10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-Q

(Mark One)

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

For the quarterly period ended March 31, 2021

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: 001-35349

Phillips 66

(Exact name of registrant as specified in its charter) 

Delaware	45-3779385
(State or other jurisdiction of incorporation or organization)	(I.R.S. Employer Identification No.)

2331 CityWest Blvd., Houston, Texas 77042

(Address of principal executive offices) (Zip Code)

281-293-6600

(Registrant’s telephone number, including area code)

Securities registered pursuant to Section 12(b) of the Act:
	Title of each class	Trading Symbol(s)	Name of each exchange on which registered
	Common Stock, $0.01 Par Value	PSX	New York Stock Exchange

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  ☒    No  ☐

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T during the preceding 12 months (or for such shorter period that the registrant was required to submit such files).     Yes  ☒    No  ☐

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

Large accelerated filer	☒	Accelerated filer	☐	Non-accelerated filer	☐
Smaller reporting company	☐	Emerging growth company	☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐    

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).  Yes  ☐    No  ☒

The registrant had 437,867,054 shares of common stock, $0.01 par value, outstanding as of March 31, 2021.

PHILLIPS 66

TABLE OF CONTENTS

	Page
Part I – Financial Information
Item 1. Financial Statements
Consolidated Statement of Operations	1
Consolidated Statement of Comprehensive Loss	2
Consolidated Balance Sheet	3
Consolidated Statement of Cash Flows	4
Consolidated Statement of Changes in Equity	5
Notes to Consolidated Financial Statements	6
Item 2. Management’s Discussion and Analysis of Financial Condition and      Results of Operations	27
Item 3. Quantitative and Qualitative Disclosures About Market Risk	53
Item 4. Controls and Procedures	53
Part II – Other Information
Item 1. Legal Proceedings	54
Item 1A. Risk Factors	54
Item 2. Unregistered Sales of Equity Securities and Use of Proceeds	54
Item 6. Exhibits	55
Signatures	56

PART I. FINANCIAL INFORMATION

Item 1. FINANCIAL STATEMENTS

Consolidated Statement of Operations Phillips 66

	Millions of Dollars
	Three Months Ended March 31
	2021		2020
Revenues and Other Income
Sales and other operating revenues	$	21,627	20,878
Equity in earnings of affiliates	285		365
Net gain on dispositions	—		1
Other income	15		—
Total Revenues and Other Income	21,927		21,244
Costs and Expenses
Purchased crude oil and products	20,065		18,440
Operating expenses	1,380		1,341
Selling, general and administrative expenses	408		319
Depreciation and amortization	356		342
Impairments	198		3,006
Taxes other than income taxes	139		157
Accretion on discounted liabilities	6		6
Interest and debt expense	146		111
Total Costs and Expenses	22,698		23,722
Loss before income taxes	(771)		(2,478)
Income tax benefit	(132)		(51)
Net Loss	(639)		(2,427)
Less: net income attributable to noncontrolling interests	15		69
Net Loss Attributable to Phillips 66	$	(654)	(2,496)
Net Loss Attributable to Phillips 66 Per Share of Common Stock (dollars)
Basic	$	(1.49)	(5.66)
Diluted	(1.49)		(5.66)
Weighted-Average Common Shares Outstanding (thousands)
Basic	439,504		441,345
Diluted	439,504		441,345
See Notes to Consolidated Financial Statements.

1

Consolidated Statement of Comprehensive Loss Phillips 66

	Millions of Dollars
	Three Months Ended March 31
	2021		2020
Net Loss	$	(639)	(2,427)
Other comprehensive income (loss)
Defined benefit plans
Amortization of net actuarial loss and prior service credit	22		23
Plans sponsored by equity affiliates	6		2
Income taxes on defined benefit plans	(6)		(5)
Defined benefit plans, net of income taxes	22		20
Foreign currency translation adjustments	(15)		(222)
Income taxes on foreign currency translation adjustments	—		1
Foreign currency translation adjustments, net of income taxes	(15)		(221)
Cash flow hedges	2		(9)
Income taxes on hedging activities	—		2
Hedging activities, net of income taxes	2		(7)
Other Comprehensive Income (Loss), Net of Income Taxes	9		(208)
Comprehensive Loss	(630)		(2,635)
Less: comprehensive income attributable to noncontrolling interests	15		69
Comprehensive Loss Attributable to Phillips 66	$	(645)	(2,704)

See Notes to Consolidated Financial Statements.

2

Consolidated Balance Sheet Phillips 66

	Millions of Dollars
	March 31 2021		December 31 2020
Assets
Cash and cash equivalents	$	1,351	2,514
Accounts and notes receivable (net of allowances of $51 million in 2021 and $37 million in 2020)	7,161		5,688
Accounts and notes receivable—related parties	1,004		834
Inventories	4,273		3,893
Prepaid expenses and other current assets	629		347
Total Current Assets	14,418		13,276
Investments and long-term receivables	13,376		13,624
Net properties, plants and equipment	23,677		23,716
Goodwill	1,425		1,425
Intangibles	836		843
Other assets	1,764		1,837
Total Assets	$	55,496	54,721
Liabilities
Accounts payable	$	7,484	5,171
Accounts payable—related parties	762		378
Short-term debt	516		987
Accrued income and other taxes	1,149		1,351
Employee benefit obligations	316		573
Other accruals	1,204		1,058
Total Current Liabilities	11,431		9,518
Long-term debt	14,906		14,906
Asset retirement obligations and accrued environmental costs	682		657
Deferred income taxes	5,547		5,644
Employee benefit obligations	1,351		1,341
Other liabilities and deferred credits	1,122		1,132
Total Liabilities	35,039		33,198
Equity
Common stock (2,500,000,000 shares authorized at $0.01 par value)      Issued (2021—649,638,881 shares; 2020—648,643,223 shares)
Par value	6		6
Capital in excess of par	20,420		20,383
Treasury stock (at cost: 2021 and 2020—211,771,827 shares)	(17,116)		(17,116)
Retained earnings	15,449		16,500
Accumulated other comprehensive loss	(780)		(789)
Total Stockholders’ Equity	17,979		18,984
Noncontrolling interests	2,478		2,539
Total Equity	20,457		21,523
Total Liabilities and Equity	$	55,496	54,721

See Notes to Consolidated Financial Statements.

3

Consolidated Statement of Cash Flows Phillips 66

	Millions of Dollars
	Three Months Ended March 31
	2021		2020
Cash Flows From Operating Activities
Net loss	$	(639)	(2,427)
Adjustments to reconcile net loss to net cash provided by operating activities
Depreciation and amortization	356		342
Impairments	198		3,006
Accretion on discounted liabilities	6		6
Deferred income taxes	(103)		(47)
Undistributed equity earnings	217		(4)
Net gain on dispositions	—		(1)
Other	138		(139)
Working capital adjustments
Accounts and notes receivable	(1,740)		3,900
Inventories	(377)		(1,620)
Prepaid expenses and other current assets	(283)		(90)
Accounts payable	2,779		(3,239)
Taxes and other accruals	(281)		530
Net Cash Provided by Operating Activities	271		217
Cash Flows From Investing Activities
Capital expenditures and investments	(331)		(923)
Return of investments in equity affiliates	58		38
Proceeds from asset dispositions	—		1
Advances/loans—related parties	(155)		(8)
Other	(39)		15
Net Cash Used in Investing Activities	(467)		(877)
Cash Flows From Financing Activities
Issuance of debt	450		1,199
Repayment of debt	(925)		(7)
Issuance of common stock	20		6
Repurchase of common stock	—		(443)
Dividends paid on common stock	(394)		(396)
Distributions to noncontrolling interests	(76)		(61)
Other	(20)		(22)
Net Cash Provided by (Used in) Financing Activities	(945)		276
Effect of Exchange Rate Changes on Cash and Cash Equivalents	(22)		(9)
Net Change in Cash and Cash Equivalents	(1,163)		(393)
Cash and cash equivalents at beginning of period	2,514		1,614
Cash and Cash Equivalents at End of Period	$	1,351	1,221

See Notes to Consolidated Financial Statements.

4

Consolidated Statement of Changes in Equity Phillips 66

	Millions of Dollars
	Three Months Ended March 31
	Attributable to Phillips 66
	Common Stock
	Par Value		Capital in Excess of Par	Treasury Stock	Retained Earnings	Accum. Other Comprehensive Loss	Noncontrolling Interests	Total
December 31, 2020	$	6	20,383	(17,116)	16,500	(789)	2,539	21,523
Net income (loss)	—		—	—	(654)	—	15	(639)
Other comprehensive income	—		—	—	—	9	—	9
Dividends paid on common stock ($0.90 per share)	—		—	—	(394)	—	—	(394)
Benefit plan activity	—		37	—	(3)	—	—	34
Distributions to noncontrolling interests	—		—	—	—	—	(76)	(76)
March 31, 2021	$	6	20,420	(17,116)	15,449	(780)	2,478	20,457
December 31, 2019	$	6	20,301	(16,673)	22,064	(788)	2,259	27,169
Net income (loss)	—		—	—	(2,496)	—	69	(2,427)
Other comprehensive loss	—		—	—	—	(208)	—	(208)
Dividends paid on common stock ($0.90 per share)	—		—	—	(396)	—	—	(396)
Repurchase of common stock	—		—	(443)	—	—	—	(443)
Benefit plan activity	—		4	—	(2)	—	—	2
Distributions to noncontrolling interests	—		—	—	—	—	(61)	(61)
Other	—		—	—	(2)	5	—	3
March 31, 2020	$	6	20,305	(17,116)	19,168	(991)	2,267	23,639

	Shares
	Three Months Ended March 31
	Common Stock Issued	Treasury Stock
December 31, 2020	648,643,223	211,771,827
Repurchase of common stock	—	—
Shares issued—share-based compensation	995,658	—
March 31, 2021	649,638,881	211,771,827
December 31, 2019	647,416,633	206,390,806
Repurchase of common stock	—	5,381,021
Shares issued—share-based compensation	1,029,901	—
March 31, 2020	648,446,534	211,771,827
See Notes to Consolidated Financial Statements.

5

Notes to Consolidated Financial Statements Phillips 66

Note 1—Interim Financial Information

The unaudited interim financial information presented in the financial statements included in this report is prepared in accordance with generally accepted accounting principles in the United States (GAAP) and includes all known accruals and adjustments necessary, in the opinion of management, for a fair presentation of the consolidated financial position of Phillips 66 and its results of operations and cash flows for the periods presented. Unless otherwise specified, all such adjustments are of a normal and recurring nature. Certain notes and other information have been condensed or omitted from the interim financial statements included in this report. Therefore, these interim financial statements should be read in conjunction with the consolidated financial statements and notes included in our 2020 Annual Report on Form 10-K. The results of operations for the three months ended March 31, 2021, are not necessarily indicative of the results expected for the full year.

Note 2—Sales and Other Operating Revenues

Disaggregated Revenues

The following tables present our disaggregated sales and other operating revenues:

	Millions of Dollars
	Three Months Ended March 31
	2021		2020
Product Line and Services
Refined petroleum products	$	16,343	16,157
Crude oil resales	3,189		2,877
Natural gas liquids (NGL)	1,774		979
Services and other*	321		865
Consolidated sales and other operating revenues	$	21,627	20,878
Geographic Location**
United States	$	16,612	15,710
United Kingdom	2,287		2,309
Germany	817		858
Other foreign countries	1,911		2,001
Consolidated sales and other operating revenues	$	21,627	20,878
* Includes derivatives-related activities. See Note 12—Derivatives and Financial Instruments, for additional information.
** Sales and other operating revenues are attributable to countries based on the location of the operations generating the revenues.

Contract-Related Assets and Liabilities

At March 31, 2021, and December 31, 2020, receivables from contracts with customers were $5,375 million and $3,911 million, respectively. Significant noncustomer balances, such as buy/sell receivables and excise tax receivables, were excluded from these amounts.

Our contract-related assets also include payments we make to our marketing customers related to incentive programs. An incentive payment is initially recognized as an asset and subsequently amortized as a reduction to revenue over the contract term, which generally ranges from 5 to 15 years. At March 31, 2021, and December 31, 2020, our asset balances related to such payments were $414 million and $404 million, respectively.

Our contract liabilities represent advances from our customers prior to product or service delivery. At March 31, 2021, and December 31, 2020, contract liabilities were immaterial.

6

Remaining Performance Obligations

Most of our contracts with customers are spot contracts or term contracts with only variable consideration. We do not disclose remaining performance obligations for these contracts as the expected duration is one year or less or because the variable consideration has been allocated entirely to the unsatisfied performance obligations. We also have certain contracts in our Midstream segment that include minimum volume commitments with fixed pricing, which mostly expire by 2022. At March 31, 2021, the remaining performance obligations related to these minimum volume commitment contracts were immaterial.

Note 3—Credit Losses

We are exposed to credit losses primarily through our sales of refined petroleum products, crude oil and NGL. We assess each counterparty’s ability to pay for the products we sell by conducting a credit review. The credit review considers our expected billing exposure and timing for payment and the counterparty’s established credit rating or our assessment of the counterparty’s creditworthiness based on our analysis of their financial statements when a credit rating is not available. We also consider contract terms and conditions, country and political risk, and business strategy in our evaluation. A credit limit is established for each counterparty based on the outcome of this review. We may require collateralized asset support or a prepayment to mitigate credit risk.

We monitor our ongoing credit exposure through active review of counterparty balances against contract terms and due dates. Our activities include timely account reconciliations, dispute resolution and payment confirmations. We may employ collection agencies and legal counsel to pursue recovery of defaulted receivables.

The negative economic impacts associated with Coronavirus Disease 2019 (COVID-19) have increased the probability that certain of our counterparties may not be able to completely fulfill their obligations in a timely manner. In response, we have enhanced our credit monitoring, sought collateral to support some transactions, and required prepayments from higher-risk counterparties.

At March 31, 2021, and December 31, 2020, we reported $8,165 million and $6,522 million of accounts and notes receivable, net of allowances of $51 million and $37 million, respectively. Based on an aging analysis at March 31, 2021, more than 95% of our accounts receivable were outstanding less than 60 days.

We are also exposed to credit losses from off-balance sheet exposures, such as guarantees of joint venture debt and standby letters of credit. See Note 10—Guarantees, and Note 11—Contingencies and Commitments, for more information on these off-balance sheet exposures.

Note 4—Inventories

Inventories consisted of the following:

	Millions of Dollars
	March 31 2021		December 31 2020
Crude oil and petroleum products	$	3,915	3,536
Materials and supplies	358		357
	$	4,273	3,893

Inventories valued on the last-in, first-out (LIFO) basis totaled $3,740 million and $3,368 million at March 31, 2021, and December 31, 2020, respectively. The estimated excess of current replacement cost over LIFO cost of inventories amounted to approximately $4.2 billion and $2.7 billion at March 31, 2021, and December 31, 2020, respectively.

7

Note 5—Investments, Loans and Long-Term Receivables

Equity Investments

Dakota Access, LLC (Dakota Access) and Energy Transfer Crude Oil Company, LLC (ETCO)

In March 2019, a wholly owned subsidiary of Dakota Access issued $2.5 billion aggregate principal amount of senior unsecured notes. Dakota Access and ETCO have guaranteed repayment of the notes. In addition, Phillips 66 Partners LP (Phillips 66 Partners) and its co-venturers in Dakota Access provided a Contingent Equity Contribution Undertaking (CECU) in conjunction with the notes offering. Under the CECU, the co-venturers may be severally required to make proportionate equity contributions to Dakota Access if there is an unfavorable final judgment in the ongoing litigation related to an easement granted by the U.S. Army Corps of Engineers (USACE) to allow the pipeline to be constructed under Lake Oahe in North Dakota. Contributions may be required if Dakota Access determines that the issues included in any such final judgment cannot be remediated and Dakota Access has or is projected to have insufficient funds to satisfy repayment of the notes. If Dakota Access undertakes remediation to cure issues raised in a final judgment, contributions may be required if any series of the notes become due, whether by acceleration or at maturity, during such time, to the extent Dakota Access has or is projected to have insufficient funds to pay such amounts. At March 31, 2021, Phillips 66 Partners’ share of the maximum potential equity contributions under the CECU was approximately $631 million.

In July 2020, the trial court presiding over the litigation vacated Dakota Access’ easement under Lake Oahe and ordered the Dakota Access Pipeline to be shut down and emptied of crude oil pending the preparation of an Environmental Impact Statement (EIS) by the USACE, which had been ordered by the court in March 2020 and is now expected to be completed by March 2022. In August 2020, pending an appeal of the trial court’s decisions, an appellate court denied Dakota Access’ motion to stay the order vacating the easement, but granted its motion to stay the order that the pipeline be shut down while the EIS is prepared. In January 2021, the appellate court affirmed the trial court’s order vacating the easement and directing the USACE to prepare an EIS and reversed the order directing the pipeline to be shut down. Notwithstanding that the easement has been vacated, in April 2021, the USACE indicated that it currently intends to allow the pipeline to continue to operate while it proceeds with the EIS. Currently, there is a motion for a permanent injunction to shut down the pipeline before the trial court that could be decided at any time. Additionally, Dakota Access has requested the appellate court to stay its January 2021 decision pending a filing and disposition of a petition for writ of certiorari to the U.S. Supreme Court.

If the pipeline is required to cease operations, either permanently or pending the preparation of the EIS, and should Dakota Access and ETCO not have sufficient funds to pay ongoing expenses, Phillips 66 Partners also could be required to support its share of the ongoing expenses, including scheduled interest payments on the notes of approximately $25 million annually, in addition to the potential obligations under the CECU.

At March 31, 2021, the aggregate book value of Phillips 66 Partners’ investments in Dakota Access and ETCO was $575 million.

CF United LLC (CF United)

We hold a 50% voting interest and a 48% economic interest in CF United, a retail marketing joint venture with operations primarily on the U.S. West Coast. CF United is considered a variable interest entity (VIE) because our co-venturer has an option to require us to purchase its interest based on a fixed multiple. The put option becomes effective July 1, 2023, and expires on March 31, 2024. The put option is viewed as a variable interest as the purchase price on the exercise date may not represent the then-current fair value of CF United. We have determined that we are not the primary beneficiary because we and our co-venturer jointly direct the activities of CF United that most significantly impact economic performance. At March 31, 2021, our maximum exposure to loss was comprised of our $334 million investment in CF United, and any potential future loss resulting from the put option should the purchase price based on a fixed multiple exceed the then-current fair value of CF United.

8

OnCue Holdings, LLC (OnCue)

We hold a 50% interest in OnCue, a joint venture that owns and operates retail convenience stores. We fully guaranteed various debt agreements of OnCue and our co-venturer did not participate in the guarantees. This entity is considered a VIE because our debt guarantees resulted in OnCue not being exposed to all potential losses. We have determined we are not the primary beneficiary because we do not have the power to direct the activities that most significantly impact economic performance. At March 31, 2021, our maximum exposure to loss was $178 million, which represented the book value of our investment in OnCue of $99 million and guaranteed debt obligations of $79 million.

Liberty Pipeline LLC (Liberty)

At March 31, 2021, Phillips 66 Partners held a 50% interest in Liberty, a joint venture formed to develop and construct the Liberty Pipeline system. Liberty was considered a VIE because it did not have sufficient equity at risk to fully fund the construction of all assets required for principal operations. It was determined that Phillips 66 Partners was not the primary beneficiary because Phillips 66 Partners and its co-venturer jointly directed the activities of Liberty that most significantly impact economic performance.

In the first quarter of 2021, Phillips 66 Partners’ decision to exit the Liberty Pipeline project resulted in a $198 million before-tax impairment of its investment in Liberty. The impairment is included in the “Impairments” line item on our consolidated statement of operations for the three months ended March 31, 2021. See Note 7—Impairments, and Note 13—Fair Value Measurements, for additional information regarding the impairment and the techniques used to determine the fair value of Phillips 66 Partners’ investment in Liberty. At March 31, 2021, the book value of Phillips 66 Partners’ investment in Liberty was $46 million.

In April 2021, Phillips 66 Partners transferred its ownership interest in Liberty to its co-venturer for cash and certain pipeline assets with an estimated fair value that approximated its book value at March 31, 2021.

Related Party Loans

We and our co-venturer provided member loans to WRB Refining LP (WRB). At March 31, 2021, our 50% share of the outstanding member loan balance, including accrued interest, was $434 million.

Note 6—Properties, Plants and Equipment

Our gross investment in properties, plants and equipment (PP&E) and the associated accumulated depreciation and amortization (Accum. D&A) balances were as follows:

	Millions of Dollars
	March 31, 2021				December 31, 2020
	Gross PP&E		Accum. D&A	Net PP&E	Gross PP&E	Accum. D&A	Net PP&E
Midstream	$	12,184	2,796	9,388	12,313	2,815	9,498
Chemicals	—		—	—	—	—	—
Refining	25,095		12,351	12,744	24,647	12,019	12,628
Marketing and Specialties	1,770		994	776	1,815	1,007	808
Corporate and Other	1,455		686	769	1,448	666	782
	$	40,504	16,827	23,677	40,223	16,507	23,716

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Note 7—Impairments

	Millions of Dollars
	Three Months Ended March 31
	2021		2020
Midstream	$	198	1,161
Refining	—		1,845
Total impairments	$	198	3,006

Equity Investments

Liberty

In the first quarter of 2021, Phillips 66 Partners decided to exit the Liberty Pipeline project, which had previously been deferred due to the challenging business environment caused by the COVID-19 pandemic. As a result, Phillips 66 Partners recorded a $198 million before-tax impairment to reduce the book value of its investment in Liberty at March 31, 2021, to estimated fair value.

DCP Midstream, LLC (DCP Midstream)

In the first quarter of 2020, the market value of DCP Partners, LP (DCP Partners) common units declined by approximately 85%. As a result, at March 31, 2020, the fair value of our investment in DCP Midstream was significantly lower than its book value. We concluded this difference was not temporary primarily due to its magnitude, and we recorded a $1,161 million before-tax impairment of our investment in the first quarter of 2020.

Goodwill

Our stock price declined significantly in the first quarter of 2020, mainly due to the disruption in global commodity and equity markets related to the COVID-19 pandemic. We assessed our goodwill for impairment due to the decline in our market capitalization and concluded that the carrying value of our Refining reporting unit at March 31, 2020, was greater than its fair value by an amount in excess of its goodwill balance. Accordingly, we recorded a before-tax goodwill impairment charge of $1,845 million in our Refining segment during the first quarter of 2020.

These impairment charges are included within the “Impairments” line item on our consolidated statement of operations. See Note 13—Fair Value Measurements, for additional information on the determination of fair value used to record these impairments.

Outlook

The COVID-19 pandemic continues to disrupt economic activities globally. Reduced demand for petroleum products has resulted in low refining margins and decreased volumes through refineries and logistics infrastructure. Demand for refined petroleum products started to recover following the distribution of COVID-19 vaccines at the beginning of 2021, and consequently, refining margins have improved. However, the depth and duration of the economic consequences of the COVID-19 pandemic remain uncertain. We continuously monitor our asset and investment portfolio for impairments, as well as optimization opportunities, in this challenging business environment. As such, additional impairments may be required in the future.

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Note 8—Earnings (Loss) Per Share

The numerator of basic earnings (loss) per share (EPS) is net income (loss) attributable to Phillips 66, adjusted for noncancelable dividends paid on unvested share-based employee awards during the vesting period (participating securities). The denominator of basic EPS is the sum of the daily weighted-average number of common shares outstanding during the periods presented and fully vested stock and unit awards that have not yet been issued as common stock. The numerator of diluted EPS is also based on net income (loss) attributable to Phillips 66, which is reduced only by dividend equivalents paid on participating securities for which the dividends are more dilutive than the participation of the awards in the earnings (loss) of the periods presented. To the extent unvested stock, unit or option awards and vested unexercised stock options are dilutive, they are included with the weighted-average common shares outstanding in the denominator. Treasury stock is excluded from the denominator in both basic and diluted EPS.

	Three Months Ended March 31
	2021			2020
	Basic		Diluted	Basic	Diluted
Amounts Attributed to Phillips 66 Common Stockholders (millions):
Net loss attributable to Phillips 66	$	(654)	(654)	(2,496)	(2,496)
Income allocated to participating securities	(2)		(2)	(1)	(1)
Net loss available to common stockholders	$	(656)	(656)	(2,497)	(2,497)
Weighted-average common shares outstanding (thousands):	437,369		439,504	439,014	441,345
Effect of share-based compensation	2,135		—	2,331	—
Weighted-average common shares outstanding—EPS	439,504		439,504	441,345	441,345
Loss Per Share of Common Stock (dollars)	$	(1.49)	(1.49)	(5.66)	(5.66)

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Note 9—Debt

2021 Debt Issuances and Repayments

At March 31, 2021, borrowings of $450 million were outstanding and $1 million in letters of credit had been drawn under Phillips 66 Partners’ $750 million revolving credit facility.

In April 2021, Phillips 66 Partners entered into a $450 million term loan agreement and borrowed the full amount. The term loan agreement has a maturity date of April 5, 2022, and the outstanding borrowings can be repaid at any time and from time to time, in whole or in part, without premium or penalty. Borrowings bear interest at a floating rate based on either a Eurodollar rate or a reference rate, plus a margin of 0.875%. Proceeds were primarily used to repay amounts borrowed under Phillips 66 Partners’ $750 million revolving credit facility.

In February 2021, Phillips 66 repaid $500 million outstanding principal balance of its floating-rate senior notes due February 2021.

2020 Term Loan Facility

On March 19, 2020, Phillips 66 entered into a $1 billion 364-day delayed draw term loan agreement (the Facility) and borrowed $1 billion under the Facility shortly thereafter. On April 6, 2020, Phillips 66 increased the size of the Facility to $2 billion, and in June 2020, the Facility was amended to extend the commitment period to September 19, 2020. We did not draw additional amounts under the Facility before the end of the commitment period or further extend the commitment period. In November 2020, we repaid $500 million of borrowings outstanding under the Facility, and the Facility was amended to extend the maturity date of the remaining $500 million outstanding borrowings from March 18, 2021, to November 20, 2023. Borrowings under the Facility bear interest at a floating rate based on either a Eurodollar rate or a reference rate, plus a margin determined by the credit rating of Phillips 66’s senior unsecured long-term debt. Phillips 66 used the proceeds for general corporate purposes.

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Note 10—Guarantees

At March 31, 2021, we were liable for certain contingent obligations under various contractual arrangements as described below. We recognize a liability for the fair value of our obligation as a guarantor for newly issued or modified guarantees. Unless the carrying amount of the liability is noted below, we have not recognized a liability either because the guarantees were issued prior to December 31, 2002, or because the fair value of the obligation is immaterial. In addition, unless otherwise stated, we are not currently performing with any significance under the guarantees and expect future performance to be either immaterial or have only a remote chance of occurrence.

Lease Residual Value Guarantees

Under the operating lease agreement for our headquarters facility in Houston, Texas, we have the option, at the end of the lease term in September 2025, to request to renew the lease, purchase the facility or assist the lessor in marketing it for resale. We have a residual value guarantee associated with the operating lease agreement with a maximum potential future exposure of $514 million at March 31, 2021. We also have residual value guarantees associated with railcar and airplane leases with maximum potential future payments totaling $371 million. These operating leases have remaining terms of up to nine years.

Guarantees of Joint Venture and Other Obligations

In March 2019, Phillips 66 Partners and its co-venturers in Dakota Access provided a CECU in conjunction with a senior unsecured notes offering. See Note 5—Investments, Loans and Long-Term Receivables, for additional information on Dakota Access and the CECU.

At March 31, 2021, we also had other guarantees outstanding for our portion of certain joint venture debt and purchase obligations, which have remaining terms of up to seven years. The maximum potential amount of future payments to third parties under these guarantees was approximately $197 million. Payment would be required if a joint venture defaults on its obligations.

Indemnifications

Over the years, we have entered into various agreements to sell ownership interests in certain corporations, joint ventures and assets that gave rise to indemnification. Agreements associated with these sales include indemnifications for taxes, litigation, environmental liabilities, permits and licenses, employee claims, and real estate tenant defaults. The provisions of these indemnifications vary greatly. The majority of these indemnifications are related to environmental issues, which generally have indefinite terms and potentially unlimited exposure. The carrying amount of recorded indemnifications was $145 million at both March 31, 2021, and December 31, 2020.

We amortize the indemnification liability over the relevant time period, if one exists, based on the facts and circumstances surrounding each type of indemnity. In cases where the indemnification term is indefinite, we will reverse the liability when we have information to support the reversal. Although it is reasonably possible future payments may exceed amounts recorded, due to the nature of the indemnifications, it is not possible to make a reasonable estimate of the maximum potential amount of future payments. At March 31, 2021, and December 31, 2020, environmental accruals for known contamination of $103 million and $104 million, respectively, were included in the carrying amount of the recorded indemnifications noted above. These environmental accruals were primarily included in the “Asset retirement obligations and accrued environmental costs” line item on our consolidated balance sheet. For additional information about environmental liabilities, see Note 11—Contingencies and Commitments.

Indemnification and Release Agreement

In 2012, in connection with our separation from ConocoPhillips, we entered into an Indemnification and Release Agreement. This agreement governs the treatment between ConocoPhillips and us of matters relating to indemnification, insurance, litigation responsibility and management, and litigation document sharing and cooperation arising in connection with the separation. Generally, the agreement provides for cross indemnities principally designed to place financial responsibility for the obligations and liabilities of our business with us and financial responsibility for the obligations and liabilities of ConocoPhillips’ business with ConocoPhillips. The agreement also establishes procedures for handling claims subject to indemnification and related matters.

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Note 11—Contingencies and Commitments

A number of lawsuits involving a variety of claims that arose in the ordinary course of business have been filed against us or are subject to indemnifications provided by us. We also may be required to remove or mitigate the effects on the environment of the placement, storage, disposal or release of certain chemical, mineral and petroleum substances at various active and inactive sites. We regularly assess the need for financial recognition or disclosure of these contingencies. In the case of all known contingencies (other than those related to income taxes), we accrue a liability when the loss is probable and the amount is reasonably estimable. If a range of amounts can be reasonably estimated and no amount within the range is a better estimate than any other amount, then the minimum of the range is accrued. We do not reduce these liabilities for potential insurance or third-party recoveries. If applicable, we accrue receivables for probable insurance or other third-party recoveries. In the case of income tax-related contingencies, we use a cumulative probability-weighted loss accrual in cases where sustaining a tax position is uncertain.

Based on currently available information, we believe it is remote that future costs related to known contingent liability exposures will exceed current accruals by an amount that would have a material adverse impact on our consolidated financial statements. As we learn new facts concerning contingencies, we reassess our position both with respect to accrued liabilities and other potential exposures. Estimates particularly sensitive to future changes include contingent liabilities recorded for environmental remediation, tax and legal matters. Estimated future environmental remediation costs are subject to change due to such factors as the uncertain magnitude of cleanup costs, the unknown time and extent of such remedial actions that may be required, and the determination of our liability in proportion to that of other potentially responsible parties. Estimated future costs related to tax and legal matters are subject to change as events evolve and as additional information becomes available during the administrative and litigation processes.

Environmental

We are subject to international, federal, state and local environmental laws and regulations. When we prepare our consolidated financial statements, we record accruals for environmental liabilities based on management’s best estimates, using information available at the time. We measure estimates and base contingent liabilities on currently available facts, existing technology and presently enacted laws and regulations, taking into account stakeholder and business considerations. When measuring contingent environmental liabilities, we also consider our prior experience in remediation of contaminated sites, other companies’ cleanup experience, and data released by the EPA or other organizations. We consider unasserted claims in our determination of environmental liabilities, and we accrue them in the period they are both probable and reasonably estimable.

Although liability for environmental remediation costs is generally joint and several for federal sites and frequently so for state sites, we are usually only one of many companies alleged to have liability at a particular site. Due to such joint and several liabilities, we could be responsible for all cleanup costs related to any site at which we have been designated as a potentially responsible party. We have been successful to date in sharing cleanup costs with other financially sound companies. Many of the sites for which we are potentially responsible are still under investigation by the EPA or the state agencies concerned. Prior to actual cleanup, those potentially responsible normally assess the site conditions, apportion responsibility and determine the appropriate remediation. In some instances, we may have no liability or may attain a settlement of liability. Where it appears that other potentially responsible parties may be financially unable to bear their proportional share, we consider this inability in estimating our potential liability, and we adjust our accruals accordingly. As a result of various acquisitions in the past, we assumed certain environmental obligations. Some of these environmental obligations are mitigated by indemnifications made by others for our benefit, although some of the indemnifications are subject to dollar and time limits.

We are currently participating in environmental assessments and cleanups at numerous federal Superfund and comparable state sites. After an assessment of environmental exposures for cleanup and other costs, we make accruals on an undiscounted basis (except those pertaining to sites acquired in a business combination, which we record on a discounted basis) for planned investigation and remediation activities for sites where it is probable future costs will be incurred and these costs can be reasonably estimated. At March 31, 2021, our total environmental accruals were $437 million, compared with $427 million at December 31, 2020. We expect to incur a substantial amount of these expenditures within the next 30 years. We have not reduced these accruals for possible insurance recoveries. In the future, we may be involved in additional environmental assessments, cleanups and proceedings.

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Legal Proceedings

Our legal organization applies its knowledge, experience and professional judgment to the specific characteristics of our cases, employing a litigation management process to manage and monitor the legal proceedings against us. Our process facilitates the early evaluation and quantification of potential exposures in individual cases and enables the tracking of those cases that have been scheduled for trial and/or mediation. Based on professional judgment and experience in using these litigation management tools and available information about current developments in all our cases, our legal organization regularly assesses the adequacy of current accruals and determines if adjustment of existing accruals, or establishment of new accruals, is required.

Other Contingencies

We have contingent liabilities resulting from throughput agreements with pipeline and processing companies not associated with financing arrangements. Under these agreements, we may be required to provide any such company with additional funds through advances and penalties for fees related to throughput capacity not utilized.

At March 31, 2021, we had performance obligations secured by letters of credit and bank guarantees of $791 million related to various purchase and other commitments incident to the ordinary conduct of business.

Note 12—Derivatives and Financial Instruments

Derivative Instruments

We use financial and commodity-based derivative contracts to manage exposures to fluctuations in commodity prices, interest rates and foreign currency exchange rates, or to capture market opportunities. Because we do not apply hedge accounting for commodity derivative contracts, all realized and unrealized gains and losses from commodity derivative contracts are recognized in our consolidated statement of operations. Gains and losses from derivative contracts held for trading not directly related to our physical business are reported net in the “Other income” line item on our consolidated statement of operations. Cash flows from all our derivative activity for the periods presented appear in the operating section on our consolidated statement of cash flows.

Purchase and sales contracts with firm minimum notional volumes for commodities that are readily convertible to cash are recorded on our consolidated balance sheet as derivatives unless the contracts are eligible for, and we elect, the normal purchases and normal sales exception, whereby the contracts are recorded on an accrual basis. We generally apply the normal purchases and normal sales exception to eligible crude oil, refined petroleum product, NGL, natural gas and power commodity contracts to purchase or sell quantities we expect to use or sell in the normal course of business. All other derivative instruments are recorded at fair value on our consolidated balance sheet. For further information on the fair value of derivatives, see Note 13—Fair Value Measurements.

Commodity Derivative Contracts—We sell into or receive supply from the worldwide crude oil, refined petroleum product, NGL, natural gas and electric power markets, exposing our revenues, purchases, cost of operating activities and cash flows to fluctuations in the prices for these commodities. Generally, our policy is to remain exposed to the market prices of commodities; however, we use futures, forwards, swaps and options in various markets to balance physical systems, meet customer needs, manage price exposures on specific transactions, and do a limited amount of trading not directly related to our physical business, all of which may reduce our exposure to fluctuations in market prices. We also use the market knowledge gained from these activities to capture market opportunities such as moving physical commodities to more profitable locations, storing commodities to capture seasonal or time premiums, and blending commodities to capture quality upgrades.

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The following table indicates the consolidated balance sheet line items that include the fair values of commodity derivative assets and liabilities. The balances in the following table are presented on a gross basis, before the effects of counterparty and collateral netting. However, we have elected to present our commodity derivative assets and liabilities with the same counterparty on a net basis on our consolidated balance sheet when the legal right of offset exists.

	Millions of Dollars
	March 31, 2021					December 31, 2020
	Commodity Derivatives			Effect of Collateral Netting	Net Carrying Value Presented on the Balance Sheet	Commodity Derivatives		Effect of Collateral Netting	Net Carrying Value Presented on the Balance Sheet
	Assets		Liabilities			Assets	Liabilities
Assets
Prepaid expenses and other current assets	$	652	(595)	(8)	49	13	—	—	13
Other assets	17		(16)	—	1	5	(4)	—	1
Liabilities
Other accruals	437		(529)	78	(14)	665	(721)	46	(10)
Total	$	1,106	(1,140)	70	36	683	(725)	46	4

At March 31, 2021, and December 31, 2020, there was no material cash collateral received or paid that was not offset on our consolidated balance sheet.

The realized and unrealized gains (losses) incurred from commodity derivatives, and the line items where they appear on our consolidated statement of operations, were:

	Millions of Dollars
	Three Months Ended March 31
	2021		2020
Sales and other operating revenues	$	(123)	679
Other income	1		3
Purchased crude oil and products	(135)		441
Net gain (loss) from commodity derivative activity	$	(257)	1,123

The following table summarizes our material net exposures resulting from outstanding commodity derivative contracts. These financial and physical derivative contracts are primarily used to manage price exposure on our underlying operations. The underlying exposures may be from nonderivative positions such as inventory volumes. Financial derivative contracts may also offset physical derivative contracts, such as forward purchase and sales contracts. The percentage of our derivative contract volumes expiring within the next 12 months was more than 95% at March 31, 2021, and December 31, 2020.

	Open Position Long / (Short)
	March 31 2021	December 31 2020
Commodity
Crude oil, refined petroleum products and NGL (millions of barrels)	(25)	(13)

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Interest Rate Derivative Contracts—In 2016, we entered into interest rate swaps to hedge the variability of lease payments on our headquarters facility. These monthly lease payments vary based on monthly changes in the one-month London Interbank Offered Rate (LIBOR) and changes, if any, in our credit rating. The pay-fixed, receive-floating interest rate swaps have an aggregate notional value of $650 million and ended in April 2021. We have designated these swaps as cash flow hedges.

The aggregate net fair value of these swaps was immaterial at March 31, 2021, and December 31, 2020. We report the mark-to-market gains or losses on our interest rate swaps designated as highly effective cash flow hedges as a component of other comprehensive income (loss), and reclassify such gains and losses into earnings (loss) in the same period during which the hedged transaction affects earnings (loss). Net realized gains and losses from settlements of the swaps were immaterial for the three months ended March 31, 2021 and 2020.

Credit Risk from Derivative Instruments

The credit risk from our derivative contracts, such as forwards and swaps, derives from the counterparty to the transaction. Individual counterparty exposure is managed within predetermined credit limits and includes the use of cash-call margins when appropriate, thereby reducing the risk of significant nonperformance. We also use futures, swaps and option contracts that have a negligible credit risk because these trades are cleared with an exchange clearinghouse and subject to mandatory margin requirements, typically on a daily basis, until settled.

Certain of our derivative instruments contain provisions that require us to post collateral if the derivative exposure exceeds a threshold amount. We have contracts with fixed threshold amounts and other contracts with variable threshold amounts that are contingent on our credit rating. The variable threshold amounts typically decline for lower credit ratings, while both the variable and fixed threshold amounts typically revert to zero if our credit ratings fall below investment grade. Cash is the primary collateral in all contracts; however, many contracts also permit us to post letters of credit as collateral.

The aggregate fair values of all derivative instruments with such credit-risk-related contingent features that were in a liability position were immaterial at March 31, 2021, and December 31, 2020.

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Note 13—Fair Value Measurements

Recurring Fair Value Measurements

We carry certain assets and liabilities at fair value, which we measure at the reporting date using the price that would be received to sell an asset or paid to transfer a liability (i.e., an exit price), and disclose the quality of these fair values based on the valuation inputs used in these measurements under the following hierarchy:

•Level 1: Fair value measured with unadjusted quoted prices from an active market for identical assets or liabilities.

•Level 2: Fair value measured either with: (1) adjusted quoted prices from an active market for similar assets or liabilities; or (2) other valuation inputs that are directly or indirectly observable.

•Level 3: Fair value measured with unobservable inputs that are significant to the measurement.

We classify the fair value of an asset or liability based on the significance of its observable or unobservable inputs to the measurement. However, the fair value of an asset or liability initially reported as Level 3 will be subsequently reported as Level 2 if the unobservable inputs become inconsequential to its measurement or corroborating market data becomes available. Conversely, an asset or liability initially reported as Level 2 will be subsequently reported as Level 3 if corroborating market data becomes unavailable.

We used the following methods and assumptions to estimate the fair value of financial instruments:

•Cash and cash equivalents—The carrying amount reported on our consolidated balance sheet approximates fair value.

•Accounts and notes receivable—The carrying amount reported on our consolidated balance sheet approximates fair value.

•Derivative instruments—We fair value our exchange-traded contracts based on quoted market prices obtained from the New York Mercantile Exchange, the Intercontinental Exchange or other exchanges, and classify them as Level 1 in the fair value hierarchy. When exchange-cleared contracts lack sufficient liquidity, or are valued using either adjusted exchange-provided prices or nonexchange quotes, we classify those contracts as Level 2.

Physical commodity forward purchase and sales contracts and over-the-counter (OTC) financial swaps are generally valued using forward quotes provided by brokers and price index developers, such as Platts and Oil Price Information Service. We corroborate these quotes with market data and classify the resulting fair values as Level 2. When forward market prices are not available, we estimate fair value using the forward price of a similar commodity, adjusted for the difference in quality or location. In certain less liquid markets or for longer-term contracts, forward prices are not as readily available. In these circumstances, physical commodity purchase and sales contracts and OTC swaps are valued using internally developed methodologies that consider historical relationships among various commodities that result in management’s best estimate of fair value. We classify these contracts as Level 3. Physical and OTC commodity options are valued using industry-standard models that consider various assumptions, including quoted forward prices for commodities, time value, volatility factors and contractual prices for the underlying instruments, as well as other relevant economic measures. The degree to which these inputs are observable in the forward markets determines whether the options are classified as Level 2 or 3. We use a midmarket pricing convention (the midpoint between bid and ask prices). When appropriate, valuations are adjusted to reflect credit considerations, generally based on available market evidence.

We determine the fair value of our interest rate swaps based on observable market valuations for interest rate swaps that have notional amounts, terms and pay and reset frequencies similar to ours.

•Rabbi trust assets—These deferred compensation investments are measured at fair value using unadjusted quoted prices available from national securities exchanges and are therefore categorized as Level 1 in the fair value hierarchy.

•Debt—The carrying amount of our floating-rate debt approximates fair value. The fair value of our fixed-rate debt is estimated based on observable market prices.

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The following tables display the fair value hierarchy for our financial assets and liabilities either accounted for or disclosed at fair value on a recurring basis. These values are determined by treating each contract as the fundamental unit of account; therefore, derivative assets and liabilities with the same counterparty are shown on a gross basis in the hierarchy sections of these tables, before the effects of counterparty and collateral netting. The following tables also reflect the effect of netting derivative assets and liabilities with the same counterparty for which we have the legal right of offset and collateral netting.

The carrying values and fair values by hierarchy of our financial assets and liabilities, either carried or disclosed at fair value, including any effects of counterparty and collateral netting, were:

	Millions of Dollars
	March 31, 2021
	Fair Value Hierarchy				Total Fair Value of Gross Assets & Liabilities	Effect of Counterparty Netting	Effect of Collateral Netting	Difference in Carrying Value and Fair Value	Net Carrying Value Presented on the Balance Sheet
	Level 1		Level 2	Level 3
Commodity Derivative Assets
Exchange-cleared instruments	$	746	337	—	1,083	(1,048)	(8)	—	27
Physical forward contracts	—		23	—	23	—	—	—	23
Rabbi trust assets	150		—	—	150	N/A	N/A	—	150
	$	896	360	—	1,256	(1,048)	(8)	—	200
Commodity Derivative Liabilities
Exchange-cleared instruments	$	794	332	—	1,126	(1,048)	(78)	—	—
OTC instruments	—		1	—	1	—	—	—	1
Physical forward contracts	—		13	—	13	—	—	—	13
Interest-rate derivatives	—		1	—	1	—	—	—	1
Floating-rate debt	—		1,475	—	1,475	N/A	N/A	—	1,475
Fixed-rate debt, excluding finance leases	—		15,064	—	15,064	N/A	N/A	(1,391)	13,673
	$	794	16,886	—	17,680	(1,048)	(78)	(1,391)	15,163

	Millions of Dollars
	December 31, 2020
	Fair Value Hierarchy				Total Fair Value of Gross Assets & Liabilities	Effect of Counterparty Netting	Effect of Collateral Netting	Difference in Carrying Value and Fair Value	Net Carrying Value Presented on the Balance Sheet
	Level 1		Level 2	Level 3
Commodity Derivative Assets
Exchange-cleared instruments	$	314	356	—	670	(669)	—	—	1
Physical forward contracts	—		13	—	13	—	—	—	13
Rabbi trust assets	143		—	—	143	N/A	N/A	—	143
	$	457	369	—	826	(669)	—	—	157
Commodity Derivative Liabilities
Exchange-cleared instruments	$	351	364	—	715	(669)	(46)	—	—
Physical forward contracts	—		10	—	10	—	—	—	10
Interest-rate derivatives	—		3	—	3	—	—	—	3
Floating-rate debt	—		1,940	—	1,940	N/A	N/A	—	1,940
Fixed-rate debt, excluding finance leases	—		15,597	—	15,597	N/A	N/A	(1,927)	13,670
	$	351	17,914	—	18,265	(669)	(46)	(1,927)	15,623

The rabbi trust assets are recorded in the “Investments and long-term receivables” line item, and floating-rate and fixed-rate debt are recorded in the “Short-term debt” and “Long-term debt” line items on our consolidated balance sheet. See Note 12—Derivatives and Financial Instruments, for information regarding where the assets and liabilities related to our commodity and interest rate derivatives are recorded on our consolidated balance sheet.

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Nonrecurring Fair Value Measurements

Equity Investments

In the first quarter of 2021, Phillips 66 Partners wrote down the book value of its investment in Liberty to estimated fair value using a Level 3 nonrecurring fair value measurement. This nonrecurring measurement was based on the estimated fair value of Phillip 66 Partners’ share of the joint venture’s pipeline assets and net working capital. See Note 5—Investments, Loans and Long-Term Receivables, for more information regarding Phillips 66 Partners’ transfer of its ownership in Liberty to its co-venturer in April 2021.

In the first quarter of 2020, the nonrecurring fair value measurement used to record an impairment of our DCP Midstream investment was the fair value of our share of DCP Midstream’s limited partner interest in DCP Partners, which was estimated based on average market prices of DCP Partners common units for a multi-day trading period encompassing March 31, 2020. This valuation resulted in a Level 2 nonrecurring fair value measurement.

Goodwill

The carrying value of the Refining reporting unit’s goodwill was remeasured to fair value on a nonrecurring basis in the first quarter of 2020.  The fair value of the Refining reporting unit was calculated by weighting the results from the income approach and the market approach.  The income approach used a discounted cash flow model that included various observable and nonobservable inputs, such as prices, volumes, expenses, capital expenditures, discount rates and projected long-term growth rates and terminal values. The market approach used peer company enterprise values relative to current and future net income (loss) before net interest expense, income taxes, depreciation and amortization (EBITDA) projections to arrive at an average multiple.  This multiple was applied to the reporting unit’s current and projected EBITDA, with consideration for an estimated market participant acquisition premium.  The resulting Level 3 fair value estimate was less than the Refining reporting unit’s carrying value by an amount that exceeded the existing goodwill balance of the reporting unit.  As a result, the Refining reporting unit’s goodwill was impaired to zero. As part of our impairment analysis, the fair value of all reporting units was reconciled to the company’s market capitalization.

See Note 7—Impairments, for additional information on the above impairments.

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Note 14—Pension and Postretirement Plans

The components of net periodic benefit cost for the three months ended March 31, 2021 and 2020, were as follows:

	Millions of Dollars
	Pension Benefits					Other Benefits
	2021			2020		2021	2020
	U.S.		Int’l.	U.S.	Int’l.
Components of Net Periodic Benefit Cost
Three Months Ended March 31
Service cost	$	37	9	33	7	1	1
Interest cost	20		5	25	6	1	2
Expected return on plan assets	(41)		(15)	(41)	(13)	—	—
Amortization of prior service credit	—		—	—	—	(1)	(1)
Recognized net actuarial loss	15		6	14	4	—	—
Net periodic benefit cost*	$	31	5	31	4	1	2
* Included in the “Operating expenses” and “Selling, general and administrative expenses” line items on our consolidated statement of operations.

During the three months ended March 31, 2021, we contributed $5 million to our U.S. pension and other postretirement benefit plans and $7 million to our international pension plans. We currently expect to make additional contributions of approximately $35 million to our U.S. pension and other postretirement benefit plans and $23 million to our international pension plans during the remainder of 2021.

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Note 15—Accumulated Other Comprehensive Loss

Changes in the balances of each component of accumulated other comprehensive loss were as follows:

	Millions of Dollars
	Defined Benefit Plans		Foreign Currency Translation	Hedging	Accumulated Other Comprehensive Loss
December 31, 2020	$	(809)	25	(5)	(789)
Other comprehensive income (loss) before reclassifications	5		(15)	—	(10)
Amounts reclassified from accumulated other comprehensive loss
Defined benefit plans*
Amortization of net actuarial loss and prior service credit	17		—	—	17
Foreign currency translation	—		—	—	—
Hedging	—		—	2	2
Net current period other comprehensive income (loss)	22		(15)	2	9
March 31, 2021	$	(787)	10	(3)	(780)
December 31, 2019	$	(656)	(131)	(1)	(788)
Other comprehensive income (loss) before reclassifications	1		(221)	(7)	(227)
Amounts reclassified from accumulated other comprehensive loss
Defined benefit plans*
Amortization of net actuarial loss and prior service credit	19		—	—	19
Foreign currency translation	—		—	—	—
Hedging	—		—	—	—
Net current period other comprehensive income (loss)	20		(221)	(7)	(208)
Other	—		5	—	5
March 31, 2020	$	(636)	(347)	(8)	(991)
* Included in the computation of net periodic benefit cost. See Note 14—Pension and Postretirement Plans, for additional information.

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Note 16—Related Party Transactions

Significant transactions with related parties were:

	Millions of Dollars
	Three Months Ended March 31
	2021		2020
Operating revenues and other income (a)	$	770	534
Purchases (b)	2,357		2,126
Operating expenses and selling, general and administrative expenses (c)	68		51

(a)We sold NGL, other petrochemical feedstocks and solvents to Chevron Phillips Chemical Company LLC (CPChem), NGL and certain feedstocks to DCP Midstream, gas oil and hydrogen feedstocks to Excel Paralubes (Excel), and refined petroleum products to several of our equity affiliates in the Marketing and Specialties segment, including OnCue and CF United. We also sold certain feedstocks and intermediate products to WRB and acted as an agent for WRB in supplying crude oil and other feedstocks for a fee. In addition, we charged several of our equity affiliates, including CPChem, for the use of common facilities, such as steam generators, waste and water treaters and warehouse facilities.

(b)We purchased crude oil, refined petroleum products, NGL and solvents from WRB. We also purchased natural gas and NGL from DCP Midstream and CPChem, as well as other feedstocks from various equity affiliates, for use in our refinery and fractionation processes. In addition, we purchased base oils and fuel products from Excel for use in our specialty and refining businesses. We paid NGL fractionation fees to CPChem. We also paid fees to various pipeline equity affiliates for transporting crude oil, refined petroleum products and NGL.

(c)We paid consignment fees to CF United, and utility and processing fees to various equity affiliates.

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Note 17—Segment Disclosures and Related Information

Our operating segments are:

1)Midstream—Provides crude oil and refined petroleum product transportation, terminaling and processing services, as well as natural gas and NGL transportation, storage, fractionation, processing, and marketing services, mainly in the United States. The Midstream segment includes our master limited partnership (MLP), Phillips 66 Partners, as well as our 50% equity investment in DCP Midstream.

2)Chemicals—Consists of our 50% equity investment in CPChem, which manufactures and markets petrochemicals and plastics on a worldwide basis.

3)Refining—Refines crude oil and other feedstocks into petroleum products, such as gasoline, distillates and aviation fuels, at 13 refineries in the United States and Europe.

4)Marketing and Specialties—Purchases for resale and markets refined petroleum products, mainly in the United States and Europe. In addition, this segment includes the manufacturing and marketing of specialty products.

Corporate and Other includes general corporate overhead, interest expense, our investment in new technologies, and various other corporate activities. Corporate assets include all cash, cash equivalents and income tax-related assets.

Intersegment sales are at prices that we believe approximate market.

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Analysis of Results by Operating Segment

	Millions of Dollars
	Three Months Ended March 31
	2021		2020
Sales and Other Operating Revenues*
Midstream
Total sales	$	2,384	1,538
Intersegment eliminations	(627)		(495)
Total Midstream	1,757		1,043
Chemicals	1		1
Refining
Total sales	15,053		13,781
Intersegment eliminations	(8,456)		(7,633)
Total Refining	6,597		6,148
Marketing and Specialties
Total sales	13,598		14,249
Intersegment eliminations	(333)		(570)
Total Marketing and Specialties	13,265		13,679
Corporate and Other	7		7
Consolidated sales and other operating revenues	$	21,627	20,878
* See Note 2—Sales and Other Operating Revenues, for further details on our disaggregated sales and other operating revenues.
Income (Loss) Before Income Taxes
Midstream	$	76	(702)
Chemicals	154		169
Refining	(1,040)		(2,261)
Marketing and Specialties	290		513
Corporate and Other	(251)		(197)
Consolidated loss before income taxes	$	(771)	(2,478)

	Millions of Dollars
	March 31 2021		December 31 2020
Total Assets
Midstream	$	15,296	15,596
Chemicals	6,133		6,183
Refining	21,893		20,404
Marketing and Specialties	7,962		7,180
Corporate and Other	4,212		5,358
Consolidated total assets	$	55,496	54,721

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Note 18—Income Taxes

Our effective income tax rate for the three months ended March 31, 2021, was 17%, compared with 2% for the corresponding period of 2020. The increase in our effective tax rate for the three months ended March 31, 2021, was primarily attributable to the current-year impact of our foreign operations and income attributable to noncontrolling interests and the prior-year impact of a nondeductible goodwill impairment and a net operating loss carryback to a year with a 35% tax rate.

The effective income tax rate for the three months ended March 31, 2021, varied from the U.S. federal statutory income tax rate of 21%, primarily due to foreign operations and income attributable to noncontrolling interests.

An income tax receivable of $1.5 billion, which reflects tax refunds we expect to receive within the next 12 months, is included in the “Accounts and notes receivable” line item on our consolidated balance sheet as of March 31, 2021.

Note 19—Phillips 66 Partners LP

Phillips 66 Partners, headquartered in Houston, Texas, is a publicly traded MLP formed in 2013 to own, operate, develop and acquire primarily fee-based midstream assets. Phillips 66 Partners’ operations currently consist of crude oil, refined petroleum product and NGL transportation, fractionation, processing, terminaling, and storage assets.

We consolidate Phillips 66 Partners because we determined it is a VIE of which we are the primary beneficiary. As general partner of Phillips 66 Partners, we have the ability to control its financial interests, as well as the ability to direct the activities that most significantly impact its economic performance. As a result of this consolidation, the public common and perpetual convertible preferred unitholders’ ownership interests in Phillips 66 Partners are reflected as noncontrolling interests in our financial statements. At March 31, 2021, we owned 170 million Phillips 66 Partners common units, representing a 74% limited partner interest in Phillips 66 Partners, while the public owned a 26% limited partner interest and 13.8 million perpetual convertible preferred units.

The most significant assets of Phillips 66 Partners that are available to settle only its obligations, along with its most significant liabilities for which its creditors do not have recourse to Phillips 66’s general credit, were:

	Millions of Dollars
	March 31 2021		December 31 2020
Equity investments*	$	3,029	3,244
Net properties, plants and equipment	3,646		3,639
Short-term debt	500		465
Long-term debt	3,444		3,444
* Included in the “Investments and long-term receivables” line item on the Phillips 66 consolidated balance sheet.

See Note 5—Investments, Loans and Long-Term Receivables, for further discussion regarding Phillips 66 Partners’ investments in Dakota Access and ETCO, and Liberty.

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

Unless otherwise indicated, “the company,” “we,” “our,” “us” and “Phillips 66” are used in this report to refer to the businesses of Phillips 66 and its consolidated subsidiaries.

Management’s Discussion and Analysis is the company’s analysis of its financial performance, financial condition, and significant trends that may affect future performance. It should be read in conjunction with the consolidated financial statements and notes included elsewhere in this report. It contains forward-looking statements including, without limitation, statements relating to the company’s plans, strategies, objectives, expectations and intentions that are made pursuant to the “safe harbor” provisions of the Private Securities Litigation Reform Act of 1995. The words “anticipate,” “estimate,” “believe,” “budget,” “continue,” “could,” “intend,” “may,” “plan,” “potential,” “predict,” “seek,” “should,” “will,” “would,” “expect,” “objective,” “projection,” “forecast,” “goal,” “guidance,” “outlook,” “effort,” “target” and similar expressions often identify forward-looking statements, but the absence of these words does not mean a statement is not forward-looking. The company does not undertake to update, revise or correct any of the forward-looking information unless required to do so under the federal securities laws. Readers are cautioned that such forward-looking statements should be read in conjunction with the company’s disclosures under the heading: “CAUTIONARY STATEMENT FOR THE PURPOSES OF THE ‘SAFE HARBOR’ PROVISIONS OF THE PRIVATE SECURITIES LITIGATION REFORM ACT OF 1995.”

The terms “earnings” and “loss” as used in Management’s Discussion and Analysis refer to net income (loss) attributable to Phillips 66. The terms “results,” “before-tax income” or “before-tax loss” as used in Management’s Discussion and Analysis refer to income (loss) before income taxes.

EXECUTIVE OVERVIEW AND BUSINESS ENVIRONMENT

Phillips 66 is an energy manufacturing and logistics company with midstream, chemicals, refining, and marketing and specialties businesses. At March 31, 2021, we had total assets of $55.5 billion. Our common stock trades on the New York Stock Exchange under the symbol PSX.

Executive Overview

The Coronavirus Disease 2019 (COVID-19) pandemic continues to disrupt economic activities globally. Actions taken by governments to prevent the spread of the disease, including travel and business restrictions, have resulted in substantial decreases in the demand for many refined petroleum products, particularly gasoline and jet fuel. Demand for refined petroleum products started to recover following the distribution of COVID-19 vaccines at the beginning of 2021, and consequently, refining margins have improved. Ongoing market discipline of OPEC producers has reduced excess supplies of crude oil and the current balance has supported higher crude oil and natural gas liquids (NGL) prices. During the first quarter of 2021, winter storms significantly impacted refining, midstream and chemical operations in the Central and Gulf Coast regions, which resulted in lower asset utilization, as well as higher costs.

In the first quarter of 2021, we reported a loss of $654 million and generated cash from operating activities of $271 million. We used available cash for capital expenditures and investments of $331 million, repayment of $500 million of maturing debt, dividend payments on our common stock of $394 million, and an additional member loan to an equity affiliate of $155 million. We ended the first quarter of 2021 with $1.4 billion of cash and cash equivalents and approximately $5.3 billion of total committed capacity available under our revolving credit facilities.

Our results in the first quarter of 2021 reflect the adverse effects of the COVID-19 pandemic and severe winter storms that occurred in the Central and Gulf Coast regions in February 2021. The adverse effects of the COVID-19 pandemic may continue to be significant in the near term, and the depth and duration of the resulting economic consequences remain unknown. We continuously monitor our asset and investment portfolio for impairments, as well as optimization opportunities, in this challenging business environment. As such, additional asset and investment impairments may be required in the future.

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Business Environment

The Midstream segment includes our Transportation and NGL businesses. Our Transportation business contains fee-based operations that are not directly exposed to commodity price risk. Our NGL business contains both fee-based operations and operations that are directly impacted by NGL prices. The Midstream segment also includes our 50% equity investment in DCP Midstream, LLC (DCP Midstream). During the first quarter of 2021, NGL prices increased, compared with the first quarter of 2020, due to higher demand and supply disruptions caused by the winter storms that occurred in the Central and Gulf Coast regions in February 2021.

The Chemicals segment consists of our 50% equity investment in Chevron Phillips Chemical Company LLC (CPChem). The chemicals and plastics industry is mainly a commodity-based industry where the margins for key products are based on supply and demand, as well as cost factors. During the first quarter of 2021, the benchmark high-density polyethylene chain margin increased significantly, compared with the first quarter of 2020. This increase was driven by strong demand, low inventories, and tight supply due to operational impacts from the winter storms that occurred in the Central and Gulf Coast regions in February 2021.

Our Refining segment results are driven by several factors, including refining margins, refinery throughput, feedstock costs, product yields, turnaround activity, and other operating costs. The price of U.S. benchmark crude oil, West Texas Intermediate (WTI) at Cushing, Oklahoma, increased to an average of $57.84 per barrel during the first quarter of 2021, compared with an average of $45.97 per barrel in the first quarter of 2020. Market crack spreads are used as indicators of refining margins and measure the difference between market prices for refined petroleum products and crude oil. During the first quarter of 2021, worldwide market crack spreads were significantly higher than the first quarter of 2020. The increases in crude oil prices and market crack spreads were mainly driven by an increase in demand for refined petroleum products and crude oil in the first quarter of 2021 following the distribution of COVID-19 vaccines. Additionally, product prices increased due to operational impacts from the winter storms that occurred in the Central and Gulf Coast regions in February 2021. However, during the first quarter of 2021, the improved market crack spreads were partially offset by a significant increase in cost of RINs, compared with the first quarter of 2020.

Results for our Marketing and Specialties (M&S) segment depend largely on marketing fuel and lubricant margins, and sales volumes of our refined petroleum and other specialty products. While M&S margins are primarily driven by market factors, largely determined by the relationship between supply and demand, marketing fuel margins, in particular, are influenced by the trend in spot prices for refined petroleum products. Generally speaking, a downward trend of spot prices has a favorable impact on marketing fuel margins, while an upward trend of spot prices has an unfavorable impact on marketing fuel margins. The global disruption caused by the COVID-19 pandemic has resulted in reduced demand for refined petroleum and specialty products since March 2020. With the distribution of COVID-19 vaccines in 2021, the global economy has begun to recover, and demand for refined petroleum and specialty products is improving.

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RESULTS OF OPERATIONS

Unless otherwise indicated, discussion of results for the three months ended March 31, 2021, is based on a comparison with the corresponding period of 2020.

Consolidated Results

A summary of income (loss) before income taxes by business segment with a reconciliation to net loss attributable to Phillips 66 follows:

	Millions of Dollars
	Three Months Ended March 31
	2021		2020
Midstream	$	76	(702)
Chemicals	154		169
Refining	(1,040)		(2,261)
Marketing and Specialties	290		513
Corporate and Other	(251)		(197)
Loss before income taxes	(771)		(2,478)
Income tax benefit	(132)		(51)
Net loss	(639)		(2,427)
Less: net income attributable to noncontrolling interests	15		69
Net loss attributable to Phillips 66	$	(654)	(2,496)

Our net loss attributable to Phillips 66 in the first quarter of 2021 was $654 million, compared with $2,496 million in the first quarter of 2020. The lower net loss attributable to Phillips 66 reflects a before-tax impairment in the first quarter of 2021 of $198 million, compared with before-tax impairments of $3,006 million in the first quarter of 2020. Excluding these impairments, our results for the first quarter of 2021 decreased, primarily driven by lower realized refining margins, decreased realized marketing fuel margins and lower sales volumes in the first quarter of 2021.

See the “Segment Results” section for additional information on our segment results.

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Statement of Operations Analysis

Sales and other operating revenues and purchased crude oil and products increased 4% and 9%, respectively, in the first quarter of 2021. These increases were mainly due to higher prices for refined petroleum products, crude oil and NGL, partially offset by lower volumes.

Equity in earnings of affiliates decreased 22% in the first quarter of 2021. The decrease was primarily due to lower realized refining margins and decreased refinery production at WRB Refining LP (WRB), as well as lower earnings from CPChem caused by the adverse impacts from the winter storms that occurred in the Central and Gulf Coast regions in February 2021. See Chemicals segment analysis in the “Segment Results” section for additional information on CPChem.

Selling, general and administrative expenses increased 28% in the first quarter of 2021. The increase was primarily due to higher employee-related expenses and increased selling expenses reflecting a benefit received from a legal settlement in the first quarter of 2020.

Impairments decreased $2,808 million in the first quarter of 2021. During the first quarter of 2021, a before-tax impairment of $198 million was recorded relating to Phillips 66 Partners LP’s investment in the Liberty Pipeline project. In the first quarter of 2020, before-tax impairments of $3,006 million were recorded for our investment in DCP Midstream and goodwill in our Refining segment. See Note 7—Impairments, and Note 13—Fair Value Measurements, in the Notes to Consolidated Financial Statements, for additional information regarding these impairments.

Interest and debt expense increased 32% in the first quarter of 2021. The increase was primarily driven by higher average debt principal balances, reflecting new debt issuances during 2020, and lower capitalized interest due to the completion of capital projects and the placement of assets into service.

Our income tax benefit was $132 million in the first quarter of 2021, compared with $51 million in the corresponding period of 2020. See Note 18—Income Taxes, in the Notes to Consolidated Financial Statements, for information regarding our effective income tax rates.

Net income attributable to noncontrolling interests decreased 78% in the first quarter of 2021. The decrease was primarily driven by a net loss from Phillips 66 Partners LP (Phillips 66 Partners) due to the before-tax impairment associated with Phillips 66 Partners’ investment in the Liberty Pipeline project described above.

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Segment Results

Midstream

	Three Months Ended March 31
	2021		2020
	Millions of Dollars
Income (Loss) Before Income Taxes
Transportation	$	7	200
NGL and Other	35		179
DCP Midstream	34		(1,081)
Total Midstream	$	76	(702)

	Thousands of Barrels Daily
Transportation Volumes
Pipelines*	2,801	3,178
Terminals	2,675	3,148
Operating Statistics
NGL fractionated**	363	198
NGL production***	356	396

* Pipelines represent the sum of volumes transported through each separately tariffed consolidated pipeline segment.

** Excludes DCP Midstream.

*** Includes 100% of DCP Midstream’s volumes.

	Dollars Per Gallon
Weighted-Average NGL Price*
DCP Midstream	$	0.69	0.39
* Based on index prices from the Mont Belvieu market hub, which are weighted by NGL component mix.

The Midstream segment provides crude oil and refined petroleum product transportation, terminaling and processing services, as well as natural gas and NGL transportation, storage, fractionation, processing and marketing services, mainly in the United States. This segment includes our master limited partnership (MLP), Phillips 66 Partners, as well as our 50% equity investment in DCP Midstream, which includes the operations of DCP Midstream, LP (DCP Partners), its MLP.

Results from our Midstream segment increased $778 million in the first quarter of 2021.

Results from our Transportation business decreased $193 million in the first quarter of 2021. The decrease was primarily attributable to a before-tax impairment of $198 million associated with Phillips 66 Partners’ decision to exit the Liberty Pipeline project.

Results from our NGL and Other business decreased $144 million in the first quarter of 2021. The decrease was primarily due to higher operating expenses driven by the winter storms that occurred in the Gulf Coast region in February 2021, lower results from our trading activities, reduced cargo margins at the Sweeny Hub, and decreased equity earnings. These decreases were partially offset by increased fractionation volumes from the startup of Fracs 2 and 3 at the Sweeny Hub in late 2020, leading to higher exported cargoes.

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Results from our investment in DCP Midstream increased $1,115 million in the first quarter of 2021. The increased results reflect a $1,161 million before-tax impairment of our investment in DCP Midstream recorded in the first quarter of 2020. Excluding this impairment, results from our investment in DCP Midstream decreased in the first quarter of 2021, mainly due to unfavorable impacts from DCP Midstream’s commodity price risk management activities.

See Note 7—Impairments, and Note 13—Fair Value Measurements, in the Notes to Consolidated Financial Statements, for additional information regarding the Liberty Pipeline project and DCP Midstream investment impairments.

See the “Executive Overview and Business Environment” section for information on market factors impacting this quarter’s results.

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Chemicals

	Three Months Ended March 31
	2021		2020
	Millions of Dollars
Income Before Income Taxes	$	154	169

	Millions of Pounds
CPChem Externally Marketed Sales Volumes*
Olefins and Polyolefins	4,570	5,113
Specialties, Aromatics and Styrenics	981	1,188
	5,551	6,301
* Represents 100% of CPChem’s outside sales of produced petrochemical products, as well as commission sales from equity affiliates.

Olefins and Polyolefins Capacity Utilization (percent) 79  % 98 

The Chemicals segment consists of our 50% interest in CPChem, which we account for under the equity method. CPChem uses NGL and other feedstocks to produce petrochemicals. These products are then marketed and sold or used as feedstocks to produce plastics and other chemicals. We structure our reporting of CPChem’s operations around two primary business lines: Olefins and Polyolefins (O&P) and Specialties, Aromatics and Styrenics (SA&S).

Results from the Chemicals segment decreased $15 million in the first quarter of 2021. The decrease was primarily due to higher utility, maintenance and repair costs, as well as lower sales volumes, resulting from the winter storms that occurred in the Central and Gulf Coast regions in February 2021. These negative effects were partially offset by higher margins and increased earnings from CPChem’s equity affiliates.

See the “Executive Overview and Business Environment” section for information on market factors impacting this quarter’s results.

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Refining

	Three Months Ended March 31
	2021		2020
	Millions of Dollars
Loss Before Income Taxes
Atlantic Basin/Europe	$	(153)	(637)
Gulf Coast	(253)		(843)
Central Corridor	(248)		(227)
West Coast	(386)		(554)
Worldwide	$	(1,040)	(2,261)

	Dollars Per Barrel
Loss Before Income Taxes
Atlantic Basin/Europe	$	(3.57)	(15.41)
Gulf Coast	(4.64)		(13.16)
Central Corridor	(12.55)		(9.72)
West Coast	(14.89)		(19.87)
Worldwide	(7.27)		(14.44)
Realized Refining Margins*
Atlantic Basin/Europe	$	4.86	2.38
Gulf Coast	3.39		6.76
Central Corridor	5.97		13.50
West Coast	3.33		4.80
Worldwide	4.36		7.11

* See the “Non-GAAP Reconciliations” section for a reconciliation of this non-GAAP measure to the most directly comparable measure under generally accepted accounting principles in the United States (GAAP), income (loss) before income taxes per barrel.

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	Thousands of Barrels Daily
	Three Months Ended March 31
Operating Statistics	2021		2020
Refining operations*
Atlantic Basin/Europe
Crude oil capacity	537		537
Crude oil processed	438		437
Capacity utilization (percent)	82	%	81
Refinery production	482		456
Gulf Coast
Crude oil capacity	784		769
Crude oil processed	553		645
Capacity utilization (percent)	71	%	84
Refinery production	603		703
Central Corridor
Crude oil capacity	531		530
Crude oil processed	384		471
Capacity utilization (percent)	72	%	89
Refinery production	398		488
West Coast
Crude oil capacity	364		364
Crude oil processed	268		279
Capacity utilization (percent)	74	%	77
Refinery production	288		306
Worldwide
Crude oil capacity	2,216		2,200
Crude oil processed	1,643		1,832
Capacity utilization (percent)	74	%	83
Refinery production	1,771		1,953
* Includes our share of equity affiliates.

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The Refining segment refines crude oil and other feedstocks into petroleum products, such as gasoline, distillates and aviation fuels, at 13 refineries in the United States and Europe.

Results from our Refining segment improved by $1,221 million in the first quarter of 2021. The improved results reflect a $1,845 million before-tax goodwill impairment recorded in the first quarter of 2020. Excluding this impairment, results from our Refining segment decreased in the first quarter of 2021, mainly due to lower realized refining margins and decreased refinery production. Decreased refinery production was primarily driven by the reduced demand resulting from the COVID-19 pandemic and unplanned downtime caused by the winter storms that occurred in the Central and Gulf Coast regions in February 2021.

Our worldwide refining crude oil capacity utilization rate was 74% in the first quarter of 2021, compared with 83% in the first quarter of 2020. The decrease in the current quarter was primarily due to refinery run cuts resulting from the COVID-19 pandemic and unplanned downtime due to the winter storms.

See the “Executive Overview and Business Environment” section for information on market factors impacting this quarter’s results.

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Marketing and Specialties

	Three Months Ended March 31
	2021		2020
	Millions of Dollars
Income Before Income Taxes
Marketing and Other	$	211	471
Specialties	79		42
Total Marketing and Specialties	$	290	513

	Dollars Per Barrel
Income Before Income Taxes
U.S.	$	1.36	1.79
International	2.24		6.58
Realized Marketing Fuel Margins*
U.S.	$	1.94	2.08
International	4.01		8.53

* See the “Non-GAAP Reconciliations” section for a reconciliation of this non-GAAP measure to the most directly comparable GAAP measure, income before income taxes per barrel.

	Dollars Per Gallon
U.S. Average Wholesale Prices*
Gasoline	$	2.01	1.77
Distillates	1.98		1.76
* On third-party branded petroleum product sales, excluding excise taxes.

	Thousands of Barrels Daily
Marketing Petroleum Products Sales Volumes
Gasoline	1,023	1,066
Distillates	818	1,037
Other	18	20
Total	1,859	2,123

The M&S segment purchases for resale and markets refined petroleum products, such as gasoline, distillates and aviation fuels, mainly in the United States and Europe. In addition, this segment includes the manufacturing and marketing of specialty products, such as base oils and lubricants.

Before-tax income from the M&S segment decreased $223 million in the first quarter of 2021. The decrease was primarily due to lower realized marketing fuel margins driven by an increase in spot prices in the first quarter of 2021, compared with a significant decline in spot prices in the first quarter of 2020, as well as reduced demand caused by the COVID-19 pandemic.

See the “Executive Overview and Business Environment” section for information on marketing fuel margins and other market factors impacting this quarter’s results.

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Corporate and Other

	Millions of Dollars
	Three Months Ended March 31
	2021		2020
Loss Before Income Taxes
Net interest expense	$	(143)	(103)
Corporate overhead and other	(108)		(94)
Total Corporate and Other	$	(251)	(197)

Net interest expense consists of interest and financing expense, net of interest income and capitalized interest. Corporate overhead and other includes general and administrative expenses, technology costs, environmental costs associated with sites no longer in operation, foreign currency transaction gains and losses, and other costs not directly associated with an operating segment.

Net interest expense increased $40 million in the first quarter of 2021, primarily driven by higher average debt principal balances, reflecting new debt issuances during 2020, and lower capitalized interest due to the completion of capital projects and the placement of assets into service.

Corporate overhead and other increased $14 million in the first quarter of 2021, reflecting higher employee-related expenses.

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CAPITAL RESOURCES AND LIQUIDITY

Financial Indicators

	Millions of Dollars, Except as Indicated
	March 31 2021		December 31 2020
Cash and cash equivalents	$	1,351	2,514
Short-term debt	516		987
Total debt	15,422		15,893
Total equity	20,457		21,523
Percent of total debt to capital*	43%		42
Percent of floating-rate debt to total debt	10%		12
* Capital includes total debt and total equity.

To meet our short- and long-term liquidity requirements, we use a variety of funding sources but rely primarily on cash generated from operating activities and debt financing. During the first three months of 2021, we generated $271 million of cash from operations. We used available cash primarily for capital expenditures and investments of $331 million, repayment of $500 million of maturing debt, dividend payments on our common stock of $394 million, and an additional member loan to an equity affiliate of $155 million. During the first three months of 2021, cash and cash equivalents decreased $1,163 million to $1,351 million.

Significant Sources of Capital

Operating Activities

During the first three months of 2021, cash generated by operating activities was $271 million, compared with $217 million for the first three months of 2020. The increase was primarily due to higher distributions from equity affiliates and favorable working capital impacts, partially offset by lower realized refining margins and sales volumes.

Our short- and long-term operating cash flows are highly dependent upon refining and marketing margins, NGL prices and chemicals margins. Prices and margins in our industry are typically volatile, and are driven by market conditions over which we have little or no control. Absent other mitigating factors, as these prices and margins fluctuate, we would expect a corresponding change in our operating cash flows.

The level and quality of output from our refineries also impact our cash flows. Factors such as operating efficiency, maintenance turnarounds, market conditions, feedstock availability, and weather conditions can affect output. We actively manage the operations of our refineries, and any variability in their operations typically has not been as significant to cash flows as that caused by margins and prices.

Equity Affiliate Operating Distributions

Our operating cash flows are also impacted by distribution decisions made by our equity affiliates. During the first three months of 2021, cash from operations included distributions of $502 million from our equity affiliates, compared with $361 million during the same period of 2020. We cannot control the amount of future dividends from equity affiliates; therefore, future dividend payments by these equity affiliates are not assured.

Tax Refunds

An income tax receivable of $1.5 billion, which reflects tax refunds we expect to receive within the next 12 months, is included in the “Accounts and notes receivable” line item on our consolidated balance sheet as of March 31, 2021.

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Phillips 66 Partners’ Unit Issuances

Phillips 66 Partners suspended issuances under its current continuous offering of common units, or at-the-market (ATM) program in the first quarter of 2020 due to low common unit prices. During the first three months of 2021, Phillips 66 Partners did not issue any common units under the ATM program.

Revolving Credit Facilities and Commercial Paper

At March 31, 2021, borrowings of $450 million were outstanding and $1 million in letters of credit had been drawn under Phillips 66 Partners’ $750 million revolving credit facility. At March 31, 2021, no amount had been drawn under Phillips 66’s $5 billion revolving credit facility or uncommitted $5 billion commercial paper program.

Term Loan Agreement

On April 6, 2021, Phillips 66 Partners entered into a $450 million term loan agreement and borrowed the full amount. The term loan agreement has a maturity date of April 5, 2022, and the outstanding borrowings can be repaid at any time and from time to time, in whole or in part, without premium or penalty. Borrowings bear interest at a floating rate based on either a Eurodollar rate or a reference rate, plus a margin of 0.875%. Proceeds were primarily used to repay amounts borrowed under Phillips 66 Partners’ $750 million revolving credit facility.

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Off-Balance Sheet Arrangements

Lease Residual Value Guarantees

Under the operating lease agreement for our headquarters facility in Houston, Texas, we have the option, at the end of the lease term in September 2025, to request to renew the lease, purchase the facility or assist the lessor in marketing it for resale. We have a residual value guarantee associated with the operating lease agreement with a maximum potential future exposure of $514 million at March 31, 2021. We also have residual value guarantees associated with railcar and airplane leases with maximum potential future payments totaling $371 million. These operating leases have remaining terms of up to nine years.

Dakota Access, LLC (Dakota Access) and Energy Transfer Crude Oil Company, LLC (ETCO)

In March 2019, a wholly owned subsidiary of Dakota Access issued $2.5 billion aggregate principal amount of senior unsecured notes. Dakota Access and ETCO have guaranteed repayment of the notes. In addition, Phillips 66 Partners and its co-venturers in Dakota Access provided a Contingent Equity Contribution Undertaking (CECU) in conjunction with the notes offering. Under the CECU, the co-venturers may be severally required to make proportionate equity contributions to Dakota Access if there is an unfavorable final judgment in the ongoing litigation related to an easement granted by the U.S. Army Corps of Engineers (USACE) to allow the pipeline to be constructed under Lake Oahe in North Dakota. Contributions may be required if Dakota Access determines that the issues included in any such final judgment cannot be remediated and Dakota Access has or is projected to have insufficient funds to satisfy repayment of the notes. If Dakota Access undertakes remediation to cure issues raised in a final judgment, contributions may be required if any series of the notes become due, whether by acceleration or at maturity, during such time, to the extent Dakota Access has or is projected to have insufficient funds to pay such amounts. At March 31, 2021, Phillips 66 Partners’ share of the maximum potential equity contributions under the CECU was approximately $631 million.

In July 2020, the trial court presiding over the litigation vacated Dakota Access’ easement under Lake Oahe and ordered the Dakota Access Pipeline to be shut down and emptied of crude oil pending the preparation of an Environmental Impact Statement (EIS) by the USACE, which had been ordered by the court in March 2020 and is now expected to be completed by March 2022. In August 2020, pending an appeal of the trial court’s decisions, an appellate court denied Dakota Access’ motion to stay the order vacating the easement, but granted its motion to stay the order that the pipeline be shut down while the EIS is prepared. In January 2021, the appellate court affirmed the trial court’s order vacating the easement and directing the USACE to prepare an EIS and reversed the order directing the pipeline to be shut down. Notwithstanding that the easement has been vacated, in April 2021, the USACE indicated that it currently intends to allow the pipeline to continue to operate while it proceeds with the EIS. Currently, there is a motion for a permanent injunction to shut down the pipeline before the trial court that could be decided at any time. Additionally, Dakota Access has requested the appellate court to stay its January 2021 decision pending a filing and disposition of a petition for writ of certiorari to the U.S. Supreme Court.

If the pipeline is required to cease operations, either permanently or pending the preparation of the EIS, and should Dakota Access and ETCO not have sufficient funds to pay ongoing expenses, Phillips 66 Partners also could be required to support its share of the ongoing expenses, including scheduled interest payments on the notes of approximately $25 million annually, in addition to the potential obligations under the CECU.

See Note 10—Guarantees, in the Notes to Consolidated Financial Statements, for additional information on our guarantees.

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Capital Requirements

Capital Expenditures and Investments

For information about our capital expenditures and investments, see the “Capital Spending” section below.

Debt Financing

Our total debt balance at March 31, 2021, and December 31, 2020, was $15.4 billion and $15.9 billion, respectively. Our total debt-to-capital ratio was 43% and 42% at March 31, 2021, and December 31, 2020, respectively.

Joint Venture Loans

We and our co-venturer provided member loans to WRB. At March 31, 2021, our 50% share of the outstanding member loan balance, including accrued interest, was $434 million. The need for additional loans to WRB in the remainder of 2021, as well as WRB’s repayment schedule, will depend on market conditions.

Dividends

On February 10, 2021, our Board of Directors declared a quarterly cash dividend of $0.90 per common share. The dividend was paid on March 1, 2021, to holders of record at the close of business on February 22, 2021.

Share Repurchases

Since July 2012, our Board of Directors has authorized an aggregate of $15 billion of repurchases of our outstanding common stock. The authorizations do not have expiration dates. The share repurchases are expected to be funded primarily through available cash. We are not obligated to repurchase any shares of common stock pursuant to these authorizations and may commence, suspend or terminate repurchases at any time. Since the inception of our share repurchase program in 2012, we have repurchased 159 million shares at an aggregate cost of $12.5 billion. Shares of stock repurchased are held as treasury shares. We suspended share repurchases in mid-March 2020 to preserve liquidity in response to the global economic disruption caused by the COVID-19 pandemic.

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Capital Spending

Our capital expenditures and investments represent consolidated capital spending. Our adjusted capital spending is a non-GAAP financial measure that demonstrates our net share of capital spending, and reflects an adjustment for the portion of our consolidated capital spending funded by a joint venture partner.

	Millions of Dollars
	Three Months Ended March 31
	2021		2020
Capital Expenditures and Investments
Midstream	$	100	603
Chemicals	—		—
Refining	184		245
Marketing and Specialties	22		25
Corporate and Other	25		50
Total Capital Expenditures and Investments	331		923
Less: capital spending funded by a joint venture partner*	—		23
Adjusted Capital Spending	$	331	900
Selected Equity Affiliates**
DCP Midstream	$	7	46
CPChem	79		126
WRB	59		37
	$	145	209

* Included in the Midstream segment.

** Our share of joint venture’s capital spending.

Midstream

During the first three months of 2021, capital spending in our Midstream segment included:

•Construction activities on Phillips 66 Partners’ new ethane pipeline from Clemens Caverns to petrochemical facilities in Gregory, Texas (C2G Pipeline).

•Construction activities on a new 35-mile, 12-inch hydrogen gas pipeline connecting Alliance Refinery to hydrogen gas sources.

•Contributions by Phillips 66 Partners to complete the South Texas Gateway Terminal development activities.

•Continued development of additional Gulf Coast fractionation capacity at the Sweeny Hub.

•Spending associated with other return, reliability, and maintenance projects in our Transportation and NGL businesses.

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Chemicals

During the first three months of 2021, on a 100% basis, CPChem’s capital expenditures and investments were $157 million. The capital spending was primarily for sustaining, optimization and debottlenecking projects on existing assets. CPChem’s capital program was self-funded, and we expect CPChem to continue self-funding its capital program for the remainder of 2021.

Refining

Capital spending for the Refining segment during the first three months of 2021 was primarily for refinery upgrade projects to enhance the yield of high-value products, renewable diesel projects, improvements to the operating integrity of key processing units, and safety-related projects.

Major construction activities included:

•Installation of facilities to improve product value at the Ponca City refinery.

•Installation of facilities to provide flexibility to produce renewable diesel at the San Francisco refinery.

Marketing and Specialties

Capital spending for the M&S segment during the first three months of 2021 was primarily for an investment in a retail marketing joint venture in the Central region and the development and enhancement of retail sites in Europe.

Corporate and Other

Capital spending for Corporate and Other during the first three months of 2021 was primarily for information technology and facilities.

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Contingencies

A number of lawsuits involving a variety of claims that arose in the ordinary course of business have been filed against us or are subject to indemnifications provided by us. We also may be required to remove or mitigate the effects on the environment of the placement, storage, disposal, or release of certain chemical, mineral and petroleum substances at various active and inactive sites. We regularly assess the need for financial recognition or disclosure of these contingencies. In the case of all known contingencies (other than those related to income taxes), we accrue a liability when the loss is probable and the amount is reasonably estimable. If a range of amounts can be reasonably estimated and no amount within the range is a better estimate than any other amount, then the minimum of the range is accrued. We do not reduce these liabilities for potential insurance or third-party recoveries. If applicable, we accrue receivables for probable insurance or other third-party recoveries. In the case of income tax-related contingencies, we use a cumulative probability-weighted loss accrual in cases where sustaining a tax position is uncertain.

Based on currently available information, we believe it is remote that future costs related to known contingent liability exposures will exceed current accruals by an amount that would have a material adverse impact on our consolidated financial statements. As we learn new facts concerning contingencies, we reassess our position both with respect to accrued liabilities and other potential exposures. Estimates particularly sensitive to future changes include contingent liabilities recorded for environmental remediation, tax and legal matters. Estimated future environmental remediation costs are subject to change due to such factors as the uncertain magnitude of cleanup costs, the unknown time and extent of such remedial actions that may be required, and the determination of our liability in proportion to that of other potentially responsible parties. Estimated future costs related to tax and legal matters are subject to change as events evolve and as additional information becomes available during the administrative and litigation processes.

Legal and Tax Matters

Our legal and tax matters are handled by our legal and tax organizations. These organizations apply their knowledge, experience and professional judgment to the specific characteristics of our cases and uncertain tax positions. We employ a litigation management process to manage and monitor the legal proceedings. Our process facilitates the early evaluation and quantification of potential exposures in individual cases and enables the tracking of those cases that have been scheduled for trial and/or mediation. Based on professional judgment and experience in using these litigation management tools and available information about current developments in all our cases, our legal organization regularly assesses the adequacy of current accruals and determines if adjustment of existing accruals, or establishment of new accruals, is required. In the case of income tax-related contingencies, we monitor tax legislation and court decisions, the status of tax audits and the statute of limitations within which a taxing authority can assert a liability.

Environmental

Like other companies in our industry, we are subject to numerous international, federal, state and local environmental laws and regulations. For a discussion of the most significant of these international and federal environmental laws and regulations, see the “Environmental” section in Management’s Discussion and Analysis of Financial Condition and Results of Operations in our 2020 Annual Report on Form 10-K.

We occasionally receive requests for information or notices of potential liability from the EPA and state environmental agencies alleging that we are a potentially responsible party under the Federal Comprehensive Environmental Response, Compensation and Liability Act (CERCLA) or an equivalent state statute. On occasion, we also have been made a party to cost recovery litigation by those agencies or by private parties. These requests, notices and lawsuits assert potential liability for remediation costs at various sites that typically are not owned by us, but allegedly contain wastes attributable to our past operations. At March 31, 2021, and December 31, 2020, we had been notified of potential liability under CERCLA and comparable state laws at 25 sites within the United States.

Notwithstanding any of the foregoing, and as with other companies engaged in similar businesses, environmental costs and liabilities are inherent concerns in certain of our operations and products, and there can be no assurance that those costs and liabilities will not be material. However, we currently do not expect any material adverse effect on our results of operations or financial position as a result of compliance with current environmental laws and regulations.

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Climate Change

There has been a broad range of proposed or promulgated state, national and international laws focusing on greenhouse gas (GHG) emissions reduction, including various regulations proposed or issued by the EPA. These proposed or promulgated laws apply or could apply in states and/or countries where we have interests or may have interests in the future. Laws regulating GHG emissions continue to evolve, and while it is not possible to accurately estimate either a timetable for implementation or our future compliance costs relating to implementation, such laws potentially could have a material impact on our results of operations and financial condition as a result of increasing costs of compliance, lengthening project implementation and agency reviews, or reducing demand for certain hydrocarbon products. We continue to monitor legislative and regulatory actions and legal proceedings globally relating to GHG emissions for potential impacts on our operations.

For examples of legislation and regulation or precursors for possible regulation that do or could affect our operations, see the “Climate Change” section in Management’s Discussion and Analysis of Financial Condition and Results of Operations in our 2020 Annual Report on Form 10-K.

We consider and take into account anticipated future GHG emissions in designing and developing major facilities and projects, and implement energy efficiency initiatives to reduce GHG emissions. Data on our GHG emissions, legal requirements regulating such emissions, and the possible physical effects of climate change on our coastal assets are incorporated into our planning, investment, and risk management decision-making. We are working to continuously improve operational and energy efficiency through resource and energy conservation throughout our operations.

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GUARANTOR FINANCIAL INFORMATION

At March 31, 2021, Phillips 66 had $10.8 billion of senior unsecured notes outstanding guaranteed by Phillips 66 Company, a direct, wholly owned operating subsidiary of Phillips 66. Phillips 66 conducts substantially all of its operations through subsidiaries, including Phillips 66 Company, and those subsidiaries generate substantially all of its operating income and cash flow. The guarantees are (1) unsecured obligations of Phillips 66 Company, (2) rank equally with all of Phillips 66 Company’s other unsecured and unsubordinated indebtedness, and (3) are full and unconditional.

Summarized financial information of Phillips 66 and Phillips 66 Company (the Obligor Group) is presented on a combined basis. Intercompany transactions among the members of the Obligor Group have been eliminated. The financial information of non-guarantor subsidiaries has been excluded from the summarized financial information. Significant intercompany transactions and receivable/payable balances between the Obligor Group and non-guarantor subsidiaries are presented separately in the summarized financial information.

The summarized results of operations for the three months ended March 31, 2021, and the summarized financial position at March 31, 2021, and December 31, 2020, for the Obligor Group on a combined basis were:

Summarized Combined Statement of Operations	Millions of Dollars
Sales and other operating revenues	$	16,191
Revenues and other income—non-guarantor subsidiaries	1,125
Purchased crude oil and products—third parties	10,768
Purchased crude oil and products—related parties	2,316
Purchased crude oil and products—non-guarantor subsidiaries	3,323
Loss before income taxes	(895)
Net loss	(741)

	Millions of Dollars
Summarized Combined Balance Sheet	March 31 2021		December 31 2020
Accounts and notes receivable—third parties	$	4,664	4,060
Accounts and notes receivable—related parties	970		804
Due from non-guarantor subsidiaries, current	494		288
Total current assets	10,061		8,965
Investments and long-term receivables	9,269		9,229
Net properties, plants and equipment	12,852		12,815
Goodwill	1,047		1,047
Due from non-guarantor subsidiaries, noncurrent	6,070		6,173
Other assets associated with non-guarantor subsidiaries	2,815		2,870
Total noncurrent assets	33,928		34,034
Total assets	43,989		42,999
Due to non-guarantor subsidiaries, current	$	2,724	2,203
Total current liabilities	9,467		7,938
Long-term debt	11,330		11,330
Due to non-guarantor subsidiaries, noncurrent	9,937		9,316
Total noncurrent liabilities	26,600		26,044
Total liabilities	36,067		33,982
Total equity	7,922		9,017
Total liabilities and equity	43,989		42,999

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NON-GAAP RECONCILIATIONS

Refining

Our realized refining margins measure the difference between (a) sales and other operating revenues derived from the sale of petroleum products manufactured at our refineries and (b) costs of feedstocks, primarily crude oil, used to produce the petroleum products. The realized refining margins are adjusted to include our proportional share of our joint venture refineries’ realized margins, as well as to exclude those items that are not representative of the underlying operating performance of a period, which we call “special items.” The realized refining margins are converted to a per-barrel basis by dividing them by total refinery processed inputs (primarily crude oil) measured on a barrel basis, including our share of inputs processed by our joint venture refineries. Our realized refining margin per barrel is intended to be comparable with industry refining margins, which are known as “crack spreads.” As discussed in “Executive Overview and Business Environment—Business Environment,” industry crack spreads measure the difference between market prices for refined petroleum products and crude oil. We believe realized refining margin per barrel calculated on a similar basis as industry crack spreads provides a useful measure of how well we performed relative to benchmark industry refining margins.

The GAAP performance measure most directly comparable to realized refining margin per barrel is the Refining segment’s “income (loss) before income taxes per barrel.” Realized refining margin per barrel excludes items that are typically included in a manufacturer’s gross margin, such as depreciation and operating expenses, and other items used to determine income (loss) before income taxes, such as general and administrative expenses. It also includes our proportional share of joint venture refineries’ realized refining margins and excludes special items. Because realized refining margin per barrel is calculated in this manner, and because realized refining margin per barrel may be defined differently by other companies in our industry, it has limitations as an analytical tool. Following are reconciliations of loss before income taxes to realized refining margins:

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	Millions of Dollars, Except as Indicated
Realized Refining Margins	Atlantic Basin/ Europe		Gulf Coast	Central Corridor	West Coast	Worldwide
Three Months Ended March 31, 2021
Loss before income taxes	$	(153)	(253)	(248)	(386)	(1,040)
Plus:
Taxes other than income taxes	20		27	15	23	85
Depreciation, amortization and impairments	52		77	34	54	217
Selling, general and administrative expenses	14		10	7	11	42
Operating expenses	230		321	205	382	1,138
Equity in losses of affiliates	2		3	117	—	122
Other segment (income) expense, net	—		—	(2)	2	—
Proportional share of refining gross margins contributed by equity affiliates	43		—	86	—	129
Realized refining margins	$	208	185	214	86	693
Total processed inputs (thousands of barrels)	42,826		54,560	19,754	25,917	143,057
Adjusted total processed inputs (thousands of barrels)*	42,826		54,560	35,711	25,917	159,014
Loss before income taxes per barrel (dollars per barrel)**	$	(3.57)	(4.64)	(12.55)	(14.89)	(7.27)
Realized refining margins (dollars per barrel)***	4.86		3.39	5.97	3.33	4.36
Three Months Ended March 31, 2020
Loss before income taxes	$	(637)	(843)	(227)	(554)	(2,261)
Plus:
Taxes other than income taxes	19		37	17	31	104
Depreciation, amortization and impairments	492		741	469	364	2,066
Selling, general and administrative expenses	13		7	6	10	36
Operating expenses	194		492	136	283	1,105
Equity in (earnings) losses of affiliates	2		(1)	51	—	52
Other segment (income) expense, net	(2)		1	(3)	1	(3)
Proportional share of refining gross margins contributed by equity affiliates	16		—	113	—	129
Special items:
Lower-of-cost-or-market inventory adjustments	—		—	35	—	35
Realized refining margins	$	97	434	597	135	1,263
Total processed inputs (thousands of barrels)	41,335		64,066	23,345	27,877	156,623
Adjusted total processed inputs (thousands of barrels)*	41,335		64,066	44,291	27,877	177,569
Loss before income taxes per barrel (dollars per barrel)**	$	(15.41)	(13.16)	(9.72)	(19.87)	(14.44)
Realized refining margins (dollars per barrel)***	2.38		6.76	13.50	4.80	7.11
* Adjusted total processed inputs include our proportional share of processed inputs of an equity affiliate.
** Loss before income taxes divided by total processed inputs.
*** Realized refining margins per barrel, as presented, are calculated using the underlying realized refining margin amounts, in dollars, divided by adjusted total processed inputs, in barrels. As such, recalculated per barrel amounts using the rounded margins and barrels presented may differ from the presented per barrel amounts.

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Marketing

Our realized marketing fuel margins measure the difference between (a) sales and other operating revenues derived from the sale of fuels in our M&S segment and (b) costs of those fuels. The realized marketing fuel margins are adjusted to exclude those items that are not representative of the underlying operating performance of a period, which we call “special items.” The realized marketing fuel margins are converted to a per-barrel basis by dividing them by sales volumes measured on a barrel basis. We believe realized marketing fuel margin per barrel demonstrates the value uplift our marketing operations provide by optimizing the placement and ultimate sale of our refineries’ fuel production.

Within the M&S segment, the GAAP performance measure most directly comparable to realized marketing fuel margin per barrel is the marketing business’ “income before income taxes per barrel.” Realized marketing fuel margin per barrel excludes items that are typically included in gross margin, such as depreciation and operating expenses, and other items used to determine income before income taxes, such as general and administrative expenses. Because realized marketing fuel margin per barrel excludes these items, and because realized marketing fuel margin per barrel may be defined differently by other companies in our industry, it has limitations as an analytical tool. Following are reconciliations of income before income taxes to realized marketing fuel margins:

	Millions of Dollars, Except as Indicated
	Three Months Ended March 31, 2021			Three Months Ended March 31, 2020
	U.S.		International	U.S.	International
Realized Marketing Fuel Margins
Income before income taxes	$	199	48	299	171
Plus:
Taxes other than income taxes	4		2	2	1
Depreciation and amortization	3		19	3	17
Selling, general and administrative expenses	165		60	127	63
Equity in earnings of affiliates	(2)		(24)	—	(22)
Other operating revenues*	(86)		(5)	(84)	2
Other segment income, net	—		(1)	—	—
Marketing margins	283		99	347	232
Less: margin for nonfuel related sales	—		13	—	10
Realized marketing fuel margins	$	283	86	347	222
Total fuel sales volumes (thousands of barrels)	145,794		21,474	167,178	25,979
Income before income taxes per barrel (dollars per barrel)	$	1.36	2.24	1.79	6.58
Realized marketing fuel margins (dollars per barrel)**	1.94		4.01	2.08	8.53
* Includes other nonfuel revenues.
** Realized marketing fuel margins per barrel, as presented, are calculated using the underlying realized marketing fuel margin amounts, in dollars, divided by sales volumes, in barrels. As such, recalculated per barrel amounts using the rounded margins and barrels presented may differ from the presented per barrel amounts.

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CAUTIONARY STATEMENT FOR THE PURPOSES OF THE “SAFE HARBOR” PROVISIONS OF THE PRIVATE SECURITIES LITIGATION REFORM ACT OF 1995

This report includes forward-looking statements within the meaning of Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934. You can normally identify our forward-looking statements by the words “anticipate,” “estimate,” “believe,” “budget,” “continue,” “could,” “intend,” “may,” “plan,” “potential,” “predict,” “seek,” “should,” “will,” “would,” “expect,” “objective,” “projection,” “forecast,” “goal,” “guidance,” “outlook,” “effort,” “target” and similar expressions, but the absence of such words does not mean a statement is not forward-looking.

We based the forward-looking statements on our current expectations, estimates and projections about us, our operations, our joint ventures and entities in which we have equity interests, as well as the industries in which we and they operate in general. We caution you these statements are not guarantees of future performance as they involve assumptions that, while made in good faith, may prove to be incorrect, and involve risks and uncertainties we cannot predict. In addition, we based many of these forward-looking statements on assumptions about future events that may prove to be inaccurate. Accordingly, our actual outcomes and results may differ materially from what we have expressed or forecast in the forward-looking statements. Any differences could result from a variety of factors, including the following:

•The continuing effects of the COVID-19 pandemic and its negative impact on commercial activity and demand for refined petroleum products, as well as the extent and duration of recovery of economies and demand for our products after the pandemic subsides.

•Fluctuations in NGL, crude oil, refined petroleum product and natural gas prices and refining, marketing and petrochemical margins.

•Changes in governmental policies relating to NGL, crude oil, natural gas or refined petroleum products pricing, regulation or taxation, including exports.

•Actions taken by OPEC and other countries impacting supply and demand and correspondingly, commodity prices.

•Unexpected changes in costs or technical requirements for constructing, modifying or operating our facilities or transporting our products.

•Unexpected technological or commercial difficulties in manufacturing, refining or transporting our products, including chemical products.

•Lack of, or disruptions in, adequate and reliable transportation for our NGL, crude oil, natural gas and refined petroleum products.

•The level and success of drilling and quality of production volumes around our Midstream assets.

•The inability to timely obtain or maintain permits, including those necessary for capital projects.

•The inability to comply with government regulations or make capital expenditures required to maintain compliance.

•Changes to worldwide government policies relating to renewable fuels and greenhouse gas emissions that adversely affect programs like the renewable fuel standards program, low carbon fuel standards and tax credits for biofuels.

•Failure to complete definitive agreements and feasibility studies for, and to complete construction of, announced and future capital projects on time and within budget.

•Potential disruption or interruption of our operations due to accidents, weather events (including as a result of climate change), civil unrest, insurrections, political events, terrorism or cyberattacks.

•General domestic and international economic and political developments including armed hostilities, expropriation of assets, and other political, economic or diplomatic developments, including those caused by public health issues, outbreaks of diseases and pandemics.

•Failure of new products and services to achieve market acceptance.

•International monetary conditions and exchange controls.

51

•Substantial investments required, or reduced demand for products, as a result of existing or future environmental rules and regulations, including reduced consumer demand for refined petroleum products.

•Liability resulting from litigation or for remedial actions, including removal and reclamation obligations under environmental regulations.

•Changes in tax, environmental and other laws and regulations (including alternative energy mandates) applicable to our business.

•Changes in estimates or projections used to assess fair value of intangible assets, goodwill and property and equipment and/or strategic decisions with respect to our asset portfolio that cause impairment charges.

•Limited access to capital or significantly higher cost of capital related to changes to our credit profile or illiquidity or uncertainty in the domestic or international financial markets.

•The operation, financing and distribution decisions of our joint ventures that we do not control.

•The factors generally described in Item 1A.—Risk Factors in our 2020 Annual Report on Form 10-K.

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Item 3.   QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

Our commodity price risk and interest rate risk at March 31, 2021, did not differ materially from the risks disclosed under Item 7A of our 2020 Annual Report on Form 10-K.

Item 4.   CONTROLS AND PROCEDURES

We maintain disclosure controls and procedures designed to ensure that information required to be disclosed in reports we file or submit under the Securities Exchange Act of 1934, as amended (the Act), is recorded, processed, summarized and reported within the time periods specified in U.S. Securities and Exchange Commission (SEC) rules and forms, and that such information is accumulated and communicated to management, including our principal executive and principal financial officers, as appropriate, to allow timely decisions regarding required disclosure. As of March 31, 2021, with the participation of management, our Chairman and Chief Executive Officer and our Executive Vice President, Finance and Chief Financial Officer carried out an evaluation, pursuant to Rule 13a-15(b) of the Act, of the effectiveness of our disclosure controls and procedures (as defined in Rule 13a-15(e) of the Act). Based upon that evaluation, our Chairman and Chief Executive Officer and our Executive Vice President, Finance and Chief Financial Officer concluded that our disclosure controls and procedures were operating effectively as of March 31, 2021.

There have been no changes in our internal control over financial reporting, as defined in Rule 13a-15(f) of the Act, in the quarterly period ended March 31, 2021, that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

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PART II. OTHER INFORMATION

Item 1.   LEGAL PROCEEDINGS

Item 103 of Regulation S-K promulgated by the SEC requires disclosure of certain environmental matters when a governmental authority is a party to the proceedings and such proceedings involve potential monetary sanctions that we reasonably believe will be in excess of $300,000. The following matters are disclosed in accordance with that requirement. We do not currently believe that the eventual outcome of any matters reported, individually or in the aggregate, could have a material adverse effect on our business, financial condition, results of operations or cash flows.

Our U.S. refineries are implementing two separate consent decrees, regarding alleged violations of the Federal Clean Air Act, with the EPA, five states and one local air pollution agency. Some of the requirements and limitations contained in the decrees provide for stipulated penalties for violations. Stipulated penalties under the decrees are not automatic, but must be requested by one of the agency signatories. As part of periodic reports under the decrees or other reports required by permits or regulations, we occasionally report matters that could be subject to a request for stipulated penalties. If a specific request for stipulated penalties meeting the reporting threshold set forth in SEC rules is made pursuant to these decrees based on a given reported exceedance, we will separately report that matter and the amount of the proposed penalty.

New Matters

There were no new matters to report.

Matters Previously Reported

There were no material developments to matters previously reported.

Item 1A.   RISK FACTORS

There were no material changes from the risk factors disclosed in Item 1A of our 2020 Annual Report on Form 10-K.

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

Issuer Purchases of Equity Securities

In March 2020, we announced that we had temporarily suspended our share repurchases. As of March 31, 2021, we had $2,514 million remaining on our existing share repurchase authorization, which has no expiration date. Any future share repurchases will be made at the discretion of management and will depend on various factors including our share price, results of operations, financial condition and cash required for future business plans.

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Item 6. EXHIBITS

Exhibit Number	Exhibit Description
10.1*	Third Amendment to the Third Amended and Restated Limited Liability Company Agreement of Chevron Phillips Chemical Company LLC.
22*	List of Guarantor Subsidiaries.
31.1*	Certification of Chief Executive Officer pursuant to Rule 13a-14(a) under the Securities Exchange Act of 1934.
31.2*	Certification of Chief Financial Officer pursuant to Rule 13a-14(a) under the Securities Exchange Act of 1934.
32*	Certifications pursuant to 18 U.S.C. Section 1350.
101.INS*	Inline XBRL Instance Document - the instance document does not appear in the Interactive Data File because its XBRL tags are embedded within the Inline XBRL document.
101.SCH*	Inline XBRL Schema Document.
101.CAL*	Inline XBRL Calculation Linkbase Document.
101.LAB*	Inline XBRL Labels Linkbase Document.
101.PRE*	Inline XBRL Presentation Linkbase Document.
101.DEF*	Inline XBRL Definition Linkbase Document.
104*	Cover Page Interactive Data File (formatted as Inline XBRL and contained in Exhibit 101).
* Filed herewith.

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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.

PHILLIPS 66

/s/ Chukwuemeka A. Oyolu

Chukwuemeka A. Oyolu

Vice President and Controller

(Chief Accounting and Duly Authorized Officer)

Date: April 30, 2021

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EX-10.1

Exhibit 10.1

THIRD AMENDMENT TO THE THIRD AMENDED AND RESTATED LIMITED LIABILITY COMPANY AGREEMENT OF CHEVRON PHILLIPS CHEMICAL COMPANY LLC

This Third Amendment to the Third Amended and Restated Limited Liability Company Agreement of Chevron Phillips Chemical Company LLC (this “Third Amendment”), effective as of February 25, 2021, is entered into by and among Chevron U.S.A. Inc., a Pennsylvania corporation (the “Class C Member”) and Phillips 66 Company, a Delaware corporation (the “Class P Member”). The Class C Member and the Class P Member are, collectively, the “Members”. Any capitalized terms used but not defined herein shall have the same meanings set forth in the Third Amended and Restated Limited Liability Company Agreement of Chevron Phillips Chemical Company LLC, dated May 1, 2012, as amended from time to time (the “LLC Agreement”).

RECITALS

WHEREAS, the Members make ongoing investments in the development of the Company’s management team, including the chief executive officer and president, to seek to maximize the Company’s success in the marketplace;

WHEREAS, the Members expend significant energy on thoughtful succession plans for Company Officers that take time and resources to develop and execute.  These plans are essential to leadership continuity and organizational stability;

WHEREAS, the Members recognize that the Company’s effective operations and implementation of its competitively sensitive strategies may be compromised through the untimely departure of the Company’s chief executive officer and president or other Officers;

WHEREAS, the Company’s chief executive officer and president reports to the Company’s Board of Directors but, like other Officers, interacts with other representatives of the Members and with key suppliers, customers and other external parties on Company initiatives such that turnover in these Officer roles without adequate planning may be highly disruptive to the Company; and

WHEREAS, confidence in the Company’s Officers may be undermined if Officers perceive incentives to engage in conversations with representatives of one Member while still employed by the Company or a Company Affiliate, about the Officer leaving the Company and being hired directly or indirectly by the Member or its Affiliates.

NOW, THEREFORE, in consideration of these premises and for other good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, the Members agree as follows:

1

I.AMENDMENTS TO THE LLC AGREEMENT

1.1 The definition of “Affiliate” in Article I is amended and restated in its entirety to read as follows:

“Affiliate” has the meaning set forth in Rule 405 under the Securities Act of 1933, as amended. For purposes of Sections 6.8 and 6.9 of this Agreement only, an “Affiliate” of a Member means a Person that directly or indirectly through one or more intermediaries, Controls, is Controlled by, or is under common Control with, the Member where “Control” means the possession, directly or indirectly, of greater than 50% of the voting securities or interests of a Person, or of the power to direct or cause the direction of the management policies of a Person by Contract or otherwise.

1.2 Section 4.2 of the LLC Agreement is amended and restated in its entirety to read as follows:

4.2 NUMBER AND CLASSES OF DIRECTORS. The Board of Directors shall consist of six (6) voting Directors (the “Voting Directors”) and two (2) non-voting Directors or three (3) non-voting Directors if the Company’s president and chief executive officer are not the same person (the “Non-Voting Directors”).

1.3 Section 4.3(d) of the LLC Agreement is amended and restated in its entirety to read as follows:

(d) The Company’s chief executive officer and chief financial officer (as well as the president if the same person does not occupy the role of both the Company’s president and chief executive officer) shall be ex officio Non-Voting Directors. The Non-Voting Directors may be removed at any time by the Board of Directors. If either the office of chief executive officer, the office of chief financial officer (or the office of the president if the same person does not occupy the role of both president and chief executive officer) is vacant, the Non-Voting Director position associated with such office shall also be vacant.

1.4 Section 6.1 of the LLC Agreement is amended and restated in its entirety to read as follows:

6.1     GENERAL. Subject to the provisions of the Act, the Certificate and this Agreement, the Board of Directors shall from time to time appoint one or more individuals who shall be termed officers of the Company (the “Officers”). Subject to the decision and control of the Board of Directors, the Officers of the Company shall manage the day-to-day activities and affairs and will have discretion with regard to all matters not otherwise reserved to the Board of Directors of the Company. Each Officer shall hold his or her respective office at the pleasure of the Board of Directors. Except as otherwise specifically provided for below, an Officer need not be a Member or Director of the Company, and any number of offices may be held by the same person. The Officers of the Company shall include a chief executive officer, a president, a chief financial officer, and a secretary. The Company may also have, at the discretion of the Board of Directors, one or more vice presidents, and such other Officers as may be designated from time to time by the Board of Directors.

1.5 Section 6.3 of the LLC Agreement is amended and restated in its entirety to read as follows:

6.3     CHIEF EXECUTIVE OFFICER. The chief executive officer shall, subject to the oversight and control of the Board of Directors, have general supervision, direction and control of the business and affairs of the Company. Subject to Section 7.1 hereof, the chief executive officer shall have all of the powers which are ordinarily inherent in the office of chief executive officer of a corporation, and shall have such further powers and shall perform such further duties, as may be prescribed by the Board of Directors. All of the Company’s other Officers shall report to the chief executive officer directly or indirectly through another such Officer who reports to the chief executive officer.

2

1.6 The LLC Agreement is amended to add a new Section 6.3.1 which reads as follows:

6.3.1     PRESIDENT. The president may be chief executive officer if so designated by the Board of Directors. If the president and chief executive officer are not the same person, the president shall perform such duties and have such other powers as the Board of Directors from time to time may prescribe. At the request of the chief executive officer or in the chief executive officer’s absence or in the event of the chief executive officer’s inability or refusal to act, the president shall perform the duties of the chief executive officer, and when so acting, shall have all the powers of and be subject to all the restrictions upon the chief executive officer.

1.7 Section 6.4 of the LLC Agreement is amended and restated in its entirety to read as follows:

6.4    VICE PRESIDENTS. In the absence or disability of the chief executive officer and the president, the vice presidents in order of their rank fixed by authority granted by the chief executive officer, shall perform all of the duties of the chief executive officer and when so acting shall have all of the powers of and be subject to all of the restrictions upon the chief executive officer. The vice presidents shall have such other powers and perform such other duties as from time to time may be prescribed for them, respectively, by the chief executive officer or by this Agreement or by the Board of Directors.

3

1.8 The LLC Agreement is amended to add a new Section 6.8 which reads as follows:

6.8     EFFICIENT OFFICER SUCCESSION.

(a)A Member shall not, and shall take all necessary actions to cause its Affiliates to not, directly or indirectly hire as an employee or contractor, whether full-time or part-time, by direct hire or contract (singularly and collectively, “Hire”) the Company’s (i) chief executive officer, or (ii) president (if the same person does not occupy the role of both chief executive officer and president); Executive Vice President, Projects and Environment, Health, Safety & Security; Executive Vice President and Chief Operating Officer; Senior Vice President, Polymers and Specialties; Senior Vice President, Petrochemicals; or Senior Vice President, Corporate Planning and Technology (or if a title to any of these roles is changed or if the associated responsibilities are materially reallocated then this clause (ii) shall be deemed to apply to the individuals occupying successor roles or the roles embracing substantial parts of the reallocated responsibilities) (clauses (i) and (ii), singularly and collectively, “Key Leadership”) unless (x) the individual was employed in their most recent Key Leadership position with the Company or a Company Affiliate for at least five (5) successive years in the case of the chief executive officer and at least three (3) successive years for any other Key Leadership position, and (y) the Member gives the Board of Directors written notice of the intent to Hire at least two hundred and seventy (270) days prior if the intent is to Hire the individual occupying the chief executive officer position, and at least one hundred and eighty (180) days prior if the intent is to Hire an individual occupying any other Key Leadership position, or (z) notwithstanding the failure to satisfy clauses (x) or (y), the Board of Directors furnishes its consent to such a Hire by written resolution.

(b) In addition, a Member shall not, and shall take all necessary actions to cause its Affiliates to not, Hire the chief executive officer of the Company until the passage of at least one (1) year after the last date that individual was employed by the Company or an Affiliate of the Company, unless the Board of Directors furnishes its consent to such a Hire by written resolution.

(c) It is agreed that, in the event of any breach of Section 6.8(a) or Section 6.8(b) by a Member, that Member shall, by the date (“Accrual Date”) that is ten (10) days following written demand by any other Member, pay each other Member, as liquidated damages, a sum in U.S. dollars equal to three (3) times the individual’s total gross (prior to taxes and other deductions) annualized cash compensation (salary and cash bonus, if any) from the Company or an Affiliate of the Company earned for the year in which the breach occurred (or the immediately prior year, whichever amount yields a greater figure). In addition, a Member seeking recovery from another Member under this Section 6.8(c) shall be entitled to reimbursement from that Member for all costs and expenses, including reasonable attorneys’ fees, incurred enforcing this Section 6.8(c). Prejudgment interest at the highest legal rate shall begin accruing as of the Accrual Date on all amounts due under this Section 6.8(c). All amounts due under this Section 6.8(c) shall be paid in full without set-off of any kind whatsoever. The foregoing shall not limit, and shall be in addition to, any other available remedies.

(d) Any secondment of an individual from a Member to the Company or an Affiliate of the Company shall be for a defined secondment period only. The secondment and any termination prior to the approved period or any alteration of the secondment shall be approved in advance by a Board of Directors resolution, or by the Board of Director’s compensation committee or its then equivalent.

4

1.9 The LLC Agreement is amended to add a new Section 6.9 which reads as follows:

6.9     ADDITIONAL OVERSIGHT OF COMPANY OFFICER EMPLOYMENT AGREEMENTS. The Board of Directors shall (in coordination with or through the Board of Director’s compensation committee or its then equivalent) give due consideration to whether any individual who will be newly placed into a Key Leadership position shall have a signed employment agreement with the Company or an Affiliate of the Company precluding the individual from being Hired by (i) a Member or its Affiliate, or (ii) a key competitor (as then defined by the Board of Directors or its compensation committee relative to the particular Key Leadership position); provided, however, that with respect to the position of chief executive officer, the individual shall have an employment agreement and the period applicable to clause (i) shall be one (1) year, consistent in substance with Section 6.8(b).

1.10 Section 7.1(a)(i) of the LLC Agreement is amended to read as set forth below. Except as expressly amended herein, the remainder of Section 7.1(a) shall remain in full force and effect.

(i)The hiring, firing, renewal, compensation, evaluation and planning for succession of the chief executive officer, president, the chief financial officer and senior vice presidents and other Officers of similar rank, including Key Leadership positions.

1.7    Section 16.2 of the LLC Agreement is amended and restated in its entirety to read as follows:

16.2     REPRESENTATION OF SHARES OF COMPANIES OR INTERESTS IN OTHER ENTITIES

. The chief executive officer, president, any vice president or the secretary or any assistant secretary of this Company is authorized to vote, represent and exercise on behalf of this Company all rights incident to any and all shares of any other company or companies, or any interests in any other entity, standing in the name of this Company. The authority herein granted to said officers to vote or represent on behalf of this Company any and all shares held by this Company in any other company or companies, or any interests in any other entity, may be exercised either by such officers in person or by any other person authorized so to do by proxy or power of attorney duly executed by said officers.

II.MISCELLANEOUS

2.1 Full Force and Effect. Except as amended by this Third Amendment, the LLC Agreement continues in full force and effect, and the parties hereto hereby ratify and confirm the LLC Agreement, as amended hereby. All references to the “Agreement,” “herein,” “hereof,” “hereunder” or words of similar import in the LLC Agreement shall be deemed to mean the LLC Agreement as amended by this Third Amendment.

2.2 Third Parties. Nothing in this Third Amendment, express or implied, is intended to confer upon any party, other than the parties hereto, and their respective successors and permitted assigns, any rights, remedies, obligations or liabilities under or by reason of this Third Amendment.

5

2.3 Governing Law; Jurisdiction and Forum; Waiver of Jury Trial.

2.3.1 This Third Amendment shall be governed by and construed under the substantive laws of the State of Delaware, without regard to Delaware choice of law provisions.

2.3.2 Each party hereto irrevocably submits to the jurisdiction of any Delaware state court or any federal court sitting in the State of Delaware in any action arising out of or relating to this Third Amendment, and hereby irrevocably agrees that all claims in respect of such action may be heard and determined in such Delaware state or federal court. Each party hereto hereby irrevocably waives, to the fullest extent it may effectively do so, the defense of an inconvenient forum to the maintenance of such action or proceeding. The parties hereto further agree, to the extent permitted by law, that final and unappealable judgment against any of them in any action or proceeding contemplated above shall be conclusive and may be enforced in any other jurisdiction within or outside the United States by suit on the judgment, a certified copy of which shall be conclusive evidence of the fact and amount of such judgment.

2.3.3 To the extent that any party hereto has or hereafter may acquire any immunity from jurisdiction of any court or from any legal process (whether through service or notice, attachment prior to judgment, attachment in aid of execution, execution or otherwise) with respect to itself or its property, each party hereto hereby irrevocably waives such immunity in respect of its obligations with respect to this Third Amendment.

2.3.4 Each party hereto waives, to the fullest extent permitted by applicable laws, any right it may have to a trial by jury in respect of any action, suit or proceeding arising out of or relating to this Third Amendment. Each party hereto certifies that it has been induced to enter into this Third Amendment by, among other things, the mutual waivers and certifications set forth above in this Section 2.3.4.

2.4 Titles and Subtitles; Forms of Pronouns; Construction and Definitions. The titles of the sections and paragraphs of this Third Amendment are for convenience only and are not to be considered in construing this Third Amendment. All pronouns used in this Third Amendment shall be deemed to include masculine, feminine and neuter forms, the singular number includes the plural and the plural number includes the singular. Unless the context otherwise requires, the term “including” shall mean “including, without limitation”.

2.5 Severability. If one or more provisions of this Third Amendment are held by a proper court to be unenforceable under applicable law, portions of such provisions, or such provisions in their entirety, to the extent necessary and permitted by law, shall be severed herefrom, and the balance of this Third Amendment shall be enforceable in accordance with its terms.

2.6 Further Action. The parties shall execute and deliver all documents, provide all information, and take or refrain from taking such actions as may be necessary or appropriate to give full effect to the provisions of this Third Amendment and the matters contemplated hereby.

2.7 Counterparts. This Third Amendment may be executed in counterparts, including through an electronic signature (such as via DocuSign) and signature pages may be exchanged electronically (e.g., emailed PDFs), each of which shall be deemed an original, but all of which together shall constitute one and the same instrument, and shall become effective and admissible when there exists copies hereof which, when taken together, bear the authorized signatures of each of the parties hereto.

[Signatures Follow]

6

IN WITNESS WHEREOF, the parties hereto have duly executed this Third Amendment as of the date first written above.

CHEVRON U.S.A. INC. By:    /s/ Michael E. Coyle Name:    Michael E. Coyle Its:    President of Manufacturing PHILLIPS 66 COMPANY By:    /s/ Kevin Mitchell Name:    Kevin Mitchell Its:    Executive Vice President, Finance and Chief Financial Officer

7

EX-22

Exhibit 22

LIST OF GUARANTOR SUBSIDIARIES

As of March 31, 2021, Phillips 66 Company, a corporation incorporated under the laws of the State of Delaware (the “Guarantor Subsidiary”), has guaranteed each of the senior unsecured debt securities issued by Phillips 66 listed below. Phillips 66 directly owns 100% of the Guarantor Subsidiary. The guarantees are (1) unsecured obligations of the Guarantor Subsidiary, (2) rank equally with all of its other unsecured and unsubordinated indebtedness, and (3) are full and unconditional and joint and several.

Senior Unsecured Debt Securities of Phillips 66 Guaranteed by the Guarantor Subsidiary

•4.300% Senior Notes due April 2022

•3.700% Senior Notes due April 2023

•0.900% Senior Notes due February 2024

•Floating-rate Senior Notes due February 2024

•3.850% Senior Notes due April 2025

•1.300% Senior Notes due February 2026

•3.900% Senior Notes due March 2028

•2.150% Senior Notes due December 2030

•4.650% Senior Notes due November 2034

•5.875% Senior Notes due May 2042

•4.875% Senior Notes due November 2044

EX-31.1

Exhibit 31.1

CERTIFICATION

I, Greg C. Garland, certify that:

1.I have reviewed this Quarterly Report on Form 10-Q of Phillips 66;

2.Based on my knowledge, this 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 report;

3.Based on my knowledge, the financial statements, and other financial information included in this 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 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 15d-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 report is being prepared;

(b)Designed such internal control over financial reporting, or caused such internal control 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 report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d)Disclosed in this 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 fiscal 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: April 30, 2021

/s/ Greg C. Garland

Greg C. Garland

Chairman of the Board of Directors and
 Chief Executive Officer

EX-31.2

Exhibit 31.2

CERTIFICATION

I, Kevin J. Mitchell, certify that:

1.I have reviewed this Quarterly Report on Form 10-Q of Phillips 66;

2.Based on my knowledge, this 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 report;

3.Based on my knowledge, the financial statements, and other financial information included in this 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 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 15d-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 report is being prepared;

(b)Designed such internal control over financial reporting, or caused such internal control 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 report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d)Disclosed in this 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 fiscal 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: April 30, 2021  

/s/ Kevin J. Mitchell

Kevin J. Mitchell

Executive Vice President, Finance and
Chief Financial Officer

EX-32

Exhibit 32

CERTIFICATIONS PURSUANT TO 18 U.S.C. SECTION 1350

In connection with the Quarterly Report of Phillips 66 (the Company) on Form 10-Q for the period ended March 31, 2021, as filed with the U.S. Securities and Exchange Commission on the date hereof (the Report), each of the undersigned hereby certifies, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that to their knowledge:

(1)The Report fully complies with the requirements of Sections 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.

Date: April 30, 2021

/s/ Greg C. Garland

Greg C. Garland

Chairman of the Board of Directors and
Chief Executive Officer

/s/ Kevin J. Mitchell

Kevin J. Mitchell

Executive Vice President, Finance and
Chief Financial Officer

XML

Cover	3 Months Ended
	Mar. 31, 2021 shares
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Mar. 31, 2021
Document Transition Report	false
Entity File Number	001-35349
Entity Registrant Name	Phillips 66
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	45-3779385
Entity Address, Address Line One	2331 CityWest Blvd
Entity Address, City or Town	Houston
Entity Address, State or Province	TX
Entity Address, Postal Zip Code	77042
City Area Code	281
Local Phone Number	293-6600
Title of 12(b) Security	Common Stock, $0.01 Par Value
Trading Symbol	PSX
Security Exchange Name	NYSE
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity common stock, shares outstanding	437,867,054
Entity Central Index Key	0001534701
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	Q1
Amendment Flag	false

XML

Consolidated Statement of Operations - USD ($) shares in Thousands, $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Revenues and Other Income
Sales and other operating revenues	$ 21,627	$ 20,878
Equity in earnings of affiliates	285	365
Net gain on dispositions	0	1
Other income	15	0
Total Revenues and Other Income	21,927	21,244
Costs and Expenses
Purchased crude oil and products	20,065	18,440
Operating expenses	1,380	1,341
Selling, general and administrative expenses	408	319
Depreciation and amortization	356	342
Impairments	198	3,006
Taxes other than income taxes	139	157
Accretion on discounted liabilities	6	6
Interest and debt expense	146	111
Total Costs and Expenses	22,698	23,722
Loss before income taxes	(771)	(2,478)
Income tax benefit	(132)	(51)
Net Loss	(639)	(2,427)
Less: net income attributable to noncontrolling interests	15	69
Net Loss Attributable to Phillips 66	$ (654)	$ (2,496)
Net Loss Attributable to Phillips 66 Per Share of Common Stock (dollars)
Basic (in usd per share)	$ (1.49)	$ (5.66)
Diluted (in usd per share)	$ (1.49)	$ (5.66)
Weighted-Average Common Shares Outstanding (thousands)
Basic (in shares)	439,504	441,345
Diluted (in shares)	439,504	441,345

XML

Consolidated Statement of Comprehensive Loss - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Statement of Comprehensive Income [Abstract]
Net loss	$ (639)	$ (2,427)
Defined benefit plans
Amortization of net actuarial loss and prior service credit	22	23
Plans sponsored by equity affiliates	6	2
Income taxes on defined benefit plans	(6)	(5)
Defined benefit plans, net of income taxes	22	20
Foreign currency translation adjustments	(15)	(222)
Income taxes on foreign currency translation adjustments	0	1
Foreign currency translation adjustments, net of income taxes	(15)	(221)
Cash flow hedges	2	(9)
Income taxes on hedging activities	0	2
Hedging activities, net of income taxes	2	(7)
Other Comprehensive Income (Loss), Net of Income Taxes	9	(208)
Comprehensive Loss	(630)	(2,635)
Less: comprehensive income attributable to noncontrolling interests	15	69
Comprehensive Loss Attributable to Phillips 66	$ (645)	$ (2,704)

XML

Consolidated Balance Sheet - USD ($) $ in Millions	Mar. 31, 2021	Dec. 31, 2020
Assets
Cash and cash equivalents	$ 1,351	$ 2,514
Accounts and notes receivable (net of allowances of $51 million in 2021 and $37 million in 2020)	7,161	5,688
Accounts and notes receivable—related parties	1,004	834
Inventories	4,273	3,893
Prepaid expenses and other current assets	629	347
Total Current Assets	14,418	13,276
Investments and long-term receivables	13,376	13,624
Net properties, plants and equipment	23,677	23,716
Goodwill	1,425	1,425
Intangibles	836	843
Other assets	1,764	1,837
Total Assets	55,496	54,721
Liabilities
Accounts payable	7,484	5,171
Accounts payable—related parties	762	378
Short-term debt	516	987
Accrued income and other taxes	1,149	1,351
Employee benefit obligations	316	573
Other accruals	1,204	1,058
Total Current Liabilities	11,431	9,518
Long-term debt	14,906	14,906
Asset retirement obligations and accrued environmental costs	682	657
Deferred income taxes	5,547	5,644
Employee benefit obligations	1,351	1,341
Other liabilities and deferred credits	1,122	1,132
Total Liabilities	35,039	33,198
Equity
Common stock (2,500,000,000 shares authorized at $0.01 par value) Issued (2021—649,638,881 shares; 2020—648,643,223 shares) Par value	6	6
Capital in excess of par	20,420	20,383
Treasury stock (at cost: 2021 and 2020—211,771,827 shares)	(17,116)	(17,116)
Retained earnings	15,449	16,500
Accumulated other comprehensive loss	(780)	(789)
Total Stockholders’ Equity	17,979	18,984
Noncontrolling interests	2,478	2,539
Total Equity	20,457	21,523
Total Liabilities and Equity	$ 55,496	$ 54,721

XML

Consolidated Balance Sheet (Parenthetical) - USD ($) $ in Millions	Mar. 31, 2021	Dec. 31, 2020
Statement of Financial Position [Abstract]
Allowance for doubtful accounts	$ 51	$ 37
Common stock authorized (in shares)	2,500,000,000	2,500,000,000
Common stock, par value (in usd per share)	$ 0.01	$ 0.01
Common stock issued (in shares)	649,638,881	648,643,223
Treasury stock (in shares)	211,771,827	211,771,827

XML

Consolidated Statement of Cash Flows - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Cash Flows From Operating Activities
Net loss	$ (639)	$ (2,427)
Adjustments to reconcile net loss to net cash provided by operating activities
Depreciation and amortization	356	342
Impairments	198	3,006
Accretion on discounted liabilities	6	6
Deferred income taxes	(103)	(47)
Undistributed equity earnings	217	(4)
Net gain on dispositions	0	(1)
Other	138	(139)
Working capital adjustments
Accounts and notes receivable	(1,740)	3,900
Inventories	(377)	(1,620)
Prepaid expenses and other current assets	(283)	(90)
Accounts payable	2,779	(3,239)
Taxes and other accruals	(281)	530
Net Cash Provided by Operating Activities	271	217
Cash Flows From Investing Activities
Capital expenditures and investments	(331)	(923)
Return of investments in equity affiliates	58	38
Proceeds from asset dispositions	0	1
Advances/loans—related parties	(155)	(8)
Other	(39)	15
Net Cash Used in Investing Activities	(467)	(877)
Cash Flows From Financing Activities
Issuance of debt	450	1,199
Repayment of debt	(925)	(7)
Issuance of common stock	20	6
Repurchase of common stock	0	(443)
Dividends paid on common stock	(394)	(396)
Distributions to noncontrolling interests	(76)	(61)
Other	(20)	(22)
Net Cash Provided by (Used in) Financing Activities	(945)	276
Effect of Exchange Rate Changes on Cash and Cash Equivalents	(22)	(9)
Net Change in Cash and Cash Equivalents	(1,163)	(393)
Cash and cash equivalents at beginning of period	2,514	1,614
Cash and Cash Equivalents at End of Period	$ 1,351	$ 1,221

XML

Consolidated Statement of Changes in Equity - USD ($) $ in Millions	Total	Par Value	Capital in Excess of Par	Treasury Stock	Retained Earnings	Accum. Other Comprehensive Loss	Noncontrolling Interests
Beginning Balance at Dec. 31, 2019	$ 27,169	$ 6	$ 20,301	$ (16,673)	$ 22,064	$ (788)	$ 2,259
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(2,427)				(2,496)		69
Other comprehensive income	(208)					(208)
Dividends paid on common stock	(396)				(396)
Repurchase of common stock	(443)			(443)
Benefit plan activity	2		4		(2)
Distributions to noncontrolling interests	(61)						(61)
Other	3				(2)	5
Ending Balance at Mar. 31, 2020	$ 23,639	6	20,305	(17,116)	19,168	(991)	2,267
Beginning balance, common stock issued (in shares) at Dec. 31, 2019	647,416,633
Beginning balance, treasury stock (in shares) at Dec. 31, 2019	206,390,806
Stockholders' Equity, Shares [Roll Forward]
Repurchase of common stock (in shares)	5,381,021
Shares issued - share-based compensation (in shares)	1,029,901
Ending balance, common stock issued (in shares) at Mar. 31, 2020	648,446,534
Ending balance, treasury stock (in shares) at Mar. 31, 2020	211,771,827
Beginning Balance at Dec. 31, 2020	$ 21,523	6	20,383	(17,116)	16,500	(789)	2,539
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(639)				(654)		15
Other comprehensive income	9					9
Dividends paid on common stock	(394)				(394)
Benefit plan activity	34		37		(3)
Distributions to noncontrolling interests	(76)						(76)
Ending Balance at Mar. 31, 2021	$ 20,457	$ 6	$ 20,420	$ (17,116)	$ 15,449	$ (780)	$ 2,478
Beginning balance, common stock issued (in shares) at Dec. 31, 2020	648,643,223
Beginning balance, treasury stock (in shares) at Dec. 31, 2020	211,771,827
Stockholders' Equity, Shares [Roll Forward]
Repurchase of common stock (in shares)	0
Shares issued - share-based compensation (in shares)	995,658
Ending balance, common stock issued (in shares) at Mar. 31, 2021	649,638,881
Ending balance, treasury stock (in shares) at Mar. 31, 2021	211,771,827

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Consolidated Statement of Changes in Equity (Parenthetical) - $ / shares	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Statement of Stockholders' Equity [Abstract]
Dividends paid per common stock (in usd per share)	$ 0.90	$ 0.90

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Interim Financial Information	3 Months Ended
	Mar. 31, 2021
Interim Financial Information [Abstract]
Interim Financial Information	Interim Financial InformationThe unaudited interim financial information presented in the financial statements included in this report is prepared in accordance with generally accepted accounting principles in the United States (GAAP) and includes all known accruals and adjustments necessary, in the opinion of management, for a fair presentation of the consolidated financial position of Phillips 66 and its results of operations and cash flows for the periods presented. Unless otherwise specified, all such adjustments are of a normal and recurring nature. Certain notes and other information have been condensed or omitted from the interim financial statements included in this report. Therefore, these interim financial statements should be read in conjunction with the consolidated financial statements and notes included in our 2020 Annual Report on Form 10-K. The results of operations for the three months ended March 31, 2021, are not necessarily indicative of the results expected for the full year.

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Sales and Other Operating Revenues

3 Months Ended

Mar. 31, 2021

Revenue from Contract with Customer [Abstract]

Sales and Other Operating Revenues

Sales and Other Operating Revenues

Disaggregated Revenues

The following tables present our disaggregated sales and other operating revenues:

	Millions of Dollars
	Three Months Ended March 31
	2021		2020
Product Line and Services
Refined petroleum products	$	16,343	16,157
Crude oil resales	3,189		2,877
Natural gas liquids (NGL)	1,774		979
Services and other*	321		865
Consolidated sales and other operating revenues	$	21,627	20,878
Geographic Location**
United States	$	16,612	15,710
United Kingdom	2,287		2,309
Germany	817		858
Other foreign countries	1,911		2,001
Consolidated sales and other operating revenues	$	21,627	20,878
* Includes derivatives-related activities. See Note 12—Derivatives and Financial Instruments, for additional information.
** Sales and other operating revenues are attributable to countries based on the location of the operations generating the revenues.

Contract-Related Assets and Liabilities

At March 31, 2021, and December 31, 2020, receivables from contracts with customers were $5,375 million and $3,911 million, respectively. Significant noncustomer balances, such as buy/sell receivables and excise tax receivables, were excluded from these amounts.

Our contract-related assets also include payments we make to our marketing customers related to incentive programs. An incentive payment is initially recognized as an asset and subsequently amortized as a reduction to revenue over the contract term, which generally ranges from 5 to 15 years. At March 31, 2021, and December 31, 2020, our asset balances related to such payments were $414 million and $404 million, respectively.

Our contract liabilities represent advances from our customers prior to product or service delivery. At March 31, 2021, and December 31, 2020, contract liabilities were immaterial.

Remaining Performance ObligationsMost of our contracts with customers are spot contracts or term contracts with only variable consideration. We do not disclose remaining performance obligations for these contracts as the expected duration is one year or less or because the variable consideration has been allocated entirely to the unsatisfied performance obligations. We also have certain contracts in our Midstream segment that include minimum volume commitments with fixed pricing, which mostly expire by 2022. At March 31, 2021, the remaining performance obligations related to these minimum volume commitment contracts were immaterial.

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Credit Losses

3 Months Ended

Mar. 31, 2021

Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]

Credit Losses

Credit Losses

We are exposed to credit losses primarily through our sales of refined petroleum products, crude oil and NGL. We assess each counterparty’s ability to pay for the products we sell by conducting a credit review. The credit review considers our expected billing exposure and timing for payment and the counterparty’s established credit rating or our assessment of the counterparty’s creditworthiness based on our analysis of their financial statements when a credit rating is not available. We also consider contract terms and conditions, country and political risk, and business strategy in our evaluation. A credit limit is established for each counterparty based on the outcome of this review. We may require collateralized asset support or a prepayment to mitigate credit risk.

We monitor our ongoing credit exposure through active review of counterparty balances against contract terms and due dates. Our activities include timely account reconciliations, dispute resolution and payment confirmations. We may employ collection agencies and legal counsel to pursue recovery of defaulted receivables.

The negative economic impacts associated with Coronavirus Disease 2019 (COVID-19) have increased the probability that certain of our counterparties may not be able to completely fulfill their obligations in a timely manner. In response, we have enhanced our credit monitoring, sought collateral to support some transactions, and required prepayments from higher-risk counterparties.

At March 31, 2021, and December 31, 2020, we reported $8,165 million and $6,522 million of accounts and notes receivable, net of allowances of $51 million and $37 million, respectively. Based on an aging analysis at March 31, 2021, more than 95% of our accounts receivable were outstanding less than 60 days.

We are also exposed to credit losses from off-balance sheet exposures, such as guarantees of joint venture debt and standby letters of credit. See Note 10—Guarantees, and Note 11—Contingencies and Commitments, for more information on these off-balance sheet exposures.

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Inventories

3 Months Ended

Mar. 31, 2021

Inventory Disclosure [Abstract]

Inventories

Inventories

Inventories consisted of the following:

	Millions of Dollars
	March 31 2021		December 31 2020
Crude oil and petroleum products	$	3,915	3,536
Materials and supplies	358		357
	$	4,273	3,893

Inventories valued on the last-in, first-out (LIFO) basis totaled $3,740 million and $3,368 million at March 31, 2021, and December 31, 2020, respectively. The estimated excess of current replacement cost over LIFO cost of inventories amounted to approximately $4.2 billion and $2.7 billion at March 31, 2021, and December 31, 2020, respectively.

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Investments, Loans and Long-Term Receivables

3 Months Ended

Mar. 31, 2021

Equity Method Investments and Joint Ventures [Abstract]

Investments, Loans and Long-Term Receivables

Investments, Loans and Long-Term Receivables

Equity Investments

Dakota Access, LLC (Dakota Access) and Energy Transfer Crude Oil Company, LLC (ETCO)

In March 2019, a wholly owned subsidiary of Dakota Access issued $2.5 billion aggregate principal amount of senior unsecured notes. Dakota Access and ETCO have guaranteed repayment of the notes. In addition, Phillips 66 Partners LP (Phillips 66 Partners) and its co-venturers in Dakota Access provided a Contingent Equity Contribution Undertaking (CECU) in conjunction with the notes offering. Under the CECU, the co-venturers may be severally required to make proportionate equity contributions to Dakota Access if there is an unfavorable final judgment in the ongoing litigation related to an easement granted by the U.S. Army Corps of Engineers (USACE) to allow the pipeline to be constructed under Lake Oahe in North Dakota. Contributions may be required if Dakota Access determines that the issues included in any such final judgment cannot be remediated and Dakota Access has or is projected to have insufficient funds to satisfy repayment of the notes. If Dakota Access undertakes remediation to cure issues raised in a final judgment, contributions may be required if any series of the notes become due, whether by acceleration or at maturity, during such time, to the extent Dakota Access has or is projected to have insufficient funds to pay such amounts. At March 31, 2021, Phillips 66 Partners’ share of the maximum potential equity contributions under the CECU was approximately $631 million.

In July 2020, the trial court presiding over the litigation vacated Dakota Access’ easement under Lake Oahe and ordered the Dakota Access Pipeline to be shut down and emptied of crude oil pending the preparation of an Environmental Impact Statement (EIS) by the USACE, which had been ordered by the court in March 2020 and is now expected to be completed by March 2022. In August 2020, pending an appeal of the trial court’s decisions, an appellate court denied Dakota Access’ motion to stay the order vacating the easement, but granted its motion to stay the order that the pipeline be shut down while the EIS is prepared. In January 2021, the appellate court affirmed the trial court’s order vacating the easement and directing the USACE to prepare an EIS and reversed the order directing the pipeline to be shut down. Notwithstanding that the easement has been vacated, in April 2021, the USACE indicated that it currently intends to allow the pipeline to continue to operate while it proceeds with the EIS. Currently, there is a motion for a permanent injunction to shut down the pipeline before the trial court that could be decided at any time. Additionally, Dakota Access has requested the appellate court to stay its January 2021 decision pending a filing and disposition of a petition for writ of certiorari to the U.S. Supreme Court.

If the pipeline is required to cease operations, either permanently or pending the preparation of the EIS, and should Dakota Access and ETCO not have sufficient funds to pay ongoing expenses, Phillips 66 Partners also could be required to support its share of the ongoing expenses, including scheduled interest payments on the notes of approximately $25 million annually, in addition to the potential obligations under the CECU.

At March 31, 2021, the aggregate book value of Phillips 66 Partners’ investments in Dakota Access and ETCO was $575 million.

CF United LLC (CF United)

We hold a 50% voting interest and a 48% economic interest in CF United, a retail marketing joint venture with operations primarily on the U.S. West Coast. CF United is considered a variable interest entity (VIE) because our co-venturer has an option to require us to purchase its interest based on a fixed multiple. The put option becomes effective July 1, 2023, and expires on March 31, 2024. The put option is viewed as a variable interest as the purchase price on the exercise date may not represent the then-current fair value of CF United. We have determined that we are not the primary beneficiary because we and our co-venturer jointly direct the activities of CF United that most significantly impact economic performance. At March 31, 2021, our maximum exposure to loss was comprised of our $334 million investment in CF United, and any potential future loss resulting from the put option should the purchase price based on a fixed multiple exceed the then-current fair value of CF United.

OnCue Holdings, LLC (OnCue)

We hold a 50% interest in OnCue, a joint venture that owns and operates retail convenience stores. We fully guaranteed various debt agreements of OnCue and our co-venturer did not participate in the guarantees. This entity is considered a VIE because our debt guarantees resulted in OnCue not being exposed to all potential losses. We have determined we are not the primary beneficiary because we do not have the power to direct the activities that most significantly impact economic performance. At March 31, 2021, our maximum exposure to loss was $178 million, which represented the book value of our investment in OnCue of $99 million and guaranteed debt obligations of $79 million.

Liberty Pipeline LLC (Liberty)

At March 31, 2021, Phillips 66 Partners held a 50% interest in Liberty, a joint venture formed to develop and construct the Liberty Pipeline system. Liberty was considered a VIE because it did not have sufficient equity at risk to fully fund the construction of all assets required for principal operations. It was determined that Phillips 66 Partners was not the primary beneficiary because Phillips 66 Partners and its co-venturer jointly directed the activities of Liberty that most significantly impact economic performance.

In the first quarter of 2021, Phillips 66 Partners’ decision to exit the Liberty Pipeline project resulted in a $198 million before-tax impairment of its investment in Liberty. The impairment is included in the “Impairments” line item on our consolidated statement of operations for the three months ended March 31, 2021. See Note 7—Impairments, and Note 13—Fair Value Measurements, for additional information regarding the impairment and the techniques used to determine the fair value of Phillips 66 Partners’ investment in Liberty. At March 31, 2021, the book value of Phillips 66 Partners’ investment in Liberty was $46 million.

In April 2021, Phillips 66 Partners transferred its ownership interest in Liberty to its co-venturer for cash and certain pipeline assets with an estimated fair value that approximated its book value at March 31, 2021.

Related Party Loans

We and our co-venturer provided member loans to WRB Refining LP (WRB). At March 31, 2021, our 50% share of the outstanding member loan balance, including accrued interest, was $434 million.

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Properties, Plants and Equipment

3 Months Ended

Mar. 31, 2021

Property, Plant and Equipment [Abstract]

Properties, Plants and Equipment

Properties, Plants and Equipment

Our gross investment in properties, plants and equipment (PP&E) and the associated accumulated depreciation and amortization (Accum. D&A) balances were as follows:

	Millions of Dollars
	March 31, 2021				December 31, 2020
	Gross PP&E		Accum. D&A	Net PP&E	Gross PP&E	Accum. D&A	Net PP&E
Midstream	$	12,184	2,796	9,388	12,313	2,815	9,498
Chemicals	—		—	—	—	—	—
Refining	25,095		12,351	12,744	24,647	12,019	12,628
Marketing and Specialties	1,770		994	776	1,815	1,007	808
Corporate and Other	1,455		686	769	1,448	666	782
	$	40,504	16,827	23,677	40,223	16,507	23,716

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Impairments

3 Months Ended

Mar. 31, 2021

Goodwill and Intangible Assets Disclosure [Abstract]

Impairments

Impairments

	Millions of Dollars
	Three Months Ended March 31
	2021		2020
Midstream	$	198	1,161
Refining	—		1,845
Total impairments	$	198	3,006

Equity Investments

Liberty

In the first quarter of 2021, Phillips 66 Partners decided to exit the Liberty Pipeline project, which had previously been deferred due to the challenging business environment caused by the COVID-19 pandemic. As a result, Phillips 66 Partners recorded a $198 million before-tax impairment to reduce the book value of its investment in Liberty at March 31, 2021, to estimated fair value.

DCP Midstream, LLC (DCP Midstream)

In the first quarter of 2020, the market value of DCP Partners, LP (DCP Partners) common units declined by approximately 85%. As a result, at March 31, 2020, the fair value of our investment in DCP Midstream was significantly lower than its book value. We concluded this difference was not temporary primarily due to its magnitude, and we recorded a $1,161 million before-tax impairment of our investment in the first quarter of 2020.

Goodwill

Our stock price declined significantly in the first quarter of 2020, mainly due to the disruption in global commodity and equity markets related to the COVID-19 pandemic. We assessed our goodwill for impairment due to the decline in our market capitalization and concluded that the carrying value of our Refining reporting unit at March 31, 2020, was greater than its fair value by an amount in excess of its goodwill balance. Accordingly, we recorded a before-tax goodwill impairment charge of $1,845 million in our Refining segment during the first quarter of 2020.

These impairment charges are included within the “Impairments” line item on our consolidated statement of operations. See Note 13—Fair Value Measurements, for additional information on the determination of fair value used to record these impairments.

Outlook

The COVID-19 pandemic continues to disrupt economic activities globally. Reduced demand for petroleum products has resulted in low refining margins and decreased volumes through refineries and logistics infrastructure. Demand for refined petroleum products started to recover following the distribution of COVID-19 vaccines at the beginning of 2021, and consequently, refining margins have improved. However, the depth and duration of the economic consequences of the COVID-19 pandemic remain uncertain. We continuously monitor our asset and investment portfolio for impairments, as well as optimization opportunities, in this challenging business environment. As such, additional impairments may be required in the future.

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Earnings (Loss) Per Share

3 Months Ended

Mar. 31, 2021

Earnings Per Share [Abstract]

Earnings (Loss) Per Share

Earnings (Loss) Per Share

The numerator of basic earnings (loss) per share (EPS) is net income (loss) attributable to Phillips 66, adjusted for noncancelable dividends paid on unvested share-based employee awards during the vesting period (participating securities). The denominator of basic EPS is the sum of the daily weighted-average number of common shares outstanding during the periods presented and fully vested stock and unit awards that have not yet been issued as common stock. The numerator of diluted EPS is also based on net income (loss) attributable to Phillips 66, which is reduced only by dividend equivalents paid on participating securities for which the dividends are more dilutive than the participation of the awards in the earnings (loss) of the periods presented. To the extent unvested stock, unit or option awards and vested unexercised stock options are dilutive, they are included with the weighted-average common shares outstanding in the denominator. Treasury stock is excluded from the denominator in both basic and diluted EPS.

	Three Months Ended March 31
	2021			2020
	Basic		Diluted	Basic	Diluted
Amounts Attributed to Phillips 66 Common Stockholders (millions):
Net loss attributable to Phillips 66	$	(654)	(654)	(2,496)	(2,496)
Income allocated to participating securities	(2)		(2)	(1)	(1)
Net loss available to common stockholders	$	(656)	(656)	(2,497)	(2,497)
Weighted-average common shares outstanding (thousands):	437,369		439,504	439,014	441,345
Effect of share-based compensation	2,135		—	2,331	—
Weighted-average common shares outstanding—EPS	439,504		439,504	441,345	441,345
Loss Per Share of Common Stock (dollars)	$	(1.49)	(1.49)	(5.66)	(5.66)

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Debt

3 Months Ended

Mar. 31, 2021

Debt Disclosure [Abstract]

Debt

Debt

2021 Debt Issuances and Repayments

At March 31, 2021, borrowings of $450 million were outstanding and $1 million in letters of credit had been drawn under Phillips 66 Partners’ $750 million revolving credit facility.

In April 2021, Phillips 66 Partners entered into a $450 million term loan agreement and borrowed the full amount. The term loan agreement has a maturity date of April 5, 2022, and the outstanding borrowings can be repaid at any time and from time to time, in whole or in part, without premium or penalty. Borrowings bear interest at a floating rate based on either a Eurodollar rate or a reference rate, plus a margin of 0.875%. Proceeds were primarily used to repay amounts borrowed under Phillips 66 Partners’ $750 million revolving credit facility.

In February 2021, Phillips 66 repaid $500 million outstanding principal balance of its floating-rate senior notes due February 2021.

2020 Term Loan Facility

On March 19, 2020, Phillips 66 entered into a $1 billion 364-day delayed draw term loan agreement (the Facility) and borrowed $1 billion under the Facility shortly thereafter. On April 6, 2020, Phillips 66 increased the size of the Facility to $2 billion, and in June 2020, the Facility was amended to extend the commitment period to September 19, 2020. We did not draw additional amounts under the Facility before the end of the commitment period or further extend the commitment period. In November 2020, we repaid $500 million of borrowings outstanding under the Facility, and the Facility was amended to extend the maturity date of the remaining $500 million outstanding borrowings from March 18, 2021, to November 20, 2023. Borrowings under the Facility bear interest at a floating rate based on either a Eurodollar rate or a reference rate, plus a margin determined by the credit rating of Phillips 66’s senior unsecured long-term debt. Phillips 66 used the proceeds for general corporate purposes.

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Guarantees

3 Months Ended

Mar. 31, 2021

Guarantees [Abstract]

Guarantees

Guarantees

At March 31, 2021, we were liable for certain contingent obligations under various contractual arrangements as described below. We recognize a liability for the fair value of our obligation as a guarantor for newly issued or modified guarantees. Unless the carrying amount of the liability is noted below, we have not recognized a liability either because the guarantees were issued prior to December 31, 2002, or because the fair value of the obligation is immaterial. In addition, unless otherwise stated, we are not currently performing with any significance under the guarantees and expect future performance to be either immaterial or have only a remote chance of occurrence.

Lease Residual Value Guarantees

Under the operating lease agreement for our headquarters facility in Houston, Texas, we have the option, at the end of the lease term in September 2025, to request to renew the lease, purchase the facility or assist the lessor in marketing it for resale. We have a residual value guarantee associated with the operating lease agreement with a maximum potential future exposure of $514 million at March 31, 2021. We also have residual value guarantees associated with railcar and airplane leases with maximum potential future payments totaling $371 million. These operating leases have remaining terms of up to nine years.

Guarantees of Joint Venture and Other Obligations

In March 2019, Phillips 66 Partners and its co-venturers in Dakota Access provided a CECU in conjunction with a senior unsecured notes offering. See Note 5—Investments, Loans and Long-Term Receivables, for additional information on Dakota Access and the CECU.

At March 31, 2021, we also had other guarantees outstanding for our portion of certain joint venture debt and purchase obligations, which have remaining terms of up to seven years. The maximum potential amount of future payments to third parties under these guarantees was approximately $197 million. Payment would be required if a joint venture defaults on its obligations.

Indemnifications

Over the years, we have entered into various agreements to sell ownership interests in certain corporations, joint ventures and assets that gave rise to indemnification. Agreements associated with these sales include indemnifications for taxes, litigation, environmental liabilities, permits and licenses, employee claims, and real estate tenant defaults. The provisions of these indemnifications vary greatly. The majority of these indemnifications are related to environmental issues, which generally have indefinite terms and potentially unlimited exposure. The carrying amount of recorded indemnifications was $145 million at both March 31, 2021, and December 31, 2020.

We amortize the indemnification liability over the relevant time period, if one exists, based on the facts and circumstances surrounding each type of indemnity. In cases where the indemnification term is indefinite, we will reverse the liability when we have information to support the reversal. Although it is reasonably possible future payments may exceed amounts recorded, due to the nature of the indemnifications, it is not possible to make a reasonable estimate of the maximum potential amount of future payments. At March 31, 2021, and December 31, 2020, environmental accruals for known contamination of $103 million and $104 million, respectively, were included in the carrying amount of the recorded indemnifications noted above. These environmental accruals were primarily included in the “Asset retirement obligations and accrued environmental costs” line item on our consolidated balance sheet. For additional information about environmental liabilities, see Note 11—Contingencies and Commitments.

Indemnification and Release Agreement

In 2012, in connection with our separation from ConocoPhillips, we entered into an Indemnification and Release Agreement. This agreement governs the treatment between ConocoPhillips and us of matters relating to indemnification, insurance, litigation responsibility and management, and litigation document sharing and cooperation arising in connection with the separation. Generally, the agreement provides for cross indemnities principally designed to place financial responsibility for the obligations and liabilities of our business with us and financial responsibility for the obligations and liabilities of ConocoPhillips’ business with ConocoPhillips. The agreement also establishes procedures for handling claims subject to indemnification and related matters.

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Contingencies and Commitments

3 Months Ended

Mar. 31, 2021

Commitments and Contingencies Disclosure [Abstract]

Contingencies and Commitments

Contingencies and Commitments

A number of lawsuits involving a variety of claims that arose in the ordinary course of business have been filed against us or are subject to indemnifications provided by us. We also may be required to remove or mitigate the effects on the environment of the placement, storage, disposal or release of certain chemical, mineral and petroleum substances at various active and inactive sites. We regularly assess the need for financial recognition or disclosure of these contingencies. In the case of all known contingencies (other than those related to income taxes), we accrue a liability when the loss is probable and the amount is reasonably estimable. If a range of amounts can be reasonably estimated and no amount within the range is a better estimate than any other amount, then the minimum of the range is accrued. We do not reduce these liabilities for potential insurance or third-party recoveries. If applicable, we accrue receivables for probable insurance or other third-party recoveries. In the case of income tax-related contingencies, we use a cumulative probability-weighted loss accrual in cases where sustaining a tax position is uncertain.

Based on currently available information, we believe it is remote that future costs related to known contingent liability exposures will exceed current accruals by an amount that would have a material adverse impact on our consolidated financial statements. As we learn new facts concerning contingencies, we reassess our position both with respect to accrued liabilities and other potential exposures. Estimates particularly sensitive to future changes include contingent liabilities recorded for environmental remediation, tax and legal matters. Estimated future environmental remediation costs are subject to change due to such factors as the uncertain magnitude of cleanup costs, the unknown time and extent of such remedial actions that may be required, and the determination of our liability in proportion to that of other potentially responsible parties. Estimated future costs related to tax and legal matters are subject to change as events evolve and as additional information becomes available during the administrative and litigation processes.

Environmental

We are subject to international, federal, state and local environmental laws and regulations. When we prepare our consolidated financial statements, we record accruals for environmental liabilities based on management’s best estimates, using information available at the time. We measure estimates and base contingent liabilities on currently available facts, existing technology and presently enacted laws and regulations, taking into account stakeholder and business considerations. When measuring contingent environmental liabilities, we also consider our prior experience in remediation of contaminated sites, other companies’ cleanup experience, and data released by the EPA or other organizations. We consider unasserted claims in our determination of environmental liabilities, and we accrue them in the period they are both probable and reasonably estimable.

Although liability for environmental remediation costs is generally joint and several for federal sites and frequently so for state sites, we are usually only one of many companies alleged to have liability at a particular site. Due to such joint and several liabilities, we could be responsible for all cleanup costs related to any site at which we have been designated as a potentially responsible party. We have been successful to date in sharing cleanup costs with other financially sound companies. Many of the sites for which we are potentially responsible are still under investigation by the EPA or the state agencies concerned. Prior to actual cleanup, those potentially responsible normally assess the site conditions, apportion responsibility and determine the appropriate remediation. In some instances, we may have no liability or may attain a settlement of liability. Where it appears that other potentially responsible parties may be financially unable to bear their proportional share, we consider this inability in estimating our potential liability, and we adjust our accruals accordingly. As a result of various acquisitions in the past, we assumed certain environmental obligations. Some of these environmental obligations are mitigated by indemnifications made by others for our benefit, although some of the indemnifications are subject to dollar and time limits.

We are currently participating in environmental assessments and cleanups at numerous federal Superfund and comparable state sites. After an assessment of environmental exposures for cleanup and other costs, we make accruals on an undiscounted basis (except those pertaining to sites acquired in a business combination, which we record on a discounted basis) for planned investigation and remediation activities for sites where it is probable future costs will be incurred and these costs can be reasonably estimated. At March 31, 2021, our total environmental accruals were $437 million, compared with $427 million at December 31, 2020. We expect to incur a substantial amount of these expenditures within the next 30 years. We have not reduced these accruals for possible insurance recoveries. In the future, we may be involved in additional environmental assessments, cleanups and proceedings.

Legal Proceedings

Our legal organization applies its knowledge, experience and professional judgment to the specific characteristics of our cases, employing a litigation management process to manage and monitor the legal proceedings against us. Our process facilitates the early evaluation and quantification of potential exposures in individual cases and enables the tracking of those cases that have been scheduled for trial and/or mediation. Based on professional judgment and experience in using these litigation management tools and available information about current developments in all our cases, our legal organization regularly assesses the adequacy of current accruals and determines if adjustment of existing accruals, or establishment of new accruals, is required.

Other Contingencies

We have contingent liabilities resulting from throughput agreements with pipeline and processing companies not associated with financing arrangements. Under these agreements, we may be required to provide any such company with additional funds through advances and penalties for fees related to throughput capacity not utilized.

At March 31, 2021, we had performance obligations secured by letters of credit and bank guarantees of $791 million related to various purchase and other commitments incident to the ordinary conduct of business.

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Derivatives and Financial Instruments

3 Months Ended

Mar. 31, 2021

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Derivatives and Financial Instruments

Derivatives and Financial Instruments

Derivative Instruments

We use financial and commodity-based derivative contracts to manage exposures to fluctuations in commodity prices, interest rates and foreign currency exchange rates, or to capture market opportunities. Because we do not apply hedge accounting for commodity derivative contracts, all realized and unrealized gains and losses from commodity derivative contracts are recognized in our consolidated statement of operations. Gains and losses from derivative contracts held for trading not directly related to our physical business are reported net in the “Other income” line item on our consolidated statement of operations. Cash flows from all our derivative activity for the periods presented appear in the operating section on our consolidated statement of cash flows.

Purchase and sales contracts with firm minimum notional volumes for commodities that are readily convertible to cash are recorded on our consolidated balance sheet as derivatives unless the contracts are eligible for, and we elect, the normal purchases and normal sales exception, whereby the contracts are recorded on an accrual basis. We generally apply the normal purchases and normal sales exception to eligible crude oil, refined petroleum product, NGL, natural gas and power commodity contracts to purchase or sell quantities we expect to use or sell in the normal course of business. All other derivative instruments are recorded at fair value on our consolidated balance sheet. For further information on the fair value of derivatives, see Note 13—Fair Value Measurements.

Commodity Derivative Contracts—We sell into or receive supply from the worldwide crude oil, refined petroleum product, NGL, natural gas and electric power markets, exposing our revenues, purchases, cost of operating activities and cash flows to fluctuations in the prices for these commodities. Generally, our policy is to remain exposed to the market prices of commodities; however, we use futures, forwards, swaps and options in various markets to balance physical systems, meet customer needs, manage price exposures on specific transactions, and do a limited amount of trading not directly related to our physical business, all of which may reduce our exposure to fluctuations in market prices. We also use the market knowledge gained from these activities to capture market opportunities such as moving physical commodities to more profitable locations, storing commodities to capture seasonal or time premiums, and blending commodities to capture quality upgrades.

The following table indicates the consolidated balance sheet line items that include the fair values of commodity derivative assets and liabilities. The balances in the following table are presented on a gross basis, before the effects of counterparty and collateral netting. However, we have elected to present our commodity derivative assets and liabilities with the same counterparty on a net basis on our consolidated balance sheet when the legal right of offset exists.

	Millions of Dollars
	March 31, 2021					December 31, 2020
	Commodity Derivatives			Effect of Collateral Netting	Net Carrying Value Presented on the Balance Sheet	Commodity Derivatives		Effect of Collateral Netting	Net Carrying Value Presented on the Balance Sheet
	Assets		Liabilities			Assets	Liabilities
Assets
Prepaid expenses and other current assets	$	652	(595)	(8)	49	13	—	—	13
Other assets	17		(16)	—	1	5	(4)	—	1
Liabilities
Other accruals	437		(529)	78	(14)	665	(721)	46	(10)
Total	$	1,106	(1,140)	70	36	683	(725)	46	4

At March 31, 2021, and December 31, 2020, there was no material cash collateral received or paid that was not offset on our consolidated balance sheet.

The realized and unrealized gains (losses) incurred from commodity derivatives, and the line items where they appear on our consolidated statement of operations, were:

	Millions of Dollars
	Three Months Ended March 31
	2021		2020
Sales and other operating revenues	$	(123)	679
Other income	1		3
Purchased crude oil and products	(135)		441
Net gain (loss) from commodity derivative activity	$	(257)	1,123

The following table summarizes our material net exposures resulting from outstanding commodity derivative contracts. These financial and physical derivative contracts are primarily used to manage price exposure on our underlying operations. The underlying exposures may be from nonderivative positions such as inventory volumes. Financial derivative contracts may also offset physical derivative contracts, such as forward purchase and sales contracts. The percentage of our derivative contract volumes expiring within the next 12 months was more than 95% at March 31, 2021, and December 31, 2020.

	Open Position Long / (Short)
	March 31 2021	December 31 2020
Commodity
Crude oil, refined petroleum products and NGL (millions of barrels)	(25)	(13)

Interest Rate Derivative Contracts—In 2016, we entered into interest rate swaps to hedge the variability of lease payments on our headquarters facility. These monthly lease payments vary based on monthly changes in the one-month London Interbank Offered Rate (LIBOR) and changes, if any, in our credit rating. The pay-fixed, receive-floating interest rate swaps have an aggregate notional value of $650 million and ended in April 2021. We have designated these swaps as cash flow hedges.

The aggregate net fair value of these swaps was immaterial at March 31, 2021, and December 31, 2020. We report the mark-to-market gains or losses on our interest rate swaps designated as highly effective cash flow hedges as a component of other comprehensive income (loss), and reclassify such gains and losses into earnings (loss) in the same period during which the hedged transaction affects earnings (loss). Net realized gains and losses from settlements of the swaps were immaterial for the three months ended March 31, 2021 and 2020.

Credit Risk from Derivative Instruments

The credit risk from our derivative contracts, such as forwards and swaps, derives from the counterparty to the transaction. Individual counterparty exposure is managed within predetermined credit limits and includes the use of cash-call margins when appropriate, thereby reducing the risk of significant nonperformance. We also use futures, swaps and option contracts that have a negligible credit risk because these trades are cleared with an exchange clearinghouse and subject to mandatory margin requirements, typically on a daily basis, until settled.

Certain of our derivative instruments contain provisions that require us to post collateral if the derivative exposure exceeds a threshold amount. We have contracts with fixed threshold amounts and other contracts with variable threshold amounts that are contingent on our credit rating. The variable threshold amounts typically decline for lower credit ratings, while both the variable and fixed threshold amounts typically revert to zero if our credit ratings fall below investment grade. Cash is the primary collateral in all contracts; however, many contracts also permit us to post letters of credit as collateral.

The aggregate fair values of all derivative instruments with such credit-risk-related contingent features that were in a liability position were immaterial at March 31, 2021, and December 31, 2020.

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Fair Value Measurements

3 Months Ended

Mar. 31, 2021

Fair Value Disclosures [Abstract]

Fair Value Measurements

Fair Value Measurements

Recurring Fair Value Measurements

We carry certain assets and liabilities at fair value, which we measure at the reporting date using the price that would be received to sell an asset or paid to transfer a liability (i.e., an exit price), and disclose the quality of these fair values based on the valuation inputs used in these measurements under the following hierarchy:

•Level 1: Fair value measured with unadjusted quoted prices from an active market for identical assets or liabilities.

•Level 2: Fair value measured either with: (1) adjusted quoted prices from an active market for similar assets or liabilities; or (2) other valuation inputs that are directly or indirectly observable.

•Level 3: Fair value measured with unobservable inputs that are significant to the measurement.

We classify the fair value of an asset or liability based on the significance of its observable or unobservable inputs to the measurement. However, the fair value of an asset or liability initially reported as Level 3 will be subsequently reported as Level 2 if the unobservable inputs become inconsequential to its measurement or corroborating market data becomes available. Conversely, an asset or liability initially reported as Level 2 will be subsequently reported as Level 3 if corroborating market data becomes unavailable.

We used the following methods and assumptions to estimate the fair value of financial instruments:

•Cash and cash equivalents—The carrying amount reported on our consolidated balance sheet approximates fair value.

•Accounts and notes receivable—The carrying amount reported on our consolidated balance sheet approximates fair value.

•Derivative instruments—We fair value our exchange-traded contracts based on quoted market prices obtained from the New York Mercantile Exchange, the Intercontinental Exchange or other exchanges, and classify them as Level 1 in the fair value hierarchy. When exchange-cleared contracts lack sufficient liquidity, or are valued using either adjusted exchange-provided prices or nonexchange quotes, we classify those contracts as Level 2.

Physical commodity forward purchase and sales contracts and over-the-counter (OTC) financial swaps are generally valued using forward quotes provided by brokers and price index developers, such as Platts and Oil Price Information Service. We corroborate these quotes with market data and classify the resulting fair values as Level 2. When forward market prices are not available, we estimate fair value using the forward price of a similar commodity, adjusted for the difference in quality or location. In certain less liquid markets or for longer-term contracts, forward prices are not as readily available. In these circumstances, physical commodity purchase and sales contracts and OTC swaps are valued using internally developed methodologies that consider historical relationships among various commodities that result in management’s best estimate of fair value. We classify these contracts as Level 3. Physical and OTC commodity options are valued using industry-standard models that consider various assumptions, including quoted forward prices for commodities, time value, volatility factors and contractual prices for the underlying instruments, as well as other relevant economic measures. The degree to which these inputs are observable in the forward markets determines whether the options are classified as Level 2 or 3. We use a midmarket pricing convention (the midpoint between bid and ask prices). When appropriate, valuations are adjusted to reflect credit considerations, generally based on available market evidence.

We determine the fair value of our interest rate swaps based on observable market valuations for interest rate swaps that have notional amounts, terms and pay and reset frequencies similar to ours.

•Rabbi trust assets—These deferred compensation investments are measured at fair value using unadjusted quoted prices available from national securities exchanges and are therefore categorized as Level 1 in the fair value hierarchy.

•Debt—The carrying amount of our floating-rate debt approximates fair value. The fair value of our fixed-rate debt is estimated based on observable market prices.

The following tables display the fair value hierarchy for our financial assets and liabilities either accounted for or disclosed at fair value on a recurring basis. These values are determined by treating each contract as the fundamental unit of account; therefore, derivative assets and liabilities with the same counterparty are shown on a gross basis in the hierarchy sections of these tables, before the effects of counterparty and collateral netting. The following tables also reflect the effect of netting derivative assets and liabilities with the same counterparty for which we have the legal right of offset and collateral netting.

The carrying values and fair values by hierarchy of our financial assets and liabilities, either carried or disclosed at fair value, including any effects of counterparty and collateral netting, were:

	Millions of Dollars
	March 31, 2021
	Fair Value Hierarchy				Total Fair Value of Gross Assets & Liabilities	Effect of Counterparty Netting	Effect of Collateral Netting	Difference in Carrying Value and Fair Value	Net Carrying Value Presented on the Balance Sheet
	Level 1		Level 2	Level 3
Commodity Derivative Assets
Exchange-cleared instruments	$	746	337	—	1,083	(1,048)	(8)	—	27
Physical forward contracts	—		23	—	23	—	—	—	23
Rabbi trust assets	150		—	—	150	N/A	N/A	—	150
	$	896	360	—	1,256	(1,048)	(8)	—	200
Commodity Derivative Liabilities
Exchange-cleared instruments	$	794	332	—	1,126	(1,048)	(78)	—	—
OTC instruments	—		1	—	1	—	—	—	1
Physical forward contracts	—		13	—	13	—	—	—	13
Interest-rate derivatives	—		1	—	1	—	—	—	1
Floating-rate debt	—		1,475	—	1,475	N/A	N/A	—	1,475
Fixed-rate debt, excluding finance leases	—		15,064	—	15,064	N/A	N/A	(1,391)	13,673
	$	794	16,886	—	17,680	(1,048)	(78)	(1,391)	15,163

	Millions of Dollars
	December 31, 2020
	Fair Value Hierarchy				Total Fair Value of Gross Assets & Liabilities	Effect of Counterparty Netting	Effect of Collateral Netting	Difference in Carrying Value and Fair Value	Net Carrying Value Presented on the Balance Sheet
	Level 1		Level 2	Level 3
Commodity Derivative Assets
Exchange-cleared instruments	$	314	356	—	670	(669)	—	—	1
Physical forward contracts	—		13	—	13	—	—	—	13
Rabbi trust assets	143		—	—	143	N/A	N/A	—	143
	$	457	369	—	826	(669)	—	—	157
Commodity Derivative Liabilities
Exchange-cleared instruments	$	351	364	—	715	(669)	(46)	—	—
Physical forward contracts	—		10	—	10	—	—	—	10
Interest-rate derivatives	—		3	—	3	—	—	—	3
Floating-rate debt	—		1,940	—	1,940	N/A	N/A	—	1,940
Fixed-rate debt, excluding finance leases	—		15,597	—	15,597	N/A	N/A	(1,927)	13,670
	$	351	17,914	—	18,265	(669)	(46)	(1,927)	15,623

The rabbi trust assets are recorded in the “Investments and long-term receivables” line item, and floating-rate and fixed-rate debt are recorded in the “Short-term debt” and “Long-term debt” line items on our consolidated balance sheet. See Note 12—Derivatives and Financial Instruments, for information regarding where the assets and liabilities related to our commodity and interest rate derivatives are recorded on our consolidated balance sheet.

Nonrecurring Fair Value Measurements

Equity Investments

In the first quarter of 2021, Phillips 66 Partners wrote down the book value of its investment in Liberty to estimated fair value using a Level 3 nonrecurring fair value measurement. This nonrecurring measurement was based on the estimated fair value of Phillip 66 Partners’ share of the joint venture’s pipeline assets and net working capital. See Note 5—Investments, Loans and Long-Term Receivables, for more information regarding Phillips 66 Partners’ transfer of its ownership in Liberty to its co-venturer in April 2021.

In the first quarter of 2020, the nonrecurring fair value measurement used to record an impairment of our DCP Midstream investment was the fair value of our share of DCP Midstream’s limited partner interest in DCP Partners, which was estimated based on average market prices of DCP Partners common units for a multi-day trading period encompassing March 31, 2020. This valuation resulted in a Level 2 nonrecurring fair value measurement.

Goodwill

The carrying value of the Refining reporting unit’s goodwill was remeasured to fair value on a nonrecurring basis in the first quarter of 2020.  The fair value of the Refining reporting unit was calculated by weighting the results from the income approach and the market approach.  The income approach used a discounted cash flow model that included various observable and nonobservable inputs, such as prices, volumes, expenses, capital expenditures, discount rates and projected long-term growth rates and terminal values. The market approach used peer company enterprise values relative to current and future net income (loss) before net interest expense, income taxes, depreciation and amortization (EBITDA) projections to arrive at an average multiple.  This multiple was applied to the reporting unit’s current and projected EBITDA, with consideration for an estimated market participant acquisition premium.  The resulting Level 3 fair value estimate was less than the Refining reporting unit’s carrying value by an amount that exceeded the existing goodwill balance of the reporting unit.  As a result, the Refining reporting unit’s goodwill was impaired to zero. As part of our impairment analysis, the fair value of all reporting units was reconciled to the company’s market capitalization.

See Note 7—Impairments, for additional information on the above impairments.

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Pension and Postretirement Plans

3 Months Ended

Mar. 31, 2021

Retirement Benefits [Abstract]

Pension and Postretirement Plans

Pension and Postretirement Plans

The components of net periodic benefit cost for the three months ended March 31, 2021 and 2020, were as follows:

	Millions of Dollars
	Pension Benefits					Other Benefits
	2021			2020		2021	2020
	U.S.		Int’l.	U.S.	Int’l.
Components of Net Periodic Benefit Cost
Three Months Ended March 31
Service cost	$	37	9	33	7	1	1
Interest cost	20		5	25	6	1	2
Expected return on plan assets	(41)		(15)	(41)	(13)	—	—
Amortization of prior service credit	—		—	—	—	(1)	(1)
Recognized net actuarial loss	15		6	14	4	—	—
Net periodic benefit cost*	$	31	5	31	4	1	2
* Included in the “Operating expenses” and “Selling, general and administrative expenses” line items on our consolidated statement of operations.

During the three months ended March 31, 2021, we contributed $5 million to our U.S. pension and other postretirement benefit plans and $7 million to our international pension plans. We currently expect to make additional contributions of approximately $35 million to our U.S. pension and other postretirement benefit plans and $23 million to our international pension plans during the remainder of 2021.

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Accumulated Other Comprehensive Loss

3 Months Ended

Mar. 31, 2021

Equity [Abstract]

Accumulated Other Comprehensive Loss

Accumulated Other Comprehensive Loss

Changes in the balances of each component of accumulated other comprehensive loss were as follows:

	Millions of Dollars
	Defined Benefit Plans		Foreign Currency Translation	Hedging	Accumulated Other Comprehensive Loss
December 31, 2020	$	(809)	25	(5)	(789)
Other comprehensive income (loss) before reclassifications	5		(15)	—	(10)
Amounts reclassified from accumulated other comprehensive loss
Defined benefit plans*
Amortization of net actuarial loss and prior service credit	17		—	—	17
Foreign currency translation	—		—	—	—
Hedging	—		—	2	2
Net current period other comprehensive income (loss)	22		(15)	2	9
March 31, 2021	$	(787)	10	(3)	(780)
December 31, 2019	$	(656)	(131)	(1)	(788)
Other comprehensive income (loss) before reclassifications	1		(221)	(7)	(227)
Amounts reclassified from accumulated other comprehensive loss
Defined benefit plans*
Amortization of net actuarial loss and prior service credit	19		—	—	19
Foreign currency translation	—		—	—	—
Hedging	—		—	—	—
Net current period other comprehensive income (loss)	20		(221)	(7)	(208)
Other	—		5	—	5
March 31, 2020	$	(636)	(347)	(8)	(991)
* Included in the computation of net periodic benefit cost. See Note 14—Pension and Postretirement Plans, for additional information.

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Related Party Transactions

3 Months Ended

Mar. 31, 2021

Related Party Transactions [Abstract]

Related Party Transactions

Related Party Transactions

Significant transactions with related parties were:

	Millions of Dollars
	Three Months Ended March 31
	2021		2020
Operating revenues and other income (a)	$	770	534
Purchases (b)	2,357		2,126
Operating expenses and selling, general and administrative expenses (c)	68		51

(a)We sold NGL, other petrochemical feedstocks and solvents to Chevron Phillips Chemical Company LLC (CPChem), NGL and certain feedstocks to DCP Midstream, gas oil and hydrogen feedstocks to Excel Paralubes (Excel), and refined petroleum products to several of our equity affiliates in the Marketing and Specialties segment, including OnCue and CF United. We also sold certain feedstocks and intermediate products to WRB and acted as an agent for WRB in supplying crude oil and other feedstocks for a fee. In addition, we charged several of our equity affiliates, including CPChem, for the use of common facilities, such as steam generators, waste and water treaters and warehouse facilities.

(b)We purchased crude oil, refined petroleum products, NGL and solvents from WRB. We also purchased natural gas and NGL from DCP Midstream and CPChem, as well as other feedstocks from various equity affiliates, for use in our refinery and fractionation processes. In addition, we purchased base oils and fuel products from Excel for use in our specialty and refining businesses. We paid NGL fractionation fees to CPChem. We also paid fees to various pipeline equity affiliates for transporting crude oil, refined petroleum products and NGL.

(c)We paid consignment fees to CF United, and utility and processing fees to various equity affiliates.

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Segment Disclosures and Related Information

3 Months Ended

Mar. 31, 2021

Segment Reporting [Abstract]

Segment Disclosures and Related Information

Segment Disclosures and Related Information

Our operating segments are:

1)Midstream—Provides crude oil and refined petroleum product transportation, terminaling and processing services, as well as natural gas and NGL transportation, storage, fractionation, processing, and marketing services, mainly in the United States. The Midstream segment includes our master limited partnership (MLP), Phillips 66 Partners, as well as our 50% equity investment in DCP Midstream.

2)Chemicals—Consists of our 50% equity investment in CPChem, which manufactures and markets petrochemicals and plastics on a worldwide basis.

3)Refining—Refines crude oil and other feedstocks into petroleum products, such as gasoline, distillates and aviation fuels, at 13 refineries in the United States and Europe.

4)Marketing and Specialties—Purchases for resale and markets refined petroleum products, mainly in the United States and Europe. In addition, this segment includes the manufacturing and marketing of specialty products.

Corporate and Other includes general corporate overhead, interest expense, our investment in new technologies, and various other corporate activities. Corporate assets include all cash, cash equivalents and income tax-related assets.

Intersegment sales are at prices that we believe approximate market.

Analysis of Results by Operating Segment

	Millions of Dollars
	Three Months Ended March 31
	2021		2020
Sales and Other Operating Revenues*
Midstream
Total sales	$	2,384	1,538
Intersegment eliminations	(627)		(495)
Total Midstream	1,757		1,043
Chemicals	1		1
Refining
Total sales	15,053		13,781
Intersegment eliminations	(8,456)		(7,633)
Total Refining	6,597		6,148
Marketing and Specialties
Total sales	13,598		14,249
Intersegment eliminations	(333)		(570)
Total Marketing and Specialties	13,265		13,679
Corporate and Other	7		7
Consolidated sales and other operating revenues	$	21,627	20,878
* See Note 2—Sales and Other Operating Revenues, for further details on our disaggregated sales and other operating revenues.
Income (Loss) Before Income Taxes
Midstream	$	76	(702)
Chemicals	154		169
Refining	(1,040)		(2,261)
Marketing and Specialties	290		513
Corporate and Other	(251)		(197)
Consolidated loss before income taxes	$	(771)	(2,478)

	Millions of Dollars
	March 31 2021		December 31 2020
Total Assets
Midstream	$	15,296	15,596
Chemicals	6,133		6,183
Refining	21,893		20,404
Marketing and Specialties	7,962		7,180
Corporate and Other	4,212		5,358
Consolidated total assets	$	55,496	54,721

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Income Taxes

3 Months Ended

Mar. 31, 2021

Income Tax Disclosure [Abstract]

Income Taxes

Income Taxes

Our effective income tax rate for the three months ended March 31, 2021, was 17%, compared with 2% for the corresponding period of 2020. The increase in our effective tax rate for the three months ended March 31, 2021, was primarily attributable to the current-year impact of our foreign operations and income attributable to noncontrolling interests and the prior-year impact of a nondeductible goodwill impairment and a net operating loss carryback to a year with a 35% tax rate.

The effective income tax rate for the three months ended March 31, 2021, varied from the U.S. federal statutory income tax rate of 21%, primarily due to foreign operations and income attributable to noncontrolling interests.

An income tax receivable of $1.5 billion, which reflects tax refunds we expect to receive within the next 12 months, is included in the “Accounts and notes receivable” line item on our consolidated balance sheet as of March 31, 2021.

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Phillips 66 Partners LP

3 Months Ended

Mar. 31, 2021

Limited Liability Company or Limited Partnership, Business Organization and Operations [Abstract]

Phillips 66 Partners LP

Phillips 66 Partners LP

Phillips 66 Partners, headquartered in Houston, Texas, is a publicly traded MLP formed in 2013 to own, operate, develop and acquire primarily fee-based midstream assets. Phillips 66 Partners’ operations currently consist of crude oil, refined petroleum product and NGL transportation, fractionation, processing, terminaling, and storage assets.

We consolidate Phillips 66 Partners because we determined it is a VIE of which we are the primary beneficiary. As general partner of Phillips 66 Partners, we have the ability to control its financial interests, as well as the ability to direct the activities that most significantly impact its economic performance. As a result of this consolidation, the public common and perpetual convertible preferred unitholders’ ownership interests in Phillips 66 Partners are reflected as noncontrolling interests in our financial statements. At March 31, 2021, we owned 170 million Phillips 66 Partners common units, representing a 74% limited partner interest in Phillips 66 Partners, while the public owned a 26% limited partner interest and 13.8 million perpetual convertible preferred units.

The most significant assets of Phillips 66 Partners that are available to settle only its obligations, along with its most significant liabilities for which its creditors do not have recourse to Phillips 66’s general credit, were:

	Millions of Dollars
	March 31 2021		December 31 2020
Equity investments*	$	3,029	3,244
Net properties, plants and equipment	3,646		3,639
Short-term debt	500		465
Long-term debt	3,444		3,444
* Included in the “Investments and long-term receivables” line item on the Phillips 66 consolidated balance sheet.

See Note 5—Investments, Loans and Long-Term Receivables, for further discussion regarding Phillips 66 Partners’ investments in Dakota Access and ETCO, and Liberty.

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Earnings (Loss) Per Share (Policies)

3 Months Ended

Mar. 31, 2021

Earnings Per Share [Abstract]

Earnings (Loss) Per Share

Earnings (Loss) Per Share The numerator of basic earnings (loss) per share (EPS) is net income (loss) attributable to Phillips 66, adjusted for noncancelable dividends paid on unvested share-based employee awards during the vesting period (participating securities). The denominator of basic EPS is the sum of the daily weighted-average number of common shares outstanding during the periods presented and fully vested stock and unit awards that have not yet been issued as common stock. The numerator of diluted EPS is also based on net income (loss) attributable to Phillips 66, which is reduced only by dividend equivalents paid on participating securities for which the dividends are more dilutive than the participation of the awards in the earnings (loss) of the periods presented. To the extent unvested stock, unit or option awards and vested unexercised stock options are dilutive, they are included with the weighted-average common shares outstanding in the denominator. Treasury stock is excluded from the denominator in both basic and diluted EPS.

Contingencies and Commitments

A number of lawsuits involving a variety of claims that arose in the ordinary course of business have been filed against us or are subject to indemnifications provided by us. We also may be required to remove or mitigate the effects on the environment of the placement, storage, disposal or release of certain chemical, mineral and petroleum substances at various active and inactive sites. We regularly assess the need for financial recognition or disclosure of these contingencies. In the case of all known contingencies (other than those related to income taxes), we accrue a liability when the loss is probable and the amount is reasonably estimable. If a range of amounts can be reasonably estimated and no amount within the range is a better estimate than any other amount, then the minimum of the range is accrued. We do not reduce these liabilities for potential insurance or third-party recoveries. If applicable, we accrue receivables for probable insurance or other third-party recoveries. In the case of income tax-related contingencies, we use a cumulative probability-weighted loss accrual in cases where sustaining a tax position is uncertain.

Recurring Fair Value Measurements

Recurring Fair Value Measurements

We carry certain assets and liabilities at fair value, which we measure at the reporting date using the price that would be received to sell an asset or paid to transfer a liability (i.e., an exit price), and disclose the quality of these fair values based on the valuation inputs used in these measurements under the following hierarchy:

•Level 1: Fair value measured with unadjusted quoted prices from an active market for identical assets or liabilities.

•Level 2: Fair value measured either with: (1) adjusted quoted prices from an active market for similar assets or liabilities; or (2) other valuation inputs that are directly or indirectly observable.

•Level 3: Fair value measured with unobservable inputs that are significant to the measurement.

We classify the fair value of an asset or liability based on the significance of its observable or unobservable inputs to the measurement. However, the fair value of an asset or liability initially reported as Level 3 will be subsequently reported as Level 2 if the unobservable inputs become inconsequential to its measurement or corroborating market data becomes available. Conversely, an asset or liability initially reported as Level 2 will be subsequently reported as Level 3 if corroborating market data becomes unavailable.

We used the following methods and assumptions to estimate the fair value of financial instruments:

•Cash and cash equivalents—The carrying amount reported on our consolidated balance sheet approximates fair value.

•Accounts and notes receivable—The carrying amount reported on our consolidated balance sheet approximates fair value.

•Derivative instruments—We fair value our exchange-traded contracts based on quoted market prices obtained from the New York Mercantile Exchange, the Intercontinental Exchange or other exchanges, and classify them as Level 1 in the fair value hierarchy. When exchange-cleared contracts lack sufficient liquidity, or are valued using either adjusted exchange-provided prices or nonexchange quotes, we classify those contracts as Level 2.

Physical commodity forward purchase and sales contracts and over-the-counter (OTC) financial swaps are generally valued using forward quotes provided by brokers and price index developers, such as Platts and Oil Price Information Service. We corroborate these quotes with market data and classify the resulting fair values as Level 2. When forward market prices are not available, we estimate fair value using the forward price of a similar commodity, adjusted for the difference in quality or location. In certain less liquid markets or for longer-term contracts, forward prices are not as readily available. In these circumstances, physical commodity purchase and sales contracts and OTC swaps are valued using internally developed methodologies that consider historical relationships among various commodities that result in management’s best estimate of fair value. We classify these contracts as Level 3. Physical and OTC commodity options are valued using industry-standard models that consider various assumptions, including quoted forward prices for commodities, time value, volatility factors and contractual prices for the underlying instruments, as well as other relevant economic measures. The degree to which these inputs are observable in the forward markets determines whether the options are classified as Level 2 or 3. We use a midmarket pricing convention (the midpoint between bid and ask prices). When appropriate, valuations are adjusted to reflect credit considerations, generally based on available market evidence.

We determine the fair value of our interest rate swaps based on observable market valuations for interest rate swaps that have notional amounts, terms and pay and reset frequencies similar to ours.

•Rabbi trust assets—These deferred compensation investments are measured at fair value using unadjusted quoted prices available from national securities exchanges and are therefore categorized as Level 1 in the fair value hierarchy.

•Debt—The carrying amount of our floating-rate debt approximates fair value. The fair value of our fixed-rate debt is estimated based on observable market prices.

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Sales and Other Operating Revenues (Tables)

3 Months Ended

Mar. 31, 2021

Revenue from Contract with Customer [Abstract]

Schedule of Disaggregation of Revenue

The following tables present our disaggregated sales and other operating revenues:

	Millions of Dollars
	Three Months Ended March 31
	2021		2020
Product Line and Services
Refined petroleum products	$	16,343	16,157
Crude oil resales	3,189		2,877
Natural gas liquids (NGL)	1,774		979
Services and other*	321		865
Consolidated sales and other operating revenues	$	21,627	20,878
Geographic Location**
United States	$	16,612	15,710
United Kingdom	2,287		2,309
Germany	817		858
Other foreign countries	1,911		2,001
Consolidated sales and other operating revenues	$	21,627	20,878
* Includes derivatives-related activities. See Note 12—Derivatives and Financial Instruments, for additional information.
** Sales and other operating revenues are attributable to countries based on the location of the operations generating the revenues.

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Inventories (Tables)

3 Months Ended

Mar. 31, 2021

Inventory Disclosure [Abstract]

Schedule of Inventories

Inventories consisted of the following:

	Millions of Dollars
	March 31 2021		December 31 2020
Crude oil and petroleum products	$	3,915	3,536
Materials and supplies	358		357
	$	4,273	3,893

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Properties, Plants and Equipment (Tables)

3 Months Ended

Mar. 31, 2021

Property, Plant and Equipment [Abstract]

Schedule of Properties, Plants and Equipment with Associated Accumulated Depreciation and Amortization

Our gross investment in properties, plants and equipment (PP&E) and the associated accumulated depreciation and amortization (Accum. D&A) balances were as follows:

	Millions of Dollars
	March 31, 2021				December 31, 2020
	Gross PP&E		Accum. D&A	Net PP&E	Gross PP&E	Accum. D&A	Net PP&E
Midstream	$	12,184	2,796	9,388	12,313	2,815	9,498
Chemicals	—		—	—	—	—	—
Refining	25,095		12,351	12,744	24,647	12,019	12,628
Marketing and Specialties	1,770		994	776	1,815	1,007	808
Corporate and Other	1,455		686	769	1,448	666	782
	$	40,504	16,827	23,677	40,223	16,507	23,716

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Impairments (Tables)

3 Months Ended

Mar. 31, 2021

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Impairments

	Millions of Dollars
	Three Months Ended March 31
	2021		2020
Midstream	$	198	1,161
Refining	—		1,845
Total impairments	$	198	3,006

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Earnings (Loss) Per Share (Tables)

3 Months Ended

Mar. 31, 2021

Earnings Per Share [Abstract]

Schedule of Reconciliation of Basic and Diluted Earnings Per Share

	Three Months Ended March 31
	2021			2020
	Basic		Diluted	Basic	Diluted
Amounts Attributed to Phillips 66 Common Stockholders (millions):
Net loss attributable to Phillips 66	$	(654)	(654)	(2,496)	(2,496)
Income allocated to participating securities	(2)		(2)	(1)	(1)
Net loss available to common stockholders	$	(656)	(656)	(2,497)	(2,497)
Weighted-average common shares outstanding (thousands):	437,369		439,504	439,014	441,345
Effect of share-based compensation	2,135		—	2,331	—
Weighted-average common shares outstanding—EPS	439,504		439,504	441,345	441,345
Loss Per Share of Common Stock (dollars)	$	(1.49)	(1.49)	(5.66)	(5.66)

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Derivatives and Financial Instruments (Tables)

3 Months Ended

Mar. 31, 2021

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Offsetting Liabilities

The following table indicates the consolidated balance sheet line items that include the fair values of commodity derivative assets and liabilities. The balances in the following table are presented on a gross basis, before the effects of counterparty and collateral netting. However, we have elected to present our commodity derivative assets and liabilities with the same counterparty on a net basis on our consolidated balance sheet when the legal right of offset exists.

	Millions of Dollars
	March 31, 2021					December 31, 2020
	Commodity Derivatives			Effect of Collateral Netting	Net Carrying Value Presented on the Balance Sheet	Commodity Derivatives		Effect of Collateral Netting	Net Carrying Value Presented on the Balance Sheet
	Assets		Liabilities			Assets	Liabilities
Assets
Prepaid expenses and other current assets	$	652	(595)	(8)	49	13	—	—	13
Other assets	17		(16)	—	1	5	(4)	—	1
Liabilities
Other accruals	437		(529)	78	(14)	665	(721)	46	(10)
Total	$	1,106	(1,140)	70	36	683	(725)	46	4

Offsetting Assets

The following table indicates the consolidated balance sheet line items that include the fair values of commodity derivative assets and liabilities. The balances in the following table are presented on a gross basis, before the effects of counterparty and collateral netting. However, we have elected to present our commodity derivative assets and liabilities with the same counterparty on a net basis on our consolidated balance sheet when the legal right of offset exists.

	Millions of Dollars
	March 31, 2021					December 31, 2020
	Commodity Derivatives			Effect of Collateral Netting	Net Carrying Value Presented on the Balance Sheet	Commodity Derivatives		Effect of Collateral Netting	Net Carrying Value Presented on the Balance Sheet
	Assets		Liabilities			Assets	Liabilities
Assets
Prepaid expenses and other current assets	$	652	(595)	(8)	49	13	—	—	13
Other assets	17		(16)	—	1	5	(4)	—	1
Liabilities
Other accruals	437		(529)	78	(14)	665	(721)	46	(10)
Total	$	1,106	(1,140)	70	36	683	(725)	46	4

Summary of Fair Value of Commodity Derivative Assets and Liabilities and Gains (Losses) from Derivative Contracts

The realized and unrealized gains (losses) incurred from commodity derivatives, and the line items where they appear on our consolidated statement of operations, were:

	Millions of Dollars
	Three Months Ended March 31
	2021		2020
Sales and other operating revenues	$	(123)	679
Other income	1		3
Purchased crude oil and products	(135)		441
Net gain (loss) from commodity derivative activity	$	(257)	1,123

Summary of Material Net Exposures and Notional Amount of Derivative Contracts

The following table summarizes our material net exposures resulting from outstanding commodity derivative contracts. These financial and physical derivative contracts are primarily used to manage price exposure on our underlying operations. The underlying exposures may be from nonderivative positions such as inventory volumes. Financial derivative contracts may also offset physical derivative contracts, such as forward purchase and sales contracts. The percentage of our derivative contract volumes expiring within the next 12 months was more than 95% at March 31, 2021, and December 31, 2020.

	Open Position Long / (Short)
	March 31 2021	December 31 2020
Commodity
Crude oil, refined petroleum products and NGL (millions of barrels)	(25)	(13)

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Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2021

Fair Value Disclosures [Abstract]

Schedule of Fair Value Hierarchy for Material Financial Instruments and Derivative Assets and Liabilities, Including the Effect of Counterparty Netting

The carrying values and fair values by hierarchy of our financial assets and liabilities, either carried or disclosed at fair value, including any effects of counterparty and collateral netting, were:

	Millions of Dollars
	March 31, 2021
	Fair Value Hierarchy				Total Fair Value of Gross Assets & Liabilities	Effect of Counterparty Netting	Effect of Collateral Netting	Difference in Carrying Value and Fair Value	Net Carrying Value Presented on the Balance Sheet
	Level 1		Level 2	Level 3
Commodity Derivative Assets
Exchange-cleared instruments	$	746	337	—	1,083	(1,048)	(8)	—	27
Physical forward contracts	—		23	—	23	—	—	—	23
Rabbi trust assets	150		—	—	150	N/A	N/A	—	150
	$	896	360	—	1,256	(1,048)	(8)	—	200
Commodity Derivative Liabilities
Exchange-cleared instruments	$	794	332	—	1,126	(1,048)	(78)	—	—
OTC instruments	—		1	—	1	—	—	—	1
Physical forward contracts	—		13	—	13	—	—	—	13
Interest-rate derivatives	—		1	—	1	—	—	—	1
Floating-rate debt	—		1,475	—	1,475	N/A	N/A	—	1,475
Fixed-rate debt, excluding finance leases	—		15,064	—	15,064	N/A	N/A	(1,391)	13,673
	$	794	16,886	—	17,680	(1,048)	(78)	(1,391)	15,163

	Millions of Dollars
	December 31, 2020
	Fair Value Hierarchy				Total Fair Value of Gross Assets & Liabilities	Effect of Counterparty Netting	Effect of Collateral Netting	Difference in Carrying Value and Fair Value	Net Carrying Value Presented on the Balance Sheet
	Level 1		Level 2	Level 3
Commodity Derivative Assets
Exchange-cleared instruments	$	314	356	—	670	(669)	—	—	1
Physical forward contracts	—		13	—	13	—	—	—	13
Rabbi trust assets	143		—	—	143	N/A	N/A	—	143
	$	457	369	—	826	(669)	—	—	157
Commodity Derivative Liabilities
Exchange-cleared instruments	$	351	364	—	715	(669)	(46)	—	—
Physical forward contracts	—		10	—	10	—	—	—	10
Interest-rate derivatives	—		3	—	3	—	—	—	3
Floating-rate debt	—		1,940	—	1,940	N/A	N/A	—	1,940
Fixed-rate debt, excluding finance leases	—		15,597	—	15,597	N/A	N/A	(1,927)	13,670
	$	351	17,914	—	18,265	(669)	(46)	(1,927)	15,623

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Pension and Postretirement Plans (Tables)

3 Months Ended

Mar. 31, 2021

Retirement Benefits [Abstract]

Schedule of Components of Net Periodic Benefit Cost

The components of net periodic benefit cost for the three months ended March 31, 2021 and 2020, were as follows:

	Millions of Dollars
	Pension Benefits					Other Benefits
	2021			2020		2021	2020
	U.S.		Int’l.	U.S.	Int’l.
Components of Net Periodic Benefit Cost
Three Months Ended March 31
Service cost	$	37	9	33	7	1	1
Interest cost	20		5	25	6	1	2
Expected return on plan assets	(41)		(15)	(41)	(13)	—	—
Amortization of prior service credit	—		—	—	—	(1)	(1)
Recognized net actuarial loss	15		6	14	4	—	—
Net periodic benefit cost*	$	31	5	31	4	1	2
* Included in the “Operating expenses” and “Selling, general and administrative expenses” line items on our consolidated statement of operations.

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Accumulated Other Comprehensive Loss (Tables)

3 Months Ended

Mar. 31, 2021

Equity [Abstract]

Schedule of Changes in and Reclassifications Out of Accumulated Other Comprehensive Loss by Component

Changes in the balances of each component of accumulated other comprehensive loss were as follows:

	Millions of Dollars
	Defined Benefit Plans		Foreign Currency Translation	Hedging	Accumulated Other Comprehensive Loss
December 31, 2020	$	(809)	25	(5)	(789)
Other comprehensive income (loss) before reclassifications	5		(15)	—	(10)
Amounts reclassified from accumulated other comprehensive loss
Defined benefit plans*
Amortization of net actuarial loss and prior service credit	17		—	—	17
Foreign currency translation	—		—	—	—
Hedging	—		—	2	2
Net current period other comprehensive income (loss)	22		(15)	2	9
March 31, 2021	$	(787)	10	(3)	(780)
December 31, 2019	$	(656)	(131)	(1)	(788)
Other comprehensive income (loss) before reclassifications	1		(221)	(7)	(227)
Amounts reclassified from accumulated other comprehensive loss
Defined benefit plans*
Amortization of net actuarial loss and prior service credit	19		—	—	19
Foreign currency translation	—		—	—	—
Hedging	—		—	—	—
Net current period other comprehensive income (loss)	20		(221)	(7)	(208)
Other	—		5	—	5
March 31, 2020	$	(636)	(347)	(8)	(991)
* Included in the computation of net periodic benefit cost. See Note 14—Pension and Postretirement Plans, for additional information.

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Related Party Transactions (Tables)

3 Months Ended

Mar. 31, 2021

Related Party Transactions [Abstract]

Schedule of Significant Transactions with Related Parties

Significant transactions with related parties were:

	Millions of Dollars
	Three Months Ended March 31
	2021		2020
Operating revenues and other income (a)	$	770	534
Purchases (b)	2,357		2,126
Operating expenses and selling, general and administrative expenses (c)	68		51

(a)We sold NGL, other petrochemical feedstocks and solvents to Chevron Phillips Chemical Company LLC (CPChem), NGL and certain feedstocks to DCP Midstream, gas oil and hydrogen feedstocks to Excel Paralubes (Excel), and refined petroleum products to several of our equity affiliates in the Marketing and Specialties segment, including OnCue and CF United. We also sold certain feedstocks and intermediate products to WRB and acted as an agent for WRB in supplying crude oil and other feedstocks for a fee. In addition, we charged several of our equity affiliates, including CPChem, for the use of common facilities, such as steam generators, waste and water treaters and warehouse facilities.

(b)We purchased crude oil, refined petroleum products, NGL and solvents from WRB. We also purchased natural gas and NGL from DCP Midstream and CPChem, as well as other feedstocks from various equity affiliates, for use in our refinery and fractionation processes. In addition, we purchased base oils and fuel products from Excel for use in our specialty and refining businesses. We paid NGL fractionation fees to CPChem. We also paid fees to various pipeline equity affiliates for transporting crude oil, refined petroleum products and NGL.

(c)We paid consignment fees to CF United, and utility and processing fees to various equity affiliates.

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Segment Disclosures and Related Information (Tables)

3 Months Ended

Mar. 31, 2021

Segment Reporting [Abstract]

Schedule of Analysis of Results by Operating Segment

Analysis of Results by Operating Segment

	Millions of Dollars
	Three Months Ended March 31
	2021		2020
Sales and Other Operating Revenues*
Midstream
Total sales	$	2,384	1,538
Intersegment eliminations	(627)		(495)
Total Midstream	1,757		1,043
Chemicals	1		1
Refining
Total sales	15,053		13,781
Intersegment eliminations	(8,456)		(7,633)
Total Refining	6,597		6,148
Marketing and Specialties
Total sales	13,598		14,249
Intersegment eliminations	(333)		(570)
Total Marketing and Specialties	13,265		13,679
Corporate and Other	7		7
Consolidated sales and other operating revenues	$	21,627	20,878
* See Note 2—Sales and Other Operating Revenues, for further details on our disaggregated sales and other operating revenues.
Income (Loss) Before Income Taxes
Midstream	$	76	(702)
Chemicals	154		169
Refining	(1,040)		(2,261)
Marketing and Specialties	290		513
Corporate and Other	(251)		(197)
Consolidated loss before income taxes	$	(771)	(2,478)

Schedule of Reconciliation of Assets from Segment to Consolidated

	Millions of Dollars
	March 31 2021		December 31 2020
Total Assets
Midstream	$	15,296	15,596
Chemicals	6,133		6,183
Refining	21,893		20,404
Marketing and Specialties	7,962		7,180
Corporate and Other	4,212		5,358
Consolidated total assets	$	55,496	54,721

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Phillips 66 Partners LP (Tables)

3 Months Ended

Mar. 31, 2021

Limited Liability Company or Limited Partnership, Business Organization and Operations [Abstract]

Schedule of Variable Interest Entities

The most significant assets of Phillips 66 Partners that are available to settle only its obligations, along with its most significant liabilities for which its creditors do not have recourse to Phillips 66’s general credit, were:

	Millions of Dollars
	March 31 2021		December 31 2020
Equity investments*	$	3,029	3,244
Net properties, plants and equipment	3,646		3,639
Short-term debt	500		465
Long-term debt	3,444		3,444
* Included in the “Investments and long-term receivables” line item on the Phillips 66 consolidated balance sheet.

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Sales and Other Operating Revenues - Disaggregated (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Disaggregation of Revenue [Line Items]
Sales and other operating revenues	$ 21,627	$ 20,878
United States
Disaggregation of Revenue [Line Items]
Sales and other operating revenues	16,612	15,710
United Kingdom
Disaggregation of Revenue [Line Items]
Sales and other operating revenues	2,287	2,309
Germany
Disaggregation of Revenue [Line Items]
Sales and other operating revenues	817	858
Other foreign countries
Disaggregation of Revenue [Line Items]
Sales and other operating revenues	1,911	2,001
Refined petroleum products
Disaggregation of Revenue [Line Items]
Sales and other operating revenues	16,343	16,157
Crude oil resales
Disaggregation of Revenue [Line Items]
Sales and other operating revenues	3,189	2,877
Natural gas liquids (NGL)
Disaggregation of Revenue [Line Items]
Sales and other operating revenues	1,774	979
Services and other
Disaggregation of Revenue [Line Items]
Sales and other operating revenues	$ 321	$ 865

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Sales and Other Operating Revenues - Narrative (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Dec. 31, 2020
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Accounts receivable	$ 5,375	$ 3,911
Receivables from contracts with customers	$ 414	$ 404
Minimum
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Customer contracts, term	5 years
Maximum
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Customer contracts, term	15 years

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Credit Losses (Details) - USD ($) $ in Millions	Mar. 31, 2021	Dec. 31, 2020
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Accounts and notes receivable	$ 8,165	$ 6,522
Allowance for doubtful accounts	$ 51	$ 37
Accounts and notes receivable, percent outstanding less than 60 days (more than)	95.00%

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Inventories - Schedule of Inventories (Details) - USD ($) $ in Millions	Mar. 31, 2021	Dec. 31, 2020
Inventory Disclosure [Abstract]
Crude oil and petroleum products	$ 3,915	$ 3,536
Materials and supplies	358	357
Inventories	$ 4,273	$ 3,893

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Inventories - Narrative (Details) - USD ($) $ in Millions	Mar. 31, 2021	Dec. 31, 2020
Inventory Disclosure [Abstract]
LIFO inventory amount	$ 3,740	$ 3,368
Estimated excess of current replacement cost over LIFO cost of inventories	$ 4,200	$ 2,700

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Investments, Loans and Long-Term Receivables - Dakota Access, LLC and Energy Transfer Crude Oil, Company, LLC (Details) - USD ($)	12 Months Ended
	Dec. 31, 2021	Mar. 31, 2021	Dec. 31, 2020	Mar. 31, 2019
Dakota Access, LLC | Forecast
Schedule of Equity Method Investments [Line Items]
Scheduled interest payments annually	$ 25,000,000
Phillips 66 Partners LP | Variable Interest Entity, Primary Beneficiary
Schedule of Equity Method Investments [Line Items]
Equity investments		$ 3,029,000,000	$ 3,244,000,000
Phillips 66 Partners LP | Variable Interest Entity, Primary Beneficiary | Dakota Access and ETCO
Schedule of Equity Method Investments [Line Items]
Maximum exposure, undiscounted		631,000,000
Equity investments		$ 575,000,000
Senior Notes | Dakota Access, LLC
Schedule of Equity Method Investments [Line Items]
Debt issued and guaranteed				$ 2,500,000,000

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Investments, Loans and Long-Term Receivables - CF United LLC (Details) - CF United LLC $ in Millions	Mar. 31, 2021 USD ($)
Schedule of Equity Method Investments [Line Items]
Voting interest acquired	50.00%
Economic interest acquired	48.00%
Equity investments	$ 334

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Investments, Loans and Long-Term Receivables - OnCue Holdings, LLC (Details) - OnCue Holdings, LLC $ in Millions	Mar. 31, 2021 USD ($)
Schedule of Equity Method Investments [Line Items]
Percentage of ownership interest	50.00%
Maximum loss exposure	$ 178
Equity investments	99
Maximum potential amount of future payments under the guarantees	$ 79

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Investments, Loans and Long-Term Receivables - Liberty Pipeline LLC (Liberty) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Schedule of Equity Method Investments [Line Items]
Impairments	$ 198	$ 3,006
Variable Interest Entity, Primary Beneficiary | Phillips 66 Partners LP
Schedule of Equity Method Investments [Line Items]
Equity investments	$ 3,029		$ 3,244
Liberty Pipeline LLC | Variable Interest Entity, Primary Beneficiary | Phillips 66 Partners LP
Schedule of Equity Method Investments [Line Items]
Percentage of ownership interest	50.00%
Impairments	$ 198
Equity investments	$ 46

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Investments, Loans and Long-Term Receivables - Related Party Loan (Details) - WRB Refining LP $ in Millions	Mar. 31, 2021 USD ($)
Schedule of Equity Method Investments [Line Items]
Percentage of ownership interest	50.00%
Outstanding related party loan balance	$ 434

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Properties, Plants and Equipment (Details) - USD ($) $ in Millions	Mar. 31, 2021	Dec. 31, 2020
Property, Plant and Equipment [Line Items]
Gross PP&E	$ 40,504	$ 40,223
Accum. D&A	16,827	16,507
Net PP&E	23,677	23,716
Corporate and Other
Property, Plant and Equipment [Line Items]
Gross PP&E	1,455	1,448
Accum. D&A	686	666
Net PP&E	769	782
Midstream
Property, Plant and Equipment [Line Items]
Gross PP&E	12,184	12,313
Accum. D&A	2,796	2,815
Net PP&E	9,388	9,498
Chemicals
Property, Plant and Equipment [Line Items]
Gross PP&E	0	0
Accum. D&A	0	0
Net PP&E	0	0
Refining
Property, Plant and Equipment [Line Items]
Gross PP&E	25,095	24,647
Accum. D&A	12,351	12,019
Net PP&E	12,744	12,628
Marketing and Specialties
Property, Plant and Equipment [Line Items]
Gross PP&E	1,770	1,815
Accum. D&A	994	1,007
Net PP&E	$ 776	$ 808

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Impairments - Schedule of Impairments (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Goodwill [Line Items]
Impairments	$ 198	$ 3,006
Midstream
Goodwill [Line Items]
Impairments	198
Midstream | Operating Segments
Goodwill [Line Items]
Impairments	198	1,161
Refining | Operating Segments
Goodwill [Line Items]
Impairments	$ 0	$ 1,845

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Impairments - Narrative (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Goodwill [Line Items]
Impairments	$ 198	$ 3,006
Refining
Goodwill [Line Items]
Goodwill		1,845
Liberty Pipeline LLC | Variable Interest Entity, Primary Beneficiary | Phillips 66 Partners LP
Goodwill [Line Items]
Impairments	$ 198
DCP Midstream
Goodwill [Line Items]
Equity investments		$ 1,161
DCP Midstream | DCP Partners
Goodwill [Line Items]
Equity method investment, decline in market value, percent		85.00%

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Earnings (Loss) Per Share - Summary of Earnings Per Share Calculation (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Basic
Net loss attributable to Phillips 66	$ (654)	$ (2,496)
Income allocated to participating securities	(2)	(1)
Net loss available to common stockholders	$ (656)	$ (2,497)
Weighted-average common shares outstanding (in shares)	437,369	439,014
Effect of share-based compensation (in shares)	2,135	2,331
Weighted-average commons shares outstanding - EPS (in shares)	439,504	441,345
Loss Per Share of Common Stock (in usd per share)	$ (1.49)	$ (5.66)
Diluted
Net loss attributable to Phillips 66	$ (654)	$ (2,496)
Income allocated to participating securities	(2)	(1)
Net loss available to common stockholders	$ (656)	$ (2,497)
Weighted-average common shares outstanding (in shares)	439,504	441,345
Effect of share-based compensation (in shares)	0	0
Weighted-average commons shares outstanding - EPS (in shares)	439,504	441,345
Earnings (Loss) Per Share of Common Stock (in usd per share)	$ (1.49)	$ (5.66)

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Debt (Details) - USD ($)			1 Months Ended
	Apr. 06, 2021	Mar. 19, 2020	Feb. 28, 2021	Nov. 30, 2020	Mar. 31, 2021	Apr. 06, 2020
Line of Credit | Term Loan
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity		$ 1,000,000,000				$ 2,000,000,000
Repayments of debt				$ 500,000,000
Delayed term		364 days
Proceeds from borrowings		$ 1,000,000,000
Line of Credit | Long-term debt
Debt Instrument [Line Items]
Amount borrowed				$ 500,000,000
Loans Payable | Floating Rate Notes Due April 2021
Debt Instrument [Line Items]
Repayments of debt			$ 500,000,000
Phillips 66 Partners LP | Variable Interest Entity, Primary Beneficiary | Line of Credit | Revolving Credit Facility
Debt Instrument [Line Items]
Amount borrowed					$ 450,000,000
Line of credit facility, maximum borrowing capacity					750,000,000
Phillips 66 Partners LP | Variable Interest Entity, Primary Beneficiary | Line of Credit | Letter of Credit
Debt Instrument [Line Items]
Amount borrowed					$ 1,000,000
Phillips 66 Partners LP | Variable Interest Entity, Primary Beneficiary | Line of Credit | Subsequent Event | Term Loan
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity	$ 450,000,000
Phillips 66 Partners LP | Variable Interest Entity, Primary Beneficiary | Line of Credit | Subsequent Event | Term Loan | Eurodollar
Debt Instrument [Line Items]
Basis spread on variable rate	0.875%
Phillips 66 Partners LP | Variable Interest Entity, Primary Beneficiary | Line of Credit | Subsequent Event | Term Loan | Reference Rate
Debt Instrument [Line Items]
Basis spread on variable rate	0.875%

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Guarantees (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Dec. 31, 2020
Guarantor Obligations [Line Items]
Environmental accruals included in recorded carrying amount	$ 437	$ 427
Other Guarantees | Other joint ventures and entities
Guarantor Obligations [Line Items]
Maximum potential amount of future payments under the guarantees	$ 197
Joint venture debt obligations, period (up to)	7 years
Indemnifications
Guarantor Obligations [Line Items]
Carrying amount of indemnifications	$ 145	145
Indemnifications | Asset Retirement Obligations And Accrued Environmental Cost
Guarantor Obligations [Line Items]
Environmental accruals included in recorded carrying amount	103	$ 104
Facilities | Residual Value Guarantees
Guarantor Obligations [Line Items]
Maximum potential amount of future payments under the guarantees	514
Railcar and Airplane | Residual Value Guarantees
Guarantor Obligations [Line Items]
Maximum potential amount of future payments under the guarantees	$ 371
Lessee operating lease remaining lease term (up to)	9 years

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Contingencies and Commitments (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Dec. 31, 2020
Debt Instrument [Line Items]
Total environmental accrual	$ 437	$ 427
Performance Guarantee
Debt Instrument [Line Items]
Letters of credit and bank guarantees	$ 791
Reserve for Environmental Costs
Debt Instrument [Line Items]
Expected years to incur a substantial amount of expenditures	30 years

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Derivatives and Financial Instruments - Summary of Commodity Balance Sheet (Details) - USD ($) $ in Millions	Mar. 31, 2021	Dec. 31, 2020
Assets
Liabilities	$ (1,048)	$ (669)
Effect of Collateral Netting	(8)	0
Liabilities
Assets	1,048	669
Effect of Collateral Netting	78	46
Total
Effect of Collateral Netting	78	46
Not Designated as Hedging Instrument | Commodity
Liabilities
Effect of Collateral Netting	70	46
Total
Assets	1,106	683
Liabilities	(1,140)	(725)
Effect of Collateral Netting	70	46
Net Carrying Value Presented on the Balance Sheet	36	4
Not Designated as Hedging Instrument | Commodity | Prepaid expenses and other current assets
Assets
Assets	652	13
Liabilities	(595)	0
Effect of Collateral Netting	(8)	0
Net Carrying Value Presented on the Balance Sheet	49	13
Not Designated as Hedging Instrument | Commodity | Other assets
Assets
Assets	17	5
Liabilities	(16)	(4)
Effect of Collateral Netting	0	0
Net Carrying Value Presented on the Balance Sheet	1	1
Not Designated as Hedging Instrument | Commodity | Other accruals
Liabilities
Assets	437	665
Liabilities	(529)	(721)
Effect of Collateral Netting	78	46
Net Carrying Value Presented on the Balance Sheet	(14)	(10)
Total
Effect of Collateral Netting	$ 78	$ 46

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Derivatives and Financial Instruments - Summary of Gains/(Losses) From Commodity Derivatives (Details) - Commodity Derivative Assets - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Derivative Instruments, Gain (Loss) [Line Items]
Net gain (loss) from commodity derivative activity	$ (257)	$ 1,123
Sales and other operating revenues
Derivative Instruments, Gain (Loss) [Line Items]
Net gain (loss) from commodity derivative activity	(123)	679
Other income
Derivative Instruments, Gain (Loss) [Line Items]
Net gain (loss) from commodity derivative activity	1	3
Purchased crude oil and products
Derivative Instruments, Gain (Loss) [Line Items]
Net gain (loss) from commodity derivative activity	$ (135)	$ 441

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Derivatives and Financial Instruments - Narrative (Details) - USD ($) $ in Millions	Mar. 31, 2021	Dec. 31, 2020
Derivative [Line Items]
Percentage of derivative contract volume expiring within twelve months (at least)	95.00%	95.00%
Cash Flow Hedging | Interest rate derivatives
Derivative [Line Items]
Derivative, notional amount	$ 650

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Derivatives and Financial Instruments - Summary of Outstanding Commodity Derivative Contracts (Details) - bbl bbl in Millions	Mar. 31, 2021	Dec. 31, 2020
Short | Commodity Derivative Assets
Derivative [Line Items]
Crude oil, refined petroleum products and NGL (in barrels)	(25)	(13)

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Fair Value Measurements - Summary of Fair Value of Derivative Assets and Liabilities and Effect of Counterparty Netting (Details) - USD ($) $ in Millions	Mar. 31, 2021	Dec. 31, 2020
Assets
Total Fair Value of Gross Assets	$ 1,256	$ 826
Effect of Counterparty Netting	(1,048)	(669)
Effect of Collateral Netting	(8)	0
Difference in Carrying Value and Fair Value	0	0
Net Carrying Value Presented on the Balance Sheet	200	157
Liabilities
Total Fair Value Gross Liabilities	17,680	18,265
Effect of Counterparty Netting	(1,048)	(669)
Effect of Collateral Netting	(78)	(46)
Difference in Carrying Value and Fair Value	(1,391)	(1,927)
Net Carrying Value Presented on the Balance Sheet	15,163	15,623
Level 1
Assets
Total Fair Value of Gross Assets	896	457
Liabilities
Total Fair Value Gross Liabilities	794	351
Level 2
Assets
Total Fair Value of Gross Assets	360	369
Liabilities
Total Fair Value Gross Liabilities	16,886	17,914
Level 3
Assets
Total Fair Value of Gross Assets	0	0
Liabilities
Total Fair Value Gross Liabilities	0	0
Commodity Derivative Assets | Exchange-cleared instruments
Assets
Commodity Derivative Assets	1,083	670
Effect of Counterparty Netting	(1,048)	(669)
Effect of Collateral Netting	(8)	0
Difference in Carrying Value and Fair Value	0	0
Net Carrying Value Presented on the Balance Sheet	27	1
Liabilities
Commodity Derivative Liabilities	1,126	715
Effect of Counterparty Netting	(1,048)	(669)
Effect of Collateral Netting	(78)	(46)
Difference in Carrying Value and Fair Value	0	0
Net Carrying Value Presented on the Balance Sheet	0	0
Commodity Derivative Assets | OTC instruments
Liabilities
Commodity Derivative Liabilities	1
Effect of Counterparty Netting	0
Effect of Collateral Netting	0
Difference in Carrying Value and Fair Value	0
Net Carrying Value Presented on the Balance Sheet	1
Commodity Derivative Assets | Physical forward contracts
Assets
Commodity Derivative Assets	23	13
Effect of Counterparty Netting	0	0
Effect of Collateral Netting	0	0
Difference in Carrying Value and Fair Value	0	0
Net Carrying Value Presented on the Balance Sheet	23	13
Liabilities
Commodity Derivative Liabilities	13	10
Effect of Counterparty Netting	0	0
Effect of Collateral Netting	0	0
Difference in Carrying Value and Fair Value	0	0
Net Carrying Value Presented on the Balance Sheet	13	10
Commodity Derivative Assets | Level 1 | Exchange-cleared instruments
Assets
Commodity Derivative Assets	746	314
Liabilities
Commodity Derivative Liabilities	794	351
Commodity Derivative Assets | Level 1 | OTC instruments
Liabilities
Commodity Derivative Liabilities	0
Commodity Derivative Assets | Level 1 | Physical forward contracts
Assets
Commodity Derivative Assets	0	0
Liabilities
Commodity Derivative Liabilities	0	0
Commodity Derivative Assets | Level 2 | Exchange-cleared instruments
Assets
Commodity Derivative Assets	337	356
Liabilities
Commodity Derivative Liabilities	332	364
Commodity Derivative Assets | Level 2 | OTC instruments
Liabilities
Commodity Derivative Liabilities	1
Commodity Derivative Assets | Level 2 | Physical forward contracts
Assets
Commodity Derivative Assets	23	13
Liabilities
Commodity Derivative Liabilities	13	10
Commodity Derivative Assets | Level 3 | Exchange-cleared instruments
Assets
Commodity Derivative Assets	0	0
Liabilities
Commodity Derivative Liabilities	0	0
Commodity Derivative Assets | Level 3 | OTC instruments
Liabilities
Commodity Derivative Liabilities	0
Commodity Derivative Assets | Level 3 | Physical forward contracts
Assets
Commodity Derivative Assets	0	0
Liabilities
Commodity Derivative Liabilities	0	0
Interest rate derivatives
Liabilities
Commodity Derivative Liabilities		3
Interest-rate derivatives	1
Effect of Counterparty Netting	0	0
Effect of Collateral Netting	0	0
Difference in Carrying Value and Fair Value	0	0
Net Carrying Value Presented on the Balance Sheet	1	3
Interest rate derivatives | Level 1
Liabilities
Commodity Derivative Liabilities		0
Interest-rate derivatives	0
Interest rate derivatives | Level 2
Liabilities
Commodity Derivative Liabilities		3
Interest-rate derivatives	1
Interest rate derivatives | Level 3
Liabilities
Commodity Derivative Liabilities		0
Interest-rate derivatives	0
Rabbi trust assets
Assets
Rabbi trust assets	150	143
Difference in Carrying Value and Fair Value	0	0
Rabbi trust assets | Level 1
Assets
Rabbi trust assets	150	143
Rabbi trust assets | Level 2
Assets
Rabbi trust assets	0	0
Rabbi trust assets | Level 3
Assets
Rabbi trust assets	0	0
Floating-rate debt
Liabilities
Debt	1,475	1,940
Difference in Carrying Value and Fair Value	0	0
Floating-rate debt | Net Carrying Value Presented on the Balance Sheet
Liabilities
Debt	1,475	1,940
Floating-rate debt | Level 1
Liabilities
Debt	0	0
Floating-rate debt | Level 2
Liabilities
Debt	1,475	1,940
Floating-rate debt | Level 3
Liabilities
Debt	0	0
Fixed-rate debt, excluding finance leases
Liabilities
Debt	15,064	15,597
Difference in Carrying Value and Fair Value	(1,391)	(1,927)
Fixed-rate debt, excluding finance leases | Net Carrying Value Presented on the Balance Sheet
Liabilities
Debt	13,673	13,670
Fixed-rate debt, excluding finance leases | Level 1
Liabilities
Debt	0	0
Fixed-rate debt, excluding finance leases | Level 2
Liabilities
Debt	15,064	15,597
Fixed-rate debt, excluding finance leases | Level 3
Liabilities
Debt	$ 0	$ 0

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Fair Value Measurements - Narrative (Details) - USD ($)	Mar. 31, 2021	Dec. 31, 2020	Mar. 31, 2020
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Goodwill	$ 1,425,000,000	$ 1,425,000,000
Refining
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Goodwill			$ 0

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Pension and Postretirement Plans - Summary of Components of Net Periodic Benefit Cost (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Other Benefits
Components of Net Periodic Benefit Cost
Service cost	$ 1	$ 1
Interest cost	1	2
Expected return on plan assets	0	0
Amortization of prior service credit	(1)	(1)
Recognized net actuarial loss	0	0
Net periodic benefit cost	1	2
U.S. | Pension Benefits
Components of Net Periodic Benefit Cost
Service cost	37	33
Interest cost	20	25
Expected return on plan assets	(41)	(41)
Amortization of prior service credit	0	0
Recognized net actuarial loss	15	14
Net periodic benefit cost	31	31
Int’l. | Pension Benefits
Components of Net Periodic Benefit Cost
Service cost	9	7
Interest cost	5	6
Expected return on plan assets	(15)	(13)
Amortization of prior service credit	0	0
Recognized net actuarial loss	6	4
Net periodic benefit cost	$ 5	$ 4

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Pension and Postretirement Plans - Narrative (Details) $ in Millions	3 Months Ended
	Mar. 31, 2021 USD ($)
United States
Defined Benefit Plan Disclosure [Line Items]
Company contributions to plans	$ 5
Additional contributions expected to be made during remainder of fiscal year	35
Int’l. | Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Company contributions to plans	7
Additional contributions expected to be made during remainder of fiscal year	$ 23

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Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Amounts reclassified from accumulated other comprehensive income (loss)
Beginning Balance	$ 21,523	$ 27,169
Other comprehensive income (loss) before reclassifications	(10)
Other Comprehensive Income (Loss), Net of Income Taxes	9	(208)
Other		5
Ending Balance	20,457	23,639
Defined Benefit Plans
Amounts reclassified from accumulated other comprehensive income (loss)
Beginning Balance	(809)	(656)
Other comprehensive income (loss) before reclassifications	5	1
Amounts reclassified from accumulated other comprehensive loss	17	19
Other Comprehensive Income (Loss), Net of Income Taxes	22	20
Other		0
Ending Balance	(787)	(636)
Foreign Currency Translation
Amounts reclassified from accumulated other comprehensive income (loss)
Beginning Balance	25	(131)
Other comprehensive income (loss) before reclassifications	(15)	(221)
Amounts reclassified from accumulated other comprehensive loss	0	0
Other Comprehensive Income (Loss), Net of Income Taxes	(15)	(221)
Other		5
Ending Balance	10	(347)
Hedging
Amounts reclassified from accumulated other comprehensive income (loss)
Beginning Balance	(5)	(1)
Other comprehensive income (loss) before reclassifications	0	(7)
Amounts reclassified from accumulated other comprehensive loss	2	0
Other Comprehensive Income (Loss), Net of Income Taxes	2	(7)
Other		0
Ending Balance	(3)	(8)
Accumulated Other Comprehensive Loss
Amounts reclassified from accumulated other comprehensive income (loss)
Beginning Balance	(789)	(788)
Other comprehensive income (loss) before reclassifications		(227)
Other Comprehensive Income (Loss), Net of Income Taxes	9	(208)
Ending Balance	$ (780)	$ (991)

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Related Party Transactions (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Related Party Transactions [Abstract]
Operating revenues and other income	$ 770	$ 534
Purchases	2,357	2,126
Operating expenses and selling, general and administrative expenses	$ 68	$ 51

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Segment Disclosures and Related Information - Narrative (Details)	3 Months Ended
	Mar. 31, 2021 refinery
Midstream | DCP Midstream
Segment Reporting Information [Line Items]
Percentage of ownership interest	50.00%
Chemicals | CPChem
Segment Reporting Information [Line Items]
Percentage of ownership interest	50.00%
Refining | Mainly United States And Europe
Segment Reporting Information [Line Items]
Number of refineries	13

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Segment Disclosures and Related Information - Summary of Sales and Other Operating Revenues, Net Income (Loss) Attributable to Phillips 66 and Total Assets by Operating Segment (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Segment Reporting Information [Line Items]
Sales and other operating revenues	$ 21,627	$ 20,878
Consolidated loss before income taxes	(771)	(2,478)
Total Assets	55,496		$ 54,721
Midstream
Segment Reporting Information [Line Items]
Sales and other operating revenues	1,757	1,043
Refining
Segment Reporting Information [Line Items]
Sales and other operating revenues	6,597	6,148
Marketing and Specialties
Segment Reporting Information [Line Items]
Sales and other operating revenues	13,265	13,679
Operating Segments | Midstream
Segment Reporting Information [Line Items]
Sales and other operating revenues	2,384	1,538
Consolidated loss before income taxes	76	(702)
Total Assets	15,296		15,596
Operating Segments | Chemicals
Segment Reporting Information [Line Items]
Sales and other operating revenues	1	1
Consolidated loss before income taxes	154	169
Total Assets	6,133		6,183
Operating Segments | Refining
Segment Reporting Information [Line Items]
Sales and other operating revenues	15,053	13,781
Consolidated loss before income taxes	(1,040)	(2,261)
Total Assets	21,893		20,404
Operating Segments | Marketing and Specialties
Segment Reporting Information [Line Items]
Sales and other operating revenues	13,598	14,249
Consolidated loss before income taxes	290	513
Total Assets	7,962		7,180
Intersegment eliminations | Midstream
Segment Reporting Information [Line Items]
Sales and other operating revenues	(627)	(495)
Intersegment eliminations | Refining
Segment Reporting Information [Line Items]
Sales and other operating revenues	(8,456)	(7,633)
Intersegment eliminations | Marketing and Specialties
Segment Reporting Information [Line Items]
Sales and other operating revenues	(333)	(570)
Corporate and Other
Segment Reporting Information [Line Items]
Sales and other operating revenues	7	7
Consolidated loss before income taxes	(251)	$ (197)
Total Assets	$ 4,212		$ 5,358

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Income Taxes (Details) - USD ($) $ in Billions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Income Tax Contingency [Line Items]
Effective tax rate, percent	17.00%	2.00%
Accounts and notes receivable
Income Tax Contingency [Line Items]
Income tax receivable	$ 1.5

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Phillips 66 Partners LP - Narrative (Details) - Phillips 66 Partners LP shares in Millions	Mar. 31, 2021 shares
Subsidiary or Equity Method Investee [Line Items]
Limited partner interest in Phillips 66 Partners owned by public, percentage	26.00%
Variable Interest Entity, Primary Beneficiary
Subsidiary or Equity Method Investee [Line Items]
Limited partnership interest in Phillips 66 Partners, percentage	74.00%
Common Units | Variable Interest Entity, Primary Beneficiary
Subsidiary or Equity Method Investee [Line Items]
Ownership interest (in shares)	170.0
Preferred Units | Variable Interest Entity, Primary Beneficiary
Subsidiary or Equity Method Investee [Line Items]
Ownership interest (in shares)	13.8

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Phillips 66 Partners LP - Schedule of Assets and Liabilities (Details) - Phillips 66 Partners LP - Variable Interest Entity, Primary Beneficiary - USD ($) $ in Millions	Mar. 31, 2021	Dec. 31, 2020
Variable Interest Entity [Line Items]
Equity investments	$ 3,029	$ 3,244
Net properties, plants and equipment	3,646	3,639
Short-term debt	500	465
Long-term debt	$ 3,444	$ 3,444