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 September 30, 2019

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, 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 444,357,576 shares of common stock, $0.01 par value, outstanding as of September 30, 2019.

PHILLIPS 66

TABLE OF CONTENTS

	Page
Part I – Financial Information
Item 1. Financial Statements
Consolidated Statement of Income	1
Consolidated Statement of Comprehensive Income	2
Consolidated Balance Sheet	3
Consolidated Statement of Cash Flows	4
Consolidated Statement of Changes in Equity	5
Notes to Consolidated Financial Statements	7
Item 2. Management’s Discussion and Analysis of Financial Condition and      Results of Operations	39
Item 3. Quantitative and Qualitative Disclosures About Market Risk	64
Item 4. Controls and Procedures	64
Part II – Other Information
Item 1. Legal Proceedings	65
Item 1A. Risk Factors	65
Item 2. Unregistered Sales of Equity Securities and Use of Proceeds	66
Item 6. Exhibits	67
Signatures	68

PART I. FINANCIAL INFORMATION

Item 1. FINANCIAL STATEMENTS

Consolidated Statement of Income Phillips 66

	Millions of Dollars
	Three Months Ended September 30				Nine Months Ended September 30
	2019			2018	2019	2018
Revenues and Other Income
Sales and other operating revenues	$	27,218		29,788	78,168	82,363
Equity in earnings of affiliates	499			779	1,663	1,946
Net gain on dispositions	18			1	19	18
Other income	36			24	97	47
Total Revenues and Other Income	27,771			30,592	79,947	84,374
Costs and Expenses
Purchased crude oil and products	23,806			26,385	69,415	73,270
Operating expenses	1,206			1,206	3,678	3,595
Selling, general and administrative expenses	416			440	1,190	1,258
Depreciation and amortization	336			346	1,001	1,019
Impairments	853			1	856	7
Taxes other than income taxes	105			109	330	328
Accretion on discounted liabilities	6			5	17	17
Interest and debt expense	109			125	343	383
Foreign currency transaction (gains) losses	(9		)	—	5	(30	)
Total Costs and Expenses	26,828			28,617	76,835	79,847
Income before income taxes	943			1,975	3,112	4,527
Income tax expense	150			407	545	970
Net Income	793			1,568	2,567	3,557
Less: net income attributable to noncontrolling interests	81			76	227	202
Net Income Attributable to Phillips 66	$	712		1,492	2,340	3,355
Net Income Attributable to Phillips 66 Per Share of Common Stock (dollars)
Basic	$	1.58		3.20	5.15	7.07
Diluted	1.58			3.18	5.13	7.03
Weighted-Average Common Shares Outstanding (thousands)
Basic	449,005			466,109	453,398	473,760
Diluted	451,001			469,440	455,810	477,220
See Notes to Consolidated Financial Statements.

1

Consolidated Statement of Comprehensive Income Phillips 66

	Millions of Dollars
	Three Months Ended September 30					Nine Months Ended September 30
	2019			2018		2019		2018
Net Income	$	793		1,568		2,567		3,557
Other comprehensive income (loss)
Defined benefit plans
Amortization to income of net actuarial loss, prior service credit and settlements	17			68		51		111
Plans sponsored by equity affiliates	2			4		7		13
Income taxes on defined benefit plans	(4		)	(18	)	(13	)	(30	)
Defined benefit plans, net of income taxes	15			54		45		94
Foreign currency translation adjustments	(119		)	(15	)	(124	)	(125	)
Income taxes on foreign currency translation adjustments	1			1		—		2
Foreign currency translation adjustments, net of income taxes	(118		)	(14	)	(124	)	(123	)
Cash flow hedges	(2		)	2		(13	)	10
Income taxes on hedging activities	1			(1	)	2		(3	)
Hedging activities, net of income taxes	(1		)	1		(11	)	7
Other Comprehensive Income (Loss), Net of Income Taxes	(104		)	41		(90	)	(22	)
Comprehensive Income	689			1,609		2,477		3,535
Less: comprehensive income attributable to noncontrolling interests	81			76		227		202
Comprehensive Income Attributable to Phillips 66	$	608		1,533		2,250		3,333

See Notes to Consolidated Financial Statements.

2

Consolidated Balance Sheet Phillips 66

	Millions of Dollars
	September 30 2019			December 31 2018
Assets
Cash and cash equivalents	$	2,268		3,019
Accounts and notes receivable (net of allowances of $41 million in 2019 and $22 million in 2018)	6,097			5,414
Accounts and notes receivable—related parties	989			759
Inventories	5,521			3,543
Prepaid expenses and other current assets	742			474
Total Current Assets	15,617			13,209
Investments and long-term receivables	14,147			14,421
Net properties, plants and equipment	22,954			22,018
Goodwill	3,270			3,270
Intangibles	872			869
Other assets	1,881			515
Total Assets	$	58,741		54,302
Liabilities
Accounts payable	$	7,738		6,113
Accounts payable—related parties	635			473
Short-term debt	842			67
Accrued income and other taxes	1,128			1,116
Employee benefit obligations	624			724
Other accruals	1,116			442
Total Current Liabilities	12,083			8,935
Long-term debt	11,083			11,093
Asset retirement obligations and accrued environmental costs	617			624
Deferred income taxes	5,503			5,275
Employee benefit obligations	905			867
Other liabilities and deferred credits	1,458			355
Total Liabilities	31,649			27,149
Equity
Common stock (2,500,000,000 shares authorized at $0.01 par value)      Issued (2019—647,050,977 shares; 2018—645,691,761 shares)
Par value	6			6
Capital in excess of par	20,253			19,873
Treasury stock (at cost: 2019—202,693,401 shares; 2018—189,526,331 shares)	(16,261		)	(15,023	)
Retained earnings	21,730			20,489
Accumulated other comprehensive loss	(871		)	(692	)
Total Stockholders’ Equity	24,857			24,653
Noncontrolling interests	2,235			2,500
Total Equity	27,092			27,153
Total Liabilities and Equity	$	58,741		54,302

See Notes to Consolidated Financial Statements.

3

Consolidated Statement of Cash Flows Phillips 66

	Millions of Dollars
	Nine Months Ended September 30
	2019			2018
Cash Flows From Operating Activities
Net income	$	2,567		3,557
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation and amortization	1,001			1,019
Impairments	856			7
Accretion on discounted liabilities	17			17
Deferred income taxes	115			229
Undistributed equity earnings	(25		)	111
Net gain on dispositions	(19		)	(18	)
Other	(97		)	118
Working capital adjustments
Accounts and notes receivable	(909		)	(478	)
Inventories	(2,004		)	(2,178	)
Prepaid expenses and other current assets	(269		)	(509	)
Accounts payable	1,778			1,280
Taxes and other accruals	103			279
Net Cash Provided by Operating Activities	3,114			3,434
Cash Flows From Investing Activities
Capital expenditures and investments	(2,595		)	(1,645	)
Proceeds from asset dispositions*	139			39
Advances/loans—related parties	(95		)	(1	)
Collection of advances/loans—related parties	95			—
Other	24			67
Net Cash Used in Investing Activities	(2,432		)	(1,540	)
Cash Flows From Financing Activities
Issuance of debt	1,758			1,594
Repayment of debt	(1,004		)	(374	)
Issuance of common stock	15			39
Repurchase of common stock	(1,238		)	(4,148	)
Dividends paid on common stock	(1,172		)	(1,069	)
Distributions to noncontrolling interests	(176		)	(146	)
Net proceeds from issuance of Phillips 66 Partners LP common units	133			114
Other	282			(79	)
Net Cash Used in Financing Activities	(1,402		)	(4,069	)
Effect of Exchange Rate Changes on Cash and Cash Equivalents	(31		)	(20	)
Net Change in Cash and Cash Equivalents	(751		)	(2,195	)
Cash and cash equivalents at beginning of period	3,019			3,119
Cash and Cash Equivalents at End of Period	$	2,268		924

* Includes return of investments in equity affiliates.

See Notes to Consolidated Financial Statements.

4

Consolidated Statement of Changes in Equity Phillips 66

	Millions of Dollars
	Three Months Ended September 30
	Attributable to Phillips 66
	Common Stock
	Par Value		Capital in Excess of Par	Treasury Stock		Retained Earnings		Accum. Other Comprehensive Loss		Noncontrolling Interests		Total
June 30, 2019	$	6	19,912	(15,822	)	21,423		(767	)	2,554		27,306
Net income	—		—	—		712		—		81		793
Other comprehensive loss	—		—	—		—		(104	)	—		(104	)
Dividends paid on common stock ($0.90 per share)	—		—	—		(402	)	—		—		(402	)
Repurchase of common stock	—		—	(439	)	—		—		—		(439	)
Benefit plan activity	—		22	—		(3	)	—		—		19
Issuance of Phillips 66 Partners LP common units	—		44	—		—		—		32		76
Impacts from Phillips 66 Partners GP/IDR restructuring transaction	—		275	—		—		—		(373	)	(98	)
Distributions to noncontrolling interests	—		—	—		—		—		(59	)	(59	)
September 30, 2019	$	6	20,253	(16,261	)	21,730		(871	)	2,235		27,092
June 30, 2018	$	6	19,831	(14,121	)	17,500		(680	)	2,424		24,960
Net income	—		—	—		1,492		—		76		1,568
Other comprehensive income	—		—	—		—		41		—		41
Dividends paid on common stock ($0.80 per share)	—		—	—		(370	)	—		—		(370	)
Repurchase of common stock	—		—	(405	)	—		—		—		(405	)
Benefit plan activity	—		13	—		(4	)	—		—		9
Issuance of Phillips 66 Partners LP common units	—		16	—		—		—		26		42
Distributions to noncontrolling interests	—		—	—		—		—		(50	)	(50	)
September 30, 2018	$	6	19,860	(14,526	)	18,618		(639	)	2,476		25,795

	Shares in Thousands
	Three Months Ended September 30
	Common Stock Issued	Treasury Stock
June 30, 2019	646,828	198,287
Repurchase of common stock	—	4,406
Shares issued—share-based compensation	223	—
September 30, 2019	647,051	202,693
June 30, 2018	645,215	180,952
Repurchase of common stock	—	3,501
Shares issued—share-based compensation	364	—
September 30, 2018	645,579	184,453
See Notes to Consolidated Financial Statements.

5

	Millions of Dollars
	Nine Months Ended September 30
	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, 2018	$	6	19,873	(15,023	)	20,489		(692	)	2,500		27,153
Cumulative effect of accounting changes	—		—	—		81		(89	)	(1	)	(9	)
Net income	—		—	—		2,340		—		227		2,567
Other comprehensive loss	—		—	—		—		(90	)	—		(90	)
Dividends paid on common stock ($2.60 per share)	—		—	—		(1,172	)	—		—		(1,172	)
Repurchase of common stock	—		—	(1,238	)	—		—		—		(1,238	)
Benefit plan activity	—		56	—		(8	)	—		—		48
Issuance of Phillips 66 Partners LP common units	—		49	—		—		—		58		107
Impacts from Phillips 66 Partners GP/IDR restructuring transaction	—		275	—		—		—		(373	)	(98	)
Distributions to noncontrolling interests	—		—	—		—		—		(176	)	(176	)
September 30, 2019	$	6	20,253	(16,261	)	21,730		(871	)	2,235		27,092
December 31, 2017	$	6	19,768	(10,378	)	16,306		(617	)	2,343		27,428
Cumulative effect of accounting changes	—		—	—		36		—		13		49
Net income	—		—	—		3,355		—		202		3,557
Other comprehensive loss	—		—	—		—		(22	)	—		(22	)
Dividends paid on common stock ($2.30 per share)	—		—	—		(1,069	)	—		—		(1,069	)
Repurchase of common stock	—		—	(4,148	)	—		—		—		(4,148	)
Benefit plan activity	—		54	—		(10	)	—		—		44
Issuance of Phillips 66 Partners LP common units	—		38	—		—		—		64		102
Distributions to noncontrolling interests	—		—	—		—		—		(146	)	(146	)
September 30, 2018	$	6	19,860	(14,526	)	18,618		(639	)	2,476		25,795

	Shares in Thousands
	Nine Months Ended September 30
	Common Stock Issued	Treasury Stock
December 31, 2018	645,692	189,526
Repurchase of common stock	—	13,167
Shares issued—share-based compensation	1,359	—
September 30, 2019	647,051	202,693
December 31, 2017	643,835	141,565
Repurchase of common stock	—	42,888
Shares issued—share-based compensation	1,744	—
September 30, 2018	645,579	184,453
See Notes to Consolidated Financial Statements.

6

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 2018 Annual Report on Form 10-K. The results of operations for the three and nine months ended September 30, 2019, are not necessarily indicative of the results expected for the full year. Certain prior period financial information has been recast to reflect the current year’s presentation.

Note 2—Changes in Accounting Principles

Effective January 1, 2019, we elected to adopt Financial Accounting Standards Board (FASB) Accounting Standards Update (ASU) No. 2018-02, “Income Statement—Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income.” This ASU permits the deferred income tax effects stranded in accumulated other comprehensive income (AOCI) resulting from the U.S. Tax Cuts and Jobs Act (the Tax Act) enacted in December 2017 to be reclassified to retained earnings. As of January 1, 2019, we recorded a cumulative effect adjustment to our opening consolidated balance sheet to reclassify an aggregate income tax benefit of $89 million, primarily related to our pension plans, from accumulated other comprehensive loss to retained earnings.

Effective January 1, 2019, we early adopted ASU 2016-13, “Financial Instruments—Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments,” using the modified retrospective transition method. This ASU amends the impairment model to utilize an expected loss methodology in place of the incurred loss methodology for financial instruments, including trade receivables, and off-balance sheet credit exposures. The amendment requires entities to consider a broader range of information to estimate expected credit losses, which may result in earlier recognition of losses. We recorded a noncash cumulative effect adjustment to retained earnings of $9 million, net of $3 million of income taxes, on our opening consolidated balance sheet as of January 1, 2019. See Note 4—Credit Losses, for more information on our presentation of credit losses.

Effective January 1, 2019, we adopted ASU No. 2016-02, “Leases (Topic 842),” using the modified retrospective transition method. The new standard establishes a right-of-use (ROU) model that requires a lessee to record a ROU asset and a lease liability on the consolidated balance sheet for all leases with terms longer than 12 months. Leases will continue to be classified as either finance or operating, with classification affecting the pattern of expense recognition in the consolidated income statement.

We elected the package of practical expedients that allowed us to carry forward our determination of whether an arrangement contained a lease and lease classification, as well as our accounting for initial direct costs for existing contracts. We recorded a noncash cumulative effect adjustment to our opening consolidated balance sheet as of January 1, 2019, to record an aggregate operating lease ROU asset and corresponding lease liability of $1,415 million and immaterial adjustments to retained earnings and noncontrolling interests. See Note 14—Leases, for the new lease disclosures required by this ASU.

7

Note 3—Sales and Other Operating Revenues

Disaggregated Revenues

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

	Millions of Dollars
	Three Months Ended September 30			Nine Months Ended September 30
	2019		2018	2019	2018
Product Line and Services
Refined petroleum products	$	22,373	23,184	64,088	64,975
Crude oil resales	3,511		4,747	10,162	12,316
Natural gas liquids (NGL)	1,025		1,782	3,508	4,751
Services and other*	309		75	410	321
Consolidated sales and other operating revenues	$	27,218	29,788	78,168	82,363
Geographic Location**
United States	$	21,160	23,068	60,602	64,481
United Kingdom	2,375		3,085	7,318	7,623
Germany	1,025		1,135	3,074	3,174
Other foreign countries	2,658		2,500	7,174	7,085
Consolidated sales and other operating revenues	$	27,218	29,788	78,168	82,363
* 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 September 30, 2019, and December 31, 2018, receivables from contracts with customers were $5,585 million and $4,993 million, respectively. Significant non-customer 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 September 30, 2019, and December 31, 2018, our asset balances related to such payments were $311 million and $248 million, respectively.

Our contract-related liabilities represent advances received from our customers prior to product or service delivery. At September 30, 2019, and December 31, 2018, contract liabilities were $218 million and $99 million, respectively.

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 an unsatisfied performance obligation. We also have certain contracts in our Midstream segment that include minimum volume commitments with fixed pricing, most of which expire by 2021. At September 30, 2019, the remaining performance obligations related to these minimum volume commitment contracts were not material.

8

Note 4—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 reconciliation, dispute resolution and payment confirmation. We may employ collection agencies and legal counsel to pursue recovery of defaulted receivables.

At September 30, 2019, we reported $7,086 million of accounts and notes receivable, net of allowances of $41 million. Changes in the allowance were not material for the three and nine months ended September 30, 2019. Based on an aging analysis at September 30, 2019, 99% of our accounts receivable were outstanding less than 60 days, with the remainder outstanding less than 90 days.

We are also exposed to credit losses from off-balance sheet exposures, such as guarantees of joint venture debt, residual value guarantees of leased assets 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 5—Inventories

Inventories consisted of the following:

	Millions of Dollars
	September 30 2019		December 31 2018
Crude oil and petroleum products	$	5,208	3,238
Materials and supplies	313		305
	$	5,521	3,543

Inventories valued on the last-in, first-out (LIFO) basis totaled $5,103 million and $3,123 million at September 30, 2019, and December 31, 2018, respectively. The estimated excess of current replacement cost over LIFO cost of inventories amounted to approximately $4.4 billion and $2.9 billion at September 30, 2019, and December 31, 2018, respectively.

9

Note 6—Investments, Loans and Long-Term Receivables

Equity Investments

Summarized 100% financial information for Chevron Phillips Chemical Company LLC (CPChem) was as follows:

	Millions of Dollars
	Three Months Ended September 30			Nine Months Ended September 30
	2019		2018	2019	2018
Revenues	$	2,369	3,195	7,209	8,773
Income before income taxes	475		552	1,522	1,819
Net income	456		531	1,464	1,766

DCP Midstream, LLC (DCP Midstream)

The fair value of our investment in DCP Midstream depends on the market value of DCP Midstream’s general partner interest in DCP Midstream, LP (DCP Partners) and the market value of DCP Partners’ common units.  At June 30, 2019, we estimated the fair value of our investment in DCP Midstream was below our book value, but we believed the condition was temporary.  The fair value of our investment in DCP Midstream further deteriorated in the third quarter as the market value of DCP Midstream’s general partner interest in DCP Partners and the market value of DCP Partners’ common units declined further.  We concluded the decline in fair value was no longer temporary due to the duration and magnitude of the decline.  Accordingly, we recorded an $853 million impairment in the third quarter of 2019. The impairment is included in the “Impairments” line on our consolidated statement of income and results in our investment in DCP Midstream having a book value of $1,358 million at September 30, 2019. See Note 13—Fair Value Measurements, for additional information on the techniques used to determine the fair value of our investment in DCP Midstream.

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

In March 2019, a wholly owned subsidiary of Dakota Access closed an offering of $2,500 million aggregate principal amount of unsecured senior notes. The net proceeds from the issuance of these notes were used to repay amounts outstanding under existing credit facilities of Dakota Access and ETCO. 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, if Dakota Access receives an unfavorable court ruling related to certain disputed construction permits and Dakota Access determines that an equity contribution trigger event has occurred, the venturers may be severally required to make proportionate equity contributions to Dakota Access and ETCO up to an aggregate maximum of approximately $2,525 million. Phillips 66 Partners’ share of the maximum potential equity contributions under the CECU is approximately $631 million.

Gray Oak Pipeline, LLC (Gray Oak)

In February 2019, Gray Oak Holdings LLC (Holdings LLC), a consolidated subsidiary of Phillips 66 Partners, transferred a 10% ownership interest in Gray Oak to a third party that exercised a purchase option, for proceeds of $81 million. This transfer was accounted for as a sale and resulted in a decrease in Holdings LLC’s ownership interest in Gray Oak from 75% to 65% and the recognition of an immaterial gain. The proceeds received from this sale are presented as an investing cash inflow in the “Proceeds from asset dispositions” line on our consolidated statement of cash flows. At September 30, 2019, Phillips 66 Partners’ effective ownership interest in the Gray Oak Pipeline was 42.25%.

10

In June 2019, Gray Oak entered into a third-party term loan facility with an initial borrowing capacity of $1,230 million, which was increased in July 2019 to $1,317 million. Borrowings under the facility are due on June 3, 2022. Phillips 66 Partners and its co-venturers provided a guarantee through an equity contribution agreement requiring proportionate equity contributions to Gray Oak up to the total outstanding loan amount. Under the agreement, Phillips 66 Partners’ maximum potential amount of future obligations is $556 million, plus any accrued interest and associated fees, which would be required if the term loan facility is fully utilized and Gray Oak defaults on its obligations. At September 30, 2019, Gray Oak had outstanding borrowings of $904 million, and Phillips 66 Partners’ 42.25% proportionate exposure under the equity contribution agreement was $382 million. The net proceeds from the term loan were used by Gray Oak for construction of the Gray Oak Pipeline and repayment of amounts borrowed under a related party loan agreement that Phillips 66 Partners and its co-venturers executed in March 2019 and terminated upon the repayment by Gray Oak in June. The total related party loan to and repayment received from Gray Oak was $95 million.

At September 30, 2019, Phillips 66 Partners’ maximum exposure to loss was $1,130 million, which represented the book value of the investment in Gray Oak of $748 million and the term loan guarantee of $382 million. See Note 21—Phillips 66 Partners LP, for additional information regarding Phillips 66 Partners’ ownership in Holdings LLC and Gray Oak.

Phillips 66 Partners accounts for the investment in Gray Oak under the equity method because it does not have sufficient voting rights over key governance provisions to assert control over Gray Oak. Gray Oak is considered a variable interest entity (VIE) because it does not have sufficient equity at risk to fully fund the construction of all assets required for principal operations. Phillips 66 Partners has determined it is not the primary beneficiary because it and its co-venturers jointly direct the activities of Gray Oak that most significantly impact Gray Oak’s economic performance.

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 OnCue’s economic performance. At September 30, 2019, our maximum exposure to loss was $139 million, which represented the book value of our investment in OnCue of $76 million and guaranteed debt obligations of $63 million.

Note 7—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
	September 30, 2019				December 31, 2018
	Gross PP&E		Accum. D&A	Net PP&E	Gross PP&E	Accum. D&A	Net PP&E
Midstream	$	10,759	2,316	8,443	9,663	2,100	7,563
Chemicals	—		—	—	—	—	—
Refining	23,189		10,084	13,105	22,640	9,531	13,109
Marketing and Specialties	1,656		927	729	1,671	926	745
Corporate and Other	1,309		632	677	1,223	622	601
	$	36,913	13,959	22,954	35,197	13,179	22,018

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Note 8—Earnings Per Share

The numerator of basic earnings per share (EPS) is net income attributable to Phillips 66, reduced by 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 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 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 September 30								Nine Months Ended September 30
	2019					2018			2019				2018
	Basic			Diluted		Basic		Diluted	Basic		Diluted		Basic		Diluted
Amounts attributed to Phillips 66 Common Stockholders (millions):
Net income attributable to Phillips 66	$	712		712		1,492		1,492	2,340		2,340		3,355		3,355
Income allocated to participating securities	(2		)	(1	)	(1	)	—	(5	)	(1	)	(4	)	—
Net income available to common stockholders	$	710		711		1,491		1,492	2,335		2,339		3,351		3,355
Weighted-average common shares outstanding (thousands):	446,498			449,005		463,002		466,109	450,836		453,398		470,471		473,760
Effect of share-based compensation	2,507			1,996		3,107		3,331	2,562		2,412		3,289		3,460
Weighted-average common shares outstanding—EPS	449,005			451,001		466,109		469,440	453,398		455,810		473,760		477,220
Earnings Per Share of Common Stock (dollars)	$	1.58		1.58		3.20		3.18	5.15		5.13		7.07		7.03

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Note 9—Debt

2019 Activities

Debt Issuances and Repayments

On September 6, 2019, Phillips 66 Partners closed on a public offering of $900 million aggregate principal amount of unsecured notes consisting of:

• $300 million aggregate principal amount of 2.450% Senior Notes due December 15, 2024.

• $600 million aggregate principal amount of 3.150% Senior Notes due December 15, 2029.

Interest on each series of senior notes is payable semi-annually in arrears on June 15 and December 15 of each year, commencing on June 15, 2020. On September 13, 2019, Phillips 66 Partners used a portion of the net proceeds to repay the $400 million outstanding principal balance of its term loans due March 2020, and on October 15, 2019, Phillips 66 Partners used a portion of the net proceeds to repay the $300 million outstanding principal balance of its 2.646% Senior Notes due February 2020.

Credit Agreement Amendment and Restatement

On July 30, 2019, we amended and restated our revolving credit agreement. The agreement extended the scheduled maturity from October 3, 2021, to July 30, 2024. No other material amendments were made to the agreement, and the overall capacity remains at $5 billion with an option to increase the overall capacity to $6 billion, subject to certain conditions. 

On July 30, 2019, Phillips 66 Partners amended and restated its revolving credit agreement. The agreement extended the scheduled maturity from October 3, 2021, to July 30, 2024. No other material amendments were made to the agreement, and the overall capacity remains at $750 million with an option to increase the overall capacity to $1 billion, subject to certain conditions.

Phillips 66’s revolving credit facility had no outstanding balance at September 30, 2019, and December 31, 2018. Phillips 66 Partners’ revolving credit facility had no amount directly drawn at September 30, 2019, compared with borrowings of $125 million at December 31, 2018.

2018 Activities

Debt Issuances and Repayments

On March 1, 2018, Phillips 66 closed on a public offering of $1,500 million aggregate principal amount of unsecured notes consisting of:

• $500 million of floating-rate Senior Notes due February 2021. Interest on these notes is equal to the three-month London Interbank Offered Rate (LIBOR) plus 0.60% per annum and is payable quarterly in arrears on February 26, May 26, August 26 and November 26, beginning on May 29, 2018.

• $800 million of 3.900% Senior Notes due March 2028. Interest on these notes is payable semiannually on March 15 and September 15 of each year, beginning on September 15, 2018.

• An additional $200 million of our 4.875% Senior Notes due November 2044. Interest on these notes is payable semiannually on May 15 and November 15 of each year, beginning on May 15, 2018.

These notes are guaranteed by Phillips 66 Company, a wholly owned subsidiary. Phillips 66 used the net proceeds from the issuance of these notes and cash on hand to repay commercial paper borrowings during the three months ended March 31, 2018, and for general corporate purposes. The commercial paper borrowings during the three months ended March 31, 2018, were primarily used to fund a Stock Purchase and Sale Agreement (Purchase Agreement). See Note 17—Treasury Stock, for additional information.

In June 2018, Phillips 66 repaid $250 million of the $450 million outstanding under its three-year term loan facility due April 2020.

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Note 10—Guarantees

At September 30, 2019, 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.

Guarantees of Joint Venture Obligations

In June 2019, Phillips 66 Partners issued a guarantee for 42.25% of Gray Oak’s third-party term loan facility. See Note 6—Investments, Loans and Long-Term Receivables, for additional information.

In addition, at September 30, 2019, we had other guarantees outstanding for our portion of certain joint venture debt obligations, which have remaining terms of up to six years. The maximum potential amount of future payments to third parties under these guarantees was approximately $135 million. Payment would be required if a joint venture defaults on its obligations.

Residual Value Guarantees

Under the operating lease agreement on our headquarters facility in Houston, Texas, we have a residual value guarantee with a maximum future exposure of $554 million at September 30, 2019. The operating lease term ends in June 2021 and provides us the option, at the end of the lease term, to renew the lease, purchase the facility or assist the lessor in marketing it for resale. We also have residual value guarantees associated with railcar and airplane leases with maximum future exposures totaling $344 million at September 30, 2019, which have remaining terms of up to five years.

Indemnifications

Over the years, we 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 and employee claims, as well as real estate indemnity against 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. At September 30, 2019, and December 31, 2018, the carrying amount of recorded indemnifications was $159 million and $171 million, respectively.

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 that the liability was essentially relieved or amortize the liability over an appropriate time period as the fair value of our indemnification exposure declines. 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 September 30, 2019, and December 31, 2018, environmental accruals for known contamination of $110 million and $101 million, respectively, were included in the carrying amount of recorded indemnifications. These environmental accruals were primarily included in the “Asset retirement obligations and accrued environmental costs” line 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 the 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 less than certain.

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 U.S. Environmental Protection Agency (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 at 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 September 30, 2019, and December 31, 2018, our total environmental accrual was $447 million for both periods. 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 not associated with financing arrangements resulting from throughput agreements with pipeline and processing companies. 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 September 30, 2019, we had performance obligations secured by letters of credit and bank guarantees of $644 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 income. Gains and losses from derivative contracts held for trading not directly related to our physical business are reported net in the “Other income” line on our consolidated statement of income. 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 our 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
	September 30, 2019								December 31, 2018
	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	$	1,018	(856	)	(5	)	157		1,257	(1,070	)	(89	)	98
Other assets	4		(1	)	—		3		2	—		—		2
Liabilities
Other accruals	454		(542	)	70		(18	)	—	(23	)	—		(23	)
Other liabilities and deferred credits	35		(37	)	—		(2	)	5	(7	)	—		(2	)
Total	$	1,511	(1,436	)	65		140		1,264	(1,100	)	(89	)	75

At September 30, 2019, and December 31, 2018, 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 income, were:

	Millions of Dollars
	Three Months Ended September 30				Nine Months Ended September 30
	2019		2018		2019		2018
Sales and other operating revenues	$	71	(98	)	(89	)	(227	)
Other income	20		3		33		(17	)
Purchased crude oil and products	60		(138	)	(41	)	(311	)
Net gain (loss) from commodity derivative activity	$	151	(233	)	(97	)	(555	)

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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 non-derivative positions such as inventory volumes. Financial derivative contracts may also offset physical derivative contracts, such as forward sales contracts. The percentage of our derivative contract volumes expiring within the next 12 months was at least 97% at September 30, 2019, and December 31, 2018.

	Open Position Long / (Short)
	September 30 2019		December 31 2018
Commodity
Crude oil, refined petroleum products and NGL (millions of barrels)	(35	)	(17	)

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 LIBOR and changes, if any, in our credit rating over the five-year term of the lease. The pay-fixed, receive-floating interest rate swaps have an aggregate notional value of $650 million and end in April 2021. We have designated these swaps as cash flow hedges.

The aggregate net fair value of these swaps, which is included in the “Prepaid expenses and other current assets” and “Other assets” lines on our consolidated balance sheet, totaled $1 million and $15 million at September 30, 2019, and December 31, 2018, respectively.

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 in the same period during which the hedged transaction affects earnings. Net realized gains and losses from settlements of the swaps were immaterial for the three and nine months ended September 30, 2019 and 2018.

We currently estimate that pre-tax gains of $1 million will be reclassified from accumulated other comprehensive loss into general and administrative expenses during the next 12 months as the hedged transactions settle; however, the actual amounts that will be reclassified will vary based on changes in interest rates.

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 September 30, 2019, and December 31, 2018.

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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. For the nine months ended September 30, 2019, derivative assets with an aggregate value of $117 million and derivative liabilities with an aggregate value of $82 million were transferred to Level 1 from Level 2, as measured from the beginning of the reporting period. The measurements were reclassified within the fair value hierarchy due to the availability of unadjusted quoted prices from an active market.

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 non-exchange 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 mid-market pricing convention (the mid-point 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 observed 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
	September 30, 2019
	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	$	788	657	—	1,445	(1,346	)	(5	)	—		94
OTC instruments	—		1	—	1	—		—		—		1
Physical forward contracts	—		64	1	65	—		—		—		65
Interest rate derivatives	—		1	—	1	—		—		—		1
Rabbi trust assets	122		—	—	122	N/A		N/A		—		122
	$	910	723	1	1,634	(1,346	)	(5	)	—		283
Commodity Derivative Liabilities
Exchange-cleared instruments	$	748	669	—	1,417	(1,346	)	(70	)	—		1
OTC instruments	—		3	—	3	—		—		—		3
Physical forward contracts	—		16	—	16	—		—		—		16
Floating-rate debt	—		1,075	—	1,075	N/A		N/A		—		1,075
Fixed-rate debt, excluding capital leases	—		12,050	—	12,050	N/A		N/A		(1,377	)	10,673
	$	748	13,813	—	14,561	(1,346	)	(70	)	(1,377	)	11,768

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	Millions of Dollars
	December 31, 2018
	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	$	674	547	—	1,221	(1,075	)	(89	)	—	57
Physical forward contracts	—		39	4	43	—		—		—	43
Interest rate derivatives	—		15	—	15	—		—		—	15
Rabbi trust assets	104		—	—	104	N/A		N/A		—	104
	$	778	601	4	1,383	(1,075	)	(89	)	—	219
Commodity Derivative Liabilities
Exchange-cleared instruments	$	605	472	—	1,077	(1,075	)	—		—	2
Physical forward contracts	—		20	—	20	—		—		—	20
OTC instruments	—		3	—	3	—		—		—	3
Floating-rate debt	—		1,200	—	1,200	N/A		N/A		—	1,200
Fixed-rate debt, excluding capital leases	—		9,727	—	9,727	N/A		N/A		49	9,776
	$	605	11,422	—	12,027	(1,075	)	—		49	11,001

The rabbi trust assets are recorded in the “Investments and long-term receivables” line and floating-rate and fixed-rate debt are recorded in the “Short-term debt” and “Long-term debt” lines 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

The nonrecurring fair value measurement used to record an impairment of our DCP Midstream investment consisted of two valuations: 

• The fair value of our share of DCP Midstream’s limited partner interest in DCP Partners was estimated based on an average market price of DCP Partners’ common units for a 20 day trading period encompassing September 30, 2019.

• The fair value of our share of DCP Midstream’s general partner interest in DCP Partners was estimated using two primary inputs: 1) estimated future cash flows of distributions attributable to the incentive distribution rights (IDRs) from DCP Partners, and 2) a multiple of those cash flows based on internal estimates and observation of IDR conversion transactions by other master limited partnerships.

Taken together, we concluded the two valuations above resulted in an overall Level 3 nonrecurring fair value measurement. See Note 6—Investments, Loans and Long-Term Receivables, for additional information on the impairment.

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Note 14—Leases

We lease marine vessels, tugboats, barges, pipelines, storage tanks, railcars, service station sites, office buildings, corporate aircraft, land and other facilities and equipment. In determining whether an agreement contains a lease, we consider our ability to control the asset and whether there are limitations on our control through third-party participation or vendor substitution rights. Certain leases include escalation clauses for adjusting rental payments to reflect changes in price indices, as well as renewal options and/or options to purchase the leased property. Renewal options have been included only when reasonably certain of exercise. There are no significant restrictions imposed on us in our lease agreements with regards to dividend payments, asset dispositions or borrowing ability. Certain leases have residual value guarantees, which may require additional payments at the end of the lease term if future fair values decline below contractual lease balances.

In our implementation of ASU No. 2016-02, we elected to discount lease obligations using our incremental borrowing rate. Furthermore, we elected to separate costs for lease and service components for contracts involving the following asset types: marine vessels, tugboats, barges and consignment service stations. For these contracts, we allocate the consideration payable between the lease and service components using the relative standalone prices of each component. For contracts involving all other asset types, we elected the practical expedient to account for the lease and service components on a combined basis. Our right-of-way agreements in effect prior to January 1, 2019, were not accounted for as leases as they were not initially determined to be leases at their commencement dates. However, modifications to these agreements or new agreements will be assessed and accounted for accordingly under ASU No. 2016-02. For short-term leases, which are leases that, at the commencement date, have a lease term of 12 months or less and do not include an option to purchase the underlying asset that is reasonably certain to exercise, we elected to not recognize the ROU asset and corresponding lease liability on our consolidated balance sheet.

The following table indicates the consolidated balance sheet line items that include the ROU assets and lease liabilities for our finance and operating leases:

	Millions of Dollars
	September 30, 2019
	Finance Leases		Operating Leases
Right-of-Use Assets
Net properties, plants and equipment	$	177	—
Other assets	—		1,338
Total right-of-use assets	$	177	1,338
Lease Liabilities
Short-term debt	$	13	—
Other accruals	—		468
Long-term debt	153		—
Other liabilities and deferred credits	—		820
Total lease liabilities	$	166	1,288

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Future minimum lease payments at September 30, 2019, for finance and operating lease liabilities were:

	Millions of Dollars
	Finance Leases			Operating Leases
Remainder of 2019	$	4		126
2020	19			469
2021	18			245
2022	15			157
2023	15			102
Remaining years	135			355
Future minimum lease payments	206			1,454
Amount representing interest or discounts	(40		)	(166	)
Total lease liabilities	$	166		1,288

Our finance lease liabilities relate primarily to an oil terminal in the United Kingdom. The lease liability for this finance lease is subject to foreign currency translation adjustments each reporting period.

Components of net lease cost for the three and nine months ended September 30, 2019, were:

	Millions of Dollars
	Three Months Ended September 30			Nine Months Ended September 30
	2019			2019
Finance lease cost
Amortization of right-of-use assets	$	5		15
Interest on lease liabilities	2			5
Total finance lease cost	7			20
Operating lease cost	126			386
Short-term lease cost	29			93
Variable lease cost	6			18
Sublease income	(4		)	(14	)
Total net lease cost	$	164		503

Cash paid for amounts included in the measurement of our lease liabilities for the nine months ended September 30, 2019, were:

	Millions of Dollars
Operating cash outflows—finance leases	$	5
Operating cash outflows—operating leases	397
Financing cash outflows—finance leases	18

During the nine months ended September 30, 2019, we recorded noncash ROU assets and corresponding operating lease liabilities totaling $259 million related to new and modified lease agreements.

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At September 30, 2019, the weighted-average remaining lease term and discount rate for our lease liabilities were:

Weighted-average remaining lease term—finance leases (years)	12.7
Weighted-average remaining lease term—operating leases (years)	5.5
Weighted-average discount rate—finance leases (percent)	3.7	%
Weighted-average discount rate—operating leases (percent)	3.9

Note 15—Pension and Postretirement Plans

The components of net periodic benefit cost for the three and nine months ended September 30, 2019 and 2018, were as follows:

	Millions of Dollars
	Pension Benefits									Other Benefits
	2019					2018				2019		2018
	U.S.			Int’l.		U.S.		Int’l.
Components of Net Periodic Benefit Cost
Three Months Ended September 30
Service cost	$	32		5		34		5		1		2
Interest cost	27			6		26		6		2		1
Expected return on plan assets	(36		)	(10	)	(42	)	(11	)	—		—
Amortization of prior service credit	—			—		—		—		—		—
Recognized net actuarial loss	14			2		14		5		—		—
Settlements	1			—		49		—		—		—
Net periodic benefit cost*	$	38		3		81		5		3		3
Nine Months Ended September 30
Service cost	$	95		17		102		22		4		5
Interest cost	81			19		78		21		6		5
Expected return on plan assets	(107		)	(33	)	(127	)	(35	)	—		—
Amortization of prior service credit	—			—		—		(1	)	(1	)	(1	)
Recognized net actuarial loss	40			5		44		15		—		—
Settlements	7			—		54		—		—		—
Net periodic benefit cost*	$	116		8		151		22		9		9
* Included in the “Operating expenses” and “Selling, general and administrative expenses” lines on our consolidated statement of income.

During the nine months ended September 30, 2019, we contributed $50 million to our U.S. pension and other postretirement benefit plans and $21 million to our international pension plans. We currently expect to make additional contributions of approximately $8 million to our U.S. pension and other postretirement benefit plans and $7 million to our international pension plans during the remainder of 2019.

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Note 16—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, 2018	$	(472	)	(228	)	8		(692	)
Other comprehensive income (loss) before reclassifications	5			(124	)	(6	)	(125	)
Amounts reclassified from accumulated other comprehensive loss
Defined benefit plans*
Amortization of net actuarial loss, prior service credit and settlements	40			—		—		40
Foreign currency translation	—			—		—		—
Hedging	—			—		(5	)	(5	)
Net current period other comprehensive income (loss)	45			(124	)	(11	)	(90	)
Income taxes reclassified to retained earnings**	(93		)	2		2		(89	)
September 30, 2019	$	(520	)	(350	)	(1	)	(871	)
December 31, 2017	$	(598	)	(26	)	7		(617	)
Other comprehensive income (loss) before reclassifications	10			(113	)	9		(94	)
Amounts reclassified from accumulated other comprehensive loss
Defined benefit plans*
Amortization of net actuarial loss, prior service credit and settlements	84			—		—		84
Foreign currency translation	—			(10	)	—		(10	)
Hedging	—			—		(2	)	(2	)
Net current period other comprehensive income (loss)	94			(123	)	7		(22	)
September 30, 2018	$	(504	)	(149	)	14		(639	)
* Included in the computation of net periodic benefit cost. See Note 15—Pension and Postretirement Plans, for additional information.
** As of January 1, 2019, stranded income taxes related to the enactment of the Tax Act in December 2017 were reclassified to retained earnings upon adoption of ASU No. 2018-02. See Note 2—Changes in Accounting Principles, for additional information on our adoption of this ASU.

Note 17—Treasury Stock

In February 2018, we entered into a Purchase Agreement with Berkshire Hathaway Inc. and National Indemnity Company, a wholly owned subsidiary of Berkshire Hathaway Inc., to repurchase 35,000,000 shares of Phillips 66 common stock for an aggregate purchase price of $3,280 million. Pursuant to the Purchase Agreement, the purchase price per share of $93.725 was based on the volume-weighted-average price of our common stock on the New York Stock Exchange on February 13, 2018. The transaction closed in February 2018. We funded the repurchase with cash of $1,880 million and borrowings of $1,400 million under our commercial paper program. These borrowings were subsequently refinanced through a public offering of senior notes in March 2018. This specific share repurchase transaction was separately authorized by our Board of Directors and therefore did not impact previously announced authorizations to repurchase shares of Phillips 66 common stock under our share repurchase programs.

On October 4, 2019, our Board of Directors approved a new share repurchase program that authorizes us to repurchase up to $3 billion of our common stock, bringing the total amount of share repurchases authorized by our Board of Directors since July 2012 to an aggregate of $15 billion.

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Note 18—Related Party Transactions

Significant transactions with related parties were:

	Millions of Dollars
	Three Months Ended September 30			Nine Months Ended September 30
	2019		2018	2019	2018
Operating revenues and other income (a)	$	756	955	2,235	2,717
Purchases (b)	2,842		3,667	8,770	9,534
Operating expenses and selling, general and administrative expenses (c)	8		12	25	44

(a) We sold NGL and other petrochemical feedstocks, along with solvents, to CPChem, gas oil and hydrogen feedstocks to Excel Paralubes (Excel), and refined petroleum products to OnCue. We also sold certain feedstocks and intermediate products to WRB and acted as agent for WRB in supplying crude oil and other feedstocks for a fee. In addition, we charged several of our 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 and NGL from WRB and also acted as agent for WRB in distributing solvents. We also purchased natural gas and NGL from DCP Midstream and CPChem, as well as other feedstocks from various 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 affiliates for transporting crude oil, refined petroleum products and NGL.

(c) We paid utility and processing fees to various affiliates.

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Note 19—Segment Disclosures and Related Information

During the fourth quarter of 2018, the segment performance measure used by our chief executive officer to assess performance and allocate resources was changed from “net income” to “income before income taxes.”  Prior-period segment information has been recast to conform to the current presentation.

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, 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, as well as power generation operations.

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 September 30					Nine Months Ended September 30
	2019			2018		2019		2018
Sales and Other Operating Revenues*
Midstream
Total sales	$	1,602		2,287		5,208		6,234
Intersegment eliminations	(482		)	(524	)	(1,526	)	(1,555	)
Total Midstream	1,120			1,763		3,682		4,679
Chemicals	1			1		3		4
Refining
Total sales	19,591			21,949		56,839		61,707
Intersegment eliminations	(11,452		)	(12,807	)	(34,008	)	(37,027	)
Total Refining	8,139			9,142		22,831		24,680
Marketing and Specialties
Total sales	18,535			19,332		53,464		54,471
Intersegment eliminations	(584		)	(457	)	(1,833	)	(1,492	)
Total Marketing and Specialties	17,951			18,875		51,631		52,979
Corporate and Other	7			7		21		21
Consolidated sales and other operating revenues	$	27,218		29,788		78,168		82,363
* See Note 3—Sales and Other Operating Revenues, for further details on our disaggregated sales and other operating revenues.
Income (Loss) Before Income Taxes
Midstream	$	(460	)	284		279		802
Chemicals	227			263		729		873
Refining	856			1,232		1,641		2,534
Marketing and Specialties	498			423		1,056		968
Corporate and Other	(178		)	(227	)	(593	)	(650	)
Consolidated income before income taxes	$	943		1,975		3,112		4,527

	Millions of Dollars
	September 30 2019		December 31 2018
Total Assets
Midstream	$	15,209	14,329
Chemicals	6,269		6,235
Refining	25,280		23,230
Marketing and Specialties	8,338		6,572
Corporate and Other	3,645		3,936
Consolidated total assets	$	58,741	54,302

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Note 20—Income Taxes

Our effective income tax rate for the three and nine months ended September 30, 2019, was 16% and 18%, respectively, compared with 21% for the corresponding periods of 2018. The decrease in our effective tax rate for the three months ended September 30, 2019, compared with the three months ended September 30, 2018, was primarily attributable to the impact of our foreign operations. The decrease in our effective tax rate for the nine months ended September 30, 2019, compared with the nine months ended September 30, 2018, was primarily attributable to an income tax benefit of $45 million recorded in the second quarter in connection with the Internal Revenue Service’s issuance of additional guidance related to the calculation of the one-time deemed repatriation tax on foreign-source earnings that were previously tax deferred, as well as the impact of our foreign operations.

The effective income tax rate for the three and nine months ended September 30, 2019, varies from the U.S. federal statutory income tax rate of 21%, primarily due to the impact of our foreign operations and income attributable to noncontrolling interests, partially offset by state income tax expense. For the nine months ended September 30, 2019, there was an additional reduction in the effective tax rate related to the aforementioned $45 million income tax benefit.

Note 21—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 consist of crude oil, refined petroleum product and NGL transportation, terminaling, processing 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 September 30, 2019, we owned a 75% limited partner interest in Phillips 66 Partners, while the public owned a 25% 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
	September 30 2019		December 31 2018
Cash and cash equivalents	$	655	1
Equity investments*	2,921		2,448
Net properties, plants and equipment	3,258		3,052
Short-term debt	325		50
Long-term debt	3,490		2,998
* Included in “Investments and long-term receivables” line on the Phillips 66 consolidated balance sheet.

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2019 Activities

For the three and nine months ended September 30, 2019, on a settlement-date basis, Phillips 66 Partners generated net proceeds of $91 million and $133 million, respectively, from common units issued under its continuous offering of common units, or at-the-market (ATM) programs. For the three and nine months ended September 30, 2018, Phillips 66 Partners generated net proceeds of $47 million and $114 million, respectively, under its ATM programs.

Phillips 66 Partners holds an investment in the Gray Oak Pipeline through Holdings LLC. In December 2018, a third party exercised its option to acquire a 35% interest in Holdings LLC. Because Holdings LLC’s sole asset was its ownership interest in Gray Oak, which is considered a financial asset, and because certain restrictions were placed on the third party’s ability to transfer or sell its interest in Holdings LLC during the construction of the Gray Oak Pipeline, the legal sale of the 35% interest did not qualify as a sale under GAAP. As such, the contributions the third party is making to Holdings LLC to cover its share of previously incurred and future construction costs plus a premium to Phillips 66 Partners are reflected as a long-term obligation in the “Other liabilities and deferred credits” line on our consolidated balance sheet and financing cash inflows in the “Other” line on our consolidated statement of cash flows. After construction of the Gray Oak Pipeline is fully completed, these restrictions expire, and the sale will be recognized under GAAP. Phillips 66 Partners will continue to control and consolidate Holdings LLC after sale recognition, and therefore the third party’s 35% interest will be recharacterized from a long-term obligation to a noncontrolling interest on our consolidated balance sheet at that time. Also at that time, the premium paid will be recharacterized from a long-term obligation to a gain in our consolidated statement of income. For the nine months ended September 30, 2019, the third party contributed an aggregate of $341 million into Holdings LLC, which Holdings LLC used to fund its portion of Gray Oak’s cash calls. See Note 6—Investments, Loans and Long-Term Receivables, for further discussion regarding Phillips 66 Partners’ investment in Gray Oak.

Restructuring Transaction

On August 1, 2019, Phillips 66 Partners completed a restructuring transaction to eliminate the IDRs held by us and convert our 2% economic general partner interest into a non-economic general partner interest in exchange for 101 million Phillips 66 Partners’ common units.  As a result of the restructuring transaction, the balance of “Noncontrolling interests” on our consolidated balance sheet decreased $373 million, with a $275 million increase to “Capital in excess of par,” a $91 million increase in “Deferred income taxes” and $7 million of transaction costs. No distributions will be made on the general partner interest after August 1, 2019. At September 30, 2019, we owned 170 million Phillips 66 Partners’ common units, representing 75% of Phillips 66 Partners’ outstanding common units. 

Note 22—Condensed Consolidating Financial Information

Phillips 66 has senior notes outstanding, the payment obligations of which are fully and unconditionally guaranteed by Phillips 66 Company, a 100% owned subsidiary. The following condensed consolidating financial information presents the results of operations, financial position and cash flows for:

• Phillips 66 and Phillips 66 Company (in each case, reflecting investments in subsidiaries utilizing the equity method of accounting).

• All other nonguarantor subsidiaries.

• The consolidating adjustments necessary to present Phillips 66’s results on a consolidated basis.

This condensed consolidating financial information should be read in conjunction with the accompanying consolidated financial statements and notes.

30

	Millions of Dollars
	Three Months Ended September 30, 2019
Statement of Income	Phillips 66			Phillips 66 Company	All Other Subsidiaries		Consolidating Adjustments		Total Consolidated
Revenues and Other Income
Sales and other operating revenues	$	—		20,947	6,271		—		27,218
Equity in earnings of affiliates	781			214	147		(643	)	499
Net gain on dispositions	—			1	17		—		18
Other income	—			25	11		—		36
Intercompany revenues	—			837	3,704		(4,541	)	—
Total Revenues and Other Income	781			22,024	10,150		(5,184	)	27,771
Costs and Expenses
Purchased crude oil and products	—			19,383	8,866		(4,443	)	23,806
Operating expenses	—			959	264		(17	)	1,206
Selling, general and administrative expenses	1			324	94		(3	)	416
Depreciation and amortization	—			230	106		—		336
Impairments	—			—	853		—		853
Taxes other than income taxes	—			77	28		—		105
Accretion on discounted liabilities	—			4	2		—		6
Interest and debt expense	85			35	67		(78	)	109
Foreign currency transaction gains	—			—	(9	)	—		(9	)
Total Costs and Expenses	86			21,012	10,271		(4,541	)	26,828
Income (loss) before income taxes	695			1,012	(121	)	(643	)	943
Income tax expense (benefit)	(17		)	231	(64	)	—		150
Net Income (Loss)	712			781	(57	)	(643	)	793
Less: net income attributable to noncontrolling interests	—			—	81		—		81
Net Income (Loss) Attributable to Phillips 66	$	712		781	(138	)	(643	)	712
Comprehensive Income (Loss)	$	608		677	(170	)	(426	)	689

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	Millions of Dollars
	Three Months Ended September 30, 2018
Statement of Income	Phillips 66			Phillips 66 Company	All Other Subsidiaries	Consolidating Adjustments		Total Consolidated
Revenues and Other Income
Sales and other operating revenues	$	—		22,866	6,922	—		29,788
Equity in earnings of affiliates	1,573			1,160	186	(2,140	)	779
Net gain on dispositions	—			—	1	—		1
Other income	—			23	1	—		24
Intercompany revenues	—			1,091	4,371	(5,462	)	—
Total Revenues and Other Income	1,573			25,140	11,481	(7,602	)	30,592
Costs and Expenses
Purchased crude oil and products	—			21,656	10,095	(5,366	)	26,385
Operating expenses	—			946	280	(20	)	1,206
Selling, general and administrative expenses	2			338	103	(3	)	440
Depreciation and amortization	—			232	114	—		346
Impairments	—			1	—	—		1
Taxes other than income taxes	—			84	25	—		109
Accretion on discounted liabilities	—			4	1	—		5
Interest and debt expense	100			36	62	(73	)	125
Total Costs and Expenses	102			23,297	10,680	(5,462	)	28,617
Income before income taxes	1,471			1,843	801	(2,140	)	1,975
Income tax expense (benefit)	(21		)	270	158	—		407
Net Income	1,492			1,573	643	(2,140	)	1,568
Less: net income attributable to noncontrolling interests	—			—	76	—		76
Net Income Attributable to Phillips 66	$	1,492		1,573	567	(2,140	)	1,492
Comprehensive Income	$	1,533		1,614	635	(2,173	)	1,609

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	Millions of Dollars
	Nine Months Ended September 30, 2019
Statement of Income	Phillips 66			Phillips 66 Company	All Other Subsidiaries	Consolidating Adjustments		Total Consolidated
Revenues and Other Income
Sales and other operating revenues	$	—		60,060	18,108	—		78,168
Equity in earnings of affiliates	2,557			1,645	514	(3,053	)	1,663
Net gain on dispositions	—			1	18	—		19
Other income	—			67	30	—		97
Intercompany revenues	—			2,720	11,014	(13,734	)	—
Total Revenues and Other Income	2,557			64,493	29,684	(16,787	)	79,947
Costs and Expenses
Purchased crude oil and products	—			56,648	26,202	(13,435	)	69,415
Operating expenses	—			2,876	861	(59	)	3,678
Selling, general and administrative expenses	5			898	295	(8	)	1,190
Depreciation and amortization	—			686	315	—		1,001
Impairments	—			1	855	—		856
Taxes other than income taxes	—			242	88	—		330
Accretion on discounted liabilities	—			13	4	—		17
Interest and debt expense	267			108	200	(232	)	343
Foreign currency transaction losses	—			—	5	—		5
Total Costs and Expenses	272			61,472	28,825	(13,734	)	76,835
Income before income taxes	2,285			3,021	859	(3,053	)	3,112
Income tax expense (benefit)	(55		)	464	136	—		545
Net Income	2,340			2,557	723	(3,053	)	2,567
Less: net income attributable to noncontrolling interests	—			—	227	—		227
Net Income Attributable to Phillips 66	$	2,340		2,557	496	(3,053	)	2,340
Comprehensive Income	$	2,250		2,467	615	(2,855	)	2,477

33

	Millions of Dollars
	Nine Months Ended September 30, 2018
Statement of Income	Phillips 66			Phillips 66 Company	All Other Subsidiaries		Consolidating Adjustments		Total Consolidated
Revenues and Other Income
Sales and other operating revenues	$	—		63,703	18,660		—		82,363
Equity in earnings of affiliates	3,600			2,638	566		(4,858	)	1,946
Net gain on dispositions	—			7	11		—		18
Other income	—			25	22		—		47
Intercompany revenues	—			2,456	11,386		(13,842	)	—
Total Revenues and Other Income	3,600			68,829	30,645		(18,700	)	84,374
Costs and Expenses
Purchased crude oil and products	—			59,724	27,113		(13,567	)	73,270
Operating expenses	—			2,771	875		(51	)	3,595
Selling, general and administrative expenses	6			966	294		(8	)	1,258
Depreciation and amortization	—			691	328		—		1,019
Impairments	—			2	5		—		7
Taxes other than income taxes	—			248	80		—		328
Accretion on discounted liabilities	—			13	4		—		17
Interest and debt expense	304			108	187		(216	)	383
Foreign currency transaction gains	—			—	(30	)	—		(30	)
Total Costs and Expenses	310			64,523	28,856		(13,842	)	79,847
Income before income taxes	3,290			4,306	1,789		(4,858	)	4,527
Income tax expense (benefit)	(65		)	706	329		—		970
Net Income	3,355			3,600	1,460		(4,858	)	3,557
Less: net income attributable to noncontrolling interests	—			—	202		—		202
Net Income Attributable to Phillips 66	$	3,355		3,600	1,258		(4,858	)	3,355
Comprehensive Income	$	3,333		3,578	1,357		(4,733	)	3,535

34

	Millions of Dollars
	September 30, 2019
Balance Sheet	Phillips 66			Phillips 66 Company		All Other Subsidiaries		Consolidating Adjustments		Total Consolidated
Assets
Cash and cash equivalents	$	—		576		1,692		—		2,268
Accounts and notes receivable	—			5,316		4,106		(2,336	)	7,086
Inventories	—			3,673		1,848		—		5,521
Prepaid expenses and other current assets	—			525		217		—		742
Total Current Assets	—			10,090		7,863		(2,336	)	15,617
Investments and long-term receivables	33,126			24,034		9,884		(52,897	)	14,147
Net properties, plants and equipment	—			13,350		9,604		—		22,954
Goodwill	—			2,853		417		—		3,270
Intangibles	—			732		140		—		872
Other assets	12			5,882		729		(4,742	)	1,881
Total Assets	$	33,138		56,941		28,637		(59,975	)	58,741
Liabilities and Equity
Accounts payable	$	—		6,944		3,765		(2,336	)	8,373
Short-term debt	500			11		331		—		842
Accrued income and other taxes	—			672		456		—		1,128
Employee benefit obligations	—			569		55		—		624
Other accruals	133			1,310		262		(589	)	1,116
Total Current Liabilities	633			9,506		4,869		(2,925	)	12,083
Long-term debt	7,433			55		3,595		—		11,083
Asset retirement obligations and accrued environmental costs	—			453		164		—		617
Deferred income taxes	—			3,761		1,743		(1	)	5,503
Employee benefit obligations	—			725		180		—		905
Other liabilities and deferred credits	185			9,448		5,351		(13,526	)	1,458
Total Liabilities	8,251			23,948		15,902		(16,452	)	31,649
Common stock	3,998			25,802		9,239		(35,041	)	3,998
Retained earnings	21,760			8,062		1,662		(9,754	)	21,730
Accumulated other comprehensive loss	(871		)	(871	)	(401	)	1,272		(871	)
Noncontrolling interests	—			—		2,235		—		2,235
Total Liabilities and Equity	$	33,138		56,941		28,637		(59,975	)	58,741

35

	Millions of Dollars
	December 31, 2018
Balance Sheet	Phillips 66			Phillips 66 Company		All Other Subsidiaries		Consolidating Adjustments		Total Consolidated
Assets
Cash and cash equivalents	$	—		1,648		1,371		—		3,019
Accounts and notes receivable	9			4,255		3,202		(1,293	)	6,173
Inventories	—			2,489		1,054		—		3,543
Prepaid expenses and other current assets	2			373		99		—		474
Total Current Assets	11			8,765		5,726		(1,293	)	13,209
Investments and long-term receivables	32,712			22,799		9,829		(50,919	)	14,421
Net properties, plants and equipment	—			13,218		8,800		—		22,018
Goodwill	—			2,853		417		—		3,270
Intangibles	—			726		143		—		869
Other assets	9			335		173		(2	)	515
Total Assets	$	32,732		48,696		25,088		(52,214	)	54,302
Liabilities and Equity
Accounts payable	$	—		5,415		2,464		(1,293	)	6,586
Short-term debt	—			11		56		—		67
Accrued income and other taxes	—			458		658		—		1,116
Employee benefit obligations	—			663		61		—		724
Other accruals	66			227		149		—		442
Total Current Liabilities	66			6,774		3,388		(1,293	)	8,935
Long-term debt	7,928			54		3,111		—		11,093
Asset retirement obligations and accrued environmental costs	—			458		166		—		624
Deferred income taxes	1			3,541		1,735		(2	)	5,275
Employee benefit obligations	—			676		191		—		867
Other liabilities and deferred credits	55			4,611		4,287		(8,598	)	355
Total Liabilities	8,050			16,114		12,878		(9,893	)	27,149
Common stock	4,856			24,960		8,754		(33,714	)	4,856
Retained earnings	20,518			8,314		1,249		(9,592	)	20,489
Accumulated other comprehensive loss	(692		)	(692	)	(293	)	985		(692	)
Noncontrolling interests	—			—		2,500		—		2,500
Total Liabilities and Equity	$	32,732		48,696		25,088		(52,214	)	54,302

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	Millions of Dollars
	Nine Months Ended September 30, 2019
Statement of Cash Flows	Phillips 66			Phillips 66 Company		All Other Subsidiaries		Consolidating Adjustments		Total Consolidated
Cash Flows From Operating Activities
Net Cash Provided by (Used in) Operating Activities	$	(143	)	1,645		1,730		(118	)	3,114
Cash Flows From Investing Activities
Capital expenditures and investments	—			(803	)	(1,792	)	—		(2,595	)
Proceeds from asset dispositions*	—			352		137		(350	)	139
Intercompany lending activities	2,587			(2,245	)	(342	)	—		—
Advances/loans—related parties	—			—		(95	)	—		(95	)
Collection of advances/loans—related parties	—			—		95		—		95
Other	—			(3	)	27		—		24
Net Cash Provided by (Used in) Investing Activities	2,587			(2,699	)	(1,970	)	(350	)	(2,432	)
Cash Flows From Financing Activities
Issuance of debt	—			—		1,758		—		1,758
Repayment of debt	—			(14	)	(990	)	—		(1,004	)
Issuance of common stock	15			—		—		—		15
Repurchase of common stock	(1,238		)	—		—		—		(1,238	)
Dividends paid on common stock	(1,172		)	—		(118	)	118		(1,172	)
Distributions to noncontrolling interests	—			—		(176	)	—		(176	)
Net proceeds from issuance of Phillips 66 Partners LP common units	—			—		133		—		133
Other	(49		)	(4	)	(15	)	350		282
Net Cash Provided by (Used in) Financing Activities	(2,444		)	(18	)	592		468		(1,402	)
Effect of Exchange Rate Changes on Cash and Cash Equivalents	—			—		(31	)	—		(31	)
Net Change in Cash and Cash Equivalents	—			(1,072	)	321		—		(751	)
Cash and cash equivalents at beginning of period	—			1,648		1,371		—		3,019
Cash and Cash Equivalents at End of Period	$	—		576		1,692		—		2,268
* Includes return of investments in equity affiliates.

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	Millions of Dollars
	Nine Months Ended September 30, 2018
Statement of Cash Flows	Phillips 66			Phillips 66 Company		All Other Subsidiaries		Consolidating Adjustments		Total Consolidated
Cash Flows From Operating Activities
Net Cash Provided by Operating Activities	$	3,094		3,070		1,425		(4,155	)	3,434
Cash Flows From Investing Activities
Capital expenditures and investments	—			(633	)	(1,012	)	—		(1,645	)
Proceeds from asset dispositions*	—			328		36		(325	)	39
Intercompany lending activities	904			(510	)	(394	)	—		—
Advances/loans—related parties	—			(1	)	—		—		(1	)
Other	—			(6	)	73		—		67
Net Cash Provided by (Used in) Investing Activities	904			(822	)	(1,297	)	(325	)	(1,540	)
Cash Flows From Financing Activities
Issuance of debt	1,509			—		85		—		1,594
Repayment of debt	(250		)	(9	)	(115	)	—		(374	)
Issuance of common stock	39			—		—		—		39
Repurchase of common stock	(4,148		)	—		—		—		(4,148	)
Dividends paid on common stock	(1,069		)	(3,174	)	(981	)	4,155		(1,069	)
Distributions to noncontrolling interests	—			—		(146	)	—		(146	)
Net proceeds from issuance of Phillips 66 Partners LP common units	—			—		114		—		114
Other	(79		)	—		(325	)	325		(79	)
Net Cash Used in Financing Activities	(3,998		)	(3,183	)	(1,368	)	4,480		(4,069	)
Effect of Exchange Rate Changes on Cash and Cash Equivalents	—			—		(20	)	—		(20	)
Net Change in Cash and Cash Equivalents	—			(935	)	(1,260	)	—		(2,195	)
Cash and cash equivalents at beginning of period	—			1,411		1,708		—		3,119
Cash and Cash Equivalents at End of Period	$	—		476		448		—		924
* Includes return of investments in equity affiliates.

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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, its 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 identify forward-looking statements. 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 “pre-tax income” or “pre-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 September 30, 2019, we had total assets of $58.7 billion. Our common stock trades on the New York Stock Exchange under the symbol PSX.

Executive Overview

In the third quarter of 2019, we reported earnings of $712 million and generated cash from operating activities of $1.7 billion. We used available cash to fund capital expenditures and investments of $867 million, repurchase $439 million of our common stock and pay dividends of $402 million. We ended the third quarter of 2019 with $2.3 billion of cash and cash equivalents and approximately $5.7 billion of total committed capacity available under our revolving credit facilities.

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Business Environment

The Midstream segment, which includes our 50% equity investment in DCP Midstream, LLC (DCP Midstream), contains fee-based operations that are not directly exposed to commodity price risk, as well as operations that are directly linked to natural gas liquids (NGL) prices, natural gas prices and crude oil prices. Average natural gas prices decreased in the third quarter of 2019, compared with the third quarter of 2018, due to continued supply growth. NGL prices were lower in the third quarter of 2019, compared with the third quarter of 2018, due to higher inventory levels resulting from supply growth.

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 third quarter of 2019, the benchmark high-density polyethylene chain margin further decreased, compared with the third quarter of 2018, due to higher product availability driven by recent capacity additions, the continued trade uncertainty, and a demand slowdown in Asia.

Our Refining segment results are driven by several factors, including refining margins, cost control, refinery throughput, feedstock costs, product yields and turnaround activity. The price of U.S. benchmark crude oil, West Texas Intermediate (WTI) at Cushing, Oklahoma, decreased to an average of $56.44 per barrel during the third quarter of 2019, compared with an average of $69.71 per barrel in the third quarter of 2018, due to continued growth in Permian Basin production and higher inventories resulting from numerous planned and unplanned refinery outages. Industry crack spread indicators, the difference between market prices for refined petroleum products and crude oil, are used to estimate refining margins. During the third quarter of 2019, the U.S. 3:2:1 crack spread (three barrels of crude oil producing two barrels of gasoline and one barrel of diesel) increased compared with the third quarter of 2018, following heavy planned and unplanned refinery maintenance across the United States. Northwest Europe crack spreads on average improved compared with the third quarter of 2018, due to higher diesel margins.

Results for our Marketing and Specialties (M&S) segment depend largely on marketing fuel margins, lubricant margins, and other specialty product margins. 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.

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RESULTS OF OPERATIONS

Unless otherwise indicated, discussion of results for the three and nine months ended September 30, 2019, is based on a comparison with the corresponding periods of 2018.

Basis of Presentation

During the fourth quarter of 2018, the segment performance measure used by our chief executive officer to assess performance and allocate resources was changed from “net income” to “income before income taxes.”  Prior-period segment information has been recast to conform to the current presentation.

Consolidated Results

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

	Millions of Dollars
	Three Months Ended September 30					Nine Months Ended September 30
	2019			2018		2019		2018
Midstream	$	(460	)	284		279		802
Chemicals	227			263		729		873
Refining	856			1,232		1,641		2,534
Marketing and Specialties	498			423		1,056		968
Corporate and Other	(178		)	(227	)	(593	)	(650	)
Income before income taxes	943			1,975		3,112		4,527
Income tax expense	150			407		545		970
Net income	793			1,568		2,567		3,557
Less: net income attributable to noncontrolling interests	81			76		227		202
Net income attributable to Phillips 66	$	712		1,492		2,340		3,355

Our earnings decreased $780 million, or 52%, in the third quarter of 2019, mainly reflecting:

• Impairments associated with our investment in DCP Midstream.

• Lower realized refining margins.

These decreases were partially offset by:

• Lower income tax expense.

• Improved margins from our NGL assets.

• Higher U.S. margins and volumes from our M&S segment.

41

Our earnings decreased $1,015 million, or 30%, in the nine-month period of 2019, mainly reflecting:

• Lower realized refining margins.

• Impairments associated with our investment in DCP Midstream.

• Decreased equity in earnings from CPChem.

These decreases were partially offset by:

• Higher margins and volumes from our NGL and transportation assets.

• Lower income tax expense.

• Higher global margins and volumes from our M&S segment.

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

Statement of Income Analysis

Sales and other operating revenues for the third quarter and nine-month period of 2019 decreased 9% and 5%, respectively, and purchased crude oil and products decreased 10% and 5%, respectively. These decreases were mainly driven by lower prices for refined petroleum products, crude oil and NGL.

Equity in earnings of affiliates decreased 36% and 15% in the third quarter and nine-month period of 2019. The decrease in both periods reflected lower margins at WRB Refining LP (WRB) and CPChem, as well as maintenance activities at Wood River and Borger refineries during the third quarter of 2019. Lower equity earnings in the third quarter of 2019 also reflected asset and goodwill impairments at DCP Midstream and a lower-of-cost-or-market inventory write-down at CPChem. See the “Segment Results” section for additional information.

Other income increased $50 million in the nine-month period of 2019. The increase was mainly driven by trading activities not directly related to our physical business. See Note 12—Derivatives and Financial Instruments, for additional information associated with our commodity derivatives.

Impairments increased $852 million and $849 million in the third quarter and nine-month period of 2019, respectively. The increase in both periods was mainly driven by an $853 million before-tax impairment associated with our investment in DCP Midstream. See Note 6—Investments, Loans and Long-Term Receivables, and Note 13—Fair Value Measurements, for additional information associated with this impairment.

Interest and debt expense decreased 13% and 10% in the third quarter and nine-month period of 2019, respectively. The decrease in both periods was primarily attributable to higher capitalized interest associated with capital projects under development in our Midstream segment.

Income tax expense decreased 63% and 44% in the third quarter and nine-month period of 2019, respectively. The decrease in both periods was primarily due to lower income before income taxes and the impact of our foreign operations. See Note 20—Income Taxes, in the Notes to Consolidated Financial Statements, for information regarding our effective income tax rates.

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Segment Results

Midstream

	Three Months Ended September 30				Nine Months Ended September 30
	2019			2018	2019		2018
	Millions of Dollars
Income (Loss) Before Income Taxes
Transportation	$	248		209	696		536
NGL and Other	169			46	402		185
DCP Midstream	(877		)	29	(819	)	81
Total Midstream	$	(460	)	284	279		802

	Thousands of Barrels Daily
Transportation Volumes
Pipelines*	3,443	3,517	3,346	3,378
Terminals	3,381	3,179	3,236	3,021
Operating Statistics
NGL fractionated**	203	227	223	213
NGL production***	409	426	420	412

* Pipelines represent the sum of volumes transported through each separately tariffed consolidated pipeline segment. Prior-period volumes have been recast to exclude our share of equity volumes from Yellowstone Pipe Line Company and Lake Charles Pipe Line Company.

** Excludes DCP Midstream.

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

	Dollars Per Gallon
Weighted-Average NGL Price*
DCP Midstream	$	0.44	0.87	0.52	0.78
* Based on index prices from the Mont Belvieu market hub, which are weighted by NGL component.

The Midstream segment provides crude oil and refined petroleum product transportation, terminaling and processing services, as well as natural gas and NGL transportation, storage, 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 its MLP, DCP Midstream, LP (DCP Partners).

Pre-tax income (loss) from the Midstream segment decreased $744 million in the third quarter of 2019 and $523 million in the nine-month period of 2019.

Pre-tax income from our Transportation business increased $39 million in the third quarter of 2019 and $160 million in the nine-month period of 2019. The increased results in both periods were mainly driven by higher volumes and pipeline tariffs from our portfolio of consolidated and joint venture assets. In addition, the increase in the nine-month period of 2019 also reflected lower maintenance cost.

Pre-tax income from our NGL and Other business increased $123 million in the third quarter of 2019 and $217 million in the nine-month period of 2019. The increased results in both periods were mainly due to improved margins and volumes, primarily at the Sweeny Hub, and favorable impacts from our trading activities associated with NGL inventory management, as well as the absence of a contingency accrual recorded in the third quarter of 2018. In addition, the increase in the nine-month period of 2019 also reflected higher equity earnings from certain pipeline affiliates driven by increased volumes.

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Pre-tax income (loss) from our investment in DCP Midstream decreased $906 million in the third quarter of 2019 and $900 million in the nine-month period of 2019. The decrease in both periods was mainly driven by $900 million of impairments related to our investment in DCP Midstream. 

In September 2019, DCP Partners performed goodwill and other asset impairment assessments based on internal discounted cash flow models that reflect various observable and non-observable factors, such as prices, volumes, expenses and discount rates. As a result of these assessments, DCP Partners recorded goodwill and other asset impairments that reduced our equity earnings by $47 million, included in the “Equity in earnings of affiliates” line on our consolidated statement of income.

The fair value of our investment in DCP Midstream depends on the market value of DCP Midstream’s general partner interest in DCP Partners and the market value of DCP Partners’ common units.  At June 30, 2019, we estimated the fair value of our investment in DCP Midstream was below our book value, but we believed the condition was temporary.  The fair value of our investment in DCP Midstream further deteriorated in the third quarter as the market value of DCP Midstream’s general partner interest in DCP Partners and the market value of DCP Partners’ common units declined further.  We concluded the decline in fair value was no longer temporary due to the duration and magnitude of the decline. Accordingly, we recorded an $853 million impairment in the third quarter of 2019. The impairment is included in the “Impairments” line on our consolidated statement of income and results in our investment in DCP Midstream having a book value of $1,358 million at September 30, 2019.

The majority of the difference between the book value of our investment in DCP Midstream and our 50% share of the net assets reported by DCP Midstream will be amortized on a straight-line basis over a 22-year estimated useful life as an increase to equity earnings. See Note 6—Investments, Loans and Long-Term Receivables, and Note 13—Fair Value Measurements, for additional information on our investment in DCP Midstream.

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 September 30			Nine Months Ended September 30
	2019		2018	2019	2018
	Millions of Dollars
Income Before Income Taxes	$	227	263	729	873

	Millions of Pounds
CPChem Externally Marketed Sales Volumes*
Olefins and Polyolefins	4,990	4,883	14,274	14,048
Specialties, Aromatics and Styrenics	1,322	1,385	3,360	3,993
	6,312	6,268	17,634	18,041
* 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) 97 % 91 97 94

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).

Pre-tax income from the Chemicals segment decreased $36 million in the third quarter of 2019 and $144 million in the nine-month period of 2019. The decrease in both periods included a lower-of-cost-or-market write-down of LIFO-valued inventories, primarily resulting from lower polyethylene prices.  Our portion of the write-down reduced our equity earnings from CPChem by $42 million, pre-tax.  In addition, the decreased results in the nine-month period were due to lower margins, partially offset by higher polyethylene sales volume.

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 September 30					Nine Months Ended September 30
	2019			2018		2019		2018
	Millions of Dollars
Income (Loss) Before Income Taxes
Atlantic Basin/Europe	$	296		209		547		265
Gulf Coast	184			210		288		576
Central Corridor	408			839		1,005		1,632
West Coast	(32		)	(26	)	(199	)	61
Worldwide	$	856		1,232		1,641		2,534

	Dollars Per Barrel
Income (Loss) Before Income Taxes
Atlantic Basin/Europe	$	5.93		4.62		3.83		2.00
Gulf Coast	2.46			3.01		1.32		2.67
Central Corridor	15.26			31.33		13.07		20.60
West Coast	(0.93		)	(0.74	)	(2.03	)	0.59
Worldwide	4.60			6.96		3.07		4.77
Realized Refining Margins*
Atlantic Basin/Europe	$	11.48		11.48		10.17		9.82
Gulf Coast	8.34			9.09		7.42		8.64
Central Corridor	15.99			23.61		14.91		19.26
West Coast	10.11			9.53		8.84		10.25
Worldwide	11.18			13.36		10.06		11.72

* 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.

46

	Thousands of Barrels Daily
	Three Months Ended September 30			Nine Months Ended September 30
Operating Statistics	2019		2018	2019	2018
Refining operations*
Atlantic Basin/Europe
Crude oil capacity	537		537	537	537
Crude oil processed	509		465	485	460
Capacity utilization (percent)	95	%	87	90	86
Refinery production	545		494	527	488
Gulf Coast
Crude oil capacity	764		752	764	752
Crude oil processed	729		656	714	706
Capacity utilization (percent)	95	%	87	93	94
Refinery production	817		765	797	797
Central Corridor
Crude oil capacity	515		493	515	493
Crude oil processed	517		531	495	501
Capacity utilization (percent)	100	%	108	96	102
Refinery production	535		553	515	523
West Coast
Crude oil capacity	364		364	364	364
Crude oil processed	351		354	325	352
Capacity utilization (percent)	97	%	97	89	97
Refinery production	371		381	357	379
Worldwide
Crude oil capacity	2,180		2,146	2,180	2,146
Crude oil processed	2,106		2,006	2,019	2,019
Capacity utilization (percent)	97	%	93	93	94
Refinery production	2,268		2,193	2,196	2,187
* Includes our share of equity affiliates.

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.

Pre-tax income for the Refining segment decreased $376 million in the third quarter of 2019 and $893 million in the nine-month period of 2019, primarily driven by lower realized refining margins.

In the third quarter of 2019, the decrease in realized refining margins was mainly due to lower feedstock advantage, partially offset by favorable inventory impacts and higher secondary product margins.

In the nine-month period of 2019, the decrease in realized refining margins was primarily due to lower feedstock advantage and market crack spreads, partially offset by higher secondary product margins and lower renewable identification number costs.

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

Our worldwide refining crude oil capacity utilization rate was 97% and 93% in the third quarter and nine-month period of 2019, respectively, compared with 93% and 94% in the third quarter and nine-month period of 2018, respectively. The increase in the third quarter of 2019 was primarily due to lower unplanned downtime.

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Marketing and Specialties

	Three Months Ended September 30			Nine Months Ended September 30
	2019		2018	2019	2018
	Millions of Dollars
Income Before Income Taxes
Marketing and Other	$	440	361	872	781
Specialties	58		62	184	187
Total Marketing and Specialties	$	498	423	1,056	968

	Dollars Per Barrel
Income Before Income Taxes
U.S.	$	1.66	1.48	1.14	1.14
International	5.19		4.80	4.10	3.23
Realized Marketing Fuel Margins*
U.S.	$	2.11	1.80	1.59	1.50
International	6.37		6.58	5.42	5.07

* 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. Prior period U.S. realized marketing fuel margins have been revised to exclude the effects of special items on fuel margins.

	Dollars Per Gallon
U.S. Average Wholesale Prices*
Gasoline	$	2.14	2.35	2.11	2.25
Distillates	2.07		2.40	2.10	2.31
* On third-party branded petroleum product sales, excluding excise taxes.

	Thousands of Barrels Daily
Marketing Petroleum Products Sales Volumes
Gasoline	1,222	1,187	1,205	1,163
Distillates	1,099	955	1,041	949
Other	16	17	18	18
Total	2,337	2,159	2,264	2,130

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), as well as power generation operations.

Pre-tax income from the M&S segment increased $75 million in the third quarter of 2019 and $88 million in the nine-month period of 2019. The improved results in the third quarter of 2019 were primarily due to higher U.S. margins, driven by favorable market conditions, as well as higher sales volumes.  The improved results in the nine-month period were mainly driven by higher global margins and sales volumes. In addition, both 2018 periods reflected a benefit related to biodiesel blender’s tax incentives.

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 September 30					Nine Months Ended September 30
	2019			2018		2019		2018
Loss Before Income Taxes
Net interest expense	$	(98	)	(114	)	(311	)	(354	)
Corporate overhead and other	(80		)	(113	)	(282	)	(296	)
Total Corporate and Other	$	(178	)	(227	)	(593	)	(650	)

Net interest consists of interest and financing expense, net of interest income and capitalized interest. Net interest decreased in the third quarter and nine-month period of 2019, mainly due to higher capitalized interest related to capital projects under development in our Midstream segment.

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. Corporate overhead and other expenses decreased in both periods, primarily driven by lower accrued environmental expenses and technology costs. The decrease in the nine-month period of 2019 was partially offset by a one-time income tax benefit recognized by our equity affiliates in 2018 related to U.S. tax reform.

49

CAPITAL RESOURCES AND LIQUIDITY

Financial Indicators

	Millions of Dollars, Except as Indicated
	September 30 2019			December 31 2018
Cash and cash equivalents	$	2,268		3,019
Short-term debt	842			67
Total debt	11,925			11,160
Total equity	27,092			27,153
Percent of total debt to capital*	31		%	29
Percent of floating-rate debt to total debt	9		%	11
* Capital includes total debt and total equity.

To meet our short- and long-term liquidity requirements, we look to a variety of funding sources but rely primarily on cash generated from operating activities. Additionally, Phillips 66 Partners has the ability to fund its growth activities through debt and equity offerings. During the first nine months of 2019, we generated $3.1 billion in cash from operations. Available cash was primarily used to fund capital expenditures and investments of $2.6 billion; repurchase $1.2 billion of our common stock; and pay dividends on our common stock of $1.2 billion. In addition, Phillips 66 Partners received $422 million from its joint venture partners to partially fund the Gray Oak capital project. Phillips 66 Partners also received net proceeds of $773 million from borrowings during the period. During the first nine months of 2019, cash and cash equivalents decreased by $0.8 billion to $2.3 billion.

In addition to cash flows from operating activities, we rely on our commercial paper and credit facility programs, asset sales and our ability to issue debt securities to support our short- and long-term liquidity requirements. We believe current cash and cash equivalents and cash generated by operations, together with access to external sources of funds as described below under “Significant Sources of Capital,” will be sufficient to meet our funding requirements in the near and long term, including our capital spending, dividend payments, defined benefit plan contributions, debt repayments and share repurchases.

Significant Sources of Capital

Operating Activities

During the first nine months of 2019, cash generated by operating activities was $3,114 million, compared with $3,434 million for the first nine months of 2018. The decrease was mainly driven by lower refining margins, partially offset by improved results from our transportation and NGL assets along with working capital impacts. The working capital impacts were primarily driven by lower inventory builds in 2019.

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 impacts 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.

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Equity Affiliate Operating Distributions

Our operating cash flows are also impacted by distribution decisions made by our equity affiliates, including CPChem, DCP Midstream and WRB. During the first nine months of 2019, cash from operations included distributions of $1,638 million from our equity affiliates, compared with $2,057 million during the same period of 2018. The lower distributions from our equity affiliates for the first nine months of 2019 were mainly driven by lower equity earnings. We cannot control the amount of future dividends from equity affiliates; therefore, future dividend payments by these companies are not assured.

Phillips 66 Partners LP

Unit Issuances

During the first nine months of 2019, on a settlement-date basis, Phillips 66 Partners generated net proceeds of $133 million from common units issued under its active continuous offering of common units, or at-the-market (ATM) program.

Debt Issuances and Repayments

On September 6, 2019, Phillips 66 Partners closed on a public offering of $900 million aggregate principal amount of unsecured notes consisting of:

• $300 million aggregate principal amount of 2.450% Senior Notes due December 15, 2024.

• $600 million aggregate principal amount of 3.150% Senior Notes due December 15, 2029.

Interest on each series of senior notes is payable semi-annually in arrears on June 15 and December 15 of each year, commencing on June 15, 2020. On September 13, 2019, Phillips 66 Partners used a portion of the net proceeds to repay the $400 million outstanding principal balance of its term loans due March 2020, and on October 15, 2019, Phillips 66 Partners used a portion of the net proceeds to repay the $300 million outstanding principal balance of its 2.646% Senior Notes due February 2020.

Revolving Credit Agreement Amendment and Restatement

On July 30, 2019, Phillips 66 Partners amended and restated its revolving credit agreement. The agreement extended the scheduled maturity from October 3, 2021, to July 30, 2024. No other material amendments were made to the agreement, and the overall capacity remains at $750 million with an option to increase the overall capacity to $1 billion, subject to certain conditions.

At September 30, 2019, no amount had been directly drawn under Phillips 66 Partners’ revolving credit facility, compared with borrowings of $125 million at December 31, 2018.

Transfers of Equity Interests

In December 2018, a third party exercised an option to acquire a 35% interest in Gray Oak Holdings LLC (Holdings LLC), a consolidated subsidiary of Phillips 66 Partners. This transfer did not qualify as a sale under GAAP because of certain restrictions placed on the acquirer. The contributions received by Holdings LLC from the third party to cover capital calls from Gray Oak Pipeline, LLC (Gray Oak) are presented as a long-term obligation on our consolidated balance sheet and financing cash inflows on our consolidated statement of cash flows until construction of the Gray Oak Pipeline is fully completed and these restrictions expire. During the first nine months of 2019, the third party contributed an aggregate of $341 million into Holdings LLC, which Holdings LLC used to fund its portion of Gray Oak’s cash calls. See Note 21—Phillips 66 Partners LP, in the Notes to Consolidated Financial Statements, for additional information regarding this transaction.

In February 2019, Holdings LLC sold a 10% ownership interest in Gray Oak to a third party that exercised a purchase option, for proceeds of $81 million. The proceeds received from this sale are presented as an investing cash inflow on our consolidated statement of cash flows. See Note 6—Investments, Loans and Long-Term Receivables, in the Notes to Consolidated Financial Statements, for additional information regarding this transaction.

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Restructuring Transaction

On August 1, 2019, Phillips 66 Partners completed a restructuring transaction to eliminate the IDRs held by us and convert our 2% economic general partner interest into a non-economic general partner interest in exchange for 101 million Phillips 66 Partners’ common units.  As a result of the restructuring transaction, the balance of “Noncontrolling interests” on our consolidated balance sheet decreased $373 million, with a $275 million increase to “Capital in excess of par,” a $91 million increase in “Deferred income taxes” and $7 million of transaction costs. No distributions will be made on the general partner interest after August 1, 2019. At September 30, 2019, we owned 170 million Phillips 66 Partners’ common units, representing 75% of Phillips 66 Partners’ outstanding common units.

Revolving Credit Facilities and Commercial Paper

On July 30, 2019, we amended and restated our revolving credit agreement. The agreement extended the scheduled maturity from October 3, 2021, to July 30, 2024. No other material amendments were made to the agreement, and the overall capacity remains at $5 billion with an option to increase the overall capacity to $6 billion, subject to certain conditions. 

At September 30, 2019, no amount had been directly drawn under our $5 billion revolving credit facility or our $5 billion commercial paper program supported by our revolving credit facility. In addition, at September 30, 2019, Phillips 66 Partners had no borrowings outstanding under its $750 million revolving credit facility. As a result, we had approximately $5.7 billion of total committed capacity available under our revolving credit facilities at September 30, 2019.

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Off-Balance Sheet Arrangements

Contingent Equity Affiliate Contributions

In March 2019, a wholly owned subsidiary of Dakota Access, LLC (Dakota Access) closed an offering of $2,500 million aggregate principal amount of unsecured senior notes. The net proceeds from the issuance of these notes were used to repay amounts outstanding under existing credit facilities of Dakota Access and Energy Transfer Crude Oil Company, LLC (ETCO). 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, if Dakota Access receives an unfavorable court ruling related to certain disputed construction permits and Dakota Access determines that an equity contribution trigger event has occurred, the venturers may be severally required to make proportionate equity contributions to Dakota Access and ETCO up to an aggregate maximum of approximately $2,525 million. Phillips 66 Partners’ share of the maximum potential equity contributions under the CECU is approximately $631 million.

Lease Residual Value and Joint Venture Obligation Guarantees

Under the operating lease agreement on our headquarters facility in Houston, Texas, we have a residual value guarantee with a maximum future exposure of $554 million at September 30, 2019. The operating lease term ends in June 2021 and provides us the option, at the end of the lease term, to request to renew the lease, purchase the facility or assist the lessor in marketing it for resale. We also have residual value guarantees associated with railcar and airplane leases with maximum future exposures totaling $344 million at September 30, 2019, which have remaining terms of up to five years.

In June 2019, Phillips 66 Partners issued a guarantee for 42.25% of Gray Oak’s third-party term loan facility. See Note 6—Investments, Loans and Long-Term Receivables, for additional information.

In addition, at September 30, 2019, we had other guarantees outstanding for our portion of certain joint venture debt obligations, which have remaining terms of up to six years. The maximum potential amount of future payments to third parties under these guarantees was approximately $135 million. Payment would be required if a joint venture defaults on its obligations.

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 September 30, 2019, and December 31, 2018, was $11,925 million and $11,160 million, respectively. Our total debt-to-capital ratio was 31% and 29% at September 30, 2019, and December 31, 2018, respectively.

Dividends

On July 10, 2019, our Board of Directors declared a quarterly cash dividend of $0.90 per common share. The dividend was paid on September 3, 2019, to shareholders of record at the close of business on August 20, 2019. On October 4, 2019, our Board of Directors declared a quarterly cash dividend of $0.90 per common share. This dividend is payable on December 2, 2019, to shareholders of record at the close of business on November 18, 2019.

Share Repurchase Programs

On October 4, 2019, our Board of Directors approved a new share repurchase program that authorizes us to repurchase up to $3 billion of our common stock, bringing the total amount of share repurchases authorized by our Board of Directors since July 2012 to an aggregate of $15 billion. The share repurchases are expected to be funded primarily through available cash. The shares will be repurchased from time to time in the open market at our discretion, subject to market conditions and other factors, and in accordance with applicable regulatory requirements. Since the inception of our share repurchase programs in 2012 through September 30, 2019, we have repurchased 150,270,786 shares at an aggregate cost of $11.6 billion. Shares of stock repurchased are held as treasury shares.

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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 certain Gray Oak joint venture partners.

	Millions of Dollars
	Nine Months Ended September 30
	2019		2018
Capital Expenditures and Investments
Midstream	$	1,724	978
Chemicals	—		—
Refining	645		525
Marketing and Specialties	76		65
Corporate and Other	150		77
Total Capital Expenditures and Investments	$	2,595	1,645
Less: capital spending funded by certain Gray Oak joint venture partners*	422		—
Adjusted Capital Spending	$	2,173	1,645
Selected Equity Affiliates**
DCP Midstream	$	355	342
CPChem	252		284
WRB	135		116
	$	742	742

* Included in the Midstream segment.

** Our share of joint venture’s self-funded capital spending.

Midstream

During the first nine months of 2019, capital spending in our Midstream segment included continued development of additional Gulf Coast fractionation capacity, construction activities related to increasing storage capacity at our crude oil and refined petroleum products terminal located near Beaumont, Texas, as well as other return, reliability and maintenance projects in our Transportation and NGL businesses. Phillips 66 Partners progressed several major capital projects, including the Gray Oak Pipeline and related ventures, a new ethane pipeline from Clemens Caverns to Gregory, Texas, and capacity expansion on the Sweeny to Pasadena refined petroleum products pipeline. Phillips 66 Partners also completed a new isomerization unit at the Lake Charles Refinery and the eastern leg of its 40% owned Bayou Bridge Pipeline.

In June 2019, we formed a 50/50 joint venture, Liberty Pipeline LLC, to construct the Liberty Pipeline, which will provide crude oil transportation from the Rockies and Bakken production areas to Cushing, Oklahoma. We will lead project construction on behalf of the joint venture and will operate the pipeline. The estimated project cost, on a gross basis, is approximately $1.6 billion. In addition, in June 2019, we formed a 50/50 joint venture, Red Oak Pipeline LLC, to construct the Red Oak Pipeline System, which will provide crude oil transportation from Cushing and the Permian Basin to multiple destinations along the Texas Gulf Coast, including Corpus Christi, Ingleside, Houston and Beaumont. Our co-venturer will lead project construction on behalf of the joint venture and we will operate the pipeline. The estimated project spending, on a gross basis, is approximately $2.5 billion. Initial services for both projects are targeted for the first half of 2021.

During the first nine months of 2019, DCP Midstream had a self-funded capital program. During this period, on a 100% basis, DCP Midstream’s capital expenditures and investments were $710 million. The capital spending was primarily for expansion projects, including construction of the O’Connor 2 plant and investments in the Gulf Coast Express joint venture pipeline, as well as maintenance capital expenditures for existing assets. We expect DCP Midstream to continue self-funding its capital program for the remainder of 2019.

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Chemicals

During the first nine months of 2019, CPChem had a self-funded capital program. During this period, on a 100% basis, CPChem’s capital expenditures and investments were $503 million. The capital spending was primarily for the continued development of its second U.S. Gulf Coast (USGC) Petrochemicals Project and debottlenecking projects on existing assets. In June 2019, CPChem signed an agreement with a co-venturer to jointly pursue the development of a second USGC Petrochemicals Project, and an agreement with a co-venturer to jointly pursue the development of a petrochemical complex in Qatar. We expect CPChem to continue self-funding its capital program for the remainder of 2019.

Refining

Capital spending for the Refining segment during the first nine months of 2019 was primarily for refinery upgrade projects to increase accessibility of advantaged crudes and improve product yields, improvements to the operating integrity of key processing units and safety-related projects. Our equity affiliates in the Refining segment had self-funded capital programs during the first nine months of 2019 and we expect them to continue self-funding their capital programs for the remainder of 2019.

Major construction activities included:

• Installation of facilities to improve product value at the Sweeny Refinery.

• Installation of facilities to produce biofuels at the Humber Refinery.

A facility installed at the Borger Refinery to increase distillate yields started up in the third quarter of 2019.

Marketing and Specialties

Capital spending for the M&S segment during the first nine months of 2019 was primarily for the acquisition, development and improvement of our international retail sites, and safety and reliability projects at our lubricants and power generation facilities.

Corporate and Other

Capital spending for Corporate and Other during the first nine months of 2019 was primarily for information technology and facilities.

2019 Budget Update

We are forecasting our total 2019 capital spending to range from $3.7 billion to $4.0 billion, including $1.2 billion for Phillips 66 Partners.  Excluding $0.4 billion funded by our Gray Oak joint venture partners, we expect our adjusted capital spending to range from $3.3 billion to $3.6 billion.  The increase in our expected capital spending reflects higher spending on Midstream growth projects, domestic retail marketing and other planned expenditures across our portfolio.

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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 less than certain.

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 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. 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 2018 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 September 30, 2019, and December 31, 2018, we had been notified of potential liability under CERCLA and comparable state laws at 27 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 material costs and liabilities will not be incurred. 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 2018 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.

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) purchase 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 “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 margins.

The GAAP performance measure most directly comparable to realized refining margin per barrel is the Refining segment’s “income 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 before income taxes, such as general and administrative expenses. It also includes our proportional share of our 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 income 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 September 30, 2019
Income (loss) before income taxes	$	296		184		408		(32	)	856
Plus:
Taxes other than income taxes	12			23		10		23		68
Depreciation and amortization	49			66		34		66		215
Selling, general and administrative expenses	10			7		6		8		31
Operating expenses	208			345		125		282		960
Equity in (earnings) losses of affiliates	3			(1	)	(69	)	—		(67	)
Other segment (income) expense, net	(24		)	1		(3	)	1		(25	)
Proportional share of refining gross margins contributed by equity affiliates	19			—		269		—		288
Realized refining margins	$	573		625		780		348		2,326
Total processed inputs (thousands of barrels)	49,895			74,936		26,740		34,498		186,069
Adjusted total processed inputs (thousands of barrels)*	49,895			74,936		48,853		34,498		208,182
Income (loss) before income taxes per barrel (dollars per barrel)**	$	5.93		2.46		15.26		(0.93	)	4.60
Realized refining margins (dollars per barrel)***	11.48			8.34		15.99		10.11		11.18
Three Months Ended September 30, 2018
Income (loss) before income taxes	$	209		210		839		(26	)	1,232
Plus:
Taxes other than income taxes	13			23		10		26		72
Depreciation and amortization	50			69		34		60		213
Selling, general and administrative expenses	16			13		7		11		47
Operating expenses	217			317		124		264		922
Equity in (earnings) losses of affiliates	2			1		(300	)	—		(297	)
Other segment (income) expense, net	(3		)	1		4		—		2
Proportional share of refining gross margins contributed by equity affiliates	16			—		472		—		488
Special items:
Certain tax impacts	(1		)	—		—		—		(1	)
Realized refining margins	$	519		634		1,190		335		2,678
Total processed inputs (thousands of barrels)	45,233			69,745		26,778		35,132		176,888
Adjusted total processed inputs (thousands of barrels)*	45,233			69,745		50,410		35,132		200,520
Income (loss) before income taxes per barrel (dollars per barrel)**	$	4.62		3.01		31.33		(0.74	)	6.96
Realized refining margins (dollars per barrel)***	11.48			9.09		23.61		9.53		13.36
* Adjusted total processed inputs include our proportional share of processed inputs of an equity affiliate.
** Income (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 due to rounding.

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	Millions of Dollars, Except as Indicated
Realized Refining Margins	Atlantic Basin/ Europe			Gulf Coast		Central Corridor		West Coast		Worldwide
Nine Months Ended September 30, 2019
Income (loss) before income taxes	$	547		288		1,005		(199	)	1,641
Plus:
Taxes other than income taxes	38			62		33		68		201
Depreciation and amortization	148			201		101		191		641
Selling, general and administrative expenses	27			13		14		21		75
Operating expenses	642			1,051		404		780		2,877
Equity in (earnings) losses of affiliates	9			1		(286	)	—		(276	)
Other segment (income) expense, net	(14		)	(3	)	(1	)	4		(14	)
Proportional share of refining gross margins contributed by equity affiliates	55			—		834		—		889
Special items:
Pending claims and settlements	—			—		(21	)	—		(21	)
Realized refining margins	$	1,452		1,613		2,083		865		6,013
Total processed inputs (thousands of barrels)	142,749			217,556		76,877		97,898		535,080
Adjusted total processed inputs (thousands of barrels)*	142,749			217,556		139,681		97,898		597,884
Income (loss) before income taxes per barrel (dollars per barrel)**	$	3.83		1.32		13.07		(2.03	)	3.07
Realized refining margins (dollars per barrel)***	10.17			7.42		14.91		8.84		10.06
* Adjusted total processed inputs include our proportional share of processed inputs of an equity affiliate.
** Income (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 due to rounding.

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	Millions of Dollars, Except as Indicated
Realized Refining Margins	Atlantic Basin/ Europe			Gulf Coast	Central Corridor		West Coast		Worldwide
Nine Months Ended September 30, 2018
Income before income taxes	$	265		576	1,632		61		2,534
Plus:
Taxes other than income taxes	43			71	31		76		221
Depreciation, amortization and impairments	152			199	101		178		630
Selling, general and administrative expenses	44			36	21		34		135
Operating expenses	727			975	356		722		2,780
Equity in (earnings) losses of affiliates	7			5	(459	)	—		(447	)
Other segment (income) expense, net	(10		)	3	(8	)	(11	)	(26	)
Proportional share of refining gross margins contributed by equity affiliates	73			—	1,051		—		1,124
Special items:
Certain tax impacts	(1		)	—	—		—		(1	)
Realized refining margins	$	1,300		1,865	2,725		1,060		6,950
Total processed inputs (thousands of barrels)	132,429			215,827	79,223		103,378		530,857
Adjusted total processed inputs (thousands of barrels)*	132,429			215,827	141,522		103,378		593,156
Income before income taxes per barrel (dollars per barrel)**	$	2.00		2.67	20.60		0.59		4.77
Realized refining margins (dollars per barrel)***	9.82			8.64	19.26		10.25		11.72
* Adjusted total processed inputs include our proportional share of processed inputs of an equity affiliate.
** Income 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 due to rounding.

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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) purchase 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 September 30, 2019					Three Months Ended September 30, 2018
	U.S.			International		U.S.		International
Realized Marketing Fuel Margins
Income before income taxes	$	312		139		256		122
Plus:
Taxes other than income taxes	3			2		3		1
Depreciation and amortization	2			16		3		17
Selling, general and administrative expenses	184			61		201		66
Equity in earnings of affiliates	(3		)	(27	)	(3	)	(22	)
Other operating revenues*	(101		)	(10	)	(104	)	(7	)
Other segment expense, net	—			1		—		—
Special items:
Certain tax impacts	—			—		(44	)	—
Marketing margins	397			182		312		177
Less: margin for non-fuel related sales	—			11		—		10
Realized marketing fuel margins**	$	397		171		312		167
Total fuel sales volumes (thousands of barrels)	188,172			26,796		173,072		25,441
Income before income taxes per barrel (dollars per barrel)	$	1.66		5.19		1.48		4.80
Realized marketing fuel margins (dollars per barrel)***	2.11			6.37		1.80		6.58
* Includes other non-fuel revenues.
** Prior period U.S. realized marketing fuel margins have been revised to exclude the effects of special items on fuel margins.
*** 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 due to rounding.

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	Millions of Dollars, Except as Indicated
	Nine Months Ended September 30, 2019					Nine Months Ended September 30, 2018
	U.S.			International		U.S.		International
Realized Marketing Fuel Margins
Income before income taxes	$	613		326		575		241
Plus:
Taxes other than income taxes	8			5		(4	)	1
Depreciation and amortization	7			48		10		53
Selling, general and administrative expenses	522			184		570		207
Equity in earnings of affiliates	(7		)	(74	)	(7	)	(65	)
Other operating revenues*	(286		)	(25	)	(286	)	(20	)
Other segment income, net	—			—		—		(3	)
Special items:
Certain tax impacts	—			—		(100	)	—
Marketing margins	857			464		758		414
Less: margin for non-fuel related sales	—			33		—		36
Realized marketing fuel margins**	$	857		431		758		378
Total fuel sales volumes (thousands of barrels)	538,718			79,429		506,577		74,692
Income before income taxes per barrel (dollars per barrel)	$	1.14		4.10		1.14		3.23
Realized marketing fuel margins (dollars per barrel)***	1.59			5.42		1.50		5.07
* Includes other non-fuel revenues.
** Prior period U.S. realized marketing fuel margins have been revised to exclude the effects of special items on fuel margins.
*** 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 due to rounding.

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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 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.

We based the forward-looking statements on our current expectations, estimates and projections about us and the industries in which we 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:

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

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

• 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.

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

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

• 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, civil unrest, political events, terrorism or cyber attacks.

• International monetary conditions and exchange controls.

• Substantial investment or reduced demand for products as a result of existing or future environmental rules and regulations.

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

• General domestic and international economic and political developments including: armed hostilities; expropriation of assets; changes in governmental policies relating to NGL, crude oil, natural gas or refined petroleum products pricing, regulation or taxation; and other political, economic or diplomatic developments.

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

• 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.

• Domestic and foreign supplies of crude oil and other feedstocks.

• Domestic and foreign supplies of petrochemicals and refined petroleum products, such as gasoline, diesel, aviation fuel and home heating oil.

• Governmental policies relating to exports of crude oil and natural gas.

• Overcapacity or undercapacity in the midstream, chemicals and refining industries.

• Fluctuations in consumer demand for refined petroleum products.

• The factors generally described in Item 1A.—Risk Factors in our 2018 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 September 30, 2019, did not differ materially from the risks disclosed under Item 7A of our 2018 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 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 September 30, 2019, 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 September 30, 2019.

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 September 30, 2019, 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 U.S. Securities and Exchange Commission (SEC) Regulation S-K requires disclosure of certain environmental matters when a governmental authority is a party to the proceedings, or such proceedings are known to be contemplated, unless we reasonably believe that the matter will result in no monetary sanctions, or in monetary sanctions, exclusive of interest and costs, of less than $100,000. There were no such new matters that arose during the third quarter of 2019. In addition, there were no material developments that occurred with respect to matters previously reported in our 2018 Annual Report on Form 10-K for the quarterly period ended December 31, 2018, or for any matter reported in our Quarterly Report on Form 10-Q for the quarterly period ended March 31, 2019, or June 30, 2019. We do not currently believe that the eventual outcome of any matters previously 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 U.S. Environmental Protection Agency (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 SEC reporting threshold described above 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.

Item 1A.   RISK FACTORS

There were no material changes from the risk factors disclosed in Item 1A of our 2018 Annual Report on Form 10-K.

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

Issuer Purchases of Equity Securities

					Millions of Dollars
Period	Total Number of Shares Purchased*	Average Price Paid per Share		Total Number of Shares Purchased as Part of Publicly Announced Plans or Programs**	Approximate Dollar Value of Shares that May Yet Be Purchased Under the Plans or Programs
July 1-31, 2019	1,207,472	$	98.74	1,207,472	$	689
August 1-31, 2019	1,804,388	98.45		1,804,388	511
September 1-30, 2019	1,394,841	101.82		1,394,841	369
Total	4,406,701	$	99.59	4,406,701
* Includes repurchase of shares of common stock from company employees in connection with the company’s broad-based employee incentive plans, when applicable.
** As of September 30, 2019, our Board of Directors has authorized repurchases totaling up to $12 billion of our outstanding common stock since the inception of our share repurchase program in July 2012. The authorizations do not have expiration dates. On October 4, 2019, our Board of Directors approved a new share repurchase program that authorizes us to repurchase up to $3 billion of our common stock, bringing the total amount of share repurchases authorized by our Board of Directors since July 2012 to an aggregate of $15 billion. The share repurchases are expected to be funded primarily through available cash. The shares under these authorizations will be repurchased from time to time in the open market at the company’s discretion, subject to market conditions and other factors, and in accordance with applicable regulatory requirements. We are not obligated to acquire any particular amount of common stock and may commence, suspend or discontinue purchases at any time or from time to time without prior notice. Shares of stock repurchased are held as treasury shares.

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Item 6. EXHIBITS

		Incorporate by Reference
Exhibit Number	Exhibit Description	Form	Exhibit Number	Filing Date	SEC File No.
	As permitted by Item 601(b)(4)(iii)(A) of Regulation S-K, the company has not filed with this Quarterly Report on Form 10-Q certain instruments defining the rights of holders of long-term debt of the company and its subsidiaries because the total amount of securities authorized thereunder does not exceed 10% of the total assets of the company and its subsidiaries on a consolidated basis. The company agrees to furnish a copy of such agreements to the Commission upon request.
10.1	Partnership Interests Restructuring Agreement, dated as of July 24, 2019, by and between Phillips 66 Partners LP and Phillips 66 Partners GP LLC	8-K	10.1	7/26/2019	001-35349
10.2	Amended and Restated Credit Agreement dated as of July 30, 2019, among Phillips 66, Phillips 66 Company, the lenders party thereto, and JPMorgan Chase Bank, N.A., as administrative agent	8-K	10.1	8/1/2019	001-35349
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.

67

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: October 25, 2019

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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: October 25, 2019

/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: October 25, 2019

/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 September 30, 2019, 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: October 25, 2019

/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

Inventories (Tables)

9 Months Ended

Sep. 30, 2019

Inventory Disclosure [Abstract]

Summary of Inventories

	Millions of Dollars
	September 30 2019		December 31 2018
Crude oil and petroleum products	$	5,208	3,238
Materials and supplies	313		305
	$	5,521	3,543

XML

Earnings Per Share (Policies)

9 Months Ended

Sep. 30, 2019

Earnings Per Share [Abstract]

Earnings Per Share

The numerator of basic earnings per share (EPS) is net income attributable to Phillips 66, reduced by 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 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 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.

XML

Sales and Other Operating Revenues

9 Months Ended

Sep. 30, 2019

Revenue from Contract with Customer [Abstract]

Sales and Other Operating Revenues

Note 3—Sales and Other Operating Revenues

Disaggregated Revenues

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

	Millions of Dollars
	Three Months Ended September 30			Nine Months Ended September 30
	2019		2018	2019	2018
Product Line and Services
Refined petroleum products	$	22,373	23,184	64,088	64,975
Crude oil resales	3,511		4,747	10,162	12,316
Natural gas liquids (NGL)	1,025		1,782	3,508	4,751
Services and other*	309		75	410	321
Consolidated sales and other operating revenues	$	27,218	29,788	78,168	82,363
Geographic Location**
United States	$	21,160	23,068	60,602	64,481
United Kingdom	2,375		3,085	7,318	7,623
Germany	1,025		1,135	3,074	3,174
Other foreign countries	2,658		2,500	7,174	7,085
Consolidated sales and other operating revenues	$	27,218	29,788	78,168	82,363
* 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 September 30, 2019, and December 31, 2018, receivables from contracts with customers were $5,585 million and $4,993 million, respectively. Significant non-customer 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 September 30, 2019, and December 31, 2018, our asset balances related to such payments were $311 million and $248 million, respectively.

Our contract-related liabilities represent advances received from our customers prior to product or service delivery. At September 30, 2019, and December 31, 2018, contract liabilities were $218 million and $99 million, respectively.

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 an unsatisfied performance obligation. We also have certain contracts in our Midstream segment that include minimum volume commitments with fixed pricing, most of which expire by 2021. At September 30, 2019, the remaining performance obligations related to these minimum volume commitment contracts were not material.

XML

Properties, Plants and Equipment

9 Months Ended

Sep. 30, 2019

Property, Plant and Equipment [Abstract]

Properties, Plants and Equipment

Note 7—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
	September 30, 2019				December 31, 2018
	Gross PP&E		Accum. D&A	Net PP&E	Gross PP&E	Accum. D&A	Net PP&E
Midstream	$	10,759	2,316	8,443	9,663	2,100	7,563
Chemicals	—		—	—	—	—	—
Refining	23,189		10,084	13,105	22,640	9,531	13,109
Marketing and Specialties	1,656		927	729	1,671	926	745
Corporate and Other	1,309		632	677	1,223	622	601
	$	36,913	13,959	22,954	35,197	13,179	22,018

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Contingencies and Commitments

9 Months Ended

Sep. 30, 2019

Commitments and Contingencies Disclosure [Abstract]

Contingencies and Commitments

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 less than certain.

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 U.S. Environmental Protection Agency (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 at 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 September 30, 2019, and December 31, 2018, our total environmental accrual was $447 million for both periods. 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 not associated with financing arrangements resulting from throughput agreements with pipeline and processing companies. 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 September 30, 2019, we had performance obligations secured by letters of credit and bank guarantees of $644 million related to various purchase and other commitments incident to the ordinary conduct of business.

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Consolidated Statement of Changes in Equity (Parenthetical) - $ / shares	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Statement of Stockholders' Equity [Abstract]
Dividends paid per common stock (in usd per share)	$ 0.90	$ 0.8	$ 2.60	$ 2.3

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Pension and Postretirement Plans (Narrative) (Details) - Pension Benefits $ in Millions	9 Months Ended
	Sep. 30, 2019 USD ($)
United States
Employee Benefit Plans (Textual) [Abstract]
Company contributions to plans	$ 50
Additional contributions expected to be made during remainder of fiscal year	8
Int’l.
Employee Benefit Plans (Textual) [Abstract]
Company contributions to plans	21
Additional contributions expected to be made during remainder of fiscal year	$ 7

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Condensed Consolidating Financial Information (Statement of Income) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Revenues and Other Income
Sales and other operating revenues	$ 27,218	$ 29,788	$ 78,168	$ 82,363
Equity in earnings of affiliates	499	779	1,663	1,946
Net gain on dispositions	18	1	19	18
Other income	36	24	97	47
Total Revenues and Other Income	27,771	30,592	79,947	84,374
Costs and Expenses
Purchased crude oil and products	23,806	26,385	69,415	73,270
Operating expenses	1,206	1,206	3,678	3,595
Selling, general and administrative expenses	416	440	1,190	1,258
Depreciation and amortization	336	346	1,001	1,019
Impairments	853	1	856	7
Taxes other than income taxes	105	109	330	328
Accretion on discounted liabilities	6	5	17	17
Interest and debt expense	109	125	343	383
Foreign currency transaction gains (losses)	(9)	0	5	(30)
Total Costs and Expenses	26,828	28,617	76,835	79,847
Income before income taxes	943	1,975	3,112	4,527
Income tax expense (benefit)	150	407	545	970
Net Income	793	1,568	2,567	3,557
Less: net income attributable to noncontrolling interests	81	76	227	202
Net Income Attributable to Phillips 66	712	1,492	2,340	3,355
Comprehensive Income (Loss)	689	1,609	2,477	3,535
Reportable Legal Entities | Phillips 66
Revenues and Other Income
Sales and other operating revenues	0	0	0	0
Equity in earnings of affiliates	781	1,573	2,557	3,600
Net gain on dispositions	0	0	0	0
Other income	0	0	0	0
Total Revenues and Other Income	781	1,573	2,557	3,600
Costs and Expenses
Purchased crude oil and products	0	0	0	0
Operating expenses	0	0	0	0
Selling, general and administrative expenses	1	2	5	6
Depreciation and amortization	0	0	0	0
Impairments	0	0	0	0
Taxes other than income taxes	0	0	0	0
Accretion on discounted liabilities	0	0	0	0
Interest and debt expense	85	100	267	304
Foreign currency transaction gains (losses)	0		0	0
Total Costs and Expenses	86	102	272	310
Income before income taxes	695	1,471	2,285	3,290
Income tax expense (benefit)	(17)	(21)	(55)	(65)
Net Income	712	1,492	2,340	3,355
Less: net income attributable to noncontrolling interests	0	0	0	0
Net Income Attributable to Phillips 66	712	1,492	2,340	3,355
Comprehensive Income (Loss)	608	1,533	2,250	3,333
Reportable Legal Entities | Phillips 66 Company
Revenues and Other Income
Sales and other operating revenues	20,947	22,866	60,060	63,703
Equity in earnings of affiliates	214	1,160	1,645	2,638
Net gain on dispositions	1	0	1	7
Other income	25	23	67	25
Total Revenues and Other Income	22,024	25,140	64,493	68,829
Costs and Expenses
Purchased crude oil and products	19,383	21,656	56,648	59,724
Operating expenses	959	946	2,876	2,771
Selling, general and administrative expenses	324	338	898	966
Depreciation and amortization	230	232	686	691
Impairments	0	1	1	2
Taxes other than income taxes	77	84	242	248
Accretion on discounted liabilities	4	4	13	13
Interest and debt expense	35	36	108	108
Foreign currency transaction gains (losses)	0		0	0
Total Costs and Expenses	21,012	23,297	61,472	64,523
Income before income taxes	1,012	1,843	3,021	4,306
Income tax expense (benefit)	231	270	464	706
Net Income	781	1,573	2,557	3,600
Less: net income attributable to noncontrolling interests	0	0	0	0
Net Income Attributable to Phillips 66	781	1,573	2,557	3,600
Comprehensive Income (Loss)	677	1,614	2,467	3,578
Reportable Legal Entities | All Other Subsidiaries
Revenues and Other Income
Sales and other operating revenues	6,271	6,922	18,108	18,660
Equity in earnings of affiliates	147	186	514	566
Net gain on dispositions	17	1	18	11
Other income	11	1	30	22
Total Revenues and Other Income	10,150	11,481	29,684	30,645
Costs and Expenses
Purchased crude oil and products	8,866	10,095	26,202	27,113
Operating expenses	264	280	861	875
Selling, general and administrative expenses	94	103	295	294
Depreciation and amortization	106	114	315	328
Impairments	853	0	855	5
Taxes other than income taxes	28	25	88	80
Accretion on discounted liabilities	2	1	4	4
Interest and debt expense	67	62	200	187
Foreign currency transaction gains (losses)	(9)		5	(30)
Total Costs and Expenses	10,271	10,680	28,825	28,856
Income before income taxes	(121)	801	859	1,789
Income tax expense (benefit)	(64)	158	136	329
Net Income	(57)	643	723	1,460
Less: net income attributable to noncontrolling interests	81	76	227	202
Net Income Attributable to Phillips 66	(138)	567	496	1,258
Comprehensive Income (Loss)	(170)	635	615	1,357
Consolidating Adjustments
Revenues and Other Income
Sales and other operating revenues	(4,541)	(5,462)	(13,734)	(13,842)
Equity in earnings of affiliates	(643)	(2,140)	(3,053)	(4,858)
Net gain on dispositions	0	0	0	0
Other income	0	0	0	0
Total Revenues and Other Income	(5,184)	(7,602)	(16,787)	(18,700)
Costs and Expenses
Purchased crude oil and products	(4,443)	(5,366)	(13,435)	(13,567)
Operating expenses	(17)	(20)	(59)	(51)
Selling, general and administrative expenses	(3)	(3)	(8)	(8)
Depreciation and amortization	0	0	0	0
Impairments	0	0	0	0
Taxes other than income taxes	0	0	0	0
Accretion on discounted liabilities	0	0	0	0
Interest and debt expense	(78)	(73)	(232)	(216)
Foreign currency transaction gains (losses)	0		0	0
Total Costs and Expenses	(4,541)	(5,462)	(13,734)	(13,842)
Income before income taxes	(643)	(2,140)	(3,053)	(4,858)
Income tax expense (benefit)	0	0	0	0
Net Income	(643)	(2,140)	(3,053)	(4,858)
Less: net income attributable to noncontrolling interests	0	0	0	0
Net Income Attributable to Phillips 66	(643)	(2,140)	(3,053)	(4,858)
Comprehensive Income (Loss)	(426)	(2,173)	(2,855)	(4,733)
Consolidating Adjustments | Phillips 66
Revenues and Other Income
Sales and other operating revenues	0	0	0	0
Consolidating Adjustments | Phillips 66 Company
Revenues and Other Income
Sales and other operating revenues	837	1,091	2,720	2,456
Consolidating Adjustments | All Other Subsidiaries
Revenues and Other Income
Sales and other operating revenues	$ 3,704	$ 4,371	$ 11,014	$ 11,386

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Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended			9 Months Ended
	Sep. 30, 2019	Jun. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Income Tax Disclosure [Abstract]
Effective tax rate, percent	16.00%		21.00%	18.00%	21.00%
Income tax benefit related with one-time deemed repatriation tax on foreign-source earnings		$ 45
Statutory income tax rate	21.00%			21.00%

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Leases (Cash Paid for Leases) (Details) $ in Millions	9 Months Ended
	Sep. 30, 2019 USD ($)
Leases [Abstract]
Operating cash outflows—finance leases	$ 5
Operating cash outflows—operating leases	397
Financing cash outflows—finance leases	$ 18

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Consolidated Balance Sheet - USD ($) $ in Millions	Sep. 30, 2019	Dec. 31, 2018
Assets
Cash and cash equivalents	$ 2,268	$ 3,019
Accounts and notes receivable	7,086
Inventories	5,521	3,543
Prepaid expenses and other current assets	742	474
Total Current Assets	15,617	13,209
Investments and long-term receivables	14,147	14,421
Net properties, plants and equipment	22,954	22,018
Goodwill	3,270	3,270
Intangibles	872	869
Other assets	1,881	515
Total Assets	58,741	54,302
Liabilities
Accounts payable	7,738	6,113
Accounts payable—related parties	635	473
Short-term debt	842	67
Accrued income and other taxes	1,128	1,116
Employee benefit obligations	624	724
Other accruals	1,116	442
Total Current Liabilities	12,083	8,935
Long-term debt	11,083	11,093
Asset retirement obligations and accrued environmental costs	617	624
Deferred income taxes	5,503	5,275
Employee benefit obligations	905	867
Other liabilities and deferred credits	1,458	355
Total Liabilities	31,649	27,149
Equity
Par value	6	6
Capital in excess of par	20,253	19,873
Treasury stock (at cost: 2019—202,693,401 shares; 2018—189,526,331 shares)	(16,261)	(15,023)
Retained earnings	21,730	20,489
Accumulated other comprehensive loss	(871)	(692)
Total Stockholders’ Equity	24,857	24,653
Noncontrolling interests	2,235	2,500
Total Equity	27,092	27,153
Total Liabilities and Equity	58,741	54,302
Third Party
Assets
Accounts and notes receivable	6,097	5,414
Affiliated Entity
Assets
Accounts and notes receivable	$ 989	$ 759

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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	Sep. 30, 2019	Dec. 31, 2018
Assets
Effect of Counterparty Netting	$ (1,346)	$ (1,075)
Effect of Collateral Netting	(5)	(89)
Liabilities
Effect of Counterparty Netting	(1,346)	(1,075)
Effect of Collateral Netting	(70)	0
Difference in Carrying Value and Fair Value	(1,377)	49
Fixed-rate debt, excluding capital leases
Liabilities
Difference in Carrying Value and Fair Value	(1,377)	49
Total Fair Value of Gross Assets & Liabilities
Assets
Assets, fair value disclosure	1,634	1,383
Liabilities
Total liabilities, fair value disclosure gross	14,561	12,027
Total Fair Value of Gross Assets & Liabilities | Floating-rate debt
Liabilities
Debt, fair value gross	1,075	1,200
Total Fair Value of Gross Assets & Liabilities | Fixed-rate debt, excluding capital leases
Liabilities
Debt, fair value gross	12,050	9,727
Total Fair Value of Gross Assets & Liabilities | Rabbi trust assets
Assets
Rabbi trust assets	122	104
Net Carrying Value Presented on the Balance Sheet
Assets
Assets, fair value disclosure	283	219
Liabilities
Total liabilities, fair value disclosure gross	11,768	11,001
Net Carrying Value Presented on the Balance Sheet | Floating-rate debt
Liabilities
Debt, fair value gross	1,075	1,200
Net Carrying Value Presented on the Balance Sheet | Fixed-rate debt, excluding capital leases
Liabilities
Debt, fair value gross	10,673	9,776
Net Carrying Value Presented on the Balance Sheet | Rabbi trust assets
Assets
Rabbi trust assets	122	104
Interest rate derivatives | Total Fair Value of Gross Assets & Liabilities
Assets
Interest rate derivatives	1	15
Interest rate derivatives | Net Carrying Value Presented on the Balance Sheet
Assets
Interest rate derivatives	1	15
Exchange-cleared instruments
Assets
Effect of Counterparty Netting	(1,346)	(1,075)
Effect of Collateral Netting	(5)	(89)
Liabilities
Effect of Counterparty Netting	(1,346)	(1,075)
Effect of Collateral Netting	(70)
Exchange-cleared instruments | Total Fair Value of Gross Assets & Liabilities
Assets
Commodity derivative assets, fair value gross	1,445	1,221
Liabilities
Commodity derivative liabilities, fair value gross	1,417	1,077
Exchange-cleared instruments | Net Carrying Value Presented on the Balance Sheet
Assets
Commodity derivative assets, fair value gross	94	57
Liabilities
Commodity derivative liabilities, fair value gross	1	2
OTC instruments | Total Fair Value of Gross Assets & Liabilities
Assets
Commodity derivative assets, fair value gross	1
Liabilities
Commodity derivative liabilities, fair value gross	3	3
OTC instruments | Net Carrying Value Presented on the Balance Sheet
Assets
Commodity derivative assets, fair value gross	1
Liabilities
Commodity derivative liabilities, fair value gross	3	3
Physical forward contracts | Total Fair Value of Gross Assets & Liabilities
Assets
Commodity derivative assets, fair value gross	65	43
Liabilities
Commodity derivative liabilities, fair value gross	16	20
Physical forward contracts | Net Carrying Value Presented on the Balance Sheet
Assets
Commodity derivative assets, fair value gross	65	43
Liabilities
Commodity derivative liabilities, fair value gross	16	20
Level 1
Assets
Assets, fair value disclosure	910	778
Liabilities
Total liabilities, fair value disclosure gross	748	605
Level 1 | Floating-rate debt
Liabilities
Debt, fair value gross	0	0
Level 1 | Fixed-rate debt, excluding capital leases
Liabilities
Debt, fair value gross	0	0
Level 1 | Rabbi trust assets
Assets
Rabbi trust assets	122	104
Level 1 | Interest rate derivatives
Assets
Interest rate derivatives	0	0
Level 1 | Exchange-cleared instruments
Assets
Commodity derivative assets, fair value gross	788	674
Liabilities
Commodity derivative liabilities, fair value gross	748	605
Level 1 | OTC instruments
Assets
Commodity derivative assets, fair value gross	0
Liabilities
Commodity derivative liabilities, fair value gross	0	0
Level 1 | Physical forward contracts
Assets
Commodity derivative assets, fair value gross	0	0
Liabilities
Commodity derivative liabilities, fair value gross	0	0
Level 2
Assets
Assets, fair value disclosure	723	601
Liabilities
Total liabilities, fair value disclosure gross	13,813	11,422
Level 2 | Floating-rate debt
Liabilities
Debt, fair value gross	1,075	1,200
Level 2 | Fixed-rate debt, excluding capital leases
Liabilities
Debt, fair value gross	12,050	9,727
Level 2 | Rabbi trust assets
Assets
Rabbi trust assets	0	0
Level 2 | Interest rate derivatives
Assets
Interest rate derivatives	1	15
Level 2 | Exchange-cleared instruments
Assets
Commodity derivative assets, fair value gross	657	547
Liabilities
Commodity derivative liabilities, fair value gross	669	472
Level 2 | OTC instruments
Assets
Commodity derivative assets, fair value gross	1
Liabilities
Commodity derivative liabilities, fair value gross	3	3
Level 2 | Physical forward contracts
Assets
Commodity derivative assets, fair value gross	64	39
Liabilities
Commodity derivative liabilities, fair value gross	16	20
Level 3
Assets
Assets, fair value disclosure	1	4
Liabilities
Total liabilities, fair value disclosure gross	0	0
Level 3 | Floating-rate debt
Liabilities
Debt, fair value gross	0	0
Level 3 | Fixed-rate debt, excluding capital leases
Liabilities
Debt, fair value gross	0	0
Level 3 | Rabbi trust assets
Assets
Rabbi trust assets	0	0
Level 3 | Interest rate derivatives
Assets
Interest rate derivatives	0	0
Level 3 | Exchange-cleared instruments
Assets
Commodity derivative assets, fair value gross	0	0
Liabilities
Commodity derivative liabilities, fair value gross	0	0
Level 3 | OTC instruments
Assets
Commodity derivative assets, fair value gross	0
Liabilities
Commodity derivative liabilities, fair value gross	0	0
Level 3 | Physical forward contracts
Assets
Commodity derivative assets, fair value gross	1	4
Liabilities
Commodity derivative liabilities, fair value gross	$ 0	$ 0

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Treasury Stock (Details) - USD ($)		1 Months Ended	9 Months Ended		87 Months Ended
	Feb. 13, 2018	Feb. 28, 2018	Sep. 30, 2019	Sep. 30, 2018	Oct. 04, 2019
Class of Stock [Line Items]
Number of shares authorized to be repurchased (in shares)		35,000,000
Repurchase of common stock		$ 3,280,000,000	$ 1,238,000,000	$ 4,148,000,000
Accelerated share repurchases, initial price paid per share (in usd per share)	$ 93.725
Subsequent Event
Class of Stock [Line Items]
Authorized amount					$ 3,000,000,000
Aggregate authorized amount					$ 15,000,000,000
Cash and cash equivalents
Class of Stock [Line Items]
Accelerated share repurchases, payment		1,880,000,000
Cash and cash equivalents | Commercial Paper
Class of Stock [Line Items]
Accelerated share repurchases, payment		$ 1,400,000,000

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Inventories (Inventory, Net) (Details) - USD ($) $ in Millions	Sep. 30, 2019	Dec. 31, 2018
Summary of inventories
Crude oil and petroleum products	$ 5,208	$ 3,238
Materials and supplies	313	305
Inventories	$ 5,521	$ 3,543

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Investments, Loans and Long-Term Receivables (Dakota Access, LLC and Energy Transfer Crude Oil, Company, LLC) (Details) - USD ($)	Sep. 30, 2019	Sep. 06, 2019	Mar. 31, 2019	Mar. 01, 2018
Dakota Access and ETCO
Schedule of Equity Method Investments [Line Items]
Maximum exposure, undiscounted, co-venturers	$ 2,525,000,000
Senior Notes
Schedule of Equity Method Investments [Line Items]
Debt issued and guaranteed				$ 1,500,000,000
Senior Notes | Dakota Access, LLC
Schedule of Equity Method Investments [Line Items]
Debt issued and guaranteed			$ 2,500,000,000
Variable Interest Entity, Primary Beneficiary | Phillips 66 Partners LP | Dakota Access and ETCO
Schedule of Equity Method Investments [Line Items]
Maximum exposure, undiscounted	$ 631,000,000
Variable Interest Entity, Primary Beneficiary | Senior Notes | Phillips 66 Partners LP
Schedule of Equity Method Investments [Line Items]
Debt issued and guaranteed		$ 900,000,000

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Earnings Per Share (Summary of Earnings Per Share Calculation) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Basic
Net income attributable to Phillips 66	$ 712	$ 1,492	$ 2,340	$ 3,355
Income allocated to participating securities	(2)	(1)	(5)	(4)
Net income available to common stockholders	$ 710	$ 1,491	$ 2,335	$ 3,351
Weighted-average common shares outstanding (in shares)	446,498	463,002	450,836	470,471
Effect of share-based compensation (in shares)	2,507	3,107	2,562	3,289
Weighted-average commons shares outstanding - EPS (in shares)	449,005	466,109	453,398	473,760
Diluted (in usd per share)	$ 1.58	$ 3.20	$ 5.15	$ 7.07
Diluted
Net income attributable to Phillips 66	$ 712	$ 1,492	$ 2,340	$ 3,355
Income allocated to participating securities	(1)	0	(1)	0
Net income available to common stockholders	$ 711	$ 1,492	$ 2,339	$ 3,355
Weighted-average common shares outstanding (in shares)	449,005	466,109	453,398	473,760
Effect of share-based compensation (in shares)	1,996	3,331	2,412	3,460
Weighted-average commons shares outstanding - EPS (in shares)	451,001	469,440	455,810	477,220
Earnings Per Share of Common Stock (in usd per share)	$ 1.58	$ 3.18	$ 5.13	$ 7.03

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Derivatives and Financial Instruments (Summary of Commodity Balance Sheet) (Details) - USD ($) $ in Millions	Sep. 30, 2019	Dec. 31, 2018
Assets
Liabilities	$ (1,346)	$ (1,075)
Net Carrying Value Presented on the Balance Sheet	70	0
Liabilities
Assets	1,346	1,075
Net Carrying Value Presented on the Balance Sheet	(5)	(89)
Not Designated as Hedging Instrument | Commodity
Assets
Effect of Collateral Netting		(89)
Liabilities
Effect of Collateral Netting	65
Total
Assets	1,511	1,264
Liabilities	(1,436)	(1,100)
Effect of Collateral Netting	65
Net Carrying Value Presented on the Balance Sheet	140	75
Not Designated as Hedging Instrument | Commodity | Prepaid expenses and other current assets
Assets
Assets	1,018	1,257
Liabilities	(856)	(1,070)
Effect of Collateral Netting	(5)	(89)
Net Carrying Value Presented on the Balance Sheet	157	98
Not Designated as Hedging Instrument | Commodity | Other assets
Assets
Assets	4	2
Liabilities	(1)	0
Effect of Collateral Netting	0	0
Net Carrying Value Presented on the Balance Sheet	3	2
Not Designated as Hedging Instrument | Commodity | Other accruals
Liabilities
Assets	454	0
Liabilities	(542)	(23)
Effect of Collateral Netting	70	0
Net Carrying Value Presented on the Balance Sheet	(18)	(23)
Total
Effect of Collateral Netting	70	0
Not Designated as Hedging Instrument | Commodity | Other liabilities and deferred credits
Liabilities
Assets	35	5
Liabilities	(37)	(7)
Effect of Collateral Netting	0	0
Net Carrying Value Presented on the Balance Sheet	(2)	(2)
Total
Effect of Collateral Netting	$ 0	$ 0

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Fair Value Measurements (Narrative) (Details) $ in Millions	Sep. 30, 2019 USD ($) d
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset value transferred into Level 1, as measured from the beginning of the reporting period	$ 117
Liability value transferred into Level 1, as measured from the beginning of the reporting period	$ 82
DCP Partners | Fair Value, Nonrecurring | Trading Period | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment, measurement input | d	20

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Segment Disclosures and Related Information (Tables)

9 Months Ended

Sep. 30, 2019

Segment Reporting [Abstract]

Analysis of Results by Operating Segment

	Millions of Dollars
	Three Months Ended September 30					Nine Months Ended September 30
	2019			2018		2019		2018
Sales and Other Operating Revenues*
Midstream
Total sales	$	1,602		2,287		5,208		6,234
Intersegment eliminations	(482		)	(524	)	(1,526	)	(1,555	)
Total Midstream	1,120			1,763		3,682		4,679
Chemicals	1			1		3		4
Refining
Total sales	19,591			21,949		56,839		61,707
Intersegment eliminations	(11,452		)	(12,807	)	(34,008	)	(37,027	)
Total Refining	8,139			9,142		22,831		24,680
Marketing and Specialties
Total sales	18,535			19,332		53,464		54,471
Intersegment eliminations	(584		)	(457	)	(1,833	)	(1,492	)
Total Marketing and Specialties	17,951			18,875		51,631		52,979
Corporate and Other	7			7		21		21
Consolidated sales and other operating revenues	$	27,218		29,788		78,168		82,363
* See Note 3—Sales and Other Operating Revenues, for further details on our disaggregated sales and other operating revenues.
Income (Loss) Before Income Taxes
Midstream	$	(460	)	284		279		802
Chemicals	227			263		729		873
Refining	856			1,232		1,641		2,534
Marketing and Specialties	498			423		1,056		968
Corporate and Other	(178		)	(227	)	(593	)	(650	)
Consolidated income before income taxes	$	943		1,975		3,112		4,527

Reconciliation of Assets from Segment to Consolidated

	Millions of Dollars
	September 30 2019		December 31 2018
Total Assets
Midstream	$	15,209	14,329
Chemicals	6,269		6,235
Refining	25,280		23,230
Marketing and Specialties	8,338		6,572
Corporate and Other	3,645		3,936
Consolidated total assets	$	58,741	54,302

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Leases (Tables)

9 Months Ended

Sep. 30, 2019

Leases [Abstract]

Assets And Liabilities, Lessee

	Millions of Dollars
	September 30, 2019
	Finance Leases		Operating Leases
Right-of-Use Assets
Net properties, plants and equipment	$	177	—
Other assets	—		1,338
Total right-of-use assets	$	177	1,338
Lease Liabilities
Short-term debt	$	13	—
Other accruals	—		468
Long-term debt	153		—
Other liabilities and deferred credits	—		820
Total lease liabilities	$	166	1,288

Finance Lease, Liability

	Millions of Dollars
	Finance Leases			Operating Leases
Remainder of 2019	$	4		126
2020	19			469
2021	18			245
2022	15			157
2023	15			102
Remaining years	135			355
Future minimum lease payments	206			1,454
Amount representing interest or discounts	(40		)	(166	)
Total lease liabilities	$	166		1,288

Operating Lease, Liability

	Millions of Dollars
	Finance Leases			Operating Leases
Remainder of 2019	$	4		126
2020	19			469
2021	18			245
2022	15			157
2023	15			102
Remaining years	135			355
Future minimum lease payments	206			1,454
Amount representing interest or discounts	(40		)	(166	)
Total lease liabilities	$	166		1,288

Lease, Cost

	Millions of Dollars
	Three Months Ended September 30			Nine Months Ended September 30
	2019			2019
Finance lease cost
Amortization of right-of-use assets	$	5		15
Interest on lease liabilities	2			5
Total finance lease cost	7			20
Operating lease cost	126			386
Short-term lease cost	29			93
Variable lease cost	6			18
Sublease income	(4		)	(14	)
Total net lease cost	$	164		503

	Millions of Dollars
Operating cash outflows—finance leases	$	5
Operating cash outflows—operating leases	397
Financing cash outflows—finance leases	18

Weighted-average remaining lease term—finance leases (years)	12.7
Weighted-average remaining lease term—operating leases (years)	5.5
Weighted-average discount rate—finance leases (percent)	3.7	%
Weighted-average discount rate—operating leases (percent)	3.9

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Pension and Postretirement Plans

9 Months Ended

Sep. 30, 2019

Retirement Benefits [Abstract]

Pension and Postretirement Plans

Note 15—Pension and Postretirement Plans

The components of net periodic benefit cost for the three and nine months ended September 30, 2019 and 2018, were as follows:

	Millions of Dollars
	Pension Benefits									Other Benefits
	2019					2018				2019		2018
	U.S.			Int’l.		U.S.		Int’l.
Components of Net Periodic Benefit Cost
Three Months Ended September 30
Service cost	$	32		5		34		5		1		2
Interest cost	27			6		26		6		2		1
Expected return on plan assets	(36		)	(10	)	(42	)	(11	)	—		—
Amortization of prior service credit	—			—		—		—		—		—
Recognized net actuarial loss	14			2		14		5		—		—
Settlements	1			—		49		—		—		—
Net periodic benefit cost*	$	38		3		81		5		3		3
Nine Months Ended September 30
Service cost	$	95		17		102		22		4		5
Interest cost	81			19		78		21		6		5
Expected return on plan assets	(107		)	(33	)	(127	)	(35	)	—		—
Amortization of prior service credit	—			—		—		(1	)	(1	)	(1	)
Recognized net actuarial loss	40			5		44		15		—		—
Settlements	7			—		54		—		—		—
Net periodic benefit cost*	$	116		8		151		22		9		9
* Included in the “Operating expenses” and “Selling, general and administrative expenses” lines on our consolidated statement of income.

During the nine months ended September 30, 2019, we contributed $50 million to our U.S. pension and other postretirement benefit plans and $21 million to our international pension plans. We currently expect to make additional contributions of approximately $8 million to our U.S. pension and other postretirement benefit plans and $7 million to our international pension plans during the remainder of 2019.

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Segment Disclosures and Related Information

9 Months Ended

Sep. 30, 2019

Segment Reporting [Abstract]

Segment Disclosures and Related Information

Note 19—Segment Disclosures and Related Information

During the fourth quarter of 2018, the segment performance measure used by our chief executive officer to assess performance and allocate resources was changed from “net income” to “income before income taxes.”  Prior-period segment information has been recast to conform to the current presentation.

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, 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, as well as power generation operations.

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 September 30					Nine Months Ended September 30
	2019			2018		2019		2018
Sales and Other Operating Revenues*
Midstream
Total sales	$	1,602		2,287		5,208		6,234
Intersegment eliminations	(482		)	(524	)	(1,526	)	(1,555	)
Total Midstream	1,120			1,763		3,682		4,679
Chemicals	1			1		3		4
Refining
Total sales	19,591			21,949		56,839		61,707
Intersegment eliminations	(11,452		)	(12,807	)	(34,008	)	(37,027	)
Total Refining	8,139			9,142		22,831		24,680
Marketing and Specialties
Total sales	18,535			19,332		53,464		54,471
Intersegment eliminations	(584		)	(457	)	(1,833	)	(1,492	)
Total Marketing and Specialties	17,951			18,875		51,631		52,979
Corporate and Other	7			7		21		21
Consolidated sales and other operating revenues	$	27,218		29,788		78,168		82,363
* See Note 3—Sales and Other Operating Revenues, for further details on our disaggregated sales and other operating revenues.
Income (Loss) Before Income Taxes
Midstream	$	(460	)	284		279		802
Chemicals	227			263		729		873
Refining	856			1,232		1,641		2,534
Marketing and Specialties	498			423		1,056		968
Corporate and Other	(178		)	(227	)	(593	)	(650	)
Consolidated income before income taxes	$	943		1,975		3,112		4,527

	Millions of Dollars
	September 30 2019		December 31 2018
Total Assets
Midstream	$	15,209	14,329
Chemicals	6,269		6,235
Refining	25,280		23,230
Marketing and Specialties	8,338		6,572
Corporate and Other	3,645		3,936
Consolidated total assets	$	58,741	54,302

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Derivatives and Financial Instruments (Summary of Outstanding Commodity Derivative Contracts) (Details) - MMBbls	Sep. 30, 2019	Dec. 31, 2018
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Crude oil, refined petroleum products and NGL (millions of barrels)	(35)	(17)

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Condensed Consolidating Financial Information (Cash Flows) (Details) - USD ($) $ in Millions		1 Months Ended	9 Months Ended
		Feb. 28, 2018	Sep. 30, 2019	Sep. 30, 2018
Cash Flows From Operating Activities
Net Cash Provided by (Used in) Operating Activities			$ 3,114	$ 3,434
Cash Flows From Investing Activities
Capital expenditures and investments			(2,595)	(1,645)
Proceeds from asset dispositions	[1]		139	39
Intercompany lending activities			0	0
Advances/loans—related parties			(95)	(1)
Collection of advances/loans—related parties			95	0
Other			24	67
Net Cash Used in Investing Activities			(2,432)	(1,540)
Cash Flows From Financing Activities
Issuance of debt			1,758	1,594
Repayment of debt			(1,004)	(374)
Issuance of common stock			15	39
Repurchase of common stock		$ (3,280)	(1,238)	(4,148)
Dividends paid on common stock			(1,172)	(1,069)
Distributions to noncontrolling interests			(176)	(146)
Net proceeds from issuance of Phillips 66 Partners LP common units			133	114
Other			282	(79)
Net Cash Used in Financing Activities			(1,402)	(4,069)
Effect of Exchange Rate Changes on Cash and Cash Equivalents			(31)	(20)
Net Change in Cash and Cash Equivalents			(751)	(2,195)
Cash and cash equivalents at beginning of period			3,019	3,119
Cash and Cash Equivalents at End of Period			2,268	924
Reportable Legal Entities | Phillips 66
Cash Flows From Operating Activities
Net Cash Provided by (Used in) Operating Activities			(143)	3,094
Cash Flows From Investing Activities
Capital expenditures and investments			0	0
Proceeds from asset dispositions			0	0
Intercompany lending activities			2,587	904
Advances/loans—related parties			0	0
Collection of advances/loans—related parties			0
Other			0	0
Net Cash Used in Investing Activities			2,587	904
Cash Flows From Financing Activities
Issuance of debt			0	1,509
Repayment of debt			0	(250)
Issuance of common stock			15	39
Repurchase of common stock			(1,238)	(4,148)
Dividends paid on common stock			(1,172)	(1,069)
Distributions to noncontrolling interests			0	0
Net proceeds from issuance of Phillips 66 Partners LP common units			0	0
Other			(49)	(79)
Net Cash Used in Financing Activities			(2,444)	(3,998)
Effect of Exchange Rate Changes on Cash and Cash Equivalents			0	0
Net Change in Cash and Cash Equivalents			0	0
Cash and cash equivalents at beginning of period			0	0
Cash and Cash Equivalents at End of Period			0	0
Reportable Legal Entities | Phillips 66 Company
Cash Flows From Operating Activities
Net Cash Provided by (Used in) Operating Activities			1,645	3,070
Cash Flows From Investing Activities
Capital expenditures and investments			(803)	(633)
Proceeds from asset dispositions			352	328
Intercompany lending activities			(2,245)	(510)
Advances/loans—related parties			0	(1)
Collection of advances/loans—related parties			0
Other			(3)	(6)
Net Cash Used in Investing Activities			(2,699)	(822)
Cash Flows From Financing Activities
Issuance of debt			0	0
Repayment of debt			(14)	(9)
Issuance of common stock			0	0
Repurchase of common stock			0	0
Dividends paid on common stock			0	(3,174)
Distributions to noncontrolling interests			0	0
Net proceeds from issuance of Phillips 66 Partners LP common units			0	0
Other			(4)	0
Net Cash Used in Financing Activities			(18)	(3,183)
Effect of Exchange Rate Changes on Cash and Cash Equivalents			0	0
Net Change in Cash and Cash Equivalents			(1,072)	(935)
Cash and cash equivalents at beginning of period			1,648	1,411
Cash and Cash Equivalents at End of Period			576	476
Reportable Legal Entities | All Other Subsidiaries
Cash Flows From Operating Activities
Net Cash Provided by (Used in) Operating Activities			1,730	1,425
Cash Flows From Investing Activities
Capital expenditures and investments			(1,792)	(1,012)
Proceeds from asset dispositions			137	36
Intercompany lending activities			(342)	(394)
Advances/loans—related parties			(95)	0
Collection of advances/loans—related parties			95
Other			27	73
Net Cash Used in Investing Activities			(1,970)	(1,297)
Cash Flows From Financing Activities
Issuance of debt			1,758	85
Repayment of debt			(990)	(115)
Issuance of common stock			0	0
Repurchase of common stock			0	0
Dividends paid on common stock			(118)	(981)
Distributions to noncontrolling interests			(176)	(146)
Net proceeds from issuance of Phillips 66 Partners LP common units			133	114
Other			(15)	(325)
Net Cash Used in Financing Activities			592	(1,368)
Effect of Exchange Rate Changes on Cash and Cash Equivalents			(31)	(20)
Net Change in Cash and Cash Equivalents			321	(1,260)
Cash and cash equivalents at beginning of period			1,371	1,708
Cash and Cash Equivalents at End of Period			1,692	448
Consolidating Adjustments
Cash Flows From Operating Activities
Net Cash Provided by (Used in) Operating Activities			(118)	(4,155)
Cash Flows From Investing Activities
Capital expenditures and investments			0	0
Proceeds from asset dispositions			(350)	(325)
Intercompany lending activities			0	0
Advances/loans—related parties			0	0
Collection of advances/loans—related parties			0
Other			0	0
Net Cash Used in Investing Activities			(350)	(325)
Cash Flows From Financing Activities
Issuance of debt			0	0
Repayment of debt			0	0
Issuance of common stock			0	0
Repurchase of common stock			0	0
Dividends paid on common stock			118	4,155
Distributions to noncontrolling interests			0	0
Net proceeds from issuance of Phillips 66 Partners LP common units			0	0
Other			350	325
Net Cash Used in Financing Activities			468	4,480
Effect of Exchange Rate Changes on Cash and Cash Equivalents			0	0
Net Change in Cash and Cash Equivalents			0	0
Cash and cash equivalents at beginning of period			0	0
Cash and Cash Equivalents at End of Period			$ 0	$ 0

[1] Includes return of investments in equity affiliates.

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Properties, Plants and Equipment (Details) - USD ($) $ in Millions	Sep. 30, 2019	Dec. 31, 2018
Properties, plants and equipment with the associated accumulated depreciation and amortization
Gross PP&E	$ 36,913	$ 35,197
Accum. D&A	13,959	13,179
Net PP&E	22,954	22,018
Midstream
Properties, plants and equipment with the associated accumulated depreciation and amortization
Gross PP&E	10,759	9,663
Accum. D&A	2,316	2,100
Net PP&E	8,443	7,563
Chemicals
Properties, plants and equipment with the associated accumulated depreciation and amortization
Gross PP&E	0	0
Accum. D&A	0	0
Net PP&E	0	0
Refining
Properties, plants and equipment with the associated accumulated depreciation and amortization
Gross PP&E	23,189	22,640
Accum. D&A	10,084	9,531
Net PP&E	13,105	13,109
Marketing and Specialties
Properties, plants and equipment with the associated accumulated depreciation and amortization
Gross PP&E	1,656	1,671
Accum. D&A	927	926
Net PP&E	729	745
Corporate and Other
Properties, plants and equipment with the associated accumulated depreciation and amortization
Gross PP&E	1,309	1,223
Accum. D&A	632	622
Net PP&E	$ 677	$ 601

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Contingencies and Commitments (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2019	Dec. 31, 2018
Debt Instrument [Line Items]
Total environmental accrual	$ 447	$ 447
Performance Guarantee
Debt Instrument [Line Items]
Letters of credit and bank guarantees	$ 644
Reserve for Environmental Costs
Debt Instrument [Line Items]
Expected years to incur a substantial amount of expenditures	30 years

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Phillips 66 Partners LP (Tables)

9 Months Ended

Sep. 30, 2019

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

Schedule of Variable Interest Entities

	Millions of Dollars
	September 30 2019		December 31 2018
Cash and cash equivalents	$	655	1
Equity investments*	2,921		2,448
Net properties, plants and equipment	3,258		3,052
Short-term debt	325		50
Long-term debt	3,490		2,998
* Included in “Investments and long-term receivables” line on the Phillips 66 consolidated balance sheet.

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Pension and Postretirement Plans (Tables)

9 Months Ended

Sep. 30, 2019

Retirement Benefits [Abstract]

Components of Net Periodic Benefit Cost

	Millions of Dollars
	Pension Benefits									Other Benefits
	2019					2018				2019		2018
	U.S.			Int’l.		U.S.		Int’l.
Components of Net Periodic Benefit Cost
Three Months Ended September 30
Service cost	$	32		5		34		5		1		2
Interest cost	27			6		26		6		2		1
Expected return on plan assets	(36		)	(10	)	(42	)	(11	)	—		—
Amortization of prior service credit	—			—		—		—		—		—
Recognized net actuarial loss	14			2		14		5		—		—
Settlements	1			—		49		—		—		—
Net periodic benefit cost*	$	38		3		81		5		3		3
Nine Months Ended September 30
Service cost	$	95		17		102		22		4		5
Interest cost	81			19		78		21		6		5
Expected return on plan assets	(107		)	(33	)	(127	)	(35	)	—		—
Amortization of prior service credit	—			—		—		(1	)	(1	)	(1	)
Recognized net actuarial loss	40			5		44		15		—		—
Settlements	7			—		54		—		—		—
Net periodic benefit cost*	$	116		8		151		22		9		9
* Included in the “Operating expenses” and “Selling, general and administrative expenses” lines on our consolidated statement of income.

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Leases

9 Months Ended

Sep. 30, 2019

Leases [Abstract]

Leases

Note 14—Leases

We lease marine vessels, tugboats, barges, pipelines, storage tanks, railcars, service station sites, office buildings, corporate aircraft, land and other facilities and equipment. In determining whether an agreement contains a lease, we consider our ability to control the asset and whether there are limitations on our control through third-party participation or vendor substitution rights. Certain leases include escalation clauses for adjusting rental payments to reflect changes in price indices, as well as renewal options and/or options to purchase the leased property. Renewal options have been included only when reasonably certain of exercise. There are no significant restrictions imposed on us in our lease agreements with regards to dividend payments, asset dispositions or borrowing ability. Certain leases have residual value guarantees, which may require additional payments at the end of the lease term if future fair values decline below contractual lease balances.

In our implementation of ASU No. 2016-02, we elected to discount lease obligations using our incremental borrowing rate. Furthermore, we elected to separate costs for lease and service components for contracts involving the following asset types: marine vessels, tugboats, barges and consignment service stations. For these contracts, we allocate the consideration payable between the lease and service components using the relative standalone prices of each component. For contracts involving all other asset types, we elected the practical expedient to account for the lease and service components on a combined basis. Our right-of-way agreements in effect prior to January 1, 2019, were not accounted for as leases as they were not initially determined to be leases at their commencement dates. However, modifications to these agreements or new agreements will be assessed and accounted for accordingly under ASU No. 2016-02. For short-term leases, which are leases that, at the commencement date, have a lease term of 12 months or less and do not include an option to purchase the underlying asset that is reasonably certain to exercise, we elected to not recognize the ROU asset and corresponding lease liability on our consolidated balance sheet.

The following table indicates the consolidated balance sheet line items that include the ROU assets and lease liabilities for our finance and operating leases:

	Millions of Dollars
	September 30, 2019
	Finance Leases		Operating Leases
Right-of-Use Assets
Net properties, plants and equipment	$	177	—
Other assets	—		1,338
Total right-of-use assets	$	177	1,338
Lease Liabilities
Short-term debt	$	13	—
Other accruals	—		468
Long-term debt	153		—
Other liabilities and deferred credits	—		820
Total lease liabilities	$	166	1,288

Future minimum lease payments at September 30, 2019, for finance and operating lease liabilities were:

	Millions of Dollars
	Finance Leases			Operating Leases
Remainder of 2019	$	4		126
2020	19			469
2021	18			245
2022	15			157
2023	15			102
Remaining years	135			355
Future minimum lease payments	206			1,454
Amount representing interest or discounts	(40		)	(166	)
Total lease liabilities	$	166		1,288

Our finance lease liabilities relate primarily to an oil terminal in the United Kingdom. The lease liability for this finance lease is subject to foreign currency translation adjustments each reporting period.

Components of net lease cost for the three and nine months ended September 30, 2019, were:

	Millions of Dollars
	Three Months Ended September 30			Nine Months Ended September 30
	2019			2019
Finance lease cost
Amortization of right-of-use assets	$	5		15
Interest on lease liabilities	2			5
Total finance lease cost	7			20
Operating lease cost	126			386
Short-term lease cost	29			93
Variable lease cost	6			18
Sublease income	(4		)	(14	)
Total net lease cost	$	164		503

Cash paid for amounts included in the measurement of our lease liabilities for the nine months ended September 30, 2019, were:

	Millions of Dollars
Operating cash outflows—finance leases	$	5
Operating cash outflows—operating leases	397
Financing cash outflows—finance leases	18

During the nine months ended September 30, 2019, we recorded noncash ROU assets and corresponding operating lease liabilities totaling $259 million related to new and modified lease agreements.

At September 30, 2019, the weighted-average remaining lease term and discount rate for our lease liabilities were:

Weighted-average remaining lease term—finance leases (years)	12.7
Weighted-average remaining lease term—operating leases (years)	5.5
Weighted-average discount rate—finance leases (percent)	3.7	%
Weighted-average discount rate—operating leases (percent)	3.9

Leases

Note 14—Leases

We lease marine vessels, tugboats, barges, pipelines, storage tanks, railcars, service station sites, office buildings, corporate aircraft, land and other facilities and equipment. In determining whether an agreement contains a lease, we consider our ability to control the asset and whether there are limitations on our control through third-party participation or vendor substitution rights. Certain leases include escalation clauses for adjusting rental payments to reflect changes in price indices, as well as renewal options and/or options to purchase the leased property. Renewal options have been included only when reasonably certain of exercise. There are no significant restrictions imposed on us in our lease agreements with regards to dividend payments, asset dispositions or borrowing ability. Certain leases have residual value guarantees, which may require additional payments at the end of the lease term if future fair values decline below contractual lease balances.

In our implementation of ASU No. 2016-02, we elected to discount lease obligations using our incremental borrowing rate. Furthermore, we elected to separate costs for lease and service components for contracts involving the following asset types: marine vessels, tugboats, barges and consignment service stations. For these contracts, we allocate the consideration payable between the lease and service components using the relative standalone prices of each component. For contracts involving all other asset types, we elected the practical expedient to account for the lease and service components on a combined basis. Our right-of-way agreements in effect prior to January 1, 2019, were not accounted for as leases as they were not initially determined to be leases at their commencement dates. However, modifications to these agreements or new agreements will be assessed and accounted for accordingly under ASU No. 2016-02. For short-term leases, which are leases that, at the commencement date, have a lease term of 12 months or less and do not include an option to purchase the underlying asset that is reasonably certain to exercise, we elected to not recognize the ROU asset and corresponding lease liability on our consolidated balance sheet.

The following table indicates the consolidated balance sheet line items that include the ROU assets and lease liabilities for our finance and operating leases:

	Millions of Dollars
	September 30, 2019
	Finance Leases		Operating Leases
Right-of-Use Assets
Net properties, plants and equipment	$	177	—
Other assets	—		1,338
Total right-of-use assets	$	177	1,338
Lease Liabilities
Short-term debt	$	13	—
Other accruals	—		468
Long-term debt	153		—
Other liabilities and deferred credits	—		820
Total lease liabilities	$	166	1,288

Future minimum lease payments at September 30, 2019, for finance and operating lease liabilities were:

	Millions of Dollars
	Finance Leases			Operating Leases
Remainder of 2019	$	4		126
2020	19			469
2021	18			245
2022	15			157
2023	15			102
Remaining years	135			355
Future minimum lease payments	206			1,454
Amount representing interest or discounts	(40		)	(166	)
Total lease liabilities	$	166		1,288

Our finance lease liabilities relate primarily to an oil terminal in the United Kingdom. The lease liability for this finance lease is subject to foreign currency translation adjustments each reporting period.

Components of net lease cost for the three and nine months ended September 30, 2019, were:

	Millions of Dollars
	Three Months Ended September 30			Nine Months Ended September 30
	2019			2019
Finance lease cost
Amortization of right-of-use assets	$	5		15
Interest on lease liabilities	2			5
Total finance lease cost	7			20
Operating lease cost	126			386
Short-term lease cost	29			93
Variable lease cost	6			18
Sublease income	(4		)	(14	)
Total net lease cost	$	164		503

Cash paid for amounts included in the measurement of our lease liabilities for the nine months ended September 30, 2019, were:

	Millions of Dollars
Operating cash outflows—finance leases	$	5
Operating cash outflows—operating leases	397
Financing cash outflows—finance leases	18

During the nine months ended September 30, 2019, we recorded noncash ROU assets and corresponding operating lease liabilities totaling $259 million related to new and modified lease agreements.

At September 30, 2019, the weighted-average remaining lease term and discount rate for our lease liabilities were:

Weighted-average remaining lease term—finance leases (years)	12.7
Weighted-average remaining lease term—operating leases (years)	5.5
Weighted-average discount rate—finance leases (percent)	3.7	%
Weighted-average discount rate—operating leases (percent)	3.9

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Related Party Transactions

9 Months Ended

Sep. 30, 2019

Related Party Transactions [Abstract]

Related Party Transactions

Note 18—Related Party Transactions

Significant transactions with related parties were:

	Millions of Dollars
	Three Months Ended September 30			Nine Months Ended September 30
	2019		2018	2019	2018
Operating revenues and other income (a)	$	756	955	2,235	2,717
Purchases (b)	2,842		3,667	8,770	9,534
Operating expenses and selling, general and administrative expenses (c)	8		12	25	44

(a) We sold NGL and other petrochemical feedstocks, along with solvents, to CPChem, gas oil and hydrogen feedstocks to Excel Paralubes (Excel), and refined petroleum products to OnCue. We also sold certain feedstocks and intermediate products to WRB and acted as agent for WRB in supplying crude oil and other feedstocks for a fee. In addition, we charged several of our 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 and NGL from WRB and also acted as agent for WRB in distributing solvents. We also purchased natural gas and NGL from DCP Midstream and CPChem, as well as other feedstocks from various 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 affiliates for transporting crude oil, refined petroleum products and NGL.

(c)

We paid utility and processing fees to various affiliates.

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Investments, Loans and Long-Term Receivables (Tables)

9 Months Ended

Sep. 30, 2019

Equity Method Investments and Joint Ventures [Abstract]

Summary of Financial Information

	Millions of Dollars
	Three Months Ended September 30			Nine Months Ended September 30
	2019		2018	2019	2018
Revenues	$	2,369	3,195	7,209	8,773
Income before income taxes	475		552	1,522	1,819
Net income	456		531	1,464	1,766

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Contingencies and Commitments (Policies)

9 Months Ended

Sep. 30, 2019

Commitments and Contingencies Disclosure [Abstract]

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 less than certain.

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Guarantees

9 Months Ended

Sep. 30, 2019

Guarantees [Abstract]

Guarantees

Note 10—Guarantees

At September 30, 2019, 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.

Guarantees of Joint Venture Obligations

In June 2019, Phillips 66 Partners issued a guarantee for 42.25% of Gray Oak’s third-party term loan facility. See Note 6—Investments, Loans and Long-Term Receivables, for additional information.

In addition, at September 30, 2019, we had other guarantees outstanding for our portion of certain joint venture debt obligations, which have remaining terms of up to six years. The maximum potential amount of future payments to third parties under these guarantees was approximately $135 million. Payment would be required if a joint venture defaults on its obligations.

Residual Value Guarantees

Under the operating lease agreement on our headquarters facility in Houston, Texas, we have a residual value guarantee with a maximum future exposure of $554 million at September 30, 2019. The operating lease term ends in June 2021 and provides us the option, at the end of the lease term, to renew the lease, purchase the facility or assist the lessor in marketing it for resale. We also have residual value guarantees associated with railcar and airplane leases with maximum future exposures totaling $344 million at September 30, 2019, which have remaining terms of up to five years.

Indemnifications

Over the years, we 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 and employee claims, as well as real estate indemnity against 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. At September 30, 2019, and December 31, 2018, the carrying amount of recorded indemnifications was $159 million and $171 million, respectively.

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 that the liability was essentially relieved or amortize the liability over an appropriate time period as the fair value of our indemnification exposure declines. 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 September 30, 2019, and December 31, 2018, environmental accruals for known contamination of $110 million and $101 million, respectively, were included in the carrying amount of recorded indemnifications. These environmental accruals were primarily included in the “Asset retirement obligations and accrued environmental costs” line 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 the 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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Changes in Accounting Principles

9 Months Ended

Sep. 30, 2019

Accounting Changes and Error Corrections [Abstract]

Changes in Accounting Principles

Note 2—Changes in Accounting Principles

Effective January 1, 2019, we elected to adopt Financial Accounting Standards Board (FASB) Accounting Standards Update (ASU) No. 2018-02, “Income Statement—Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income.” This ASU permits the deferred income tax effects stranded in accumulated other comprehensive income (AOCI) resulting from the U.S. Tax Cuts and Jobs Act (the Tax Act) enacted in December 2017 to be reclassified to retained earnings. As of January 1, 2019, we recorded a cumulative effect adjustment to our opening consolidated balance sheet to reclassify an aggregate income tax benefit of $89 million, primarily related to our pension plans, from accumulated other comprehensive loss to retained earnings.

Effective January 1, 2019, we early adopted ASU 2016-13, “Financial Instruments—Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments,” using the modified retrospective transition method. This ASU amends the impairment model to utilize an expected loss methodology in place of the incurred loss methodology for financial instruments, including trade receivables, and off-balance sheet credit exposures. The amendment requires entities to consider a broader range of information to estimate expected credit losses, which may result in earlier recognition of losses. We recorded a noncash cumulative effect adjustment to retained earnings of $9 million, net of $3 million of income taxes, on our opening consolidated balance sheet as of January 1, 2019. See Note 4—Credit Losses, for more information on our presentation of credit losses.

Effective January 1, 2019, we adopted ASU No. 2016-02, “Leases (Topic 842),” using the modified retrospective transition method. The new standard establishes a right-of-use (ROU) model that requires a lessee to record a ROU asset and a lease liability on the consolidated balance sheet for all leases with terms longer than 12 months. Leases will continue to be classified as either finance or operating, with classification affecting the pattern of expense recognition in the consolidated income statement.

We elected the package of practical expedients that allowed us to carry forward our determination of whether an arrangement contained a lease and lease classification, as well as our accounting for initial direct costs for existing contracts. We recorded a noncash cumulative effect adjustment to our opening consolidated balance sheet as of January 1, 2019, to record an aggregate operating lease ROU asset and corresponding lease liability of $1,415 million and immaterial adjustments to retained earnings and noncontrolling interests. See Note 14—Leases, for the new lease disclosures required by this ASU.

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Investments, Loans and Long-Term Receivables

9 Months Ended

Sep. 30, 2019

Equity Method Investments and Joint Ventures [Abstract]

Investments, Loans and Long-Term Receivables

Note 6—Investments, Loans and Long-Term Receivables

Equity Investments

Summarized 100% financial information for Chevron Phillips Chemical Company LLC (CPChem) was as follows:

	Millions of Dollars
	Three Months Ended September 30			Nine Months Ended September 30
	2019		2018	2019	2018
Revenues	$	2,369	3,195	7,209	8,773
Income before income taxes	475		552	1,522	1,819
Net income	456		531	1,464	1,766

DCP Midstream, LLC (DCP Midstream)

The fair value of our investment in DCP Midstream depends on the market value of DCP Midstream’s general partner interest in DCP Midstream, LP (DCP Partners) and the market value of DCP Partners’ common units.  At June 30, 2019, we estimated the fair value of our investment in DCP Midstream was below our book value, but we believed the condition was temporary.  The fair value of our investment in DCP Midstream further deteriorated in the third quarter as the market value of DCP Midstream’s general partner interest in DCP Partners and the market value of DCP Partners’ common units declined further.  We concluded the decline in fair value was no longer temporary due to the duration and magnitude of the decline.  Accordingly, we recorded an $853 million impairment in the third quarter of 2019. The impairment is included in the “Impairments” line on our consolidated statement of income and results in our investment in DCP Midstream having a book value of $1,358 million at September 30, 2019. See Note 13—Fair Value Measurements, for additional information on the techniques used to determine the fair value of our investment in DCP Midstream.

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

In March 2019, a wholly owned subsidiary of Dakota Access closed an offering of $2,500 million aggregate principal amount of unsecured senior notes. The net proceeds from the issuance of these notes were used to repay amounts outstanding under existing credit facilities of Dakota Access and ETCO. 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, if Dakota Access receives an unfavorable court ruling related to certain disputed construction permits and Dakota Access determines that an equity contribution trigger event has occurred, the venturers may be severally required to make proportionate equity contributions to Dakota Access and ETCO up to an aggregate maximum of approximately $2,525 million. Phillips 66 Partners’ share of the maximum potential equity contributions under the CECU is approximately $631 million.

Gray Oak Pipeline, LLC (Gray Oak)

In February 2019, Gray Oak Holdings LLC (Holdings LLC), a consolidated subsidiary of Phillips 66 Partners, transferred a 10% ownership interest in Gray Oak to a third party that exercised a purchase option, for proceeds of $81 million. This transfer was accounted for as a sale and resulted in a decrease in Holdings LLC’s ownership interest in Gray Oak from 75% to 65% and the recognition of an immaterial gain. The proceeds received from this sale are presented as an investing cash inflow in the “Proceeds from asset dispositions” line on our consolidated statement of cash flows. At September 30, 2019, Phillips 66 Partners’ effective ownership interest in the Gray Oak Pipeline was 42.25%.

In June 2019, Gray Oak entered into a third-party term loan facility with an initial borrowing capacity of $1,230 million, which was increased in July 2019 to $1,317 million. Borrowings under the facility are due on June 3, 2022. Phillips 66 Partners and its co-venturers provided a guarantee through an equity contribution agreement requiring proportionate equity contributions to Gray Oak up to the total outstanding loan amount. Under the agreement, Phillips 66 Partners’ maximum potential amount of future obligations is $556 million, plus any accrued interest and associated fees, which would be required if the term loan facility is fully utilized and Gray Oak defaults on its obligations. At September 30, 2019, Gray Oak had outstanding borrowings of $904 million, and Phillips 66 Partners’ 42.25% proportionate exposure under the equity contribution agreement was $382 million. The net proceeds from the term loan were used by Gray Oak for construction of the Gray Oak Pipeline and repayment of amounts borrowed under a related party loan agreement that Phillips 66 Partners and its co-venturers executed in March 2019 and terminated upon the repayment by Gray Oak in June. The total related party loan to and repayment received from Gray Oak was $95 million.

At September 30, 2019, Phillips 66 Partners’ maximum exposure to loss was $1,130 million, which represented the book value of the investment in Gray Oak of $748 million and the term loan guarantee of $382 million. See Note 21—Phillips 66 Partners LP, for additional information regarding Phillips 66 Partners’ ownership in Holdings LLC and Gray Oak.

Phillips 66 Partners accounts for the investment in Gray Oak under the equity method because it does not have sufficient voting rights over key governance provisions to assert control over Gray Oak. Gray Oak is considered a variable interest entity (VIE) because it does not have sufficient equity at risk to fully fund the construction of all assets required for principal operations. Phillips 66 Partners has determined it is not the primary beneficiary because it and its co-venturers jointly direct the activities of Gray Oak that most significantly impact Gray Oak’s economic performance.

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 OnCue’s economic performance. At September 30, 2019, our maximum exposure to loss was $139 million, which represented the book value of our investment in OnCue of $76 million and guaranteed debt obligations of $63 million.

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Phillips 66 Partners LP (Narrative) (Details) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
	Aug. 01, 2019	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Subsidiary or Equity Method Investee [Line Items]
Other				$ 282	$ (79)
Partners capital restructuring transaction		$ (98)		(98)
Restructuring Transaction on Partner's Capital Accounts
Subsidiary or Equity Method Investee [Line Items]
Increase in deferred income taxes	$ 91
Transaction costs included in liability	$ 7
Common Units | At The Market Offering Program | Phillips 66 Partners LP
Subsidiary or Equity Method Investee [Line Items]
Partners' capital account, public sale of units net of offering costs		$ 91	$ 47	$ 133	$ 114
Phillips 66 Partners LP
Subsidiary or Equity Method Investee [Line Items]
Limited partner interest in Phillips 66 Partners owned by public, percentage				25.00%
Phillips 66 Partners LP | Variable Interest Entity, Primary Beneficiary
Subsidiary or Equity Method Investee [Line Items]
Limited partnership interest in Phillips 66 Partners, percentage				75.00%
General partnership interest in Phillips 66 Partners, percentage	2.00%
Percentage of ownership		75.00%		75.00%
Phillips 66 Partners LP | Preferred Units
Subsidiary or Equity Method Investee [Line Items]
Ownership interest (in shares)		13,800,000		13,800,000
Phillips 66 Partners LP | Common Units | Variable Interest Entity, Primary Beneficiary
Subsidiary or Equity Method Investee [Line Items]
Shares, issued (in shares)	101,000,000
Ownership interest (in shares)		170,000,000		170,000,000
Gray Oak Holdings LLC | Third Party
Subsidiary or Equity Method Investee [Line Items]
Other				$ 341
Gray Oak Holdings LLC | Third Party
Subsidiary or Equity Method Investee [Line Items]
Percentage of ownership						35.00%
Noncontrolling Interest [Member]
Subsidiary or Equity Method Investee [Line Items]
Partners capital restructuring transaction		$ (373)		(373)
Noncontrolling Interest [Member] | Variable Interest Entity, Primary Beneficiary | Phillips 66 Partners LP
Subsidiary or Equity Method Investee [Line Items]
Partners capital restructuring transaction				$ 373

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Consolidated Balance Sheet (Parenthetical) - USD ($) $ in Millions	Sep. 30, 2019	Dec. 31, 2018
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)	647,050,977	645,691,761
Treasury stock (in shares)	202,693,401	189,526,331
Third Party
Allowance for doubtful accounts	$ 41	$ 22

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Leases (Additional Information) (Details) $ in Millions	9 Months Ended
	Sep. 30, 2019 USD ($)
Leases [Abstract]
Right-of-use asset obtained in exchange for operating lease liability	$ 259

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Leases (Balance Sheet) (Details) - USD ($) $ in Millions	Sep. 30, 2019	Jan. 01, 2019
Leases [Abstract]
Finance leases, Total right-of-use assets	$ 177
Short-term debt	13
Long-term debt	153
Finance leases, Total lease liabilities	166
Operating leases, Total right-of-use assets	1,338	$ 1,415
Other accruals	468
Other liabilities and deferred credits	820
Operating leases, Total lease liabilities	$ 1,288	$ 1,415

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Cover Page	9 Months Ended
	Sep. 30, 2019 shares
Cover page.
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Sep. 30, 2019
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 (in shares)	444,357,576
Entity Central Index Key	0001534701
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q3
Amendment Flag	false

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Related Party Transactions (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Significant transactions with related parties
Operating revenues and other income	$ 756	$ 955	$ 2,235	$ 2,717
Purchases	2,842	3,667	8,770	9,534
Operating expenses and selling, general and administrative expenses	$ 8	$ 12	$ 25	$ 44

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Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
	Jan. 01, 2019	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Amounts reclassified from accumulated other comprehensive income (loss)
Beginning Balance	$ 27,153	$ 27,306	$ 24,960	$ 27,153	$ 27,428
Other comprehensive income (loss) before reclassifications				(125)
Other Comprehensive Income (Loss), Net of Income Taxes		(104)	41	(90)	(22)
Income taxes reclassified to retained earnings	(89)			(89)
Ending Balance		27,092	25,795	27,092	25,795
Defined Benefit Plans
Amounts reclassified from accumulated other comprehensive income (loss)
Beginning Balance	(472)			(472)	(598)
Other comprehensive income (loss) before reclassifications				5	10
Amounts reclassified from accumulated other comprehensive loss				40	84
Other Comprehensive Income (Loss), Net of Income Taxes				45	94
Income taxes reclassified to retained earnings				(93)
Ending Balance		(520)	(504)	(520)	(504)
Foreign Currency Translation
Amounts reclassified from accumulated other comprehensive income (loss)
Beginning Balance	(228)			(228)	(26)
Other comprehensive income (loss) before reclassifications				(124)	(113)
Amounts reclassified from accumulated other comprehensive loss				0	(10)
Other Comprehensive Income (Loss), Net of Income Taxes				(124)	(123)
Income taxes reclassified to retained earnings				2
Ending Balance		(350)	(149)	(350)	(149)
Hedging
Amounts reclassified from accumulated other comprehensive income (loss)
Beginning Balance	8			8	7
Other comprehensive income (loss) before reclassifications				(6)	9
Amounts reclassified from accumulated other comprehensive loss				(5)	(2)
Other Comprehensive Income (Loss), Net of Income Taxes				(11)	7
Income taxes reclassified to retained earnings				2
Ending Balance		(1)	14	(1)	14
Accumulated Other Comprehensive Loss
Amounts reclassified from accumulated other comprehensive income (loss)
Beginning Balance	$ (692)	(767)	(680)	(692)	(617)
Other comprehensive income (loss) before reclassifications					(94)
Other Comprehensive Income (Loss), Net of Income Taxes		(104)	41	(90)	(22)
Ending Balance		$ (871)	$ (639)	$ (871)	$ (639)

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Interim Financial Information

9 Months Ended

Sep. 30, 2019

Interim Financial Information [Abstract]

Interim Financial Information

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 2018 Annual Report on Form 10-K. The results of operations for the three and nine months ended September 30, 2019, are not necessarily indicative of the results expected for the full year. Certain prior period financial information has been recast to reflect the current year’s presentation.

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Condensed Consolidating Financial Information (Balance Sheet) (Details) - USD ($) $ in Millions	Sep. 30, 2019	Dec. 31, 2018
Assets
Cash and cash equivalents	$ 2,268	$ 3,019
Accounts and notes receivable	7,086	6,173
Inventories	5,521	3,543
Prepaid expenses and other current assets	742	474
Total Current Assets	15,617	13,209
Investments and long-term receivables	14,147	14,421
Net properties, plants and equipment	22,954	22,018
Goodwill	3,270	3,270
Intangibles	872	869
Other assets	1,881	515
Total Assets	58,741	54,302
Liabilities and Equity
Accounts payable	8,373	6,586
Short-term debt	842	67
Accrued income and other taxes	1,128	1,116
Employee benefit obligations	624	724
Other accruals	1,116	442
Total Current Liabilities	12,083	8,935
Long-term debt	11,083	11,093
Asset retirement obligations and accrued environmental costs	617	624
Deferred income taxes	5,503	5,275
Employee benefit obligations	905	867
Other liabilities and deferred credits	1,458	355
Total Liabilities	31,649	27,149
Common stock	3,998	4,856
Retained earnings	21,730	20,489
Accumulated other comprehensive loss	(871)	(692)
Noncontrolling interests	2,235	2,500
Total Liabilities and Equity	58,741	54,302
Reportable Legal Entities | Phillips 66
Assets
Cash and cash equivalents	0	0
Accounts and notes receivable	0	9
Inventories	0	0
Prepaid expenses and other current assets	0	2
Total Current Assets	0	11
Investments and long-term receivables	33,126	32,712
Net properties, plants and equipment	0	0
Goodwill	0	0
Intangibles	0	0
Other assets	12	9
Total Assets	33,138	32,732
Liabilities and Equity
Accounts payable	0	0
Short-term debt	500	0
Accrued income and other taxes	0	0
Employee benefit obligations	0	0
Other accruals	133	66
Total Current Liabilities	633	66
Long-term debt	7,433	7,928
Asset retirement obligations and accrued environmental costs	0	0
Deferred income taxes	0	1
Employee benefit obligations	0	0
Other liabilities and deferred credits	185	55
Total Liabilities	8,251	8,050
Common stock	3,998	4,856
Retained earnings	21,760	20,518
Accumulated other comprehensive loss	(871)	(692)
Noncontrolling interests	0	0
Total Liabilities and Equity	33,138	32,732
Reportable Legal Entities | Phillips 66 Company
Assets
Cash and cash equivalents	576	1,648
Accounts and notes receivable	5,316	4,255
Inventories	3,673	2,489
Prepaid expenses and other current assets	525	373
Total Current Assets	10,090	8,765
Investments and long-term receivables	24,034	22,799
Net properties, plants and equipment	13,350	13,218
Goodwill	2,853	2,853
Intangibles	732	726
Other assets	5,882	335
Total Assets	56,941	48,696
Liabilities and Equity
Accounts payable	6,944	5,415
Short-term debt	11	11
Accrued income and other taxes	672	458
Employee benefit obligations	569	663
Other accruals	1,310	227
Total Current Liabilities	9,506	6,774
Long-term debt	55	54
Asset retirement obligations and accrued environmental costs	453	458
Deferred income taxes	3,761	3,541
Employee benefit obligations	725	676
Other liabilities and deferred credits	9,448	4,611
Total Liabilities	23,948	16,114
Common stock	25,802	24,960
Retained earnings	8,062	8,314
Accumulated other comprehensive loss	(871)	(692)
Noncontrolling interests	0	0
Total Liabilities and Equity	56,941	48,696
Reportable Legal Entities | All Other Subsidiaries
Assets
Cash and cash equivalents	1,692	1,371
Accounts and notes receivable	4,106	3,202
Inventories	1,848	1,054
Prepaid expenses and other current assets	217	99
Total Current Assets	7,863	5,726
Investments and long-term receivables	9,884	9,829
Net properties, plants and equipment	9,604	8,800
Goodwill	417	417
Intangibles	140	143
Other assets	729	173
Total Assets	28,637	25,088
Liabilities and Equity
Accounts payable	3,765	2,464
Short-term debt	331	56
Accrued income and other taxes	456	658
Employee benefit obligations	55	61
Other accruals	262	149
Total Current Liabilities	4,869	3,388
Long-term debt	3,595	3,111
Asset retirement obligations and accrued environmental costs	164	166
Deferred income taxes	1,743	1,735
Employee benefit obligations	180	191
Other liabilities and deferred credits	5,351	4,287
Total Liabilities	15,902	12,878
Common stock	9,239	8,754
Retained earnings	1,662	1,249
Accumulated other comprehensive loss	(401)	(293)
Noncontrolling interests	2,235	2,500
Total Liabilities and Equity	28,637	25,088
Consolidating Adjustments
Assets
Cash and cash equivalents	0	0
Accounts and notes receivable	(2,336)	(1,293)
Inventories	0	0
Prepaid expenses and other current assets	0	0
Total Current Assets	(2,336)	(1,293)
Investments and long-term receivables	(52,897)	(50,919)
Net properties, plants and equipment	0	0
Goodwill	0	0
Intangibles	0	0
Other assets	(4,742)	(2)
Total Assets	(59,975)	(52,214)
Liabilities and Equity
Accounts payable	(2,336)	(1,293)
Short-term debt	0	0
Accrued income and other taxes	0	0
Employee benefit obligations	0	0
Other accruals	(589)	0
Total Current Liabilities	(2,925)	(1,293)
Long-term debt	0	0
Asset retirement obligations and accrued environmental costs	0	0
Deferred income taxes	(1)	(2)
Employee benefit obligations	0	0
Other liabilities and deferred credits	(13,526)	(8,598)
Total Liabilities	(16,452)	(9,893)
Common stock	(35,041)	(33,714)
Retained earnings	(9,754)	(9,592)
Accumulated other comprehensive loss	1,272	985
Noncontrolling interests	0	0
Total Liabilities and Equity	$ (59,975)	$ (52,214)

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Credit Losses (Details) $ in Millions	Sep. 30, 2019 USD ($)
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Accounts and notes receivable	$ 7,086
Accounts and notes receivable, percent outstanding less than 60 days	99.00%

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Investments, Loans and Long-Term Receivables (DCP Midstream, LLC) (Details) - DCP Midstream $ in Millions	3 Months Ended
	Sep. 30, 2019 USD ($)
Schedule of Equity Method Investments [Line Items]
Noncash impairment, before-tax	$ 853
Equity investments	$ 1,358

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Changes in Accounting Principles (Details) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
	Jan. 01, 2019	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Jan. 01, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Income taxes reclassified to retained earnings	$ 89			$ 89
Cumulative effect of accounting changes	(9)					$ 49
Income tax expense		$ 150	$ 407	545	$ 970
Right-of-use assets	1,415	1,338		1,338
Lease liability	1,415	$ 1,288		$ 1,288
Retained Earnings
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative effect of accounting changes	81					$ 36
Retained Earnings | Accounting Standards Update 2016-13
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative effect of accounting changes	9
Income tax expense	$ 3

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Related Party Transactions (Tables)

9 Months Ended

Sep. 30, 2019

Related Party Transactions [Abstract]

Significant Transactions with Related Parties

	Millions of Dollars
	Three Months Ended September 30			Nine Months Ended September 30
	2019		2018	2019	2018
Operating revenues and other income (a)	$	756	955	2,235	2,717
Purchases (b)	2,842		3,667	8,770	9,534
Operating expenses and selling, general and administrative expenses (c)	8		12	25	44

(a) We sold NGL and other petrochemical feedstocks, along with solvents, to CPChem, gas oil and hydrogen feedstocks to Excel Paralubes (Excel), and refined petroleum products to OnCue. We also sold certain feedstocks and intermediate products to WRB and acted as agent for WRB in supplying crude oil and other feedstocks for a fee. In addition, we charged several of our 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 and NGL from WRB and also acted as agent for WRB in distributing solvents. We also purchased natural gas and NGL from DCP Midstream and CPChem, as well as other feedstocks from various 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 affiliates for transporting crude oil, refined petroleum products and NGL.

(c)

We paid utility and processing fees to various affiliates.

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Fair Value Measurements (Tables)

9 Months Ended

Sep. 30, 2019

Fair Value Disclosures [Abstract]

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

	Millions of Dollars
	September 30, 2019
	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	$	788	657	—	1,445	(1,346	)	(5	)	—		94
OTC instruments	—		1	—	1	—		—		—		1
Physical forward contracts	—		64	1	65	—		—		—		65
Interest rate derivatives	—		1	—	1	—		—		—		1
Rabbi trust assets	122		—	—	122	N/A		N/A		—		122
	$	910	723	1	1,634	(1,346	)	(5	)	—		283
Commodity Derivative Liabilities
Exchange-cleared instruments	$	748	669	—	1,417	(1,346	)	(70	)	—		1
OTC instruments	—		3	—	3	—		—		—		3
Physical forward contracts	—		16	—	16	—		—		—		16
Floating-rate debt	—		1,075	—	1,075	N/A		N/A		—		1,075
Fixed-rate debt, excluding capital leases	—		12,050	—	12,050	N/A		N/A		(1,377	)	10,673
	$	748	13,813	—	14,561	(1,346	)	(70	)	(1,377	)	11,768

	Millions of Dollars
	December 31, 2018
	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	$	674	547	—	1,221	(1,075	)	(89	)	—	57
Physical forward contracts	—		39	4	43	—		—		—	43
Interest rate derivatives	—		15	—	15	—		—		—	15
Rabbi trust assets	104		—	—	104	N/A		N/A		—	104
	$	778	601	4	1,383	(1,075	)	(89	)	—	219
Commodity Derivative Liabilities
Exchange-cleared instruments	$	605	472	—	1,077	(1,075	)	—		—	2
Physical forward contracts	—		20	—	20	—		—		—	20
OTC instruments	—		3	—	3	—		—		—	3
Floating-rate debt	—		1,200	—	1,200	N/A		N/A		—	1,200
Fixed-rate debt, excluding capital leases	—		9,727	—	9,727	N/A		N/A		49	9,776
	$	605	11,422	—	12,027	(1,075	)	—		49	11,001

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Debt (Details) - USD ($)		1 Months Ended
	Mar. 01, 2018	Jun. 30, 2018	Oct. 15, 2019	Sep. 30, 2019	Sep. 13, 2019	Sep. 06, 2019	Jul. 30, 2019	Dec. 31, 2018
Revolving Credit Facility
Debt Instrument [Line Items]
Line of credit facility, amount outstanding				$ 0				$ 0
Revolving Credit Facility | Credit Agreement
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity							$ 5,000,000,000
Line of credit facility, optional overall capacity							6,000,000,000
Senior Notes
Debt Instrument [Line Items]
Senior notes	$ 1,500,000,000
Senior Notes | Floating Rate Notes Due 2021
Debt Instrument [Line Items]
Senior notes	$ 500,000,000
Senior Notes | Floating Rate Notes Due 2021 | London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Basis spread on variable rate	0.60%
Senior Notes | Senior Notes Due 2028
Debt Instrument [Line Items]
Senior notes	$ 800,000,000
Senior notes, interest percent	3.90%
Senior Notes | Senior Notes Due 2044
Debt Instrument [Line Items]
Senior notes	$ 200,000,000
Senior notes, interest percent	4.875%
Loans Payable
Debt Instrument [Line Items]
Repayments of long-term debt		$ 250,000,000
Loans Payable | Term Loan Due April 2020
Debt Instrument [Line Items]
Outstanding principal balance		$ 450,000,000
Debt term		3 years
Phillips 66 Partners LP | Variable Interest Entity, Primary Beneficiary
Debt Instrument [Line Items]
Short-term debt				325,000,000				50,000,000
Outstanding principal balance				3,490,000,000				2,998,000,000
Phillips 66 Partners LP | Variable Interest Entity, Primary Beneficiary | Revolving Credit Facility
Debt Instrument [Line Items]
Line of credit facility, amount outstanding				$ 0				$ 125,000,000
Phillips 66 Partners LP | Variable Interest Entity, Primary Beneficiary | Revolving Credit Facility | Credit Agreement
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity							750,000,000
Line of credit facility, optional overall capacity							$ 1,000,000,000
Phillips 66 Partners LP | Variable Interest Entity, Primary Beneficiary | Senior Notes | 2.646% Senior Notes Due February 2020 | Subsequent Event
Debt Instrument [Line Items]
Senior notes, interest percent			2.646%
Short-term debt			$ 300,000,000
Phillips 66 Partners LP | Variable Interest Entity, Primary Beneficiary | Senior Notes | Term Loan Due March 2020
Debt Instrument [Line Items]
Short-term debt					$ 400,000,000
Phillips 66 Partners LP | Variable Interest Entity, Primary Beneficiary | Senior Notes
Debt Instrument [Line Items]
Senior notes						$ 900,000,000
Phillips 66 Partners LP | Variable Interest Entity, Primary Beneficiary | Senior Notes | 2.450% Senior Notes due December 15, 2024
Debt Instrument [Line Items]
Senior notes						$ 300,000,000
Senior notes, interest percent						2.45%
Phillips 66 Partners LP | Variable Interest Entity, Primary Beneficiary | Senior Notes | 3.150% Senior Notes Due December 15, 2029
Debt Instrument [Line Items]
Senior notes						$ 600,000,000
Senior notes, interest percent						3.15%

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Derivatives and Financial Instruments (Summary of Gains/(Losses) From Commodity Derivatives) (Details) - Commodity Derivatives - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Summary of gains (losses) from commodity derivatives
Net gain (loss) from commodity derivative activity	$ 151	$ (233)	$ (97)	$ (555)
Sales and other operating revenues
Summary of gains (losses) from commodity derivatives
Net gain (loss) from commodity derivative activity	71	(98)	(89)	(227)
Other income
Summary of gains (losses) from commodity derivatives
Net gain (loss) from commodity derivative activity	20	3	33	(17)
Purchased crude oil and products
Summary of gains (losses) from commodity derivatives
Net gain (loss) from commodity derivative activity	$ 60	$ (138)	$ (41)	$ (311)

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Derivatives and Financial Instruments

9 Months Ended

Sep. 30, 2019

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Derivatives and Financial Instruments

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 income. Gains and losses from derivative contracts held for trading not directly related to our physical business are reported net in the “Other income” line on our consolidated statement of income. 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 our 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
	September 30, 2019								December 31, 2018
	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	$	1,018	(856	)	(5	)	157		1,257	(1,070	)	(89	)	98
Other assets	4		(1	)	—		3		2	—		—		2
Liabilities
Other accruals	454		(542	)	70		(18	)	—	(23	)	—		(23	)
Other liabilities and deferred credits	35		(37	)	—		(2	)	5	(7	)	—		(2	)
Total	$	1,511	(1,436	)	65		140		1,264	(1,100	)	(89	)	75

At September 30, 2019, and December 31, 2018, 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 income, were:

	Millions of Dollars
	Three Months Ended September 30				Nine Months Ended September 30
	2019		2018		2019		2018
Sales and other operating revenues	$	71	(98	)	(89	)	(227	)
Other income	20		3		33		(17	)
Purchased crude oil and products	60		(138	)	(41	)	(311	)
Net gain (loss) from commodity derivative activity	$	151	(233	)	(97	)	(555	)

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 non-derivative positions such as inventory volumes. Financial derivative contracts may also offset physical derivative contracts, such as forward sales contracts. The percentage of our derivative contract volumes expiring within the next 12 months was at least 97% at September 30, 2019, and December 31, 2018.

	Open Position Long / (Short)
	September 30 2019		December 31 2018
Commodity
Crude oil, refined petroleum products and NGL (millions of barrels)	(35	)	(17	)

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 LIBOR and changes, if any, in our credit rating over the five-year term of the lease. The pay-fixed, receive-floating interest rate swaps have an aggregate notional value of $650 million and end in April 2021. We have designated these swaps as cash flow hedges.

The aggregate net fair value of these swaps, which is included in the “Prepaid expenses and other current assets” and “Other assets” lines on our consolidated balance sheet, totaled $1 million and $15 million at September 30, 2019, and December 31, 2018, respectively.

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 in the same period during which the hedged transaction affects earnings. Net realized gains and losses from settlements of the swaps were immaterial for the three and nine months ended September 30, 2019 and 2018.

We currently estimate that pre-tax gains of $1 million will be reclassified from accumulated other comprehensive loss into general and administrative expenses during the next 12 months as the hedged transactions settle; however, the actual amounts that will be reclassified will vary based on changes in interest rates.

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 September 30, 2019, and December 31, 2018.

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Accumulated Other Comprehensive Loss

9 Months Ended

Sep. 30, 2019

Equity [Abstract]

Accumulated Other Comprehensive Loss

Note 16—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, 2018	$	(472	)	(228	)	8		(692	)
Other comprehensive income (loss) before reclassifications	5			(124	)	(6	)	(125	)
Amounts reclassified from accumulated other comprehensive loss
Defined benefit plans*
Amortization of net actuarial loss, prior service credit and settlements	40			—		—		40
Foreign currency translation	—			—		—		—
Hedging	—			—		(5	)	(5	)
Net current period other comprehensive income (loss)	45			(124	)	(11	)	(90	)
Income taxes reclassified to retained earnings**	(93		)	2		2		(89	)
September 30, 2019	$	(520	)	(350	)	(1	)	(871	)
December 31, 2017	$	(598	)	(26	)	7		(617	)
Other comprehensive income (loss) before reclassifications	10			(113	)	9		(94	)
Amounts reclassified from accumulated other comprehensive loss
Defined benefit plans*
Amortization of net actuarial loss, prior service credit and settlements	84			—		—		84
Foreign currency translation	—			(10	)	—		(10	)
Hedging	—			—		(2	)	(2	)
Net current period other comprehensive income (loss)	94			(123	)	7		(22	)
September 30, 2018	$	(504	)	(149	)	14		(639	)
* Included in the computation of net periodic benefit cost. See Note 15—Pension and Postretirement Plans, for additional information.
** As of January 1, 2019, stranded income taxes related to the enactment of the Tax Act in December 2017 were reclassified to retained earnings upon adoption of ASU No. 2018-02. See Note 2—Changes in Accounting Principles, for additional information on our adoption of this ASU.

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Income Taxes

9 Months Ended

Sep. 30, 2019

Income Tax Disclosure [Abstract]

Income Taxes

Note 20—Income Taxes

Our effective income tax rate for the three and nine months ended September 30, 2019, was 16% and 18%, respectively, compared with 21% for the corresponding periods of 2018. The decrease in our effective tax rate for the three months ended September 30, 2019, compared with the three months ended September 30, 2018, was primarily attributable to the impact of our foreign operations. The decrease in our effective tax rate for the nine months ended September 30, 2019, compared with the nine months ended September 30, 2018, was primarily attributable to an income tax benefit of $45 million recorded in the second quarter in connection with the Internal Revenue Service’s issuance of additional guidance related to the calculation of the one-time deemed repatriation tax on foreign-source earnings that were previously tax deferred, as well as the impact of our foreign operations.

The effective income tax rate for the three and nine months ended September 30, 2019, varies from the U.S. federal statutory income tax rate of 21%, primarily due to the impact of our foreign operations and income attributable to noncontrolling interests, partially offset by state income tax expense. For the nine months ended September 30, 2019, there was an additional reduction in the effective tax rate related to the aforementioned $45 million income tax benefit.

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Credit Losses

9 Months Ended

Sep. 30, 2019

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

Credit Losses

Note 4—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 reconciliation, dispute resolution and payment confirmation. We may employ collection agencies and legal counsel to pursue recovery of defaulted receivables.

At September 30, 2019, we reported $7,086 million of accounts and notes receivable, net of allowances of $41 million. Changes in the allowance were not material for the three and nine months ended September 30, 2019. Based on an aging analysis at September 30, 2019, 99% of our accounts receivable were outstanding less than 60 days, with the remainder outstanding less than 90 days.

We are also exposed to credit losses from off-balance sheet exposures, such as guarantees of joint venture debt, residual value guarantees of leased assets 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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Earnings Per Share

9 Months Ended

Sep. 30, 2019

Earnings Per Share [Abstract]

Earnings Per Share

Note 8—Earnings Per Share

The numerator of basic earnings per share (EPS) is net income attributable to Phillips 66, reduced by 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 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 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 September 30								Nine Months Ended September 30
	2019					2018			2019				2018
	Basic			Diluted		Basic		Diluted	Basic		Diluted		Basic		Diluted
Amounts attributed to Phillips 66 Common Stockholders (millions):
Net income attributable to Phillips 66	$	712		712		1,492		1,492	2,340		2,340		3,355		3,355
Income allocated to participating securities	(2		)	(1	)	(1	)	—	(5	)	(1	)	(4	)	—
Net income available to common stockholders	$	710		711		1,491		1,492	2,335		2,339		3,351		3,355
Weighted-average common shares outstanding (thousands):	446,498			449,005		463,002		466,109	450,836		453,398		470,471		473,760
Effect of share-based compensation	2,507			1,996		3,107		3,331	2,562		2,412		3,289		3,460
Weighted-average common shares outstanding—EPS	449,005			451,001		466,109		469,440	453,398		455,810		473,760		477,220
Earnings Per Share of Common Stock (dollars)	$	1.58		1.58		3.20		3.18	5.15		5.13		7.07		7.03

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Earnings Per Share (Tables)

9 Months Ended

Sep. 30, 2019

Earnings Per Share [Abstract]

Reconciliation of Basic and Diluted Earnings Per Share

	Three Months Ended September 30								Nine Months Ended September 30
	2019					2018			2019				2018
	Basic			Diluted		Basic		Diluted	Basic		Diluted		Basic		Diluted
Amounts attributed to Phillips 66 Common Stockholders (millions):
Net income attributable to Phillips 66	$	712		712		1,492		1,492	2,340		2,340		3,355		3,355
Income allocated to participating securities	(2		)	(1	)	(1	)	—	(5	)	(1	)	(4	)	—
Net income available to common stockholders	$	710		711		1,491		1,492	2,335		2,339		3,351		3,355
Weighted-average common shares outstanding (thousands):	446,498			449,005		463,002		466,109	450,836		453,398		470,471		473,760
Effect of share-based compensation	2,507			1,996		3,107		3,331	2,562		2,412		3,289		3,460
Weighted-average common shares outstanding—EPS	449,005			451,001		466,109		469,440	453,398		455,810		473,760		477,220
Earnings Per Share of Common Stock (dollars)	$	1.58		1.58		3.20		3.18	5.15		5.13		7.07		7.03

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Sales and Other Operating Revenues (Tables)

9 Months Ended

Sep. 30, 2019

Revenue from Contract with Customer [Abstract]

Disaggregation of Revenue

	Millions of Dollars
	Three Months Ended September 30			Nine Months Ended September 30
	2019		2018	2019	2018
Product Line and Services
Refined petroleum products	$	22,373	23,184	64,088	64,975
Crude oil resales	3,511		4,747	10,162	12,316
Natural gas liquids (NGL)	1,025		1,782	3,508	4,751
Services and other*	309		75	410	321
Consolidated sales and other operating revenues	$	27,218	29,788	78,168	82,363
Geographic Location**
United States	$	21,160	23,068	60,602	64,481
United Kingdom	2,375		3,085	7,318	7,623
Germany	1,025		1,135	3,074	3,174
Other foreign countries	2,658		2,500	7,174	7,085
Consolidated sales and other operating revenues	$	27,218	29,788	78,168	82,363
* 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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Changes in Accounting Principles (Policies)

9 Months Ended

Sep. 30, 2019

Accounting Changes and Error Corrections [Abstract]

Changes in Accounting Principles

Effective January 1, 2019, we elected to adopt Financial Accounting Standards Board (FASB) Accounting Standards Update (ASU) No. 2018-02, “Income Statement—Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income.” This ASU permits the deferred income tax effects stranded in accumulated other comprehensive income (AOCI) resulting from the U.S. Tax Cuts and Jobs Act (the Tax Act) enacted in December 2017 to be reclassified to retained earnings. As of January 1, 2019, we recorded a cumulative effect adjustment to our opening consolidated balance sheet to reclassify an aggregate income tax benefit of $89 million, primarily related to our pension plans, from accumulated other comprehensive loss to retained earnings.

Effective January 1, 2019, we early adopted ASU 2016-13, “Financial Instruments—Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments,” using the modified retrospective transition method. This ASU amends the impairment model to utilize an expected loss methodology in place of the incurred loss methodology for financial instruments, including trade receivables, and off-balance sheet credit exposures. The amendment requires entities to consider a broader range of information to estimate expected credit losses, which may result in earlier recognition of losses. We recorded a noncash cumulative effect adjustment to retained earnings of $9 million, net of $3 million of income taxes, on our opening consolidated balance sheet as of January 1, 2019. See Note 4—Credit Losses, for more information on our presentation of credit losses.

Effective January 1, 2019, we adopted ASU No. 2016-02, “Leases (Topic 842),” using the modified retrospective transition method. The new standard establishes a right-of-use (ROU) model that requires a lessee to record a ROU asset and a lease liability on the consolidated balance sheet for all leases with terms longer than 12 months. Leases will continue to be classified as either finance or operating, with classification affecting the pattern of expense recognition in the consolidated income statement.

We elected the package of practical expedients that allowed us to carry forward our determination of whether an arrangement contained a lease and lease classification, as well as our accounting for initial direct costs for existing contracts. We recorded a noncash cumulative effect adjustment to our opening consolidated balance sheet as of January 1, 2019, to record an aggregate operating lease ROU asset and corresponding lease liability of $1,415 million and immaterial adjustments to retained earnings and noncontrolling interests. See Note 14—Leases, for the new lease disclosures required by this ASU.

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Sales and Other Operating Revenues (Disaggregated) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Disaggregation of Revenue [Line Items]
Sales and other operating revenues	$ 27,218	$ 29,788	$ 78,168	$ 82,363
United States
Disaggregation of Revenue [Line Items]
Sales and other operating revenues	21,160	23,068	60,602	64,481
United Kingdom
Disaggregation of Revenue [Line Items]
Sales and other operating revenues	2,375	3,085	7,318	7,623
Germany
Disaggregation of Revenue [Line Items]
Sales and other operating revenues	1,025	1,135	3,074	3,174
Other foreign countries
Disaggregation of Revenue [Line Items]
Sales and other operating revenues	2,658	2,500	7,174	7,085
Refined petroleum products
Disaggregation of Revenue [Line Items]
Sales and other operating revenues	22,373	23,184	64,088	64,975
Crude oil resales
Disaggregation of Revenue [Line Items]
Sales and other operating revenues	3,511	4,747	10,162	12,316
Natural gas liquids (NGL)
Disaggregation of Revenue [Line Items]
Sales and other operating revenues	1,025	1,782	3,508	4,751
Services and other
Disaggregation of Revenue [Line Items]
Sales and other operating revenues	$ 309	$ 75	$ 410	$ 321

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Inventories (Narrative) (Details) - USD ($) $ in Millions	Sep. 30, 2019	Dec. 31, 2018
Inventory Disclosure [Abstract]
LIFO inventory amount	$ 5,103	$ 3,123
Excess over stated LIFO value	$ 4,400	$ 2,900

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Investments, Loans and Long-Term Receivables (Gray Oak Pipeline, LLC) (Details) - USD ($)	1 Months Ended	9 Months Ended
	Feb. 28, 2019	Sep. 30, 2019	Jul. 31, 2019	Jun. 30, 2019	Dec. 31, 2018
Third Party | Gray Oak Pipeline LLC
Schedule of Equity Method Investments [Line Items]
Percentage of ownership	10.00%
Gray Oak Pipeline LLC
Schedule of Equity Method Investments [Line Items]
Maximum loan			$ 1,317,000,000	$ 1,230,000,000
Repayments of related party debt		$ 95,000,000
Variable Interest Entity, Primary Beneficiary | Gray Oak Pipeline LLC
Schedule of Equity Method Investments [Line Items]
Guarantor obligations, current carrying value		$ 904,000,000
Variable Interest Entity, Primary Beneficiary | Phillips 66 Partners LP | Gray Oak Holdings LLC
Schedule of Equity Method Investments [Line Items]
Percentage of ownership interest		65.00%			75.00%
Variable Interest Entity, Primary Beneficiary | Phillips 66 Partners LP | Gray Oak Pipeline LLC
Schedule of Equity Method Investments [Line Items]
Proceeds from sale of equity method investments	$ 81,000,000
Percentage of ownership interest		42.25%
Maximum potential amount of future payments under the guarantees		$ 556,000,000
Guarantor obligations, current carrying value		382,000,000
Maximum loss exposure		1,130,000,000
Book value of investment		$ 748,000,000

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Condensed Consolidating Financial Information (Narrative) (Details)	9 Months Ended
	Sep. 30, 2019
Phillips 66 Company
Condensed Financial Statements, Captions [Line Items]
Ownership interest percentage	100.00%

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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, 2017	$ 27,428	$ 6	$ 19,768	$ (10,378)	$ 16,306	$ (617)	$ 2,343
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	3,557				3,355		202
Other comprehensive income (loss)	(22)					(22)
Dividends paid on common stock	(1,069)				(1,069)
Repurchase of common stock	(4,148)			(4,148)
Benefit plan activity	44		54		(10)
Issuance of Phillips 66 Partners LP common units	102		38				64
Distributions to noncontrolling interests	(146)						(146)
Ending Balance at Sep. 30, 2018	$ 25,795	6	19,860	(14,526)	18,618	(639)	2,476
Beginning balance, common stock issued (in shares) at Dec. 31, 2017	643,835,000
Beginning balance, treasury stock (in shares) at Dec. 31, 2017	141,565,000
Stockholders' Equity, Shares [Roll Forward]
Repurchase of common stock (in shares)	42,888,000
Shares issued - share-based compensation (in shares)	1,744,000
Ending balance, common stock issued (in shares) at Sep. 30, 2018	645,579,000
Ending balance, treasury stock (in shares) at Sep. 30, 2018	184,453,000
Beginning Balance at Jun. 30, 2018	$ 24,960	6	19,831	(14,121)	17,500	(680)	2,424
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	1,568				1,492		76
Other comprehensive income (loss)	41					41
Dividends paid on common stock	(370)				(370)
Repurchase of common stock	(405)			(405)
Benefit plan activity	9		13		(4)
Issuance of Phillips 66 Partners LP common units	42		16				26
Distributions to noncontrolling interests	(50)						(50)
Ending Balance at Sep. 30, 2018	$ 25,795	6	19,860	(14,526)	18,618	(639)	2,476
Beginning balance, common stock issued (in shares) at Jun. 30, 2018	645,215,000
Beginning balance, treasury stock (in shares) at Jun. 30, 2018	180,952,000
Stockholders' Equity, Shares [Roll Forward]
Repurchase of common stock (in shares)	3,501,000
Shares issued - share-based compensation (in shares)	364,000
Ending balance, common stock issued (in shares) at Sep. 30, 2018	645,579,000
Ending balance, treasury stock (in shares) at Sep. 30, 2018	184,453,000
Beginning Balance at Dec. 31, 2018	$ 27,153	6	19,873	(15,023)	20,489	(692)	2,500
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	2,567				2,340		227
Other comprehensive income (loss)	(90)					(90)
Dividends paid on common stock	(1,172)				(1,172)
Repurchase of common stock	(1,238)			(1,238)
Benefit plan activity	48		56		(8)
Issuance of Phillips 66 Partners LP common units	107		49				58
Impacts from Phillips 66 Partners GP/IDR restructuring transaction	(98)		275				(373)
Distributions to noncontrolling interests	(176)						(176)
Ending Balance at Sep. 30, 2019	$ 27,092	6	20,253	(16,261)	21,730	(871)	2,235
Beginning balance, common stock issued (in shares) at Dec. 31, 2018	645,691,761
Beginning balance, treasury stock (in shares) at Dec. 31, 2018	189,526,331
Stockholders' Equity, Shares [Roll Forward]
Repurchase of common stock (in shares)	13,167,000
Shares issued - share-based compensation (in shares)	1,359,000
Ending balance, common stock issued (in shares) at Sep. 30, 2019	647,050,977
Ending balance, treasury stock (in shares) at Sep. 30, 2019	202,693,401
Beginning Balance at Jun. 30, 2019	$ 27,306	6	19,912	(15,822)	21,423	(767)	2,554
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	793				712		81
Other comprehensive income (loss)	(104)					(104)
Dividends paid on common stock	(402)				(402)
Repurchase of common stock	(439)			(439)
Benefit plan activity	19		22		(3)
Issuance of Phillips 66 Partners LP common units	76		44				32
Impacts from Phillips 66 Partners GP/IDR restructuring transaction	(98)		275				(373)
Distributions to noncontrolling interests	(59)						(59)
Ending Balance at Sep. 30, 2019	$ 27,092	$ 6	$ 20,253	$ (16,261)	$ 21,730	$ (871)	$ 2,235
Beginning balance, common stock issued (in shares) at Jun. 30, 2019	646,828,000
Beginning balance, treasury stock (in shares) at Jun. 30, 2019	198,287,000
Stockholders' Equity, Shares [Roll Forward]
Repurchase of common stock (in shares)	4,406,000
Shares issued - share-based compensation (in shares)	223,000
Ending balance, common stock issued (in shares) at Sep. 30, 2019	647,050,977
Ending balance, treasury stock (in shares) at Sep. 30, 2019	202,693,401

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Pension and Postretirement Plans (Summary of Components of Net Periodic Benefit Cost) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Other Benefits
Components of Net Periodic Benefit Cost
Service cost	$ 1	$ 2	$ 4	$ 5
Interest cost	2	1	6	5
Expected return on plan assets	0	0	0	0
Amortization of prior service credit	0	0	(1)	(1)
Recognized net actuarial loss	0	0	0	0
Settlements	0	0	0	0
Net periodic benefit cost	3	3	9	9
U.S. | Pension Benefits
Components of Net Periodic Benefit Cost
Service cost	32	34	95	102
Interest cost	27	26	81	78
Expected return on plan assets	(36)	(42)	(107)	(127)
Amortization of prior service credit	0	0	0	0
Recognized net actuarial loss	14	14	40	44
Settlements	1	49	7	54
Net periodic benefit cost	38	81	116	151
Int’l. | Pension Benefits
Components of Net Periodic Benefit Cost
Service cost	5	5	17	22
Interest cost	6	6	19	21
Expected return on plan assets	(10)	(11)	(33)	(35)
Amortization of prior service credit	0	0	0	(1)
Recognized net actuarial loss	2	5	5	15
Settlements	0	0	0	0
Net periodic benefit cost	$ 3	$ 5	$ 8	$ 22

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Leases (Lease Costs) (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2019
Leases [Abstract]
Amortization of right-of-use assets	$ 5	$ 15
Interest on lease liabilities	2	5
Total finance lease cost	7	20
Operating lease cost	126	386
Short-term lease cost	29	93
Variable lease cost	6	18
Sublease income	(4)	(14)
Total net lease cost	$ 164	$ 503

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Consolidated Statement of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Statement of Comprehensive Income [Abstract]
Net Income	$ 793	$ 1,568	$ 2,567	$ 3,557
Defined benefit plans
Amortization to income of net actuarial loss, prior service credit and settlements	17	68	51	111
Plans sponsored by equity affiliates	2	4	7	13
Income taxes on defined benefit plans	(4)	(18)	(13)	(30)
Defined benefit plans, net of income taxes	15	54	45	94
Foreign currency translation adjustments	(119)	(15)	(124)	(125)
Income taxes on foreign currency translation adjustments	1	1	0	2
Foreign currency translation adjustments, net of income taxes	(118)	(14)	(124)	(123)
Cash flow hedges	(2)	2	(13)	10
Income taxes on hedging activities	1	(1)	2	(3)
Hedging activities, net of income taxes	(1)	1	(11)	7
Other Comprehensive Income (Loss), Net of Income Taxes	(104)	41	(90)	(22)
Comprehensive Income	689	1,609	2,477	3,535
Less: comprehensive income attributable to noncontrolling interests	81	76	227	202
Comprehensive Income Attributable to Phillips 66	$ 608	$ 1,533	$ 2,250	$ 3,333

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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		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Analysis of results by operating segment
Sales and other operating revenues	$ 27,218	$ 29,788	$ 78,168	$ 82,363
Consolidated income before income taxes	943	1,975	3,112	4,527
Analysis of results of assets by operating segment
Total Assets	58,741		58,741		$ 54,302
Midstream
Analysis of results by operating segment
Sales and other operating revenues	1,120	1,763	3,682	4,679
Consolidated income before income taxes	(460)	284	279	802
Analysis of results of assets by operating segment
Total Assets	15,209		15,209		14,329
Chemicals
Analysis of results by operating segment
Consolidated income before income taxes	227	263	729	873
Analysis of results of assets by operating segment
Total Assets	6,269		6,269		6,235
Refining
Analysis of results by operating segment
Sales and other operating revenues	8,139	9,142	22,831	24,680
Consolidated income before income taxes	856	1,232	1,641	2,534
Analysis of results of assets by operating segment
Total Assets	25,280		25,280		23,230
Marketing and Specialties
Analysis of results by operating segment
Sales and other operating revenues	17,951	18,875	51,631	52,979
Consolidated income before income taxes	498	423	1,056	968
Analysis of results of assets by operating segment
Total Assets	8,338		8,338		6,572
Operating Segments | Midstream
Analysis of results by operating segment
Sales and other operating revenues	1,602	2,287	5,208	6,234
Operating Segments | Chemicals
Analysis of results by operating segment
Sales and other operating revenues	1	1	3	4
Operating Segments | Refining
Analysis of results by operating segment
Sales and other operating revenues	19,591	21,949	56,839	61,707
Operating Segments | Marketing and Specialties
Analysis of results by operating segment
Sales and other operating revenues	18,535	19,332	53,464	54,471
Intersegment eliminations | Midstream
Analysis of results by operating segment
Sales and other operating revenues	(482)	(524)	(1,526)	(1,555)
Intersegment eliminations | Refining
Analysis of results by operating segment
Sales and other operating revenues	(11,452)	(12,807)	(34,008)	(37,027)
Intersegment eliminations | Marketing and Specialties
Analysis of results by operating segment
Sales and other operating revenues	(584)	(457)	(1,833)	(1,492)
Corporate and Other
Analysis of results by operating segment
Sales and other operating revenues	7	7	21	21
Consolidated income before income taxes	(178)	$ (227)	(593)	$ (650)
Analysis of results of assets by operating segment
Total Assets	$ 3,645		$ 3,645		$ 3,936

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Inventories

9 Months Ended

Sep. 30, 2019

Inventory Disclosure [Abstract]

Inventories

Note 5—Inventories

Inventories consisted of the following:

	Millions of Dollars
	September 30 2019		December 31 2018
Crude oil and petroleum products	$	5,208	3,238
Materials and supplies	313		305
	$	5,521	3,543

Inventories valued on the last-in, first-out (LIFO) basis totaled $5,103 million and $3,123 million at September 30, 2019, and December 31, 2018, respectively. The estimated excess of current replacement cost over LIFO cost of inventories amounted to approximately $4.4 billion and $2.9 billion at September 30, 2019, and December 31, 2018, respectively.

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Debt

9 Months Ended

Sep. 30, 2019

Debt Disclosure [Abstract]

Debt

Note 9—Debt

2019 Activities

Debt Issuances and Repayments

On September 6, 2019, Phillips 66 Partners closed on a public offering of $900 million aggregate principal amount of unsecured notes consisting of:

• $300 million aggregate principal amount of 2.450% Senior Notes due December 15, 2024.

• $600 million aggregate principal amount of 3.150% Senior Notes due December 15, 2029.

Interest on each series of senior notes is payable semi-annually in arrears on June 15 and December 15 of each year, commencing on June 15, 2020. On September 13, 2019, Phillips 66 Partners used a portion of the net proceeds to repay the $400 million outstanding principal balance of its term loans due March 2020, and on October 15, 2019, Phillips 66 Partners used a portion of the net proceeds to repay the $300 million outstanding principal balance of its 2.646% Senior Notes due February 2020.

Credit Agreement Amendment and Restatement

On July 30, 2019, we amended and restated our revolving credit agreement. The agreement extended the scheduled maturity from October 3, 2021, to July 30, 2024. No other material amendments were made to the agreement, and the overall capacity remains at $5 billion with an option to increase the overall capacity to $6 billion, subject to certain conditions. 

On July 30, 2019, Phillips 66 Partners amended and restated its revolving credit agreement. The agreement extended the scheduled maturity from October 3, 2021, to July 30, 2024. No other material amendments were made to the agreement, and the overall capacity remains at $750 million with an option to increase the overall capacity to $1 billion, subject to certain conditions.

Phillips 66’s revolving credit facility had no outstanding balance at September 30, 2019, and December 31, 2018. Phillips 66 Partners’ revolving credit facility had no amount directly drawn at September 30, 2019, compared with borrowings of $125 million at December 31, 2018.

2018 Activities

Debt Issuances and Repayments

On March 1, 2018, Phillips 66 closed on a public offering of $1,500 million aggregate principal amount of unsecured notes consisting of:

• $500 million of floating-rate Senior Notes due February 2021. Interest on these notes is equal to the three-month London Interbank Offered Rate (LIBOR) plus 0.60% per annum and is payable quarterly in arrears on February 26, May 26, August 26 and November 26, beginning on May 29, 2018.

• $800 million of 3.900% Senior Notes due March 2028. Interest on these notes is payable semiannually on March 15 and September 15 of each year, beginning on September 15, 2018.

• An additional $200 million of our 4.875% Senior Notes due November 2044. Interest on these notes is payable semiannually on May 15 and November 15 of each year, beginning on May 15, 2018.

These notes are guaranteed by Phillips 66 Company, a wholly owned subsidiary. Phillips 66 used the net proceeds from the issuance of these notes and cash on hand to repay commercial paper borrowings during the three months ended March 31, 2018, and for general corporate purposes. The commercial paper borrowings during the three months ended March 31, 2018, were primarily used to fund a Stock Purchase and Sale Agreement (Purchase Agreement). See Note 17—Treasury Stock, for additional information.

In June 2018, Phillips 66 repaid $250 million of the $450 million outstanding under its three-year term loan facility due April 2020.

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Fair Value Measurements (Policies)

9 Months Ended

Sep. 30, 2019

Fair Value Disclosures [Abstract]

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. For the nine months ended September 30, 2019, derivative assets with an aggregate value of $117 million and derivative liabilities with an aggregate value of $82 million were transferred to Level 1 from Level 2, as measured from the beginning of the reporting period. The measurements were reclassified within the fair value hierarchy due to the availability of unadjusted quoted prices from an active market.

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 non-exchange 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 mid-market pricing convention (the mid-point 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 observed 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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Condensed Consolidating Financial Information

9 Months Ended

Sep. 30, 2019

Condensed Financial Information Disclosure [Abstract]

Condensed Consolidating Financial Information

Note 22—Condensed Consolidating Financial Information

Phillips 66 has senior notes outstanding, the payment obligations of which are fully and unconditionally guaranteed by Phillips 66 Company, a 100% owned subsidiary. The following condensed consolidating financial information presents the results of operations, financial position and cash flows for:

• Phillips 66 and Phillips 66 Company (in each case, reflecting investments in subsidiaries utilizing the equity method of accounting).

• All other nonguarantor subsidiaries.

• The consolidating adjustments necessary to present Phillips 66’s results on a consolidated basis.

This condensed consolidating financial information should be read in conjunction with the accompanying consolidated financial statements and notes.

	Millions of Dollars
	Three Months Ended September 30, 2019
Statement of Income	Phillips 66			Phillips 66 Company	All Other Subsidiaries		Consolidating Adjustments		Total Consolidated
Revenues and Other Income
Sales and other operating revenues	$	—		20,947	6,271		—		27,218
Equity in earnings of affiliates	781			214	147		(643	)	499
Net gain on dispositions	—			1	17		—		18
Other income	—			25	11		—		36
Intercompany revenues	—			837	3,704		(4,541	)	—
Total Revenues and Other Income	781			22,024	10,150		(5,184	)	27,771
Costs and Expenses
Purchased crude oil and products	—			19,383	8,866		(4,443	)	23,806
Operating expenses	—			959	264		(17	)	1,206
Selling, general and administrative expenses	1			324	94		(3	)	416
Depreciation and amortization	—			230	106		—		336
Impairments	—			—	853		—		853
Taxes other than income taxes	—			77	28		—		105
Accretion on discounted liabilities	—			4	2		—		6
Interest and debt expense	85			35	67		(78	)	109
Foreign currency transaction gains	—			—	(9	)	—		(9	)
Total Costs and Expenses	86			21,012	10,271		(4,541	)	26,828
Income (loss) before income taxes	695			1,012	(121	)	(643	)	943
Income tax expense (benefit)	(17		)	231	(64	)	—		150
Net Income (Loss)	712			781	(57	)	(643	)	793
Less: net income attributable to noncontrolling interests	—			—	81		—		81
Net Income (Loss) Attributable to Phillips 66	$	712		781	(138	)	(643	)	712
Comprehensive Income (Loss)	$	608		677	(170	)	(426	)	689

	Millions of Dollars
	Three Months Ended September 30, 2018
Statement of Income	Phillips 66			Phillips 66 Company	All Other Subsidiaries	Consolidating Adjustments		Total Consolidated
Revenues and Other Income
Sales and other operating revenues	$	—		22,866	6,922	—		29,788
Equity in earnings of affiliates	1,573			1,160	186	(2,140	)	779
Net gain on dispositions	—			—	1	—		1
Other income	—			23	1	—		24
Intercompany revenues	—			1,091	4,371	(5,462	)	—
Total Revenues and Other Income	1,573			25,140	11,481	(7,602	)	30,592
Costs and Expenses
Purchased crude oil and products	—			21,656	10,095	(5,366	)	26,385
Operating expenses	—			946	280	(20	)	1,206
Selling, general and administrative expenses	2			338	103	(3	)	440
Depreciation and amortization	—			232	114	—		346
Impairments	—			1	—	—		1
Taxes other than income taxes	—			84	25	—		109
Accretion on discounted liabilities	—			4	1	—		5
Interest and debt expense	100			36	62	(73	)	125
Total Costs and Expenses	102			23,297	10,680	(5,462	)	28,617
Income before income taxes	1,471			1,843	801	(2,140	)	1,975
Income tax expense (benefit)	(21		)	270	158	—		407
Net Income	1,492			1,573	643	(2,140	)	1,568
Less: net income attributable to noncontrolling interests	—			—	76	—		76
Net Income Attributable to Phillips 66	$	1,492		1,573	567	(2,140	)	1,492
Comprehensive Income	$	1,533		1,614	635	(2,173	)	1,609

	Millions of Dollars
	Nine Months Ended September 30, 2019
Statement of Income	Phillips 66			Phillips 66 Company	All Other Subsidiaries	Consolidating Adjustments		Total Consolidated
Revenues and Other Income
Sales and other operating revenues	$	—		60,060	18,108	—		78,168
Equity in earnings of affiliates	2,557			1,645	514	(3,053	)	1,663
Net gain on dispositions	—			1	18	—		19
Other income	—			67	30	—		97
Intercompany revenues	—			2,720	11,014	(13,734	)	—
Total Revenues and Other Income	2,557			64,493	29,684	(16,787	)	79,947
Costs and Expenses
Purchased crude oil and products	—			56,648	26,202	(13,435	)	69,415
Operating expenses	—			2,876	861	(59	)	3,678
Selling, general and administrative expenses	5			898	295	(8	)	1,190
Depreciation and amortization	—			686	315	—		1,001
Impairments	—			1	855	—		856
Taxes other than income taxes	—			242	88	—		330
Accretion on discounted liabilities	—			13	4	—		17
Interest and debt expense	267			108	200	(232	)	343
Foreign currency transaction losses	—			—	5	—		5
Total Costs and Expenses	272			61,472	28,825	(13,734	)	76,835
Income before income taxes	2,285			3,021	859	(3,053	)	3,112
Income tax expense (benefit)	(55		)	464	136	—		545
Net Income	2,340			2,557	723	(3,053	)	2,567
Less: net income attributable to noncontrolling interests	—			—	227	—		227
Net Income Attributable to Phillips 66	$	2,340		2,557	496	(3,053	)	2,340
Comprehensive Income	$	2,250		2,467	615	(2,855	)	2,477

	Millions of Dollars
	Nine Months Ended September 30, 2018
Statement of Income	Phillips 66			Phillips 66 Company	All Other Subsidiaries		Consolidating Adjustments		Total Consolidated
Revenues and Other Income
Sales and other operating revenues	$	—		63,703	18,660		—		82,363
Equity in earnings of affiliates	3,600			2,638	566		(4,858	)	1,946
Net gain on dispositions	—			7	11		—		18
Other income	—			25	22		—		47
Intercompany revenues	—			2,456	11,386		(13,842	)	—
Total Revenues and Other Income	3,600			68,829	30,645		(18,700	)	84,374
Costs and Expenses
Purchased crude oil and products	—			59,724	27,113		(13,567	)	73,270
Operating expenses	—			2,771	875		(51	)	3,595
Selling, general and administrative expenses	6			966	294		(8	)	1,258
Depreciation and amortization	—			691	328		—		1,019
Impairments	—			2	5		—		7
Taxes other than income taxes	—			248	80		—		328
Accretion on discounted liabilities	—			13	4		—		17
Interest and debt expense	304			108	187		(216	)	383
Foreign currency transaction gains	—			—	(30	)	—		(30	)
Total Costs and Expenses	310			64,523	28,856		(13,842	)	79,847
Income before income taxes	3,290			4,306	1,789		(4,858	)	4,527
Income tax expense (benefit)	(65		)	706	329		—		970
Net Income	3,355			3,600	1,460		(4,858	)	3,557
Less: net income attributable to noncontrolling interests	—			—	202		—		202
Net Income Attributable to Phillips 66	$	3,355		3,600	1,258		(4,858	)	3,355
Comprehensive Income	$	3,333		3,578	1,357		(4,733	)	3,535

	Millions of Dollars
	September 30, 2019
Balance Sheet	Phillips 66			Phillips 66 Company		All Other Subsidiaries		Consolidating Adjustments		Total Consolidated
Assets
Cash and cash equivalents	$	—		576		1,692		—		2,268
Accounts and notes receivable	—			5,316		4,106		(2,336	)	7,086
Inventories	—			3,673		1,848		—		5,521
Prepaid expenses and other current assets	—			525		217		—		742
Total Current Assets	—			10,090		7,863		(2,336	)	15,617
Investments and long-term receivables	33,126			24,034		9,884		(52,897	)	14,147
Net properties, plants and equipment	—			13,350		9,604		—		22,954
Goodwill	—			2,853		417		—		3,270
Intangibles	—			732		140		—		872
Other assets	12			5,882		729		(4,742	)	1,881
Total Assets	$	33,138		56,941		28,637		(59,975	)	58,741
Liabilities and Equity
Accounts payable	$	—		6,944		3,765		(2,336	)	8,373
Short-term debt	500			11		331		—		842
Accrued income and other taxes	—			672		456		—		1,128
Employee benefit obligations	—			569		55		—		624
Other accruals	133			1,310		262		(589	)	1,116
Total Current Liabilities	633			9,506		4,869		(2,925	)	12,083
Long-term debt	7,433			55		3,595		—		11,083
Asset retirement obligations and accrued environmental costs	—			453		164		—		617
Deferred income taxes	—			3,761		1,743		(1	)	5,503
Employee benefit obligations	—			725		180		—		905
Other liabilities and deferred credits	185			9,448		5,351		(13,526	)	1,458
Total Liabilities	8,251			23,948		15,902		(16,452	)	31,649
Common stock	3,998			25,802		9,239		(35,041	)	3,998
Retained earnings	21,760			8,062		1,662		(9,754	)	21,730
Accumulated other comprehensive loss	(871		)	(871	)	(401	)	1,272		(871	)
Noncontrolling interests	—			—		2,235		—		2,235
Total Liabilities and Equity	$	33,138		56,941		28,637		(59,975	)	58,741

	Millions of Dollars
	December 31, 2018
Balance Sheet	Phillips 66			Phillips 66 Company		All Other Subsidiaries		Consolidating Adjustments		Total Consolidated
Assets
Cash and cash equivalents	$	—		1,648		1,371		—		3,019
Accounts and notes receivable	9			4,255		3,202		(1,293	)	6,173
Inventories	—			2,489		1,054		—		3,543
Prepaid expenses and other current assets	2			373		99		—		474
Total Current Assets	11			8,765		5,726		(1,293	)	13,209
Investments and long-term receivables	32,712			22,799		9,829		(50,919	)	14,421
Net properties, plants and equipment	—			13,218		8,800		—		22,018
Goodwill	—			2,853		417		—		3,270
Intangibles	—			726		143		—		869
Other assets	9			335		173		(2	)	515
Total Assets	$	32,732		48,696		25,088		(52,214	)	54,302
Liabilities and Equity
Accounts payable	$	—		5,415		2,464		(1,293	)	6,586
Short-term debt	—			11		56		—		67
Accrued income and other taxes	—			458		658		—		1,116
Employee benefit obligations	—			663		61		—		724
Other accruals	66			227		149		—		442
Total Current Liabilities	66			6,774		3,388		(1,293	)	8,935
Long-term debt	7,928			54		3,111		—		11,093
Asset retirement obligations and accrued environmental costs	—			458		166		—		624
Deferred income taxes	1			3,541		1,735		(2	)	5,275
Employee benefit obligations	—			676		191		—		867
Other liabilities and deferred credits	55			4,611		4,287		(8,598	)	355
Total Liabilities	8,050			16,114		12,878		(9,893	)	27,149
Common stock	4,856			24,960		8,754		(33,714	)	4,856
Retained earnings	20,518			8,314		1,249		(9,592	)	20,489
Accumulated other comprehensive loss	(692		)	(692	)	(293	)	985		(692	)
Noncontrolling interests	—			—		2,500		—		2,500
Total Liabilities and Equity	$	32,732		48,696		25,088		(52,214	)	54,302

	Millions of Dollars
	Nine Months Ended September 30, 2019
Statement of Cash Flows	Phillips 66			Phillips 66 Company		All Other Subsidiaries		Consolidating Adjustments		Total Consolidated
Cash Flows From Operating Activities
Net Cash Provided by (Used in) Operating Activities	$	(143	)	1,645		1,730		(118	)	3,114
Cash Flows From Investing Activities
Capital expenditures and investments	—			(803	)	(1,792	)	—		(2,595	)
Proceeds from asset dispositions*	—			352		137		(350	)	139
Intercompany lending activities	2,587			(2,245	)	(342	)	—		—
Advances/loans—related parties	—			—		(95	)	—		(95	)
Collection of advances/loans—related parties	—			—		95		—		95
Other	—			(3	)	27		—		24
Net Cash Provided by (Used in) Investing Activities	2,587			(2,699	)	(1,970	)	(350	)	(2,432	)
Cash Flows From Financing Activities
Issuance of debt	—			—		1,758		—		1,758
Repayment of debt	—			(14	)	(990	)	—		(1,004	)
Issuance of common stock	15			—		—		—		15
Repurchase of common stock	(1,238		)	—		—		—		(1,238	)
Dividends paid on common stock	(1,172		)	—		(118	)	118		(1,172	)
Distributions to noncontrolling interests	—			—		(176	)	—		(176	)
Net proceeds from issuance of Phillips 66 Partners LP common units	—			—		133		—		133
Other	(49		)	(4	)	(15	)	350		282
Net Cash Provided by (Used in) Financing Activities	(2,444		)	(18	)	592		468		(1,402	)
Effect of Exchange Rate Changes on Cash and Cash Equivalents	—			—		(31	)	—		(31	)
Net Change in Cash and Cash Equivalents	—			(1,072	)	321		—		(751	)
Cash and cash equivalents at beginning of period	—			1,648		1,371		—		3,019
Cash and Cash Equivalents at End of Period	$	—		576		1,692		—		2,268
* Includes return of investments in equity affiliates.

	Millions of Dollars
	Nine Months Ended September 30, 2018
Statement of Cash Flows	Phillips 66			Phillips 66 Company		All Other Subsidiaries		Consolidating Adjustments		Total Consolidated
Cash Flows From Operating Activities
Net Cash Provided by Operating Activities	$	3,094		3,070		1,425		(4,155	)	3,434
Cash Flows From Investing Activities
Capital expenditures and investments	—			(633	)	(1,012	)	—		(1,645	)
Proceeds from asset dispositions*	—			328		36		(325	)	39
Intercompany lending activities	904			(510	)	(394	)	—		—
Advances/loans—related parties	—			(1	)	—		—		(1	)
Other	—			(6	)	73		—		67
Net Cash Provided by (Used in) Investing Activities	904			(822	)	(1,297	)	(325	)	(1,540	)
Cash Flows From Financing Activities
Issuance of debt	1,509			—		85		—		1,594
Repayment of debt	(250		)	(9	)	(115	)	—		(374	)
Issuance of common stock	39			—		—		—		39
Repurchase of common stock	(4,148		)	—		—		—		(4,148	)
Dividends paid on common stock	(1,069		)	(3,174	)	(981	)	4,155		(1,069	)
Distributions to noncontrolling interests	—			—		(146	)	—		(146	)
Net proceeds from issuance of Phillips 66 Partners LP common units	—			—		114		—		114
Other	(79		)	—		(325	)	325		(79	)
Net Cash Used in Financing Activities	(3,998		)	(3,183	)	(1,368	)	4,480		(4,069	)
Effect of Exchange Rate Changes on Cash and Cash Equivalents	—			—		(20	)	—		(20	)
Net Change in Cash and Cash Equivalents	—			(935	)	(1,260	)	—		(2,195	)
Cash and cash equivalents at beginning of period	—			1,411		1,708		—		3,119
Cash and Cash Equivalents at End of Period	$	—		476		448		—		924
* Includes return of investments in equity affiliates.

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Properties, Plants and Equipment (Tables)

9 Months Ended

Sep. 30, 2019

Property, Plant and Equipment [Abstract]

Properties, Plants and Equipment with Associated Accumulated Depreciation and Amortization

	Millions of Dollars
	September 30, 2019				December 31, 2018
	Gross PP&E		Accum. D&A	Net PP&E	Gross PP&E	Accum. D&A	Net PP&E
Midstream	$	10,759	2,316	8,443	9,663	2,100	7,563
Chemicals	—		—	—	—	—	—
Refining	23,189		10,084	13,105	22,640	9,531	13,109
Marketing and Specialties	1,656		927	729	1,671	926	745
Corporate and Other	1,309		632	677	1,223	622	601
	$	36,913	13,959	22,954	35,197	13,179	22,018

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Investments, Loans and Long-Term Receivables (OnCue Holdings, LLC) (Details) - OnCue Holdings LLC $ in Millions	Sep. 30, 2019 USD ($)
Schedule of Equity Method Investments [Line Items]
Percentage of ownership	50.00%
Maximum loss exposure	$ 139
Equity investments	76
Maximum exposure, debt obligation	$ 63

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Sales and Other Operating Revenues (Narrative) (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2019	Dec. 31, 2018
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Accounts receivable	$ 5,585	$ 4,993
Receivables from contracts with customers	311	248
Contract with customer, liability	$ 218	$ 99
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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Investments, Loans and Long-Term Receivables (Summary of Equity Method Investments) (Details) - CPChem - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Summary of financial information
Revenues	$ 2,369	$ 3,195	$ 7,209	$ 8,773
Income before income taxes	475	552	1,522	1,819
Net income	$ 456	$ 531	$ 1,464	$ 1,766

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Phillips 66 Partners LP (Schedule of Assets and Liabilities) (Details) - USD ($) $ in Millions	Sep. 30, 2019	Dec. 31, 2018
Variable Interest Entity [Line Items]
Cash and cash equivalents	$ 2,268	$ 3,019
Net properties, plants and equipment	22,954	22,018
Phillips 66 Partners LP | Variable Interest Entity, Primary Beneficiary
Variable Interest Entity [Line Items]
Cash and cash equivalents	655	1
Equity investments	2,921	2,448
Net properties, plants and equipment	3,258	3,052
Short-term debt	325	50
Long-term debt	$ 3,490	$ 2,998

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Leases (Lease Term and Discount Rate) (Details)	Sep. 30, 2019
Leases [Abstract]
Weighted-average remaining lease term—finance leases (years)	12 years 8 months 12 days
Weighted-average remaining lease term—operating leases (years)	5 years 6 months
Weighted-average discount rate—finance leases (percent)	3.70%
Weighted-average discount rate—operating leases (percent)	3.90%

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Consolidated Statement of Cash Flows - USD ($) $ in Millions		9 Months Ended
		Sep. 30, 2019	Sep. 30, 2018
Cash Flows From Operating Activities
Net income		$ 2,567	$ 3,557
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation and amortization		1,001	1,019
Impairments		856	7
Accretion on discounted liabilities		17	17
Deferred income taxes		115	229
Undistributed equity earnings		(25)	111
Net gain on dispositions		(19)	(18)
Other		(97)	118
Working capital adjustments
Accounts and notes receivable		(909)	(478)
Inventories		(2,004)	(2,178)
Prepaid expenses and other current assets		(269)	(509)
Accounts payable		1,778	1,280
Taxes and other accruals		103	279
Net Cash Provided by Operating Activities		3,114	3,434
Cash Flows From Investing Activities
Capital expenditures and investments		(2,595)	(1,645)
Proceeds from asset dispositions	[1]	139	39
Advances/loans—related parties		(95)	(1)
Collection of advances/loans—related parties		95	0
Other		24	67
Net Cash Used in Investing Activities		(2,432)	(1,540)
Cash Flows From Financing Activities
Issuance of debt		1,758	1,594
Repayment of debt		(1,004)	(374)
Issuance of common stock		15	39
Repurchase of common stock		(1,238)	(4,148)
Dividends paid on common stock		(1,172)	(1,069)
Distributions to noncontrolling interests		(176)	(146)
Net proceeds from issuance of Phillips 66 Partners LP common units		133	114
Other		282	(79)
Net Cash Used in Financing Activities		(1,402)	(4,069)
Effect of Exchange Rate Changes on Cash and Cash Equivalents		(31)	(20)
Net Change in Cash and Cash Equivalents		(751)	(2,195)
Cash and cash equivalents at beginning of period		3,019	3,119
Cash and Cash Equivalents at End of Period		$ 2,268	$ 924

[1] Includes return of investments in equity affiliates.

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Consolidated Statement of Income - USD ($) shares in Thousands, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Revenues and Other Income
Sales and other operating revenues	$ 27,218	$ 29,788	$ 78,168	$ 82,363
Equity in earnings of affiliates	499	779	1,663	1,946
Net gain on dispositions	18	1	19	18
Other income	36	24	97	47
Total Revenues and Other Income	27,771	30,592	79,947	84,374
Costs and Expenses
Purchased crude oil and products	23,806	26,385	69,415	73,270
Operating expenses	1,206	1,206	3,678	3,595
Selling, general and administrative expenses	416	440	1,190	1,258
Depreciation and amortization	336	346	1,001	1,019
Impairments	853	1	856	7
Taxes other than income taxes	105	109	330	328
Accretion on discounted liabilities	6	5	17	17
Interest and debt expense	109	125	343	383
Foreign currency transaction (gains) losses	(9)	0	5	(30)
Total Costs and Expenses	26,828	28,617	76,835	79,847
Income before income taxes	943	1,975	3,112	4,527
Income tax expense	150	407	545	970
Net Income	793	1,568	2,567	3,557
Less: net income attributable to noncontrolling interests	81	76	227	202
Net Income Attributable to Phillips 66	$ 712	$ 1,492	$ 2,340	$ 3,355
Net Income Attributable to Phillips 66 Per Share of Common Stock
Basic (in usd per share)	$ 1.58	$ 3.20	$ 5.15	$ 7.07
Diluted (in usd per share)	$ 1.58	$ 3.18	$ 5.13	$ 7.03
Weighted-Average Common Shares Outstanding
Basic (in shares)	449,005	466,109	453,398	473,760
Diluted (in shares)	451,001	469,440	455,810	477,220

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(Summary of Leases) (Details) - USD ($) $ in Millions	Sep. 30, 2019	Jan. 01, 2019
Finance Leases
Remainder of 2019	$ 4
2020	19
2021	18
2022	15
2023	15
Remaining years	135
Future minimum lease payments	206
Amount representing interest or discounts	(40)
Total lease liabilities	166
Operating Leases
Remainder of 2019	126
2020	469
2021	245
2022	157
2023	102
Remaining years	355
Future minimum lease payments	1,454
Amount representing interest or discounts	(166)
Total lease liabilities	$ 1,288	$ 1,415

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Segment Disclosures and Related Information (Narrative) (Details)	9 Months Ended
	Sep. 30, 2019 refinery
Midstream | DCP Midstream
Segment Disclosures And Related Information (Textual) [Abstract]
Percentage of ownership interest	50.00%
Chemicals | CP Chem
Segment Disclosures And Related Information (Textual) [Abstract]
Percentage of ownership interest	50.00%
Refining | Mainly United States And Europe
Segment Disclosures And Related Information (Textual) [Abstract]
Number of refineries	13

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Accumulated Other Comprehensive Loss (Tables)

9 Months Ended

Sep. 30, 2019

Equity [Abstract]

Summary of Changes in and Reclassifications Out of Accumulated Other Comprehensive Income (Loss) by Component

	Millions of Dollars
	Defined Benefit Plans			Foreign Currency Translation		Hedging		Accumulated Other Comprehensive Loss
December 31, 2018	$	(472	)	(228	)	8		(692	)
Other comprehensive income (loss) before reclassifications	5			(124	)	(6	)	(125	)
Amounts reclassified from accumulated other comprehensive loss
Defined benefit plans*
Amortization of net actuarial loss, prior service credit and settlements	40			—		—		40
Foreign currency translation	—			—		—		—
Hedging	—			—		(5	)	(5	)
Net current period other comprehensive income (loss)	45			(124	)	(11	)	(90	)
Income taxes reclassified to retained earnings**	(93		)	2		2		(89	)
September 30, 2019	$	(520	)	(350	)	(1	)	(871	)
December 31, 2017	$	(598	)	(26	)	7		(617	)
Other comprehensive income (loss) before reclassifications	10			(113	)	9		(94	)
Amounts reclassified from accumulated other comprehensive loss
Defined benefit plans*
Amortization of net actuarial loss, prior service credit and settlements	84			—		—		84
Foreign currency translation	—			(10	)	—		(10	)
Hedging	—			—		(2	)	(2	)
Net current period other comprehensive income (loss)	94			(123	)	7		(22	)
September 30, 2018	$	(504	)	(149	)	14		(639	)
* Included in the computation of net periodic benefit cost. See Note 15—Pension and Postretirement Plans, for additional information.
** As of January 1, 2019, stranded income taxes related to the enactment of the Tax Act in December 2017 were reclassified to retained earnings upon adoption of ASU No. 2018-02. See Note 2—Changes in Accounting Principles, for additional information on our adoption of this ASU.

XML

Derivatives and Financial Instruments (Tables)

9 Months Ended

Sep. 30, 2019

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Fair Value, by Balance Sheet Grouping

	Millions of Dollars
	September 30, 2019								December 31, 2018
	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	$	1,018	(856	)	(5	)	157		1,257	(1,070	)	(89	)	98
Other assets	4		(1	)	—		3		2	—		—		2
Liabilities
Other accruals	454		(542	)	70		(18	)	—	(23	)	—		(23	)
Other liabilities and deferred credits	35		(37	)	—		(2	)	5	(7	)	—		(2	)
Total	$	1,511	(1,436	)	65		140		1,264	(1,100	)	(89	)	75

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

	Millions of Dollars
	Three Months Ended September 30				Nine Months Ended September 30
	2019		2018		2019		2018
Sales and other operating revenues	$	71	(98	)	(89	)	(227	)
Other income	20		3		33		(17	)
Purchased crude oil and products	60		(138	)	(41	)	(311	)
Net gain (loss) from commodity derivative activity	$	151	(233	)	(97	)	(555	)

Summary of Material Net Exposures and Notional Amount of Derivative Contracts

	Open Position Long / (Short)
	September 30 2019		December 31 2018
Commodity
Crude oil, refined petroleum products and NGL (millions of barrels)	(35	)	(17	)

XML

Condensed Consolidating Financial Information (Tables)

9 Months Ended

Sep. 30, 2019

Condensed Financial Information Disclosure [Abstract]

Condensed Consolidating Statement of Income

	Millions of Dollars
	Three Months Ended September 30, 2019
Statement of Income	Phillips 66			Phillips 66 Company	All Other Subsidiaries		Consolidating Adjustments		Total Consolidated
Revenues and Other Income
Sales and other operating revenues	$	—		20,947	6,271		—		27,218
Equity in earnings of affiliates	781			214	147		(643	)	499
Net gain on dispositions	—			1	17		—		18
Other income	—			25	11		—		36
Intercompany revenues	—			837	3,704		(4,541	)	—
Total Revenues and Other Income	781			22,024	10,150		(5,184	)	27,771
Costs and Expenses
Purchased crude oil and products	—			19,383	8,866		(4,443	)	23,806
Operating expenses	—			959	264		(17	)	1,206
Selling, general and administrative expenses	1			324	94		(3	)	416
Depreciation and amortization	—			230	106		—		336
Impairments	—			—	853		—		853
Taxes other than income taxes	—			77	28		—		105
Accretion on discounted liabilities	—			4	2		—		6
Interest and debt expense	85			35	67		(78	)	109
Foreign currency transaction gains	—			—	(9	)	—		(9	)
Total Costs and Expenses	86			21,012	10,271		(4,541	)	26,828
Income (loss) before income taxes	695			1,012	(121	)	(643	)	943
Income tax expense (benefit)	(17		)	231	(64	)	—		150
Net Income (Loss)	712			781	(57	)	(643	)	793
Less: net income attributable to noncontrolling interests	—			—	81		—		81
Net Income (Loss) Attributable to Phillips 66	$	712		781	(138	)	(643	)	712
Comprehensive Income (Loss)	$	608		677	(170	)	(426	)	689

	Millions of Dollars
	Three Months Ended September 30, 2018
Statement of Income	Phillips 66			Phillips 66 Company	All Other Subsidiaries	Consolidating Adjustments		Total Consolidated
Revenues and Other Income
Sales and other operating revenues	$	—		22,866	6,922	—		29,788
Equity in earnings of affiliates	1,573			1,160	186	(2,140	)	779
Net gain on dispositions	—			—	1	—		1
Other income	—			23	1	—		24
Intercompany revenues	—			1,091	4,371	(5,462	)	—
Total Revenues and Other Income	1,573			25,140	11,481	(7,602	)	30,592
Costs and Expenses
Purchased crude oil and products	—			21,656	10,095	(5,366	)	26,385
Operating expenses	—			946	280	(20	)	1,206
Selling, general and administrative expenses	2			338	103	(3	)	440
Depreciation and amortization	—			232	114	—		346
Impairments	—			1	—	—		1
Taxes other than income taxes	—			84	25	—		109
Accretion on discounted liabilities	—			4	1	—		5
Interest and debt expense	100			36	62	(73	)	125
Total Costs and Expenses	102			23,297	10,680	(5,462	)	28,617
Income before income taxes	1,471			1,843	801	(2,140	)	1,975
Income tax expense (benefit)	(21		)	270	158	—		407
Net Income	1,492			1,573	643	(2,140	)	1,568
Less: net income attributable to noncontrolling interests	—			—	76	—		76
Net Income Attributable to Phillips 66	$	1,492		1,573	567	(2,140	)	1,492
Comprehensive Income	$	1,533		1,614	635	(2,173	)	1,609

	Millions of Dollars
	Nine Months Ended September 30, 2019
Statement of Income	Phillips 66			Phillips 66 Company	All Other Subsidiaries	Consolidating Adjustments		Total Consolidated
Revenues and Other Income
Sales and other operating revenues	$	—		60,060	18,108	—		78,168
Equity in earnings of affiliates	2,557			1,645	514	(3,053	)	1,663
Net gain on dispositions	—			1	18	—		19
Other income	—			67	30	—		97
Intercompany revenues	—			2,720	11,014	(13,734	)	—
Total Revenues and Other Income	2,557			64,493	29,684	(16,787	)	79,947
Costs and Expenses
Purchased crude oil and products	—			56,648	26,202	(13,435	)	69,415
Operating expenses	—			2,876	861	(59	)	3,678
Selling, general and administrative expenses	5			898	295	(8	)	1,190
Depreciation and amortization	—			686	315	—		1,001
Impairments	—			1	855	—		856
Taxes other than income taxes	—			242	88	—		330
Accretion on discounted liabilities	—			13	4	—		17
Interest and debt expense	267			108	200	(232	)	343
Foreign currency transaction losses	—			—	5	—		5
Total Costs and Expenses	272			61,472	28,825	(13,734	)	76,835
Income before income taxes	2,285			3,021	859	(3,053	)	3,112
Income tax expense (benefit)	(55		)	464	136	—		545
Net Income	2,340			2,557	723	(3,053	)	2,567
Less: net income attributable to noncontrolling interests	—			—	227	—		227
Net Income Attributable to Phillips 66	$	2,340		2,557	496	(3,053	)	2,340
Comprehensive Income	$	2,250		2,467	615	(2,855	)	2,477

	Millions of Dollars
	Nine Months Ended September 30, 2018
Statement of Income	Phillips 66			Phillips 66 Company	All Other Subsidiaries		Consolidating Adjustments		Total Consolidated
Revenues and Other Income
Sales and other operating revenues	$	—		63,703	18,660		—		82,363
Equity in earnings of affiliates	3,600			2,638	566		(4,858	)	1,946
Net gain on dispositions	—			7	11		—		18
Other income	—			25	22		—		47
Intercompany revenues	—			2,456	11,386		(13,842	)	—
Total Revenues and Other Income	3,600			68,829	30,645		(18,700	)	84,374
Costs and Expenses
Purchased crude oil and products	—			59,724	27,113		(13,567	)	73,270
Operating expenses	—			2,771	875		(51	)	3,595
Selling, general and administrative expenses	6			966	294		(8	)	1,258
Depreciation and amortization	—			691	328		—		1,019
Impairments	—			2	5		—		7
Taxes other than income taxes	—			248	80		—		328
Accretion on discounted liabilities	—			13	4		—		17
Interest and debt expense	304			108	187		(216	)	383
Foreign currency transaction gains	—			—	(30	)	—		(30	)
Total Costs and Expenses	310			64,523	28,856		(13,842	)	79,847
Income before income taxes	3,290			4,306	1,789		(4,858	)	4,527
Income tax expense (benefit)	(65		)	706	329		—		970
Net Income	3,355			3,600	1,460		(4,858	)	3,557
Less: net income attributable to noncontrolling interests	—			—	202		—		202
Net Income Attributable to Phillips 66	$	3,355		3,600	1,258		(4,858	)	3,355
Comprehensive Income	$	3,333		3,578	1,357		(4,733	)	3,535

Condensed Consolidating Balance Sheet

	Millions of Dollars
	September 30, 2019
Balance Sheet	Phillips 66			Phillips 66 Company		All Other Subsidiaries		Consolidating Adjustments		Total Consolidated
Assets
Cash and cash equivalents	$	—		576		1,692		—		2,268
Accounts and notes receivable	—			5,316		4,106		(2,336	)	7,086
Inventories	—			3,673		1,848		—		5,521
Prepaid expenses and other current assets	—			525		217		—		742
Total Current Assets	—			10,090		7,863		(2,336	)	15,617
Investments and long-term receivables	33,126			24,034		9,884		(52,897	)	14,147
Net properties, plants and equipment	—			13,350		9,604		—		22,954
Goodwill	—			2,853		417		—		3,270
Intangibles	—			732		140		—		872
Other assets	12			5,882		729		(4,742	)	1,881
Total Assets	$	33,138		56,941		28,637		(59,975	)	58,741
Liabilities and Equity
Accounts payable	$	—		6,944		3,765		(2,336	)	8,373
Short-term debt	500			11		331		—		842
Accrued income and other taxes	—			672		456		—		1,128
Employee benefit obligations	—			569		55		—		624
Other accruals	133			1,310		262		(589	)	1,116
Total Current Liabilities	633			9,506		4,869		(2,925	)	12,083
Long-term debt	7,433			55		3,595		—		11,083
Asset retirement obligations and accrued environmental costs	—			453		164		—		617
Deferred income taxes	—			3,761		1,743		(1	)	5,503
Employee benefit obligations	—			725		180		—		905
Other liabilities and deferred credits	185			9,448		5,351		(13,526	)	1,458
Total Liabilities	8,251			23,948		15,902		(16,452	)	31,649
Common stock	3,998			25,802		9,239		(35,041	)	3,998
Retained earnings	21,760			8,062		1,662		(9,754	)	21,730
Accumulated other comprehensive loss	(871		)	(871	)	(401	)	1,272		(871	)
Noncontrolling interests	—			—		2,235		—		2,235
Total Liabilities and Equity	$	33,138		56,941		28,637		(59,975	)	58,741

	Millions of Dollars
	December 31, 2018
Balance Sheet	Phillips 66			Phillips 66 Company		All Other Subsidiaries		Consolidating Adjustments		Total Consolidated
Assets
Cash and cash equivalents	$	—		1,648		1,371		—		3,019
Accounts and notes receivable	9			4,255		3,202		(1,293	)	6,173
Inventories	—			2,489		1,054		—		3,543
Prepaid expenses and other current assets	2			373		99		—		474
Total Current Assets	11			8,765		5,726		(1,293	)	13,209
Investments and long-term receivables	32,712			22,799		9,829		(50,919	)	14,421
Net properties, plants and equipment	—			13,218		8,800		—		22,018
Goodwill	—			2,853		417		—		3,270
Intangibles	—			726		143		—		869
Other assets	9			335		173		(2	)	515
Total Assets	$	32,732		48,696		25,088		(52,214	)	54,302
Liabilities and Equity
Accounts payable	$	—		5,415		2,464		(1,293	)	6,586
Short-term debt	—			11		56		—		67
Accrued income and other taxes	—			458		658		—		1,116
Employee benefit obligations	—			663		61		—		724
Other accruals	66			227		149		—		442
Total Current Liabilities	66			6,774		3,388		(1,293	)	8,935
Long-term debt	7,928			54		3,111		—		11,093
Asset retirement obligations and accrued environmental costs	—			458		166		—		624
Deferred income taxes	1			3,541		1,735		(2	)	5,275
Employee benefit obligations	—			676		191		—		867
Other liabilities and deferred credits	55			4,611		4,287		(8,598	)	355
Total Liabilities	8,050			16,114		12,878		(9,893	)	27,149
Common stock	4,856			24,960		8,754		(33,714	)	4,856
Retained earnings	20,518			8,314		1,249		(9,592	)	20,489
Accumulated other comprehensive loss	(692		)	(692	)	(293	)	985		(692	)
Noncontrolling interests	—			—		2,500		—		2,500
Total Liabilities and Equity	$	32,732		48,696		25,088		(52,214	)	54,302

Condensed Consolidating Statement of Cash Flows

	Millions of Dollars
	Nine Months Ended September 30, 2019
Statement of Cash Flows	Phillips 66			Phillips 66 Company		All Other Subsidiaries		Consolidating Adjustments		Total Consolidated
Cash Flows From Operating Activities
Net Cash Provided by (Used in) Operating Activities	$	(143	)	1,645		1,730		(118	)	3,114
Cash Flows From Investing Activities
Capital expenditures and investments	—			(803	)	(1,792	)	—		(2,595	)
Proceeds from asset dispositions*	—			352		137		(350	)	139
Intercompany lending activities	2,587			(2,245	)	(342	)	—		—
Advances/loans—related parties	—			—		(95	)	—		(95	)
Collection of advances/loans—related parties	—			—		95		—		95
Other	—			(3	)	27		—		24
Net Cash Provided by (Used in) Investing Activities	2,587			(2,699	)	(1,970	)	(350	)	(2,432	)
Cash Flows From Financing Activities
Issuance of debt	—			—		1,758		—		1,758
Repayment of debt	—			(14	)	(990	)	—		(1,004	)
Issuance of common stock	15			—		—		—		15
Repurchase of common stock	(1,238		)	—		—		—		(1,238	)
Dividends paid on common stock	(1,172		)	—		(118	)	118		(1,172	)
Distributions to noncontrolling interests	—			—		(176	)	—		(176	)
Net proceeds from issuance of Phillips 66 Partners LP common units	—			—		133		—		133
Other	(49		)	(4	)	(15	)	350		282
Net Cash Provided by (Used in) Financing Activities	(2,444		)	(18	)	592		468		(1,402	)
Effect of Exchange Rate Changes on Cash and Cash Equivalents	—			—		(31	)	—		(31	)
Net Change in Cash and Cash Equivalents	—			(1,072	)	321		—		(751	)
Cash and cash equivalents at beginning of period	—			1,648		1,371		—		3,019
Cash and Cash Equivalents at End of Period	$	—		576		1,692		—		2,268
* Includes return of investments in equity affiliates.

	Millions of Dollars
	Nine Months Ended September 30, 2018
Statement of Cash Flows	Phillips 66			Phillips 66 Company		All Other Subsidiaries		Consolidating Adjustments		Total Consolidated
Cash Flows From Operating Activities
Net Cash Provided by Operating Activities	$	3,094		3,070		1,425		(4,155	)	3,434
Cash Flows From Investing Activities
Capital expenditures and investments	—			(633	)	(1,012	)	—		(1,645	)
Proceeds from asset dispositions*	—			328		36		(325	)	39
Intercompany lending activities	904			(510	)	(394	)	—		—
Advances/loans—related parties	—			(1	)	—		—		(1	)
Other	—			(6	)	73		—		67
Net Cash Provided by (Used in) Investing Activities	904			(822	)	(1,297	)	(325	)	(1,540	)
Cash Flows From Financing Activities
Issuance of debt	1,509			—		85		—		1,594
Repayment of debt	(250		)	(9	)	(115	)	—		(374	)
Issuance of common stock	39			—		—		—		39
Repurchase of common stock	(4,148		)	—		—		—		(4,148	)
Dividends paid on common stock	(1,069		)	(3,174	)	(981	)	4,155		(1,069	)
Distributions to noncontrolling interests	—			—		(146	)	—		(146	)
Net proceeds from issuance of Phillips 66 Partners LP common units	—			—		114		—		114
Other	(79		)	—		(325	)	325		(79	)
Net Cash Used in Financing Activities	(3,998		)	(3,183	)	(1,368	)	4,480		(4,069	)
Effect of Exchange Rate Changes on Cash and Cash Equivalents	—			—		(20	)	—		(20	)
Net Change in Cash and Cash Equivalents	—			(935	)	(1,260	)	—		(2,195	)
Cash and cash equivalents at beginning of period	—			1,411		1,708		—		3,119
Cash and Cash Equivalents at End of Period	$	—		476		448		—		924
* Includes return of investments in equity affiliates.

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Guarantees (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2019	Dec. 31, 2018
Guarantor Obligations [Line Items]
Environmental accruals included in recorded carrying amount	$ 447	$ 447
Indemnifications
Guarantor Obligations [Line Items]
Carrying amount of indemnifications	159	171
Asset Retirement Obligations And Accrued Environmental Cost | Indemnifications
Guarantor Obligations [Line Items]
Environmental accruals included in recorded carrying amount	110	$ 101
Facilities | Residual Value Guarantees
Guarantor Obligations [Line Items]
Maximum potential amount of future payments under the guarantees	554
Railcar and Airplane | Residual Value Guarantees
Guarantor Obligations [Line Items]
Maximum potential amount of future payments under the guarantees	$ 344
Lessee leasing arrangements, operating leases, term of contract	5 years
Other Joint Ventures | Other Guarantees
Guarantor Obligations [Line Items]
Maximum potential amount of future payments under the guarantees	$ 135
Maximum | Facilities
Guarantor Obligations [Line Items]
Lessee leasing arrangements, operating leases, term of contract	5 years
Maximum | Other Joint Ventures
Guarantor Obligations [Line Items]
Joint venture debt obligations, period	6 years
Variable Interest Entity, Primary Beneficiary | Gray Oak Pipeline LLC
Guarantor Obligations [Line Items]
Carrying amount of indemnifications	$ 904
Variable Interest Entity, Primary Beneficiary | Phillips 66 Partners LP | Gray Oak Pipeline LLC
Guarantor Obligations [Line Items]
Percentage of ownership interest	42.25%
Maximum potential amount of future payments under the guarantees	$ 556
Carrying amount of indemnifications	$ 382

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Derivatives and Financial Instruments (Narrative) (Details) - USD ($)	Sep. 30, 2019	Dec. 31, 2018
Financial instruments and derivative contracts (Textual) [Abstract]
Percentage of derivative contract volume expiring within twelve months (at least)	97.00%	97.00%
Cash Flow Hedging | Interest rate derivatives
Financial instruments and derivative contracts (Textual) [Abstract]
Derivative, notional amount	$ 650,000,000
Designated as Hedging Instrument | Cash Flow Hedging | Interest rate derivatives
Financial instruments and derivative contracts (Textual) [Abstract]
Derivative, fair value, net	1,000,000	$ 15,000,000
General and Administrative Expenses | Designated as Hedging Instrument | Cash Flow Hedging | Interest rate derivatives
Financial instruments and derivative contracts (Textual) [Abstract]
Gain reclassified from AOCI into income	$ 1,000,000
Maximum | Facilities
Financial instruments and derivative contracts (Textual) [Abstract]
Lessee leasing arrangements, operating leases, term of contract	5 years

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Label	Element	Value
Noncontrolling Interest [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	$ (1,000,000)
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	13,000,000
AOCI Attributable to Parent [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	$ (89,000,000)

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Phillips 66 Partners LP

9 Months Ended

Sep. 30, 2019

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

Phillips 66 Partners LP

Note 21—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 consist of crude oil, refined petroleum product and NGL transportation, terminaling, processing 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 September 30, 2019, we owned a 75% limited partner interest in Phillips 66 Partners, while the public owned a 25% 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
	September 30 2019		December 31 2018
Cash and cash equivalents	$	655	1
Equity investments*	2,921		2,448
Net properties, plants and equipment	3,258		3,052
Short-term debt	325		50
Long-term debt	3,490		2,998
* Included in “Investments and long-term receivables” line on the Phillips 66 consolidated balance sheet.

2019 Activities

For the three and nine months ended September 30, 2019, on a settlement-date basis, Phillips 66 Partners generated net proceeds of $91 million and $133 million, respectively, from common units issued under its continuous offering of common units, or at-the-market (ATM) programs. For the three and nine months ended September 30, 2018, Phillips 66 Partners generated net proceeds of $47 million and $114 million, respectively, under its ATM programs.

Phillips 66 Partners holds an investment in the Gray Oak Pipeline through Holdings LLC. In December 2018, a third party exercised its option to acquire a 35% interest in Holdings LLC. Because Holdings LLC’s sole asset was its ownership interest in Gray Oak, which is considered a financial asset, and because certain restrictions were placed on the third party’s ability to transfer or sell its interest in Holdings LLC during the construction of the Gray Oak Pipeline, the legal sale of the 35% interest did not qualify as a sale under GAAP. As such, the contributions the third party is making to Holdings LLC to cover its share of previously incurred and future construction costs plus a premium to Phillips 66 Partners are reflected as a long-term obligation in the “Other liabilities and deferred credits” line on our consolidated balance sheet and financing cash inflows in the “Other” line on our consolidated statement of cash flows. After construction of the Gray Oak Pipeline is fully completed, these restrictions expire, and the sale will be recognized under GAAP. Phillips 66 Partners will continue to control and consolidate Holdings LLC after sale recognition, and therefore the third party’s 35% interest will be recharacterized from a long-term obligation to a noncontrolling interest on our consolidated balance sheet at that time. Also at that time, the premium paid will be recharacterized from a long-term obligation to a gain in our consolidated statement of income. For the nine months ended September 30, 2019, the third party contributed an aggregate of $341 million into Holdings LLC, which Holdings LLC used to fund its portion of Gray Oak’s cash calls. See Note 6—Investments, Loans and Long-Term Receivables, for further discussion regarding Phillips 66 Partners’ investment in Gray Oak.

Restructuring Transaction

On August 1, 2019, Phillips 66 Partners completed a restructuring transaction to eliminate the IDRs held by us and convert our 2% economic general partner interest into a non-economic general partner interest in exchange for 101 million Phillips 66 Partners’ common units.  As a result of the restructuring transaction, the balance of “Noncontrolling interests” on our consolidated balance sheet decreased $373 million, with a $275 million increase to “Capital in excess of par,” a $91 million increase in “Deferred income taxes” and $7 million of transaction costs. No distributions will be made on the general partner interest after August 1, 2019. At September 30, 2019, we owned 170 million Phillips 66 Partners’ common units, representing 75% of Phillips 66 Partners’ outstanding common units.

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Fair Value Measurements

9 Months Ended

Sep. 30, 2019

Fair Value Disclosures [Abstract]

Fair Value Measurements

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. For the nine months ended September 30, 2019, derivative assets with an aggregate value of $117 million and derivative liabilities with an aggregate value of $82 million were transferred to Level 1 from Level 2, as measured from the beginning of the reporting period. The measurements were reclassified within the fair value hierarchy due to the availability of unadjusted quoted prices from an active market.

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 non-exchange 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 mid-market pricing convention (the mid-point 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 observed 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
	September 30, 2019
	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	$	788	657	—	1,445	(1,346	)	(5	)	—		94
OTC instruments	—		1	—	1	—		—		—		1
Physical forward contracts	—		64	1	65	—		—		—		65
Interest rate derivatives	—		1	—	1	—		—		—		1
Rabbi trust assets	122		—	—	122	N/A		N/A		—		122
	$	910	723	1	1,634	(1,346	)	(5	)	—		283
Commodity Derivative Liabilities
Exchange-cleared instruments	$	748	669	—	1,417	(1,346	)	(70	)	—		1
OTC instruments	—		3	—	3	—		—		—		3
Physical forward contracts	—		16	—	16	—		—		—		16
Floating-rate debt	—		1,075	—	1,075	N/A		N/A		—		1,075
Fixed-rate debt, excluding capital leases	—		12,050	—	12,050	N/A		N/A		(1,377	)	10,673
	$	748	13,813	—	14,561	(1,346	)	(70	)	(1,377	)	11,768

	Millions of Dollars
	December 31, 2018
	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	$	674	547	—	1,221	(1,075	)	(89	)	—	57
Physical forward contracts	—		39	4	43	—		—		—	43
Interest rate derivatives	—		15	—	15	—		—		—	15
Rabbi trust assets	104		—	—	104	N/A		N/A		—	104
	$	778	601	4	1,383	(1,075	)	(89	)	—	219
Commodity Derivative Liabilities
Exchange-cleared instruments	$	605	472	—	1,077	(1,075	)	—		—	2
Physical forward contracts	—		20	—	20	—		—		—	20
OTC instruments	—		3	—	3	—		—		—	3
Floating-rate debt	—		1,200	—	1,200	N/A		N/A		—	1,200
Fixed-rate debt, excluding capital leases	—		9,727	—	9,727	N/A		N/A		49	9,776
	$	605	11,422	—	12,027	(1,075	)	—		49	11,001

The rabbi trust assets are recorded in the “Investments and long-term receivables” line and floating-rate and fixed-rate debt are recorded in the “Short-term debt” and “Long-term debt” lines 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

The nonrecurring fair value measurement used to record an impairment of our DCP Midstream investment consisted of two valuations: 

• The fair value of our share of DCP Midstream’s limited partner interest in DCP Partners was estimated based on an average market price of DCP Partners’ common units for a 20 day trading period encompassing September 30, 2019.

• The fair value of our share of DCP Midstream’s general partner interest in DCP Partners was estimated using two primary inputs: 1) estimated future cash flows of distributions attributable to the incentive distribution rights (IDRs) from DCP Partners, and 2) a multiple of those cash flows based on internal estimates and observation of IDR conversion transactions by other master limited partnerships.

Taken together, we concluded the two valuations above resulted in an overall Level 3 nonrecurring fair value measurement. See Note 6—Investments, Loans and Long-Term Receivables, for additional information on the impairment.

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Treasury Stock

9 Months Ended

Sep. 30, 2019

Equity [Abstract]

Treasury Stock

Note 17—Treasury Stock

In February 2018, we entered into a Purchase Agreement with Berkshire Hathaway Inc. and National Indemnity Company, a wholly owned subsidiary of Berkshire Hathaway Inc., to repurchase 35,000,000 shares of Phillips 66 common stock for an aggregate purchase price of $3,280 million. Pursuant to the Purchase Agreement, the purchase price per share of $93.725 was based on the volume-weighted-average price of our common stock on the New York Stock Exchange on February 13, 2018. The transaction closed in February 2018. We funded the repurchase with cash of $1,880 million and borrowings of $1,400 million under our commercial paper program. These borrowings were subsequently refinanced through a public offering of senior notes in March 2018. This specific share repurchase transaction was separately authorized by our Board of Directors and therefore did not impact previously announced authorizations to repurchase shares of Phillips 66 common stock under our share repurchase programs.

On October 4, 2019, our Board of Directors approved a new share repurchase program that authorizes us to repurchase up to $3 billion of our common stock, bringing the total amount of share repurchases authorized by our Board of Directors since July 2012 to an aggregate of $15 billion.