Phillips 66 (PSX) 10-Q 1 May 14 2014 Q1 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	3 Months Ended
	Mar. 31, 2014
Document and Entity Information [Abstract]	'
Entity Registrant Name	'Phillips 66
Entity Central Index Key	'0001534701
Trading Symbol	'PSX
Current Fiscal Year End Date	'--12-31
Entity Filer Category	'Large Accelerated Filer
Document Type	'10-Q
Document Period End Date	31-Mar-14
Document Fiscal Year Focus	'2014
Document Fiscal Period Focus	'Q1
Amendment Flag	'false
Entity Common Stock, Shares Outstanding	565,845,802

Consolidated_Statement_of_Inco

Consolidated Statement of Income (USD $)	3 Months Ended
In Millions, except Share data in Thousands, unless otherwise specified	Mar. 31, 2014		Mar. 31, 2013
Sales and other operating revenues	'		'
Sales and other operating revenues	$40,283	[1]	$41,211	[1]
Equity in earnings of affiliates	778		1,039
Net gain on dispositions	7		1
Other income	31		23
Total Revenues and Other Income	41,099		42,274
Costs and Expenses	'		'
Purchased crude oil and products	34,381		35,243
Operating expenses	1,090		978
Selling, general and administrative expenses	402		327
Depreciation and amortization	234		242
Impairments	1		24
Taxes other than income taxes	3,638	[1]	3,324	[1]
Accretion on discounted liabilities	6		6
Interest and debt expense	68		70
Foreign currency transaction (gains) losses	-19		2
Total Costs and Expenses	39,801		40,216
Income from continuing operations before income taxes	1,298		2,058
Provision for income taxes	426		663
Income From Continuing Operations	872		1,395
Income from discontinued operations	706	[2]	15	[2]
Net Income	1,578		1,410
Less: net income attributable to noncontrolling interests	6		3
Net Income Attributable to Phillips 66	1,572		1,407
Amounts Attributable to Phillips 66 Common Stockholders:	'		'
Income from continuing operations	866		1,392
Income from discontinued operations	$706		$15
Basic	'		'
Continuing operations	$1.48		$2.23
Discontinued operations	$1.21		$0.02
Net Income Attributable to Phillips 66 Per Share of Common Stock	$2.69		$2.25
Diluted	'		'
Continuing operations	$1.47		$2.21
Discontinued operations	$1.20		$0.02
Net Income Attributable to Phillips 66 Per Share of Common Stock	$2.67		$2.23
Dividends Paid Per Share of Common Stock (dollars)	$0.39		$0.31
Average Common Shares Outstanding (in thousands)	'		'
Basic	584,053		625,030
Diluted	589,575		631,288
[1]	Includes excise taxes on petroleum products sales: $3,522 million, $3,258 million
[2]	Net of provision for income taxes on discontinued operations: $5 million, $8 million

Consolidated_Statement_of_Inco1

Consolidated Statement of Income (Parenthetical) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Income Statement [Abstract]	'	'
Includes excise taxes on petroleum products sales	$3,522	$3,258
Net of provision for income taxes on discontinued operations	$5	$8

Consolidated_Statement_of_Comp

Consolidated Statement of Comprehensive Income (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Statement of Comprehensive Income [Abstract]	'	'
Net Income	$1,578	$1,410
Actuarial gain/loss:	'	'
Amortization to net income of net actuarial loss	12	26
Plans sponsored by equity affiliates	3	-13
Income taxes on defined benefit plans	-5	-3
Defined benefit plans, net of tax	10	10
Foreign currency translation adjustments	31	-322
Income taxes on foreign currency translation adjustments	-1	4
Foreign currency translation adjustments, net of tax	30	-318
Other Comprehensive Income (Loss), Net of Tax	40	-308
Comprehensive Income	1,618	1,102
Less: comprehensive income attributable to noncontrolling interests	6	3
Comprehensive Income Attributable to Phillips 66	$1,612	$1,099

Consolidated_Balance_Sheet

Consolidated Balance Sheet (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Assets	'	'
Cash and cash equivalents	$5,326	$5,400
Accounts and notes receivable (net of allowances of $47 million in 2014 and 2013)	7,298	7,900
Accounts and notes receivable - related parties	1,822	1,732
Inventories	5,908	3,354
Prepaid expenses and other current assets	705	851
Total Current Assets	21,059	19,237
Investments and long-term receivables	10,001	11,220
Net properties, plants and equipment	15,751	15,398
Goodwill	3,141	3,096
Intangibles	737	698
Other assets	158	149
Total Assets	50,847	49,798
Liabilities	'	'
Accounts payable	11,390	9,948
Accounts payable - related parties	1,233	1,142
Short-term debt	40	24
Accrued income and other taxes	1,591	872
Employee benefit obligations	232	476
Other accruals	678	469
Total Current Liabilities	15,164	12,931
Long-term debt	6,177	6,131
Asset retirement obligations and accrued environmental costs	697	700
Deferred income taxes	5,692	6,125
Employee benefit obligations	793	921
Other liabilities and deferred credits	495	598
Total Liabilities	29,018	27,406
Equity	'	'
Common stock (2,500,000,000 shares authorized at $.01 par value) Issued (2014—635,784,906 shares; 2013—634,285,955 shares)	6	6
Capital in excess of par	18,932	18,887
Treasury stock (at cost: 2014—69,939,104 shares; 2013—44,106,380 shares)	-4,592	-2,602
Retained earnings	6,962	5,622
Accumulated other comprehensive loss	77	37
Total Stockholders' Equity	21,385	21,950
Noncontrolling interests	444	442
Total Equity	21,829	22,392
Total Liabilities and Equity	$50,847	$49,798

Consolidated_Balance_Sheet_Par

Consolidated Balance Sheet (Parenthetical) (USD $)	Dec. 31, 2013
In Millions, except Share data, unless otherwise specified
Accounts and notes receivable - allowance	$47
Common stock, shares authorized	2,500,000,000
Common stock, par value	$0.01
Common stock, shares Issued	634,285,955
Treasury stock, shares	44,106,380

Consolidated_Statement_of_Cash

Consolidated Statement of Cash Flows (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014		Mar. 31, 2013
Net Cash Provided by (Used in) Operating Activities, Continuing Operations [Abstract]	'		'
Net income	$1,578		$1,410
Adjustments to reconcile net income to net cash provided by operating activities	'		'
Depreciation and amortization	234		242
Impairments	1		24
Accretion on discounted liabilities	6		6
Deferred taxes	-444		82
Undistributed equity earnings	632		77
Net gain on dispositions	-7		-1
Income from discontinued operations	-706	[1]	-15	[1]
Other	-21		-34
Working capital adjustments	'		'
Decrease (increase) in accounts and notes receivable	619		283
Decrease (increase) in inventories	-2,567		-2,443
Decrease (increase) in prepaid expenses and other current assets	-132		-71
Increase (decrease) in accounts payable	1,505		2,465
Increase (decrease) in taxes and other accruals	698		166
Net cash provided by continuing operating activities	1,396		2,191
Net cash provided by discontinued operations	2		22
Net Cash Provided by Operating Activities	1,398		2,213
Net Cash Provided by (Used in) Investing Activities, Continuing Operations [Abstract]	'		'
Capital expenditures and investments	-572		-382
Proceeds from asset dispositions	507		9
Collection of advances/loans—related parties	'		55
Payments for (Proceeds from) Other Investing Activities	13		0
Net cash used in continuing investing activities	-52		-318
Net cash used in discontinued operations	-34		-5
Net Cash Used in Investing Activities	-86		-323
Net Cash Provided by (Used in) Financing Activities, Continuing Operations [Abstract]	'		'
Repayment of debt	-8		-3
Issuance of common stock	-20		-6
Repurchase of common stock	-640		-382
Share exchange—PSPI transaction	-450		'
Dividends paid on common stock	-229		-194
Distributions to noncontrolling interests	-4		0
Other	-4		0
Net cash used in continuing financing activities	-1,355		-585
Net cash provided by (used in) discontinued operations	0		0
Net Cash Used in Financing Activities	-1,355		-585
Effect of Exchange Rate Changes on Cash and Cash Equivalents	-31		-26
Net Change in Cash and Cash Equivalents	-74		1,279
Cash and cash equivalents at beginning of period	5,400		3,474
Cash and Cash Equivalents at End of Period	$5,326		$4,753
[1]	Net of provision for income taxes on discontinued operations: $5 million, $8 million

Consolidated_Statement_of_Chan

Consolidated Statement of Changes in Equity (USD $)	Total	Par Value [Member]	Capital in Excess of Par [Member]	Treasury Stock [Member]	TreasuryStockRepurchasePlan [Member]	TreasuryStockReceivedOnDisposition [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Noncontrolling Interests [Member]
In Millions, except Share data, unless otherwise specified
Beginning Balance at Dec. 31, 2012	$20,806	$6	$18,726	($356)	'	'	$2,713	($314)	$31
Beginning Balance, Treasury shares at Dec. 31, 2012	7,603,896	'	'	'	'	'	'	'	'
Beginning Balance, Common shares at Dec. 31, 2012	631,149,613	'	'	'	'	'	'	'	'
Net income	1,410	'	'	'	'	'	1,407	'	3
Other comprehensive income (Loss)	-308	'	'	'	'	'	'	-308	'
Cash dividends paid on common stock	-194	'	'	'	'	'	-194	'	'
Repurchase of common stock	-382	'	'	-382	'	'	'	'	'
Benefit plan activity	'	'	52	'	'	'	'	'	'
Benefit plan activity	'	'	'	'	'	'	-3	'	'
Benefit plan activity	49	'	'	'	'	'	'	'	'
Distributions to noncontrolling interests and other	'	'	-3	'	'	'	'	'	'
Distributions to noncontrolling interests and other	'	'	'	'	'	'	'	'	'
Distributions to noncontrolling interests and other	3	'	'	'	'	'	'	'	'
Shares	'	'	'	'	'	'	'	'	'
Shares issued - stock-based compensation	2,089,000	'	'	'	'	'	'	'	'
Repurchase of common stock, shares	6,403,000	'	'	'	'	'	'	'	'
Ending Balance at Mar. 31, 2013	21,378	6	18,775	-738	'	'	3,923	-622	34
Ending Balance, Treasury shares at Mar. 31, 2013	14,007,000	'	'	'	'	'	'	'	'
Ending Balance, Common shares at Mar. 31, 2013	633,239,000	'	'	'	'	'	'	'	'
Beginning Balance at Dec. 31, 2013	22,392	6	18,887	-2,602	'	'	5,622	37	442
Beginning Balance, Treasury shares at Dec. 31, 2013	44,106,380	'	'	'	'	'	'	'	'
Beginning Balance, Common shares at Dec. 31, 2013	634,285,955	'	'	'	'	'	'	'	'
Net income	1,578	'	'	'	'	'	1,572	'	6
Other comprehensive income (Loss)	40	'	'	'	'	'	'	40	'
Cash dividends paid on common stock	-229	'	'	'	'	'	-229	'	'
Repurchase of common stock	'	'	'	'	-640	-1,350	'	'	'
Benefit plan activity	'	'	45	'	'	'	'	'	'
Benefit plan activity	'	'	'	'	'	'	-3	'	'
Benefit plan activity	42	'	'	'	'	'	'	'	'
Distributions to noncontrolling interests and other	'	'	'	'	'	'	'	'	'
Distributions to noncontrolling interests and other	'	'	'	'	'	'	'	'	-4
Distributions to noncontrolling interests and other	-4	'	'	'	'	'	'	'	'
Shares	'	'	'	'	'	'	'	'	'
Shares issued - stock-based compensation	1,499,000	'	'	'	'	'	'	'	'
Repurchase of common stock, shares	'	'	'	'	8,410,000	17,423,000	'	'	'
Ending Balance at Mar. 31, 2014	$21,829	$6	$18,932	($4,592)	'	'	$6,962	$77	$444
Ending Balance, Treasury shares at Mar. 31, 2014	69,939,104	'	'	'	'	'	'	'	'
Ending Balance, Common shares at Mar. 31, 2014	635,784,906	'	'	'	'	'	'	'	'

Interim_Financial_Information

Interim Financial Information	3 Months Ended
	Mar. 31, 2014
Additional Basis Of Presentation Disclosure [Abstract]	'
Interim Financial Information	'
	Interim Financial Information
	The interim financial information presented in the financial statements included in this report is unaudited 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 2013 Annual Report on Form 10-K. The results of operations for the three months ended March 31, 2014, are not necessarily indicative of the results to be expected for the full year.
	Certain prior period financial information has been recast to reflect the change in the composition of our operating segments. See Note 19—Segment Disclosures and Related Information for additional information.

Variable_Interest_Entities_VIE

Variable Interest Entities (VIEs)	3 Months Ended
	Mar. 31, 2014
Variable Interest Entities [Abstract]	'
Variable Interest Entities (VIEs)	'
	Variable Interest Entities (VIEs)
	In 2013, we formed Phillips 66 Partners LP, a master limited partnership, to own, operate, develop and acquire primarily fee-based crude oil, refined petroleum product and natural gas liquids pipelines and terminals, as well as other transportation and midstream assets. We consolidate Phillips 66 Partners as we determined that Phillips 66 Partners is a VIE and we are the primary beneficiary. As general partner, we have the ability to control its financial interests, as well as the ability to direct the activities of Phillip 66 Partners that most significantly impact its economic performance. See Note 21—Phillips 66 Partners LP for additional information.
	We hold significant variable interests in VIEs that have not been consolidated because we are not considered the primary beneficiary. Information on these VIEs follows:
	Merey Sweeny, L.P. (MSLP) is a limited partnership that owns a delayed coker and related facilities at the Sweeny Refinery. As discussed more fully in Note 5—Investments, Loans and Long-Term Receivables, in August 2009, a call right was exercised to acquire the 50 percent ownership interest in MSLP of the co-venturer, Petróleos de Venezuela S.A. (PDVSA). That exercise was challenged, and the dispute has been arbitrated. In April 2014, the arbitral tribunal upheld the exercise of the call right and the acquisition of the 50 percent ownership interest. PDVSA has a right to appeal the ruling in U.S. district court. Because an appeal may be filed by PDVSA, we continue to use the equity method of accounting for MSLP, and the VIE analysis below is based on the ownership and governance structure in place prior to the exercise of the call right. MSLP is a VIE because, in securing lender consents in connection with our separation from ConocoPhillips in 2012 (the Separation), we provided a 100 percent debt guarantee to the lender of the 8.85% senior notes issued by MSLP. PDVSA did not participate in the debt guarantee. In our VIE assessment, this disproportionate debt guarantee, plus other liquidity support provided jointly by us and PDVSA independently of equity ownership, results in MSLP not being exposed to all potential losses. We have determined we are not the primary beneficiary while our call exercise is in dispute because under the partnership agreement the co-venturers jointly direct the activities of MSLP that most significantly impact economic performance. At March 31, 2014, our maximum exposure to loss represented the outstanding debt principal balance of $214 million and our investment of $116 million.
	We have a 50 percent ownership interest with a 50 percent governance interest in Excel Paralubes (Excel). Excel is a VIE because, in securing lender consents in connection with the Separation, ConocoPhillips provided a 50 percent debt guarantee to the lender of the 7.43% senior secured bonds issued by Excel. We provided a full indemnity to ConocoPhillips for this debt guarantee. Our co-venturer did not participate in the debt guarantee. In our assessment of the VIE, this debt guarantee, plus other liquidity support up to $60 million provided jointly by us and our co-venturer independently of equity ownership, results in Excel not being exposed to all potential losses. We have determined we are not the primary beneficiary because we and our co-venturer jointly direct the activities of Excel that most significantly impact economic performance. We continue to use equity method accounting for this investment. At March 31, 2014, our maximum exposure to loss represented 50 percent of the outstanding debt principal balance of $116 million, or
	$58 million, plus half of the $60 million liquidity support, or $30 million. The book value of our investment in Excel at March 31, 2014, was $128 million.
	In 2013, we entered into a multi-year consignment fuels agreement with a marketer who we currently support with debt guarantees. Pursuant to the consignment fuels agreement, we own the fuels inventory, control the fuel marketing at each site and pay a fixed monthly fee to the marketer. We determined the consignment fuels agreement and the debt guarantees together create a variable interest in the marketer, with the marketer not being exposed to all potential losses. We determined we are not the primary beneficiary because we do not have the power to direct the activities that most significantly impact the economic performance of the marketer or its service stations. We have no ownership interest in the marketer. At March 31, 2014, our maximum exposure to loss represented the outstanding debt balance of $190 million and the fixed annual contractual payments under the consignment fuels agreement of approximately $80 million.

Inventories

Inventories	3 Months Ended
	Mar. 31, 2014
Inventory Disclosure [Abstract]	'
Inventories	'
	Inventories
	Inventories consisted of the following:
		Millions of Dollars
		March 31		December 31
		2014		2013
	Crude oil and petroleum products	$	5,642	3,093
	Materials and supplies	266		261
		$	5,908	3,354
	Inventories valued on the last-in, first-out (LIFO) basis totaled $5,522 million and $2,945 million at March 31, 2014, and December 31, 2013, respectively. The estimated excess of current replacement cost over LIFO cost of inventories amounted to approximately $8,200 million and $7,600 million at March 31, 2014, and December 31, 2013, respectively.

Assets_Held_for_Sale_or_Sold

Assets Held for Sale or Sold	3 Months Ended
	Mar. 31, 2014
Disposal Group, Including Discontinued Operation, Additional Disclosures [Abstract]	'
Assets Held for Sale or Sold	'
	Assets Held for Sale or Sold
	In December 2013, we entered into an agreement to exchange the stock of Phillips Specialty Products Inc. (PSPI), a flow improver business, which was included in our Marketing and Specialties (M&S) segment, for shares of Phillips 66 common stock owned by the other party. Accordingly, as of December 31, 2013, the net assets of PSPI were classified as held for sale and the results of operations of PSPI were reported as discontinued operations.
	At December 31, 2013, PSPI had a net carrying value of $193 million, which primarily included $58 million of net properties, plants and equipment (PP&E) and $117 million of allocated goodwill. The carrying amounts of PSPI’s assets and liabilities at December 31, 2013, were reported in the “Prepaid expenses and other current assets” and “Other accruals” lines of our consolidated balance sheet, respectively.
	On February 25, 2014, we completed the PSPI share exchange, resulting in the receipt of approximately 17.4 million shares of Phillips 66 common stock, which are held as treasury shares, and the recognition of a before-tax gain of $696 million. At the time of the disposition, PSPI had a net carrying value of $685 million, which primarily included $481 million of cash and cash equivalents, $60 million of net PP&E and $117 million of allocated goodwill. Cash and cash equivalents of $450 million included in PSPI’s net carrying value is reflected as a financing cash outflow in the “Share exchange—PSPI transaction” line of our consolidated statement of cash flows. Revenues, income before-tax and net income from discontinued operations, excluding the recognized before-tax gain of $696 million, were not material for the three-month periods ended March 31, 2014 and 2013.

Investments_Loans_and_LongTerm

Investments, Loans and Long-Term Receivables	3 Months Ended
	Mar. 31, 2014
Equity Method Investments and Joint Ventures [Abstract]	'
Investments, Loans and Long-Term Receivables	'
	Investments, Loans and Long-Term Receivables
	Equity Investments
	Summarized 100 percent financial information for WRB Refining LP (WRB) and Chevron Phillips Chemical Company LLC (CPChem) were as follows:
		Millions of Dollars
		Three Months Ended
		31-Mar
		2014		2013
	Revenues	$	7,998	8,140
	Income before income taxes	1,124		1,768
	Net income	1,101		1,750
	WRB
	WRB is a 50-percent-owned business venture with Cenovus Energy Inc. (Cenovus). Cenovus was obligated to contribute $7.5 billion, plus accrued interest, to WRB over a 10-year period that began in 2007. In the first quarter of 2014, Cenovus prepaid its remaining balance under this obligation. As a result, WRB declared a special dividend, which was distributed to the co-venturers in March 2014. Of the $1,232 million that we received, $760 million was considered a return on our investment in WRB (an operating cash inflow), and $472 million was considered a return of our investment in WRB (an investing cash inflow). At March 31, 2014, the book value of our investment in WRB was $2,017 million and our basis difference was $3,511 million.
	Other
	MSLP owns a delayed coker and related facilities at the Sweeny Refinery. MSLP processes long residue, which is produced from heavy sour crude oil, for a processing fee. Fuel-grade petroleum coke is produced as a by-product and becomes the property of MSLP. Prior to August 28, 2009, MSLP was owned 50/50 by ConocoPhillips and PDVSA. Under the agreements that govern the relationships between the partners, certain defaults by PDVSA with respect to supply of crude oil to the Sweeny Refinery triggered the right to acquire PDVSA’s 50 percent ownership interest in MSLP, which was exercised on August 28, 2009. PDVSA initiated arbitration with the International Chamber of Commerce challenging the exercise of the call right and claiming it was invalid. The arbitral tribunal held hearings on the merits of the dispute in December 2012, and post-hearing briefs were exchanged in March 2013. The arbitral tribunal issued its ruling in April 2014, which upheld the exercise of the call right and the acquisition of the 50 percent ownership interest. PDVSA has a right to appeal the ruling in U.S. district court.  Following the Separation, Phillips 66 generally indemnifies ConocoPhillips for liabilities, if any, arising out of the exercise of the call right or otherwise with respect to the joint venture or the refinery. We continue to use the equity method of accounting for our investment in MSLP.

Properties_Plants_and_Equipmen

Properties, Plants and Equipment	3 Months Ended
	Mar. 31, 2014
Property, Plant and Equipment [Abstract]	'
Properties, Plants and Equipment	'
	Properties, Plants and Equipment
	Our investment in PP&E, with the associated accumulated depreciation and amortization (Accum. D&A), was:
		Millions of Dollars
		31-Mar-14				31-Dec-13
		Gross		Accum.	Net	Gross	Accum.	Net
		PP&E		D&A	PP&E	PP&E	D&A	PP&E
	Midstream	$	3,092	1,122	1,970	2,865	1,104	1,761
	Chemicals	—		—	—	—	—	—
	Refining	19,372		6,874	12,498	19,191	6,718	12,473
	Marketing and Specialties	1,525		753	772	1,395	749	646
	Corporate and Other	989		478	511	975	457	518
	Discontinued Operations*	—		—	—	—	—	—
		$	24,978	9,227	15,751	24,426	9,028	15,398
	* At December 31, 2013, net PP&E of $58 million associated with discontinued operations was classified as current assets.

Goodwill

Goodwill	3 Months Ended
	Mar. 31, 2014
Goodwill [Abstract]	'
Goodwill Disclosure [Text Block]	'
	Goodwill
	Effective January 1, 2014, we reallocated $52 million of goodwill from the Refining segment to the M&S segment based upon the realignment of certain assets between the reporting units. Goodwill was reassigned to the reporting units using a relative fair value approach. Goodwill impairment testing was completed and no impairment recognition was required. See Note 19—Segment Disclosures and Related Information.
	In March 2014, we paid approximately $70 million, net of acquired cash, to acquire our co-venturer's interest in an entity that operates a power and steam generation plant. We provisionally recorded $141 million of net PP&E, $40 million of intangible assets, $39 million of goodwill and $68 million of debt. The goodwill is the result of synergies this acquisition created with one of our refineries. The completion of our acquisition accounting is subject to the finalization of valuations of the assets acquired and liabilities assumed.
	See Note 4—Assets Held for Sale or Sold for additional information on goodwill allocated to assets held for sale or sold.
	The carrying amount of goodwill was as follows:
		Millions of Dollars
		March 31		December 31
		2014		2013
	Midstream	$	518	518
	Refining	1,912		1,867
	Marketing and Specialties	711		711
		$	3,141	3,096

Impairments

Impairments	3 Months Ended
	Mar. 31, 2014
Impairment Of Long Lived Assets Abstract [Abstract]	'
Impairments	'
	Impairments
	The three-month periods ended March 31, 2014 and 2013, included the following before-tax impairment charges:
		Millions of Dollars
		Three Months Ended
		31-Mar
		2014		2013
	Refining	$	1	—
	Marketing and Specialties	—		15
	Corporate and Other	—		9
		$	1	24
	During the first quarter of 2013, we recorded a $15 million held-for-use impairment in our M&S segment, primarily related to PP&E associated with our planned exit from the composite graphite business.

Earnings_Per_Share

Earnings Per Share	3 Months Ended
	Mar. 31, 2014
Earnings Per Share [Abstract]	'
Earnings Per Share	'
	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
		31-Mar
		2014				2013
		Basic			Diluted	Basic		Diluted
	Amounts attributed to Phillips 66 Common Stockholders (millions):
	Income from continuing operations attributable to Phillips 66	$	866		866	1,392		1,392
	Income allocated to participating securities	(1		)	—	(1	)	—
	Income from continuing operations available to common stockholders	865			866	1,391		1,392
	Discontinued operations	706			706	15		15
	Net Income available to common stockholders	$	1,571		1,572	1,406		1,407
	Weighted-average common shares outstanding (thousands):	580,027			584,053	621,309		625,030
	Effect of stock-based compensation	4,026			5,522	3,721		6,258
	Weighted-average common shares outstanding—EPS	584,053			589,575	625,030		631,288
	Earnings Per Share of Common Stock (dollars):
	Income from continuing operations attributable to Phillips 66	$	1.48		1.47	2.23		2.21
	Discontinued operations	1.21			1.2	0.02		0.02
	Earnings Per Share	$	2.69		2.67	2.25		2.23

Debt

Debt	3 Months Ended
	Mar. 31, 2014
Debt Disclosure [Abstract]	'
Debt	'
	Debt
	At both March 31, 2014, and December 31, 2013, we had no direct outstanding borrowings under our $4.5 billion revolving credit agreement or our $696 million trade receivables securitization facility. However, as of both March 31, 2014, and December 31, 2013, $51 million in letters of credit had been issued that were supported by our revolving credit agreement. As of both March 31, 2014, and December 31, 2013, $26 million in letters of credit had been issued that were collateralized by trade receivables held by a subsidiary under our trade receivables securitization facility. At March 31, 2014, no amount had been drawn on the $250 million revolving credit agreement entered into by Phillips 66 Partners in the second quarter of 2013. Accordingly, as of March 31, 2014, an aggregate $5.4 billion of total capacity was available under these facilities.
	At March 31, 2014, we classified $800 million of long-term debt due within a year as long-term debt, based on our intent to refinance the obligation on a long-term basis and our ability to do so under our revolving credit facility.

Guarantees

Guarantees	3 Months Ended
	Mar. 31, 2014
Guarantees [Abstract]	'
Guarantees	'
	Guarantees
	At March 31, 2014, we were liable for certain contingent obligations under various contractual arrangements as described below. We recognize a liability, at inception, 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 guarantee and expect future performance to be either immaterial or have only a remote chance of occurrence.
	Guarantees of Joint Venture Debt
	In April 2012, in connection with the Separation, we issued a guarantee for 100 percent of the 8.85% senior notes issued by MSLP in July 1999. At March 31, 2014, the maximum potential amount of future payments to third parties under the guarantee is estimated to be $214 million, which could become payable if MSLP fails to meet its obligations under the senior notes agreement. The senior notes mature in 2019.
	Other Guarantees
	We have residual value guarantees associated with leases with maximum future potential payments totaling $228 million. We have other guarantees with maximum future potential payment amounts totaling $314 million, which consist primarily of guarantees to fund the short-term cash liquidity deficits of certain joint ventures, guarantees of third parties related to prior asset dispositions, and guarantees of the lease payment obligations of a joint venture. These guarantees generally extend up to 10 years or life of the venture.
	Indemnifications
	Over the years, we have entered into various agreements to sell ownership interests in certain corporations, joint ventures and assets that gave rise to qualifying indemnifications. Agreements associated with these sales include indemnifications for taxes, litigation, environmental liabilities, permits and licenses, supply arrangements, and employee claims; and real estate indemnity against tenant defaults. The terms of these indemnifications vary greatly. The majority of these indemnifications are related to environmental issues, the term is generally indefinite, and the maximum amount of future payments is generally unlimited. The carrying amount recorded for indemnifications at March 31, 2014, was $241 million. 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 the liability is 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. Included in the recorded carrying amount were $107 million of environmental accruals for known contamination that were included in asset retirement obligations and accrued environmental costs at March 31, 2014. For additional information about environmental liabilities, see Note 12—Contingencies and Commitments.
	Indemnification and Release Agreement
	In 2012, we entered into the Indemnification and Release Agreement with ConocoPhillips. 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.

Contingencies_and_Commitments

Contingencies and Commitments	3 Months Ended
	Mar. 31, 2014
Commitments and Contingencies Disclosure [Abstract]	'
Contingencies and Commitments	'
	Contingencies and Commitments
	A number of lawsuits involving a variety of claims that arose in the ordinary course of business have been filed against us or are subject to indemnifications provided by us. We also may be required to remove or mitigate the effects on the environment of the placement, storage, disposal or release of certain chemical, mineral and petroleum substances at various active and inactive sites. We regularly assess the need for accounting 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 record 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 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 all information available at the time. We measure estimates and base liabilities on currently available facts, existing technology, and presently enacted laws and regulations, taking into account stakeholder and business considerations. When measuring 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 of those potentially responsible 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 the 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 and 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 purchase business combination, which we record on a discounted basis) for planned investigation and remediation activities for sites where it is probable future costs will be incurred and these costs can be reasonably estimated. At March 31, 2014, our consolidated balance sheet included a total environmental accrual of $488 million, compared with $492 million at December 31, 2013. 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. This process also enables us to track those cases that have been scheduled for trial and/or mediation. Based on professional judgment and experience in using these litigation management tools and available information about current developments in all our cases, our legal organization regularly assesses the adequacy of current accruals and determines if adjustment of existing accruals, or establishment of new accruals, is required.
	Other Contingencies
	We have contingent liabilities resulting from throughput agreements with pipeline and processing companies not associated with financing arrangements. Under these agreements, we may be required to provide any such company with additional funds through advances and penalties for fees related to throughput capacity not utilized.
	At March 31, 2014, we had performance obligations secured by letters of credit of $1,161 million (of which, $26 million were issued under the trade receivables securitization facility, $51 million were issued under the provisions of our revolving credit facility, and the remainder were issued as direct bank letters of credit) related to various purchase and other commitments incident to the ordinary conduct of business.

Derivatives_and_Financial_Inst

Derivatives and Financial Instruments	3 Months Ended
	Mar. 31, 2014
Derivative Instruments and Hedging Activities Disclosure [Abstract]	'
Derivatives and Financial Instruments	'
	Derivatives and Financial Instruments
	Derivative Instruments
	We use financial and commodity-based derivative contracts to manage exposures to fluctuations in foreign currency exchange rates and commodity prices or to capture market opportunities. Since we are not currently using cash-flow hedge accounting, all gains and losses, realized or unrealized, from commodity derivative contracts have been recognized in the consolidated statement of income. Gains and losses from derivative contracts held for trading not directly related to our physical business, whether realized or unrealized, have been reported net in “Other income” on our consolidated statement of income. Cash flows from all our derivative activity for the periods presented appear in the operating section of the consolidated statement of cash flows.
	Purchase and sales contracts with fixed minimum notional volumes for commodities that are readily convertible to cash (e.g., crude oil and gasoline) are recorded on the balance sheet as derivatives unless the contracts are eligible for, and we elect, the normal purchases and normal sales exception (i.e., contracts to purchase or sell quantities we expect to use or sell over a reasonable period in the normal course of business). We generally apply this normal purchases and normal sales exception to eligible crude oil, refined product, natural gas and power commodity purchase and sales contracts; however, we may elect not to apply this exception (e.g., when another derivative instrument will be used to mitigate the risk of the purchase or sales contract but hedge accounting will not be applied, in which case both the purchase or sales contract and the derivative contract mitigating the resulting risk will be recorded on the balance sheet at fair value).
	Our derivative instruments are held at fair value on our consolidated balance sheet. For further information on the fair value of derivatives, see Note 14—Fair Value Measurements.
	Commodity Derivative Contracts—We operate in the worldwide crude oil, refined products, natural gas liquids (NGL), natural gas and electric power markets and are exposed to fluctuations in the prices for these commodities. These fluctuations can affect our revenues, as well as the cost of operating, investing and financing activities. 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, immaterial amount of trading not directly related to our physical business. 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. Derivatives may be used to optimize these activities, which may move our risk profile away from market average prices.
	The following table indicates the balance sheet line items that include the fair values of commodity derivative assets and liabilities presented net (i.e., commodity derivative assets and liabilities with the same counterparty are netted where the right of setoff exists); however, the balances in the following table are presented gross. For information on the impact of counterparty netting and collateral netting, see Note 14—Fair Value Measurements.
		Millions of Dollars
		March 31			December 31
		2014			2013
	Assets
	Accounts and notes receivable	$	—		2
	Prepaid expenses and other current assets	486			592
	Other assets	1			2
	Liabilities
	Other accruals	472			633
	Other liabilities and deferred credits	1			1
	Hedge accounting has not been used for any item in the table.
	The gains (losses) from commodity derivatives incurred, and the line items where they appear on our consolidated statement of income, were:
		Millions of Dollars
		Three Months Ended
		31-Mar
		2014			2013
	Sales and other operating revenues	$	57		(6	)
	Equity in earnings of affiliates	—			2
	Other income	14			3
	Purchased crude oil and products	2			89
	Hedge accounting has not been used for any item in the table.
	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. As of March 31, 2014, and December 31, 2013, the percentage of our derivative contract volume expiring within the next 12 months was over 99 percent for both periods.
		Open Position
		Long/(Short)
		March 31		December 31
		2014		2013
	Commodity
	Crude oil, refined products and NGL (millions of barrels)	(24	)	(9	)
	Credit Risk
	Financial instruments potentially exposed to concentrations of credit risk consist primarily of over-the-counter (OTC) derivative contracts and trade receivables.
	The credit risk from our OTC 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 until settled; however, we are exposed to the credit risk of those exchange brokers for receivables arising from daily margin cash calls, as well as for cash deposited to meet initial margin requirements.
	Our trade receivables result primarily from the sale of products from, or related to, our refinery operations and reflect a broad national and international customer base, which limits our exposure to concentrations of credit risk. The majority of these receivables have payment terms of 30 days or less. We continually monitor this exposure and the creditworthiness of the counterparties and recognize bad debt expense based on historical write-off experience or specific counterparty collectability. Generally, we do not require collateral to limit the exposure to loss; however, we will sometimes use letters of credit, prepayments, and master netting arrangements to mitigate credit risk with counterparties that both buy from and sell to us, as these agreements permit the amounts owed by us or owed to others to be offset against amounts due us.
	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 not material at March 31, 2014, or December 31, 2013.

Fair_Value_Measurements

Fair Value Measurements	3 Months Ended
	Mar. 31, 2014
Fair Value Disclosures [Abstract]	'
Fair Value Measurements	'
	Fair Value Measurements
	Fair Values of Financial Instruments
	We used the following methods and assumptions to estimate the fair value of financial instruments:
	•	Cash and cash equivalents: The carrying amount reported on the consolidated balance sheet approximates fair value.
	•	Accounts and notes receivable: The carrying amount reported on the consolidated balance sheet approximates fair value.
	•	Debt: The carrying amount of our floating-rate debt approximates fair value. The fair value of our fixed-rate debt is estimated based on quoted market prices.
	•	Commodity swaps: Fair value is estimated based on forward market prices and approximates the exit price at period end. When forward market prices are not available, fair value is estimated using the forward prices of a similar commodity with adjustments for differences in quality or location.
	•	Futures: Fair values are based on quoted market prices obtained from the New York Mercantile Exchange, the InterContinental Exchange Futures or other traded exchanges.
	•	Forward-exchange contracts: Fair values are estimated by comparing the contract rate to the forward rate in effect at the end of the respective reporting periods and approximating the exit price at those dates.
	We carry certain assets and liabilities at fair value, which we measure at the reporting date using an exit price (i.e., the price that would be received to sell an asset or paid to transfer a liability), 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 with: 1) adjusted quoted prices from an active market for similar assets; 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 lowest level of input significant to its measurement; however, the fair value of an asset or liability initially reported as Level 3 will be subsequently reported as Level 2 if the unobservable inputs become inconsequential to its measurement or corroborating market data becomes available. Conversely, an asset or liability initially reported as Level 2 will be subsequently reported as Level 3 if corroborating market data becomes unavailable. We made no material transfers in or out of Level 1 during the three-month periods ended March 31, 2014 and 2013.
	Recurring Fair Value Measurements
	Financial assets and liabilities recorded at fair value on a recurring basis consist primarily of investments to support nonqualified deferred compensation plans and derivative instruments. The deferred compensation investments are measured at fair value using unadjusted prices available from national securities exchanges; therefore, these assets are categorized as Level 1 in the fair value hierarchy. We value our exchange-traded commodity derivatives using closing prices provided by the exchange as of the balance sheet date, and these are also classified 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. OTC financial swaps and physical commodity forward purchase and sales contracts are generally valued using quotations 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. In certain less liquid markets or for longer-term contracts, forward prices are not as readily available. In these circumstances, OTC swaps and physical commodity purchase and sales contracts 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. Financial OTC and physical 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.
	The following tables display the fair value hierarchy for our material 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 gross (i.e., without the effect of netting where the legal right of setoff exists) in the hierarchy sections of these tables. These tables also show that our Level 3 activity was not material.
	We have master netting arrangements for all of our exchange-cleared derivative instruments, the majority of our OTC derivative instruments, and certain physical commodity forward contracts (primarily pipeline crude oil deliveries). The following tables show these contracts on a net basis in the column “Effect of Counterparty Netting.” We have no contracts that are subject to master netting arrangements that are reflected gross on the consolidated balance sheet.
	The carrying values and fair values by hierarchy of our material financial instruments, either carried or disclosed at fair value, and derivative assets and liabilities, including any effects of master netting agreements or collateral, were:
		Millions of Dollars
		31-Mar-14
		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	Cash Collateral Received or Paid, Not Offset on Balance Sheet
		Level 1		Level 2	Level 3
	Commodity Derivative Assets
	Exchange-cleared instruments	$	203	248	—	451	(444	)	—		—		7	—
	OTC instruments	—		9	—	9	(4	)	—		—		5	—
	Physical forward contracts*	—		23	4	27	—		—		—		27	—
	Rabbi trust assets	64		—	—	64	N/A		N/A		—		64	N/A
		$	267	280	4	551	(448	)	—		—		103
	Commodity Derivative Liabilities
	Exchange-cleared instruments	$	207	241	—	448	(444	)	(4	)	—		—	—
	OTC instruments	—		11	—	11	(4	)	—		—		7	—
	Physical forward contracts*	—		13	1	14	—		—		—		14	—
	Floating-rate debt	53		—	—	53	N/A		N/A		—		53	N/A
	Fixed-rate debt, excluding capital leases**	—		6,347	—	6,347	N/A		N/A		(383	)	5,964	N/A
		$	260	6,612	1	6,873	(448	)	(4	)	(383	)	6,038
	* Physical forward contracts may have a larger value on the balance sheet than disclosed in the fair value hierarchy when the remaining contract term at the reporting date is greater than 12 months and the short-term portion is an asset while the long-term portion is a liability, or vice versa.
	** We carry fixed-rate debt on the balance sheet at amortized cost.
		Millions of Dollars
		31-Dec-13
		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	Cash Collateral Received or Paid, Not Offset on Balance Sheet
		Level 1		Level 2	Level 3
	Commodity Derivative Assets
	Exchange-cleared instruments	$	227	332	—	559	(538	)	—		—		21	—
	OTC instruments	—		10	—	10	(8	)	—		—		2	—
	Physical forward contracts*	—		25	2	27	—		—		—		27	—
	Rabbi trust assets	64		—	—	64	N/A		N/A		—		64	N/A
		$	291	367	2	660	(546	)	—		—		114
	Commodity Derivative Liabilities
	Exchange-cleared instruments	$	253	326	—	579	(538	)	(41	)	—		—	—
	OTC instruments	—		11	—	11	(8	)	—		—		3	—
	Physical forward contracts*	—		43	1	44	—		—		—		44	—
	Floating-rate debt	50		—	—	50	N/A		N/A		—		50	N/A
	Fixed-rate debt, excluding capital leases**	—		6,168	—	6,168	N/A		N/A		(262	)	5,906	N/A
		$	303	6,548	1	6,852	(546	)	(41	)	(262	)	6,003
	* Physical forward contracts may have a larger value on the balance sheet than disclosed in the fair value hierarchy when the remaining contract term at the reporting date is greater than 12 months and the short-term portion is an asset while the long-term portion is a liability, or vice versa.
	** We carry fixed-rate debt on the balance sheet at amortized cost.
	The values presented in the preceding tables appear on our balance sheet as follows: for commodity derivative assets and liabilities, this is provided in the first table in Note 13—Derivatives and Financial Instruments; rabbi trust assets appear in the “Investments and long-term receivables” line; and floating-rate and fixed-rate debt appear in the “Short-term debt” and “Long-term debt” lines.
	Nonrecurring Fair Value Remeasurements
	During the three-month period ended March 31, 2014, there were no significant nonrecurring fair value remeasurements of assets subsequent to their initial recognition.
	The following table shows the values of assets, by major category, measured at fair value on a nonrecurring basis in periods subsequent to their initial recognition during the three-month period ended March 31, 2013:
		Millions of Dollars
				Fair Value
Measurements Using
	Fair Value*		Level 1	Level 2	Level 3		Before-
			Inputs	Inputs	Inputs		Tax Loss
31-Mar-13
Net properties, plants and equipment (held for use)	$	22	22	—	—		27
* Represents the fair value at the time of the impairment.
During the first quarter of 2013, net PP&E held for use related to the composite graphite business in our M&S segment, with a carrying amount of $18 million, was written down to its fair value, resulting in a before-tax loss of $18 million. The fair value was based on an internal assessment of expected discounted future cash flows. During this same period, corporate net PP&E held for use with a carrying amount of $31 million was written down to its fair value of $22 million, resulting in a before-tax loss of $9 million. The fair value was primarily determined by a third-party valuation.

Employee_Benefit_Plans

Employee Benefit Plans	3 Months Ended
	Mar. 31, 2014
Compensation and Retirement Disclosure [Abstract]	'
Employee Benefit Plans	'
	Employee Benefit Plans
	Pension and Postretirement Plans
	The components of net periodic benefit cost for the three months ended March 31, 2014 and 2013, were as follows:
		Millions of Dollars
		Pension Benefits									Other Benefits
		2014					2013				2014		2013
		U.S.			Int’l.		U.S.		Int’l.
	Components of Net Periodic Benefit Cost
	Three Months Ended March 31
	Service cost	$	30		10		31		9		2		2
	Interest cost	27			9		23		8		2		2
	Expected return on plan assets	(36		)	(9	)	(30	)	(7	)	—		—
	Amortization of prior service cost (credit)	1			(1	)	—		—		—		—
	Recognized net actuarial loss (gain)	10			3		21		5		(1	)	—
	Total net periodic benefit cost	$	32		12		45		15		3		4
	During the first three months of 2014, we contributed $162 million to our U.S. plans and $14 million to our international plans. We currently expect to make additional contributions of approximately $60 million in 2014, primarily to our international plans.

Accumulated_Other_Comprehensiv

Accumulated Other Comprehensive Income (Loss)	3 Months Ended
	Mar. 31, 2014
Equity [Abstract]	'
Accumulated Other Comprehensive Income (Loss)	'
	Accumulated Other Comprehensive Income (Loss)
	The following table depicts changes in accumulated other comprehensive income (loss) by component, as well as detail on reclassifications out of accumulated other comprehensive income (loss):
		Millions of Dollars
		Defined Benefit Plans			Foreign Currency Translation		Hedging		Accumulated Other Comprehensive Income (Loss)
	31-Dec-12	$	(778	)	466		(2	)	(314	)
	Other comprehensive loss before reclassifications	(8		)	(318	)	—		(326	)
	Amounts reclassified from accumulated other comprehensive income (loss)*
	Amortization of defined benefit plan items**
	Actuarial losses	18			—		—		18
	Net current period other comprehensive income (loss)	10			(318	)	—		(308	)
	31-Mar-13	$	(768	)	148		(2	)	(622	)
	31-Dec-13	$	(404	)	443		(2	)	37
	Other comprehensive income before reclassifications	2			30		—		32
	Amounts reclassified from accumulated other comprehensive income (loss)*
	Amortization of defined benefit plan items**
	Actuarial losses	8			—		—		8
	Net current period other comprehensive income	10			30		—		40
	31-Mar-14	$	(394	)	473		(2	)	77
	* There were no significant reclassifications related to foreign currency translation or hedging.
	** These accumulated other comprehensive income (loss) components are included in the computation of net periodic benefit cost (see Note 15—Employee Benefit Plans, for additional information).

Cash_Flow_Information

Cash Flow Information	3 Months Ended
	Mar. 31, 2014
Supplemental Cash Flow Information [Abstract]	'
Cash Flow Information	'
	Cash Flow Information
		Millions of Dollars
		Three Months Ended
		31-Mar
		2014		2013
	Cash Payments
	Interest	$	12	15
	Income taxes	26		83
	Noncash Investing and Financing Activities
	As discussed more fully in Note 4—Assets Held for Sale or Sold, on February 25, 2014, we completed the exchange of our flow improvers business for shares of Phillips 66 common stock owned by the other party to the transaction. The noncash portion of the net assets surrendered by us in the exchange was $204 million, and we received approximately 17.4 million shares of our common stock, with a fair value at the time of the exchange of $1.35 billion.

Related_Party_Transactions

Related Party Transactions	3 Months Ended
	Mar. 31, 2014
Related Party Transactions [Abstract]	'
Related Party Transactions	'
	Related Party Transactions
	Significant transactions with related parties were:
		Millions of Dollars
		Three Months Ended
		31-Mar
		2014		2013
	Operating revenues and other income (a)	$	2,067	1,749
	Purchases (b)	3,991		4,287
	Operating expenses and selling, general and administrative expenses (c)	35		24
	Interest expense (d)	2		2
	(a)	We sold crude oil to the Malaysian Refining Company Sdn. Bdh. (MRC). NGL and other petrochemical feedstocks, along with solvents, were sold to CPChem, and gas oil and hydrogen feedstocks were sold to Excel. Certain feedstocks and intermediate products were sold to WRB. We also acted as agent for WRB in supplying other crude oil and feedstocks, wherein the transactional amounts did not impact operating revenues. In addition, we charged several of our affiliates, including CPChem and MSLP, for the use of common facilities, such as steam generators, waste and water treaters, and warehouse facilities.
	(b)	We purchased refined products from WRB. We also acted as agent for WRB in distributing asphalt and solvents, wherein the transactional amounts did not impact purchases. We purchased natural gas and NGL from DCP Midstream, LLC (DCP Midstream) and CPChem for use in our refinery processes and other feedstocks from various affiliates. We purchased refined products from MRC. We also paid fees to various pipeline equity companies for transporting finished refined products. In addition, we paid a price upgrade to MSLP for heavy crude processing. We purchased base oils and fuel products from Excel for use in our refining and specialty businesses.
	(c)	We paid utility and processing fees to various affiliates.
	(d)	We incurred interest expense on a note payable to MSLP.

Segment_Disclosures_and_Relate

Segment Disclosures and Related Information	3 Months Ended
	Mar. 31, 2014
Segment Reporting [Abstract]	'
Segment Disclosures and Related Information	'
	Segment Disclosures and Related Information
	Our operating segments are:
	1)	Midstream—Gathers, processes, transports and markets natural gas; and transports, fractionates and markets NGL in the United States. In addition, this segment transports crude oil and other feedstocks to our refineries and other locations, and delivers refined and specialty products to market. The Midstream segment includes, among other businesses, our 50 percent equity investment in DCP Midstream and our investment in Phillips 66 Partners LP.
	2)	Chemicals—Manufactures and markets petrochemicals and plastics on a worldwide basis. The Chemicals segment consists of our 50 percent equity investment in CPChem.
	3)	Refining—Buys, sells and refines crude oil and other feedstocks at 15 refineries, mainly in the United States, Europe and Asia.
	4)	Marketing and Specialties—Purchases for resale and markets refined products, 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.
	Corporate and Other includes general corporate overhead, interest expense, our investments in new technologies and various other corporate activities. Corporate assets include all cash and cash equivalents.
	We evaluate performance and allocate resources based on net income attributable to Phillips 66. Intersegment sales are at prices that approximate market.
	Effective January 1, 2014, we changed the organizational structure of the internal financial information reviewed by our chief executive officer, and determined this resulted in a change in the composition of our operating segments. The primary effects of this reporting reorganization were:
	•	We moved two of our equity investments, Excel and Jupiter Sulphur, LLC, as well as the commission revenues related to needle and anode coke, polypropylene and solvents, from the Refining segment to the M&S segment.
	•	We moved several refining logistics projects from the Refining segment to the Midstream segment.
	The new segment alignment is presented for the three-month period ended March 31, 2014, with the prior periods recast for comparability.
	Analysis of Results by Operating Segment
		Millions of Dollars
		Three Months Ended
		31-Mar
		2014			2013
	Sales and Other Operating Revenues
	Midstream
	Total sales	$	2,155		1,628
	Intersegment eliminations	(292		)	(232	)
	Total Midstream	1,863			1,396
	Chemicals	2			2
	Refining
	Total sales	29,215			29,762
	Intersegment eliminations	(17,558		)	(17,857	)
	Total Refining	11,657			11,905
	Marketing and Specialties
	Total sales	27,046			28,180
	Intersegment eliminations	(292		)	(278	)
	Total Marketing and Specialties	26,754			27,902
	Corporate and Other	7			6
	Consolidated sales and other operating revenues	$	40,283		41,211
	Net Income (Loss) Attributable to Phillips 66
	Midstream	$	188		111
	Chemicals	316			282
	Refining	306			904
	Marketing and Specialties	137			190
	Corporate and Other	(81		)	(95	)
	Discontinued operations	706			15
	Consolidated net income attributable to Phillips 66	$	1,572		1,407
		Millions of Dollars
		March 31			December 31
		2014			2013
	Total Assets
	Midstream	$	5,379		5,485
	Chemicals	4,689			4,377
	Refining	27,262			26,046
	Marketing and Specialties	7,335			7,331
	Corporate and Other	6,182			6,348
	Discontinued operations	—			211
	Consolidated total assets	$	50,847		49,798

Income_Taxes

Income Taxes	3 Months Ended
	Mar. 31, 2014
Income Tax Disclosure [Abstract]	'
Income Taxes	'
	Income Taxes
	Our effective tax rate for the first three months of 2014 was 33 percent, compared with 32 percent for the corresponding period of 2013. The effective tax rate varies from the federal statutory tax rate of 35 percent primarily as a result of state tax expense, offset by the manufacturing deduction and foreign operations.

New_Accounting_Standards

New Accounting Standards	3 Months Ended
	Mar. 31, 2014
New Accounting Standards [Abstract]	'
New Accounting Standards	'
	New Accounting Standards
	In April 2014, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) No. 2014-08, “Presentation of Financial Statements (Topic 205) and Property, Plant, and Equipment (Topic 360): Reporting Discontinued Operations and Disclosures of Disposals of Components of an Entity.” This ASU amends the definition of discontinued operations so that only disposals of components of an entity representing major strategic shifts that have a major effect on an entity’s operations and financial results will qualify for discontinued operations reporting. The ASU also requires additional disclosures about discontinued operations and individually material disposals that do not meet the definition of a discontinued operation. ASU 2014-08 is effective January 1, 2015, and earlier application is permitted, but only for disposals not previously reported in the financial statements. We are currently evaluating the provisions of ASU 2014-08 and assessing the impact, if any, it may have on our financial position and results of operations. Our initial assessment is that this ASU will result in fewer dispositions qualifying for discontinued operations reporting.

Condensed_Consolidating_Financ

Condensed Consolidating Financial Information	3 Months Ended
	Mar. 31, 2014
Condensed Financial Information of Parent Company Only Disclosure [Abstract]	'
Condensed Consolidating Financial Information	'
	Our $5.8 billion of Senior Notes were issued by Phillips 66, and are guaranteed by Phillips 66 Company, a 100-percent-owned subsidiary. Phillips 66 Company has fully and unconditionally guaranteed the payment obligations of Phillips 66 with respect to these debt securities. 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.
	Effective with fiscal year 2013, we revised the cash flow presentation of inter-column transactions associated with the company’s centralized cash management program and intercompany loans, from operating cash flows to investing cash flows, in a new line item labeled “Intercompany lending activities.” All periods have been revised to conform to this presentation.
		Millions of Dollars
		Three Months Ended March 31, 2014
	Statement of Income	Phillips 66			Phillips 66 Company		All Other Subsidiaries		Consolidating Adjustments		Total Consolidated
	Revenues and Other Income
	Sales and other operating revenues	$	—		27,239		13,044		—		40,283
	Equity in earnings of affiliates	922			846		178		(1,168	)	778
	Net gain on dispositions	—			—		7		—		7
	Other income	—			22		9		—		31
	Intercompany revenues	—			278		4,701		(4,979	)	—
	Total Revenues and Other Income	922			28,385		17,939		(6,147	)	41,099
	Costs and Expenses
	Purchased crude oil and products	—			24,384		14,938		(4,941	)	34,381
	Operating expenses	2			903		191		(6	)	1,090
	Selling, general and administrative expenses	3			286		138		(25	)	402
	Depreciation and amortization	—			180		54		—		234
	Impairments	—			1		—		—		1
	Taxes other than income taxes	—			1,301		2,337		—		3,638
	Accretion on discounted liabilities	—			5		1		—		6
	Interest and debt expense	66			4		5		(7	)	68
	Foreign currency transaction gains	—			—		(19	)	—		(19	)
	Total Costs and Expenses	71			27,064		17,645		(4,979	)	39,801
	Income from continuing operations before income taxes	851			1,321		294		(1,168	)	1,298
	Provision (benefit) for income taxes	(25		)	399		52		—		426
	Income from Continuing Operations	876			922		242		(1,168	)	872
	Income from discontinued operations*	696			—		10		—		706
	Net income	1,572			922		252		(1,168	)	1,578
	Less: net income attributable to noncontrolling interests	—			—		6		—		6
	Net Income Attributable to Phillips 66	$	1,572		922		246		(1,168	)	1,572
	Comprehensive Income	$	1,612		962		284		(1,240	)	1,618
	* Net of provision for income taxes on discontinued operations	$	—		—		5		—		5
		Millions of Dollars
		Three Months Ended March 31, 2013
	Statement of Income	Phillips 66			Phillips 66 Company		All Other Subsidiaries		Consolidating Adjustments		Total Consolidated
	Revenues and Other Income
	Sales and other operating revenues	$	—		27,637		13,574		—		41,211
	Equity in earnings of affiliates	1,452			1,139		158		(1,710	)	1,039
	Net gain on dispositions	—			1		—		—		1
	Other income	—			15		8		—		23
	Intercompany revenues	—			490		4,833		(5,323	)	—
	Total Revenues and Other Income	1,452			29,282		18,573		(7,033	)	42,274
	Costs and Expenses
	Purchased crude oil and products	—			24,752		15,780		(5,289	)	35,243
	Operating expenses	—			799		186		(7	)	978
	Selling, general and administrative expenses	2			206		142		(23	)	327
	Depreciation and amortization	—			183		59		—		242
	Impairments	—			(3	)	27		—		24
	Taxes other than income taxes	—			1,209		2,115		—		3,324
	Accretion on discounted liabilities	—			5		1		—		6
	Interest and debt expense	67			3		4		(4	)	70
	Foreign currency transaction losses	—			1		1		—		2
	Total Costs and Expenses	69			27,155		18,315		(5,323	)	40,216
	Income from continuing operations before income taxes	1,383			2,127		258		(1,710	)	2,058
	Provision (benefit) for income taxes	(24		)	675		12		—		663
	Income from Continuing Operations	1,407			1,452		246		(1,710	)	1,395
	Income from discontinued operations*	—			—		15		—		15
	Net income	1,407			1,452		261		(1,710	)	1,410
	Less: net income attributable to noncontrolling interests	—			—		3		—		3
Net Income Attributable to Phillips 66	$	1,407		1,452		258		(1,710	)	1,407
Comprehensive Income	$	1,100		1,145		(54	)	(1,089	)	1,102
* Net of provision for income taxes on discontinued operations:	$	—		—		8		—		8
	Millions of Dollars
	At March 31, 2014
Balance Sheet	Phillips 66			Phillips 66 Company		All Other Subsidiaries		Consolidating Adjustments		Total Consolidated
Assets
Cash and cash equivalents	$	—		2,096		3,230		—		5,326
Accounts and notes receivable	30			2,699		7,303		(912	)	9,120
Inventories	—			3,414		2,494		—		5,908
Prepaid expenses and other current assets	9			389		307		—		705
Total Current Assets	39			8,598		13,334		(912	)	21,059
Investments and long-term receivables	33,514			26,043		7,997		(57,553	)	10,001
Net properties, plants and equipment	—			11,976		3,775		—		15,751
Goodwill	—			3,099		42		—		3,141
Intangibles	—			693		44		—		737
Other assets	38			112		12		(4	)	158
Total Assets	$	33,591		50,521		25,204		(58,469	)	50,847
Liabilities and Equity
Accounts payable	$	—		7,630		5,905		(912	)	12,623
Short-term debt	—			18		22		—		40
Accrued income and other taxes	—			992		599		—		1,591
Employee benefit obligations	—			207		25		—		232
Other accruals	99			184		395		—		678
Total Current Liabilities	99			9,031		6,946		(912	)	15,164
Long-term debt	5,796			148		233		—		6,177
Asset retirement obligations and accrued environmental costs	—			521		176		—		697
Deferred income taxes	—			4,567		1,129		(4	)	5,692
Employee benefit obligations	—			596		197		—		793
Other liabilities and deferred credits	6,282			2,198		6,458		(14,443	)	495
Total Liabilities	12,177			17,061		15,139		(15,359	)	29,018
Common stock	14,346			25,400		8,020		(33,420	)	14,346
Retained earnings	6,991			7,983		1,249		(9,261	)	6,962
Accumulated other comprehensive income	77			77		352		(429	)	77
Noncontrolling interests	—			—		444		—		444
Total Liabilities and Equity	$	33,591		50,521		25,204		(58,469	)	50,847
	Millions of Dollars
	At December 31, 2013
Balance Sheet	Phillips 66			Phillips 66 Company		All Other Subsidiaries		Consolidating Adjustments		Total Consolidated
Assets
Cash and cash equivalents	$	—		2,162		3,238		—		5,400
Accounts and notes receivable	9			2,174		8,130		(681	)	9,632
Inventories	—			1,962		1,392		—		3,354
Prepaid expenses and other current assets	10			368		473		—		851
Total Current Assets	19			6,666		13,233		(681	)	19,237
Investments and long-term receivables	33,178			27,417		7,135		(56,510	)	11,220
Net properties, plants and equipment	—			12,031		3,367		—		15,398
Goodwill	—			3,094		2		—		3,096
Intangibles	—			694		4		—		698
Other assets	40			112		1		(4	)	149
Total Assets	$	33,237		50,014		23,742		(57,195	)	49,798
Liabilities and Equity
Accounts payable	$	1		7,507		4,263		(681	)	11,090
Short-term debt	—			18		6		—		24
Accrued income and other taxes	—			250		622		—		872
Employee benefit obligations	—			422		54		—		476
Other accruals	49			178		242		—		469
Total Current Liabilities	50			8,375		5,187		(681	)	12,931
Long-term debt	5,796			152		183		—		6,131
Asset retirement obligations and accrued environmental costs	—			527		173		—		700
Deferred income taxes	—			5,045		1,084		(4	)	6,125
Employee benefit obligations	—			724		197		—		921
Other liabilities and deferred credits	5,441			2,155		6,691		(13,689	)	598
Total Liabilities	11,287			16,978		13,515		(14,374	)	27,406
Common stock	16,291			25,938		8,302		(34,240	)	16,291
Retained earnings	5,622			7,061		1,163		(8,224	)	5,622
Accumulated other comprehensive income	37			37		320		(357	)	37
Noncontrolling interests	—			—		442		—		442
Total Liabilities and Equity	$	33,237		50,014		23,742		(57,195	)	49,798
	Millions of Dollars
	Three Months Ended March 31, 2014
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 continuing operating activities	$	52		11		1,438		(105	)	1,396
Net cash provided by discontinued operations	—			—		2		—		2
Net Cash Provided by Operating Activities	52			11		1,440		(105	)	1,398
Cash Flows From Investing Activities
Capital expenditures and investments*	—			(841	)	(449	)	718		(572	)
Proceeds from asset dispositions	—			871		36		(400	)	507
Intercompany lending activities	1,291			(66	)	(1,225	)	—		—
Other	—			(38	)	51		—		13
Net cash provided by (used in) continuing investing activities	1,291			(74	)	(1,587	)	318		(52	)
Net cash used in discontinued operations	—			—		(34	)	—		(34	)
Net Cash Provided by (Used in) Investing Activities	1,291			(74	)	(1,621	)	318		(86	)
Cash Flows From Financing Activities
Repayment of debt	—			(3	)	(5	)	—		(8	)
Issuance of common stock	(20		)	—		—		—		(20	)
Repurchase of common stock	(640		)	—		—		—		(640	)
Share exchange—PSPI transaction	(450		)	—		—		—		(450	)
Dividends paid on common stock	(229		)	—		(93	)	93		(229	)
Distributions to controlling interests	—			—		(274	)	274		—
Distributions to noncontrolling interests	—			—		(4	)	—		(4	)
Other*	(4		)	—		580		(580	)	(4	)
Net cash provided by (used in) continuing financing activities	(1,343		)	(3	)	204		(213	)	(1,355	)
Net cash provided by (used in) discontinued operations	—			—		—		—		—
Net Cash Provided by (Used in) Financing Activities	(1,343		)	(3	)	204		(213	)	(1,355	)
Effect of Exchange Rate Changes on Cash and Cash Equivalents	—			—		(31	)	—		(31	)
Net Change in Cash and Cash Equivalents	—			(66	)	(8	)	—		(74	)
Cash and cash equivalents at beginning of period	—			2,162		3,238		—		5,400
Cash and Cash Equivalents at End of Period	$	—		2,096		3,230		—		5,326
* Includes intercompany capital contributions.
	Millions of Dollars
	Three Months Ended March 31, 2013
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 continuing operating activities	$	70		1,335		786		—		2,191
Net cash provided by discontinued operations	—			—		22		—		22
Net Cash Provided by Operating Activities	70			1,335		808		—		2,213
Cash Flows From Investing Activities
Capital expenditures and investments	—			(186	)	(216	)	20		(382	)
Proceeds from asset dispositions	—			—		9		—		9
Intercompany lending activities	515			(723	)	208		—		—
Collection of advances/loans—related parties	—			—		55		—		55
Net cash provided by (used in) continuing investing activities	515			(909	)	56		20		(318	)
Net cash used in discontinued operations	—			—		(5	)	—		(5	)
Net Cash Provided by (Used in) Investing Activities	515			(909	)	51		20		(323	)
Cash Flows From Financing Activities
Repayment of debt	—			(3	)	—		—		(3	)
Issuance of common stock	(6		)	—		—		—		(6	)
Repurchase of common stock	(382		)	—		—		—		(382	)
Dividends paid on common stock	(194		)	—		—		—		(194	)
Other	(3		)	3		20		(20	)	—
Net cash provided by (used in) continuing financing activities	(585		)	—		20		(20	)	(585	)
Net cash provided by (used in) discontinued operations	—			—		—		—		—
Net Cash Provided by (Used in) Financing Activities	(585		)	—		20		(20	)	(585	)
Effect of Exchange Rate Changes on Cash and Cash Equivalents	—			—		(26	)	—		(26	)
Net Change in Cash and Cash Equivalents	—			426		853		—		1,279
Cash and cash equivalents at beginning of period	—			2,410		1,064		—		3,474
Cash and Cash Equivalents at End of Period	$	—		2,836		1,917		—		4,753

Interim_Financial_Information_

Interim Financial Information Interim Financial Information (Policies)	3 Months Ended
	Mar. 31, 2014
Interim Financial Information [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.
Commitments and 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 record 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.

Inventories_Tables

Inventories (Tables)	3 Months Ended
	Mar. 31, 2014
Inventory Disclosure [Abstract]	'
Summary of Inventories	'
	Inventories consisted of the following:
		Millions of Dollars
		March 31		December 31
		2014		2013
	Crude oil and petroleum products	$	5,642	3,093
	Materials and supplies	266		261
		$	5,908	3,354

Investments_Loans_and_LongTerm1

Investments, Loans and Long-Term Receivables (Tables)	3 Months Ended
	Mar. 31, 2014
Equity Method Investments and Joint Ventures [Abstract]	'
Summary of Financial Information	'
	Summarized 100 percent financial information for WRB Refining LP (WRB) and Chevron Phillips Chemical Company LLC (CPChem) were as follows:
		Millions of Dollars
		Three Months Ended
		31-Mar
		2014		2013
	Revenues	$	7,998	8,140
	Income before income taxes	1,124		1,768
	Net income	1,101		1,750

Properties_Plants_and_Equipmen1

Properties, Plants and Equipment (Tables)	3 Months Ended
	Mar. 31, 2014
Property, Plant and Equipment [Abstract]	'
Properties, Plants and Equipment with Associated Accumulated Depreciation and Amortization	'
	Our investment in PP&E, with the associated accumulated depreciation and amortization (Accum. D&A), was:
		Millions of Dollars
		31-Mar-14				31-Dec-13
		Gross		Accum.	Net	Gross	Accum.	Net
		PP&E		D&A	PP&E	PP&E	D&A	PP&E
	Midstream	$	3,092	1,122	1,970	2,865	1,104	1,761
	Chemicals	—		—	—	—	—	—
	Refining	19,372		6,874	12,498	19,191	6,718	12,473
	Marketing and Specialties	1,525		753	772	1,395	749	646
	Corporate and Other	989		478	511	975	457	518
	Discontinued Operations*	—		—	—	—	—	—
		$	24,978	9,227	15,751	24,426	9,028	15,398
	* At December 31, 2013, net PP&E of $58 million associated with discontinued operations was classified as current assets.

Goodwill_Tables

Goodwill (Tables)	3 Months Ended
	Mar. 31, 2014
Goodwill [Abstract]	'
Carrying amount of goodwill	'
	The carrying amount of goodwill was as follows:
		Millions of Dollars
		March 31		December 31
		2014		2013
	Midstream	$	518	518
	Refining	1,912		1,867
	Marketing and Specialties	711		711
		$	3,141	3,096

Impairments_Tables

Impairments (Tables)	3 Months Ended
	Mar. 31, 2014
Impairment Of Long Lived Assets Abstract [Abstract]	'
Impairment Charges	'
	The three-month periods ended March 31, 2014 and 2013, included the following before-tax impairment charges:
		Millions of Dollars
		Three Months Ended
		31-Mar
		2014		2013
	Refining	$	1	—
	Marketing and Specialties	—		15
	Corporate and Other	—		9
		$	1	24

Earnings_per_Share_Tables

Earnings per Share (Tables)	3 Months Ended
	Mar. 31, 2014
Earnings Per Share [Abstract]	'
Reconciliation of Basic and Diluted Earnings Per Share	'
		Three Months Ended
		31-Mar
		2014				2013
		Basic			Diluted	Basic		Diluted
	Amounts attributed to Phillips 66 Common Stockholders (millions):
	Income from continuing operations attributable to Phillips 66	$	866		866	1,392		1,392
	Income allocated to participating securities	(1		)	—	(1	)	—
	Income from continuing operations available to common stockholders	865			866	1,391		1,392
	Discontinued operations	706			706	15		15
	Net Income available to common stockholders	$	1,571		1,572	1,406		1,407
	Weighted-average common shares outstanding (thousands):	580,027			584,053	621,309		625,030
	Effect of stock-based compensation	4,026			5,522	3,721		6,258
	Weighted-average common shares outstanding—EPS	584,053			589,575	625,030		631,288
	Earnings Per Share of Common Stock (dollars):
	Income from continuing operations attributable to Phillips 66	$	1.48		1.47	2.23		2.21
	Discontinued operations	1.21			1.2	0.02		0.02
	Earnings Per Share	$	2.69		2.67	2.25		2.23

Derivatives_and_Financial_Inst1

Derivatives and Financial Instruments (Tables)	3 Months Ended
	Mar. 31, 2014
Derivative Instruments and Hedging Activities Disclosure [Abstract]	'
Summary of Fair Value of Commodity Derivative Assets and Liabilities and Gains (Losses) from Derivative Contracts	'
	The following table indicates the balance sheet line items that include the fair values of commodity derivative assets and liabilities presented net (i.e., commodity derivative assets and liabilities with the same counterparty are netted where the right of setoff exists); however, the balances in the following table are presented gross. For information on the impact of counterparty netting and collateral netting, see Note 14—Fair Value Measurements.
		Millions of Dollars
		March 31			December 31
		2014			2013
	Assets
	Accounts and notes receivable	$	—		2
	Prepaid expenses and other current assets	486			592
	Other assets	1			2
	Liabilities
	Other accruals	472			633
	Other liabilities and deferred credits	1			1
	Hedge accounting has not been used for any item in the table.
	The gains (losses) from commodity derivatives incurred, and the line items where they appear on our consolidated statement of income, were:
		Millions of Dollars
		Three Months Ended
		31-Mar
		2014			2013
	Sales and other operating revenues	$	57		(6	)
	Equity in earnings of affiliates	—			2
	Other income	14			3
	Purchased crude oil and products	2			89
	Hedge accounting has not been used for any item in the table.
Summary of Material Net Exposures and Notional Amount of Derivative Contracts	'
		Open Position
		Long/(Short)
		March 31		December 31
		2014		2013
	Commodity
	Crude oil, refined products and NGL (millions of barrels)	(24	)	(9	)

Fair_Value_Measurements_Tables

Fair Value Measurements (Tables)	3 Months Ended
	Mar. 31, 2014
Fair Value Disclosures [Abstract]	'
Fair Value Hierarchy for Material Financial Instruments and Derivative Assets and Liabilities, Including the Effect of Counterparty Netting	'
	The carrying values and fair values by hierarchy of our material financial instruments, either carried or disclosed at fair value, and derivative assets and liabilities, including any effects of master netting agreements or collateral, were:
		Millions of Dollars
		31-Mar-14
		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	Cash Collateral Received or Paid, Not Offset on Balance Sheet
		Level 1		Level 2	Level 3
	Commodity Derivative Assets
	Exchange-cleared instruments	$	203	248	—	451	(444	)	—		—		7	—
	OTC instruments	—		9	—	9	(4	)	—		—		5	—
	Physical forward contracts*	—		23	4	27	—		—		—		27	—
	Rabbi trust assets	64		—	—	64	N/A		N/A		—		64	N/A
		$	267	280	4	551	(448	)	—		—		103
	Commodity Derivative Liabilities
	Exchange-cleared instruments	$	207	241	—	448	(444	)	(4	)	—		—	—
	OTC instruments	—		11	—	11	(4	)	—		—		7	—
	Physical forward contracts*	—		13	1	14	—		—		—		14	—
	Floating-rate debt	53		—	—	53	N/A		N/A		—		53	N/A
	Fixed-rate debt, excluding capital leases**	—		6,347	—	6,347	N/A		N/A		(383	)	5,964	N/A
		$	260	6,612	1	6,873	(448	)	(4	)	(383	)	6,038
	* Physical forward contracts may have a larger value on the balance sheet than disclosed in the fair value hierarchy when the remaining contract term at the reporting date is greater than 12 months and the short-term portion is an asset while the long-term portion is a liability, or vice versa.
	** We carry fixed-rate debt on the balance sheet at amortized cost.
		Millions of Dollars
		31-Dec-13
		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	Cash Collateral Received or Paid, Not Offset on Balance Sheet
		Level 1		Level 2	Level 3
	Commodity Derivative Assets
	Exchange-cleared instruments	$	227	332	—	559	(538	)	—		—		21	—
	OTC instruments	—		10	—	10	(8	)	—		—		2	—
	Physical forward contracts*	—		25	2	27	—		—		—		27	—
	Rabbi trust assets	64		—	—	64	N/A		N/A		—		64	N/A
		$	291	367	2	660	(546	)	—		—		114
	Commodity Derivative Liabilities
	Exchange-cleared instruments	$	253	326	—	579	(538	)	(41	)	—		—	—
	OTC instruments	—		11	—	11	(8	)	—		—		3	—
	Physical forward contracts*	—		43	1	44	—		—		—		44	—
	Floating-rate debt	50		—	—	50	N/A		N/A		—		50	N/A
	Fixed-rate debt, excluding capital leases**	—		6,168	—	6,168	N/A		N/A		(262	)	5,906	N/A
		$	303	6,548	1	6,852	(546	)	(41	)	(262	)	6,003
	* Physical forward contracts may have a larger value on the balance sheet than disclosed in the fair value hierarchy when the remaining contract term at the reporting date is greater than 12 months and the short-term portion is an asset while the long-term portion is a liability, or vice versa.
	** We carry fixed-rate debt on the balance sheet at amortized cost.
Value of Assets by Major Category, Measured at Fair Value on Nonrecurring Basis	'
	The following table shows the values of assets, by major category, measured at fair value on a nonrecurring basis in periods subsequent to their initial recognition during the three-month period ended March 31, 2013:
		Millions of Dollars
				Fair Value
				Measurements Using
		Fair Value*		Level 1	Level 2	Level 3		Before-
				Inputs	Inputs	Inputs		Tax Loss
	31-Mar-13
	Net properties, plants and equipment (held for use)	$	22	22	—	—		27
	* Represents the fair value at the time of the impairment

Employee_Benefit_Plans_Tables

Employee Benefit Plans (Tables)	3 Months Ended
	Mar. 31, 2014
Compensation and Retirement Disclosure [Abstract]	'
Components of Net Periodic Benefit Cost	'
	The components of net periodic benefit cost for the three months ended March 31, 2014 and 2013, were as follows:
		Millions of Dollars
		Pension Benefits									Other Benefits
		2014					2013				2014		2013
		U.S.			Int’l.		U.S.		Int’l.
	Components of Net Periodic Benefit Cost
	Three Months Ended March 31
	Service cost	$	30		10		31		9		2		2
	Interest cost	27			9		23		8		2		2
	Expected return on plan assets	(36		)	(9	)	(30	)	(7	)	—		—
	Amortization of prior service cost (credit)	1			(1	)	—		—		—		—
	Recognized net actuarial loss (gain)	10			3		21		5		(1	)	—
	Total net periodic benefit cost	$	32		12		45		15		3		4

Accumulated_Other_Comprehensiv1

Accumulated Other Comprehensive Income (Loss) (Tables)	3 Months Ended
	Mar. 31, 2014
Equity [Abstract]	'
Summary of Changes in and Reclassifications Out of Accumulated Other Comprehensive Income (Loss) by Component	'
	The following table depicts changes in accumulated other comprehensive income (loss) by component, as well as detail on reclassifications out of accumulated other comprehensive income (loss):
		Millions of Dollars
		Defined Benefit Plans			Foreign Currency Translation		Hedging		Accumulated Other Comprehensive Income (Loss)
	31-Dec-12	$	(778	)	466		(2	)	(314	)
	Other comprehensive loss before reclassifications	(8		)	(318	)	—		(326	)
	Amounts reclassified from accumulated other comprehensive income (loss)*
	Amortization of defined benefit plan items**
	Actuarial losses	18			—		—		18
	Net current period other comprehensive income (loss)	10			(318	)	—		(308	)
	31-Mar-13	$	(768	)	148		(2	)	(622	)
	31-Dec-13	$	(404	)	443		(2	)	37
	Other comprehensive income before reclassifications	2			30		—		32
	Amounts reclassified from accumulated other comprehensive income (loss)*
	Amortization of defined benefit plan items**
	Actuarial losses	8			—		—		8
	Net current period other comprehensive income	10			30		—		40
	31-Mar-14	$	(394	)	473		(2	)	77
	* There were no significant reclassifications related to foreign currency translation or hedging.
	** These accumulated other comprehensive income (loss) components are included in the computation of net periodic benefit cost (see Note 15—Employee Benefit Plans, for additional information).

Cash_Flow_Information_Tables

Cash Flow Information (Tables)	3 Months Ended
	Mar. 31, 2014
Supplemental Cash Flow Information [Abstract]	'
Cash Flow Information	'
		Millions of Dollars
		Three Months Ended
		31-Mar
		2014		2013
	Cash Payments
	Interest	$	12	15
	Income taxes	26		83
	Noncash Investing and Financing Activities
	As discussed more fully in Note 4—Assets Held for Sale or Sold, on February 25, 2014, we completed the exchange of our flow improvers business for shares of Phillips 66 common stock owned by the other party to the transaction. The noncash portion of the net assets surrendered by us in the exchange was $204 million, and we received approximately 17.4 million shares of our common stock, with a fair value at the time of the exchange of $1.35 billion.

Related_Party_Transactions_Tab

Related Party Transactions (Tables)	3 Months Ended
	Mar. 31, 2014
Related Party Transactions [Abstract]	'
Significant Transactions with Related Parties	'
	Significant transactions with related parties were:
		Millions of Dollars
		Three Months Ended
		31-Mar
		2014		2013
	Operating revenues and other income (a)	$	2,067	1,749
	Purchases (b)	3,991		4,287
	Operating expenses and selling, general and administrative expenses (c)	35		24
	Interest expense (d)	2		2
	(a)	We sold crude oil to the Malaysian Refining Company Sdn. Bdh. (MRC). NGL and other petrochemical feedstocks, along with solvents, were sold to CPChem, and gas oil and hydrogen feedstocks were sold to Excel. Certain feedstocks and intermediate products were sold to WRB. We also acted as agent for WRB in supplying other crude oil and feedstocks, wherein the transactional amounts did not impact operating revenues. In addition, we charged several of our affiliates, including CPChem and MSLP, for the use of common facilities, such as steam generators, waste and water treaters, and warehouse facilities.
	(b)	We purchased refined products from WRB. We also acted as agent for WRB in distributing asphalt and solvents, wherein the transactional amounts did not impact purchases. We purchased natural gas and NGL from DCP Midstream, LLC (DCP Midstream) and CPChem for use in our refinery processes and other feedstocks from various affiliates. We purchased refined products from MRC. We also paid fees to various pipeline equity companies for transporting finished refined products. In addition, we paid a price upgrade to MSLP for heavy crude processing. We purchased base oils and fuel products from Excel for use in our refining and specialty businesses.
	(c)	We paid utility and processing fees to various affiliates.
	(d)	We incurred interest expense on a note payable to MSLP.

Segment_Disclosures_and_Relate1

Segment Disclosures and Related Information (Tables)	3 Months Ended
	Mar. 31, 2014
Segment Reporting [Abstract]	'
Analysis of Results by Operating Segment	'
	Analysis of Results by Operating Segment
		Millions of Dollars
		Three Months Ended
		31-Mar
		2014			2013
	Sales and Other Operating Revenues
	Midstream
	Total sales	$	2,155		1,628
	Intersegment eliminations	(292		)	(232	)
	Total Midstream	1,863			1,396
	Chemicals	2			2
	Refining
	Total sales	29,215			29,762
	Intersegment eliminations	(17,558		)	(17,857	)
	Total Refining	11,657			11,905
	Marketing and Specialties
	Total sales	27,046			28,180
	Intersegment eliminations	(292		)	(278	)
	Total Marketing and Specialties	26,754			27,902
	Corporate and Other	7			6
	Consolidated sales and other operating revenues	$	40,283		41,211
	Net Income (Loss) Attributable to Phillips 66
	Midstream	$	188		111
	Chemicals	316			282
	Refining	306			904
	Marketing and Specialties	137			190
	Corporate and Other	(81		)	(95	)
	Discontinued operations	706			15
	Consolidated net income attributable to Phillips 66	$	1,572		1,407
		Millions of Dollars
		March 31			December 31
		2014			2013
	Total Assets
	Midstream	$	5,379		5,485
	Chemicals	4,689			4,377
	Refining	27,262			26,046
	Marketing and Specialties	7,335			7,331
	Corporate and Other	6,182			6,348
	Discontinued operations	—			211
	Consolidated total assets	$	50,847		49,798

Condensed_Consolidating_Financ1

Condensed Consolidating Financial Information (Tables)	3 Months Ended
	Mar. 31, 2014
Condensed Financial Information of Parent Company Only Disclosure [Abstract]	'
Condensed Income Statement	'
		Millions of Dollars
		Three Months Ended March 31, 2014
	Statement of Income	Phillips 66			Phillips 66 Company		All Other Subsidiaries		Consolidating Adjustments		Total Consolidated
	Revenues and Other Income
	Sales and other operating revenues	$	—		27,239		13,044		—		40,283
	Equity in earnings of affiliates	922			846		178		(1,168	)	778
	Net gain on dispositions	—			—		7		—		7
	Other income	—			22		9		—		31
	Intercompany revenues	—			278		4,701		(4,979	)	—
	Total Revenues and Other Income	922			28,385		17,939		(6,147	)	41,099
	Costs and Expenses
	Purchased crude oil and products	—			24,384		14,938		(4,941	)	34,381
	Operating expenses	2			903		191		(6	)	1,090
	Selling, general and administrative expenses	3			286		138		(25	)	402
	Depreciation and amortization	—			180		54		—		234
	Impairments	—			1		—		—		1
	Taxes other than income taxes	—			1,301		2,337		—		3,638
	Accretion on discounted liabilities	—			5		1		—		6
	Interest and debt expense	66			4		5		(7	)	68
	Foreign currency transaction gains	—			—		(19	)	—		(19	)
	Total Costs and Expenses	71			27,064		17,645		(4,979	)	39,801
	Income from continuing operations before income taxes	851			1,321		294		(1,168	)	1,298
	Provision (benefit) for income taxes	(25		)	399		52		—		426
	Income from Continuing Operations	876			922		242		(1,168	)	872
	Income from discontinued operations*	696			—		10		—		706
	Net income	1,572			922		252		(1,168	)	1,578
	Less: net income attributable to noncontrolling interests	—			—		6		—		6
	Net Income Attributable to Phillips 66	$	1,572		922		246		(1,168	)	1,572
	Comprehensive Income	$	1,612		962		284		(1,240	)	1,618
	* Net of provision for income taxes on discontinued operations	$	—		—		5		—		5
		Millions of Dollars
		Three Months Ended March 31, 2013
	Statement of Income	Phillips 66			Phillips 66 Company		All Other Subsidiaries		Consolidating Adjustments		Total Consolidated
	Revenues and Other Income
	Sales and other operating revenues	$	—		27,637		13,574		—		41,211
	Equity in earnings of affiliates	1,452			1,139		158		(1,710	)	1,039
	Net gain on dispositions	—			1		—		—		1
	Other income	—			15		8		—		23
	Intercompany revenues	—			490		4,833		(5,323	)	—
	Total Revenues and Other Income	1,452			29,282		18,573		(7,033	)	42,274
	Costs and Expenses
	Purchased crude oil and products	—			24,752		15,780		(5,289	)	35,243
	Operating expenses	—			799		186		(7	)	978
	Selling, general and administrative expenses	2			206		142		(23	)	327
	Depreciation and amortization	—			183		59		—		242
	Impairments	—			(3	)	27		—		24
	Taxes other than income taxes	—			1,209		2,115		—		3,324
	Accretion on discounted liabilities	—			5		1		—		6
	Interest and debt expense	67			3		4		(4	)	70
	Foreign currency transaction losses	—			1		1		—		2
	Total Costs and Expenses	69			27,155		18,315		(5,323	)	40,216
	Income from continuing operations before income taxes	1,383			2,127		258		(1,710	)	2,058
	Provision (benefit) for income taxes	(24		)	675		12		—		663
	Income from Continuing Operations	1,407			1,452		246		(1,710	)	1,395
	Income from discontinued operations*	—			—		15		—		15
	Net income	1,407			1,452		261		(1,710	)	1,410
	Less: net income attributable to noncontrolling interests	—			—		3		—		3
	Net Income Attributable to Phillips 66	$	1,407		1,452		258		(1,710	)	1,407
	Comprehensive Income	$	1,100		1,145		(54	)	(1,089	)	1,102
	* Net of provision for income taxes on discontinued operations:	$	—		—		8		—		8
Condensed Balance Sheet	'
		Millions of Dollars
		At March 31, 2014
	Balance Sheet	Phillips 66			Phillips 66 Company		All Other Subsidiaries		Consolidating Adjustments		Total Consolidated
	Assets
	Cash and cash equivalents	$	—		2,096		3,230		—		5,326
	Accounts and notes receivable	30			2,699		7,303		(912	)	9,120
	Inventories	—			3,414		2,494		—		5,908
	Prepaid expenses and other current assets	9			389		307		—		705
	Total Current Assets	39			8,598		13,334		(912	)	21,059
	Investments and long-term receivables	33,514			26,043		7,997		(57,553	)	10,001
	Net properties, plants and equipment	—			11,976		3,775		—		15,751
	Goodwill	—			3,099		42		—		3,141
	Intangibles	—			693		44		—		737
	Other assets	38			112		12		(4	)	158
	Total Assets	$	33,591		50,521		25,204		(58,469	)	50,847
	Liabilities and Equity
	Accounts payable	$	—		7,630		5,905		(912	)	12,623
	Short-term debt	—			18		22		—		40
	Accrued income and other taxes	—			992		599		—		1,591
	Employee benefit obligations	—			207		25		—		232
	Other accruals	99			184		395		—		678
	Total Current Liabilities	99			9,031		6,946		(912	)	15,164
	Long-term debt	5,796			148		233		—		6,177
	Asset retirement obligations and accrued environmental costs	—			521		176		—		697
	Deferred income taxes	—			4,567		1,129		(4	)	5,692
	Employee benefit obligations	—			596		197		—		793
	Other liabilities and deferred credits	6,282			2,198		6,458		(14,443	)	495
	Total Liabilities	12,177			17,061		15,139		(15,359	)	29,018
	Common stock	14,346			25,400		8,020		(33,420	)	14,346
	Retained earnings	6,991			7,983		1,249		(9,261	)	6,962
	Accumulated other comprehensive income	77			77		352		(429	)	77
	Noncontrolling interests	—			—		444		—		444
	Total Liabilities and Equity	$	33,591		50,521		25,204		(58,469	)	50,847
		Millions of Dollars
		At December 31, 2013
	Balance Sheet	Phillips 66			Phillips 66 Company		All Other Subsidiaries		Consolidating Adjustments		Total Consolidated
	Assets
	Cash and cash equivalents	$	—		2,162		3,238		—		5,400
	Accounts and notes receivable	9			2,174		8,130		(681	)	9,632
	Inventories	—			1,962		1,392		—		3,354
	Prepaid expenses and other current assets	10			368		473		—		851
	Total Current Assets	19			6,666		13,233		(681	)	19,237
	Investments and long-term receivables	33,178			27,417		7,135		(56,510	)	11,220
	Net properties, plants and equipment	—			12,031		3,367		—		15,398
	Goodwill	—			3,094		2		—		3,096
	Intangibles	—			694		4		—		698
	Other assets	40			112		1		(4	)	149
	Total Assets	$	33,237		50,014		23,742		(57,195	)	49,798
	Liabilities and Equity
	Accounts payable	$	1		7,507		4,263		(681	)	11,090
	Short-term debt	—			18		6		—		24
	Accrued income and other taxes	—			250		622		—		872
	Employee benefit obligations	—			422		54		—		476
	Other accruals	49			178		242		—		469
	Total Current Liabilities	50			8,375		5,187		(681	)	12,931
	Long-term debt	5,796			152		183		—		6,131
	Asset retirement obligations and accrued environmental costs	—			527		173		—		700
	Deferred income taxes	—			5,045		1,084		(4	)	6,125
	Employee benefit obligations	—			724		197		—		921
	Other liabilities and deferred credits	5,441			2,155		6,691		(13,689	)	598
	Total Liabilities	11,287			16,978		13,515		(14,374	)	27,406
	Common stock	16,291			25,938		8,302		(34,240	)	16,291
	Retained earnings	5,622			7,061		1,163		(8,224	)	5,622
Accumulated other comprehensive income	37			37		320		(357	)	37
Noncontrolling interests	—			—		442		—		442
Total Liabilities and Equity	$	33,237		50,014		23,742		(57,195	)	49,798
Condensed Statement of Cash Flows	'
		Millions of Dollars
		Three Months Ended March 31, 2014
	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 continuing operating activities	$	52		11		1,438		(105	)	1,396
	Net cash provided by discontinued operations	—			—		2		—		2
	Net Cash Provided by Operating Activities	52			11		1,440		(105	)	1,398
	Cash Flows From Investing Activities
	Capital expenditures and investments*	—			(841	)	(449	)	718		(572	)
	Proceeds from asset dispositions	—			871		36		(400	)	507
	Intercompany lending activities	1,291			(66	)	(1,225	)	—		—
	Other	—			(38	)	51		—		13
	Net cash provided by (used in) continuing investing activities	1,291			(74	)	(1,587	)	318		(52	)
	Net cash used in discontinued operations	—			—		(34	)	—		(34	)
	Net Cash Provided by (Used in) Investing Activities	1,291			(74	)	(1,621	)	318		(86	)
	Cash Flows From Financing Activities
	Repayment of debt	—			(3	)	(5	)	—		(8	)
	Issuance of common stock	(20		)	—		—		—		(20	)
	Repurchase of common stock	(640		)	—		—		—		(640	)
	Share exchange—PSPI transaction	(450		)	—		—		—		(450	)
	Dividends paid on common stock	(229		)	—		(93	)	93		(229	)
	Distributions to controlling interests	—			—		(274	)	274		—
	Distributions to noncontrolling interests	—			—		(4	)	—		(4	)
	Other*	(4		)	—		580		(580	)	(4	)
	Net cash provided by (used in) continuing financing activities	(1,343		)	(3	)	204		(213	)	(1,355	)
	Net cash provided by (used in) discontinued operations	—			—		—		—		—
	Net Cash Provided by (Used in) Financing Activities	(1,343		)	(3	)	204		(213	)	(1,355	)
	Effect of Exchange Rate Changes on Cash and Cash Equivalents	—			—		(31	)	—		(31	)
	Net Change in Cash and Cash Equivalents	—			(66	)	(8	)	—		(74	)
	Cash and cash equivalents at beginning of period	—			2,162		3,238		—		5,400
	Cash and Cash Equivalents at End of Period	$	—		2,096		3,230		—		5,326
	* Includes intercompany capital contributions.
		Millions of Dollars
		Three Months Ended March 31, 2013
	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 continuing operating activities	$	70		1,335		786		—		2,191
	Net cash provided by discontinued operations	—			—		22		—		22
	Net Cash Provided by Operating Activities	70			1,335		808		—		2,213
	Cash Flows From Investing Activities
	Capital expenditures and investments	—			(186	)	(216	)	20		(382	)
	Proceeds from asset dispositions	—			—		9		—		9
	Intercompany lending activities	515			(723	)	208		—		—
	Collection of advances/loans—related parties	—			—		55		—		55
	Net cash provided by (used in) continuing investing activities	515			(909	)	56		20		(318	)
	Net cash used in discontinued operations	—			—		(5	)	—		(5	)
	Net Cash Provided by (Used in) Investing Activities	515			(909	)	51		20		(323	)
	Cash Flows From Financing Activities
	Repayment of debt	—			(3	)	—		—		(3	)
	Issuance of common stock	(6		)	—		—		—		(6	)
	Repurchase of common stock	(382		)	—		—		—		(382	)
	Dividends paid on common stock	(194		)	—		—		—		(194	)
	Other	(3		)	3		20		(20	)	—
	Net cash provided by (used in) continuing financing activities	(585		)	—		20		(20	)	(585	)
	Net cash provided by (used in) discontinued operations	—			—		—		—		—
	Net Cash Provided by (Used in) Financing Activities	(585		)	—		20		(20	)	(585	)
	Effect of Exchange Rate Changes on Cash and Cash Equivalents	—			—		(26	)	—		(26	)
	Net Change in Cash and Cash Equivalents	—			426		853		—		1,279
	Cash and cash equivalents at beginning of period	—			2,410		1,064		—		3,474
	Cash and Cash Equivalents at End of Period	$	—		2,836		1,917		—		4,753

Variable_Interest_Entities_VIE1

Variable Interest Entities (VIEs) (Narrative) (Details) (USD $)	Mar. 31, 2014	Mar. 31, 2014	Aug. 31, 2009	Aug. 28, 2009	Mar. 31, 2014	Apr. 30, 2012	Mar. 31, 2014	Mar. 31, 2014	Apr. 30, 2012	Aug. 27, 2009	Apr. 30, 2012
In Millions, unless otherwise specified		Merey Sweeny [Member]	Merey Sweeny [Member]	Merey Sweeny [Member]	Merey Sweeny [Member]	Merey Sweeny [Member]	Excel Paralubes [Member]	Excel Paralubes [Member]	Excel Paralubes [Member]	Conocophillips [Member]	Conocophillips [Member]
					Guarantees of Joint Venture Debt [Member]	Guarantees of Joint Venture Debt [Member]		Guarantees of Joint Venture Debt [Member]	Guarantees of Joint Venture Debt [Member]		Excel Paralubes [Member]
											Guarantees of Joint Venture Debt [Member]
Variable interest entities VIEs (Textual) [Abstract]	'	'	'	'	'	'	'	'	'	'	'
Additional ownership interest acquired in MSLP that is in dispute	'	'	50.00%	50.00%	'	'	'	'	'	'	'
Debt guarantee to lender of 8.85% senior notes issued by MSLP, percentage	'	'	'	'	100.00%	'	'	'	'	'	'
Stated interest rate of debt issued by VIE, percentage	'	'	'	'	8.85%	8.85%	'	'	7.43%	'	'
Maximum exposure under debt guarantee	'	'	'	'	$214	'	'	$58	'	'	'
Book value of investment in VIE	'	116	'	'	'	'	128	'	'	'	'
Percentage of ownership interest in Excel	'	'	'	'	'	'	50.00%	'	'	50.00%	'
Percentage of governance interest in Excel	'	'	'	'	'	'	50.00%	'	'	'	'
Liquidity support guarantee of VIE shared with CoVenturer	'	'	'	'	'	'	60	'	'	'	'
Percentage of guarantee	'	'	'	'	'	100.00%	50.00%	'	'	'	50.00%
Outstanding principal debt balance of Excel	'	'	'	'	'	'	116	'	'	'	'
Liquidity support guarantee of Excel	'	'	'	'	'	'	30	'	'	'	'
Maximum exposure to loss	190	'	'	'	'	'	'	'	'	'	'
Fxed annual contractual payments under the consignment fuels agreement	$80	'	'	'	'	'	'	'	'	'	'

Inventories_Summary_of_Invento

Inventories (Summary of Inventory) (Details) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Summary of inventories	'	'
Crude oil and petroleum products	$5,642	$3,093
Materials and supplies	266	261
Inventories	$5,908	$3,354

Inventories_Narrative_Details

Inventories (Narrative) (Details) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Inventory Disclosure [Abstract]	'	'
Inventories valued on the last-in, first out (LIFO) basis	$5,522	$2,945
Estimated of excess of current replacement cost over LIFO cost of inventories	$8,200	$7,600

Assets_Held_for_Sale_or_Sold_N

Assets Held for Sale or Sold (Narrative) (Details) (USD $)	3 Months Ended		2 Months Ended	3 Months Ended
In Millions, except Share data in Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Feb. 25, 2014	Mar. 31, 2014	Dec. 31, 2013
			Phillips Specialty Products Inc [Member]	Phillips Specialty Products Inc [Member]	Phillips Specialty Products Inc [Member]
			Marketing and Specialties [Member]	Marketing and Specialties [Member]	Marketing and Specialties [Member]
Assets Held for Sale or Sold (Narrative) [Abstract]	'	'	'	'	'
Carrying value	'	'	$685	'	$193
Net property, plant and equipment included in net carrying value of PSPI	'	'	60	'	58
Allocated goodwill included in net carrying value	'	'	117	'	117
Share exchange—PSPI transaction	-450	'	'	450	'
Shares of Phillips 66 common stock received in exchange	'	6,403	17,400	'	'
Before tax gain	'	'	696	'	'
Cash and cash equivalents included in carrying value	'	'	$481	'	'

Investments_Loans_and_LongTerm2

Investments, Loans and Long-Term Receivables (Summary of Financial Information for Equity Method Investments) (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Summary of financial information	'	'
Revenues	$7,998	$8,140
Income before income taxes	1,124	1,768
Net income	$1,101	$1,750

Investments_Loans_and_LongTerm3

Investments, Loans and Long-Term Receivables (Narrative) (Details) (USD $)	1 Months Ended	2 Months Ended				3 Months Ended
	Mar. 31, 2014	Mar. 01, 2014	Aug. 31, 2009	Aug. 28, 2009	Aug. 27, 2009	Mar. 31, 2014	Aug. 27, 2009
	WRB Refining LP [Member]	WRB Refining LP [Member]	Merey Sweeny [Member]	Merey Sweeny [Member]	Petroleos De Venezuela S.A. (PDVSA) [Member]	Cenovus Energy Inc [Member]	Conocophillips [Member]
						WRB Refining LP [Member]
Schedule of Equity Method Investments [Line Items]	'	'	'	'	'	'	'
Contribution to WRB Cenovus was obligated to make	'	'	'	'	'	$7,500,000,000	'
Total distribution received	1,232,000,000	'	'	'	'	'	'
Dividend considered an operating cash inflow	760,000,000	'	'	'	'	'	'
Dividend considered an investing cash inflow	'	472,000,000	'	'	'	'	'
Book value of our investment in WRB	2,017,000,000	'	'	'	'	'	'
Basis difference in book value of our investment in WRB	$3,511,000,000	'	'	'	'	'	'
Percentage of ownership interest	'	'	'	'	'	'	50.00%
Percentage of equity interest of others	'	'	'	'	50.00%	'	'
Additional ownership interest acquired	'	'	50.00%	50.00%	'	'	'

Properties_Plants_and_Equipmen2

Properties, Plants and Equipment (Details) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Properties, plants and equipment with the associated accumulated depreciation and amortization	'	'
Gross PP&E	$24,978	$24,426
Accum D&A	9,227	9,028
Net PP&E	15,751	15,398
Midstream [Member]	'	'
Properties, plants and equipment with the associated accumulated depreciation and amortization	'	'
Gross PP&E	3,092	2,865
Accum D&A	1,122	1,104
Net PP&E	1,970	1,761
Chemicals [Member]	'	'
Properties, plants and equipment with the associated accumulated depreciation and amortization	'	'
Gross PP&E	'	'
Accum D&A	'	'
Net PP&E	'	'
Refining [Member]	'	'
Properties, plants and equipment with the associated accumulated depreciation and amortization	'	'
Gross PP&E	19,372	19,191
Accum D&A	6,874	6,718
Net PP&E	12,498	12,473
Marketing and Specialties [Member]	'	'
Properties, plants and equipment with the associated accumulated depreciation and amortization	'	'
Gross PP&E	1,525	1,395
Accum D&A	753	749
Net PP&E	772	646
Corporate and Other [Member]	'	'
Properties, plants and equipment with the associated accumulated depreciation and amortization	'	'
Gross PP&E	989	975
Accum D&A	478	457
Net PP&E	511	518
Discontinued Operations [Member]	'	'
Properties, plants and equipment with the associated accumulated depreciation and amortization	'	'
Gross PP&E	'	0	[1]
Accum D&A	'	0	[1]
Net PP&E	'	0	[1]
Current Assets [Member]	'	'
Properties, plants and equipment with the associated accumulated depreciation and amortization	'	'
Net PP&E associated with discontinued operations classified as current assets	'	$58
[1]	At December 31, 2013, net PP&E of $58 million associated with discontinued operations was classified as current assets.

Goodwill_Details

Goodwill (Details) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Goodwill [Line Items]	'	'
Goodwill	$3,141	$3,096

Goodwill_Narrative_Details

Goodwill (Narrative) (Details) (USD $)	0 Months Ended	3 Months Ended		1 Months Ended
	Jan. 02, 2013	Mar. 31, 2014	Mar. 31, 2014	Mar. 31, 2014
		Refining [Member]	Marketing and Specialties [Member]	Power and Steam Generation Plant, Co-Venturerer [Member]
Business Acquisition [Line Items]	'	'	'	'
Goodwill reallocated from the Refining segment to the M&S segment	'	$52,000,000	($52,000,000)	'
Goodwill impairment recognition required after testing completed	0	'	'	'
Amount paid, net of acquired cash, to acquire our co-venturer's interest	'	'	'	70,000,000
Net PP&E provisionally recorded	'	'	'	141,000,000
Intangible assets provisionally recorded	'	'	'	40,000,000
Goodwill provisionally recorded	'	'	'	39,000,000
Debt provisionally recorded	'	'	'	$68,000,000

Impairments_Details

Impairments (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Impairment Charges	'	'
Before-tax impairment charges	$1	$24
Refining [Member]	'	'
Impairment Charges	'	'
Before-tax impairment charges	1	0
Marketing and Specialties [Member]	'	'
Impairment Charges	'	'
Before-tax impairment charges	0	15
Corporate and Other [Member]	'	'
Impairment Charges	'	'
Before-tax impairment charges	$0	$9

Impairments_Narrative_Details

Impairments (Narrative) (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2013	Mar. 31, 2014
		Marketing and Specialties [Member]
Impaired Long-Lived Assets Held and Used [Line Items]	'	'
Held-for-use impairment	$27	$15

Earnings_per_Share_Summary_of_

Earnings per Share (Summary of Earnings Per Share Calculation) (Details) (USD $)	3 Months Ended
In Millions, except Share data in Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Basic EPS Calculation	'	'
Income from continuing operations attributable to Phillips 66	$866	$1,392
Income allocated to participating securities	-1	-1
Income from continuing operations available to common stockholders	865	1,391
Discontinued operations	706	15
Income available to common stockholders - basic	1,571	1,406
Weighted-average common shares stockholders	580,027	621,309
Effect of stock-based compensation	4,026	3,721
Weighted-average commons shares outstanding - EPS	584,053	625,030
Income from continuing operations attributable to Phillips 66	$1.48	$2.23
Discontinued operations	$1.21	$0.02
Earnings Per Share	$2.69	$2.25
Diluted EPS Calculation	'	'
Income from continuing operations available to common stockholders	866	1,392
Income available to common stockholders	$1,572	$1,407
Dilutive effect of stock-based compensation	5,522	6,258
Weighted-average commons shares outstanding - EPS	589,575	631,288
Income from continuing operations attributable to Phillips 66	$1.47	$2.21
Discontinued operations	$1.20	$0.02
Earnings Per Share	$2.67	$2.23

Debt_Narrative_Details

Debt (Narrative) (Details) (USD $)	3 Months Ended			3 Months Ended	12 Months Ended
	Mar. 31, 2014	Mar. 31, 2014	Dec. 31, 2013	Mar. 31, 2014	Dec. 31, 2012	Dec. 31, 2013	Mar. 31, 2014	Jun. 30, 2013
		Revolving Credit Facility [Member]	Revolving Credit Facility [Member]	Trade Receivables Securitization Facility [Member]	Trade Receivables Securitization Facility [Member]	Trade Receivables Securitization Facility [Member]	Phillips 66 Partners LP [Member]	Phillips 66 Partners LP [Member]
							Revolving Credit Facility [Member]	Revolving Credit Facility [Member]
Debt Instrument [Line Items]	'	'	'	'	'	'	'	'
Amount of direct outstanding borrowings under revolving credit agreement	'	$0	$0	'	'	'	$0	'
Amount of direct outstanding borrowings under trade receivables securitization	'	'	'	0	0	'	'	'
Borrowing capacity under revolving credit agreement	'	4,500,000,000	'	'	'	'	'	250,000,000
Borrowing capacity under trade receivables securitization facility	'	'	'	696,000,000	'	'	'	'
Letters of credit issued	1,161,000,000	51,000,000	51,000,000	26,000,000	'	26,000,000	'	'
Aggregate total capacity available under these facilities	5,400,000,000	'	'	'	'	'	'	'
Debt classified as long-term debt	$800,000,000	'	'	'	'	'	'	'

Guarantees_Narrative_Details

Guarantees (Narrative) (Details) (USD $)	Mar. 31, 2014	Dec. 31, 2013	Mar. 31, 2014	Mar. 31, 2014	Mar. 31, 2014	Mar. 31, 2014	Apr. 30, 2012
In Millions, unless otherwise specified			Residual Value Guarantees [Member]	Other Guarantees [Member]	Indemnifications [Member]	Merey Sweeny [Member]	Merey Sweeny [Member]
						Guarantees of Joint Venture Debt [Member]	Guarantees of Joint Venture Debt [Member]
Guarantees (Textual) [Abstract]	'	'	'	'	'	'	'
Percentage of guarantee	'	'	'	'	'	'	100.00%
Stated interest rate of senior notes issued by MSLP, percentage	'	'	'	'	'	8.85%	8.85%
Maximum potential amount of future payments under the guarantees	'	'	$228	$314	'	$214	'
Remaining terms in years of guarantees outstanding	'	'	'	'10 years	'	'	'
Carrying amount of indemnifications	'	'	'	'	241	'	'
Environmental accruals included in recorded carrying amount	$488	$492	'	'	$107	'	'

Contingencies_and_Commitments_

Contingencies and Commitments (Narrative) (Details) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Contingencies and Commitments (Textual) [Abstract]	'	'
Total environmental accrual	$488	$492
Expected years to incur a substantial amount of expenditures	'30 years	'
Letters of credit issued	1,161	'
Trade Receivables Securitization Facility [Member]	'	'
Contingencies and Commitments (Textual) [Abstract]	'	'
Letters of credit issued	26	26
Revolving Credit Facility [Member]	'	'
Contingencies and Commitments (Textual) [Abstract]	'	'
Letters of credit issued	$51	$51

Derivatives_and_Financial_Inst2

Derivatives and Financial Instruments (Summary of Commodity Derivative Assets and Liabilities) (Details) (Commodity Derivatives [Member], USD $)	Mar. 31, 2014		Dec. 31, 2013
In Millions, unless otherwise specified
Other Current Assets [Member]	'		'
Fair value of commodity derivative assets and liabilities, without netting	'		'
Commodity derivative assets, fair value gross	$0	[1]	'
Accounts and notes receivable [Member]	'		'
Fair value of commodity derivative assets and liabilities, without netting	'		'
Commodity derivative assets, fair value gross	'		2	[1]
Prepaid Expenses and Other Current Assets [Member]	'		'
Fair value of commodity derivative assets and liabilities, without netting	'		'
Commodity derivative assets, fair value gross	486	[1]	592	[1]
Other Assets [Member]	'		'
Fair value of commodity derivative assets and liabilities, without netting	'		'
Commodity derivative assets, fair value gross	1	[1]	2	[1]
Other Accruals [Member]	'		'
Fair value of commodity derivative assets and liabilities, without netting	'		'
Commodity derivative liabilities, fair value gross	472	[1]	633	[1]
Other Liabilities and Deferred Credits [Member]	'		'
Fair value of commodity derivative assets and liabilities, without netting	'		'
Commodity derivative liabilities, fair value gross	$1	[1]	$1	[1]
[1]	Hedge accounting has not been used for any item in the table.

Derivatives_and_Financial_Inst3

Derivatives and Financial Instruments (Summary of Gains/(Losses) From Commodity Derivatives) (Details) (Commodity Derivatives [Member], USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014		Mar. 31, 2013
Sales and Other Operating Revenues [Member]	'		'
Summary of gains (losses) from commodity derivatives	'		'
Gains (losses) from commodity derivatives	$57	[1]	($6)
Equity in Earnings of Affiliates [Member]	'		'
Summary of gains (losses) from commodity derivatives	'		'
Gains (losses) from commodity derivatives	0	[1]	2
Other Income [Member]	'		'
Summary of gains (losses) from commodity derivatives	'		'
Gains (losses) from commodity derivatives	14	[1]	3
Purchased Crude Oil and Products [Member]	'		'
Summary of gains (losses) from commodity derivatives	'		'
Gains (losses) from commodity derivatives	$2	[1]	$89
[1]	Hedge accounting has not been used for any item in the table.

Derivatives_and_Financial_Inst4

Derivatives and Financial Instruments (Summary of Outstanding Commodity Derivative Contracts) (Details)	Mar. 31, 2014	Dec. 31, 2013
	MMBbls	MMBbls
Commodity	'	'
Crude oil, refined products and NGL (millions of barrels)	-24	-9

Derivatives_and_Financial_Inst5

Derivatives and Financial Instruments (Narrative) (Details)	3 Months Ended	12 Months Ended
	Mar. 31, 2014	Dec. 31, 2013
Financial instruments and derivative contracts (Textual) [Abstract]	'	'
Estimated percentage of derivative contract volume expiring within twelve months	99.00%	99.00%
Payment terms of receivables	'30 days or less	'

Fair_Value_Measurements_Summar

Fair Value Measurements (Summary of Fair Value of Derivative Assets and Liabilities and Effect of Counterparty Netting) (Details) (USD $)	Mar. 31, 2014		Dec. 31, 2013
In Millions, unless otherwise specified
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Effect of counterparty netting, commodity derivative assets	($448)		($546)
Effect of collateral netting, commodity derivative assets	'		0
Rabbi trust assets	64		64
Total assets, fair value disclosure gross	551		660
Effect of counterparty netting, commodity derivative liabilities	-448		-546
Effect of collateral netting, commodity derivative liabilities	-4		-41
Difference in carrying value and fair value	-383		-262
Total liabilities, fair value disclosure gross	6,873		6,852
Net carrying value presented on balance sheet, commodity derivative liabilities and debt	6,038		6,003
Carrying (Reported) Amount, Fair Value Disclosure [Member]	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Rabbi trust assets	64		64
Net carrying value presented on balance sheet, commodity derivative assets and investments	103		114
Floating Rate Debt [Member]	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Debt excluding capital leases, fair value gross	53		50
Net carrying value presented on balance sheet, debt	53		50
Fixed Rate Debt Excluding Capital Leases [Member]	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Debt excluding capital leases, fair value gross	6,347	[1]	6,168	[1]
Net carrying value presented on balance sheet, debt	5,964	[1]	5,906	[1]
Difference in carrying value and fair value	-383	[1]	-262	[1]
Level 1 [Member]	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Rabbi trust assets	64		64
Total assets, fair value disclosure gross	267		291
Total liabilities, fair value disclosure gross	260		303
Level 1 [Member] | Floating Rate Debt [Member]	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Debt excluding capital leases, fair value gross	53		50
Level 1 [Member] | Fixed Rate Debt Excluding Capital Leases [Member]	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Debt excluding capital leases, fair value gross	0	[1]	0	[1]
Level 2 [Member]	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Rabbi trust assets	0		0
Total assets, fair value disclosure gross	280		367
Total liabilities, fair value disclosure gross	6,612		6,548
Level 2 [Member] | Floating Rate Debt [Member]	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Debt excluding capital leases, fair value gross	0		0
Level 2 [Member] | Fixed Rate Debt Excluding Capital Leases [Member]	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Debt excluding capital leases, fair value gross	6,347	[1]	6,168	[1]
Level 3 [Member]	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Rabbi trust assets	0		0
Total assets, fair value disclosure gross	4		2
Total liabilities, fair value disclosure gross	1		1
Level 3 [Member] | Floating Rate Debt [Member]	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Debt excluding capital leases, fair value gross	0		0
Level 3 [Member] | Fixed Rate Debt Excluding Capital Leases [Member]	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Debt excluding capital leases, fair value gross	0	[1]	0	[1]
Exchange-cleared Instruments [Member]	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Commodity derivative assets, fair value gross	451		559
Effect of counterparty netting, commodity derivative assets	444		538
Effect of collateral netting, commodity derivative assets	0		0
Net carrying value presented on balance sheet, commodity derivative assets	7		21
Commodity derivative liabilities, fair value gross	448		579
Effect of counterparty netting, commodity derivative liabilities	444		538
Effect of collateral netting, commodity derivative liabilities	4		41
Net carrying value presented on balance sheet, commodity derivative liabilities	'		0
Derivative, Collateral, Right to Reclaim Cash	'		'
Exchange-cleared Instruments [Member] | Level 1 [Member]	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Commodity derivative assets, fair value gross	203		227
Commodity derivative liabilities, fair value gross	207		253
Exchange-cleared Instruments [Member] | Level 2 [Member]	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Commodity derivative assets, fair value gross	248		332
Commodity derivative liabilities, fair value gross	241		326
Exchange-cleared Instruments [Member] | Level 3 [Member]	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Commodity derivative assets, fair value gross	0		0
Commodity derivative liabilities, fair value gross	0		0
OTC Instruments [Member]	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Commodity derivative assets, fair value gross	9		10
Effect of counterparty netting, commodity derivative assets	4		8
Net carrying value presented on balance sheet, commodity derivative assets	5		2
Commodity derivative liabilities, fair value gross	11		11
Effect of counterparty netting, commodity derivative liabilities	4		8
Net carrying value presented on balance sheet, commodity derivative liabilities	7		3
OTC Instruments [Member] | Level 1 [Member]	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Commodity derivative assets, fair value gross	0		0
Commodity derivative liabilities, fair value gross	0		0
OTC Instruments [Member] | Level 2 [Member]	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Commodity derivative assets, fair value gross	9		10
Commodity derivative liabilities, fair value gross	11		11
OTC Instruments [Member] | Level 3 [Member]	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Commodity derivative assets, fair value gross	0		0
Commodity derivative liabilities, fair value gross	0		0
Physical Forward Contracts [Member]	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Commodity derivative assets, fair value gross	27	[2]	27	[2]
Effect of counterparty netting, commodity derivative assets	0	[2]	0	[2]
Net carrying value presented on balance sheet, commodity derivative assets	27	[2]	27	[2]
Commodity derivative liabilities, fair value gross	14	[2]	44	[2]
Effect of counterparty netting, commodity derivative liabilities	0	[2]	0	[2]
Net carrying value presented on balance sheet, commodity derivative liabilities	14	[2]	44	[2]
Physical Forward Contracts [Member] | Level 1 [Member]	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Commodity derivative assets, fair value gross	0	[2]	0	[2]
Commodity derivative liabilities, fair value gross	0	[2]	0	[2]
Physical Forward Contracts [Member] | Level 2 [Member]	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Commodity derivative assets, fair value gross	23	[2]	25	[2]
Commodity derivative liabilities, fair value gross	13	[2]	43	[2]
Physical Forward Contracts [Member] | Level 3 [Member]	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Commodity derivative assets, fair value gross	4	[2]	2	[2]
Commodity derivative liabilities, fair value gross	$1	[2]	$1
[1]	We carry fixed-rate debt on the balance sheet at amortized cost.
[2]	Physical forward contracts may have a larger value on the balance sheet than disclosed in the fair value hierarchy when the remaining contract term at the reporting date is greater than 12 months and the short-term portion is an asset while the long-term portion is a liability, or vice versa.

Fair_Value_Measurements_Summar1

Fair Value Measurements (Summary of Nonrecurring Fair Value Measurements) (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2013
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'
Before-tax loss on net properties, plants and equipment (held for use)	$27
Fair Value, Measurements, Nonrecurring [Member]	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'
Net properties, plants and equipment (held for use)	22	[1]
Fair Value, Measurements, Nonrecurring [Member] | Level 1 [Member]	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'
Net properties, plants and equipment (held for use)	$22
[1]	Represents the fair value at the time of the impairment.

Fair_Value_Measurements_Narrat

Fair Value Measurements (Narrative) (Details) (USD $)	3 Months Ended			3 Months Ended		3 Months Ended			3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2013	Mar. 31, 2014	Dec. 31, 2013	Mar. 31, 2014	Dec. 31, 2013	Mar. 31, 2013	Mar. 31, 2014	Dec. 31, 2013	Mar. 31, 2013
				M&S Segment [Member]	M&S Segment [Member]	M&S Segment [Member]	Corporate and Other [Member]	Corporate and Other [Member]	Corporate Property [Member]
						Composite Graphite Business [Member]			Corporate and Other [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'	'	'	'	'	'	'
Carrying amount of net PP&E held for use	'	$15,751	$15,398	$772	$646	$18	$511	$518	$31
Before-tax loss on net properties, plants and equipment (held for use)	27	'	'	15	'	18	'	'	9
Fair value of net PP&E held for use	'	'	'	'	'	'	'	'	$22

Employee_Benefit_Plans_Summary

Employee Benefit Plans (Summary of Components of Net Periodic Benefit Cost) (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
United States Pension Plans of U S Entity, Defined Benefit [Member]	'	'
Components of Net Periodic Benefit Cost	'	'
Service cost	$30	$31
Interest cost	27	23
Expected return on plan assets	-36	-30
Amortization of prior service cost (credit)	1	'
Recognized net actuarial loss (gain)	10	21
Total net periodic benefit cost	32	45
Foreign Pension Plans, Defined Benefit [Member]	'	'
Components of Net Periodic Benefit Cost	'	'
Service cost	10	9
Interest cost	9	8
Expected return on plan assets	-9	-7
Amortization of prior service cost (credit)	-1	'
Recognized net actuarial loss (gain)	3	5
Total net periodic benefit cost	12	15
Other Postretirement Benefit Plans, Defined Benefit [Member]	'	'
Components of Net Periodic Benefit Cost	'	'
Service cost	2	2
Interest cost	2	2
Amortization of prior service cost (credit)	'	'
Recognized net actuarial loss (gain)	-1	'
Total net periodic benefit cost	$3	$4

Employee_Benefit_Plans_Narrati

Employee Benefit Plans (Narrative) (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014
United States Pension Plans of U S Entity, Defined Benefit [Member]	'
Employee Benefit Plans (Textual) [Abstract]	'
Company contributions to plans	$162
Foreign Pension Plans, Defined Benefit [Member]	'
Employee Benefit Plans (Textual) [Abstract]	'
Company contributions to plans	14
Additional contributions expected to be made in 2014	$60

Accumulated_Other_Comprehensiv2

Accumulated Other Comprehensive Income (Loss) (Summary of the Components of Accumulated Other Comprehensive Income (Loss) and Detail on Reclassifications) (Details) (USD $)	3 Months Ended			12 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014		Mar. 31, 2013	Dec. 31, 2013
Changes in accumulated other comprehensive income (loss) by component	'		'	'
Accumulated other comprehensive income (loss), beginning balance	$37		($314)	($314)
Other comprehensive income (loss) before reclassifications	32		'	-326
Actuarial losses	8	[1]	'	18	[1]
Other Comprehensive Income (Loss), Net of Tax	40		-308	-308
Accumulated other comprehensive income (loss), ending balance	77		-622	37
Defined Benefit Plans [Member]	'		'	'
Changes in accumulated other comprehensive income (loss) by component	'		'	'
Accumulated other comprehensive income (loss), beginning balance	-404		-778	-778
Other comprehensive income (loss) before reclassifications	2		'	-8
Actuarial losses	8	[2]	'	18	[2]
Other Comprehensive Income (Loss), Net of Tax	10		'	10
Accumulated other comprehensive income (loss), ending balance	-394		-768	-404
Foreign Curency Translation [Member]	'		'	'
Changes in accumulated other comprehensive income (loss) by component	'		'	'
Accumulated other comprehensive income (loss), beginning balance	443		466	466
Other comprehensive income (loss) before reclassifications	30		'	-318
Other Comprehensive Income (Loss), Net of Tax	30		'	-318
Accumulated other comprehensive income (loss), ending balance	473		148	443
Hedging [Member]	'		'	'
Changes in accumulated other comprehensive income (loss) by component	'		'	'
Accumulated other comprehensive income (loss), beginning balance	-2		-2	-2
Other comprehensive income (loss) before reclassifications	0		'	0
Other Comprehensive Income (Loss), Net of Tax	0		'	0
Accumulated other comprehensive income (loss), ending balance	($2)		($2)	($2)
[1]	There were no significant reclassifications related to foreign currency translation or hedging.
[2]	These accumulated other comprehensive income (loss) components are included in the computation of net periodic benefit cost (see Note 15—Employee Benefit Plans, for additional information).

Cash_Flow_Information_Summary_

Cash Flow Information (Summary of Cash Flow Information) (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Supplemental Cash Flow Information [Abstract]	'	'
Interest	$12	$15
Income taxes	$26	$83

Cash_Flow_Information_Narrativ

Cash Flow Information (Narrative) (Details) (Phillips Specialty Products Inc [Member], Marketing and Specialties [Member], USD $)	2 Months Ended
Share data in Millions, unless otherwise specified	Feb. 25, 2014
Phillips Specialty Products Inc [Member] | Marketing and Specialties [Member]	'
Noncash or Part Noncash Divestitures [Line Items]	'
Noncash portion of net assets surrendered in exchange	$204,000,000
Number of shares of Phillips 66 common stock received in exchange	17.4
Fair value of shares at time of the exchange	$1,350,000,000

Related_Party_Transactions_Sum

Related Party Transactions (Summary of Significant Related Party Transactions) (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014		Mar. 31, 2013
Significant transactions with related parties	'		'
Operating revenues and other income	$2,067	[1]	$1,749	[1]
Purchases	3,991	[2]	4,287	[2]
Operating expenses and selling, general and administrative expenses	35	[3]	24	[3]
Interest expense	$2	[4]	$2	[4]
[1]	We sold crude oil to the Malaysian Refining Company Sdn. Bdh. (MRC). NGL and other petrochemical feedstocks, along with solvents, were sold to CPChem, and gas oil and hydrogen feedstocks were sold to Excel. Certain feedstocks and intermediate products were sold to WRB. We also acted as agent for WRB in supplying other crude oil and feedstocks, wherein the transactional amounts did not impact operating revenues. In addition, we charged several of our affiliates, including CPChem and MSLP, for the use of common facilities, such as steam generators, waste and water treaters, and warehouse facilities.
[2]	We purchased refined products from WRB. We also acted as agent for WRB in distributing asphalt and solvents, wherein the transactional amounts did not impact purchases. We purchased natural gas and NGL from DCP Midstream, LLC (DCP Midstream) and CPChem for use in our refinery processes and other feedstocks from various affiliates. We purchased refined products from MRC. We also paid fees to various pipeline equity companies for transporting finished refined products. In addition, we paid a price upgrade to MSLP for heavy crude processing. We purchased base oils and fuel products from Excel for use in our refining and specialty businesses.
[3]	We paid utility and processing fees to various affiliates.
[4]	We incurred interest expense on a note payable to MSLP.

Segment_Disclosures_and_Relate2

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 $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014		Mar. 31, 2013		Dec. 31, 2013
Analysis of results by operating segment	'		'		'
Sales and other operating revenues	$40,283	[1]	$41,211	[1]	'
Net Income (Loss) Attributable to Phillips 66	1,572		1,407		'
Analysis of results of assets by operating segment	'		'		'
Total Assets	50,847		'		49,798
Midstream [Member]	'		'		'
Analysis of results by operating segment	'		'		'
Sales and other operating revenues	1,863		1,396		'
Net Income (Loss) Attributable to Phillips 66	188		111		'
Analysis of results of assets by operating segment	'		'		'
Total Assets	5,379		'		5,485
Chemicals [Member]	'		'		'
Analysis of results by operating segment	'		'		'
Sales and other operating revenues	2		2		'
Net Income (Loss) Attributable to Phillips 66	316		282		'
Analysis of results of assets by operating segment	'		'		'
Total Assets	4,689		'		4,377
Refining [Member]	'		'		'
Analysis of results by operating segment	'		'		'
Sales and other operating revenues	11,657		11,905		'
Net Income (Loss) Attributable to Phillips 66	306		904		'
Analysis of results of assets by operating segment	'		'		'
Total Assets	27,262		'		26,046
Marketing and Specialties [Member]	'		'		'
Analysis of results by operating segment	'		'		'
Sales and other operating revenues	26,754		27,902		'
Net Income (Loss) Attributable to Phillips 66	137		190		'
Analysis of results of assets by operating segment	'		'		'
Total Assets	7,335		'		7,331
Corporate and Other [Member]	'		'		'
Analysis of results by operating segment	'		'		'
Sales and other operating revenues	7		6		'
Net Income (Loss) Attributable to Phillips 66	-81		-95		'
Analysis of results of assets by operating segment	'		'		'
Total Assets	6,182		'		6,348
Operating Segments [Member] | Midstream [Member]	'		'		'
Analysis of results by operating segment	'		'		'
Sales and other operating revenues	2,155		1,628		'
Operating Segments [Member] | Refining [Member]	'		'		'
Analysis of results by operating segment	'		'		'
Sales and other operating revenues	29,215		29,762		'
Operating Segments [Member] | Marketing and Specialties [Member]	'		'		'
Analysis of results by operating segment	'		'		'
Sales and other operating revenues	27,046		28,180		'
Intersegment Eliminations [Member] | Midstream [Member]	'		'		'
Analysis of results by operating segment	'		'		'
Sales and other operating revenues	-292		-232		'
Intersegment Eliminations [Member] | Refining [Member]	'		'		'
Analysis of results by operating segment	'		'		'
Sales and other operating revenues	-17,558		-17,857		'
Intersegment Eliminations [Member] | Marketing and Specialties [Member]	'		'		'
Analysis of results by operating segment	'		'		'
Sales and other operating revenues	-292		-278		'
Discontinued Operations [Member]	'		'		'
Analysis of results by operating segment	'		'		'
Net Income (Loss) Attributable to Phillips 66	706		15		'
Analysis of results of assets by operating segment	'		'		'
Discontinued operations	$0		'		$211
[1]	Includes excise taxes on petroleum products sales: $3,522 million, $3,258 million

Segment_Disclosures_and_Relate3

Segment Disclosures and Related Information (Narrative) (Details)	3 Months Ended
	Mar. 31, 2014
Segment Disclosures And Related Information (Textual) [Abstract]	'
Number of refineries in Refining segment	15
DCP Midstream [Member]	'
Segment Disclosures And Related Information (Textual) [Abstract]	'
Percentage of ownership interest	50.00%
CP Chem [Member]	'
Segment Disclosures And Related Information (Textual) [Abstract]	'
Percentage of ownership interest	50.00%
Excel and Jupiter Sulphur, LLC [Member]	'
Segment Disclosures And Related Information (Textual) [Abstract]	'
Number of equity investments moved from Refining segment to M&S segment	2

Income_Taxes_Narrative_Details

Income Taxes (Narrative) (Details)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Income Taxes (Textual) [Abstract]	'	'
Effective tax rate, percent	33.00%	32.00%

Condensed_Consolidating_Financ2

Condensed Consolidating Financial Information (Income Statement) (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014		Mar. 31, 2013
Revenues and Other Income	'		'
Sales and other operating revenues	$40,283	[1]	$41,211	[1]
Equity in earnings of affiliates	778		1,039
Net gain on dispositions	7		1
Other income	31		23
Total Revenues and Other Income	41,099		42,274
Cost And Expenses	'		'
Purchased crude oil and products	34,381		35,243
Operating expenses	1,090		978
Selling, general and administrative expenses	402		327
Depreciation and amortization	234		242
Impairments	1		24
Taxes other than income taxes	3,638	[1]	3,324	[1]
Accretion on discounted liabilities	6		6
Interest and debt expense	68		70
Foreign currency transaction (gains) losses	-19		2
Total Costs and Expenses	39,801		40,216
Income from continuing operations before income taxes	1,298		2,058
Provision for income taxes	426		663
Income From Continuing Operations	872		1,395
Income from discontinued operations	706	[2]	15	[2]
Net income	1,578		1,410
Less: net income attributable to noncontrolling interests	6		3
Net Income Attributable to Phillips 66	1,572		1,407
Comprehensive Income	1,618		1,102
Phillips 66 [Member]	'		'
Revenues and Other Income	'		'
Equity in earnings of affiliates	922		1,452
Net gain on dispositions	'		'
Other income	'		'
Total Revenues and Other Income	922		1,452
Cost And Expenses	'		'
Purchased crude oil and products	'		'
Operating expenses	2		'
Selling, general and administrative expenses	3		2
Depreciation and amortization	'		'
Impairments	'		'
Taxes other than income taxes	'		'
Accretion on discounted liabilities	'		'
Interest and debt expense	66		67
Foreign currency transaction (gains) losses	'		'
Total Costs and Expenses	71		69
Income from continuing operations before income taxes	851		1,383
Provision for income taxes	-25		-24
Income From Continuing Operations	876		1,407
Income from discontinued operations	696		0
Net income	1,572		1,407
Less: net income attributable to noncontrolling interests	'		'
Net Income Attributable to Phillips 66	1,572		1,407
Comprehensive Income	1,612		1,100
Phillips 66 Company [Member]	'		'
Revenues and Other Income	'		'
Equity in earnings of affiliates	846		1,139
Net gain on dispositions	'		1
Other income	22		15
Total Revenues and Other Income	28,385		29,282
Cost And Expenses	'		'
Purchased crude oil and products	24,384		24,752
Operating expenses	903		799
Selling, general and administrative expenses	286		206
Depreciation and amortization	180		183
Impairments	1		-3
Taxes other than income taxes	1,301		1,209
Accretion on discounted liabilities	5		5
Interest and debt expense	4		3
Foreign currency transaction (gains) losses	'		-1
Total Costs and Expenses	27,064		27,155
Income from continuing operations before income taxes	1,321		2,127
Provision for income taxes	399		675
Income From Continuing Operations	922		1,452
Income from discontinued operations	'		0
Net income	922		1,452
Less: net income attributable to noncontrolling interests	'		'
Net Income Attributable to Phillips 66	922		1,452
Comprehensive Income	962		1,145
All Other Subsidiaries [Member]	'		'
Revenues and Other Income	'		'
Equity in earnings of affiliates	178		158
Net gain on dispositions	7		'
Other income	9		8
Total Revenues and Other Income	17,939		18,573
Cost And Expenses	'		'
Purchased crude oil and products	14,938		15,780
Operating expenses	191		186
Selling, general and administrative expenses	138		142
Depreciation and amortization	54		59
Impairments	'		27
Taxes other than income taxes	2,337		2,115
Accretion on discounted liabilities	1		1
Interest and debt expense	5		4
Foreign currency transaction (gains) losses	19		-1
Total Costs and Expenses	17,645		18,315
Income from continuing operations before income taxes	294		258
Provision for income taxes	52		12
Income From Continuing Operations	242		246
Income from discontinued operations	10		15
Net income	252		261
Less: net income attributable to noncontrolling interests	6		3
Net Income Attributable to Phillips 66	246		258
Comprehensive Income	284		-54
Reportable Legal Entities [Member] | Phillips 66 [Member]	'		'
Revenues and Other Income	'		'
Sales and other operating revenues	'		'
Reportable Legal Entities [Member] | Phillips 66 Company [Member]	'		'
Revenues and Other Income	'		'
Sales and other operating revenues	27,239		27,637
Reportable Legal Entities [Member] | All Other Subsidiaries [Member]	'		'
Revenues and Other Income	'		'
Sales and other operating revenues	13,044		13,574
Consolidating Adjustments [Member]	'		'
Revenues and Other Income	'		'
Sales and other operating revenues	-4,979		-5,323
Equity in earnings of affiliates	-1,168		-1,710
Net gain on dispositions	'		'
Other income	'		'
Total Revenues and Other Income	-6,147		-7,033
Cost And Expenses	'		'
Purchased crude oil and products	-4,941		-5,289
Operating expenses	-6		-7
Selling, general and administrative expenses	-25		-23
Depreciation and amortization	'		'
Impairments	'		'
Taxes other than income taxes	'		'
Accretion on discounted liabilities	'		'
Interest and debt expense	-7		-4
Foreign currency transaction (gains) losses	'		'
Total Costs and Expenses	-4,979		-5,323
Income from continuing operations before income taxes	-1,168		-1,710
Provision for income taxes	'		'
Income From Continuing Operations	-1,168		-1,710
Income from discontinued operations	'		0
Net income	-1,168		-1,710
Less: net income attributable to noncontrolling interests	'		'
Net Income Attributable to Phillips 66	-1,168		-1,710
Comprehensive Income	-1,240		-1,089
Consolidating Adjustments [Member] | Phillips 66 [Member]	'		'
Revenues and Other Income	'		'
Sales and other operating revenues	'		'
Consolidating Adjustments [Member] | Phillips 66 Company [Member]	'		'
Revenues and Other Income	'		'
Sales and other operating revenues	-278		-490
Consolidating Adjustments [Member] | All Other Subsidiaries [Member]	'		'
Revenues and Other Income	'		'
Sales and other operating revenues	($4,701)		($4,833)
[1]	Includes excise taxes on petroleum products sales: $3,522 million, $3,258 million
[2]	Net of provision for income taxes on discontinued operations: $5 million, $8 million

Condensed_Consolidating_Financ3

Condensed Consolidating Financial Information (Balance Sheet) (Details) (USD $)	Mar. 31, 2014	Dec. 31, 2013	Mar. 31, 2013	Dec. 31, 2012
In Millions, unless otherwise specified
Assets [Abstract]	'	'	'	'
Cash and cash equivalents	$5,326	$5,400	$4,753	$3,474
Accounts and notes receivable	9,120	9,632	'	'
Inventories	5,908	3,354	'	'
Prepaid expenses and other current assets	705	851	'	'
Total Current Assets	21,059	19,237	'	'
Investments and long-term receivables	10,001	11,220	'	'
Net properties, plants and equipment	15,751	15,398	'	'
Goodwill	3,141	3,096	'	'
Intangibles	737	698	'	'
Other assets	158	149	'	'
Total Assets	50,847	49,798	'	'
Liabilities and Equity [Abstract]	'	'	'	'
Accounts payable	12,623	11,090	'	'
Short-term debt	40	24	'	'
Accrued income and other taxes	1,591	872	'	'
Employee benefit obligations	232	476	'	'
Other accruals	678	469	'	'
Total Current Liabilities	15,164	12,931	'	'
Long-term debt	6,177	6,131	'	'
Asset retirement obligations and accrued environmental costs	697	700	'	'
Deferred income taxes	5,692	6,125	'	'
Employee benefit obligations	793	921	'	'
Other liabilities and deferred credits	495	598	'	'
Total Liabilities	29,018	27,406	'	'
Common stock	14,346	16,291	'	'
Retained earnings	6,962	5,622	'	'
Accumulated other comprehensive income (loss)	77	37	-622	-314
Noncontrolling interests	444	442	'	'
Total Liabilities and Equity	50,847	49,798	'	'
Phillips 66 [Member]	'	'	'	'
Assets [Abstract]	'	'	'	'
Cash and cash equivalents	'	'	'	'
Accounts and notes receivable	30	9	'	'
Inventories	'	'	'	'
Prepaid expenses and other current assets	9	10	'	'
Total Current Assets	39	19	'	'
Investments and long-term receivables	33,514	33,178	'	'
Net properties, plants and equipment	'	'	'	'
Goodwill	'	'	'	'
Intangibles	'	'	'	'
Other assets	38	40	'	'
Total Assets	33,591	33,237	'	'
Liabilities and Equity [Abstract]	'	'	'	'
Accounts payable	'	1	'	'
Short-term debt	'	'	'	'
Accrued income and other taxes	'	'	'	'
Employee benefit obligations	'	'	'	'
Other accruals	99	49	'	'
Total Current Liabilities	99	50	'	'
Long-term debt	5,796	5,796	'	'
Asset retirement obligations and accrued environmental costs	'	'	'	'
Deferred income taxes	'	'	'	'
Employee benefit obligations	'	'	'	'
Other liabilities and deferred credits	6,282	5,441	'	'
Total Liabilities	12,177	11,287	'	'
Common stock	14,346	16,291	'	'
Retained earnings	6,991	5,622	'	'
Accumulated other comprehensive income (loss)	77	37	'	'
Noncontrolling interests	'	'	'	'
Total Liabilities and Equity	33,591	33,237	'	'
Phillips 66 Company [Member]	'	'	'	'
Assets [Abstract]	'	'	'	'
Cash and cash equivalents	2,096	2,162	2,836	2,410
Accounts and notes receivable	2,699	2,174	'	'
Inventories	3,414	1,962	'	'
Prepaid expenses and other current assets	389	368	'	'
Total Current Assets	8,598	6,666	'	'
Investments and long-term receivables	26,043	27,417	'	'
Net properties, plants and equipment	11,976	12,031	'	'
Goodwill	3,099	3,094	'	'
Intangibles	693	694	'	'
Other assets	112	112	'	'
Total Assets	50,521	50,014	'	'
Liabilities and Equity [Abstract]	'	'	'	'
Accounts payable	7,630	7,507	'	'
Short-term debt	18	18	'	'
Accrued income and other taxes	992	250	'	'
Employee benefit obligations	207	422	'	'
Other accruals	184	178	'	'
Total Current Liabilities	9,031	8,375	'	'
Long-term debt	148	152	'	'
Asset retirement obligations and accrued environmental costs	521	527	'	'
Deferred income taxes	4,567	5,045	'	'
Employee benefit obligations	596	724	'	'
Other liabilities and deferred credits	2,198	2,155	'	'
Total Liabilities	17,061	16,978	'	'
Common stock	25,400	25,938	'	'
Retained earnings	7,983	7,061	'	'
Accumulated other comprehensive income (loss)	77	37	'	'
Noncontrolling interests	'	'	'	'
Total Liabilities and Equity	50,521	50,014	'	'
All Other Subsidiaries [Member]	'	'	'	'
Assets [Abstract]	'	'	'	'
Cash and cash equivalents	3,230	3,238	1,917	1,064
Accounts and notes receivable	7,303	8,130	'	'
Inventories	2,494	1,392	'	'
Prepaid expenses and other current assets	307	473	'	'
Total Current Assets	13,334	13,233	'	'
Investments and long-term receivables	7,997	7,135	'	'
Net properties, plants and equipment	3,775	3,367	'	'
Goodwill	42	2	'	'
Intangibles	44	4	'	'
Other assets	12	1	'	'
Total Assets	25,204	23,742	'	'
Liabilities and Equity [Abstract]	'	'	'	'
Accounts payable	5,905	4,263	'	'
Short-term debt	22	6	'	'
Accrued income and other taxes	599	622	'	'
Employee benefit obligations	25	54	'	'
Other accruals	395	242	'	'
Total Current Liabilities	6,946	5,187	'	'
Long-term debt	233	183	'	'
Asset retirement obligations and accrued environmental costs	176	173	'	'
Deferred income taxes	1,129	1,084	'	'
Employee benefit obligations	197	197	'	'
Other liabilities and deferred credits	6,458	6,691	'	'
Total Liabilities	15,139	13,515	'	'
Common stock	8,020	8,302	'	'
Retained earnings	1,249	1,163	'	'
Accumulated other comprehensive income (loss)	352	320	'	'
Noncontrolling interests	444	442	'	'
Total Liabilities and Equity	25,204	23,742	'	'
Consolidating Adjustments [Member]	'	'	'	'
Assets [Abstract]	'	'	'	'
Cash and cash equivalents	'	'	'	'
Accounts and notes receivable	-912	-681	'	'
Inventories	'	'	'	'
Prepaid expenses and other current assets	'	'	'	'
Total Current Assets	-912	-681	'	'
Investments and long-term receivables	-57,553	-56,510	'	'
Net properties, plants and equipment	'	'	'	'
Goodwill	'	'	'	'
Intangibles	'	'	'	'
Other assets	-4	-4	'	'
Total Assets	-58,469	-57,195	'	'
Liabilities and Equity [Abstract]	'	'	'	'
Accounts payable	-912	-681	'	'
Short-term debt	'	'	'	'
Accrued income and other taxes	'	'	'	'
Employee benefit obligations	'	'	'	'
Other accruals	'	'	'	'
Total Current Liabilities	-912	-681	'	'
Long-term debt	'	'	'	'
Asset retirement obligations and accrued environmental costs	'	'	'	'
Deferred income taxes	-4	-4	'	'
Employee benefit obligations	'	'	'	'
Other liabilities and deferred credits	-14,443	-13,689	'	'
Total Liabilities	-15,359	-14,374	'	'
Common stock	-33,420	-34,240	'	'
Retained earnings	-9,261	-8,224	'	'
Accumulated other comprehensive income (loss)	-429	-357	'	'
Noncontrolling interests	'	'	'	'
Total Liabilities and Equity	($58,469)	($57,195)	'	'

Condensed_Consolidating_Financ4

Condensed Consolidating Financial Information (Condensed Statement of Cash Flows) (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Condensed Financial Statements, Captions [Line Items]	'	'
Net Cash Provided by (Used In) Operating Activities	$1,396	$2,191
Net cash provided by discontinued operations	2	22
Net Cash Provided by (Used in) Operating Activities	1,398	2,213
Capital expenditures and investments	-572	-382
Proceeds from asset dispositions	507	9
Collection of advances/loans—related parties	0	0
ProceedsFromPaymentsForLongTermAndShortTermLoansForRelatedParties	'	55
Payments for (Proceeds from) Other Investing Activities	13	0
Net cash used in continuing investing activities	-52	-318
Net cash used in discontinued operations	-34	-5
Net Cash Provided by (Used in) Investing Activities	-86	-323
Repayment of debt	-8	-3
Issuance of common stock	-20	-6
Repurchase of common stock	-640	-382
Share exchange—PSPI transaction	-450	'
Dividends paid on common stock	-229	-194
Distributions to noncontrolling interests	-4	0
Other	-4	0
Net Cash Provided by (Used in) Financing Activities	-1,355	-585
Net cash provided by (used in) discontinued operations	0	0
Net Cash Provided by (Used in) Financing Activities	-1,355	-585
Effect of Exchange Rate on Cash and Cash Equivalents	-31	-26
Net Change in Cash and Cash Equivalents	-74	1,279
Cash and cash equivalents at beginning of period	5,400	3,474
Cash and Cash Equivalents at End of Period	5,326	4,753
Phillips 66 [Member]	'	'
Condensed Financial Statements, Captions [Line Items]	'	'
Net Cash Provided by (Used In) Operating Activities	52	70
Net cash provided by discontinued operations	0	0
Net Cash Provided by (Used in) Operating Activities	52	70
Capital expenditures and investments	'	'
Proceeds from asset dispositions	'	'
Collection of advances/loans—related parties	1,291	515
ProceedsFromPaymentsForLongTermAndShortTermLoansForRelatedParties	'	0
Payments for (Proceeds from) Other Investing Activities	0	'
Net cash used in continuing investing activities	1,291	515
Net cash used in discontinued operations	'	0
Net Cash Provided by (Used in) Investing Activities	1,291	515
Repayment of debt	0	'
Issuance of common stock	-20	-6
Repurchase of common stock	-640	-382
Share exchange—PSPI transaction	-450	'
Dividends paid on common stock	-229	-194
Other	-4	-3
Net Cash Provided by (Used in) Financing Activities	-1,343	-585
Net cash provided by (used in) discontinued operations	0	0
Net Cash Provided by (Used in) Financing Activities	-1,343	-585
Effect of Exchange Rate on Cash and Cash Equivalents	'	'
Net Change in Cash and Cash Equivalents	'	'
Cash and cash equivalents at beginning of period	'	'
Cash and Cash Equivalents at End of Period	'	'
Phillips 66 Company [Member]	'	'
Condensed Financial Statements, Captions [Line Items]	'	'
Net Cash Provided by (Used In) Operating Activities	11	1,335
Net cash provided by discontinued operations	0	0
Net Cash Provided by (Used in) Operating Activities	11	1,335
Capital expenditures and investments	-841	-186
Proceeds from asset dispositions	871	0
Collection of advances/loans—related parties	-66	-723
ProceedsFromPaymentsForLongTermAndShortTermLoansForRelatedParties	'	0
Payments for (Proceeds from) Other Investing Activities	-38	'
Net cash used in continuing investing activities	-74	-909
Net cash used in discontinued operations	'	0
Net Cash Provided by (Used in) Investing Activities	-74	-909
Repayment of debt	-3	-3
Issuance of common stock	'	'
Repurchase of common stock	'	'
Dividends paid on common stock	'	'
Other	0	3
Net Cash Provided by (Used in) Financing Activities	-3	0
Net cash provided by (used in) discontinued operations	0	0
Net Cash Provided by (Used in) Financing Activities	-3	0
Effect of Exchange Rate on Cash and Cash Equivalents	'	'
Net Change in Cash and Cash Equivalents	-66	426
Cash and cash equivalents at beginning of period	2,162	2,410
Cash and Cash Equivalents at End of Period	2,096	2,836
All Other Subsidiaries [Member]	'	'
Condensed Financial Statements, Captions [Line Items]	'	'
Net Cash Provided by (Used In) Operating Activities	1,438	786
Net cash provided by discontinued operations	2	22
Net Cash Provided by (Used in) Operating Activities	1,440	808
Capital expenditures and investments	-449	-216
Proceeds from asset dispositions	36	9
Collection of advances/loans—related parties	-1,225	208
ProceedsFromPaymentsForLongTermAndShortTermLoansForRelatedParties	'	55
Payments for (Proceeds from) Other Investing Activities	51	'
Net cash used in continuing investing activities	-1,587	56
Net cash used in discontinued operations	-34	-5
Net Cash Provided by (Used in) Investing Activities	-1,621	51
Repayment of debt	-5	0
Issuance of common stock	'	'
Repurchase of common stock	'	'
Dividends paid on common stock	-93	'
Distributions to noncontrolling interests	-4	'
Other	580	20
Net Cash Provided by (Used in) Financing Activities	204	20
Net cash provided by (used in) discontinued operations	0	0
Net Cash Provided by (Used in) Financing Activities	204	20
Effect of Exchange Rate on Cash and Cash Equivalents	-31	-26
Net Change in Cash and Cash Equivalents	-8	853
Cash and cash equivalents at beginning of period	3,238	1,064
Cash and Cash Equivalents at End of Period	3,230	1,917
Consolidating Adjustments [Member]	'	'
Condensed Financial Statements, Captions [Line Items]	'	'
Net Cash Provided by (Used In) Operating Activities	-105	0
Net cash provided by discontinued operations	0	0
Net Cash Provided by (Used in) Operating Activities	-105	0
Capital expenditures and investments	718	20
Proceeds from asset dispositions	-400	'
Collection of advances/loans—related parties	0	0
ProceedsFromPaymentsForLongTermAndShortTermLoansForRelatedParties	'	0
Payments for (Proceeds from) Other Investing Activities	0	'
Net cash used in continuing investing activities	318	20
Net cash used in discontinued operations	'	0
Net Cash Provided by (Used in) Investing Activities	318	20
Repayment of debt	'	'
Issuance of common stock	'	'
Repurchase of common stock	'	'
Dividends paid on common stock	93	'
Partners' Capital Account, Distributions	-274	'
Distributions to noncontrolling interests	'	'
Other	-580	-20
Net Cash Provided by (Used in) Financing Activities	-213	-20
Net cash provided by (used in) discontinued operations	0	0
Net Cash Provided by (Used in) Financing Activities	-213	-20
Effect of Exchange Rate on Cash and Cash Equivalents	'	'
Net Change in Cash and Cash Equivalents	'	'
Cash and cash equivalents at beginning of period	'	'
Cash and Cash Equivalents at End of Period	'	'
Consolidating Adjustments [Member] | All Other Subsidiaries [Member]	'	'
Condensed Financial Statements, Captions [Line Items]	'	'
Partners' Capital Account, Distributions	($274)	'

Condensed_Consolidating_Financ5

Condensed Consolidating Financial Information (Narrative) (Details) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Condensed Financial Statements, Captions [Line Items]	'	'
Senior notes issued by Phillips 66	$5,800,000,000	'
Percentage of ownership in subsidiary	100.00%	'
Net of provision for income taxes on discontinued operations	5,000,000	8,000,000
All Other Subsidiaries [Member]	'	'
Condensed Financial Statements, Captions [Line Items]	'	'
Net of provision for income taxes on discontinued operations	$5,000,000	$8,000,000

Phillips_66_Partners_LP_Narrat

Phillips 66 Partners LP (Narrative) (Details) (USD $)	Mar. 31, 2014	Mar. 01, 2014	Dec. 31, 2013	Jul. 27, 2013	Jul. 27, 2013	Mar. 31, 2014	Mar. 31, 2014	Mar. 01, 2014	Mar. 31, 2014	Mar. 31, 2014
In Millions, except Share data, unless otherwise specified		sphere		Phillips 66 Partners LP [Member]	Phillips 66 Partners LP [Member]	Noncontrolling Interest [Member]	Phillips 66 Partners LP [Member]	Phillips 66 Partners LP [Member]	Common Units [Member]	General Partner Units [Member]
						Phillips 66 Partners LP [Member]			Phillips 66 Partners LP [Member]
Subsidiary or Equity Method Investee [Line Items]	'	'	'	'	'	'	'	'	'	'
Total consideration for contributed assets	'	'	'	'	'	'	'	$700	'	'
Cash received	'	'	'	'	'	'	'	400	'	'
Units received	'	'	'	'	'	'	'	'	3,530,595	72,053
Notes receivable received	'	'	'	'	'	'	160	'	'	'
Number of storage spheres	'	2	'	'	'	'	'	'	'	'
Limited partnership interest in Phillips 66 Partners, percentage	'	'	'	73.00%	'	'	'	'	'	'
General partnership interest in Phillips 66 Partners, percentage	'	'	'	2.00%	'	'	'	'	'	'
Limited partner interest in Phillips 66 Partners owned by public, percentage	'	'	'	'	25.00%	'	'	'	'	'
Public's ownership interest in Phillips 66 Partners reflected as a noncontrolling interest	$444	'	$442	'	'	$409	'	'	'	'