(2)	[2]	1	[3]	0	[3]	2	[2]
NET EARNINGS (LOSS)	29		29		65		31
Less net income attributable to noncontrolling interest	6		4		12		4
NET EARNINGS (LOSS) ATTRIBUTABLE TO TESORO CORPORATION	23		25		53		27
COMPREHENSIVE INCOME (LOSS)
Total comprehensive income (loss)	29		29		65		31
Less noncontrolling interest in comprehensive income	6		4		12		4
COMPREHENSIVE INCOME (LOSS) ATTRIBUTABLE TO TESORO CORPORATION	23		25		53		27
Eliminations
Condensed Financial Statements, captions
REVENUES	(2,305)		(2,961)		(4,714)		(5,364)
Costs and expenses	(2,305)		(2,961)		(4,714)		(5,364)
OPERATING INCOME (LOSS)	0		0		0		0
Equity in earnings (loss) of subsidiaries	(414)		(240)		(491)		(337)
Other expense	0		0		0		0
EARNINGS (LOSS) BEFORE INCOME TAXES	(414)		(240)		(491)		(337)
Income tax expense (benefit) (a)	0	[2]	0	[3]	0	[3]	0	[2]
NET EARNINGS (LOSS)	(414)		(240)		(491)		(337)
Less net income attributable to noncontrolling interest	0		0		0		0
NET EARNINGS (LOSS) ATTRIBUTABLE TO TESORO CORPORATION	(414)		(240)		(491)		(337)
COMPREHENSIVE INCOME (LOSS)
Total comprehensive income (loss)	(414)		(240)		(491)		(337)
Less noncontrolling interest in comprehensive income	0		0		0		0
COMPREHENSIVE INCOME (LOSS) ATTRIBUTABLE TO TESORO CORPORATION	$ (414)		$ (240)		$ (491)		$ (337)

[1] Includes $37 million in business interruption and property damage recoveries for the three and six months ended June 30, 2011.

[2] 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.

[3] 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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Tesoro Logistics LP (Notes)

6 Months Ended

Jun. 30, 2012

Variable Interest Entities VIEs [Abstract]

TESORO LOGISTICS LP

TESORO LOGISTICS LP

Tesoro Logistics LP 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 distribute, transport and store crude oil and refined products. Its assets consist of a crude oil gathering system in the Bakken Shale/Williston Basin area of North Dakota and Montana, eight refined products terminals in the midwestern and western United States, one crude oil marine terminal in California, and a crude oil and refined products storage facility and five related short-haul pipelines in Utah.

Effective April 1, 2012, Tesoro entered into a transaction (the “Martinez Terminal Sale”) to sell to TLLP the Martinez Crude Oil Marine Terminal (the “Martinez Terminal”) and associated pipelines for $75 million, comprised of $67.5 million in cash financed with borrowings under the TLLP Revolving Credit Facility and the issuance of equity with a combined fair value of $7.5 million. The equity issued is comprised of 206,362 common units, representing an approximate 1% limited partner interest in TLLP, and 4,212 general partner units. The Martinez Terminal consists of a single-berth dock, which has an estimated throughput capacity of approximately 145 thousand barrels per day (“Mbpd”), five associated crude oil storage tanks with a combined capacity of 425,000 barrels, two firewater tanks with 48,000 barrels of shell capacity and related pipelines that receive crude oil from third-party vessels for delivery to our Martinez refinery and a third-party terminal.

As of June 30, 2012, we owned a 52% interest in TLLP, including the 2% general partner interest. We are TLLP’s primary beneficiary; therefore we consolidate TLLP into our financial results. Our interest includes 511,252 common units, 15,254,890 subordinated units and 626,861 general partner units as of June 30, 2012. All intercompany transactions with TLLP are eliminated in our consolidated balances.

TLLP generates revenue by charging fees for gathering, transporting and storing crude oil and for terminalling, transporting and storing refined products. We do not provide financial or equity support through any liquidity arrangements and/or financial guarantees to TLLP.

TLLP provides us with various pipeline transportation, trucking, terminal distribution and storage services under various long-term, fee-based commercial agreements expiring 2016 through 2022, including a 10- year use and throughput agreement that was entered into in connection with the Martinez Terminal Sale. Under this agreement, we are obligated to transport an average of at least 65 Mbpd of crude oil per month at a throughput and tankage fee of $0.55 per barrel. Each of the agreements with TLLP contain minimum volume commitments with the exception of the Salt Lake City storage and transportation services agreement. Each agreement, with the exception of the trucking transportation agreement, has fees that are indexed for inflation and provides us with options to renew for two additional five-year terms. The fees under the trucking transportation agreement are adjusted annually as a result of a competitive bidding process, and the agreement will renew automatically for onefive-year term unless earlier terminated by us or TLLP.

In April 2011, weentered into an omnibus agreement, which among other things, addresses the payment of an annual fee to us, initially in the amount of $2.5 million, for the provision of various general and administrative services provided to TLLP. We amended and restated the omnibus agreement (“Amended Omnibus Agreement”) in connection with the Martinez Terminal Sale. Under the Amended Omnibus Agreement, TLLP reimburses us for the provision of certain operational services in support of their pipelines, terminals and storage facility. Additional sales of assets from the Company and its affiliates to TLLP, including the assets in the Martinez Terminal Sale, are governed by the Amended Omnibus Agreement. The fee payable to us for the provision of various general and administrative services under the Amended Omnibus Agreement did not change.

Effective March 30, 2012, TLLP amended its senior secured revolving credit agreement (“TLLP Revolving Credit Facility”) with a syndicate of banks and financial institutions. TLLP is an excluded subsidiary under our Revolving Credit Facility. For additional information regarding our credit facilities and the TLLP Revolving Credit Facility amendment, see Note G.

TLLP is a consolidated variable interest entity. With the exception of affiliate balances, which are eliminated in consolidation, and their impact on equity, the TLLP condensed combined consolidated balance sheets as of June 30, 2012 and December 31, 2011, as presented below, are included in the condensed consolidated balance sheets of Tesoro Corporation.

	June 30, 2012		December 31, 2011 (a)
	(In millions)
ASSETS
Cash and cash equivalents	$	21	$	18
Receivables, less allowance for doubtful accounts
Trade	1		1
Affiliate	9		11
Prepayments and other current assets	1		1
Net Property, Plant and Equipment	181		174
Other Noncurrent Assets	2		3
Total Assets	$	215	$	208
LIABILITIES AND EQUITY
Accounts payable
Trade	$	8	$	6
Affiliate	3		3
Deferred revenue - affiliate	2		2
Accrued liabilities	1		2
Other noncurrent liabilities	—		3
Debt	118		50
Equity	83		142
Total Liabilities and Equity	$	215	$	208

________________

(a) Adjusted to include the historical results of the Martinez Terminal.

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Condensed Consolidated Balance Sheets Condensed Consolidated Balance Sheets (Unaudited) (Parentheticals) (USD $)	Jun. 30, 2012	Dec. 31, 2011
TESORO CORPORATION STOCKHOLDERS' EQUITY
Common stock, par value (par value)	$ 0.167	$ 0.167
Common stock, authorized shares (shares)	200,000,000	200,000,000
Common stock, shares issued (shares)	151,701,485	150,733,991
Preferred stock, no par value (par value)	$ 0	$ 0
Preferred stock, authorized shares (shares)	5,000,000	5,000,000
Preferred stock, shares issued (shares)	0	0
Treasury stock, common shares (shares)	11,906,780	10,769,510

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Stock-Based Compensation (Notes)

6 Months Ended

Jun. 30, 2012

Share-based Compensation [Abstract]

STOCK-BASED COMPENSATION

STOCK-BASED COMPENSATION

Stock-based compensation expense (credit) included in our condensed statements of consolidated operations was as follows (in millions):    

	Three Months Ended						Six Months Ended
	June 30,						June 30,
	2012			2011			2012		2011
Market stock units	$	3		$	1		$	6	$	1
Performance share awards	2			1			4		1
Stock appreciation rights	(9		)	(13		)	3		22
Other stock-based awards	4			(2		)	8		11
Total Stock-Based Compensation Expense (Credit)	$	—		$	(13	)	$	21	$	35

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 $1 million and $6 million expense for the three months ended June 30, 2012 and 2011, respectively, and a benefit of $7 million and $12 million for the six months ending June 30, 2012 and 2011, respectively. The income tax benefit recognized from tax deductions resulting from exercises and vestings under all of our stock-based compensation arrangements totaled $4 million and $5 million for the three months ended June 30, 2012 and 2011, respectively, and $14 million and $15 million for the six months ended June 30, 2012 and 2011, respectively.

Market Stock Units

We granted market stock units under the 2011 Plan in February 2012. These market stock units represent the right to receive a target number of shares that will vest at the end of a three-year performance period. The number of shares ultimately issued will be based on Tesoro's stock price changes over the performance period. The market stock units' potential payout can range from 50-200% of targeted award value, unless the average closing stock price at vesting has decreased more than 50% from the average closing stock price at the grant date, then no market stock units will be paid out. The fair value of each market stock unit is estimated on the grant date using a Monte Carlo simulation model. The estimated fair value of these market stock units is amortized over a three-year vesting period using the straight-line method. As of June 30, 2012, the estimated weighted average payout percentage for these awards was 94%. Total unrecognized compensation cost related to non-vested market stock units totaled $25 million as of June 30, 2012, which is expected to be recognized over a weighted average period of 2.4 years.

A summary of our market stock unit award activity, assuming a 100% payout, is set forth below (units in thousands):

	Number of Units		Weighted Average Grant-Date Fair Value		Intrinsic Value
					(In millions)
Non-vested at January 1, 2012	424		$	34.22	$	9
Granted	665		$	33.93
Forfeited	(25	)	$	34.18
Non-vested at June 30, 2012	1,064		$	34.04	$	25

Performance Share Awards

Performance Conditions

We granted performance condition performance share awards under the 2011 Plan in February 2012. The vesting percentages of these equity awards, range from 0-200%, and are tied to performance conditions over a three-year period. These performance share awards represent the right to receive a target number of shares that will vest at the end of the performance period and be issued within two and one-half months of the vesting date. The fair value of performance share awards tied to performance measures is estimated using the market price of our common stock on the grant date. The estimated fair value of these performance share awards is amortized over a three-year vesting period using the straight-line method. The value of the award ultimately paid will be based on return on capital employed, which is measured against the performance peer group.

Market Conditions

We granted market condition performance share awards under the 2011 Plan in February 2012. The vesting percentages of these equity awards, range from 0-200%, and are tied to market conditions over a three-year performance period. These performance share awards represent the right to receive a target number of shares that will vest at the end of the performance period and be issued within two and one-half months of the vesting date. The fair value of each performance share award is estimated using a Monte Carlo simulation model and is estimated at the end of each reporting period. The estimated fair value of these performance share awards is amortized over a three-year vesting period using the straight-line method. The value of the award ultimately paid will be based on relative total shareholder return, which is measured against the performance peer group and the S&P 500 Index.

Total unrecognized compensation cost related to all non-vested performance share awards totaled $14 million as of June 30, 2012, which is expected to be recognized over a weighted average period of 2.3 years. As of June 30, 2012, the estimated weighted average payout percentage for these awards was approximately 60%. A summary of all performance share award activity, assuming a 100% payout, is set forth below (shares in thousands):

	Number of Shares		Weighted Average Grant-Date Fair Value
Non-vested at January 1, 2012	274		$	31.53
Granted	380		$	30.98
Forfeited	(3	)	$	31.90
Non-vested at June 30, 2012	651		$	31.20

Stock Appreciation Rights

A stock appreciation right (“SAR”) entitles an employee to receive cash in an amount equal to the excess of the fair market value of one share of common stock on the date of exercise over the grant price of the SAR. The fair value of each SAR is estimated at the end of each reporting period using the Black-Scholes option-pricing model. We have not granted any SARs since 2010. We paid cash of $9 million to settle approximately 0.7 million SARs that were exercised during the six months ended June 30, 2012. We had $49 million and $55 million recorded in accrued liabilities associated with our SARs awards at June 30, 2012 and December 31, 2011, respectively.

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Document and Entity Information	6 Months Ended
	Jun. 30, 2012	Jul. 30, 2012
Document and Entity Information [Abstract]
Entity Registrant Name	TESORO CORP /NEW/
Entity Central Index Key	0000050104
Document Type	10-Q
Document Period End Date	Jun. 30, 2012
Amendment Flag	false
Document Fiscal Year Focus	2012
Document Fiscal Period Focus	Q2
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		139,795,520

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Operating Segments (Notes)

6 Months Ended

Jun. 30, 2012

Segment Reporting [Abstract]

OPERATING SEGMENTS

OPERATING SEGMENTS

The Company's revenues are derived from two operating segments, refining and retail. We own and operate seven petroleum refineries located in California, Washington, Alaska, Hawaii, North Dakota and Utah. These refineries 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, at wholesale through terminal facilities and other locations. Our refining segment also sells refined products to unbranded marketers and occasionally exports refined products to foreign markets. Our retail segment sells gasoline, diesel fuel and convenience store items through company-operated retail stations and branded jobber/dealers in 18 states. We do not have significant operations in foreign countries. Therefore, revenue 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. Intersegment sales from refining to retail are made at prevailing market rates. Income taxes, other income, foreign currency exchange loss, interest and financing costs, interest income, corporate depreciation and corporate general and administrative expenses are excluded from segment operating income. Identifiable assets are those used by the segments, whereas corporate assets are principally cash and other assets that are not associated with a specific operating segment.

Segment information is as follows:

	Three Months Ended						Six Months Ended
	June 30,						June 30,
	2012			2011			2012			2011
Revenues	(In millions)
Refining:
Refined products	$	7,780		$	7,635		$	15,342		$	13,905
Crude oil resales and other	135			186			291			341
Retail:
Fuel (a)	1,507			1,354			2,813			2,469
Merchandise and other	63			57			118			109
Intersegment sales from Refining to Retail	(1,380		)	(1,269		)	(2,639		)	(2,335		)
Total Revenues	$	8,105		$	7,963		$	15,925		$	14,489
Segment Operating Income
Refining (b)	$	645		$	399		$	836		$	702
Retail	74			38			70			40
Total Segment Operating Income	719			437			906			742
Corporate and unallocated costs	(38		)	(18		)	(91		)	(104		)
Operating Income (c)	681			419			815			638
Interest and financing costs	(34		)	(60		)	(70		)	(103		)
Other expense, net (d)	(18		)	—			(17		)	—
Foreign currency exchange loss	(1		)	(2		)	(1		)	(1		)
Earnings Before Income Taxes	$	628		$	357		$	727		$	534
Depreciation and Amortization Expense
Refining	$	94		$	94		$	185		$	185
Retail	9			10			19			19
Corporate	6			2			8			5
Total Depreciation and Amortization Expense	$	109		$	106		$	212		$	209
Capital Expenditures
Refining	$	121		$	55		$	212		$	93
Retail	24			4			32			7
Corporate	3			4			6			5
Total Capital Expenditures	$	148		$	63		$	250		$	105

______________

(a) Federal and state motor fuel taxes on sales by our retail segment are included in both revenues and cost of sales in our condensed statements of consolidated operations. These taxes, excluding credits, totaled $112 million and $92 million for the three months ended June 30, 2012 and 2011, respectively, and $211 million and $183 million for the six months ended June 30, 2012 and 2011, respectively.

(b) Includes impairment charges related to the change in scope of a capital project at our Wilmington refinery of $48 million for the three and six months ended June 30, 2011.

(c) Includes $37 million in business interruption and property damage recoveries for the three and six months ended June 30, 2011.

(d) Includes accruals related to certain legal matters partially offset by receipts associated with the settlement of a pipeline rate proceeding for the three and six months ended June 30, 2012.

	June 30,		December 31,
	2012		2011
Identifiable Assets:
Refining	$	8,143	$	8,152
Retail	733		644
Corporate	1,532		1,096
Total Assets	$	10,408	$	9,892

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Condensed Statements of Consolidated Operations and Comprehensive Income (Unaudited) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 30, 2012		Jun. 30, 2011		Jun. 30, 2012		Jun. 30, 2011
Income Statement [Abstract]
REVENUES (a)	$ 8,105		$ 7,963		$ 15,925		$ 14,489
COSTS AND EXPENSES:
Cost of sales (a)	6,885		6,985		14,053		12,720
Operating expenses	377		372		724		743
Selling, general and administrative expenses	47		27		109		122
Depreciation and amortization expense	109		106		212		209
Loss on asset disposals and impairments	6		54		12		57
OPERATING INCOME	681	[1]	419	[1]	815	[1]	638	[1]
Interest and financing costs	(34)		(60)		(70)		(103)
Other expense, net	(18)	[2]	0	[2]	(17)	[2]	0	[2]
Foreign currency exchange loss	(1)		(2)		(1)		(1)
EARNINGS BEFORE INCOME TAXES	628		357		727		534
Income tax expense	235	[3]	135	[4]	272	[4]	205	[3]
NET EARNINGS	393		222		455		329
Less net income attributable to noncontrolling interest	6		4		12		4
NET EARNINGS ATTRIBUTABLE TO TESORO CORPORATION	387		218		443		325
NET EARNINGS PER SHARE:
Basic (dollars per share)	$ 2.77		$ 1.54		$ 3.18		$ 2.29
Diluted (dollars per share)	$ 2.75		$ 1.52		$ 3.14		$ 2.26
WEIGHTED AVERAGE COMMON SHARES:
Basic (shares)	139.6		142.6		139.5		142.1
Diluted (shares)	140.5		144.4		141.2		144.2
COMPREHENSIVE INCOME
Total comprehensive income	393		222		455		329
Less noncontrolling interest in comprehensive income	6		4		12		4
COMPREHENSIVE INCOME ATTRIBUTABLE TO TESORO CORPORATION	387		218		443		325
SUPPLEMENTAL INFORMATION:
(a) Includes excise taxes collected by our retail segment (excluding credits)	$ 112		$ 92		$ 211		$ 183

[1] Includes $37 million in business interruption and property damage recoveries for the three and six months ended June 30, 2011.

[2] Includes accruals related to certain legal matters partially offset by receipts associated with the settlement of a pipeline rate proceeding for the three and six months ended June 30, 2012.

[3] 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.

[4] 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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Debt (Notes)

6 Months Ended

Jun. 30, 2012

Debt Disclosure [Abstract]

DEBT

DEBT

Our total debt at June 30, 2012 and December 31, 2011, was comprised of the following (in millions):

Debt, including current maturities:	June 30, 2012		December 31, 2011
Tesoro Corporation Revolving Credit Facility	$	—	$	—
Tesoro Panama Company S.A. (“TPSA”) Revolving Credit Facility	50		117
TLLP Revolving Credit Facility	118		50
6¼% Senior Notes Due 2012	299		299
65/8% Senior Notes Due 2015	450		450
6½% Senior Notes Due 2017	473		473
9¾% Senior Notes Due 2019 (net of unamortized discount of $9 million)	291		291
Capital Lease Obligations and Other	21		21
Total Debt	$	1,702	$	1,701

For additional information regarding our outstanding debt, see “Capital Resources and Liquidity” in Management's Discussion and Analysis of Financial Condition and Results of Operations in Item 2.

Credit Facilities Overview

As of June 30, 2012, our credit facilities were subject to the following expenses and fees:

Credit Facility	30 day Eurodollar (LIBOR) Rate	Eurodollar Margin	Base Rate	Base Rate Margin	Commitment Fee (unused portion)
Tesoro Corporation Revolving Credit Facility ($1.85 billion) (a)	0.25%	1.75%	3.25%	0.75%	0.375%
TPSA Revolving Credit Facility ($500 million) (a)	0.25%	2.75%	3.25%	1.75%	N/A
TLLP Revolving Credit Facility ($300 million) (a)	0.25%	2.50%	3.25%	1.50%	0.50%

________________

(a) We have the option to elect if the borrowings will bear interest at either a base rate plus the base rate margin, or a Eurodollar rate, for the applicable period, plus, the Eurodollar margin at the time of the borrowing. Letters of credit outstanding under the Tesoro Corporation Revolving Credit Facility and the TPSA Revolving Credit Facility incur fees at the Eurodollar margin rate and the base rate margin, respectively.

Tesoro Corporation Revolving Credit Facility (“Revolving Credit Facility”)

The Revolving Credit Facility is guaranteed by substantially all of Tesoro’s active domestic subsidiaries, excluding Tesoro Logistics GP (“TLGP”) and TLLP and its subsidiaries, and is secured by substantially all of the crude oil and refined product inventories, cash and receivables of Tesoro's active domestic subsidiaries. TPSA is also not a guarantor of the Revolving Credit Facility. For additional information regarding TLLP, see Note B.

At June 30, 2012, our Revolving Credit Facility provided for borrowings (including letters of credit) up to the lesser of the amount of a periodically adjusted borrowing base of approximately $3.0 billion, consisting of Tesoro’s eligible cash and cash equivalents, receivables and petroleum inventories, net of the standard reserve as defined, or the Revolving Credit Facility’s total capacity of $1.85 billion. The total available capacity can be increased up to an aggregate amount of $2.25 billion, subject to receiving increased commitments. In June 2012, we amended the Revolving Credit Facility agreement to provide for the application of certain credit enhancements to transfer the credit risk associated with certain commercial trade receivables. As of June 30, 2012, we had no borrowings and $904 million in letters of credit outstanding under the Revolving Credit Facility, resulting in total unused credit availability of approximately $946 million or 51% of the eligible borrowing base.

Our committed Revolving Credit Facility is scheduled to mature on March 16, 2016. The Revolving Credit Facility will terminate if the Company does not refinance or pay in full, the Company's 6 1/4% Senior Notes due November 2012 on or prior to the stated maturity date, or refinance or pay in full, the Company's 6 5/8% Senior Notes due November 2015 on or prior to the stated maturity date.

Our Revolving Credit Agreement and senior notes each limit our restricted payments (as defined) including our ability to pay cash dividends, repurchase stock or make voluntary repayments 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 our subsidiaries ability to make certain payments and distributions.

Letter of Credit Agreements

The Revolving Credit Facility allows us to obtain letters of credit under separate letter of credit agreements for foreign crude oil purchases. As of June 30, 2012, our four separate uncommitted letter of credit agreements had $541 million outstanding. Letters of credit outstanding under these agreements incur fees 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.

TPSA Revolving Credit Facility

TPSA, a directly and wholly owned subsidiary of Tesoro, entered into a 364-day uncommitted, secured revolving credit agreement in October 2011. TPSA is an unrestricted subsidiary under our outstanding indentures. The TPSA Revolving Credit Facility is non-recourse to Tesoro and is guaranteed by TPSA’s assets. The TPSA Revolving Credit Facility includes two uncommitted facilities, which provide for revolving borrowings, swing line loans and daylight overdraft loans and letters of credit.

The maximum capacity of these facilities as of June 30, 2012, was $500 million, consisting of $350 million under the first facility and $150 million under the second facility. Our total capacity under the TPSA facilities can be further increased up to $700 million provided the facilities' maximum amounts do not exceed $550 million and $350 million, respectively. At June 30, 2012, our TPSA Revolving Credit Facility provided for borrowings (including letters of credit) up to the lesser of the amount of a periodically adjusted borrowing base that consists of TPSA's eligible receivables and petroleum inventories, net of reserves, or the agreement's capacity based on the net worth of TPSA. We had $50 million in borrowings outstanding under this agreement and no letters of credit outstanding at June 30, 2012.

TLLP Revolving Credit Facility

TLLP amended the TLLP Revolving Credit Facility effective March 30, 2012. Concurrent with the execution of the amendment, and pursuant to the terms of the original agreement, TLLP exercised its option to increase the total loan availability under the TLLP Credit Agreement from $150 million to an aggregate of $300 million. The amendment allows TLLP to request that the availability be increased up to an aggregate of $450 million, subject to receiving increased commitments from the lenders, compared to the original agreement, which allowed an aggregate capacity of $300 million. As of June 30, 2012, TLLP had $118 million in borrowings outstanding under this facility.

The TLLP Revolving Credit Facility is non-recourse to Tesoro, except for TLGP, and is guaranteed by all of TLLP’s subsidiaries and secured by substantially all of TLLP’s assets. Borrowings are available under the TLLP Revolving Credit Facility up to the total available revolving capacity of the facility. The TLLP Revolving Credit Facility is scheduled to mature on April 25, 2014.

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Derivative Instruments (Notes)

6 Months Ended

Jun. 30, 2012

Derivative Instruments and Hedges, Assets [Abstract]

DERIVATIVE INSTRUMENTS

DERIVATIVE INSTRUMENTS

The timing, direction and overall change in refined product prices versus crude oil prices impacts profit margins and has a significant impact on our earnings and cash flows. Consequently, we use non-trading derivative instruments to manage exposure to commodity price risks associated with the purchase or sale of feedstocks, refined products and energy supplies to or from the Company’s refineries, terminals, retail operations and customers. We also use non-trading derivative instruments to manage price risks associated with inventories above or below our target levels. To achieve our objectives, we use derivative instruments such as Options, Futures Contracts, OTC Swap Contracts, OTC Option Contracts and Forward Contracts, all generally with maturity dates of less than 18 months. We believe that there is minimal credit risk with respect to our counterparties.

We may use our excess storage capacity in Panama to take advantage of contango markets when the future price of crude oil is higher than the current spot price. We use commodity derivatives to manage price risk and hedge crude oil held in connection with these arbitrage opportunities.

We are exposed to exchange rate fluctuations on our purchases of Canadian crude oil. We enter into forward contracts of Canadian dollars to manage monthly exchange rate fluctuations.

The accounting for changes in the fair value of a commodity derivative depends on whether the derivative has been designated in a hedging relationship and whether we have elected the normal purchases and normal sales exception. The accounting for the change in fair value can be summarized as follows:

Derivative Treatment	Accounting Method
Normal purchases and normal sales exception	Accrual accounting
Designated in qualifying hedging relationship	Hedge accounting
All other derivatives	Mark-to-market accounting

The primary derivative instruments that we use have the following characteristics. Option contracts provide the right, but not the obligation to buy or sell the commodity at a specified price in the future. Futures Contracts include a requirement to buy or sell the commodity at a fixed price in the future. OTC Swap Contracts, OTC Option Contracts and Forward Contracts require cash settlement for the commodity based on the difference between a fixed or floating price and the market price on the settlement date. Certain of these contracts require cash collateral if our liability position exceeds specified thresholds. At June 30, 2012, we had no cash collateral outstanding related to our OTC Swap Contracts.

The following table presents the fair value (in millions) of our derivative instruments as of June 30, 2012 and December 31, 2011. 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 have elected to offset the recognized fair value amounts for multiple derivative instruments executed with the same counterparty in our financial statements. As a result, the asset and liability amounts below will not agree with the amounts presented in our condensed consolidated balance sheets.

		Derivative Assets						Derivative Liabilities
	Balance Sheet Location	June 30, 2012			December 31, 2011			June 30, 2012			December 31, 2011
Mark-to-Market Derivatives (a):
Commodity Futures Contracts	Prepayments and other current assets	$	592		$	95		$	602		$	136
Commodity OTC Swap Contracts	Receivables	3			1			—			—
Commodity OTC Swap Contracts	Accounts payable	—			2			3			3
Commodity Forward Contracts	Receivables	6			4			—			—
Commodity Forward Contracts	Accounts payable	—			—			—			1
Total Gross Mark-to-Market Derivatives		601			102			605			140
Less: Counterparty Netting and Cash Collateral (b)		(575		)	(63		)	(596		)	(138		)
Total Net Fair Value of Derivatives		$	26		$	39		$	9		$	2

________________

(a) The above fair values are presented as gross amounts, including when the derivatives are subject to master netting arrangements and qualify for net presentation in the condensed consolidated balance sheet.

(b) As of June 30, 2012 and December 31, 2011, cash collateral amounts of $21 million and $75 million, respectively, are being netted with mark-to-market commodity future contracts.

Gains (losses) for our mark-to market derivatives for the three and six months ended June 30, 2012 and 2011, were as follows (in millions):

	Three Months Ended						Six Months Ended
	June 30,						June 30,
Mark-to-Market Derivatives:	2012			2011			2012			2011
Commodity Futures Contracts	$	50		$	88		$	38		$	32
Commodity OTC Swap Contracts	—			2			(6		)	1
Commodity Forward Contracts	6			(8		)	3			(1		)
Foreign Currency Forward Contracts	(2		)	(2		)	(1		)	(1		)
Total Mark-to-Market Derivatives	$	54		$	80		$	34		$	31

The income statement location of gains (losses) for our mark-to market derivatives above were as follows (in millions):

	Three Months Ended						Six Months Ended
	June 30,						June 30,
Income Statement Location:	2012			2011			2012			2011
Revenues	$	31		$	12		$	21		$	—
Cost of sales	25			70			14			32
Foreign currency exchange loss	(2		)	(2		)	(1		)	(1		)
Total Gain on Mark-to-Market Derivatives	$	54		$	80		$	34		$	31

Gains (losses) on our derivatives designated for hedge accounting during the three and six months ended June 30, 2012, were as follows (in millions):

	Three Months Ended					Six Months Ended
	June 30,					June 30,
Derivatives Designated for Hedge Accounting:	2012		2011			2012		2011
Commodity Futures Contracts (a):
Recognized in Income on Derivatives	$	—	$	4		$	—	$	3
Recognized in Income on Hedged Item	—		(4		)	—		(4		)
Recognized in Income on Ineffective Portion of Derivative (b)	$	—	$	—		$	—	$	(1	)

________________

(a) Losses recognized in income on the derivative and the hedged item are included in cost of sales in the statements of condensed consolidated operations.

(b) For fair value hedges, no component of the derivative instruments’ gains or losses was excluded from the assessment of hedge effectiveness. No amounts were recognized in income for hedged firm commitments that no longer qualify as fair value hedges.

Open Long (Short) Positions

All of our open positions are scheduled to mature within 18 months. As of June 30, 2012, we had open forward contracts to purchase CAD $52 million and CAD $26 million that mature on July 25, 2012 and August 24, 2012, respectively. We did not have any open contract volumes designated for fair value hedge accounting as of June 30, 2012.

The information below presents the net volume of outstanding commodity contracts by type of instrument and year of maturity as of June 30, 2012 (volumes in thousands of barrels):

Mark-to-Market Derivatives
Derivative instrument and Year of maturity	Long (Short) Contract Volumes
Futures
2012	(1,075)
2013	(283)
Forwards
2012	(1,499)
Options
2012	25

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Fair Value Measurements (Policies)

6 Months Ended

Jun. 30, 2012

Fair Value Disclosures [Abstract]

Fair Value of Financial Instruments, Policy

We classify financial assets and financial liabilities into the following fair value hierarchy:

• level 1 - quoted prices in active markets for identical assets and liabilities;

• level 2 - quoted prices for similar assets and liabilities in active markets, and inputs other than quoted prices that are observable for the asset or liability; and

• level 3 - unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities.

We measure fair value using level 1 inputs, when available, because they provide the most reliable evidence of fair value. Derivative instruments and our Renewable Identification Numbers (“RINs”) are our only financial assets and financial liabilities measured at fair value on a recurring basis.

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Acquisition (Notes)

6 Months Ended

Jun. 30, 2012

Business Combination, Description [Abstract]

AQUISITION

ACQUISITION

Retail Acquisition

In January 2012, we acquired 49 retail stations located primarily in Washington, Oregon, California, Nevada, Idaho, Utah and Wyoming, from SUPERVALU, Inc. We paid approximately $37 million for the assets, including inventories of approximately $3 million. We assumed the obligations under the seller's leases and other agreements arising after the closing date. SUPERVALU, Inc. retained certain pre-closing liabilities, including environmental matters. We have spent approximately $4 million to replace the dispensers at these stations. Pro forma information has not been presented for the acquisition as it is not material to our condensed consolidated financial statements.

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Commitments and Contingencies (Notes)

6 Months Ended

Jun. 30, 2012

Commitments and Contingencies Disclosure [Abstract]

COMMITMENTS AND CONTINGENCIES

COMMITMENTS AND CONTINGENCIES

Environmental and Tax 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 insurance or other third-party recoveries.

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.

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. We believe that resolution of any such claim(s) would not have a material impact on our financial position, results of operations and liquidity. We do not expect our unrecognized tax benefits to change significantly over the next twelve months.

Environmental Liabilities

We are incurring and expect to continue to incur expenses for environmental 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. 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 $91 million and $93 million at June 30, 2012 and December 31, 2011, respectively. These accruals include $55 million for both periods, related to environmental liabilities for site cleanup activities assumed from a prior owner, arising from operations at our Martinez refinery prior to August 2000. Certain projects at the Martinez refinery are subject to a cost-share agreement where we are responsible for 75% of the expenditures. Approximately $45 million of our obligations are related to this agreement. We cannot reasonably determine the full extent of remedial activities that may be required at the Martinez refinery. Therefore, it is possible that we will identify additional investigation and remediation costs as more information becomes available. We have filed insurance claims under environmental insurance policies that provide coverage up to $190 million for expenditures in excess of $50 million in self-insurance, but the insurer has challenged coverage and filed a declaratory relief action in federal court. We have not recognized possible insurance recoveries related to this matter.

We have investigated conditions at certain active wastewater treatment units at our Martinez refinery.  The investigation was driven by an order received in 2004 from the San Francisco Bay Regional Water Quality Control Board. The order named us as well as two previous owners of the Martinez refinery.  We cannot currently estimate the amount of the ultimate resolution of the order, but we believe it will not have a material adverse impact on our financial position, results of operations or liquidity.

Washington Refinery Fire

The naphtha hydrotreater unit at our Washington refinery was involved in a fire in April 2010, which fatally injured seven employees and rendered the unit inoperable. The Washington State Department of Labor & Industries (“L&I”), the U.S. Chemical Safety and Hazard Investigation Board (“CSB”) and the EPA initiated separate investigations of the incident. L&I completed its investigation in October 2010, issued citations and assessed a $2.4 million fine, which we appealed. L&I reassumed jurisdiction of the citation and affirmed the allegations in December 2010. We disagree with L&I's characterizations of operations at our Washington refinery and believe, based on available evidence and scientific reviews, that many of the agency's conclusions are mistaken. We filed an appeal of the citation in January 2011. The EPA and CSB investigations are ongoing.

In July 2012, we settled all claims brought by the estates and families of the seven fatally injured employees and a third-party truck driver arising from the April 2010 incident at our Washington refinery (Donald and Peggy Zimmerman et al. v. Tesoro Corporation and Tesoro Refining and Marketing et al.).  The resolution of this matter did not have a material impact on our financial position, results of operations or liquidity.

Our business interruption insurance deductible was satisfied after we exceeded both 60 days of operational disruption and $25 million in losses primarily based on the operating plan that existed prior to the incident. We have filed business interruption insurance claims and collected $87 million in business interruption insurance recoveries in 2010 and 2011. As of June 30, 2012, certain business interruption claims remain open.

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. On the basis of existing information, we believe that the resolution of these matters, individually or in the aggregate, will not have a material adverse 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.

Legal

We are a defendant, along with other manufacturing, supply and marketing defendants, in two remaining lawsuits alleging methyl tertiary butyl ether (“MTBE”) contamination in groundwater. The defendants are being sued for having manufactured MTBE and having manufactured, supplied and distributed gasoline containing MTBE. The plaintiffs in the remaining cases, all in California, are municipalities and governmental authorities. The plaintiffs allege, in part, that the defendants are liable for manufacturing or distributing a defective product. The suits generally seek individual, unquantified compensatory and punitive damages and attorney's fees. We intend to vigorously assert our defenses against these claims. While we cannot currently estimate the amount or timing of the resolution of these matters, we have established an accrual for these matters and believe that the outcome will not have a material impact on our financial position, results of operations or liquidity.

During 2009, Chevron filed a lawsuit against us claiming they are entitled to a share of the refunds we received in 2008 from the owners of the Trans Alaska Pipeline System (“TAPS”). We received $50 million in 2008, net of contingent legal fees, for excessive intrastate rates charged by TAPS during 1997 through 2000, and the period of 2001 through June 2003. Chevron is asserting that it is entitled to a share of its portion of the refunds for retroactive price adjustments under our previous crude oil contracts with them. The trial court judge granted Chevron's motion for summary judgment and awarded them $16 million, including interest in September 2010. We disagree with the trial court and have appealed the decision to the Alaska Supreme Court, in which the proceeding is now pending. We have established an accrual for this matter and believe that the outcome will not have a material impact on our financial position, results of operations or liquidity.

Environmental

The EPA has alleged that we have violated certain Clean Air Act regulations at our Alaska, Washington, Martinez, Hawaii and Utah refineries. We are continuing discussions of the EPA’s claims with the EPA and the U.S. Department of Justice (“DOJ”). We previously received a notice of violation (“NOV”) in March 2011 from the EPA alleging violations of Title V of the Clean Air Act at our Alaska refinery. The alleged violations in the NOV arise from a 2007 state of Alaska inspection and inspections by the EPA in 2008 and 2010. We also previously received NOV’s in 2005 and 2008 alleging violations of the Clean Air Act at our Washington refinery. We are evaluating all of these allegations. The ultimate resolution of these matters could require us to incur material capital expenditures and/or civil penalties. While we cannot currently estimate the amount or timing of the resolution of these matters, and currently believe that the outcome of these matters will not have a material impact on our liquidity or financial position, the ultimate resolution could have a material impact on our interim or annual results of operations.

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Stock-Based Compensation, Summary of Stock-Based Compensation Expense (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Stock-Based Compensation Arrangement by Stock-based Payment Award
Stock-based compensation expense (credit)	$ 0	$ (13)	$ 21	$ 35
Income tax effect for stock-based compensation arrangements	(1)	(6)	7	12
Tax benefit realized from exercise of stock-based compensation arrangements	4	5	14	15
Market stock units
Stock-Based Compensation Arrangement by Stock-based Payment Award
Stock-based compensation expense (credit)	3	1	6	1
Performance share awards
Stock-Based Compensation Arrangement by Stock-based Payment Award
Stock-based compensation expense (credit)	2	1	4	1
Stock appreciation rights
Stock-Based Compensation Arrangement by Stock-based Payment Award
Stock-based compensation expense (credit)	(9)	(13)	3	22
Other stock-based awards
Stock-Based Compensation Arrangement by Stock-based Payment Award
Stock-based compensation expense (credit)	$ 4	$ (2)	$ 8	$ 11

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Property, Plant and Equipment (Notes)

6 Months Ended

Jun. 30, 2012

Property, Plant and Equipment [Abstract]

PROPERTY, PLANT AND EQUIPMENT

PROPERTY, PLANT AND EQUIPMENT

Property, plant and equipment, at cost, is as follows (in millions):

	June 30, 2012			December 31, 2011
Refining	$	6,364		$	6,161
Retail	734			679
Corporate	221			215
Property, plant and equipment, at cost	7,319			7,055
Accumulated depreciation	(2,031		)	(1,907		)
Net property, plant and equipment	$	5,288		$	5,148

We capitalize interest as part of the cost of major projects during the construction period. Capitalized interest totaled $4 million and $3 million for the three months ended June 30, 2012 and 2011, respectively, and $8 million and $7 million for the six months ended June 30, 2012 and 2011, respectively, and is recorded as a reduction to interest and financing costs.

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Benefit Plans (Notes)

6 Months Ended

Jun. 30, 2012

Compensation and Retirement Disclosure [Abstract]

BENEFIT PLANS

BENEFIT PLANS

Tesoro sponsors the following four defined benefit pension plans: the funded qualified employee retirement plan, the unfunded nonqualified executive security plan, the unfunded nonqualified restoration retirement plan and the unfunded nonqualified supplemental executive retirement plan. Although our funded employee retirement plan fully meets all funding requirements under applicable laws and regulations, we voluntarily contributed $24 million during the six months ended June 30, 2012 to improve the funded status of the plan.

The components of pension benefit expense and other postretirement benefit expense (income) included in the condensed statements of consolidated operations for the three and six months ended June 30, 2012 and 2011, were (in millions):

	Pension Benefits
	Three Months Ended						Six Months Ended
	June 30,						June 30,
	2012			2011			2012			2011
Service cost	$	7		$	7		$	14		$	14
Interest cost	8			8			15			15
Expected return on plan assets	(6		)	(5		)	(12		)	(10		)
Recognized net actuarial loss	5			5			11			10
Recognized curtailment loss	—			1			—			3
Net Periodic Benefit Expense	$	14		$	16		$	28		$	32
	Other Postretirement Benefits
	Three Months Ended						Six Months Ended
	June 30,						June 30,
	2012			2011			2012			2011
Service cost	$	1		$	2		$	2		$	3
Interest cost	1			1			2			2
Amortization of prior service credit	(10		)	(10		)	(19		)	(19		)
Recognized net actuarial loss	3			3			6			6
Net Periodic Benefit Income	$	(5	)	$	(4	)	$	(9	)	$	(8	)

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Stockholders' Equity (Notes)

6 Months Ended

Jun. 30, 2012

Stockholders' Equity Attributable to Parent [Abstract]

STOCKHOLDERS' EQUITY

STOCKHOLDERS' EQUITY

See Note L for information relating to stock-based compensation. Changes to equity during the six months ended June 30, 2012, are presented below:

	Tesoro Corporation Stockholders' Equity			Noncontrolling Interest			Total Equity
Balance at December 31, 2011	$	3,668		$	310		$	3,978
Net earnings	443			12			455
Shares issued for equity-based compensation awards	15			—			15
Excess tax benefits from stock-based compensation arrangements	3			—			3
Amortization of equity settled awards	14			—			14
Purchases of common stock	(31		)	—			(31		)
Distributions to noncontrolling interest	—			(11		)	(11		)
Balance at June 30, 2012	$	4,112		$	311		$	4,423

We issued approximately 1.0 million and 1.6 million shares primarily for stock option exercises under our equity-based compensation plans during the six months ended June 30, 2012 and twelve months ended December 31, 2011, respectively. 

During 2011, our Board of Directors approved a program designed to offset the dilutive effect of future stock-based compensation awards. We purchased approximately 1.0 million shares of common stock at a weighted average price of $24.81 per share for approximately $26 million during the six months ended June 30, 2012, to offset the impact of 2012 grants under the 2011 Long-Term Incentive Plan (“2011 Plan”).

In August 2012, our Board of Directors authorized an additional $500 million share repurchase program and the initiation of a regular quarterly cash dividend of $0.12 per share. The shares will be repurchased at management's discretion in the open market. The authorization has no time limit and may be suspended or discontinued at any time. The dividend is payable on September 14, 2012 to holders of record at the close of business on August 31, 2012.

Our Revolving Credit Agreement and senior notes each limit our ability to pay cash dividends or repurchase stock. The limitation in each of our debt agreements is based on limits on restricted payments (as defined in our debt agreements), which include dividends, stock repurchases 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 our subsidiaries ability to make certain payments and distributions. We do not believe that the limitations will restrict our ability to pay dividends or repurchase stock under our current programs.

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Acquisition Aquisition (Details) (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2012	Mar. 31, 2012 stores
Business Acquisition
Number of stations		49
Cost of acquired assets		$ 37
Value of inventory acquired		3
Payments to replace dispensers at stations	$ 4

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Condensed Consolidating Financial Information, Guarantors and Non-Guarantors (Details)	6 Months Ended
	Jun. 30, 2012
Consolidating Financial Information
Subsidiary or equity method investee, cumulative percentage ownership after all transactions	100.00%
Limited partner
Consolidating Financial Information
Percentage ownership	52.00%

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Operating Segments, Results (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 30, 2012		Jun. 30, 2011		Jun. 30, 2012		Jun. 30, 2011		Dec. 31, 2011
Segment Reporting Information, Operating Income (Loss)
Total Revenues	$ 8,105		$ 7,963		$ 15,925		$ 14,489
Total Segment Operating Income	719		437		906		742
Reconciliation of Operating Income from Segments to Consolidated
OPERATING INCOME	681	[1]	419	[1]	815	[1]	638	[1]
Corporate and unallocated costs	(38)		(18)		(91)		(104)
Segment Reporting Information, Income (Loss) before Income Taxes
Interest and financing costs	(34)		(60)		(70)		(103)
Other expense, net (d)	(18)	[2]	0	[2]	(17)	[2]	0	[2]
Foreign currency exchange loss	(1)		(2)		(1)		(1)
EARNINGS BEFORE INCOME TAXES	628		357		727		534
Segment Reporting, Disclosure of Other Information about Entity's Reportable Segments
Depreciation and Amortization Expense	109		106		212		209
Capital Expenditures	148		63		250		105
Identifiable Assets	10,408				10,408				9,892
Table Footnotes
Federal and state motor fuel taxes on sales by our retail segment	112		92		211		183
Total asset impairment charges			48				48
Insurance recoveries			37				37
Refining:
Reconciliation of Operating Income from Segments to Consolidated
OPERATING INCOME	645	[3]	399	[3]	836	[3]	702	[3]
Segment Reporting, Disclosure of Other Information about Entity's Reportable Segments
Depreciation and Amortization Expense	94		94		185		185
Capital Expenditures	121		55		212		93
Identifiable Assets	8,143				8,143				8,152
Refined products
Segment Reporting Information, Operating Income (Loss)
Revenues	7,780		7,635		15,342		13,905
Crude oil resales and other
Segment Reporting Information, Operating Income (Loss)
Revenues	135		186		291		341
Retail:
Reconciliation of Operating Income from Segments to Consolidated
OPERATING INCOME	74		38		70		40
Segment Reporting, Disclosure of Other Information about Entity's Reportable Segments
Depreciation and Amortization Expense	9		10		19		19
Capital Expenditures	24		4		32		7
Identifiable Assets	733				733				644
Fuel (a)
Segment Reporting Information, Operating Income (Loss)
Revenues	1,507	[4]	1,354	[4]	2,813	[4]	2,469	[4]
Merchandise and other
Segment Reporting Information, Operating Income (Loss)
Revenues	63		57		118		109
Intersegment sales from Refining to Retail
Segment Reporting Information, Operating Income (Loss)
Intersegment sales	(1,380)		(1,269)		(2,639)		(2,335)
Corporate
Segment Reporting, Disclosure of Other Information about Entity's Reportable Segments
Depreciation and Amortization Expense	6		2		8		5
Capital Expenditures	3		4		6		5
Identifiable Assets	$ 1,532				$ 1,532				$ 1,096

[1] Includes $37 million in business interruption and property damage recoveries for the three and six months ended June 30, 2011.

[2] Includes accruals related to certain legal matters partially offset by receipts associated with the settlement of a pipeline rate proceeding for the three and six months ended June 30, 2012.

[3] Includes impairment charges related to the change in scope of a capital project at our Wilmington refinery of $48 million for the three and six months ended June 30, 2011.

[4] Federal and state motor fuel taxes on sales by our retail segment are included in both revenues and cost of sales in our condensed statements of consolidated operations. These taxes, excluding credits, totaled $112 million and $92 million for the three months ended June 30, 2012 and 2011, respectively, and $211 million and $183 million for the six months ended June 30, 2012 and 2011, respectively.

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Stock-Based Compensation (Tables)

6 Months Ended

Jun. 30, 2012

Share-based Compensation [Abstract]

Summary of Stock-based Compensation Expense

Stock-based compensation expense (credit) included in our condensed statements of consolidated operations was as follows (in millions):    

	Three Months Ended						Six Months Ended
	June 30,						June 30,
	2012			2011			2012		2011
Market stock units	$	3		$	1		$	6	$	1
Performance share awards	2			1			4		1
Stock appreciation rights	(9		)	(13		)	3		22
Other stock-based awards	4			(2		)	8		11
Total Stock-Based Compensation Expense (Credit)	$	—		$	(13	)	$	21	$	35

Summary of Market Stock Units

A summary of our market stock unit award activity, assuming a 100% payout, is set forth below (units in thousands):

	Number of Units		Weighted Average Grant-Date Fair Value		Intrinsic Value
					(In millions)
Non-vested at January 1, 2012	424		$	34.22	$	9
Granted	665		$	33.93
Forfeited	(25	)	$	34.18
Non-vested at June 30, 2012	1,064		$	34.04	$	25

Summary of Performance Share Awards

A summary of all performance share award activity, assuming a 100% payout, is set forth below (shares in thousands):

	Number of Shares		Weighted Average Grant-Date Fair Value
Non-vested at January 1, 2012	274		$	31.53
Granted	380		$	30.98
Forfeited	(3	)	$	31.90
Non-vested at June 30, 2012	651		$	31.20

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Debt, Credit Facilities Overview (Details) (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2012		Dec. 31, 2011
Tesoro Corporation Revolving Credit Facility ($1.85 billion) (a)
Credit Facility
Total Capacity	$ 1,850
30 day Eurodollar (LIBOR) Rate	0.25%	[1]
Eurodollar Margin	1.75%	[1]
Base Rate	3.25%	[1]
Base Rate Margin	0.75%	[1]
Commitment Fee (unused portion)	0.375%	[1]
TPSA Revolving Credit Facility ($500 million) (a)
Credit Facility
Total Capacity	500
30 day Eurodollar (LIBOR) Rate	0.25%	[1]
Eurodollar Margin	2.75%	[1]
Base Rate	3.25%	[1]
Base Rate Margin	1.75%	[1]
TLLP Revolving Credit Facility ($300 million) (a)
Credit Facility
Total Capacity	$ 300		$ 150
30 day Eurodollar (LIBOR) Rate	0.25%	[1]
Eurodollar Margin	2.50%	[1]
Base Rate	3.25%	[1]
Base Rate Margin	1.50%	[1]
Commitment Fee (unused portion)	0.50%	[1]

[1] We have the option to elect if the borrowings will bear interest at either a base rate plus the base rate margin, or a Eurodollar rate, for the applicable period, plus, the Eurodollar margin at the time of the borrowing. Letters of credit outstanding under the Tesoro Corporation Revolving Credit Facility and the TPSA Revolving Credit Facility incur fees at the Eurodollar margin rate and the base rate margin, respectively.

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Basis of Presentation (Policies)

6 Months Ended

Jun. 30, 2012

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 of assets and liabilities and disclosures of contingent 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, based on currently available information. Changes in facts and circumstances may result in revised estimates and actual results could differ from those estimates.

Consolidation, Variable Interest Entity, Policy

Our consolidated financial statements include TLLP, a variable interest entity. 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.

Description of New Accounting Pronouncements Not yet Adopted [Text Block]

The Financial Accounting Standards Board (“FASB”) issued an Accounting Standards Update (“ASU”) in July 2012 related to testing indefinite-lived intangible assets for impairment. This ASU provides the option to assess qualitative factors first to determine whether it is necessary to perform the quantitative impairment test. If the Company believes, as a result of its qualitative assessment, that it is more-likely-than-not that the fair value of the indefinite-lived intangible asset is less than its carrying amount, the quantitative impairment test is required. Otherwise, no further testing is required. The Company can choose to assess qualitative factors first on none, some or all of its indefinite-lived intangible assets. The standard is effective for annual and interim impairment tests performed for fiscal years beginning after September 15, 2012. However, an entity can choose to early adopt the standard, provided that the entity has not yet performed its 2012 annual impairment test or issued its financial statements. Our indefinite-lived intangible assets are immaterial to our condensed consolidated financial statements. The adoption of this standard will not have a material impact on our condensed consolidated financial statements.

The FASB issued an ASU in December 2011, which requires an entity to disclose information about offsetting and related arrangements to enable users of its financial statements to understand the effect of these arrangements on its financial position. The guidance requires entities to disclose both gross information and net information about both instruments and transactions eligible for offset in the balance sheet and instruments and transactions subject to an agreement similar to a master netting arrangement. These provisions are effective for interim and annual reporting periods beginning on January 1, 2013. The adoption of this guidance will not have a material impact on our financial position, but may result in additional disclosures.

New Accounting Standards, Policy

The FASB issued an ASU in May 2011 related to fair value measurements and disclosures to achieve common fair value measurements and additional consistency of disclosures between U.S. GAAP and International Financial Reporting Standards. This standard includes amendments that clarify the application of existing fair value measurements and disclosure requirements, while other amendments change a principle or requirement for fair value measurements or disclosures. Some of the changes include (1) the application of the highest and best use and valuation premise concepts, (2) measuring the fair value of an instrument classified in a reporting entity’s shareholders’ equity, and (3) quantitative information required for fair value measurements categorized within level 3 of the fair value hierarchy. In addition, this standard requires additional disclosure for level 3 measurements regarding the sensitivity of fair value to changes in unobservable inputs and any interrelationships between those inputs. The adoption of this guidance, effective January 1, 2012, did not have a material impact on our condensed consolidated financial statements.

Inventory, Policy

We use the last-in, first-out cost method as the primary method to determine the cost of crude oil held by our U.S. subsidiaries (“Domestic crude oil”) and refined product inventories in our refining and retail segments. We determine the carrying value of inventories of crude oil held by our foreign subsidiaries (“Foreign subsidiary crude oil”), oxygenates, and by-products using the first-in, first-out cost method.

Fair Value of Financial Instruments, Policy

We classify financial assets and financial liabilities into the following fair value hierarchy:

• level 1 - quoted prices in active markets for identical assets and liabilities;

• level 2 - quoted prices for similar assets and liabilities in active markets, and inputs other than quoted prices that are observable for the asset or liability; and

• level 3 - unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities.

We measure fair value using level 1 inputs, when available, because they provide the most reliable evidence of fair value. Derivative instruments and our Renewable Identification Numbers (“RINs”) are our only financial assets and financial liabilities measured at fair value on a recurring basis.

Derivatives, Policy

The accounting for changes in the fair value of a commodity derivative depends on whether the derivative has been designated in a hedging relationship and whether we have elected the normal purchases and normal sales exception. The accounting for the change in fair value can be summarized as follows:

Derivative Treatment	Accounting Method
Normal purchases and normal sales exception	Accrual accounting
Designated in qualifying hedging relationship	Hedge accounting
All other derivatives	Mark-to-market accounting

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Earnings Per Share (Tables)

6 Months Ended

Jun. 30, 2012

Earnings Per Share [Abstract]

Schedule of Earnings Per Share, Basic and Diluted

Share and per share calculations are presented below (in millions except per share amounts):

	Three Months Ended				Six Months Ended
	June 30,				June 30,
	2012		2011		2012		2011
Basic:
Net earnings attributable to Tesoro Corporation stockholders	$	387	$	218	$	443	$	325
Weighted average common shares outstanding	139.6		142.6		139.5		142.1
Basic Earnings Per Share	$	2.77	$	1.54	$	3.18	$	2.29
Diluted:
Net earnings attributable to Tesoro Corporation stockholders	$	387	$	218	$	443	$	325
Weighted average common shares outstanding	139.6		142.6		139.5		142.1
Common stock equivalents	0.9		1.8		1.7		2.1
Total diluted shares	140.5		144.4		141.2		144.2
Diluted Earnings Per Share	$	2.75	$	1.52	$	3.14	$	2.26

Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share

Potentially dilutive common stock equivalents excluded from the calculation of diluted earnings per share, as the effect of including such securities would have been anti-dilutive, were as follows (in millions):

	Three Months Ended		Six Months Ended
	June 30,		June 30,
	2012	2011	2012	2011
Stock options (a)	2.8	3.1	2.9	3.1

________________

(a) Stock options presented above were excluded as the exercise prices were greater than the average market price of the common stock during each respective reporting period.

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Derivative Instruments, Open Positions (Details) (CAD) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2012
Derivative
Open positions maturity period (months)	18 months
July
Derivative
Forward contract to purchase Canadian dollars (Canadian dollars- in millions)	52
August
Derivative
Forward contract to purchase Canadian dollars (Canadian dollars- in millions)	26
Mark-to-Market Derivatives | Futures | 2012
Derivative
Long (short) contract volumes (thousands of barrels)	(1,075)
Mark-to-Market Derivatives | Futures | 2013
Derivative
Long (short) contract volumes (thousands of barrels)	(283)
Mark-to-Market Derivatives | Forwards | 2012
Derivative
Long (short) contract volumes (thousands of barrels)	(1,499)
Mark-to-Market Derivatives | Options | 2012
Derivative
Long (short) contract volumes (thousands of barrels)	25

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Tesoro Logistics LP, Credit Facility (Details) (TLLP Revolving Credit Facility)	Jun. 30, 2012
TLLP Revolving Credit Facility
Credit Facility
Amended date	3/30/2012

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Condensed Statements of Consolidated Cash Flows (Unaudited) (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011
CASH FLOWS FROM (USED IN) OPERATING ACTIVITIES
Net earnings	$ 455	$ 329
Adjustments to reconcile net earnings to net cash from (used in) operating activities:
Depreciation and amortization expense	212	209
Amortization of debt issuance costs and discounts	6	10
Loss on asset disposals and impairments	12	57
Stock-based compensation expense	21	35
Write-off of unamortized debt issue costs and discounts	0	13
Deferred income taxes	146	156
Excess tax benefits from stock-based compensation arrangements	(4)	(7)
Other changes in noncurrent assets and liabilities	(205)	(50)
Changes in current assets and current liabilities:
Receivables	110	(469)
Inventories	(13)	(597)
Prepayments and other	55	(75)
Accounts payable and accrued liabilities	(71)	478
Net cash from operating activities	724	89
CASH FLOWS FROM (USED IN) INVESTING ACTIVITIES
Capital expenditures	(243)	(112)
Proceeds from asset sales	3	1
Acquisitions	(38)	0
Net cash used in investing activities	(278)	(111)
CASH FLOWS FROM (USED IN) FINANCING ACTIVITIES
Borrowings under revolving credit agreements	185	115
Repayments on revolving credit agreements	(184)	(160)
Repayments of debt	(1)	(244)
Proceeds from stock options exercised	14	7
Proceeds from issuance of common units -Tesoro Logistics LP	0	288
Distributions to noncontrolling interest	(11)	0
Purchases of common stock	(31)	(7)
Excess tax benefits from stock-based compensation arrangements	4	7
Financing costs and other	0	(25)
Net cash used in financing activities	(24)	(19)
INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	422	(41)
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	900	648
CASH AND CASH EQUIVALENTS, END OF PERIOD	1,322	607
SUPPLEMENTAL CASH FLOW DISCLOSURES
Interest paid, net of capitalized interest	50	62
Income taxes paid, net	1	61
SUPPLEMENTAL DISCLOSURE OF NON-CASH INVESTING ACTIVITIES
Capital expenditures included in accounts payable and accrued liabilities at end of period	$ 52	$ 16

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Fair Value Measurements (Notes)

6 Months Ended

Jun. 30, 2012

Fair Value Disclosures [Abstract]

FAIR VALUE MEASUREMENTS

FAIR VALUE MEASUREMENTS

We classify financial assets and financial liabilities into the following fair value hierarchy:

• level 1 - quoted prices in active markets for identical assets and liabilities;

• level 2 - quoted prices for similar assets and liabilities in active markets, and inputs other than quoted prices that are observable for the asset or liability; and

• level 3 - unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities.

We measure fair value using level 1 inputs, when available, because they provide the most reliable evidence of fair value. Derivative instruments and our Renewable Identification Numbers (“RINs”) are our only financial assets and financial liabilities measured at fair value on a recurring basis. See Note F for further information on the Company’s derivative instruments.

Our derivative instruments consist primarily of options, exchange-traded futures (“Futures Contracts”), over-the-counter swaps and options (“OTC Swap Contracts” and “OTC Option Contracts,” respectively), and physical commodity forward purchase and sale contracts (“Forward Contracts”). Futures Contracts are valued based on quoted prices from exchanges and are categorized in level 1 or level 2 of the fair value hierarchy based on the liquidity of the instrument. OTC Swap Contracts, OTC Option Contracts and Forward Contracts are valued using third-party broker quotes, industry pricing services and price curves derived from commodity exchange postings, with consideration of counterparty credit risk. These quotes are corroborated with market data and are categorized in level 2 of the fair value hierarchy. We did not have any derivative assets or liabilities classified as level 3 at June 30, 2012 or December 31, 2011.

Our RINs obligation represents a liability for the purchase of RINs to satisfy our obligation to blend biofuels into the products we produce.  RINs are assigned to biofuel produced or imported into the U.S. as required by the U.S. Environmental Protection Agency (“EPA”), which was implemented in accordance with the Renewable Fuel Standard of the Energy Policy Act of 2005 and expanded by the Energy Independence and Security Act of 2007.  The EPA sets annual quotas for the percentage of biofuels that must be blended into transportation fuels consumed in the U.S., and as a producer of transportation fuels from petroleum, we are obligated to blend biofuels into the products we produce at a rate that is at least equal to the EPA’s quota.  To the degree we are unable to blend at that rate, we must purchase RINs in the open market to satisfy our obligation.  Our RINs obligation is based on our RINs deficiency and the price of those RINs as of the balance sheet date.  Our RINs obligation is categorized in level 2 of the fair value hierarchy and is measured at fair value using the market approach based on quoted prices from an independent pricing service.

Financial instruments recognized at fair values in our condensed consolidated balance sheets by level within the fair value hierarchy were as follows (in millions):

	Level 1		Level 2		Level 3		Netting and Collateral (a)			Total as of June 30, 2012
Assets:
Commodity Futures Contracts	$	588	$	4	$	—	$	(572	)	$	20
Commodity OTC Swap Contracts	—		3		—		(3		)	—
Commodity Forward Contracts	—		6		—		—			6
Total Assets	$	588	$	13	$	—	$	(575	)	$	26
Liabilities:
Commodity Futures Contracts	$	595	$	7	$	—	$	(593	)	$	9
Commodity OTC Swap Contracts	—		3		—		(3		)	—
RINs Obligation	—		6		—		—			6
Total Liabilities	$	595	$	16	$	—	$	(596	)	$	15

	Level 1		Level 2		Level 3		Netting and Collateral (a)			Total as of December 31, 2011
Assets:
Commodity Futures Contracts	$	86	$	9	$	—	$	(61	)	$	34
Commodity OTC Swap Contracts	—		3		—		(2		)	1
Commodity Forward Contracts	—		4		—		—			4
Total Assets	$	86	$	16	$	—	$	(63	)	$	39
Liabilities:
Commodity Futures Contracts	$	130	$	6	$	—	$	(136	)	$	—
Commodity OTC Swap Contracts	—		3		—		(2		)	1
Commodity Forward Contracts	—		1		—		—			1
RINs Obligation	—		3		—		—			3
Total Liabilities	$	130	$	13	$	—	$	(138	)	$	5

________________

(a) Represents the impact of netting assets, liabilities and cash collateral when a legal right of offset exists. As of June 30, 2012 and December 31, 2011, cash collateral amounts of $21 million and $75 million, respectively, are netted with mark-to-market derivative assets.

Certain of our derivative contracts, under master netting arrangements, include both asset and liability positions. We have elected to 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.

Physical inventory associated with certain Futures Contracts included in the above table is designated for fair value hedge accounting treatment and is adjusted to fair value at the end of the period. At December 31, 2011, the fair value adjustment related to the physical inventory was approximately $4 million. There were no fair value adjustments to the physical inventory at June 30, 2012.

We believe the carrying value of our 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 (less than one percent of our trade receivables and payables are outstanding for greater than 90 days); and

• the expected future insignificance of bad debt expense, which includes an evaluation of counterparty credit risk.

The fair value of our 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 $1.7 billion and $1.8 billion, respectively, at both June 30, 2012 and December 31, 2011.

There were no material nonfinancial assets or liabilities that were measured at fair value during the six months ended June 30, 2012.

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Commitments and Contingencies, Other Matters (Details) (USD $) In Millions, unless otherwise specified		12 Months Ended
	Jun. 30, 2012 MTBE Contaimination Litigation lawsuits	Dec. 31, 2008 TAPS Litigation	Sep. 30, 2010 TAPS Litigation
Other Matters
Remaining lawsuits (lawsuits)	2
Funds received from TAPS, net of contingent legal fees		$ 50
Summary judgement awarded to Chevron			$ 16

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Condensed Consolidating Financial Information, Cash Flows (Details) (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011
CASH FLOWS FROM (USED IN) OPERATING ACTIVITIES
Net cash from (used in) operating activities	$ 724	$ 89
CASH FLOWS FROM (USED IN) INVESTING ACTIVITIES
Capital expenditures	(243)	(112)
Proceeds from asset sales	3	1
Acquisitions	(38)	0
Intercompany notes, net	0	0
Net cash from (used in) investing activities	(278)	(111)
CASH FLOWS FROM (USED IN) FINANCING ACTIVITIES
Borrowings under revolving credit agreements	185	115
Repayments on revolving credit agreements	(184)	(160)
Repayments of debt	(1)	(244)
Proceeds from stock options exercised	14	7
Excess tax benefits from stock-based compensation arrangements	4	7
Distributions to noncontrolling interest	(11)	0
Purchases of common stock	(31)	(7)
Proceeds from issuance of common units -Tesoro Logistics LP	0	288
Net intercompany borrowings (repayments)	0	0
Borrowings from general partner	0	0
Distributions to TLLP unitholders and general partner	0	0
Financing costs and other	0	(25)
Net cash from (used in) financing activities	(24)	(19)
INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	422	(41)
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	900	648
CASH AND CASH EQUIVALENTS, END OF PERIOD	1,322	607
Parent
CASH FLOWS FROM (USED IN) OPERATING ACTIVITIES
Net cash from (used in) operating activities	9	31
CASH FLOWS FROM (USED IN) INVESTING ACTIVITIES
Capital expenditures	0	0
Proceeds from asset sales	0	0
Acquisitions	0
Intercompany notes, net	(65)	59
Net cash from (used in) investing activities	(65)	59
CASH FLOWS FROM (USED IN) FINANCING ACTIVITIES
Borrowings under revolving credit agreements	0	0
Repayments on revolving credit agreements	0	0
Repayments of debt	0	(243)
Proceeds from stock options exercised	14	7
Excess tax benefits from stock-based compensation arrangements	0	0
Distributions to noncontrolling interest	0
Purchases of common stock	(31)	(7)
Proceeds from issuance of common units -Tesoro Logistics LP		0
Net intercompany borrowings (repayments)	0	0
Borrowings from general partner	68	50
Distributions to TLLP unitholders and general partner	5	126
Financing costs and other		(23)
Net cash from (used in) financing activities	56	(90)
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
Guarantor subsidiaries
CASH FLOWS FROM (USED IN) OPERATING ACTIVITIES
Net cash from (used in) operating activities	717	162
CASH FLOWS FROM (USED IN) INVESTING ACTIVITIES
Capital expenditures	(234)	(111)
Proceeds from asset sales	3	1
Acquisitions	(38)
Intercompany notes, net	0	0
Net cash from (used in) investing activities	(269)	(110)
CASH FLOWS FROM (USED IN) FINANCING ACTIVITIES
Borrowings under revolving credit agreements	0	0
Repayments on revolving credit agreements	0	0
Repayments of debt	(1)	(1)
Proceeds from stock options exercised	0	0
Excess tax benefits from stock-based compensation arrangements	4	7
Distributions to noncontrolling interest	0
Purchases of common stock	0	0
Proceeds from issuance of common units -Tesoro Logistics LP		0
Net intercompany borrowings (repayments)	15	(265)
Borrowings from general partner	0	0
Distributions to TLLP unitholders and general partner	6	157
Financing costs and other		0
Net cash from (used in) financing activities	24	(102)
INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	472	(50)
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	805	612
CASH AND CASH EQUIVALENTS, END OF PERIOD	1,277	562
Non-Guarantors
CASH FLOWS FROM (USED IN) OPERATING ACTIVITIES
Net cash from (used in) operating activities	(2)	(104)
CASH FLOWS FROM (USED IN) INVESTING ACTIVITIES
Capital expenditures	(9)	(1)
Proceeds from asset sales	0	0
Acquisitions	0
Intercompany notes, net	0	0
Net cash from (used in) investing activities	(9)	(1)
CASH FLOWS FROM (USED IN) FINANCING ACTIVITIES
Borrowings under revolving credit agreements	185	115
Repayments on revolving credit agreements	(184)	(160)
Repayments of debt	0	0
Proceeds from stock options exercised	0	0
Excess tax benefits from stock-based compensation arrangements	0	0
Distributions to noncontrolling interest	(11)
Purchases of common stock	0	0
Proceeds from issuance of common units -Tesoro Logistics LP		288
Net intercompany borrowings (repayments)	50	206
Borrowings from general partner	(68)	(50)
Distributions to TLLP unitholders and general partner	(11)	(283)
Financing costs and other		(2)
Net cash from (used in) financing activities	(39)	114
INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	(50)	9
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	95	36
CASH AND CASH EQUIVALENTS, END OF PERIOD	45	45
Eliminations
CASH FLOWS FROM (USED IN) OPERATING ACTIVITIES
Net cash from (used in) operating activities	0	0
CASH FLOWS FROM (USED IN) INVESTING ACTIVITIES
Capital expenditures	0	0
Proceeds from asset sales		0
Acquisitions	0
Intercompany notes, net	65	(59)
Net cash from (used in) investing activities	65	(59)
CASH FLOWS FROM (USED IN) FINANCING ACTIVITIES
Borrowings under revolving credit agreements	0	0
Repayments on revolving credit agreements	0	0
Repayments of debt		0
Proceeds from stock options exercised	0	0
Excess tax benefits from stock-based compensation arrangements	0	0
Distributions to noncontrolling interest	0
Purchases of common stock	0	0
Proceeds from issuance of common units -Tesoro Logistics LP		0
Net intercompany borrowings (repayments)	(65)	59
Borrowings from general partner	0	0
Distributions to TLLP unitholders and general partner	0	0
Financing costs and other		0
Net cash from (used in) financing activities	(65)	59
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

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Inventories (Tables)

6 Months Ended

Jun. 30, 2012

Inventory Disclosure [Abstract]

Schedule of Inventory, Current

Components of inventories were as follows (in millions):

	June 30, 2012		December 31, 2011
Domestic crude oil and refined products	$	1,362	$	1,273
Foreign subsidiary crude oil	277		346
Materials and supplies	90		87
Oxygenates and by-products	36		43
Merchandise	16		14
Total Inventories	$	1,781	$	1,763

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Tesoro Logistics LP Tesoro Logistics LP, Contribution of Assets (Details) (USD $) In Millions, except Share data, unless otherwise specified	6 Months Ended
	Jun. 30, 2012
Sale of assets date	4/1/2012
Consideration for Martinez Crude Oil Marine Terminal	$ 75.0
Issuance of Equity
Consideration for Martinez Crude Oil Marine Terminal	7.5
Cash
Consideration for Martinez Crude Oil Marine Terminal	$ 67.5
Single-berth dock
Capacity (thousand barrels per day)	145
Crude oil storage tanks
Capacity (barrels)	425,000
Assets sold (assets)	5
Firewater tanks
Capacity (barrels)	48,000
Assets sold (assets)	2
Pipelines
Logistic assets (assets)	5
Marine terminal
Logistic assets (assets)	1
Refined products terminals
Logistic assets (assets)	8
Limited Partner
Percentage ownership	52.00%
Limited Partner | Issuance of Equity
Limited partners' capital account, units issued (units)	206,362
Percentage ownership	1.00%
General Partner
Percentage ownership	2.00%
General Partner | Issuance of Equity
General partners' capital account, units issued (units)	4,212

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Condensed Consolidating Financial Information (Notes)

6 Months Ended

Jun. 30, 2012

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 are presented below. Tesoro and certain subsidiary guarantors have fully and unconditionally guaranteed our 6 1/4% Senior Notes due 2012, 6 5/8% Senior Notes due 2015, 6 1/2% Senior Notes due 2017, and 9 3/4% Senior Notes due 2019. TLLP, in which we have a 52% ownership interest, 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. 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 jointly and severally liable for Tesoro's outstanding senior notes. The information is presented using the equity method of accounting for investments in subsidiaries.

Condensed Consolidating Balance Sheet as of June 30, 2012

(In millions)

	Parent		Guarantor Subsidiaries			Non-Guarantors		Eliminations			Consolidated
ASSETS
Current Assets:
Cash and cash equivalents	$	—	$	1,277		$	45	$	—		$	1,322
Receivables, less allowance for doubtful accounts	1		1,094			67		—			1,162
Inventories	—		1,504			277		—			1,781
Prepayments and other current assets	70		68			10		—			148
Total Current Assets	71		3,943			399		—			4,413
Net Property, Plant and Equipment	—		5,021			267		—			5,288
Investment in Subsidiaries	4,875		(248		)	298		(4,925		)	—
Long-Term Receivables from Affiliates	2,237		—			—		(2,237		)	—
Other Noncurrent Assets	38		668			119		(118		)	707
Total Assets	$	7,221	$	9,384		$	1,083	$	(7,280	)	$	10,408
LIABILITIES AND EQUITY
Current Liabilities:
Accounts payable and accrued liabilities	$	148	$	2,425		$	195	$	—		$	2,768
Current maturities of debt	299		3			50		—			352
Total Current Liabilities	447		2,428			245		—			3,120
Long-Term Payables to Affiliates	—		2,161			76		(2,237		)	—
Debt	1,332		18			118		(118		)	1,350
Other Noncurrent Liabilities	1,330		181			4		—			1,515
Equity-Tesoro Corporation	4,112		4,596			329		(4,925		)	4,112
Equity-Noncontrolling interest	—		—			311		—			311
Total Liabilities and Equity	$	7,221	$	9,384		$	1,083	$	(7,280	)	$	10,408

Condensed Consolidating Balance Sheet as of December 31, 2011

(In millions)

	Parent		Guarantor Subsidiaries			Non-Guarantors		Eliminations			Consolidated
ASSETS
Current Assets:
Cash and cash equivalents	$	—	$	805		$	95	$	—		$	900
Receivables, less allowance for doubtful accounts	1		1,189			82		—			1,272
Inventories	—		1,416			347		—			1,763
Prepayments and other current assets	106		88			22		—			216
Total Current Assets	107		3,498			546		—			4,151
Net Property, Plant and Equipment	—		4,925			223		—			5,148
Investment in Subsidiaries	4,436		(284		)	282		(4,434		)	—
Long-Term Receivables from Affiliates	1,944		—			—		(1,944		)	—
Other Noncurrent Assets	42		548			53		(50		)	593
Total Assets	$	6,529	$	8,687		$	1,104	$	(6,428	)	$	9,892
LIABILITIES AND EQUITY
Current Liabilities:
Accounts payable and accrued liabilities	$	85	$	2,420		$	326	$	—		$	2,831
Current maturities of debt	299		2			117		—			418
Total Current Liabilities	384		2,422			443		—			3,249
Long-Term Payables to Affiliates	—		1,922			22		(1,944		)	—
Debt	1,264		19			50		(50		)	1,283
Other Noncurrent Liabilities	1,200		177			5		—			1,382
Equity-Tesoro Corporation	3,681		4,147			274		(4,434		)	3,668
Equity-Noncontrolling interest	—		—			310		—			310
Total Liabilities and Equity	$	6,529	$	8,687		$	1,104	$	(6,428	)	$	9,892

Condensed Consolidating Statement of Operations and

Comprehensive Income for the Three Months EndedJune 30, 2012

(In millions)

	Parent			Guarantor Subsidiaries			Non- Guarantors			Eliminations			Consolidated
REVENUES	$	—		$	9,768		$	642		$	(2,305	)	$	8,105
Costs and expenses	3			9,103			623			(2,305		)	7,424
OPERATING INCOME (LOSS)	(3		)	665			19			—			681
Equity in earnings (loss) of subsidiaries	391			13			10			(414		)	—
Other expense	(1		)	(50		)	(2		)	—			(53		)
EARNINGS (LOSS) BEFORE INCOME TAXES	387			628			27			(414		)	628
Income tax expense (benefit) (a)	—			237			(2		)	—			235
NET EARNINGS (LOSS)	387			391			29			(414		)	393
Less net income attributable to noncontrolling interest	—			—			6			—			6
NET EARNINGS (LOSS) ATTRIBUTABLE TO TESORO CORPORATION	$	387		$	391		$	23		$	(414	)	$	387
COMPREHENSIVE INCOME (LOSS)
Total comprehensive income (loss)	$	387		$	391		$	29		$	(414	)	$	393
Less noncontrolling interest in comprehensive income	—			—			6			—			6
COMPREHENSIVE INCOME (LOSS) ATTRIBUTABLE TO TESORO CORPORATION	$	387		$	391		$	23		$	(414	)	$	387

_______________

(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 and

Comprehensive Income for the Three Months EndedJune 30, 2011

(In millions)

	Parent			Guarantor Subsidiaries			Non- Guarantors			Eliminations			Consolidated
REVENUES	$	—		$	9,964		$	960		$	(2,961	)	$	7,963
Costs and expenses	1			9,557			947			(2,961		)	7,544
OPERATING INCOME (LOSS)	(1		)	407			13			—			419
Equity in earnings (loss) of subsidiaries	224			(5		)	21			(240		)	—
Other expense	—			(58		)	(4		)	—			(62		)
EARNINGS (LOSS) BEFORE INCOME TAXES	223			344			30			(240		)	357
Income tax expense (a)	1			133			1			—			135
NET EARNINGS (LOSS)	222			211			29			(240		)	222
Less net income attributable to noncontrolling interest	—			—			4			—			4
NET EARNINGS (LOSS) ATTRIBUTABLE TO TESORO CORPORATION	$	222		$	211		$	25		$	(240	)	$	218
COMPREHENSIVE INCOME (LOSS)
Total comprehensive income (loss)	$	222		$	211		$	29		$	(240	)	$	222
Less noncontrolling interest in comprehensive income	—			—			4			—			4
COMPREHENSIVE INCOME (LOSS) ATTRIBUTABLE TO TESORO CORPORATION	$	222		$	211		$	25		$	(240	)	$	218

_______________

(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 and

Comprehensive Income for the Six Months EndedJune 30, 2012

(In millions)

	Parent			Guarantor Subsidiaries			Non- Guarantors			Eliminations			Consolidated
REVENUES	$	—		$	19,401		$	1,238		$	(4,714	)	$	15,925
Costs and expenses	5			18,609			1,210			(4,714		)	15,110
OPERATING INCOME (LOSS)	(5		)	792			28			—			815
Equity in earnings (loss) of subsidiaries	450			—			41			(491		)	—
Other expense	(2		)	(82		)	(4		)	—			(88		)
EARNINGS (LOSS) BEFORE INCOME TAXES	443			710			65			(491		)	727
Income tax expense (a)	—			272			—			—			272
NET EARNINGS (LOSS)	443			438			65			(491		)	455
Less net income attributable to noncontrolling interest	—			—			12			—			12
NET EARNINGS (LOSS) ATTRIBUTABLE TO TESORO CORPORATION	$	443		$	438		$	53		$	(491	)	$	443
COMPREHENSIVE INCOME (LOSS)
Total comprehensive income (loss)	$	443		$	438		$	65		$	(491	)	$	455
Less noncontrolling interest in comprehensive income	—			—			12			—			12
COMPREHENSIVE INCOME (LOSS) ATTRIBUTABLE TO TESORO CORPORATION	$	443		$	438		$	53		$	(491	)	$	443

_______________

(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 and

Comprehensive Income for the Six Months EndedJune 30, 2011

(In millions)

	Parent			Guarantor Subsidiaries			Non- Guarantors			Eliminations			Consolidated
REVENUES	$	—		$	18,205		$	1,648		$	(5,364	)	$	14,489
Costs and expenses	5			17,580			1,630			(5,364		)	13,851
OPERATING INCOME (LOSS)	(5		)	625			18			—			638
Equity in earnings (loss) of subsidiaries	333			(17		)	21			(337		)	—
Other expense	—			(98		)	(6		)	—			(104		)
EARNINGS (LOSS) BEFORE INCOME TAXES	328			510			33			(337		)	534
Income tax expense (benefit) (a)	(1		)	204			2			—			205
NET EARNINGS (LOSS)	329			306			31			(337		)	329
Less net income attributable to noncontrolling interest	—			—			4			—			4
NET EARNINGS (LOSS) ATTRIBUTABLE TO TESORO CORPORATION	$	329		$	306		$	27		$	(337	)	$	325
COMPREHENSIVE INCOME (LOSS)
Total comprehensive income (loss)	$	329		$	306		$	31		$	(337	)	$	329
Less noncontrolling interest in comprehensive income	—			—			4			—			4
COMPREHENSIVE INCOME (LOSS) ATTRIBUTABLE TO TESORO CORPORATION	$	329		$	306		$	27		$	(337	)	$	325

_______________

(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 Cash Flows for the Six Months EndedJune 30, 2012

(In millions)

	Parent			Guarantor Subsidiaries			Non-Guarantors			Eliminations			Consolidated
CASH FLOWS FROM (USED IN) OPERATING ACTIVITIES
Net cash from (used in) operating activities	$	9		$	717		$	(2	)	$	—		$	724
CASH FLOWS FROM (USED IN) INVESTING ACTIVITIES
Capital expenditures	—			(234		)	(9		)	—			(243		)
Acquisitions	—			(38		)	—			—			(38		)
Proceeds from asset sales	—			3			—						3
Intercompany notes, net	(65		)	—			—			65			—
Net cash from (used in) investing activities	(65		)	(269		)	(9		)	65			(278		)
CASH FLOWS FROM (USED IN) FINANCING ACTIVITIES
Borrowings under revolving credit agreements	—			—			185			—			185
Repayments on revolving credit agreements	—			—			(184		)	—			(184		)
Repayments of debt	—			(1		)	—						(1		)
Proceeds from stock options exercised	14			—			—			—			14
Excess tax benefits from stock-based compensation arrangements	—			4			—			—			4
Distributions to noncontrolling interest	—			—			(11		)	—			(11		)
Purchases of common stock	(31		)	—			—			—			(31		)
Net intercompany borrowings (repayments)	—			15			50			(65		)	—
Borrowings from general partner	68			—			(68		)	—			—
Distributions to TLLP unitholders and general partner	5			6			(11		)	—			—
Net cash from (used in) financing activities	56			24			(39		)	(65		)	(24		)
INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	—			472			(50		)	—			422
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	—			805			95			—			900
CASH AND CASH EQUIVALENTS, END OF PERIOD	$	—		$	1,277		$	45		$	—		$	1,322

Condensed Consolidating Statement of Cash Flows for the Six Months EndedJune 30, 2011

(In millions)

	Parent			Guarantor Subsidiaries			Non-Guarantors			Eliminations			Consolidated
CASH FLOWS FROM (USED IN) OPERATING ACTIVITIES
Net cash from (used in) operating activities	$	31		$	162		$	(104	)	$	—		$	89
CASH FLOWS FROM (USED IN) INVESTING ACTIVITIES
Capital expenditures	—			(111		)	(1		)	—			(112		)
Proceeds from asset sales	—			1			—			—			1
Intercompany notes, net	59			—			—			(59		)	—
Net cash from (used in) investing activities	59			(110		)	(1		)	(59		)	(111		)
CASH FLOWS FROM (USED IN) FINANCING ACTIVITIES
Borrowings under revolving credit agreements	—			—			115			—			115
Repayments on revolving credit agreements	—			—			(160		)	—			(160		)
Repayments of debt	(243		)	(1		)	—			—			(244		)
Proceeds from stock options exercised	7			—			—			—			7
Purchases of common stock	(7		)	—			—			—			(7		)
Excess tax benefits from stock-based compensation arrangements	—			7			—			—			7
Proceeds from issuance of common units Tesoro Logistics LP	—			—			288			—			288
Net intercompany borrowings (repayments)	—			(265		)	206			59			—
Borrowings from general partner	50			—			(50		)	—			—
Distributions to TLLP unitholders and general partner	126			157			(283		)	—			—
Financing costs and other	(23		)	—			(2		)	—			(25		)
Net cash from (used in) financing activities	(90		)	(102		)	114			59			(19		)
INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	—			(50		)	9			—			(41		)
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	—			612			36			—			648
CASH AND CASH EQUIVALENTS, END OF PERIOD	$	—		$	562		$	45		$	—		$	607