Phillips 66 Partners (PSXP) 10-K 17 Feb 17 2016 FY Annual report Financial data

Document and Entity Information

Document and Entity Information - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Jun. 30, 2016
Document and Entity Information [Abstract]
Entity Registrant Name	Phillips 66 Partners LP
Entity Central Index Key	1,572,910
Trading Symbol	PSXP
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Document Type	10-K
Document Period End Date	Dec. 31, 2016
Document Fiscal Year Focus	2,016
Document Fiscal Period Focus	FY
Amendment Flag	false
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Public Float		$ 2,057
Entity Common Units, Units Outstanding (in shares)	107,181,926

Consolidated Statement of Incom

Consolidated Statement of Income - USD ($) shares in Thousands, $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015		Dec. 31, 2014
Revenues and Other Income
Operating revenues—related parties	$ 727	$ 582	[1]	$ 531	[1]
Operating revenues—third parties	31	30	[1]	24	[1]
Equity in earnings of affiliates	114	77	[1]	0	[1]
Other income	1	6	[1]	0	[1]
Total revenues and other income	873	695	[1]	555	[1]
Costs and Expenses
Operating and maintenance expenses	216	203	[1]	184	[1]
Depreciation	96	61	[1],[2]	46	[1],[2]
General and administrative expenses	65	63	[1]	57	[1]
Taxes other than income taxes	33	27	[1]	16	[1]
Interest and debt expense	52	34	[1]	5	[1]
Other expenses	1	1	[1]	1	[1]
Total costs and expenses	463	389	[1]	309	[1]
Income before income taxes	410	306	[1]	246	[1]
Provision for income taxes	2	0	[1]	1	[1]
Net income	408	306	[1],[3]	245	[1],[3]
Less: Net income attributable to Predecessors	107	112	[1]	129	[1]
Net income attributable to the Partnership	301	194	[1]	116	[1]
Less: General partner’s interest in net income attributable to the Partnership	92	41	[1]	8	[1]
Limited partners’ interest in net income attributable to the Partnership	$ 209	$ 153	[1]	$ 108	[1]
Net Income Attributable to the Partnership Per Limited Partner Unit—Basic and Diluted (dollars)
Cash Distributions Paid Per Limited Partner Unit (in usd per share)	$ 1.9750	$ 1.5380	[1]	$ 1.1176	[1]
Common Units
Net Income Attributable to the Partnership Per Limited Partner Unit—Basic and Diluted (dollars)
Basic and Diluted, per unit (in usd per share)	$ 2.20	$ 2.02	[1]	$ 1.48	[1]
Common Units | Public
Costs and Expenses
Net income attributable to the Partnership	$ 79	$ 45		$ 28
Average Limited Partner Units Outstanding—Basic and Diluted (thousands)
Basic and Diluted, units (in shares)	34,804	23,376	[1]	18,889	[1]
Common Units | Non-public | Phillips 66
Costs and Expenses
Net income attributable to the Partnership	$ 130	$ 93		$ 29
Average Limited Partner Units Outstanding—Basic and Diluted (thousands)
Basic and Diluted, units (in shares)	60,436	44,797	[1]	19,380	[1]
Subordinated Units | Non-public | Phillips 66
Costs and Expenses
Net income attributable to the Partnership	$ 0	$ 15		$ 51
Net Income Attributable to the Partnership Per Limited Partner Unit—Basic and Diluted (dollars)
Basic and Diluted, per unit (in usd per share)	$ 0	$ 1.24	[1]	$ 1.45	[1]
Average Limited Partner Units Outstanding—Basic and Diluted (thousands)
Basic and Diluted, units (in shares)	0	12,736	[1]	35,217	[1]
[1]	Prior-period financial information has been retrospectively adjusted for acquisitions of businesses under common control.
[2]	Prior-period financial information has been retrospectively adjusted for acquisitions of businesses under common control.
[3]	*Prior-period financial information has been retrospectively adjusted for acquisitions of businesses under common contro

Consolidated Statement of Compr

Consolidated Statement of Comprehensive Income - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	[1]	Dec. 31, 2014	[1]
Statement of Comprehensive Income [Abstract]
Net Income	$ 408	$ 306	[2]	$ 245	[2]
Defined benefit plans
Plans sponsored by equity affiliates, net of tax	1	0		0
Other comprehensive income	1	0		0
Comprehensive Income	$ 409	$ 306		$ 245
[1]	*Prior-period financial information has been retrospectively adjusted for acquisitions of businesses under common contro
[2]	Prior-period financial information has been retrospectively adjusted for acquisitions of businesses under common control.

Consolidated Balance Sheet

Consolidated Balance Sheet - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Assets
Cash and cash equivalents	$ 2	$ 50	[1]
Accounts receivable—related parties	76	22	[1]
Accounts receivable—third parties	7	7	[1]
Materials and supplies	11	8	[1]
Prepaid expenses	4	2	[1]
Other current assets	0	2	[1]
Total Current Assets	100	91	[1]
Equity investments	1,142	945	[1]
Net properties, plants and equipment	2,675	2,437	[1]
Goodwill	185	182	[1]
Deferred rentals—related parties	5	6	[1]
Other assets	2	1	[1]
Total Assets	4,109	3,662	[1]
Liabilities
Accounts payable—related parties	12	4	[1]
Accounts payable—third parties	31	82	[1]
Payroll and benefits payable	0	3	[1]
Accrued property and other taxes	10	14	[1]
Accrued interest	26	22	[1]
Short-term debt	15	0	[1]
Deferred revenues—related parties	14	4	[1]
Other current liabilities	3	4	[1]
Total Current Liabilities	111	133	[1]
Notes payable—related party	0	964	[1]
Long-term debt	2,396	1,091	[1]
Asset retirement obligations	9	11	[1]
Accrued environmental costs	2	4	[1]
Deferred income taxes	2	1	[1]
Deferred revenues—related parties—long-term	23	14	[1]
Total Liabilities	2,543	2,218	[1]
Equity
General partner—Phillips 66 (2016—2,187,386 units issued and outstanding; 2015—1,683,425 units issued and outstanding)	(704)	(650)	[1]
Accumulated other comprehensive loss	(1)	(2)	[1]
Total Equity	1,566	1,444	[1]
Total Liabilities and Equity	4,109	3,662	[1]
Public | Common Units
Equity
Unitholders	1,795	809	[1]
Total Equity	1,795	809
Non-public | Common Units | Phillips 66
Equity
Unitholders	476	233	[1]
Total Equity	476	233
Phillips 66
Equity
Net investment—Predecessors	$ 0	$ 1,054	[1]
[1]	Prior-period financial information has been retrospectively adjusted for acquisitions of businesses under common control.

Consolidated Balance Sheet (Par

Consolidated Balance Sheet (Parenthetical) - shares	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
General partner—Phillips 66 units issued (in shares)	2,187,386	1,683,425	1,531,518
General partner—Phillips 66 units outstanding (in shares)	2,187,386	1,683,425	1,531,518
Common Units | Public
Units issued (in shares)	43,134,902	24,138,750	18,888,750
Units outstanding (in shares)	43,134,902	24,138,750	18,888,750
Common Units | Non-public | Phillips 66
Units issued (in shares)	64,047,024	58,349,042	20,938,948
Units outstanding (in shares)	64,047,024	58,349,042	20,938,948

Consolidated Statement of Cash

Consolidated Statement of Cash Flows - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2016	Dec. 31, 2015		Dec. 31, 2014
Cash Flows From Operating Activities
Net income		$ 408	$ 306	[1],[2]	$ 245	[1],[2]
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation		96	61	[2],[3]	46	[2],[3]
Deferred rentals		1	0	[3]	0	[3]
Deferred taxes		0	0	[3]	0	[3]
Accrued environmental costs		1	1	[3]
Unfunded equity losses		1	0	[3]	0	[3]
Deferred revenues		9	11	[3]	2	[3]
Other		4	1	[3]	0
Working capital adjustments
Decrease (increase) in accounts receivable		(58)	1	[3]	(14)	[3]
Decrease (increase) in materials and supplies		(2)	(2)	[3]	0	[3]
Decrease (increase) in prepaid expenses and other current assets		(2)	(2)	[3]	0	[3]
Increase (decrease) in accounts payable		19	(9)	[3]	12	[3]
Increase (decrease) in accrued interest		4	13	[3]	2	[3]
Increase (decrease) in deferred revenues		10	4	[3]	1	[3]
Increase (decrease) in other accruals		1	7	[3]	2	[3]
Net Cash Provided by Operating Activities		492	392	[3]	296	[3]
Cash Flows From Investing Activities
Acquisition		(990)
Cash capital expenditures and investments		(584)	(948)	[3]	(659)	[3]
Return of investment from equity affiliates		16	12	[3]	0	[3]
Net Cash Used in Investing Activities		(1,558)	(1,670)	[3]	(825)	[3]
Cash Flows From Financing Activities
Net contributions from (to) Phillips 66 to (from) Predecessors		45	(46)	[3]	94	[3]
Project prefunding from Phillips 66	[3]		0		2
Acquisition of noncontrolling interest in Sweeny Frac LLC		(656)	0	[3]	0	[3]
Issuance of debt		2,118	1,781	[3]	380	[3]
Repayment of debt		(1,096)	(499)	[3]	(10)	[3]
Issuance of common units		983	396	[3]	0	[3]
Offering costs		(12)	(12)	[3]	0	[3]
Debt issuance costs		(10)	(10)	[3]	(1)	[3]
Distributions to General Partner associated with acquisitions		(119)	(146)
Other cash contributions from Phillips 66		24	0	[3]	4	[3]
Net Cash Provided by Financing Activities		1,018	1,311	[3]	121	[3]
Net Change in Cash and Cash Equivalents		(48)	33	[3]	(408)	[3]
Cash and cash equivalents at beginning of period	[3]	50	17		425
Cash and Cash Equivalents at End of Period		2	50	[3]	17	[3]
General Partner
Cash Flows From Financing Activities
Distributions to General Partner associated with acquisitions	[4]	(119)	(146)	[3]	(262)	[3]
Quarterly distributions to common unitholders/General Partner		(76)	(30)	[3]	(4)	[3]
Public | Common Units
Cash Flows From Financing Activities
Quarterly distributions to common unitholders/General Partner		(64)	(35)	[3]	(21)	[3]
Non-public | Common Units
Cash Flows From Financing Activities
Quarterly distributions to common unitholders/General Partner		(119)	(63)		(22)
Non-public | Subordinated Units
Cash Flows From Financing Activities
Quarterly distributions to common unitholders/General Partner			(25)		(39)
Phillips 66 | Non-public | Common Units
Cash Flows From Financing Activities
Quarterly distributions to common unitholders/General Partner		(119)	(63)	[3]	(22)	[3]
Phillips 66 | Non-public | Subordinated Units
Cash Flows From Financing Activities
Quarterly distributions to common unitholders/General Partner		0	(25)	[3]	(39)	[3]
Gold Line/Medford acquisition
Cash Flows From Investing Activities
Acquisition		0	0	[3]	(138)	[3]
Bayway Ferndale Cross-Channel acquisition
Cash Flows From Investing Activities
Acquisition		0	0	[3]	(28)	[3]
Eagle Acquisition
Cash Flows From Investing Activities
Acquisition		(990)	0	[3]	0	[3]
Sand Hills/Southern Hills/ Explorer
Cash Flows From Investing Activities
Acquisition		$ 0	$ (734)	[3]	$ 0	[3]
[1]	*Prior-period financial information has been retrospectively adjusted for acquisitions of businesses under common contro
[2]	Prior-period financial information has been retrospectively adjusted for acquisitions of businesses under common control.
[3]	Prior-period financial information has been retrospectively adjusted for acquisitions of businesses under common control.
[4]	See Note 18— Cash Flow Information

Consolidated Statement of Chang

Consolidated Statement of Changes in Equity - USD ($) $ in Millions	Total		General Partner	Common UnitsPublic	Common UnitsNon-publicPhillips 66	Subordinated UnitsNon-publicPhillips 66	Net Investment— Predecessors	[1]	AOCI Attributable to Parent
Begining Balance at Dec. 31, 2013	$ 1,598		$ 11	$ 408	$ 49	$ 105	$ 1,025		$ 0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income attributable to Predecessors	129	[2]					129
Net contributions from (to) Phillips 66—Predecessors	109						109
Contributions from Phillips 66 prior to acquisitions	4						4
Project prefunding from Phillips 66	2						2
Allocation of net investment—Predecessors and deemed net distributions to General Partner	(817)		(536)				(281)
Issuance of units associated with acquisitions	1				1
Net income attributable to the Partnership	116	[2]	8	28	29	51
Quarterly cash distributions to unitholders and General Partner	(86)		(4)	(21)	(22)	(39)
Other contributions from Phillips 66	4		4
Ending Balance at Dec. 31, 2014	$ 1,060		$ (517)	$ 415	$ 57	$ 117	988
Beginning balance (in shares) at Dec. 31, 2013	71,871,657		1,437,433	18,888,750	16,328,362	35,217,112
Units Outstanding
Units issued associated with acquisitions (in shares)	4,704,221		94,085		4,610,136
Ending balance (in shares) at Dec. 31, 2014	76,575,878		1,531,518	18,888,750	20,938,498	35,217,112
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income attributable to Predecessors	$ 112	[2]					112
Net contributions from (to) Phillips 66—Predecessors	(46)						(46)
Issuance of common units	384			$ 384
Conversion of subordinated units					$ 107	$ (107)
Deemed net distributions to General Partner associated with acquisitions	(145)		$ (150)		5
Issuance of units associated with acquisitions	35		1		34
Net income attributable to the Partnership	194	[2]	41	45	93	15
Other comprehensive loss	(2)								(2)
Quarterly cash distributions to unitholders and General Partner	(153)		(30)	(35)	(63)	$ (25)
Other contributions from Phillips 66	5		5
Ending Balance at Dec. 31, 2015	$ 1,444	[3]	$ (650)	$ 809	$ 233		1,054		(2)
Units Outstanding
Units issued associated with the public offering (in shares)	5,250,000			5,250,000
Units issued associated with acquisitions (in shares)	2,345,339		151,907		2,193,432
Subordinated unit conversion, (in shares)					35,217,112	(35,217,112)
Ending balance (in shares) at Dec. 31, 2015	84,171,217		1,683,425	24,138,750	58,349,042
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income attributable to Predecessors	$ 107						107
Net contributions from (to) Phillips 66—Predecessors	95						95
Allocation of net investment—Predecessors and deemed net distributions to General Partner	0		$ 34		$ 232		(266)
Allocation of net investment—Predecessors and deemed net distributions to General Partner	(1,109)		(119)				$ (990)
Issuance of common units	971			$ 971
Net income attributable to the Partnership	301		92	79	130	$ 0
Other comprehensive loss	1								1
Quarterly cash distributions to unitholders and General Partner	(259)		(76)	(64)	(119)	$ 0
Other contributions from Phillips 66	15		15
Ending Balance at Dec. 31, 2016	$ 1,566		$ (704)	$ 1,795	$ 476				$ (1)
Units Outstanding
Units issued associated with the public offering (in shares)	18,996,152			18,996,152
Units issued associated with acquisitions (in shares)	6,201,943		503,961		5,697,982
Ending balance (in shares) at Dec. 31, 2016	109,369,312		2,187,386	43,134,902	64,047,024
[1]	Prior-period financial information has been retrospectively adjusted for acquisitions of businesses under common control.
[2]	Prior-period financial information has been retrospectively adjusted for acquisitions of businesses under common control.
[3]	Prior-period financial information has been retrospectively adjusted for acquisitions of businesses under common control.

Business and Basis of Presentat

Business and Basis of Presentation	12 Months Ended
	Dec. 31, 2016
Business and Basis of Presentation [Abstract]
Business and Basis of Presentation	Business and Basis of Presentation Unless otherwise stated or the context otherwise indicates, all references to “Phillips 66 Partners,” “the Partnership,” “us,” “our,” “we,” or similar expressions refer to Phillips 66 Partners LP, including its consolidated subsidiaries. References to Phillips 66 may refer to Phillips 66 and/or its subsidiaries, depending on the context. Description of the Business We are a Delaware limited partnership formed in 2013 by Phillips 66 Company and Phillips 66 Partners GP LLC (our General Partner), both wholly owned subsidiaries of Phillips 66. On August 1, 2015, Phillips 66 Company transferred all of its limited partner interests in us and its 100 percent interest in our General Partner to its wholly owned subsidiary, Phillips 66 Project Development Inc. (Phillips 66 PDI). We are a growth-oriented master limited partnership formed to own, operate, develop and acquire primarily fee-based crude oil, refined petroleum products and natural gas liquids (NGL) pipelines, terminals and other midstream assets. Our assets consist of crude oil, refined petroleum products and NGL transportation, terminaling and storage systems, as well as an NGL fractionator. We conduct our operations through both wholly owned and joint venture operations. The majority of our wholly owned assets are associated with, and integral to the operation of, nine of Phillips 66’s owned or joint venture refineries. We generate revenue primarily by providing fee-based transportation, terminaling, storage and NGL fractionation services to Phillips 66 and other customers. Our equity affiliates generate revenue primarily from transporting and terminaling NGL, refined petroleum products and crude oil. Since we do not own any of the NGL, crude oil and refined petroleum products we handle and do not engage in the trading of NGL, crude oil and refined petroleum products, we have limited direct exposure to risks associated with fluctuating commodity prices, although these risks indirectly influence our activities and results of operations over the long term. Basis of Presentation We have acquired assets from Phillips 66 that were considered transfers of businesses between entities under common control. This required the transactions to be accounted for as if the transfers had occurred at the beginning of the transfer period, with prior periods retrospectively adjusted to furnish comparative information. Accordingly, the accompanying financial statements and related notes have been retrospectively adjusted to include the historical results and financial position of these acquired businesses prior to the effective date of each acquisition. We refer to these pre-acquisition operations as those of our “Predecessors.” The combined financial statements of our Predecessors were derived from the accounting records of Phillips 66 and reflect the combined historical results of operations, financial position and cash flows of our Predecessors as if such businesses had been combined for all periods presented. All intercompany transactions and accounts within our Predecessors have been eliminated. The assets and liabilities of our Predecessors in these financial statements have been reflected on a historical cost basis because the transfer of the Predecessors to us took place within the Phillips 66 consolidated group. The consolidated statement of income also includes expense allocations for certain functions performed by Phillips 66, including allocations of general corporate expenses related to executive oversight, accounting, treasury, tax, legal, information technology and procurement; and operational support services such as engineering and logistics. These allocations were based primarily on relative values of properties, plants and equipment and equity-method investments, or number of terminals and pipeline miles, and secondarily on activity-based cost allocations. Our management believes the assumptions underlying the allocation of expenses from Phillips 66 are reasonable. Nevertheless, the financial results of our Predecessors may not include all of the actual expenses that would have been incurred had our Predecessors been a stand-alone publicly traded partnership during the periods presented.

Summary of Significant Accounti

Summary of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2016
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Summary of Significant Accounting Policies Consolidation Principles and Investments Our consolidated financial statements include the accounts of majority-owned subsidiaries. All intercompany transactions and accounts have been eliminated. The equity method is used to account for investments in affiliates in which we have the ability to exert significant influence over the affiliates’ operating and financial policies. Undivided interests in pipelines are consolidated on a proportionate basis. Net Investment In the consolidated balance sheet, “Net investment” represents Phillips 66’s historical investment in us, our accumulated net earnings after taxes, and the net effect of transactions with, and allocations from, Phillips 66. Use of Estimates The preparation of financial statements in conformity with generally accepted accounting principles (GAAP) in the United States requires management to make estimates and assumptions that affect the reported amounts of assets, liabilities, revenue and expenses, as well as the disclosures of contingent assets and liabilities. Actual results could differ from these estimates. Common Control Transactions Businesses acquired from Phillips 66 and its subsidiaries are accounted for as common control transactions whereby the net assets acquired are combined with ours at their carrying value. Any difference between carrying value and recognized consideration is treated as a capital transaction. To the extent that such transactions require prior periods to be recast, historical net equity amounts prior to the transaction date are reflected in “Net Investment.” Cash consideration up to the carrying value of net assets acquired is presented as an investing activity in our consolidated statement of cash flows. Cash consideration in excess of the carrying value of net assets acquired is presented as a financing activity in our consolidated statement of cash flows. Revenue Recognition Revenue is recognized for NGL, crude oil and refined petroleum product pipeline transportation based on the delivery of actual volumes transported at contractual tariff rates. Revenue is recognized for NGL, crude oil and refined petroleum product terminaling, storage, and fractionation services as performed based on contractual rates related to throughput volumes, capacity or cost-plus-margin arrangements. A significant portion of our revenue is derived from Phillips 66. Transportation contracts that are operating leases and include rentals with fixed escalation are recognized on a straight-line basis over the lease term. Any difference between the transportation fee recognized under the straight-line method and the transportation fee received in cash is deferred to the consolidated balance sheet as “Deferred rentals-related parties.” If the underlying transportation contract is amended to eliminate fixed escalation, the balance of deferred rentals is amortized over the remaining life of the contract. Certain transportation services agreements, terminal services agreements and a fractionation service agreement with Phillips 66 are considered operating leases under GAAP. Revenues from these agreements are recorded within “Operating revenues—related parties” on our combined statement of income. See Note 14—Leases for additional information on these operating leases and Note 20—Related Party Transactions for additional information on our agreements with Phillips 66. Billings to Phillips 66 for shortfall volumes under its quarterly minimum volume commitments are recorded as “Deferred revenues—related parties” in our combined balance sheet, as Phillips 66 has the right to make up the shortfall volumes in the following four quarters. The deferred revenue will be recognized at the earlier of when shortfall volumes are made up or when the make-up rights contractually expire. At the time the Clemens Caverns commenced operations, the caverns had not reached total planned working capacity contracted under the storage agreement. During the build-out of the remaining capacity, a portion of the monthly storage fees is deferred. The deferred revenue is recognized over the remaining term of the agreement as additional storage capacity is placed into service. Cash Equivalents Cash equivalents are highly liquid, short-term investments that are readily convertible to known amounts of cash and will mature within 90 days or less from the date of acquisition. We carry these at cost plus accrued interest, which approximates fair value. Imbalances We do not purchase or produce NGL, crude oil or refined petroleum product inventories. We experience imbalances as a result of variances in meter readings and in other measurement methods, and volume fluctuations within our NGL, crude oil and refined products systems due to pressure and temperature changes. Certain of our transportation contracts provide for the shipper to pay a contractual loss allowance, which is valued using quoted market prices of the applicable commodity being shipped. These contractual loss allowances, which are received from the shipper irrespective of, and calculated independently from, actual volumetric gains or losses, are recorded as revenue. Any actual volumetric gains or losses are valued using quoted market prices of the applicable commodities and are recorded as decreases or increases to operating and maintenance expenses, respectively. Fair Value Measurements We measure assets and liabilities requiring fair value presentation or disclosure using an exit price (i.e., the price that would be received to sell an asset or paid to transfer a liability) and disclose such amounts according to the quality of valuation inputs under the following hierarchy: Level 1: Quoted prices in an active market for identical assets or liabilities. Level 2: Observable inputs other than quoted prices included within Level 1 for the asset or liability, either directly or indirectly through market-corroborated inputs. Level 3: Unobservable inputs that are significant to the fair value of assets or liabilities. We classify the fair value of an asset or liability based on the lowest level of input significant to its measurement. A fair value 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. Asset and liability fair values initially reported as Level 2 will be subsequently reported as Level 3 if corroborating market data becomes unavailable. The carrying amounts of our trade receivables and payables approximate fair values. Nonrecurring Fair Value Measurements Fair value measurements are applied with respect to our nonfinancial assets and liabilities measured on a nonrecurring basis, which consist primarily of asset retirement obligations. Nonrecurring fair value measurements are also applied, when applicable, to determine the fair value of our long-lived assets. Properties, Plants and Equipment (PP&E) PP&E is stated at cost. Costs of maintenance and repairs, which are not significant improvements, are expensed when incurred. Depreciation of PP&E is determined by the individual-unit-straight-line method or the group-straight-line method (for those individual units that are highly integrated with other units). Capitalized Interest Interest from external borrowings is capitalized on major projects with an expected construction period of six months or longer. Capitalized interest is added to the cost of the underlying asset’s PP&E and is amortized over the useful life of the asset. Major Maintenance Activities Costs for planned integrity management projects are expensed in the period incurred. These types of costs include inspection services, contractor repair services, materials and supplies, equipment rentals and labor costs. Impairment of PP&E PP&E used in operations are assessed for impairment whenever changes in facts and circumstances indicate a possible significant deterioration in the future cash flows expected to be generated by an asset group. If, upon review, the sum of the undiscounted pretax cash flows is less than the carrying value of the asset group, including applicable liabilities, then the carrying value is written down to estimated fair value and reported as impairments in the period in which the determination of the impairment is made. Individual assets are grouped for impairment purposes at the lowest level for which identifiable cash flows are largely independent of the cash flows of other groups of assets—generally at the pipeline system, terminal level or fractionation system. Since there usually is a lack of quoted market prices for our long-lived assets, the fair value of potentially impaired assets is typically determined based on the present values of expected future cash flows using discount rates believed to be consistent with those used by principal market participants or based on a multiple of operating cash flow validated with historical market transactions of similar assets where possible. The expected future cash flows used for impairment reviews and related fair value calculations are based on estimated future throughputs, tariffs and fees, operating costs and capital project decisions, considering all available evidence at the date of review. Goodwill Goodwill represents the excess of the purchase price over the estimated fair value of the net assets acquired in the acquisition of a business. Goodwill is not amortized, but rather is tested for impairment annually and when events or changes in circumstances indicate that the fair value of the reporting unit with goodwill has been reduced below carrying value. The majority of our goodwill was received through acquisitions from Phillips 66. In these common control transactions, the net assets acquired are recorded at Phillips 66’s historical carrying value, including any associated goodwill. We have one reporting unit with a goodwill balance for testing goodwill for impairment. Asset Retirement Obligations and Environmental Costs Fair values of legal obligations to abandon or remove long-lived assets are recorded in the period in which the obligation is incurred. When the liability is initially recorded, we capitalize this cost by increasing the carrying amount of the related PP&E. Over time, the liability is increased for the change in its present value, and the capitalized cost in PP&E is depreciated over the useful life of the related asset. Our estimate may change after initial recognition, in which case we record an adjustment to the liability and PP&E. Environmental expenditures are expensed or capitalized, depending upon their future economic benefit. Expenditures relating to an existing condition caused by past operations, and those having no future economic benefit, are expensed. Liabilities for environmental expenditures are recorded on an undiscounted basis (unless acquired in a purchase business combination) when environmental assessments or cleanups are probable and the costs can be reasonably estimated. Impairment of Investments in Nonconsolidated Entities Investments in nonconsolidated entities are assessed for impairment whenever changes in the facts and circumstances indicate a loss in value has occurred. When indicators exist, the fair value is estimated and compared to the investment carrying value. If any impairment is judgmentally determined to be other than temporary, the carrying value of the investment is written down to fair value. The fair value of the impaired investment is based on quoted market prices, if available, or upon the present value of expected future cash flows using discount rates and other assumptions believed to be consistent with those used by principal market participants and a market analysis of comparable assets, if appropriate. Income Taxes We follow the asset and liability method of accounting for income taxes. Under this method, deferred income taxes are recognized for the tax consequences of temporary differences between the financial statement carrying amounts and the tax basis of the assets and liabilities. Our operations are treated as a partnership for federal and state income tax purposes, with each partner being separately taxed on its share of the taxable income. Therefore, we have excluded income taxes from these consolidated financial statements, except for the income tax provision resulting from state laws that apply to entities organized as partnerships. Our tax provision is computed as if we were a stand-alone tax paying entity. Any interest related to income taxes would be included in interest and debt expense, and penalties would be included in operating and maintenance expenses.

Changes in Accounting Principle

Changes in Accounting Principles	12 Months Ended
	Dec. 31, 2016
Changes in Accounting Principles [Abstract]
Changes in Accounting Principles	Changes in Accounting Principles Effective January 1, 2016, we early adopted the Financial Accounting Standards Board (FASB) Accounting Standards Update (ASU) No. 2015-17, “Income Taxes (Topic 740): Balance Sheet Classification of Deferred Taxes.” The new update simplified the presentation of deferred income taxes and required deferred tax liabilities and assets be classified as noncurrent in a classified statement of financial position. The classification was made at the taxpaying component level of an entity, after reflecting any offset of deferred tax liabilities, deferred tax assets and any related valuation allowances. We applied the amendments prospectively to all deferred tax liabilities and assets. In June 2014, the FASB issued ASU No. 2014-10, “Development Stage Entities (Topic 915): Elimination of Certain Financial Reporting Requirements, Including an Amendment to Variable Interest Entities (VIE) Guidance in Topic 810, Consolidation.” The new standard removed the definition of a development stage entity from the Master Glossary of the Accounting Standard Codification (ASC) and the related financial reporting requirements specific to development stage entities. This ASU is intended to reduce cost and complexity of financial reporting for entities that have not commenced planned principal operations. For financial reporting requirements other than the VIE guidance in ASC Topic 810, “Consolidation,” ASU No. 2014-10 was effective for annual and quarterly reporting periods of public entities beginning after December 15, 2014. For the financial reporting requirements related to VIEs in ASC Topic 810, “Consolidation,” ASU No. 2014-10 was effective for annual and quarterly reporting periods of public entities beginning after December 15, 2015. We adopted the provisions of this ASU related to the financial reporting requirements other than the VIE guidance effective January 1, 2015. We adopted the remaining provisions effective January 1, 2016.

Acquisitions

Acquisitions	12 Months Ended
	Dec. 31, 2016
Business Combinations [Abstract]
Acquisitions	Acquisitions 2016 Acquisitions During 2016, we and a co-venturer formed STACK Pipeline LLC (STACK Pipeline), a 50 / 50 joint venture. In addition, we acquired an additional 2.48 percent interest in Explorer Pipeline Company (Explorer). See Note 5—Equity Investments for information regarding our equity investments. River Parish Acquisition On November 17, 2016, we acquired a third party’s NGL logistics system in southeast Louisiana. We financed this transaction with cash and borrowings under our revolving credit facility. The acquired system includes a pipeline and storage caverns connecting multiple third-party fractionators, a petrochemical plant and several refineries, including the Phillips 66 Alliance Refinery. As of December 31, 2016, we provisionally recorded $183 million of PP&E. Fractionator Acquisitions Initial Fractionator Acquisition. On February 17, 2016, we entered into a Contribution, Conveyance and Assumption Agreement (CCAA) with subsidiaries of Phillips 66 to acquire a 25 percent controlling interest in Phillips 66 Sweeny Frac LLC (Sweeny Frac LLC) for total consideration of $236 million (the Initial Fractionator Acquisition). Total consideration consisted of the assumption of a $212 million note payable to a subsidiary of Phillips 66 and the issuance of 412,823 common units to Phillips 66 PDI and 8,425 general partner units to our General Partner to maintain its 2 percent general partner interest. The Initial Fractionator Acquisition closed on March 1, 2016. Total transaction costs of $1 million were expensed as incurred. Subsequent Fractionator Acquisition. On May 4, 2016, we entered into a CCAA with subsidiaries of Phillips 66 to acquire the remaining 75 percent interest in Sweeny Frac LLC and 100 percent of the Standish Pipeline for total consideration of $775 million (the Subsequent Fractionator Acquisition). Total consideration consisted of the assumption of $675 million of notes payable to a subsidiary of Phillips 66 and the issuance of 1,400,922 common units to Phillips 66 PDI and 286,753 general partner units to our General Partner to maintain its 2 percent general partner interest in us after also taking into account the public offering we completed on May 10, 2016. The Subsequent Fractionator Acquisition closed on May 10, 2016. Total transaction costs of $1 million were expensed as incurred. Acquired Assets. Through the Initial Fractionator Acquisition and Subsequent Fractionator Acquisition (collectively, the Fractionator Acquisitions), we acquired the following assets (the Acquired Fractionator Assets): • Sweeny NGL Fractionator. The newly constructed NGL fractionator is located within Phillips 66's Sweeny refinery complex in Old Ocean, Texas. The NGL fractionator uses distillation to process a raw (Y-grade) NGL stream into its individual purity components, such as propane and butane. • Clemens Caverns. The newly constructed underground salt dome NGL storage facility is located near Brazoria, Texas. The Clemens Caverns facilitate handling of Y-grade NGL for input into the Sweeny NGL Fractionator, as well as storage of purity NGL products produced by the fractionator. • Standish Pipeline. The refined petroleum product pipeline extends from Phillips 66’s refinery in Ponca City, Oklahoma, to our terminal in Wichita, Kansas. Construction activities on the Sweeny NGL Fractionator and Clemens Caverns began in 2013. Commercial operations at the Sweeny NGL Fractionator commenced in December 2015, and commercial operations at the Clemens Caverns commenced in September 2015. Eagle Acquisition On October 11, 2016, we entered into a CCAA with subsidiaries of Phillips 66 for us to acquire certain pipeline and terminal assets supporting four Phillips 66-operated refineries (the Eagle Acquisition). The Eagle Acquisition closed on October 14, 2016. We paid Phillips 66 total consideration of $1,305 million , consisting of $1,109 million in cash and the issuance of 3,884,237 common units to Phillips 66 PDI and 208,783 general partner units to our General Partner to allow it to maintain its 2 percent general partner ownership in us. Acquired Assets. Through the Eagle Acquisition, we acquired the following assets (the Acquired Eagle Assets): • Ponca Crude System : A crude pipeline and terminal system that provides crude supply for Phillips 66’s Ponca City Refinery. • Ponca Products System : A refined products and NGL pipeline and terminal system that provides product takeaway transportation services for Phillips 66’s Ponca City Refinery. • Billings Crude System : A crude pipeline and terminal system that provides crude supply for Phillips 66’s Billings Refinery. • Billings Products System : A refined products pipeline and terminal system that provides product takeaway transportation services for Phillips 66’s Billings Refinery. • Bayway Products System : A refined products and NGL terminal system that provides storage services for Phillips 66’s Bayway Refinery. • Borger Crude System: A crude pipeline and terminal system that provides crude supply for the Phillips 66-operated and jointly owned Borger Refinery. • Borger Refinery Products System : A refined products pipeline and terminal system that provides product takeaway transportation services for the Borger Refinery. In connection with the Fractionator Acquisitions and the Eagle Acquisition, we entered into commercial agreements with Phillips 66 and amended the omnibus and operational services agreements with Phillips 66. See Note 20— Related Party Transactions for additional information on our commercial and support agreements with Phillips 66. Common Control Transactions The Fractionator Acquisitions and the Eagle Acquisition (collectively, the Acquisitions) were considered transfers of businesses between entities under common control, and therefore the related acquired assets were transferred at historical carrying value. The aggregate net book value of the Acquired Fractionator Assets and the Acquired Eagle Assets (collectively, the Acquired Assets), at the time of acquisition, was $1,154 million and $990 million , respectively. Because the Acquisitions were common control transactions in which we acquired businesses, our historical financial statements have been retrospectively adjusted to reflect the results of operations, financial position, and cash flows of the Acquired Assets as if we owned the Acquired Assets for all periods presented. The following tables present our results of operations and financial position giving effect to the Acquisitions. In the 2016 consolidated statements of income and cash flows tables, the first column includes the consolidated results of the Acquired Assets after the effective date of each acquisition. In the 2015 and 2014 consolidated statements of income and cash flows table, as well as the 2015 consolidated balance sheet table, the first column represents our historical financial information prior to the retrospective adjustments for the Acquired Assets, as presented in our 2015 Form 10-K filing. The second and third columns in all tables present the retrospective adjustments made to our historical financial information for the Acquired Assets prior to the effective date of acquisition. The fourth column in all tables presents our consolidated financial information as retrospectively adjusted. Millions of Dollars December 31, 2016 Consolidated Statement of Income Phillips 66 Acquired Fractionator Assets Predecessor Acquired Eagle Assets Predecessor Consolidated Revenues and Other Income Operating revenues—related parties $ 474 24 229 727 Operating revenues—third parties 14 — 17 31 Equity in earnings of affiliates 114 — — 114 Other income 1 — — 1 Total revenues and other income 603 24 246 873 Costs and Expenses Operating and maintenance expenses 120 5 91 216 Depreciation 62 5 29 96 General and administrative expenses 40 1 24 65 Taxes other than income taxes 19 2 12 33 Interest and debt expense 52 — — 52 Other expenses — — 1 1 Total costs and expenses 293 13 157 463 Income before income taxes 310 11 89 410 Provision for income taxes 2 — — 2 Net income 308 11 89 408 Less: Net income attributable to noncontrolling interests 7 (7 ) — — Less: Net income attributable to Predecessors — 18 89 107 Net income attributable to the Partnership $ 301 — — 301 Millions of Dollars December 31, 2015 Consolidated Statement of Income Phillips 66 (As Previously Reported) Acquired Fractionator Assets Predecessor Acquired Eagle Assets Predecessor Consolidated (As Currently Reported) Revenues and Other Income Operating revenues—related parties $ 260 30 292 582 Operating revenues—third parties 5 — 25 30 Equity in earnings of affiliates 77 — — 77 Other income 6 — — 6 Total revenues and other income 348 30 317 695 Costs and Expenses Operating and maintenance expenses 62 23 118 203 Depreciation 22 4 35 61 General and administrative expenses 27 5 31 63 Taxes other than income taxes 9 3 15 27 Interest and debt expense 34 — — 34 Other expenses — — 1 1 Total costs and expenses 154 35 200 389 Income (loss) before income taxes 194 (5 ) 117 306 Provision for income taxes — — — — Net income (loss) 194 (5 ) 117 306 Less: Net income (loss) attributable to Predecessors — (5 ) 117 112 Net income attributable to the Partnership $ 194 — — 194 Millions of Dollars December 31, 2014 Consolidated Statement of Income Phillips 66 (As Previously Reported) Acquired Fractionator Assets Predecessor Acquired Eagle Assets Predecessor Consolidated (As Currently Reported) Revenues and Other Income Operating revenues—related parties $ 223 15 293 531 Operating revenues—third parties 6 — 18 24 Equity in earnings of affiliates — — — — Other income — — — — Total revenues and other income 229 15 311 555 Costs and Expenses Operating and maintenance expenses 53 2 129 184 Depreciation 16 1 29 46 General and administrative expenses 26 2 29 57 Taxes other than income taxes 4 — 12 16 Interest and debt expense 5 — — 5 Other expenses — — 1 1 Total costs and expenses 104 5 200 309 Income before income taxes 125 10 111 246 Provision for income taxes 1 — — 1 Net income 124 10 111 245 Less: Net income attributable to Predecessors 8 10 111 129 Net income attributable to the Partnership $ 116 — — 116 Millions of Dollars December 31, 2015 Consolidated Balance Sheet Phillips 66 (As Previously Reported) Acquired Fractionator Assets Predecessor Acquired Eagle Assets Predecessor Consolidated (As Currently Reported) Assets Cash and cash equivalents $ 48 2 — 50 Accounts receivable—related parties 22 — — 22 Accounts receivable—third parties 3 — 4 7 Materials and supplies 2 2 4 8 Prepaid expenses 2 — — 2 Other current assets — 2 — 2 Total Current Assets 77 6 8 91 Equity investments 945 — — 945 Net properties, plants and equipment 492 1,152 793 2,437 Goodwill 3 — 179 182 Deferred rentals—related parties 6 — — 6 Other assets 1 — — 1 Total Assets $ 1,524 1,158 980 3,662 Liabilities Accounts payable—related parties $ 4 — — 4 Accounts payable—third parties 9 58 15 82 Payroll and benefits payable — 1 2 3 Accrued property and other taxes 5 3 6 14 Accrued interest 15 7 — 22 Deferred revenues—related parties 4 — — 4 Other current liabilities 1 — 3 4 Total Current Liabilities 38 69 26 133 Notes payable—related party — 964 — 964 Long-term debt 1,091 — — 1,091 Asset retirement obligations 3 1 7 11 Accrued environmental costs 1 — 3 4 Deferred income taxes — — 1 1 Deferred revenues—related parties—long-term 1 10 3 14 Total Liabilities 1,134 1,044 40 2,218 Equity Net investment—Predecessors — 114 940 1,054 Common unitholders—public (2015—24,138,750 units issued and outstanding; 2014—18,888,750 units issued and outstanding) 809 — — 809 Common unitholder—Phillips 66 (2015—58,349,042 units issued and outstanding; 2014—20,938,948 units issued and outstanding) 233 — — 233 General partner—Phillips 66 (2015—1,683,425 units issued and outstanding; (650 ) — — (650 ) Accumulated other comprehensive loss (2 ) — — (2 ) Total Equity 390 114 940 1,444 Total Liabilities and Equity $ 1,524 1,158 980 3,662 Millions of Dollars December 31, 2016 Consolidated Statement of Cash Flows Phillips 66 Acquired Fractionator Assets Predecessor Acquired Eagle Assets Predecessor Consolidated Cash Flows From Operating Activities Net income $ 308 11 89 408 Adjustments to reconcile net income to net cash provided by operating activities Depreciation 62 5 29 96 Deferred rentals 1 — — 1 Accrued environmental costs 1 — — 1 Unfunded equity losses 1 — — 1 Deferred revenues—long-term 9 — — 9 Other — 6 (2 ) 4 Working capital adjustments — Decrease (increase) in accounts receivable (58 ) — — (58 ) Decrease (increase) in materials and supplies (2 ) — — (2 ) Decrease (increase) in prepaid expenses and other current assets (2 ) — — (2 ) Increase (decrease) in accounts payable 16 1 2 19 Increase (decrease) in accrued interest 4 — — 4 Increase (decrease) in deferred revenues 10 — — 10 Increase (decrease) in other accruals (3 ) (1 ) 5 1 Net Cash Provided by Operating Activities 347 22 123 492 Cash Flows From Investing Activities Eagle acquisition (990 ) — — (990 ) Cash capital expenditures and investments (469 ) (36 ) (79 ) (584 ) Return of investment from equity affiliates 16 — — 16 Net Cash Used in Investing Activities (1,443 ) (36 ) (79 ) (1,558 ) Cash Flows From Financing Activities Net contributions from (to) Phillips 66 to (from) Predecessors — 89 (44 ) 45 Acquisition of noncontrolling interest in Sweeny Frac LLC (656 ) — — (656 ) Issuance of debt 2,090 28 — 2,118 Repayment of debt (991 ) (105 ) — (1,096 ) Issuance of common units 983 — — 983 Offering costs (12 ) — — (12 ) Debt issuance costs (10 ) — — (10 ) Distributions to General Partner associated with acquisitions (119 ) — — (119 ) Quarterly distributions to common unitholders—public (64 ) — — (64 ) Quarterly distributions to common unitholder—Phillips 66 (119 ) — — (119 ) Quarterly distributions to General Partner—Phillips 66 (76 ) — — (76 ) Other cash contributions from Phillips 66 24 — — 24 Net Cash Provided by (Used in) Financing Activities 1,050 12 (44 ) 1,018 Net Change in Cash and Cash Equivalents (46 ) (2 ) — (48 ) Cash and cash equivalents at beginning of period 48 2 — 50 Cash and Cash Equivalents at End of Period $ 2 — — 2 Millions of Dollars December 31, 2015 Consolidated Statement of Cash Flows Phillips 66 (As Previously Reported) Acquired Fractionator Assets Predecessor Acquired Eagle Assets Predecessor Consolidated (As Currently Reported) Cash Flows From Operating Activities Net income (loss) $ 194 (5 ) 117 306 Adjustments to reconcile net income (loss) to net cash provided by operating activities Depreciation 22 4 35 61 Accrued environmental costs 1 — — 1 Deferred revenues — 11 — 11 Other 3 — (2 ) 1 Working capital adjustments Decrease (increase) in accounts receivable (2 ) — 3 1 Decrease (increase) in materials and supplies — (2 ) — (2 ) Decrease (increase) in prepaid expenses and other current assets — (2 ) — (2 ) Increase (decrease) in accounts payable (8 ) 5 (6 ) (9 ) Increase (decrease) in accrued interest 13 — — 13 Increase (decrease) in deferred revenues 4 — — 4 Increase (decrease) in other accruals 3 3 1 7 Net Cash Provided by Operating Activities 230 14 148 392 Cash Flows From Investing Activities Sand Hills/Southern Hills/Explorer equity investment acquisition (734 ) — — (734 ) Cash capital expenditures and investments (205 ) (668 ) (75 ) (948 ) Return of investment from equity affiliates 12 — — 12 Other (8 ) 8 — — Net Cash Used in Investing Activities (935 ) (660 ) (75 ) (1,670 ) Cash Flows From Financing Activities Net contributions from (to) Phillips 66 to (from) Predecessors — 27 (73 ) (46 ) Issuance of debt 1,169 612 — 1,781 Repayment of debt (499 ) — — (499 ) Issuance of common units 396 — — 396 Offering costs (12 ) — — (12 ) Debt issuance costs (10 ) — — (10 ) Distributions to General Partner associated with acquisitions (146 ) — — (146 ) Quarterly distributions to common unitholders—public (35 ) — — (35 ) Quarterly distributions to common unitholder—Phillips 66 (63 ) — — (63 ) Quarterly distributions to subordinated unitholder—Phillips 66 (25 ) — — (25 ) Quarterly distributions to General Partner—Phillips 66 (30 ) — — (30 ) Net Cash Provided by (Used in) Financing Activities 745 639 (73 ) 1,311 Net Change in Cash and Cash Equivalents 40 (7 ) — 33 Cash and cash equivalents at beginning of period 8 9 — 17 Cash and Cash Equivalents at End of Period $ 48 2 — 50 Millions of Dollars December 31, 2014 Consolidated Statement of Cash Flows Phillips 66 (As Previously Reported) Acquired Fractionator Assets Predecessor Acquired Eagle Assets Predecessor Consolidated (As Currently Reported) Cash Flows From Operating Activities Net income $ 124 10 111 245 Adjustments to reconcile net income to net cash provided by operating activities Depreciation 16 1 29 46 Deferred revenues—long-term — 1 1 2 Other 1 (1 ) — — Working capital adjustments Decrease (increase) in accounts receivable (11 ) — (3 ) (14 ) Increase (decrease) in accounts payable 9 — 3 12 Increase (decrease) in accrued interest 2 — — 2 Increase (decrease) in deferred revenues 1 — — 1 Increase (decrease) in other accruals — 1 1 2 Net Cash Provided by Operating Activities 142 12 142 296 Cash Flows From Investing Activities Gold Line/Medford acquisition (138 ) — — (138 ) Bayway/Ferndale/Cross-Channel acquisition (28 ) — — (28 ) Cash capital expenditures and investments (157 ) (384 ) (118 ) (659 ) Other 8 (8 ) — — Net Cash Used in Investing Activities (315 ) (392 ) (118 ) (825 ) Cash Flows From Financing Activities Net contributions from (to) Phillips 66 to (from) Predecessors 81 37 (24 ) 94 Project prefunding from Phillips 66 2 — — 2 Issuance of debt 28 352 — 380 Repayment of debt (10 ) — — (10 ) Debt issuance costs (1 ) — — (1 ) Distributions to General Partner associated with acquisitions (262 ) — — (262 ) Quarterly distributions to common unitholders—public (21 ) — — (21 ) Quarterly distributions to common unitholder—Phillips 66 (22 ) — — (22 ) Quarterly distributions to subordinated unitholder—Phillips 66 (39 ) — — (39 ) Quarterly distributions to General Partner—Phillips 66 (4 ) — — (4 ) Other cash contributions from Phillips 66 4 — — 4 Net Cash Provided by (Used in) Financing Activities (244 ) 389 (24 ) 121 Net Change in Cash and Cash Equivalents (417 ) 9 — (408 ) Cash and cash equivalents at beginning of period 425 — — 425 Cash and Cash Equivalents at End of Period $ 8 9 — 17 2015 Acquisitions During 2015, we entered into agreements to acquire Phillips 66’s equity interests in DCP Sand Hills Pipeline, LLC (Sand Hills), DCP Southern Hills Pipeline, LLC (Southern Hills), Explorer and Bayou Bridge Pipeline, LLC (Bayou Bridge Pipeline). See Note 5—Equity Investments for information regarding our equity investments. 2014 Acquisitions Gold Line/Medford Acquisition In February 2014, we entered into a CCAA with subsidiaries of Phillips 66 to acquire the Gold Line/Medford Assets, which were operating as a business at the time of their acquisition, for total consideration of $700 million , consisting of $400 million in cash; the issuance of 3,530,595 common units to Phillips 66 Company and the issuance of 72,053 general partner units to our General Partner to maintain its 2 percent general partner interest, with an aggregate fair value of the common and general partner units of $140 million ; and the assumption by the Partnership of a five-year, $160 million note payable to a subsidiary of Phillips 66. The Gold Line/Medford Acquisition closed on February 28, 2014, with an effective date of March 1, 2014. Total transaction costs of $2 million associated with the Gold Line/Medford Acquisition were expensed as incurred. Bayway/Ferndale/Cross-Channel Acquisition In October 2014, we entered into a CCAA and a separate Purchase and Sale Agreement (PSA) with subsidiaries of Phillips 66 to acquire the Bayway and Ferndale rail racks, which were operating as businesses at the time of their acquisition, and the Cross-Channel Connector project, an organic growth project to substantially expand and redevelop a pipeline system at the Houston Ship Channel. Consideration under the CCAA was $340 million , consisting of $28 million in cash; the issuance of 1,066,412 common units to Phillips 66 Company and the issuance of 21,764 general partner units to our General Partner to maintain its 2 percent general partner interest, with an aggregate fair value of the common and general partner units of $68 million ; and the assumption by the Partnership of a five-year, $244 million note payable to a subsidiary of Phillips 66. Consideration under the PSA was $7 million , payable in cash and reflected as a payable to Phillips 66 at December 31, 2014. Both transactions comprising the Bayway/Ferndale/Cross-Channel Acquisition closed on December 1, 2014, with total estimated transaction costs of $1 million expensed as incurred. Palermo Rail Terminal Project Acquisition In December 2014, we entered into a PSA with a subsidiary of Phillips 66 to purchase real property, assets under construction and lease agreements associated with the rail terminal project for $28 million in cash. In addition, we entered into a Contribution Agreement with certain subsidiaries of Phillips 66 to acquire Phillips 66’s ownership interest in the rail terminal project, including permits, for total consideration of $8 million , consisting of the issuance of 13,129 common units to Phillips 66 Company and the issuance of 268 general partner units to our General Partner to maintain its 2 percent general partner interest, and the assumption by the Partnership of a five-year, $8 million note payable to a subsidiary of Phillips 66. The acquisitions closed on December 5, 2014, and December 10, 2014. Eagle Ford Gathering System Project Acquisition In December 2014, we entered into a PSA with a subsidiary of Phillips 66 to acquire real property and assets under construction associated with the gathering system project for total consideration of $12 million . $6 million of the consideration was cash paid in December 2014, and $6 million was reflected as a payable to Phillips 66 at December 31, 2014. The acquisition closed on December 31, 2014. In connection with the 2014 acquisitions, we entered into various commercial agreements with Phillips 66 and amended the omnibus agreement and the operational services agreement with Phillips 66. See Note 20—Related Party Transactions , for a summary of the terms of these agreements. Because the Gold Line, Medford, Bayway and Ferndale acquisitions were considered transfers of businesses between entities under common control, these acquired businesses were transferred at historical carrying value under GAAP. The carrying value of the Gold Line/Medford Assets was $138 million as of February 28, 2014. The carrying value of the Bayway and Ferndale rail racks was $143 million as of November 30, 2014. The acquisitions of the Cross-Channel, Palermo and Eagle Ford organic growth projects represented transfers of assets between entities under common control. Accordingly, these assets were also transferred at historical carrying value of $71 million , but are included in the financial statements prospectively from the effective date of each acquisition.

Equity Investments

Equity Investments	12 Months Ended
	Dec. 31, 2016
Equity Method Investments and Joint Ventures [Abstract]
Equity Investments	Equity Investments STACK Pipeline Joint Venture On August 3, 2016, we and Plains All American Pipeline, L.P. (Plains) formed STACK Pipeline, which owns and operates a crude storage terminal and a common carrier pipeline that transports crude oil from the Sooner Trend, Anadarko Basin, Canadian and Kingfisher Counties play in northwestern Oklahoma to Cushing, Oklahoma. Plains contributed the terminal and pipeline in exchange for its 50 percent interest in the joint venture. We contributed $50 million in cash, which was distributed to Plains, in exchange for our 50 percent interest in the joint venture. Bakken Joint Ventures In January 2015, we closed on agreements with Paradigm Energy Partners, LLC (Paradigm) to form two joint ventures to develop midstream logistics infrastructure in North Dakota. At closing, we contributed our Palermo Rail Terminal project for a 70 percent ownership interest in Phillips 66 Partners Terminal LLC (Phillips 66 Partners Terminal), and $5 million in cash for a 50 percent ownership interest in Paradigm Pipeline LLC (Paradigm Pipeline). We account for both joint ventures under the equity method of accounting due to governance provisions that require supermajority voting on all decisions that significantly impact the governance, management and economic performance of the joint ventures. Sand Hills/Southern Hills/Explorer Pipeline Joint Ventures In February 2015, we entered into a CCAA with subsidiaries of Phillips 66 to acquire 100 percent of Phillips 66’s one-third equity interests in Sand Hills and Southern Hills and its 19.46 percent equity interest in Explorer. The transaction closed on March 2, 2015. Total consideration for the transaction was $1,010 million consisting of $880 million in cash, funded by a portion of the proceeds from a public offering of unsecured senior notes (2015 Note Offering) and a public offering of common units (2015 Units Offering); in addition, we issued 1,587,376 common units to Phillips 66 Company and 139,538 general partner units to our General Partner to maintain its 2 percent general partner interest. Total transaction costs of $1 million were expensed as incurred in general and administrative expenses. On August 9, 2016, we acquired an additional 2.48 percent equity interest in Explorer from a third party. The acquisition increased our interest in Explorer to 21.94 percent . Bayou Bridge Joint Venture Acquisition In October 2015, we entered into a CCAA with Phillips 66 to acquire its 40 percent interest in Bayou Bridge Pipeline, a joint venture in which Energy Transfer Partners and Sunoco Logistics Partners each hold a 30 percent interest, with Sunoco Logistics serving as the operator. Bayou Bridge Pipeline began operations on the segment of its pipeline from Nederland, Texas, to Lake Charles, Louisiana, in April 2016. Development continues on the section from Lake Charles to St. James, Louisiana. The transaction closed on December 1, 2015. Total consideration for the transaction was approximately $70 million , consisting of the assumption of a $35 million note payable to Phillips 66 that was immediately paid in full; the issuance of 606,056 common units to Phillips 66 PDI; and the issuance of 12,369 general partner units to our General Partner to maintain its 2 percent general partner interest. The acquisitions of interests in the Sand Hills, Southern Hills, Explorer and Bayou Bridge Pipeline joint ventures represented transfers of investments between entities under common control. Accordingly, these equity investments were transferred at historical carrying value, and are included in the financial statements prospectively from the effective date of each acquisition. The following table summarizes our equity investments at December 31, 2016 and 2015 : Millions of Dollars Percentage Ownership Carrying Value 2016 2015 Sand Hills 33.34 % $ 445 431 Southern Hills 33.34 212 213 Explorer* 21.94 126 102 Phillips 66 Partners Terminal 70.00 72 77 Paradigm Pipeline 50.00 117 52 Bayou Bridge Pipeline 40.00 115 70 STACK Pipeline 50.00 55 — Total equity investments $ 1,142 945 *Percentage ownership was 19.46% at December 31, 2015. Southern Hills has a negative basis difference of $96 million , which originated when the pipeline, formerly known as Seaway Products, was sold by Phillips 66 to a related party. The negative basis difference represents a deferred gain and will be amortized over 45 years. Explorer has a positive basis difference of $ 98 million , which represents fair value adjustments attributable to ownership increases in the pipeline. The positive basis difference will be amortized over periods between 11 and 19 years. STACK Pipeline has a positive basis difference of $42 million which is due to the contributed assets being recorded at their historical book value. The positive basis difference is amortized over 45 years. We use the equity method of accounting for our 70 percent interest in Phillips 66 Partners Terminal due to the requirement for supermajority ( 80 percent ) or unanimous consent of the owners on key governance issues pertaining to the joint venture. Earnings from our equity investments for the years ended December 31, 2016 and 2015 were as follows: Millions of Dollars 2016 2015 Sand Hills $ 62 48 Southern Hills 26 14 Explorer 23 15 Phillips 66 Partners Terminal — — Paradigm Pipeline (2 ) — Bayou Bridge Pipeline 3 — STACK Pipeline 2 — Total equity in earnings of affiliates $ 114 77 Summarized 100 percent financial information, as of acquisition date, for all equity investments, combined, was as follows: Millions of Dollars 2016 2015 2014 Revenues $ 840 596 — Income before income taxes 494 322 — Net income 408 321 — Current assets 243 269 — Noncurrent assets 3,437 3,106 — Current liabilities 396 180 — Noncurrent liabilities 231 446 — Our share of income taxes incurred directly by equity investment companies is included in equity earnings of affiliates, and as such is not included in the provision for income taxes in our consolidated financial statements. Distributions received from these affiliates were $131 million and $89 million in 2016 and 2015, respectively.

Major Customer and Concentratio

Major Customer and Concentration of Credit Risk	12 Months Ended
	Dec. 31, 2016
Major Customer and Concentration of Credit Risk [Abstract]
Major Customer and Concentration of Credit Risk	Major Customer and Concentration of Credit Risk Phillips 66 accounted for 95 percent , 94 percent and 95 percent of our total operating revenues for the years ended December 31, 2016 , 2015 and 2014 , respectively. Through our wholly owned and joint venture operations, we provide crude oil, refined petroleum products and NGL pipeline transportation, terminaling and storage, and crude oil gathering, NGL fractionation and rail-unloading services to Phillips 66 and other related and third parties. We are potentially exposed to concentration of credit risk primarily through our accounts receivable with Phillips 66. These receivables have payment terms of 30 days or less. We monitor the credit worthiness of Phillips 66, which has an investment grade credit rating, and we have no history of collectability issues with Phillips 66.

Properties, Plants and Equipmen

Properties, Plants and Equipment	12 Months Ended
	Dec. 31, 2016
Property, Plant and Equipment [Abstract]
Properties, Plants and Equipment	Properties, Plants and Equipment Our investment in PP&E, with the associated accumulated depreciation, at December 31 was: Estimated Useful Lives Millions of Dollars 2016 2015* Land $ 19 39 Buildings and improvements 3 to 30 years 88 51 Pipelines and related assets † 10 to 45 years 1,335 1,097 Terminals and related assets † 25 to 45 years 610 547 Rail racks and related assets † 33 years 137 136 Fractionator and related assets † 25 years 615 626 Caverns and related assets † 25 to 45 years 569 277 Construction-in-progress 27 296 Gross PP&E 3,400 3,069 Less: Accumulated depreciation 725 632 Net PP&E $ 2,675 2,437 *Prior-period financial information has been retrospectively adjusted for acquisitions of businesses under common control. † Assets for which we are the lessor. See Note 14—Leases .

Goodwill

Goodwill	12 Months Ended
	Dec. 31, 2016
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill	Goodwill The carrying amount of goodwill was as follows: Millions of Dollars 2016 2015* Beginning balance January 1 $ 182 182 Goodwill assigned to acquisitions 3 — Ending balance December 31 $ 185 182 *Prior-period financial information has been retrospectively adjusted for acquisitions of businesses under common control.

Assets Retirement Obligations a

Assets Retirement Obligations and Accrued Environmental Costs	12 Months Ended
	Dec. 31, 2016
Assets Retirement Obligations and Accrued Environmental Costs [Abstract]
Asset Retirement Obligations and Accrued Environmental Costs	Asset Retirement Obligations and Accrued Environmental Costs Asset retirement obligations and accrued environmental costs at December 31 were: Millions of Dollars 2016 2015* Asset retirement obligations $ 9 11 Accrued environmental costs 2 4 Total asset retirement obligations and accrued environmental costs 11 15 Asset retirement obligations and accrued environmental costs due within one year — — Long-term asset retirement obligations and accrued environmental costs $ 11 15 *Prior-period financial information has been retrospectively adjusted for acquisitions of businesses under common control. Asset Retirement Obligations We have asset retirement obligations we are required to perform under law or contract once an asset is permanently taken out of service. These obligations primarily relate to the abandonment or removal of certain pipelines. Most of these obligations are not expected to be paid until many years in the future. During 2016 and 2015 , our overall asset retirement obligations changed as follows: Millions of Dollars 2016 2015* Balance at January 1 $ 11 11 Accretion of discount — 1 New obligations — — Changes in estimates of existing obligations (2 ) (1 ) Balance at December 31 $ 9 11 *Prior-period financial information has been retrospectively adjusted for acquisitions of businesses under common control. We do not expect any short-term spending on asset retirement obligations and, as a result, there were no such current liabilities reported on the consolidated balance sheet at December 31, 2016 and 2015 . Accrued Environmental Costs Pursuant to the terms of our amended omnibus agreement, Phillips 66 indemnifies us for the environmental liabilities associated with the assets contributed to us in connection with our Initial Public Offering (the Offering) and which arose prior to the closing of the Offering. Pursuant to the terms of various agreements under which we acquired assets from Phillips 66 since the Offering, Phillips 66 assumed the responsibility for environmental liabilities associated with the acquired assets arising prior to the effective date of each acquisition. In April 2015, our pipeline that transports products from the Hartford Terminal to a dock on the Mississippi River experienced a diesel fuel release of approximately 800 barrels. The release was halted on the same day, and cleanup and remediation efforts followed. Costs recognized during 2015 associated with cleanup and remediation of the release were $5 million . We continue to work with the appropriate authorities and costs are subject to change if additional information regarding the extent of the environmental impact of the release becomes known. We carry property and third-party liability insurance, each in excess of $5 million self-insured retentions. At December 31, 2016, we had $2 million of environmental accruals. In the future, we may be involved in additional environmental assessments, cleanups and proceedings.

Net Income Per Limited Partner

Net Income Per Limited Partner Unit	12 Months Ended
	Dec. 31, 2016
Partners' Capital Notes [Abstract]
Net Income Per Limited Partner Unit	Net Income Per Limited Partner Unit Net income per unit applicable to common and subordinated units (for the period subordinated units were outstanding) is computed by dividing these limited partners’ respective interests in net income attributable to the Partnership by the weighted average number of common units and subordinated units, respectively, outstanding for the period. Because we have more than one class of participating securities, we use the two-class method to calculate the net income per unit applicable to the limited partners. The classes of participating securities as of December 31, 2016 , included common units, general partner units and incentive distribution rights (IDRs). Basic and diluted net income per unit are the same because we do not have potentially dilutive instruments outstanding. Net income earned by the Partnership is allocated between the limited partners and the General Partner (including the General Partner’s IDRs) in accordance with our partnership agreement. First, earnings are allocated based on actual cash distributions made to our unitholders, including those attributable to the General Partner’s IDRs. To the extent net income attributable to the Partnership exceeds or is less than cash distributions, this difference is allocated based on the unitholders’ respective ownership percentages, after consideration of any priority allocations of earnings. When our financial statements are retrospectively adjusted after a dropdown transaction, the earnings of the acquired business, prior to the closing of the transaction, are allocated entirely to our General Partner and presented as net income (loss) attributable to Predecessors. The earnings per unit of our limited partners prior to the close of the transaction do not change as a result of the dropdown. After the closing of a dropdown transaction, the earnings of the acquired business are allocated in accordance with our partnership agreement as previously described. Millions of Dollars 2016 2015 2014 Net income attributable to the Partnership $ 301 194 116 Less: General partner’s distributions declared (including IDRs)* 91 39 8 Limited partners’ distributions declared on common units* 205 123 48 Limited partner’s distributions declared on subordinated units* — 13 43 Distributions less than net income attributable to the Partnership $ 5 19 17 *Distributions declared are attributable to the indicated periods. 2016 General Partner (including IDRs) Limited Partners’ Common Units Limited Partner’s Subordinated Units Total Net income attributable to the Partnership (millions): Distributions declared $ 91 205 — 296 Distributions less than net income attributable to the Partnership 1 4 — 5 Net income attributable to the Partnership $ 92 209 — 301 Weighted average units outstanding: Basic 1,920,435 95,239,901 — 97,160,336 Diluted 1,920,435 95,239,901 — 97,160,336 Net income per limited partner unit (dollars): Basic $ 2.20 — Diluted 2.20 — 2015 General Partner (including IDRs) Limited Partners’ Common Units Limited Partner’s Subordinated Units Total Net income attributable to the Partnership (millions): Distributions declared $ 39 123 13 175 Distributions less than net income attributable to the Partnership 2 14 3 19 Net income attributable to the Partnership $ 41 137 16 194 Weighted average units outstanding: Basic 1,649,169 68,173,891 12,736,051 82,559,111 Diluted 1,649,169 68,173,891 12,736,051 82,559,111 Net income per limited partner unit (dollars): Basic $ 2.02 1.24 Diluted 2.02 1.24 2014 General Partner (including IDRs) Limited Partners’ Common Units Limited Partner’s Subordinated Units Total Net income attributable to the Partnership (millions): Distributions declared $ 8 48 43 99 Distributions less than net income attributable to the Partnership — 9 8 17 Net income attributable to the Partnership $ 8 57 51 116 Weighted average units outstanding: Basic 1,499,704 38,268,371 35,217,112 74,985,187 Diluted 1,499,704 38,268,371 35,217,112 74,985,187 Net income per limited partner unit (dollars): Basic $ 1.48 1.45 Diluted 1.48 1.45 On January 18, 2017 , the Board of Directors of our General Partner declared a quarterly cash distribution of $0.5580 per limited partner unit which, combined with distributions to our General Partner, resulted in total distributions of $88 million attributable to the fourth quarter of 2016 . This distribution was paid February 13, 2017 , to unitholders of record as of January 31, 2017 . Subordinated Unit Conversion Following the May 12, 2015, payment of the cash distribution attributable to the first quarter of 2015, the requirements under the partnership agreement for the conversion of all subordinated units into common units were satisfied. As a result, in the second quarter of 2015, the 35,217,112 subordinated units held by Phillips 66 converted into common units on a one-for-one basis, and thereafter participate on terms equal with all other common units in distributions of available cash. The conversion of the subordinated units did not impact the amount of cash distributions paid by us or the total number of outstanding units.

Debt

Debt	12 Months Ended
	Dec. 31, 2016
Debt Disclosure [Abstract]
Debt	Debt Debt at December 31, 2016 and 2015 was: Millions of Dollars December 31, 2016 Fair Value Hierarchy Total Fair Value Balance Sheet Level 1 Level 2* Level 3 2.646% Senior Notes due 2020 $ — 298 — 298 300 3.605% Senior Notes due 2025 — 490 — 490 500 3.550% Senior Notes due 2026 — 483 — 483 500 4.680% Senior Notes due 2045 — 277 — 277 300 4.900% Senior Notes due 2046 — 599 — 599 625 Revolving credit facility at 1.98% at year-end 2016 — 210 — 210 210 Debt at face value $ — 2,357 — 2,357 2,435 Net unamortized discounts and debt issuance costs (24 ) Total debt $ 2,411 *The fair value was estimated using quoted market prices of comparable instruments. Millions of Dollars December 31, 2015 Fair Value Hierarchy Total Fair Value Balance Sheet Level 1 Level 2* Level 3 2.646% Senior Notes due 2020 $ — 282 — 282 300 3.605% Senior Notes due 2025 — 432 — 432 500 4.680% Senior Notes due 2045 — 225 — 225 300 Notes payable to Phillips 66 due 2020 at 3.0% — 961 — 961 964 Debt at face value $ — 1,900 — 1,900 2,064 Net unamortized discounts and debt issuance costs (9 ) Total debt $ 2,055 *The fair value was estimated using quoted market prices of comparable instruments. Maturities of borrowings outstanding at December 31, 2016, inclusive of net unamortized discounts and debt issuance costs, for the five-year period ending 2021 were $15 million in 2017, $298 million in 2020 and $195 million in 2021, respectively. 2016 Senior Notes On October 14, 2016, we closed on a notes offering (2016 Notes Offering) of $1,125 million aggregate principal amount of unsecured senior notes consisting of: • $500 million of 3.55% Senior Notes due October 1, 2026. • $625 million of 4.90% Senior Notes due October 1, 2046. Total proceeds (net of underwriting discounts) received from the 2016 Notes Offering were $1,111 million . We utilized the net proceeds to fund the cash consideration for the Eagle Acquisition and for general partnership purposes. 2015 Senior Notes On February 23, 2015, we closed on a notes offering (2015 Notes Offering) of $1,100 million aggregate principal amount of unsecured senior notes consisting of: • $300 million of 2.646% Senior Notes due February 15, 2020. • $500 million of 3.605% Senior Notes due February 15, 2025. • $300 million of 4.680% Senior Notes due February 15, 2045. Total proceeds (net of underwriting discounts) received from the 2015 Notes Offering were $1,092 million . We utilized a portion of the net proceeds to partially fund the acquisition of the Sand Hills, Southern Hills and Explorer equity investments. In addition, the Partnership used a portion of the proceeds to repay three notes payable to a subsidiary of Phillips 66. Revolving Credit Facility At December 31, 2016 , we had an aggregate of $210 million borrowed and outstanding under our revolving credit facility established by our Credit Agreement dated June 7, 2013 (the Credit Agreement), as subsequently amended in October 2016 (the Second Amendment). The Second Amendment increased the amount available under the Credit Agreement to $750 million and extended the termination date to October 3, 2021. We have the option to increase the overall capacity of the Credit Agreement by up to an additional $250 million for a total of $1 billion , subject to, among other things, the consent of the existing lenders whose commitments will be increased or any additional lenders providing such additional capacity. We also have the option to extend the Credit Agreement for two additional one -year terms after October 3, 2021, subject to, among other things, the consent of the lenders holding the majority of the commitments and of each lender extending its commitment. Outstanding borrowings under the Credit Agreement bear interest, at our option, at either: (a) the Eurodollar rate in effect from time to time plus the applicable margin; or (b) the base rate (as described in the Credit Agreement) plus the applicable margin. The pricing levels for the commitment fee and interest-rate margins are determined based on our credit ratings in effect from time to time. The Credit Agreement requires that the Partnership’s ratio of total debt to EBITDA for the prior four fiscal quarters must be no greater than 5.0 :1.0 as of the last day of each fiscal quarter (and 5.5 :1.0 during the period following certain specified acquisitions). Notes Payable On March 1, 2016, in connection with the Initial Fractionator Acquisition, we entered into an Assignment and Assumption of Note agreement with subsidiaries of Phillips 66, pursuant to which we assumed the obligations under a term promissory note (the Initial Note) with a $212 million principal balance. In August 2016, using proceeds from a unit offering, we repaid the note in its entirety. On May 10, 2016, in connection with the Subsequent Fractionator Acquisition, we entered into three separate Assignment and Assumption of Note agreements with subsidiaries of Phillips 66, pursuant to which we assumed the obligations under three term promissory notes (the Subsequent Notes), each with a $225 million principal balance. Also on May 10, 2016, using proceeds from a unit offering, we repaid two of the Subsequent Notes in their entirety, and reduced the outstanding balance on the remaining Subsequent Note to $19 million , which was repaid on June 30, 2016. Because the Initial Note and Subsequent Notes were held by entities we acquired in common control transactions, prior period debt balances have been recast as if we had held the notes since their inception in January 2014.

Equity

Equity	12 Months Ended
	Dec. 31, 2016
Equity [Abstract]
Equity	Equity ATM Program On June 6, 2016, we filed a prospectus supplement to the shelf registration statement for our continuous offering program that became effective with the Securities and Exchange Commission on May 13, 2016, related to the continuous issuance of up to an aggregate of $250 million of common units, in amounts, at prices and on terms to be determined by market conditions and other factors at the time of our offerings (such continuous offering program, or at-the-market program, referred to as our ATM Program). As of December 31, 2016 , on a settlement-date basis, we issued an aggregate of 346,152 common units under our ATM Program, generating net proceeds of $19 million , after broker commissions. The net proceeds from sales under the ATM Program are used for general partnership purposes, which may include debt repayment, future acquisitions, capital expenditures and additions to working capital. Common Unit Offerings On August 12, 2016, we completed a public offering of 6,000,000 common units representing limited partner interests at a price of $50.22 per common unit, for total proceeds (net of underwriting discounts and commissions) of $299 million . The net proceeds were used to repay the Initial Note assumed as part of the Initial Fractionator Acquisition, as well as other short-term borrowings incurred to fund our acquisition of an additional interest in Explorer and our contribution to the recently formed STACK Pipeline. See Note 4—Acquisitions and Note 11—Debt for additional information. On May 10, 2016, we completed a public offering, consisting of an aggregate of 12,650,000 common units representing limited partner interests at a price of $52.40 per common unit. We received proceeds (net of underwriting discounts and commissions) of $656 million from the offering. We utilized the net proceeds to partially repay debt assumed as part of the Subsequent Fractionator Acquisition. See Note 4—Acquisitions and Note 11—Debt for additional information. In February 2015, we completed the public offering of an aggregate of 5,250,000 common units representing limited partner interests at a price of $75.50 per common unit (the 2015 Unit Offering). We received proceeds (net of underwriting discounts and commissions) of $384 million from the offering. We utilized a portion of the net proceeds to partially fund the acquisition of the Sand Hills, Southern Hills and Explorer equity investments and to repay amounts outstanding under our revolving credit facility. We used the remaining proceeds to fund expansion capital expenditures and for general partnership purposes. See Note 5—Equity Investments for additional information on the Sand Hills, Southern Hills and Explorer acquisition.

Contingencies

Contingencies	12 Months Ended
	Dec. 31, 2016
Contingencies [Abstract]
Contingencies	Contingencies From time to time, lawsuits involving a variety of claims that arise in the ordinary course of business are filed against 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 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 accrue receivables for probable insurance or other third-party recoveries. In the case of income-tax-related contingencies, we use a cumulative probability-weighted loss accrual in cases where sustaining a tax position is less than certain. Based on currently available information, we believe it is remote that future costs related to known contingent liability exposures will exceed current accruals by an amount that would have a material adverse impact on our consolidated financial statements. As we learn new facts concerning contingencies, we reassess our position both with respect to accrued liabilities and other potential exposures. Estimates particularly sensitive to future changes include any contingent liabilities recorded for environmental remediation, tax and legal matters. Estimated future environmental remediation costs are subject to change due to such factors as the uncertain magnitude of cleanup costs, the unknown time and extent of such remedial actions that may be required, and the determination of our liability in proportion to that of other potentially responsible parties. Estimated future costs related to tax and legal matters are subject to change as events evolve and as additional information becomes available during the administrative and litigation processes. Environmental We are subject to federal, state and local environmental laws and regulations. We record accruals for contingent environmental liabilities based on management’s best estimates, using all information that is 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 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. At December 31, 2016 , we had $2 million of environmental accruals. In the future, we may be involved in additional environmental assessments, cleanups and proceedings. See Note 9—Asset Retirement Obligations and Accrued Environmental Costs , for a summary of our accrued environmental liabilities. Legal Proceedings Under our amended omnibus agreement, Phillips 66 provides certain services for our benefit, including legal support services, and we pay an operational and administrative support fee for these services. Phillips 66’s 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. The process facilitates the early evaluation and quantification of potential exposures in individual cases and enables tracking of those cases that have been scheduled for trial and/or mediation. Based on professional judgment and experience in using these litigation management tools and available information about current developments in all our cases, Phillips 66’s legal organization regularly assesses the adequacy of current accruals and determines if adjustment of existing accruals, or establishment of new accruals, is required. As of December 31, 2016 and 2015 , we did not have any material accrued contingent liabilities associated with litigation matters. Indemnification and Excluded Liabilities Under our amended omnibus agreement and pursuant to the terms of various agreements under which we acquired assets from Phillips 66, Phillips 66 will indemnify us, or assume responsibility, for certain environmental liabilities, tax liabilities, litigation and any other liabilities attributable to the ownership or operation of the assets contributed to us and that arose prior to the effective date of each acquisition. These indemnifications and exclusions from liability have, in some cases, time limits and deductibles. When Phillips 66 performs under any of these indemnifications or exclusions from liability, we recognize a non-cash expense and an associated non-cash capital contribution from our General Partner, as these are considered liabilities paid for by a principal unitholder. We have assumed, and have agreed to pay, discharge and perform as and when due, all liabilities arising out of or attributable to the ownership or operation of the assets, or other activities occurring in connection with and attributable to the ownership or operation of the assets, from and after the effective date of each acquisition.

Leases

Leases	12 Months Ended
	Dec. 31, 2016
Leases [Abstract]
Leases	Leases Lessor We have certain services agreements with Phillips 66 that are considered operating leases under GAAP. These agreements include escalation clauses to adjust transportation tariffs and terminaling and storage fees to reflect changes in price indices. Revenues from these agreements are recorded within “Operating revenues—related parties” on our consolidated statement of income. As of December 31, 2016 , future minimum payments to be received related to these agreements were estimated to be: Millions of Dollars 2017 $ 556 2018 538 2019 506 2020 502 2021 494 Remaining years 1,848 Total $ 4,444 Lessee We have operating lease agreements with Phillips 66 for the land underlying or associated with certain assets. Due to the economic infeasibility of canceling these leases, we consider them non-cancellable. For the year ended December 31, 2016, the operating leases rental expense was $2 million . The future minimum lease payments as of December 31, 2016 , for the operating lease obligations were: Millions of Dollars 2017 $ 3 2018 3 2019 3 2020 3 2021 3 Remaining years 95 Total minimum lease payments $ 110

Employee Benefit Plans

Employee Benefit Plans	12 Months Ended
	Dec. 31, 2016
Compensation and Retirement Disclosure [Abstract]
Employee Benefit Plans	Employee Benefit Plans Pension and Retirement Savings Plans Neither we nor our subsidiaries have any employees. Our General Partner has the sole responsibility for providing the employees and other personnel necessary to conduct our operations. All of the employees that conduct our wholly owned businesses are employed by Phillips 66. Those employees participate in the pension, postretirement health insurance and defined contribution benefit plans sponsored by Phillips 66. Most employees of Phillips 66 who provide direct support to our operations do so under the provisions of the amended operational services agreement, which burdens labor charges with benefit costs. For those remaining Phillips 66 employees who directly support our business, their pension, postretirement health insurance and defined contribution benefit plan costs were included within the consolidated financial statements and do not have a material impact.

Unit-Based Compensation

Unit-Based Compensation	12 Months Ended
	Dec. 31, 2016
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Unit-Based Compensation	Unit-Based Compensation The Board of Directors of our General Partner adopted the Phillips 66 Partners LP 2013 Incentive Compensation Plan (the ICP) in the third quarter of 2013. Awards under the ICP are available for officers, directors and employees of our General Partner or its affiliates, and any consultants or other individuals who perform services for the Partnership. The ICP allows for the grant of unit awards, restricted units, phantom units, unit options, unit appreciation rights, distribution equivalent rights, profits interest units and other unit-based awards. The ICP limits the number of common units that may be delivered pursuant to awards to 2,500,000 , subject to proportionate adjustment in the event of unit splits and similar events. From the closing of the Offering through December 31, 2016 , we have only issued phantom units to non-employee directors under the ICP. A phantom unit entitles the recipient to receive cash equal to the fair market value of a common unit on the date the phantom unit is settled after the vesting period (settlement date), and to also receive a distribution equivalent each quarter between the grant date and the settlement date in an amount equal to any cash distributions paid on a common unit during that time. During the years ended December 31, 2016 , 2015 , and 2014 , we granted a total of 4,880 , 2,343 and 4,161 phantom units, respectively, to three non-employee directors of the Partnership. On the grant date, phantom units awarded to non-employee directors become non-forfeitable; therefore, we immediately recognize expense equal to the grant-date fair value of the award. These phantom units do not convey voting rights.

Income Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes We are not a taxable entity for U.S. federal income tax purposes or for the majority of states that impose an income tax. Taxes on our net income generally are borne by our partners through the allocation of taxable income. Our income tax provision results from state laws that apply to entities organized as partnerships. For us, this is primarily Texas. Income taxes charged to income were: Millions of Dollars 2016 2015* 2014* Current $ 2 — 1 Deferred — — — Total $ 2 — 1 *Prior-period financial information has been retrospectively adjusted for acquisitions of businesses under common control. At December 31, 2016 and 2015 , we had a deferred tax liability of $2 million and $1 million , respectively. The deferred tax liability was primarily associated with PP&E and equity investments. In conjunction with the Fractionator Acquisitions and Eagle Acquisition, a deferred tax liability of $1 million was recorded in the equity account of our General Partner. Our effective tax rate was less than one percent for the years ended December 31, 2016 , 2015 and 2014 . As of December 31, 2016 and 2015 , we had no liability reported for unrecognized tax benefits, and we did not have any interest or penalties related to income taxes for the years ended December 31, 2016 , 2015 and 2014 . Texas tax returns for the years 2012 through 2016 are subject to examination.

Cash Flow Information

Cash Flow Information	12 Months Ended
	Dec. 31, 2016
Cash Flow Information [Abstract]
Cash Flow Information	Cash Flow Information The 2016, 2015, and 2014 acquisitions had cash and noncash elements. The common and general partner units issued to Phillips 66 in the Eagle, Sand Hills/Southern Hills/Explorer, Bayway/Ferndale/Cross-Channel and Gold Line/Medford acquisitions were assigned no value, because the cash consideration and note payable assumption exceeded the historical net book value of the acquired assets for each acquisition. Accordingly, the units issued for these acquisitions had no impact on partner capital balances, other than changing ownership percentages. Eagle Acquisition We attributed $990 million of the total $1,109 million cash consideration paid to the historical book value of the assets acquired (an investing cash outflow). The remaining $119 million of excess cash consideration was deemed a distribution to our General Partner (a financing cash outflow). Subsequent Fractionator Acquisition The Subsequent Fractionator Acquisition had both cash and noncash elements. The historical book value of the net assets acquired was $871 million . Of this amount, $656 million was a financing cash outflow, representing the acquisition of the noncontrolling interest in Sweeny Frac LLC, through the repayment of a portion of the debt assumed in the transaction. The remaining debt financing balance of $19 million represented a noncash investing and financing activity. The remaining $196 million of book value was attributed to the common and general partner units issued (a noncash investing and financing activity). Initial Fractionator Acquisition The Initial Fractionator Acquisition was a noncash transaction. The historical book value of the net assets of our 25 percent interest acquired was $283 million . Of this amount, $212 million was attributed to the note payable assumed (a noncash investing and financing activity). The remaining $71 million was attributed to the common and general partner units issued (a noncash investing and financing activity). Bayou Bridge Joint Venture Acquisition Total consideration paid for the transaction was approximately $70 million , consisting of the assumption of a $35 million note payable to Phillips 66 that was immediately paid in full (an investing cash outflow). The remaining $35 million of book value was attributed to the common and general partner units issued (a noncash investing and financing activity). Sand Hills, Southern Hills and Explorer Acquisition We attributed $734 million of the total $880 million cash consideration paid to the investment balance of the Sand Hills, Southern Hills and Explorer equity investments acquired (an investing cash outflow). The remaining $146 million of excess cash consideration was deemed a distribution to our General Partner (a financing cash outflow). Eagle Ford Gathering System Project Acquisition We paid consideration of $12 million for the Eagle Ford Gathering System project, the same as its historical book value. In December 2014, $6 million of the consideration was paid in cash (an investing cash outflow), and $6 million was reflected as a payable to Phillips 66 at December 31, 2014. Palermo Rail Terminal Project Acquisition The historical book value of the Palermo Rail Terminal project was $42 million . Cash consideration was $28 million , of which we paid $27 million in December 2014 (an investing cash outflow) and $1 million was reflected as a payable to Phillips 66 at December 31, 2014. Noncash consideration consisted of the assumption of a $8 million note payable (noncash investing and financing activities) and the issuance of common and general partner units to Phillips 66 with an aggregate allocated value of $6 million (a noncash financing activity). Bayway/Ferndale/Cross-Channel Acquisition The historical net book value of the assets acquired in the Bayway/Ferndale/Cross-Channel Acquisition was $160 million . Cash consideration was $35 million , of which we paid $28 million in December 2014 (an investing cash outflow) and $7 million was reflected as a payable to Phillips 66 at December 31, 2014. We attributed $125 million of the $244 million note payable assumed to the remaining historical book value of the net assets acquired (noncash investing and financing activities). The remaining $119 million of the note payable assumed was deemed a noncash distribution to our General Partner (a noncash financing activity), which reduced our General Partner’s capital balance by that amount. Gold Line/Medford Acquisition We attributed $138 million of the total $400 million cash consideration paid to the historical book value of the assets acquired (an investing cash outflow). The remaining $262 million of excess cash consideration was deemed a distribution to our General Partner (a financing cash outflow). The assumption of the $160 million note payable was deemed a noncash distribution to our General Partner (a noncash financing activity). Together, the excess cash consideration and the assumption of the note payable resulted in a $422 million reduction in our General Partner’s capital balance. Our capital expenditures and investments consisted of: Millions of Dollars 2016 2015 2014 Capital Expenditures and Investments Capital expenditures attributable to Predecessors* $ 96 690 707 Capital expenditures and investments attributable to the Partnership 461 205 66 Total capital expenditures and investments* $ 557 895 773 *Prior-period financial information has been retrospectively adjusted for acquisitions of businesses under common control. Millions of Dollars 2016 2015* 2014* Capital Expenditures and Investments Cash capital expenditures and investments $ 584 948 659 Change in capital expenditure accruals (27 ) (53 ) 114 Total capital expenditures and investments $ 557 895 773 *Prior-period financial information has been retrospectively adjusted for acquisitions of businesses under common control. Millions of Dollars 2016 2015 2014 Other Noncash Investing and Financing Activities Contributions of net assets into joint ventures $ — 43 — Certain liabilities of acquired assets retained by Phillips 66 (1) 50 — 15 Cash Payments Interest and debt expense $ 40 18 3 (1) Certain liabilities of the Acquired Assets were retained by Phillips 66, pursuant to the terms of various agreements under which we acquired assets from Phillips 66 since the Offering. See Note 13—Contingencies for additional information on these excluded liabilities associated with the Acquired Assets.

Other Financial Information

Other Financial Information	12 Months Ended
	Dec. 31, 2016
Other Income and Expenses [Abstract]
Other Financial Information	Other Financial Information Millions of Dollars 2016 2015* 2014* Interest and Debt Expense Incurred Debt $ 56 65 12 Other 1 1 — 57 66 12 Capitalized (5 ) (32 ) (7 ) Expensed $ 52 34 5 Other Income Co-venturer contractual make-whole payments $ 1 6 — Total other income $ 1 6 — *Prior-period financial information has been retrospectively adjusted for acquisitions of businesses under common control.

Related Party Transactions

Related Party Transactions	12 Months Ended
	Dec. 31, 2016
Related Party Transactions [Abstract]
Related Party Transactions	Related Party Transactions Commercial Agreements In connection with the Offering and subsequent acquisitions from Phillips 66, we entered into multiple commercial agreements with Phillips 66, including transportation services agreements, terminal services agreements, storage services agreements, stevedoring services agreements, a fractionation service agreement and rail terminal services agreements. Under these long-term, fee-based agreements, we provide transportation, terminaling, storage, stevedoring, fractionation and rail terminal services to Phillips 66, and Phillips 66 commits to provide us with minimum quarterly throughput volumes of crude oil, NGL and refined petroleum products or minimum monthly service fees. Under our transportation and terminaling services agreements, if Phillips 66 fails to transport, throughput or store its minimum throughput volume during any quarter, then Phillips 66 will pay us a deficiency payment based on the calculation described in the agreement. Amended Operational Services Agreement Under our amended operational services agreement, we reimburse Phillips 66 for providing certain operational services to us in support of our pipelines, terminaling and storage facilities. These services include routine and emergency maintenance and repair services, routine operational activities, routine administrative services, construction and related services and such other services as we and Phillips 66 may mutually agree upon from time to time. Amended Omnibus Agreement The amended omnibus agreement addresses our payment of an annual operating and administrative support fee and our obligation to reimburse Phillips 66 for all other direct or allocated costs and expenses incurred by Phillips 66 in providing general and administrative services. Additionally, the omnibus agreement addresses Phillips 66’s indemnification to us and our indemnification to Phillips 66 for certain environmental and other liabilities related to the assets we acquired in connection with the Offering, and the prefunding of certain projects by Phillips 66. Further, it addresses the granting of a license from Phillips 66 to us with respect to the use of certain Phillips 66 trademarks. Tax Sharing Agreement In connection with the Offering, we entered into a tax sharing agreement with Phillips 66 pursuant to which we will reimburse Phillips 66 for our share of state and local income and other taxes incurred by Phillips 66 due to our results of operations being included in a combined or consolidated tax return filed by Phillips 66 with respect to taxable periods including or beginning on or after the closing date of the Offering. The amount of any such reimbursement will be limited to the tax that we (and our subsidiaries) would have paid had we not been included in a combined group with Phillips 66. Phillips 66 may use its tax attributes to cause its combined or consolidated group to owe no tax. We would nevertheless reimburse Phillips 66 for the tax we would have owed, even though Phillips 66 had no cash expense for that period. Related Party Transactions Significant related party transactions included in operating and maintenance expenses, general and administrative expenses and interest and debt expense were: Millions of Dollars 2016 2015* 2014* Operating and maintenance expenses $ 122 95 77 General and administrative expenses 56 58 52 Interest and debt expense 3 2 5 Total $ 181 155 134 *Prior-period financial information has been retrospectively adjusted for acquisitions of businesses under common control. We pay Phillips 66 a monthly operational and administrative support fee under the terms of our amended omnibus agreement in the amount of $7 million . In prior periods, the monthly fee paid to Phillips 66 was $1 million from July 26, 2013 through February 28, 2014, $2 million from March 1, 2014, to March 1, 2015, and $3 million from March 2, 2015, to October 13, 2016, reflecting the growth in our operations. The operational and administrative support fee is for the provision of certain services, including: executive services; financial and administrative services (including treasury and accounting); information technology; legal services; corporate health, safety and environmental services; facility services; human resources services; procurement services; corporate engineering services, including asset integrity and regulatory services; logistical services; asset oversight, such as operational management and supervision; business development services; investor relations; tax matters; and public company reporting services. We also reimburse Phillips 66 for all other direct or allocated costs incurred on behalf of us, pursuant to the terms of our amended omnibus agreement. The classification of these charges between operating and maintenance expenses and general and administrative expenses is based on the functional nature of the services being performed for our operations. Under our amended operational services agreement, we reimburse Phillips 66 for the provision of certain operational services to us in support of our pipelines, rail racks, fractionator, and terminaling and storage facilities. Additionally, we pay Phillips 66 for insurance services provided to us. Operating and maintenance expenses also include volumetric gain/loss associated with volumes transported by Phillips 66.

New Accounting Standards

New Accounting Standards	12 Months Ended
	Dec. 31, 2016
New Accounting Standards [Abstract]
New Accounting Standards	New Accounting Standards In January 2017, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) 2017-04, “Intangibles—Goodwill and Other—Simplifying the Test for Goodwill Impairment,” which eliminates Step 2 from the goodwill impairment test. Under the revised test, an entity should perform its annual, or interim, goodwill impairment test by comparing the fair value of a reporting unit with its carrying amount. An entity should recognize an impairment charge for the amount by which the carrying amount exceeds the reporting unit’s fair value; however, the loss recognized should not exceed the total amount of goodwill allocated to that reporting unit. Public business entities should apply the guidance in ASU No. 2017-04 for its annual or any interim goodwill impairment tests in fiscal years beginning after December 15, 2019, with early adoption permitted. We are currently evaluating the provisions of ASU No. 2017-04. In January 2017, the FASB issued ASU No. 2017-01, “Business Combinations: Clarifying the Definition of a Business,” which clarifies the definition of a business with the objective of adding guidance to assist in evaluating whether transactions should be accounted for as acquisitions of assets or businesses. The amendment provides a screen for determining when a transaction involves an acquisition of a business. If substantially all of the fair value of the gross assets acquired is concentrated in a single identifiable asset or a group of similar identifiable assets, then the transaction does not involve acquisition of a business. If the screen is not met, then the amendment requires that to be considered a business, the operation must include at a minimum an input and a substantive process that together significantly contribute to the ability to create an output. The guidance may reduce the number of transactions accounted for as business acquisitions. Public business entities should apply the guidance in ASU No. 2017-01 to annual periods beginning after December 15, 2017, including interim periods within those periods, with early adoption permitted. The amendments should be applied prospectively, and no disclosures are required at the effective date. We are currently evaluating the provisions of ASU No. 2017-01. In November 2016, the FASB issued ASU No. 2016-18, “Statement of Cash Flows (Topic 230): Restricted Cash,” which clarifies the classification and presentation of changes in restricted cash. The amendment requires that a statement of cash flows explain the change during the period in the total of cash, cash equivalents, and amounts generally described as restricted cash and restricted cash equivalents. Public business entities should apply the guidance in ASU No. 2016-18 on a retrospective basis for annual periods beginning after December 15, 2017, including interim periods within those annual periods, with early adoption permitted. We do not expect the adoption of this ASU to have a material impact on our financial statements. In August 2016, the FASB issued ASU No. 2016-15, “Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments,” which clarifies the treatment of several cash flow categories. In addition, ASU No. 2016-15 clarifies that when cash receipts and cash payments have aspects of more than one class of cash flows and cannot be separated, classification will depend on the predominant source or use. Public business entities should apply the guidance in ASU No. 2016-15 on a retrospective basis for annual periods beginning after December 15, 2017, including interim periods within those annual periods, with early adoption permitted. We are currently evaluating the provisions of ASU No. 2016-15 and assessing the impact on our financial statements. In February 2016, the FASB issued ASU No. 2016-02, “Leases (Topic 842).” In the new standard, the FASB modified its determination of whether a contract is a lease rather than whether a lease is a capital or operating lease under the previous GAAP. A contract represents a lease if a transfer of control occurs over identified PP&E for a period of time in exchange for consideration. Control over the use of the identified asset includes the right to obtain substantially all of the economic benefits from the use of the asset and the right to direct its use. The FASB continued to maintain two classifications of leases - financing and operating - which are substantially similar to capital and operating leases in the previous lease guidance. Under the new standard, recognition of assets and liabilities arising from operating leases will require recognition on the balance sheet. The effect of all leases in the statement of comprehensive income and the statement of cash flows will be largely unchanged. Lessor accounting will also be largely unchanged. Additional disclosures will be required for financing and operating leases for both lessors and lessees. Public business entities should apply the guidance in ASU No. 2016-02 for annual periods beginning after December 15, 2018, including interim periods within those annual periods. Early adoption is permitted. We are currently evaluating the provisions of ASU No. 2016-02 and assessing its impact on our financial statements. In January 2016, the FASB issued ASU No. 2016-01, “Financial Instruments-Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities,” to meet its objective of providing more decision-useful information about financial instruments. The majority of this ASU’s provisions amend only the presentation or disclosures of financial instruments; however, one provision will also affect net income. Equity investments carried under the cost method or lower of cost or fair value method of accounting, in accordance with current GAAP, will have to be carried at fair value upon adoption of ASU No. 2016-01, with changes in fair value recorded in net income. For equity investments that do not have readily determinable fair values, a company may elect to carry such investments at cost less impairments, if any, adjusted up or down for price changes in similar financial instruments issued by the investee, when and if observed. Public business entities should apply the guidance in ASU No. 2016-01 for annual periods beginning after December 15, 2017, and interim periods within those annual periods, with early adoption prohibited. We are currently evaluating the provisions of ASU No. 2016-01. Our initial review indicates that ASU No. 2016-01 will have a limited impact on our financial statements. In May 2014, the FASB issued ASU No. 2014-09, “Revenue from Contracts with Customers (Topic 606).” The new standard converged guidance on recognizing revenues in contracts with customers under GAAP and International Financial Reporting Standards. This ASU is intended to improve comparability of revenue recognition practices across entities, industries, jurisdictions and capital markets and expand disclosure requirements. In August 2015, the FASB issued ASU No. 2015-14, “Revenue from Contracts with Customers (Topic 606): Deferral of the Effective Date.” The amendment in this ASU defers the effective date of ASU No. 2014-09 for all entities for one year. Public business entities should apply the guidance in ASU No. 2014-09 to annual reporting periods beginning after December 15, 2017, including interim reporting periods within that reporting period. Earlier adoption is permitted only as of annual reporting periods beginning after December 31, 2016, including interim reporting periods within that reporting period. Retrospective or modified retrospective application of the accounting standard is required. ASU No. 2014-09 was further amended in March 2016 by the provisions of ASU No. 2016-08, “Principal versus Agent Considerations (Reporting Revenue Gross versus Net),” in April 2016 by the provisions of ASU No. 2016-10, “Identifying Performance Obligations and Licensing,” in May 2016 by the provisions of ASU No. 2016-12, “Narrow-Scope Improvements and Practical Expedients,” and in December 2016 by the provisions of ASU No. 2016-20, “Technical Corrections to Topic 606, revenue from Contracts with Customers.” As part of our assessment work-to-date, we have formed an implementation work team, completed training on the new ASU’s revenue recognition model and are continuing our contract review and documentation. Our expectation is to adopt the standard on January 1, 2018, using the modified retrospective application. Our evaluation of this standard is ongoing.

Selected Quarterly Financial Da

Selected Quarterly Financial Data (Unaudited)	12 Months Ended
	Dec. 31, 2016
Selected Quarterly Financial Information [Abstract]
Selected Quarterly Financial Data (Unaudited)	Selected Quarterly Financial Data (Unaudited) Millions of Dollars Per Common Unit Total Revenues Income Before Income Taxes Net Income Net Income Attributable to the Partnership Limited Partners’ Interest in Net Income Attributable to the Partnership Net Income Attributable to the Partnership Basic and Diluted 2016 First $ 204 94 94 52 36 0.44 Second 219 101 100 68 47 0.51 Third 222 112 112 83 57 0.57 Fourth 228 103 102 98 69 0.65 2015* First $ 150 61 61 35 29 0.39 Second 168 72 72 42 33 0.50 Third 174 78 78 53 41 0.50 Fourth 203 95 95 64 50 0.61 *Prior-period financial information has been retrospectively adjusted for acquisitions of businesses under common control.

Summary of Significant Accoun30

Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2016
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation We have acquired assets from Phillips 66 that were considered transfers of businesses between entities under common control. This required the transactions to be accounted for as if the transfers had occurred at the beginning of the transfer period, with prior periods retrospectively adjusted to furnish comparative information. Accordingly, the accompanying financial statements and related notes have been retrospectively adjusted to include the historical results and financial position of these acquired businesses prior to the effective date of each acquisition. We refer to these pre-acquisition operations as those of our “Predecessors.” The combined financial statements of our Predecessors were derived from the accounting records of Phillips 66 and reflect the combined historical results of operations, financial position and cash flows of our Predecessors as if such businesses had been combined for all periods presented. All intercompany transactions and accounts within our Predecessors have been eliminated. The assets and liabilities of our Predecessors in these financial statements have been reflected on a historical cost basis because the transfer of the Predecessors to us took place within the Phillips 66 consolidated group. The consolidated statement of income also includes expense allocations for certain functions performed by Phillips 66, including allocations of general corporate expenses related to executive oversight, accounting, treasury, tax, legal, information technology and procurement; and operational support services such as engineering and logistics. These allocations were based primarily on relative values of properties, plants and equipment and equity-method investments, or number of terminals and pipeline miles, and secondarily on activity-based cost allocations. Our management believes the assumptions underlying the allocation of expenses from Phillips 66 are reasonable. Nevertheless, the financial results of our Predecessors may not include all of the actual expenses that would have been incurred had our Predecessors been a stand-alone publicly traded partnership during the periods presented.
Consolidation Principles and Investments	Consolidation Principles and Investments Our consolidated financial statements include the accounts of majority-owned subsidiaries. All intercompany transactions and accounts have been eliminated. The equity method is used to account for investments in affiliates in which we have the ability to exert significant influence over the affiliates’ operating and financial policies. Undivided interests in pipelines are consolidated on a proportionate basis.
Net Investment	Net Investment In the consolidated balance sheet, “Net investment” represents Phillips 66’s historical investment in us, our accumulated net earnings after taxes, and the net effect of transactions with, and allocations from, Phillips 66.
Use of Estimates	Use of Estimates The preparation of financial statements in conformity with generally accepted accounting principles (GAAP) in the United States requires management to make estimates and assumptions that affect the reported amounts of assets, liabilities, revenue and expenses, as well as the disclosures of contingent assets and liabilities. Actual results could differ from these estimates.
Common Control Transactions	Common Control Transactions Businesses acquired from Phillips 66 and its subsidiaries are accounted for as common control transactions whereby the net assets acquired are combined with ours at their carrying value. Any difference between carrying value and recognized consideration is treated as a capital transaction. To the extent that such transactions require prior periods to be recast, historical net equity amounts prior to the transaction date are reflected in “Net Investment.” Cash consideration up to the carrying value of net assets acquired is presented as an investing activity in our consolidated statement of cash flows. Cash consideration in excess of the carrying value of net assets acquired is presented as a financing activity in our consolidated statement of cash flows.
Revenue Recognition	Revenue Recognition Revenue is recognized for NGL, crude oil and refined petroleum product pipeline transportation based on the delivery of actual volumes transported at contractual tariff rates. Revenue is recognized for NGL, crude oil and refined petroleum product terminaling, storage, and fractionation services as performed based on contractual rates related to throughput volumes, capacity or cost-plus-margin arrangements. A significant portion of our revenue is derived from Phillips 66. Transportation contracts that are operating leases and include rentals with fixed escalation are recognized on a straight-line basis over the lease term. Any difference between the transportation fee recognized under the straight-line method and the transportation fee received in cash is deferred to the consolidated balance sheet as “Deferred rentals-related parties.” If the underlying transportation contract is amended to eliminate fixed escalation, the balance of deferred rentals is amortized over the remaining life of the contract. Certain transportation services agreements, terminal services agreements and a fractionation service agreement with Phillips 66 are considered operating leases under GAAP. Revenues from these agreements are recorded within “Operating revenues—related parties” on our combined statement of income. See Note 14—Leases for additional information on these operating leases and Note 20—Related Party Transactions for additional information on our agreements with Phillips 66. Billings to Phillips 66 for shortfall volumes under its quarterly minimum volume commitments are recorded as “Deferred revenues—related parties” in our combined balance sheet, as Phillips 66 has the right to make up the shortfall volumes in the following four quarters. The deferred revenue will be recognized at the earlier of when shortfall volumes are made up or when the make-up rights contractually expire. At the time the Clemens Caverns commenced operations, the caverns had not reached total planned working capacity contracted under the storage agreement. During the build-out of the remaining capacity, a portion of the monthly storage fees is deferred. The deferred revenue is recognized over the remaining term of the agreement as additional storage capacity is placed into service.
Cash Equivalents	Cash Equivalents Cash equivalents are highly liquid, short-term investments that are readily convertible to known amounts of cash and will mature within 90 days or less from the date of acquisition. We carry these at cost plus accrued interest, which approximates fair value.
Imbalances	Imbalances We do not purchase or produce NGL, crude oil or refined petroleum product inventories. We experience imbalances as a result of variances in meter readings and in other measurement methods, and volume fluctuations within our NGL, crude oil and refined products systems due to pressure and temperature changes. Certain of our transportation contracts provide for the shipper to pay a contractual loss allowance, which is valued using quoted market prices of the applicable commodity being shipped. These contractual loss allowances, which are received from the shipper irrespective of, and calculated independently from, actual volumetric gains or losses, are recorded as revenue. Any actual volumetric gains or losses are valued using quoted market prices of the applicable commodities and are recorded as decreases or increases to operating and maintenance expenses, respectively.
Fair Value Measurements	Fair Value Measurements We measure assets and liabilities requiring fair value presentation or disclosure using an exit price (i.e., the price that would be received to sell an asset or paid to transfer a liability) and disclose such amounts according to the quality of valuation inputs under the following hierarchy: Level 1: Quoted prices in an active market for identical assets or liabilities. Level 2: Observable inputs other than quoted prices included within Level 1 for the asset or liability, either directly or indirectly through market-corroborated inputs. Level 3: Unobservable inputs that are significant to the fair value of assets or liabilities. We classify the fair value of an asset or liability based on the lowest level of input significant to its measurement. A fair value 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. Asset and liability fair values initially reported as Level 2 will be subsequently reported as Level 3 if corroborating market data becomes unavailable. The carrying amounts of our trade receivables and payables approximate fair values. Nonrecurring Fair Value Measurements Fair value measurements are applied with respect to our nonfinancial assets and liabilities measured on a nonrecurring basis, which consist primarily of asset retirement obligations. Nonrecurring fair value measurements are also applied, when applicable, to determine the fair value of our long-lived assets.
Properties, Plants and Equipment (PP&E)	Properties, Plants and Equipment (PP&E) PP&E is stated at cost. Costs of maintenance and repairs, which are not significant improvements, are expensed when incurred. Depreciation of PP&E is determined by the individual-unit-straight-line method or the group-straight-line method (for those individual units that are highly integrated with other units).
Capitalized Interest	Capitalized Interest Interest from external borrowings is capitalized on major projects with an expected construction period of six months or longer. Capitalized interest is added to the cost of the underlying asset’s PP&E and is amortized over the useful life of the asset.
Major Maintenance Activities	Major Maintenance Activities Costs for planned integrity management projects are expensed in the period incurred. These types of costs include inspection services, contractor repair services, materials and supplies, equipment rentals and labor costs.
Impairment of PP&E	Impairment of PP&E PP&E used in operations are assessed for impairment whenever changes in facts and circumstances indicate a possible significant deterioration in the future cash flows expected to be generated by an asset group. If, upon review, the sum of the undiscounted pretax cash flows is less than the carrying value of the asset group, including applicable liabilities, then the carrying value is written down to estimated fair value and reported as impairments in the period in which the determination of the impairment is made. Individual assets are grouped for impairment purposes at the lowest level for which identifiable cash flows are largely independent of the cash flows of other groups of assets—generally at the pipeline system, terminal level or fractionation system. Since there usually is a lack of quoted market prices for our long-lived assets, the fair value of potentially impaired assets is typically determined based on the present values of expected future cash flows using discount rates believed to be consistent with those used by principal market participants or based on a multiple of operating cash flow validated with historical market transactions of similar assets where possible. The expected future cash flows used for impairment reviews and related fair value calculations are based on estimated future throughputs, tariffs and fees, operating costs and capital project decisions, considering all available evidence at the date of review.
Goodwill	Goodwill Goodwill represents the excess of the purchase price over the estimated fair value of the net assets acquired in the acquisition of a business. Goodwill is not amortized, but rather is tested for impairment annually and when events or changes in circumstances indicate that the fair value of the reporting unit with goodwill has been reduced below carrying value. The majority of our goodwill was received through acquisitions from Phillips 66. In these common control transactions, the net assets acquired are recorded at Phillips 66’s historical carrying value, including any associated goodwill. We have one reporting unit with a goodwill balance for testing goodwill for impairment.
Asset Retirement Obligations and Environmental Costs	Asset Retirement Obligations and Environmental Costs Fair values of legal obligations to abandon or remove long-lived assets are recorded in the period in which the obligation is incurred. When the liability is initially recorded, we capitalize this cost by increasing the carrying amount of the related PP&E. Over time, the liability is increased for the change in its present value, and the capitalized cost in PP&E is depreciated over the useful life of the related asset. Our estimate may change after initial recognition, in which case we record an adjustment to the liability and PP&E. Environmental expenditures are expensed or capitalized, depending upon their future economic benefit. Expenditures relating to an existing condition caused by past operations, and those having no future economic benefit, are expensed. Liabilities for environmental expenditures are recorded on an undiscounted basis (unless acquired in a purchase business combination) when environmental assessments or cleanups are probable and the costs can be reasonably estimated.
Impairment of Investments in Nonconsolidated Entities	Impairment of Investments in Nonconsolidated Entities Investments in nonconsolidated entities are assessed for impairment whenever changes in the facts and circumstances indicate a loss in value has occurred. When indicators exist, the fair value is estimated and compared to the investment carrying value. If any impairment is judgmentally determined to be other than temporary, the carrying value of the investment is written down to fair value. The fair value of the impaired investment is based on quoted market prices, if available, or upon the present value of expected future cash flows using discount rates and other assumptions believed to be consistent with those used by principal market participants and a market analysis of comparable assets, if appropriate.
Income Taxes	Income Taxes We follow the asset and liability method of accounting for income taxes. Under this method, deferred income taxes are recognized for the tax consequences of temporary differences between the financial statement carrying amounts and the tax basis of the assets and liabilities. Our operations are treated as a partnership for federal and state income tax purposes, with each partner being separately taxed on its share of the taxable income. Therefore, we have excluded income taxes from these consolidated financial statements, except for the income tax provision resulting from state laws that apply to entities organized as partnerships. Our tax provision is computed as if we were a stand-alone tax paying entity. Any interest related to income taxes would be included in interest and debt expense, and penalties would be included in operating and maintenance expenses.
Net Income Per Limited Partner Unit	Net income per unit applicable to common and subordinated units (for the period subordinated units were outstanding) is computed by dividing these limited partners’ respective interests in net income attributable to the Partnership by the weighted average number of common units and subordinated units, respectively, outstanding for the period. Because we have more than one class of participating securities, we use the two-class method to calculate the net income per unit applicable to the limited partners. The classes of participating securities as of December 31, 2016 , included common units, general partner units and incentive distribution rights (IDRs). Basic and diluted net income per unit are the same because we do not have potentially dilutive instruments outstanding. Net income earned by the Partnership is allocated between the limited partners and the General Partner (including the General Partner’s IDRs) in accordance with our partnership agreement. First, earnings are allocated based on actual cash distributions made to our unitholders, including those attributable to the General Partner’s IDRs. To the extent net income attributable to the Partnership exceeds or is less than cash distributions, this difference is allocated based on the unitholders’ respective ownership percentages, after consideration of any priority allocations of earnings. When our financial statements are retrospectively adjusted after a dropdown transaction, the earnings of the acquired business, prior to the closing of the transaction, are allocated entirely to our General Partner and presented as net income (loss) attributable to Predecessors. The earnings per unit of our limited partners prior to the close of the transaction do not change as a result of the dropdown. After the closing of a dropdown transaction, the earnings of the acquired business are allocated in accordance with our partnership agreement as previously described.
New Accounting Pronouncement	Effective January 1, 2016, we early adopted the Financial Accounting Standards Board (FASB) Accounting Standards Update (ASU) No. 2015-17, “Income Taxes (Topic 740): Balance Sheet Classification of Deferred Taxes.” The new update simplified the presentation of deferred income taxes and required deferred tax liabilities and assets be classified as noncurrent in a classified statement of financial position. The classification was made at the taxpaying component level of an entity, after reflecting any offset of deferred tax liabilities, deferred tax assets and any related valuation allowances. We applied the amendments prospectively to all deferred tax liabilities and assets. In June 2014, the FASB issued ASU No. 2014-10, “Development Stage Entities (Topic 915): Elimination of Certain Financial Reporting Requirements, Including an Amendment to Variable Interest Entities (VIE) Guidance in Topic 810, Consolidation.” The new standard removed the definition of a development stage entity from the Master Glossary of the Accounting Standard Codification (ASC) and the related financial reporting requirements specific to development stage entities. This ASU is intended to reduce cost and complexity of financial reporting for entities that have not commenced planned principal operations. For financial reporting requirements other than the VIE guidance in ASC Topic 810, “Consolidation,” ASU No. 2014-10 was effective for annual and quarterly reporting periods of public entities beginning after December 15, 2014. For the financial reporting requirements related to VIEs in ASC Topic 810, “Consolidation,” ASU No. 2014-10 was effective for annual and quarterly reporting periods of public entities beginning after December 15, 2015. We adopted the provisions of this ASU related to the financial reporting requirements other than the VIE guidance effective January 1, 2015. We adopted the remaining provisions effective January 1, 2016. New Accounting Standards In January 2017, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) 2017-04, “Intangibles—Goodwill and Other—Simplifying the Test for Goodwill Impairment,” which eliminates Step 2 from the goodwill impairment test. Under the revised test, an entity should perform its annual, or interim, goodwill impairment test by comparing the fair value of a reporting unit with its carrying amount. An entity should recognize an impairment charge for the amount by which the carrying amount exceeds the reporting unit’s fair value; however, the loss recognized should not exceed the total amount of goodwill allocated to that reporting unit. Public business entities should apply the guidance in ASU No. 2017-04 for its annual or any interim goodwill impairment tests in fiscal years beginning after December 15, 2019, with early adoption permitted. We are currently evaluating the provisions of ASU No. 2017-04. In January 2017, the FASB issued ASU No. 2017-01, “Business Combinations: Clarifying the Definition of a Business,” which clarifies the definition of a business with the objective of adding guidance to assist in evaluating whether transactions should be accounted for as acquisitions of assets or businesses. The amendment provides a screen for determining when a transaction involves an acquisition of a business. If substantially all of the fair value of the gross assets acquired is concentrated in a single identifiable asset or a group of similar identifiable assets, then the transaction does not involve acquisition of a business. If the screen is not met, then the amendment requires that to be considered a business, the operation must include at a minimum an input and a substantive process that together significantly contribute to the ability to create an output. The guidance may reduce the number of transactions accounted for as business acquisitions. Public business entities should apply the guidance in ASU No. 2017-01 to annual periods beginning after December 15, 2017, including interim periods within those periods, with early adoption permitted. The amendments should be applied prospectively, and no disclosures are required at the effective date. We are currently evaluating the provisions of ASU No. 2017-01. In November 2016, the FASB issued ASU No. 2016-18, “Statement of Cash Flows (Topic 230): Restricted Cash,” which clarifies the classification and presentation of changes in restricted cash. The amendment requires that a statement of cash flows explain the change during the period in the total of cash, cash equivalents, and amounts generally described as restricted cash and restricted cash equivalents. Public business entities should apply the guidance in ASU No. 2016-18 on a retrospective basis for annual periods beginning after December 15, 2017, including interim periods within those annual periods, with early adoption permitted. We do not expect the adoption of this ASU to have a material impact on our financial statements. In August 2016, the FASB issued ASU No. 2016-15, “Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments,” which clarifies the treatment of several cash flow categories. In addition, ASU No. 2016-15 clarifies that when cash receipts and cash payments have aspects of more than one class of cash flows and cannot be separated, classification will depend on the predominant source or use. Public business entities should apply the guidance in ASU No. 2016-15 on a retrospective basis for annual periods beginning after December 15, 2017, including interim periods within those annual periods, with early adoption permitted. We are currently evaluating the provisions of ASU No. 2016-15 and assessing the impact on our financial statements. In February 2016, the FASB issued ASU No. 2016-02, “Leases (Topic 842).” In the new standard, the FASB modified its determination of whether a contract is a lease rather than whether a lease is a capital or operating lease under the previous GAAP. A contract represents a lease if a transfer of control occurs over identified PP&E for a period of time in exchange for consideration. Control over the use of the identified asset includes the right to obtain substantially all of the economic benefits from the use of the asset and the right to direct its use. The FASB continued to maintain two classifications of leases - financing and operating - which are substantially similar to capital and operating leases in the previous lease guidance. Under the new standard, recognition of assets and liabilities arising from operating leases will require recognition on the balance sheet. The effect of all leases in the statement of comprehensive income and the statement of cash flows will be largely unchanged. Lessor accounting will also be largely unchanged. Additional disclosures will be required for financing and operating leases for both lessors and lessees. Public business entities should apply the guidance in ASU No. 2016-02 for annual periods beginning after December 15, 2018, including interim periods within those annual periods. Early adoption is permitted. We are currently evaluating the provisions of ASU No. 2016-02 and assessing its impact on our financial statements. In January 2016, the FASB issued ASU No. 2016-01, “Financial Instruments-Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities,” to meet its objective of providing more decision-useful information about financial instruments. The majority of this ASU’s provisions amend only the presentation or disclosures of financial instruments; however, one provision will also affect net income. Equity investments carried under the cost method or lower of cost or fair value method of accounting, in accordance with current GAAP, will have to be carried at fair value upon adoption of ASU No. 2016-01, with changes in fair value recorded in net income. For equity investments that do not have readily determinable fair values, a company may elect to carry such investments at cost less impairments, if any, adjusted up or down for price changes in similar financial instruments issued by the investee, when and if observed. Public business entities should apply the guidance in ASU No. 2016-01 for annual periods beginning after December 15, 2017, and interim periods within those annual periods, with early adoption prohibited. We are currently evaluating the provisions of ASU No. 2016-01. Our initial review indicates that ASU No. 2016-01 will have a limited impact on our financial statements. In May 2014, the FASB issued ASU No. 2014-09, “Revenue from Contracts with Customers (Topic 606).” The new standard converged guidance on recognizing revenues in contracts with customers under GAAP and International Financial Reporting Standards. This ASU is intended to improve comparability of revenue recognition practices across entities, industries, jurisdictions and capital markets and expand disclosure requirements. In August 2015, the FASB issued ASU No. 2015-14, “Revenue from Contracts with Customers (Topic 606): Deferral of the Effective Date.” The amendment in this ASU defers the effective date of ASU No. 2014-09 for all entities for one year. Public business entities should apply the guidance in ASU No. 2014-09 to annual reporting periods beginning after December 15, 2017, including interim reporting periods within that reporting period. Earlier adoption is permitted only as of annual reporting periods beginning after December 31, 2016, including interim reporting periods within that reporting period. Retrospective or modified retrospective application of the accounting standard is required. ASU No. 2014-09 was further amended in March 2016 by the provisions of ASU No. 2016-08, “Principal versus Agent Considerations (Reporting Revenue Gross versus Net),” in April 2016 by the provisions of ASU No. 2016-10, “Identifying Performance Obligations and Licensing,” in May 2016 by the provisions of ASU No. 2016-12, “Narrow-Scope Improvements and Practical Expedients,” and in December 2016 by the provisions of ASU No. 2016-20, “Technical Corrections to Topic 606, revenue from Contracts with Customers.” As part of our assessment work-to-date, we have formed an implementation work team, completed training on the new ASU’s revenue recognition model and are continuing our contract review and documentation. Our expectation is to adopt the standard on January 1, 2018, using the modified retrospective application. Our evaluation of this standard is ongoing.

Acquisitions (Tables)

Acquisitions (Tables)	12 Months Ended
	Dec. 31, 2016
Business Combinations [Abstract]
Business Acquisition, Information	Millions of Dollars December 31, 2016 Consolidated Statement of Income Phillips 66 Acquired Fractionator Assets Predecessor Acquired Eagle Assets Predecessor Consolidated Revenues and Other Income Operating revenues—related parties $ 474 24 229 727 Operating revenues—third parties 14 — 17 31 Equity in earnings of affiliates 114 — — 114 Other income 1 — — 1 Total revenues and other income 603 24 246 873 Costs and Expenses Operating and maintenance expenses 120 5 91 216 Depreciation 62 5 29 96 General and administrative expenses 40 1 24 65 Taxes other than income taxes 19 2 12 33 Interest and debt expense 52 — — 52 Other expenses — — 1 1 Total costs and expenses 293 13 157 463 Income before income taxes 310 11 89 410 Provision for income taxes 2 — — 2 Net income 308 11 89 408 Less: Net income attributable to noncontrolling interests 7 (7 ) — — Less: Net income attributable to Predecessors — 18 89 107 Net income attributable to the Partnership $ 301 — — 301 Millions of Dollars December 31, 2015 Consolidated Statement of Income Phillips 66 (As Previously Reported) Acquired Fractionator Assets Predecessor Acquired Eagle Assets Predecessor Consolidated (As Currently Reported) Revenues and Other Income Operating revenues—related parties $ 260 30 292 582 Operating revenues—third parties 5 — 25 30 Equity in earnings of affiliates 77 — — 77 Other income 6 — — 6 Total revenues and other income 348 30 317 695 Costs and Expenses Operating and maintenance expenses 62 23 118 203 Depreciation 22 4 35 61 General and administrative expenses 27 5 31 63 Taxes other than income taxes 9 3 15 27 Interest and debt expense 34 — — 34 Other expenses — — 1 1 Total costs and expenses 154 35 200 389 Income (loss) before income taxes 194 (5 ) 117 306 Provision for income taxes — — — — Net income (loss) 194 (5 ) 117 306 Less: Net income (loss) attributable to Predecessors — (5 ) 117 112 Net income attributable to the Partnership $ 194 — — 194 Millions of Dollars December 31, 2014 Consolidated Statement of Income Phillips 66 (As Previously Reported) Acquired Fractionator Assets Predecessor Acquired Eagle Assets Predecessor Consolidated (As Currently Reported) Revenues and Other Income Operating revenues—related parties $ 223 15 293 531 Operating revenues—third parties 6 — 18 24 Equity in earnings of affiliates — — — — Other income — — — — Total revenues and other income 229 15 311 555 Costs and Expenses Operating and maintenance expenses 53 2 129 184 Depreciation 16 1 29 46 General and administrative expenses 26 2 29 57 Taxes other than income taxes 4 — 12 16 Interest and debt expense 5 — — 5 Other expenses — — 1 1 Total costs and expenses 104 5 200 309 Income before income taxes 125 10 111 246 Provision for income taxes 1 — — 1 Net income 124 10 111 245 Less: Net income attributable to Predecessors 8 10 111 129 Net income attributable to the Partnership $ 116 — — 116 Millions of Dollars December 31, 2015 Consolidated Balance Sheet Phillips 66 (As Previously Reported) Acquired Fractionator Assets Predecessor Acquired Eagle Assets Predecessor Consolidated (As Currently Reported) Assets Cash and cash equivalents $ 48 2 — 50 Accounts receivable—related parties 22 — — 22 Accounts receivable—third parties 3 — 4 7 Materials and supplies 2 2 4 8 Prepaid expenses 2 — — 2 Other current assets — 2 — 2 Total Current Assets 77 6 8 91 Equity investments 945 — — 945 Net properties, plants and equipment 492 1,152 793 2,437 Goodwill 3 — 179 182 Deferred rentals—related parties 6 — — 6 Other assets 1 — — 1 Total Assets $ 1,524 1,158 980 3,662 Liabilities Accounts payable—related parties $ 4 — — 4 Accounts payable—third parties 9 58 15 82 Payroll and benefits payable — 1 2 3 Accrued property and other taxes 5 3 6 14 Accrued interest 15 7 — 22 Deferred revenues—related parties 4 — — 4 Other current liabilities 1 — 3 4 Total Current Liabilities 38 69 26 133 Notes payable—related party — 964 — 964 Long-term debt 1,091 — — 1,091 Asset retirement obligations 3 1 7 11 Accrued environmental costs 1 — 3 4 Deferred income taxes — — 1 1 Deferred revenues—related parties—long-term 1 10 3 14 Total Liabilities 1,134 1,044 40 2,218 Equity Net investment—Predecessors — 114 940 1,054 Common unitholders—public (2015—24,138,750 units issued and outstanding; 2014—18,888,750 units issued and outstanding) 809 — — 809 Common unitholder—Phillips 66 (2015—58,349,042 units issued and outstanding; 2014—20,938,948 units issued and outstanding) 233 — — 233 General partner—Phillips 66 (2015—1,683,425 units issued and outstanding; (650 ) — — (650 ) Accumulated other comprehensive loss (2 ) — — (2 ) Total Equity 390 114 940 1,444 Total Liabilities and Equity $ 1,524 1,158 980 3,662 Millions of Dollars December 31, 2016 Consolidated Statement of Cash Flows Phillips 66 Acquired Fractionator Assets Predecessor Acquired Eagle Assets Predecessor Consolidated Cash Flows From Operating Activities Net income $ 308 11 89 408 Adjustments to reconcile net income to net cash provided by operating activities Depreciation 62 5 29 96 Deferred rentals 1 — — 1 Accrued environmental costs 1 — — 1 Unfunded equity losses 1 — — 1 Deferred revenues—long-term 9 — — 9 Other — 6 (2 ) 4 Working capital adjustments — Decrease (increase) in accounts receivable (58 ) — — (58 ) Decrease (increase) in materials and supplies (2 ) — — (2 ) Decrease (increase) in prepaid expenses and other current assets (2 ) — — (2 ) Increase (decrease) in accounts payable 16 1 2 19 Increase (decrease) in accrued interest 4 — — 4 Increase (decrease) in deferred revenues 10 — — 10 Increase (decrease) in other accruals (3 ) (1 ) 5 1 Net Cash Provided by Operating Activities 347 22 123 492 Cash Flows From Investing Activities Eagle acquisition (990 ) — — (990 ) Cash capital expenditures and investments (469 ) (36 ) (79 ) (584 ) Return of investment from equity affiliates 16 — — 16 Net Cash Used in Investing Activities (1,443 ) (36 ) (79 ) (1,558 ) Cash Flows From Financing Activities Net contributions from (to) Phillips 66 to (from) Predecessors — 89 (44 ) 45 Acquisition of noncontrolling interest in Sweeny Frac LLC (656 ) — — (656 ) Issuance of debt 2,090 28 — 2,118 Repayment of debt (991 ) (105 ) — (1,096 ) Issuance of common units 983 — — 983 Offering costs (12 ) — — (12 ) Debt issuance costs (10 ) — — (10 ) Distributions to General Partner associated with acquisitions (119 ) — — (119 ) Quarterly distributions to common unitholders—public (64 ) — — (64 ) Quarterly distributions to common unitholder—Phillips 66 (119 ) — — (119 ) Quarterly distributions to General Partner—Phillips 66 (76 ) — — (76 ) Other cash contributions from Phillips 66 24 — — 24 Net Cash Provided by (Used in) Financing Activities 1,050 12 (44 ) 1,018 Net Change in Cash and Cash Equivalents (46 ) (2 ) — (48 ) Cash and cash equivalents at beginning of period 48 2 — 50 Cash and Cash Equivalents at End of Period $ 2 — — 2 Millions of Dollars December 31, 2015 Consolidated Statement of Cash Flows Phillips 66 (As Previously Reported) Acquired Fractionator Assets Predecessor Acquired Eagle Assets Predecessor Consolidated (As Currently Reported) Cash Flows From Operating Activities Net income (loss) $ 194 (5 ) 117 306 Adjustments to reconcile net income (loss) to net cash provided by operating activities Depreciation 22 4 35 61 Accrued environmental costs 1 — — 1 Deferred revenues — 11 — 11 Other 3 — (2 ) 1 Working capital adjustments Decrease (increase) in accounts receivable (2 ) — 3 1 Decrease (increase) in materials and supplies — (2 ) — (2 ) Decrease (increase) in prepaid expenses and other current assets — (2 ) — (2 ) Increase (decrease) in accounts payable (8 ) 5 (6 ) (9 ) Increase (decrease) in accrued interest 13 — — 13 Increase (decrease) in deferred revenues 4 — — 4 Increase (decrease) in other accruals 3 3 1 7 Net Cash Provided by Operating Activities 230 14 148 392 Cash Flows From Investing Activities Sand Hills/Southern Hills/Explorer equity investment acquisition (734 ) — — (734 ) Cash capital expenditures and investments (205 ) (668 ) (75 ) (948 ) Return of investment from equity affiliates 12 — — 12 Other (8 ) 8 — — Net Cash Used in Investing Activities (935 ) (660 ) (75 ) (1,670 ) Cash Flows From Financing Activities Net contributions from (to) Phillips 66 to (from) Predecessors — 27 (73 ) (46 ) Issuance of debt 1,169 612 — 1,781 Repayment of debt (499 ) — — (499 ) Issuance of common units 396 — — 396 Offering costs (12 ) — — (12 ) Debt issuance costs (10 ) — — (10 ) Distributions to General Partner associated with acquisitions (146 ) — — (146 ) Quarterly distributions to common unitholders—public (35 ) — — (35 ) Quarterly distributions to common unitholder—Phillips 66 (63 ) — — (63 ) Quarterly distributions to subordinated unitholder—Phillips 66 (25 ) — — (25 ) Quarterly distributions to General Partner—Phillips 66 (30 ) — — (30 ) Net Cash Provided by (Used in) Financing Activities 745 639 (73 ) 1,311 Net Change in Cash and Cash Equivalents 40 (7 ) — 33 Cash and cash equivalents at beginning of period 8 9 — 17 Cash and Cash Equivalents at End of Period $ 48 2 — 50 Millions of Dollars December 31, 2014 Consolidated Statement of Cash Flows Phillips 66 (As Previously Reported) Acquired Fractionator Assets Predecessor Acquired Eagle Assets Predecessor Consolidated (As Currently Reported) Cash Flows From Operating Activities Net income $ 124 10 111 245 Adjustments to reconcile net income to net cash provided by operating activities Depreciation 16 1 29 46 Deferred revenues—long-term — 1 1 2 Other 1 (1 ) — — Working capital adjustments Decrease (increase) in accounts receivable (11 ) — (3 ) (14 ) Increase (decrease) in accounts payable 9 — 3 12 Increase (decrease) in accrued interest 2 — — 2 Increase (decrease) in deferred revenues 1 — — 1 Increase (decrease) in other accruals — 1 1 2 Net Cash Provided by Operating Activities 142 12 142 296 Cash Flows From Investing Activities Gold Line/Medford acquisition (138 ) — — (138 ) Bayway/Ferndale/Cross-Channel acquisition (28 ) — — (28 ) Cash capital expenditures and investments (157 ) (384 ) (118 ) (659 ) Other 8 (8 ) — — Net Cash Used in Investing Activities (315 ) (392 ) (118 ) (825 ) Cash Flows From Financing Activities Net contributions from (to) Phillips 66 to (from) Predecessors 81 37 (24 ) 94 Project prefunding from Phillips 66 2 — — 2 Issuance of debt 28 352 — 380 Repayment of debt (10 ) — — (10 ) Debt issuance costs (1 ) — — (1 ) Distributions to General Partner associated with acquisitions (262 ) — — (262 ) Quarterly distributions to common unitholders—public (21 ) — — (21 ) Quarterly distributions to common unitholder—Phillips 66 (22 ) — — (22 ) Quarterly distributions to subordinated unitholder—Phillips 66 (39 ) — — (39 ) Quarterly distributions to General Partner—Phillips 66 (4 ) — — (4 ) Other cash contributions from Phillips 66 4 — — 4 Net Cash Provided by (Used in) Financing Activities (244 ) 389 (24 ) 121 Net Change in Cash and Cash Equivalents (417 ) 9 — (408 ) Cash and cash equivalents at beginning of period 425 — — 425 Cash and Cash Equivalents at End of Period $ 8 9 — 17

Equity Investments (Tables)

Equity Investments (Tables)	12 Months Ended
	Dec. 31, 2016
Equity Method Investments and Joint Ventures [Abstract]
Schedule of Equity Investments	The following table summarizes our equity investments at December 31, 2016 and 2015 : Millions of Dollars Percentage Ownership Carrying Value 2016 2015 Sand Hills 33.34 % $ 445 431 Southern Hills 33.34 212 213 Explorer* 21.94 126 102 Phillips 66 Partners Terminal 70.00 72 77 Paradigm Pipeline 50.00 117 52 Bayou Bridge Pipeline 40.00 115 70 STACK Pipeline 50.00 55 — Total equity investments $ 1,142 945
Schedule Of Earnings From Equity Investments	Earnings from our equity investments for the years ended December 31, 2016 and 2015 were as follows: Millions of Dollars 2016 2015 Sand Hills $ 62 48 Southern Hills 26 14 Explorer 23 15 Phillips 66 Partners Terminal — — Paradigm Pipeline (2 ) — Bayou Bridge Pipeline 3 — STACK Pipeline 2 — Total equity in earnings of affiliates $ 114 77
Summary of Financial Information	Summarized 100 percent financial information, as of acquisition date, for all equity investments, combined, was as follows: Millions of Dollars 2016 2015 2014 Revenues $ 840 596 — Income before income taxes 494 322 — Net income 408 321 — Current assets 243 269 — Noncurrent assets 3,437 3,106 — Current liabilities 396 180 — Noncurrent liabilities 231 446 —

Properties, Plants and Equipm33

Properties, Plants and Equipment (Tables)	12 Months Ended
	Dec. 31, 2016
Property, Plant and Equipment [Abstract]
Summary of Property, Plant and Equipment	Our investment in PP&E, with the associated accumulated depreciation, at December 31 was: Estimated Useful Lives Millions of Dollars 2016 2015* Land $ 19 39 Buildings and improvements 3 to 30 years 88 51 Pipelines and related assets † 10 to 45 years 1,335 1,097 Terminals and related assets † 25 to 45 years 610 547 Rail racks and related assets † 33 years 137 136 Fractionator and related assets † 25 years 615 626 Caverns and related assets † 25 to 45 years 569 277 Construction-in-progress 27 296 Gross PP&E 3,400 3,069 Less: Accumulated depreciation 725 632 Net PP&E $ 2,675 2,437 *Prior-period financial information has been retrospectively adjusted for acquisitions of businesses under common control. † Assets for which we are the lessor. See Note 14—Leases .

Goodwill (Tables)

Goodwill (Tables)	12 Months Ended
	Dec. 31, 2016
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Goodwill	The carrying amount of goodwill was as follows: Millions of Dollars 2016 2015* Beginning balance January 1 $ 182 182 Goodwill assigned to acquisitions 3 — Ending balance December 31 $ 185 182 *Prior-period financial information has been retrospectively adjusted for acquisitions of businesses under common control.

Assets Retirement Obligations35

Assets Retirement Obligations and Accrued Environmental Costs (Tables)	12 Months Ended
	Dec. 31, 2016
Assets Retirement Obligations and Accrued Environmental Costs [Abstract]
Schedule of Asset Retirement Obligations and Accrual for Environmental Costs	Asset retirement obligations and accrued environmental costs at December 31 were: Millions of Dollars 2016 2015* Asset retirement obligations $ 9 11 Accrued environmental costs 2 4 Total asset retirement obligations and accrued environmental costs 11 15 Asset retirement obligations and accrued environmental costs due within one year — — Long-term asset retirement obligations and accrued environmental costs $ 11 15 *Prior-period financial information has been retrospectively adjusted for acquisitions of businesses under common control.
Schedule of Change in Asset Retirement Obligation	During 2016 and 2015 , our overall asset retirement obligations changed as follows: Millions of Dollars 2016 2015* Balance at January 1 $ 11 11 Accretion of discount — 1 New obligations — — Changes in estimates of existing obligations (2 ) (1 ) Balance at December 31 $ 9 11 *Prior-period financial information has been retrospectively adjusted for acquisitions of businesses under common control.

Net Income Per Limited Partne36

Net Income Per Limited Partner Unit (Tables)	12 Months Ended
	Dec. 31, 2016
Partners' Capital Notes [Abstract]
Schedule of Distributions Declared, Partners Interest in Partnership Net Income and Net Income per Unit by Class	Millions of Dollars 2016 2015 2014 Net income attributable to the Partnership $ 301 194 116 Less: General partner’s distributions declared (including IDRs)* 91 39 8 Limited partners’ distributions declared on common units* 205 123 48 Limited partner’s distributions declared on subordinated units* — 13 43 Distributions less than net income attributable to the Partnership $ 5 19 17 *Distributions declared are attributable to the indicated periods. 2016 General Partner (including IDRs) Limited Partners’ Common Units Limited Partner’s Subordinated Units Total Net income attributable to the Partnership (millions): Distributions declared $ 91 205 — 296 Distributions less than net income attributable to the Partnership 1 4 — 5 Net income attributable to the Partnership $ 92 209 — 301 Weighted average units outstanding: Basic 1,920,435 95,239,901 — 97,160,336 Diluted 1,920,435 95,239,901 — 97,160,336 Net income per limited partner unit (dollars): Basic $ 2.20 — Diluted 2.20 — 2015 General Partner (including IDRs) Limited Partners’ Common Units Limited Partner’s Subordinated Units Total Net income attributable to the Partnership (millions): Distributions declared $ 39 123 13 175 Distributions less than net income attributable to the Partnership 2 14 3 19 Net income attributable to the Partnership $ 41 137 16 194 Weighted average units outstanding: Basic 1,649,169 68,173,891 12,736,051 82,559,111 Diluted 1,649,169 68,173,891 12,736,051 82,559,111 Net income per limited partner unit (dollars): Basic $ 2.02 1.24 Diluted 2.02 1.24 2014 General Partner (including IDRs) Limited Partners’ Common Units Limited Partner’s Subordinated Units Total Net income attributable to the Partnership (millions): Distributions declared $ 8 48 43 99 Distributions less than net income attributable to the Partnership — 9 8 17 Net income attributable to the Partnership $ 8 57 51 116 Weighted average units outstanding: Basic 1,499,704 38,268,371 35,217,112 74,985,187 Diluted 1,499,704 38,268,371 35,217,112 74,985,187 Net income per limited partner unit (dollars): Basic $ 1.48 1.45 Diluted 1.48 1.45

Debt (Tables)

Debt (Tables)	12 Months Ended
	Dec. 31, 2016
Debt Disclosure [Abstract]
Schedule of Debt	Debt at December 31, 2016 and 2015 was: Millions of Dollars December 31, 2016 Fair Value Hierarchy Total Fair Value Balance Sheet Level 1 Level 2* Level 3 2.646% Senior Notes due 2020 $ — 298 — 298 300 3.605% Senior Notes due 2025 — 490 — 490 500 3.550% Senior Notes due 2026 — 483 — 483 500 4.680% Senior Notes due 2045 — 277 — 277 300 4.900% Senior Notes due 2046 — 599 — 599 625 Revolving credit facility at 1.98% at year-end 2016 — 210 — 210 210 Debt at face value $ — 2,357 — 2,357 2,435 Net unamortized discounts and debt issuance costs (24 ) Total debt $ 2,411 *The fair value was estimated using quoted market prices of comparable instruments. Millions of Dollars December 31, 2015 Fair Value Hierarchy Total Fair Value Balance Sheet Level 1 Level 2* Level 3 2.646% Senior Notes due 2020 $ — 282 — 282 300 3.605% Senior Notes due 2025 — 432 — 432 500 4.680% Senior Notes due 2045 — 225 — 225 300 Notes payable to Phillips 66 due 2020 at 3.0% — 961 — 961 964 Debt at face value $ — 1,900 — 1,900 2,064 Net unamortized discounts and debt issuance costs (9 ) Total debt $ 2,055 *The fair value was estimated using quoted market prices of comparable instruments.

Leases (Tables)

Leases (Tables)	12 Months Ended
	Dec. 31, 2016
Leases [Abstract]
Schedule of Estimated Future Minimum Rental Income	As of December 31, 2016 , future minimum payments to be received related to these agreements were estimated to be: Millions of Dollars 2017 $ 556 2018 538 2019 506 2020 502 2021 494 Remaining years 1,848 Total $ 4,444
Schedule of Future Minimum Payments for Operating Leases	The future minimum lease payments as of December 31, 2016 , for the operating lease obligations were: Millions of Dollars 2017 $ 3 2018 3 2019 3 2020 3 2021 3 Remaining years 95 Total minimum lease payments $ 110

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Summary of Income Taxes	Income taxes charged to income were: Millions of Dollars 2016 2015* 2014* Current $ 2 — 1 Deferred — — — Total $ 2 — 1 *Prior-period financial information has been retrospectively adjusted for acquisitions of businesses under common control.

Cash Flow Information (Tables)

Cash Flow Information (Tables)	12 Months Ended
	Dec. 31, 2016
Cash Flow Information [Abstract]
Summary of Capital Expenditures, Noncash Investing and Financing Activities and Cash Payments	Our capital expenditures and investments consisted of: Millions of Dollars 2016 2015 2014 Capital Expenditures and Investments Capital expenditures attributable to Predecessors* $ 96 690 707 Capital expenditures and investments attributable to the Partnership 461 205 66 Total capital expenditures and investments* $ 557 895 773 *Prior-period financial information has been retrospectively adjusted for acquisitions of businesses under common control. Millions of Dollars 2016 2015* 2014* Capital Expenditures and Investments Cash capital expenditures and investments $ 584 948 659 Change in capital expenditure accruals (27 ) (53 ) 114 Total capital expenditures and investments $ 557 895 773 *Prior-period financial information has been retrospectively adjusted for acquisitions of businesses under common control. Millions of Dollars 2016 2015 2014 Other Noncash Investing and Financing Activities Contributions of net assets into joint ventures $ — 43 — Certain liabilities of acquired assets retained by Phillips 66 (1) 50 — 15 Cash Payments Interest and debt expense $ 40 18 3 (1) Certain liabilities of the Acquired Assets were retained by Phillips 66, pursuant to the terms of various agreements under which we acquired assets from Phillips 66 since the Offering. See Note 13—Contingencies for additional information on these excluded liabilities associated with the Acquired Assets.

Other Financial Information (Ta

Other Financial Information (Tables)	12 Months Ended
	Dec. 31, 2016
Other Income and Expenses [Abstract]
Other Financial Information	Millions of Dollars 2016 2015* 2014* Interest and Debt Expense Incurred Debt $ 56 65 12 Other 1 1 — 57 66 12 Capitalized (5 ) (32 ) (7 ) Expensed $ 52 34 5 Other Income Co-venturer contractual make-whole payments $ 1 6 — Total other income $ 1 6 — *Prior-period financial information has been retrospectively adjusted for acquisitions of businesses under common control.

Related Party Transactions (Tab

Related Party Transactions (Tables)	12 Months Ended
	Dec. 31, 2016
Related Party Transactions [Abstract]
Summary of Related Party Charges	Significant related party transactions included in operating and maintenance expenses, general and administrative expenses and interest and debt expense were: Millions of Dollars 2016 2015* 2014* Operating and maintenance expenses $ 122 95 77 General and administrative expenses 56 58 52 Interest and debt expense 3 2 5 Total $ 181 155 134 *Prior-period financial information has been retrospectively adjusted for acquisitions of businesses under common control.

Selected Quarterly Financial 43

Selected Quarterly Financial Data (Unaudited) (Tables)	12 Months Ended
	Dec. 31, 2016
Selected Quarterly Financial Information [Abstract]
Selected Quarterly Financial Data (Unaudited)	Millions of Dollars Per Common Unit Total Revenues Income Before Income Taxes Net Income Net Income Attributable to the Partnership Limited Partners’ Interest in Net Income Attributable to the Partnership Net Income Attributable to the Partnership Basic and Diluted 2016 First $ 204 94 94 52 36 0.44 Second 219 101 100 68 47 0.51 Third 222 112 112 83 57 0.57 Fourth 228 103 102 98 69 0.65 2015* First $ 150 61 61 35 29 0.39 Second 168 72 72 42 33 0.50 Third 174 78 78 53 41 0.50 Fourth 203 95 95 64 50 0.61 *Prior-period financial information has been retrospectively adjusted for acquisitions of businesses under common control.

Business and Basis of Present44

Business and Basis of Presentation (Narrative) (Details) - Phillips 66 - refinery	Dec. 31, 2016	Aug. 01, 2015
Variable Interest Entity [Line Items]
Entities under common control, ownership percentage transferred, wholly owned		10000.00%
Number of refineries most of our assets are connected to	9

Summary of Significant Accoun45

Summary of Significant Accounting Policies (Details)	12 Months Ended
	Dec. 31, 2016unit
Accounting Policies [Abstract]
Number of reporting units	1

Acquisitions (Narrative) (Detai

Acquisitions (Narrative) (Details) $ in Millions

Oct. 14, 2016USD ($)refineryshares

Aug. 09, 2016

May 10, 2016USD ($)shares

Mar. 01, 2016USD ($)shares

Dec. 01, 2015

Mar. 02, 2015

Dec. 01, 2014USD ($)shares

Nov. 30, 2014USD ($)

Mar. 01, 2014USD ($)shares

Feb. 28, 2014USD ($)

Dec. 31, 2014USD ($)shares

May 10, 2016USD ($)

Dec. 31, 2016USD ($)shares

Dec. 31, 2015shares

Dec. 31, 2014shares

Aug. 03, 2016

Business Acquisition [Line Items]

Units issued associated with acquisitions (in shares) | shares

6,201,943

2,345,339

4,704,221

General partner interest, percent

2.00%

2.00%

2.00%

2.00%

2.00%

2.00%

2.00%

2.00%

Phillips 66 | Palermo Rail Terminal Project Interest | General Partner Units

Business Acquisition [Line Items]

Units issued associated with acquisitions (in shares) | shares

268

Phillips 66 | Phillips 66

Business Acquisition [Line Items]

Historical carrying value of assets transferred

$ 71

Phillips 66 | Phillips 66 | Bayway Ferndale Cross Channel Assets

Business Acquisition [Line Items]

Cash consideration

$ 7

Phillips 66 | Phillips 66 | Palermo Rail Terminal Project

Business Acquisition [Line Items]

Cash consideration

$ 27

Cash consideration for assets

28

Historical carrying value of assets transferred

42

Phillips 66 | Phillips 66 | Palermo Rail Terminal Project Interest

Business Acquisition [Line Items]

Total consideration

8

Assumption of a note payable to a subsidiary of Phillips 66

8

Phillips 66 | Phillips 66 | Eagle Ford Gathering System Project

Business Acquisition [Line Items]

Total consideration

12

Assumption of a note payable to a subsidiary of Phillips 66

6

Cash consideration

6

Cash consideration for assets

$ 12

Phillips 66 | Phillips 66 | Common Units | Palermo Rail Terminal Project Interest

Business Acquisition [Line Items]

Units issued associated with acquisitions (in shares) | shares

13,129

River Parish Acquisition | Phillips 66 | Phillips 66

Business Acquisition [Line Items]

Business combination, plant, property and equipment

$ 183

Sweeny Fractionator Acquisition | Phillips 66 | General Partner Units

Business Acquisition [Line Items]

Units issued associated with acquisitions (in shares) | shares

8,425

Sweeny Fractionator Acquisition | Phillips 66 | Phillips 66

Business Acquisition [Line Items]

Total consideration

$ 236

Entities under common control, percentage of voting interests received

25.00%

Assumption of a note payable to a subsidiary of Phillips 66

$ 212

Transaction costs

1

Historical carrying value of assets transferred

$ 283

Sweeny Fractionator Acquisition | Phillips 66 | Phillips 66 | Common Units

Business Acquisition [Line Items]

Units issued associated with acquisitions (in shares) | shares

412,823

Sweeny Frac Remaining Seventy Five Percent And Standish Pipeline Acquisition | Phillips 66 | General Partner Units

Business Acquisition [Line Items]

Units issued associated with acquisitions (in shares) | shares

286,753

Sweeny Frac Remaining Seventy Five Percent And Standish Pipeline Acquisition | Phillips 66 | Phillips 66

Business Acquisition [Line Items]

Total consideration

$ 775

Assumption of a note payable to a subsidiary of Phillips 66

675

Transaction costs

1

Historical carrying value of assets transferred

$ 871

Sweeny Frac Remaining Seventy Five Percent And Standish Pipeline Acquisition | Phillips 66 | Phillips 66 | Standish Pipeline

Business Acquisition [Line Items]

Entities under common control, percentage of voting interests received

100.00%

100.00%

Sweeny Frac Remaining Seventy Five Percent And Standish Pipeline Acquisition | Phillips 66 | Phillips 66 | Common Units

Business Acquisition [Line Items]

Units issued associated with acquisitions (in shares) | shares

1,400,922

Sweeny Frac Remaining Seventy Five Percent And Standish Pipeline Acquisition | Phillips 66 Sweeny Frac LLC | Phillips 66 | Phillips 66

Business Acquisition [Line Items]

Entities under common control, percentage of voting interests received

75.00%

75.00%

Eagle Acquisition | Phillips 66 | General Partner Units

Business Acquisition [Line Items]

Units issued associated with acquisitions (in shares) | shares

208,783

Eagle Acquisition | Phillips 66 | Common Units

Business Acquisition [Line Items]

Units issued associated with acquisitions (in shares) | shares

3,884,237

Eagle Acquisition | Phillips 66 | Phillips 66

Business Acquisition [Line Items]

Total consideration

$ 1,305

Number of refineries most of our assets are connected to | refinery

4

Cash consideration

$ 1,109

Historical carrying value of assets transferred

$ 990

$ 1,109

Standish And Sweeny Fractionator Acquisition | Phillips 66 | Phillips 66

Business Acquisition [Line Items]

Historical carrying value of assets transferred

$ 1,154

Gold Line/Medford acquisition | Phillips 66 | General Partner Units

Business Acquisition [Line Items]

Units issued associated with acquisitions (in shares) | shares

72,053

Gold Line/Medford acquisition | Phillips 66 | Phillips 66

Business Acquisition [Line Items]

Total consideration

$ 700

Assumption of a note payable to a subsidiary of Phillips 66

160

Transaction costs

2

Cash consideration

400

Aggregate fair value of units issued for assets acquired

$ 140

Historical carrying value of assets transferred

$ 138

Gold Line/Medford acquisition | Phillips 66 | Phillips 66 | Common Units

Business Acquisition [Line Items]

Units issued associated with acquisitions (in shares) | shares

3,530,595

Bayway Ferndale Cross-Channel acquisition | Phillips 66

Business Acquisition [Line Items]

Aggregate fair value of units issued for assets acquired

$ 68

Bayway Ferndale Cross-Channel acquisition | Phillips 66 | General Partner Units

Business Acquisition [Line Items]

Units issued associated with acquisitions (in shares) | shares

21,764

Bayway Ferndale Cross-Channel acquisition | Phillips 66 | Phillips 66

Business Acquisition [Line Items]

Total consideration

$ 340

Assumption of a note payable to a subsidiary of Phillips 66

244

Transaction costs

1

Cash consideration

28

$ 28

Cash consideration for assets

$ 35

Bayway Ferndale Cross-Channel acquisition | Phillips 66 | Phillips 66 | Common Units

Business Acquisition [Line Items]

Units issued associated with acquisitions (in shares) | shares

1,066,412

Bayway And Ferndale Rail Racks | Phillips 66 | Phillips 66

Business Acquisition [Line Items]

Historical carrying value of assets transferred

$ 143

STACK Pipeline

Business Acquisition [Line Items]

Percentage ownership

50.00%

STACK Pipeline | Plains All American Pipeline, L.P.

Business Acquisition [Line Items]

Percentage ownership

50.00%

50.00%

Explorer

Business Acquisition [Line Items]

Percentage ownership

21.94%

21.94%

19.46%

Equity method investment ownership percentage acquired

2.48%

Acquisitions (Statement of Inco

Acquisitions (Statement of Income) (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015		Dec. 31, 2014
Revenues and Other Income
Operating revenues—related parties									$ 727	$ 582	[1]	$ 531	[1]
Operating revenues—third parties									31	30	[1]	24	[1]
Equity in earnings of affiliates									114	77	[1]	0	[1]
Other income									1	6	[1]	0	[1]
Total revenues and other income									873	695	[1]	555	[1]
Costs and Expenses
Operating and maintenance expenses									216	203	[1]	184	[1]
Depreciation									96	61	[1],[2]	46	[1],[2]
General and administrative expenses									65	63	[1]	57	[1]
Taxes other than income taxes									33	27	[1]	16	[1]
Interest and debt expense									52	34	[1]	5	[1]
Other expenses									1	1	[1]	1	[1]
Total costs and expenses									463	389	[1]	309	[1]
Income before income taxes	$ 103	$ 112	$ 101	$ 94	$ 95	$ 78	$ 72	$ 61	410	306	[1]	246	[1]
Provision for income taxes									2	0	[1]	1	[1]
Net income	102	112	100	94	95	78	72	61	408	306	[1],[3]	245	[1],[3]
Less: Net income attributable to noncontrolling interests									0
Less: Net income attributable to Predecessors									107	112	[1]	129	[1]
Net income attributable to the Partnership	$ 98	$ 83	$ 68	$ 52	$ 64	$ 53	$ 42	$ 35	301	194	[1]	116	[1]
Scenario, Previously Reported
Revenues and Other Income
Operating revenues—related parties									474	260		223
Operating revenues—third parties									14	5		6
Equity in earnings of affiliates									114	77		0
Other income									1	6		0
Total revenues and other income									603	348		229
Costs and Expenses
Operating and maintenance expenses									120	62		53
Depreciation									62	22		16
General and administrative expenses									40	27		26
Taxes other than income taxes									19	9		4
Interest and debt expense									52	34		5
Other expenses									0	0		0
Total costs and expenses									293	154		104
Income before income taxes									310	194		125
Provision for income taxes									2	0		1
Net income									308	194		124
Less: Net income attributable to noncontrolling interests									7
Less: Net income attributable to Predecessors									0	0		8
Net income attributable to the Partnership									301	194		116
Phillips 66 | Phillips 66 | Scenario, Adjustment | Standish And Sweeny Fractionator Acquisition
Revenues and Other Income
Operating revenues—related parties									24	30		15
Operating revenues—third parties									0	0		0
Equity in earnings of affiliates									0	0		0
Other income									0	0		0
Total revenues and other income									24	30		15
Costs and Expenses
Operating and maintenance expenses									5	23		2
Depreciation									5	4		1
General and administrative expenses									1	5		2
Taxes other than income taxes									2	3		0
Interest and debt expense									0	0		0
Other expenses									0	0		0
Total costs and expenses									13	35		5
Income before income taxes									11	(5)		10
Provision for income taxes									0	0		0
Net income									11	(5)		10
Less: Net income attributable to noncontrolling interests									(7)
Less: Net income attributable to Predecessors									18	(5)		10
Net income attributable to the Partnership									0	0		0
Phillips 66 | Phillips 66 | Scenario, Adjustment | Eagle Acquisition
Revenues and Other Income
Operating revenues—related parties									229	292		293
Operating revenues—third parties									17	25		18
Equity in earnings of affiliates									0	0		0
Other income									0	0		0
Total revenues and other income									246	317		311
Costs and Expenses
Operating and maintenance expenses									91	118		129
Depreciation									29	35		29
General and administrative expenses									24	31		29
Taxes other than income taxes									12	15		12
Interest and debt expense									0	0		0
Other expenses									1	1		1
Total costs and expenses									157	200		200
Income before income taxes									89	117		111
Provision for income taxes									0	0		0
Net income									89	117		111
Less: Net income attributable to noncontrolling interests									0
Less: Net income attributable to Predecessors									89	117		111
Net income attributable to the Partnership									$ 0	$ 0		$ 0
[1]	Prior-period financial information has been retrospectively adjusted for acquisitions of businesses under common control.
[2]	Prior-period financial information has been retrospectively adjusted for acquisitions of businesses under common control.
[3]	*Prior-period financial information has been retrospectively adjusted for acquisitions of businesses under common contro

Acquisitions (Balance Sheet) (D

Acquisitions (Balance Sheet) (Details) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015		Dec. 31, 2014		Dec. 31, 2013
Assets
Cash and cash equivalents	$ 2	$ 50	[1]	$ 17	[1]	$ 425	[1]
Accounts receivable—related parties	76	22	[1]
Accounts receivable—third parties	7	7	[1]
Materials and supplies	11	8	[1]
Prepaid expenses	4	2	[1]
Other current assets	0	2	[1]
Total Current Assets	100	91	[1]
Equity investments	1,142	945	[1]
Net properties, plants and equipment	2,675	2,437	[1]
Goodwill	185	182	[1]	182
Deferred rentals—related parties	5	6	[1]
Other assets	2	1	[1]
Total Assets	4,109	3,662	[1]
Liabilities
Accounts payable—related parties	12	4	[1]
Accounts payable—third parties	31	82	[1]
Payroll and benefits payable	0	3	[1]
Accrued property and other taxes	10	14	[1]
Accrued interest	26	22	[1]
Deferred revenues—related parties	14	4	[1]
Other current liabilities	3	4	[1]
Total Current Liabilities	111	133	[1]
Notes payable—related party	0	964	[1]
Long-term debt	2,396	1,091	[1]
Asset retirement obligations	9	11	[1]
Accrued environmental costs	2	4	[1]
Deferred income taxes	2	1	[1]
Deferred revenues—related parties—long-term	23	14	[1]
Total Liabilities	2,543	2,218	[1]
Equity
General partner—Phillips 66 (2016—2,187,386 units issued and outstanding; 2015—1,683,425 units issued and outstanding)	(704)	(650)	[1]
Accumulated other comprehensive loss	(1)	(2)	[1]
Total Equity	1,566	1,444	[1]	1,060		1,598
Total Liabilities and Equity	4,109	3,662	[1]
Scenario, Previously Reported
Assets
Cash and cash equivalents	2	48		8		425
Accounts receivable—related parties		22
Accounts receivable—third parties		3
Materials and supplies		2
Prepaid expenses		2
Other current assets		0
Total Current Assets		77
Equity investments		945
Net properties, plants and equipment		492
Goodwill		3
Deferred rentals—related parties		6
Other assets		1
Total Assets		1,524
Liabilities
Accounts payable—related parties		4
Accounts payable—third parties		9
Payroll and benefits payable		0
Accrued property and other taxes		5
Accrued interest		15
Deferred revenues—related parties		4
Other current liabilities		1
Total Current Liabilities		38
Notes payable—related party		0
Long-term debt		1,091
Asset retirement obligations		3
Accrued environmental costs		1
Deferred income taxes		0
Deferred revenues—related parties—long-term		1
Total Liabilities		1,134
Equity
General partner—Phillips 66 (2016—2,187,386 units issued and outstanding; 2015—1,683,425 units issued and outstanding)		(650)
Accumulated other comprehensive loss		(2)
Total Equity		390
Total Liabilities and Equity		1,524
Phillips 66
Equity
Net investment—Predecessors	0	1,054	[1]
Phillips 66 | Scenario, Previously Reported
Equity
Net investment—Predecessors		0
Common Units | Public
Equity
Unitholders	1,795	809	[1]
Total Equity	1,795	809		415		408
Common Units | Public | Scenario, Previously Reported
Equity
Unitholders		809
Common Units | Non-public | Scenario, Previously Reported
Equity
Unitholders		233
Common Units | Non-public | Phillips 66
Equity
Unitholders	476	233	[1]
Total Equity	476	233		57		49
Standish And Sweeny Fractionator Acquisition | Phillips 66 | Scenario, Adjustment
Equity
General partner—Phillips 66 (2016—2,187,386 units issued and outstanding; 2015—1,683,425 units issued and outstanding)		0
Total Equity		114
Standish And Sweeny Fractionator Acquisition | Phillips 66 | Phillips 66 | Scenario, Adjustment
Assets
Cash and cash equivalents	0	2		9		0
Accounts receivable—related parties		0
Accounts receivable—third parties		0
Materials and supplies		2
Prepaid expenses		0
Other current assets		2
Total Current Assets		6
Equity investments		0
Net properties, plants and equipment		1,152
Goodwill		0
Deferred rentals—related parties		0
Other assets		0
Total Assets		1,158
Liabilities
Accounts payable—related parties		0
Accounts payable—third parties		58
Payroll and benefits payable		1
Accrued property and other taxes		3
Accrued interest		7
Deferred revenues—related parties		0
Other current liabilities		0
Total Current Liabilities		69
Notes payable—related party		964
Long-term debt		0
Asset retirement obligations		1
Accrued environmental costs		0
Deferred income taxes		0
Deferred revenues—related parties—long-term		10
Total Liabilities		1,044
Equity
Net investment—Predecessors		114
Total Liabilities and Equity		1,158
Standish And Sweeny Fractionator Acquisition | Common Units | Public | Phillips 66 | Scenario, Adjustment
Equity
Unitholders		0
Standish And Sweeny Fractionator Acquisition | Common Units | Non-public | Phillips 66 | Scenario, Adjustment
Equity
Unitholders		0
Eagle Acquisition | Phillips 66 | Scenario, Adjustment
Equity
General partner—Phillips 66 (2016—2,187,386 units issued and outstanding; 2015—1,683,425 units issued and outstanding)		0
Accumulated other comprehensive loss		0
Total Equity		940
Eagle Acquisition | Phillips 66 | Phillips 66 | Scenario, Adjustment
Assets
Cash and cash equivalents	$ 0	0		$ 0		$ 0
Accounts receivable—related parties		0
Accounts receivable—third parties		4
Materials and supplies		4
Prepaid expenses		0
Other current assets		0
Total Current Assets		8
Equity investments		0
Net properties, plants and equipment		793
Goodwill		179
Deferred rentals—related parties		0
Other assets		0
Total Assets		980
Liabilities
Accounts payable—related parties		0
Accounts payable—third parties		15
Payroll and benefits payable		2
Accrued property and other taxes		6
Accrued interest		0
Deferred revenues—related parties		0
Other current liabilities		3
Total Current Liabilities		26
Notes payable—related party		0
Long-term debt		0
Asset retirement obligations		7
Accrued environmental costs		3
Deferred income taxes		1
Deferred revenues—related parties—long-term		3
Total Liabilities		40
Equity
Net investment—Predecessors		940
Total Liabilities and Equity		980
Eagle Acquisition | Common Units | Public | Phillips 66 | Scenario, Adjustment
Equity
Unitholders		0
Eagle Acquisition | Common Units | Non-public | Phillips 66 | Scenario, Adjustment
Equity
Unitholders		$ 0
[1]	Prior-period financial information has been retrospectively adjusted for acquisitions of businesses under common control.

Acquisitions (Balance Sheet) Sh

Acquisitions (Balance Sheet) Share information (Details) - shares	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Business Acquisition [Line Items]
General partner—Phillips 66 units issued (in shares)	2,187,386	1,683,425	1,531,518
General partner—Phillips 66 units outstanding (in shares)	2,187,386	1,683,425	1,531,518
Common Units | Public
Business Acquisition [Line Items]
Units issued (in shares)	43,134,902	24,138,750	18,888,750
Units outstanding (in shares)	43,134,902	24,138,750	18,888,750
Phillips 66 | Common Units | Non-public
Business Acquisition [Line Items]
Units issued (in shares)	64,047,024	58,349,042	20,938,948
Units outstanding (in shares)	64,047,024	58,349,042	20,938,948

Acquisitions (Cash Flow) (Detai

Acquisitions (Cash Flow) (Details) - USD ($) $ in Millions		Mar. 02, 2015	Dec. 01, 2014	Mar. 01, 2014	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015		Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015		Dec. 31, 2014
Business Acquisition [Line Items]
Net income					$ 102	$ 112	$ 100	$ 94	$ 95		$ 78	$ 72	$ 61	$ 408	$ 306	[1],[2]	$ 245	[1],[2]
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation														96	61	[2],[3]	46	[2],[3]
Deferred rentals														1	0	[3]	0	[3]
Accrued environmental costs														1	1	[3]
Unfunded equity losses														1	0	[3]	0	[3]
Deferred revenues														9	11	[3]	2	[3]
Other														4	1	[3]	0
Working capital adjustments
Decrease (increase) in accounts receivable														(58)	1	[3]	(14)	[3]
Decrease (increase) in materials and supplies														(2)	(2)	[3]	0	[3]
Decrease (increase) in prepaid expenses and other current assets														(2)	(2)	[3]	0	[3]
Increase (decrease) in accounts payable														19	(9)	[3]	12	[3]
Increase (decrease) in accrued interest														4	13	[3]	2	[3]
Increase (decrease) in deferred revenues														10	4	[3]	1	[3]
Increase (decrease) in other accruals														1	7	[3]	2	[3]
Net Cash Provided by Operating Activities														492	392	[3]	296	[3]
Cash Flows From Investing Activities
Sand Hills/Southern Hills/Explorer equity investment acquisition														(990)
Cash capital expenditures and investments														(584)	(948)	[3]	(659)	[3]
Return of investment from equity affiliates														16	12	[3]	0	[3]
Other															0		0
Net Cash Used in Investing Activities														(1,558)	(1,670)	[3]	(825)	[3]
Cash Flows From Financing Activities
Net contributions from (to) Phillips 66 to (from) Predecessors														45	(46)	[3]	94	[3]
Project prefunding from Phillips 66	[3]														0		2
Acquisition of noncontrolling interest in Sweeny Frac LLC														(656)	0	[3]	0	[3]
Issuance of debt														2,118	1,781	[3]	380	[3]
Repayment of debt														(1,096)	(499)	[3]	(10)	[3]
Issuance of common units														983	396	[3]	0	[3]
Offering costs														(12)	(12)	[3]	0	[3]
Debt issuance costs														(10)	(10)	[3]	(1)	[3]
Distributions to General Partner associated with acquisitions														(119)	(146)
Other cash contributions from Phillips 66														24	0	[3]	4	[3]
Net Cash Provided by Financing Activities														1,018	1,311	[3]	121	[3]
Net Change in Cash and Cash Equivalents														(48)	33	[3]	(408)	[3]
Cash and cash equivalents at beginning of period	[3]							50					17	50	17		425
Cash and Cash Equivalents at End of Period					2				50	[3]				2	50	[3]	17	[3]
Bayway Ferndale Cross-Channel acquisition
Cash Flows From Investing Activities
Sand Hills/Southern Hills/Explorer equity investment acquisition														0	0	[3]	(28)	[3]
Gold Line/Medford acquisition
Cash Flows From Investing Activities
Sand Hills/Southern Hills/Explorer equity investment acquisition														0	0	[3]	(138)	[3]
Scenario, Previously Reported
Business Acquisition [Line Items]
Net income														308	194		124
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation														62	22		16
Deferred rentals														1
Accrued environmental costs														1	1
Unfunded equity losses														1
Deferred revenues														9			0
Other														0	3		1
Working capital adjustments
Decrease (increase) in accounts receivable														(58)	(2)		(11)
Decrease (increase) in materials and supplies														(2)	0
Decrease (increase) in prepaid expenses and other current assets														(2)	0
Increase (decrease) in accounts payable														16	(8)		9
Increase (decrease) in accrued interest														4	13		2
Increase (decrease) in deferred revenues														10	4		1
Increase (decrease) in other accruals														(3)	3		0
Net Cash Provided by Operating Activities														347	230		142
Cash Flows From Investing Activities
Sand Hills/Southern Hills/Explorer equity investment acquisition														(990)
Cash capital expenditures and investments														(469)	(205)		(157)
Return of investment from equity affiliates														16	12
Other															(8)		8
Net Cash Used in Investing Activities														(1,443)	(935)		(315)
Cash Flows From Financing Activities
Net contributions from (to) Phillips 66 to (from) Predecessors														0			81
Project prefunding from Phillips 66																	2
Acquisition of noncontrolling interest in Sweeny Frac LLC														(656)
Issuance of debt														2,090	1,169		28
Repayment of debt														(991)	(499)		(10)
Issuance of common units														983	396
Offering costs														(12)	(12)
Debt issuance costs														(10)	(10)		(1)
Distributions to General Partner associated with acquisitions														(119)	(146)
Other cash contributions from Phillips 66														24			4
Net Cash Provided by Financing Activities														1,050	745		(244)
Net Change in Cash and Cash Equivalents														(46)	40		(417)
Cash and cash equivalents at beginning of period								48					8	48	8		425
Cash and Cash Equivalents at End of Period					2				48					2	48		8
Phillips 66 | Phillips 66 | Eagle Acquisition
Cash Flows From Investing Activities
Sand Hills/Southern Hills/Explorer equity investment acquisition														(990)
Phillips 66 | Phillips 66 | Bayway Ferndale Cross-Channel acquisition
Cash Flows From Investing Activities
Sand Hills/Southern Hills/Explorer equity investment acquisition			$ (160)
Phillips 66 | Phillips 66 | Gold Line/Medford acquisition
Cash Flows From Investing Activities
Sand Hills/Southern Hills/Explorer equity investment acquisition				$ (138)
Phillips 66 | Phillips 66 | Scenario, Adjustment | Standish And Sweeny Fractionator Acquisition
Business Acquisition [Line Items]
Net income														11	(5)		10
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation														5	4		1
Deferred rentals														0
Accrued environmental costs														0	0
Unfunded equity losses														0
Deferred revenues														0	11		1
Other														6	0		(1)
Working capital adjustments
Decrease (increase) in accounts receivable														0	0		0
Decrease (increase) in materials and supplies														0	(2)
Decrease (increase) in prepaid expenses and other current assets														0	(2)
Increase (decrease) in accounts payable														1	5		0
Increase (decrease) in accrued interest														0	0		0
Increase (decrease) in deferred revenues														0	0		0
Increase (decrease) in other accruals														(1)	3		1
Net Cash Provided by Operating Activities														22	14		12
Cash Flows From Investing Activities
Sand Hills/Southern Hills/Explorer equity investment acquisition														0
Cash capital expenditures and investments														(36)	(668)		(384)
Return of investment from equity affiliates														0	0
Other															8		(8)
Net Cash Used in Investing Activities														(36)	(660)		(392)
Cash Flows From Financing Activities
Net contributions from (to) Phillips 66 to (from) Predecessors														89	27		37
Project prefunding from Phillips 66																	0
Acquisition of noncontrolling interest in Sweeny Frac LLC														0
Issuance of debt														28	612		352
Repayment of debt														(105)	0		0
Issuance of common units														0	0
Offering costs														0	0
Debt issuance costs														0	0		0
Distributions to General Partner associated with acquisitions														0	0
Other cash contributions from Phillips 66														0			0
Net Cash Provided by Financing Activities														12	639		389
Net Change in Cash and Cash Equivalents														(2)	(7)		9
Cash and cash equivalents at beginning of period								2					9	2	9		0
Cash and Cash Equivalents at End of Period					0				2					0	2		9
Phillips 66 | Phillips 66 | Scenario, Adjustment | Eagle Acquisition
Business Acquisition [Line Items]
Net income														89	117		111
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation														29	35		29
Deferred rentals														0
Accrued environmental costs														0	0
Unfunded equity losses														0
Deferred revenues														0	0		1
Other														(2)	(2)		0
Working capital adjustments
Decrease (increase) in accounts receivable														0	3		(3)
Decrease (increase) in materials and supplies														0	0
Decrease (increase) in prepaid expenses and other current assets														0	0
Increase (decrease) in accounts payable														2	(6)		3
Increase (decrease) in accrued interest														0	0		0
Increase (decrease) in deferred revenues														0	0		0
Increase (decrease) in other accruals														5	1		1
Net Cash Provided by Operating Activities														123	148		142
Cash Flows From Investing Activities
Sand Hills/Southern Hills/Explorer equity investment acquisition														0
Cash capital expenditures and investments														(79)	(75)		(118)
Return of investment from equity affiliates														0	0
Other															0		0
Net Cash Used in Investing Activities														(79)	(75)		(118)
Cash Flows From Financing Activities
Net contributions from (to) Phillips 66 to (from) Predecessors														(44)	(73)		(24)
Project prefunding from Phillips 66																	0
Acquisition of noncontrolling interest in Sweeny Frac LLC														0
Issuance of debt														0	0		0
Repayment of debt														0	0		0
Issuance of common units														0	0
Offering costs														0	0
Debt issuance costs														0	0		0
Distributions to General Partner associated with acquisitions														0	0
Other cash contributions from Phillips 66														0			0
Net Cash Provided by Financing Activities														(44)	(73)		(24)
Net Change in Cash and Cash Equivalents														0			0
Cash and cash equivalents at beginning of period								$ 0					$ 0	0	0		0
Cash and Cash Equivalents at End of Period					$ 0				$ 0					0	0		0
Common Units | Public
Cash Flows From Financing Activities
Quarterly distributions to common unitholders/General Partner														(64)	(35)	[3]	(21)	[3]
Common Units | Public | Scenario, Previously Reported
Cash Flows From Financing Activities
Quarterly distributions to common unitholders/General Partner														(64)	(35)		(21)
Common Units | Public | Phillips 66 | Phillips 66 | Scenario, Adjustment | Standish And Sweeny Fractionator Acquisition
Cash Flows From Financing Activities
Quarterly distributions to common unitholders/General Partner														0	0		0
Common Units | Public | Phillips 66 | Phillips 66 | Scenario, Adjustment | Eagle Acquisition
Cash Flows From Financing Activities
Quarterly distributions to common unitholders/General Partner														0	0		0
Common Units | Non-public
Cash Flows From Financing Activities
Quarterly distributions to common unitholders/General Partner														(119)	(63)		(22)
Common Units | Non-public | Scenario, Previously Reported
Cash Flows From Financing Activities
Quarterly distributions to common unitholders/General Partner														(119)	(63)		(22)
Common Units | Non-public | Phillips 66
Cash Flows From Financing Activities
Quarterly distributions to common unitholders/General Partner														(119)	(63)	[3]	(22)	[3]
Common Units | Non-public | Phillips 66 | Phillips 66 | Scenario, Adjustment | Standish And Sweeny Fractionator Acquisition
Cash Flows From Financing Activities
Quarterly distributions to common unitholders/General Partner														0	0		0
Common Units | Non-public | Phillips 66 | Phillips 66 | Scenario, Adjustment | Eagle Acquisition
Cash Flows From Financing Activities
Quarterly distributions to common unitholders/General Partner														0	0		0
Subordinated Units | Scenario, Previously Reported
Cash Flows From Financing Activities
Quarterly distributions to common unitholders/General Partner																	(39)
Subordinated Units | Phillips 66 | Phillips 66 | Scenario, Adjustment | Standish And Sweeny Fractionator Acquisition
Cash Flows From Financing Activities
Quarterly distributions to common unitholders/General Partner																	0
Subordinated Units | Phillips 66 | Phillips 66 | Scenario, Adjustment | Eagle Acquisition
Cash Flows From Financing Activities
Quarterly distributions to common unitholders/General Partner																	0
Subordinated Units | Non-public
Cash Flows From Financing Activities
Quarterly distributions to common unitholders/General Partner															(25)		(39)
Subordinated Units | Non-public | Scenario, Previously Reported
Cash Flows From Financing Activities
Quarterly distributions to common unitholders/General Partner															(25)
Subordinated Units | Non-public | Phillips 66
Cash Flows From Financing Activities
Quarterly distributions to common unitholders/General Partner														0	(25)	[3]	(39)	[3]
Subordinated Units | Non-public | Phillips 66 | Phillips 66 | Scenario, Adjustment | Standish And Sweeny Fractionator Acquisition
Cash Flows From Financing Activities
Quarterly distributions to common unitholders/General Partner															0
Subordinated Units | Non-public | Phillips 66 | Phillips 66 | Scenario, Adjustment | Eagle Acquisition
Cash Flows From Financing Activities
Quarterly distributions to common unitholders/General Partner															0
General Partner
Cash Flows From Financing Activities
Distributions to General Partner associated with acquisitions	[4]													(119)	(146)	[3]	(262)	[3]
Quarterly distributions to common unitholders/General Partner														(76)	(30)	[3]	(4)	[3]
General Partner | Scenario, Previously Reported
Cash Flows From Financing Activities
Distributions to General Partner associated with acquisitions																	(262)
Quarterly distributions to common unitholders/General Partner														(76)	(30)		(4)
General Partner | Phillips 66 | Gold Line/Medford acquisition
Cash Flows From Financing Activities
Distributions to General Partner associated with acquisitions				$ (262)
General Partner | Phillips 66 | Phillips 66 | Scenario, Adjustment | Standish And Sweeny Fractionator Acquisition
Cash Flows From Financing Activities
Distributions to General Partner associated with acquisitions																	0
Quarterly distributions to common unitholders/General Partner														0	0		0
General Partner | Phillips 66 | Phillips 66 | Scenario, Adjustment | Eagle Acquisition
Cash Flows From Financing Activities
Distributions to General Partner associated with acquisitions																	0
Quarterly distributions to common unitholders/General Partner														0	0		0
Eagle Acquisition
Cash Flows From Investing Activities
Sand Hills/Southern Hills/Explorer equity investment acquisition														(990)	0	[3]	0	[3]
Sand Hills/Southern Hills/ Explorer
Cash Flows From Investing Activities
Sand Hills/Southern Hills/Explorer equity investment acquisition														$ 0	(734)	[3]	0	[3]
Sand Hills/Southern Hills/ Explorer | Scenario, Previously Reported
Cash Flows From Investing Activities
Sand Hills/Southern Hills/Explorer equity investment acquisition															(734)
Sand Hills/Southern Hills/ Explorer | Phillips 66 | Phillips 66
Cash Flows From Investing Activities
Sand Hills/Southern Hills/Explorer equity investment acquisition		$ (734)
Sand Hills/Southern Hills/ Explorer | Phillips 66 | Phillips 66 | Scenario, Adjustment | Standish And Sweeny Fractionator Acquisition
Cash Flows From Investing Activities
Sand Hills/Southern Hills/Explorer equity investment acquisition															0
Sand Hills/Southern Hills/ Explorer | Phillips 66 | Phillips 66 | Scenario, Adjustment | Eagle Acquisition
Cash Flows From Investing Activities
Sand Hills/Southern Hills/Explorer equity investment acquisition															$ 0
Sand Hills/Southern Hills/ Explorer | General Partner | Phillips 66
Cash Flows From Financing Activities
Distributions to General Partner associated with acquisitions		$ (146)
Gold Line/Medford acquisition
Cash Flows From Investing Activities
Sand Hills/Southern Hills/Explorer equity investment acquisition																	(138)
Gold Line/Medford acquisition | Scenario, Previously Reported
Cash Flows From Investing Activities
Sand Hills/Southern Hills/Explorer equity investment acquisition																	(138)
Gold Line/Medford acquisition | Phillips 66 | Phillips 66 | Scenario, Adjustment | Standish And Sweeny Fractionator Acquisition
Cash Flows From Investing Activities
Sand Hills/Southern Hills/Explorer equity investment acquisition																	0
Gold Line/Medford acquisition | Phillips 66 | Phillips 66 | Scenario, Adjustment | Eagle Acquisition
Cash Flows From Investing Activities
Sand Hills/Southern Hills/Explorer equity investment acquisition																	0
Bayway Ferndale Cross-Channel acquisition
Cash Flows From Investing Activities
Sand Hills/Southern Hills/Explorer equity investment acquisition																	(28)
Bayway Ferndale Cross-Channel acquisition | Scenario, Previously Reported
Cash Flows From Investing Activities
Sand Hills/Southern Hills/Explorer equity investment acquisition																	(28)
Bayway Ferndale Cross-Channel acquisition | Phillips 66 | Phillips 66 | Scenario, Adjustment | Standish And Sweeny Fractionator Acquisition
Cash Flows From Investing Activities
Sand Hills/Southern Hills/Explorer equity investment acquisition																	0
Bayway Ferndale Cross-Channel acquisition | Phillips 66 | Phillips 66 | Scenario, Adjustment | Eagle Acquisition
Cash Flows From Investing Activities
Sand Hills/Southern Hills/Explorer equity investment acquisition																	$ 0
[1]	*Prior-period financial information has been retrospectively adjusted for acquisitions of businesses under common contro
[2]	Prior-period financial information has been retrospectively adjusted for acquisitions of businesses under common control.
[3]	Prior-period financial information has been retrospectively adjusted for acquisitions of businesses under common control.
[4]	See Note 18— Cash Flow Information

Equity Investments (Schedule of

Equity Investments (Schedule of Equity Investments) (Details) - USD ($) $ in Millions	Dec. 31, 2016	Aug. 09, 2016	Dec. 31, 2015
Schedule of Equity Method Investments [Line Items]
Carrying Value	$ 1,142		$ 945	[1]
Sand Hills
Schedule of Equity Method Investments [Line Items]
Percentage ownership	33.34%
Carrying Value	$ 445		431
Southern Hills
Schedule of Equity Method Investments [Line Items]
Percentage ownership	33.34%
Carrying Value	$ 212		$ 213
Explorer
Schedule of Equity Method Investments [Line Items]
Percentage ownership	21.94%	21.94%	19.46%
Carrying Value	$ 126		$ 102
Phillips 66 Partners Terminal
Schedule of Equity Method Investments [Line Items]
Percentage ownership	70.00%
Carrying Value	$ 72		77
Paradigm Pipeline
Schedule of Equity Method Investments [Line Items]
Percentage ownership	50.00%
Carrying Value	$ 117		52
Bayou Bridge Pipeline
Schedule of Equity Method Investments [Line Items]
Percentage ownership	40.00%
Carrying Value	$ 115		70
STACK Pipeline
Schedule of Equity Method Investments [Line Items]
Percentage ownership	50.00%
Carrying Value	$ 55		$ 0
[1]	Prior-period financial information has been retrospectively adjusted for acquisitions of businesses under common control.

Equity Investments (Schedule 52

Equity Investments (Schedule Of Earnings From Equity Investments) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015		Dec. 31, 2014	[1]
Schedule of Equity Method Investments [Line Items]
Equity in earnings of affiliates	$ 114	$ 77	[1]	$ 0
Sand Hills
Schedule of Equity Method Investments [Line Items]
Equity in earnings of affiliates	62	48
Southern Hills
Schedule of Equity Method Investments [Line Items]
Equity in earnings of affiliates	26	14
Explorer
Schedule of Equity Method Investments [Line Items]
Equity in earnings of affiliates	23	15
Phillips 66 Partners Terminal
Schedule of Equity Method Investments [Line Items]
Equity in earnings of affiliates	0	0
Paradigm Pipeline
Schedule of Equity Method Investments [Line Items]
Equity in earnings of affiliates	(2)	0
Bayou Bridge Pipeline
Schedule of Equity Method Investments [Line Items]
Equity in earnings of affiliates	3	0
STACK Pipeline
Schedule of Equity Method Investments [Line Items]
Equity in earnings of affiliates	$ 2	$ 0
[1]	Prior-period financial information has been retrospectively adjusted for acquisitions of businesses under common control.

Equity Investments (Summarized

Equity Investments (Summarized Financial Information) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Schedule of Equity Method Investments [Line Items]
Revenues	$ 840	$ 596	$ 0
Income before income taxes	494	322	0
Net income	408	321	0
Current assets	243	269	0
Noncurrent assets	3,437	3,106	0
Current liabilities	396	180	0
Noncurrent liabilities	$ 231	$ 446	$ 0

Equity Investments (Narrative)

Equity Investments (Narrative) (Details) $ in Millions

Oct. 14, 2016

Aug. 09, 2016

Aug. 03, 2016USD ($)

May 10, 2016

Mar. 01, 2016

Dec. 01, 2015USD ($)shares

Mar. 02, 2015USD ($)shares

Dec. 01, 2014

Mar. 01, 2014

Jan. 31, 2015USD ($)joint_venture

Dec. 31, 2014

Dec. 31, 2016USD ($)shares

Dec. 31, 2015USD ($)shares

Dec. 31, 2014shares

Schedule of Equity Method Investments [Line Items]

Units issued associated with acquisitions (in shares) | shares

6,201,943

2,345,339

4,704,221

General partner interest maintained, percent

2.00%

2.00%

2.00%

2.00%

2.00%

2.00%

2.00%

2.00%

Distributions received from affiliates

$ 131

$ 89

STACK Pipeline

Schedule of Equity Method Investments [Line Items]

Ownership interest, percentage

50.00%

Payments to acquire interest in joint venture

$ 50

Basis difference

$ 42

Amortization period of basis difference, in years

45 years

Phillips 66 Partners Terminal

Schedule of Equity Method Investments [Line Items]

Ownership interest, percentage

70.00%

Supermajority, percentage

80.00%

Paradigm Pipeline

Schedule of Equity Method Investments [Line Items]

Ownership interest, percentage

50.00%

Sand Hills

Schedule of Equity Method Investments [Line Items]

Ownership interest, percentage

33.34%

Bayou Bridge Pipeline

Schedule of Equity Method Investments [Line Items]

Ownership interest, percentage

40.00%

Southern Hills

Schedule of Equity Method Investments [Line Items]

Ownership interest, percentage

33.34%

Basis difference

$ (96)

Amortization period of basis difference, in years

45 years

Explorer

Schedule of Equity Method Investments [Line Items]

Ownership interest, percentage

21.94%

21.94%

19.46%

Equity method investment ownership percentage acquired

2.48%

Basis difference

$ 98

Paradigm Energy Partners, LLC

Schedule of Equity Method Investments [Line Items]

Number of joint ventures formed to develop midstream logistics infrastructure in North Dakota | joint_venture

2

Paradigm Energy Partners, LLC | Phillips 66 Partners Terminal

Schedule of Equity Method Investments [Line Items]

Ownership interest, percentage

70.00%

Paradigm Energy Partners, LLC | Paradigm Pipeline

Schedule of Equity Method Investments [Line Items]

Ownership interest, percentage

50.00%

Cash paid for equity method investment interest acquired

$ 5

Phillips 66 | Phillips 66 | Sand Hills/Southern Hills/ Explorer

Schedule of Equity Method Investments [Line Items]

Total consideration for the transaction

$ 1,010

Cash consideration

880

Transaction costs expensed

$ 1

Phillips 66 | Phillips 66 | Bayou Bridge Pipeline

Schedule of Equity Method Investments [Line Items]

Percentage of ownership in equity method investment acquired

40.00%

Total consideration for the transaction

$ 70

Cash consideration

$ 35

Phillips 66 | Phillips 66 | Explorer

Schedule of Equity Method Investments [Line Items]

Percentage of ownership in equity method investment acquired

19.46%

Common Units | Phillips 66 | Phillips 66 | Sand Hills/Southern Hills/ Explorer

Schedule of Equity Method Investments [Line Items]

Units issued associated with acquisitions (in shares) | shares

1,587,376

Common Units | Phillips 66 | Phillips 66 | Bayou Bridge Pipeline

Schedule of Equity Method Investments [Line Items]

Units issued associated with acquisitions (in shares) | shares

606,056

General Partner

Schedule of Equity Method Investments [Line Items]

Units issued associated with acquisitions (in shares) | shares

503,961

151,907

94,085

General Partner | Phillips 66 | Sand Hills/Southern Hills/ Explorer

Schedule of Equity Method Investments [Line Items]

Units issued associated with acquisitions (in shares) | shares

139,538

General Partner | Phillips 66 | Bayou Bridge Pipeline

Schedule of Equity Method Investments [Line Items]

Units issued associated with acquisitions (in shares) | shares

12,369

Plains All American Pipeline, L.P. | STACK Pipeline

Schedule of Equity Method Investments [Line Items]

Ownership interest, percentage

50.00%

50.00%

Energy Transfer Partners | Bayou Bridge Pipeline

Schedule of Equity Method Investments [Line Items]

Equity interest help by co-venturer, percentage

30.00%

Sunoco Logistics Partners | Bayou Bridge Pipeline

Schedule of Equity Method Investments [Line Items]

Equity interest help by co-venturer, percentage

30.00%

Phillips 66 | Sand Hills/Southern Hills/ Explorer

Schedule of Equity Method Investments [Line Items]

The percentage of Phillips 66's equity interest owned that was acquired, percentage

100.00%

Minimum | Explorer

Schedule of Equity Method Investments [Line Items]

Amortization period of basis difference, in years

11 years

Maximum | Explorer

Schedule of Equity Method Investments [Line Items]

Amortization period of basis difference, in years

19 years

Major Customer and Concentrat55

Major Customer and Concentration of Credit Risk (Narrative) (Details)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Phillips 66 | Customer Concentration Risk | Transportation And Terminaling Services Revenues
Concentration Risk [Line Items]
Percentage of total transportation and terminaling services revenues	95.00%	94.00%	95.00%

Properties, Plants and Equipm56

Properties, Plants and Equipment (Summary of Properties, Plants and Equipment) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Property, Plant and Equipment [Line Items]
Gross PP&E	$ 3,400	$ 3,069
Less: Accumulated depreciation	725	632
Net PP&E	2,675	2,437	[1]
Land
Property, Plant and Equipment [Line Items]
Gross PP&E	19	39
Buildings and improvements
Property, Plant and Equipment [Line Items]
Gross PP&E	88	51
Pipelines and related assets
Property, Plant and Equipment [Line Items]
Gross PP&E	1,335	1,097
Terminals and related assets
Property, Plant and Equipment [Line Items]
Gross PP&E	$ 610	547
Rail racks and related assets
Property, Plant and Equipment [Line Items]
Estimated Useful Lives	33 years
Gross PP&E	$ 137	136
Fractionator and related assets
Property, Plant and Equipment [Line Items]
Estimated Useful Lives	25 years
Gross PP&E	$ 615	626
Caverns and related assets
Property, Plant and Equipment [Line Items]
Gross PP&E	569	277
Construction-in-progress
Property, Plant and Equipment [Line Items]
Gross PP&E	$ 27	$ 296
Minimum | Buildings and improvements
Property, Plant and Equipment [Line Items]
Estimated Useful Lives	3 years
Minimum | Pipelines and related assets
Property, Plant and Equipment [Line Items]
Estimated Useful Lives	10 years
Minimum | Terminals and related assets
Property, Plant and Equipment [Line Items]
Estimated Useful Lives	25 years
Minimum | Caverns and related assets
Property, Plant and Equipment [Line Items]
Estimated Useful Lives	25 years
Maximum | Buildings and improvements
Property, Plant and Equipment [Line Items]
Estimated Useful Lives	30 years
Maximum | Pipelines and related assets
Property, Plant and Equipment [Line Items]
Estimated Useful Lives	45 years
Maximum | Terminals and related assets
Property, Plant and Equipment [Line Items]
Estimated Useful Lives	45 years
Maximum | Caverns and related assets
Property, Plant and Equipment [Line Items]
Estimated Useful Lives	45 years
[1]	Prior-period financial information has been retrospectively adjusted for acquisitions of businesses under common control.

Goodwill (Details)

Goodwill (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016		Dec. 31, 2015
Goodwill [Roll Forward]
Beginning balance January 1	$ 182	[1]	$ 182
Goodwill assigned to acquisitions	3		0
Ending balance December 31	$ 185		$ 182	[1]
[1]	Prior-period financial information has been retrospectively adjusted for acquisitions of businesses under common control.

Asset Retirement Obligations an

Asset Retirement Obligations and Accrued Environmental Costs (Summary of Asset Retirement Obligations and Accrued Environmental Costs) (Details) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Asset Retirement Obligations and Accrued Environmental Costs [Abstract]
Asset retirement obligations	$ 9	$ 11	$ 11
Accrued environmental costs	2	4
Total asset retirement obligations and accrued environmental costs	11	15
Asset retirement obligations and accrued environmental costs due within one year	0	0
Long-term asset retirement obligations and accrued environmental costs	$ 11	$ 15

Asset Retirement Obligations 59

Asset Retirement Obligations and Accrued Environmental Costs (Schedule of Change in Asset Retirement Obligation) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Asset Retirement Obligation, Roll Forward Analysis [Roll Forward]
Balance at January 1	$ 11	$ 11
Accretion of discount	0	1
New obligations	0	0
Changes in estimates of existing obligations	(2)	(1)
Balance at December 31	$ 9	$ 11

Assets Retirement Obligations60

Assets Retirement Obligations and Accrued Environmental Costs (Narrative) (Details)	1 Months Ended	12 Months Ended
	Apr. 30, 2015bbl	Dec. 31, 2016USD ($)	Dec. 31, 2015USD ($)
Loss Contingencies [Line Items]
Current asset retirement obligations		$ 0
Costs associated with cleanup and remediation		1,000,000	$ 1,000,000	[1]
Total environmental accrual recorded		2,000,000	4,000,000
Pipeline Hartford Terminal To A Dock On The Mississippi River
Loss Contingencies [Line Items]
Diesel fuel release, in barrels | bbl	800
Pipeline Hartford Terminal To A Dock On The Mississippi River | Diesel Fuel Release
Loss Contingencies [Line Items]
Costs associated with cleanup and remediation			$ 5,000,000
Maximum | Loss from Catastrophes
Loss Contingencies [Line Items]
Self-insured retention		5,000,000
Maximum | Uninsured Risk
Loss Contingencies [Line Items]
Self-insured retention		$ 5,000,000
[1]	Prior-period financial information has been retrospectively adjusted for acquisitions of businesses under common control.

Net Income Per Limited Partne61

Net Income Per Limited Partner Unit Net Income Per Limited Partner Unit (Schedule of Net Income By Class of Participating Securities Distributions ) (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015		Dec. 31, 2014
Limited Partners' Capital Account [Line Items]
Net income attributable to the Partnership	$ 98	$ 83	$ 68	$ 52	$ 64	$ 53	$ 42	$ 35	$ 301	$ 194	[1]	$ 116	[1]
Distributions declared									296	175		99
Distributions less than net income attributable to the Partnership									5	19		17
General Partner
Limited Partners' Capital Account [Line Items]
Net income attributable to the Partnership									92	41		8
Distributions declared									91	39		8
Distributions less than net income attributable to the Partnership									1	2		0
Common Units | Limited Partner
Limited Partners' Capital Account [Line Items]
Net income attributable to the Partnership									209	137		57
Distributions declared									205	123		48
Distributions less than net income attributable to the Partnership									4	14		9
Subordinated Units | Limited Partner
Limited Partners' Capital Account [Line Items]
Net income attributable to the Partnership									0	16		51
Distributions declared									0	13		43
Distributions less than net income attributable to the Partnership									$ 0	$ 3		$ 8
[1]	Prior-period financial information has been retrospectively adjusted for acquisitions of businesses under common control.

Net Income Per Limited Partne62

Net Income Per Limited Partner Unit (Schedule of Net Income By Class of Participating Securities) (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015		Dec. 31, 2014
Partners' Capital [Abstract]
Distributions declared									$ 296	$ 175		$ 99
Distributions less than net income attributable to the Partnership									5	19		17
Net income attributable to the Partnership	$ 98	$ 83	$ 68	$ 52	$ 64	$ 53	$ 42	$ 35	$ 301	$ 194	[1]	$ 116	[1]
Weighted average units outstanding, general partner, basic (in shares)									1,920,435	1,649,169		1,499,704
Weighted average units outstanding, basic (in shares)									97,160,336	82,559,111		74,985,187
Weighted average units outstanding, general partner, diluted (in shares)									1,920,435	1,649,169		1,499,704
Weighted average units outstanding, diluted (in shares)									97,160,336	82,559,111		74,985,187
Common Units
Partners' Capital [Abstract]
Weighted average units outstanding, limited partner, basic (in shares)									95,239,901	68,173,891		38,268,371
Weighted average units outstanding, limited partner, diluted (in shares)									95,239,901	68,173,891		38,268,371
Net income per limited partner unit, basic (in usd per share)									$ 2.20	$ 2.02		$ 1.48
Net income per limited partner unit, diluted (in usd per share)									$ 2.20	$ 2.02		$ 1.48
Subordinated Units
Partners' Capital [Abstract]
Weighted average units outstanding, limited partner, basic (in shares)									0	12,736,051		35,217,112
Weighted average units outstanding, limited partner, diluted (in shares)									0	12,736,051		35,217,112
Net income per limited partner unit, basic (in usd per share)									$ 0	$ 1.24		$ 1.45
Net income per limited partner unit, diluted (in usd per share)									$ 0	$ 1.24		$ 1.45
General Partner
Partners' Capital [Abstract]
Distributions declared									$ 91	$ 39		$ 8
Distributions less than net income attributable to the Partnership									1	2		0
Net income attributable to the Partnership									92	41		8
Limited Partner | Common Units
Partners' Capital [Abstract]
Distributions declared									205	123		48
Distributions less than net income attributable to the Partnership									4	14		9
Net income attributable to the Partnership									209	137		57
Limited Partner | Subordinated Units
Partners' Capital [Abstract]
Distributions declared									0	13		43
Distributions less than net income attributable to the Partnership									0	3		8
Net income attributable to the Partnership									$ 0	$ 16		$ 51
[1]	Prior-period financial information has been retrospectively adjusted for acquisitions of businesses under common control.

Net Income Per Limited Partne63

Net Income Per Limited Partner Unit (Narrative) (Details) - USD ($) $ / shares in Units, $ in Millions	Jan. 18, 2017	Jun. 30, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Subsequent Event [Line Items]
Total quarterly cash distribution declared, per unit (dollars)			$ 259	$ 153	$ 86
Cash Distribution [Member] | Subsequent Event [Member]
Subsequent Event [Line Items]
Quarterly cash distribution declared, per limited partner unit (in usd per share)	$ 0.5580
Total quarterly cash distribution declared, per unit (dollars)	$ 88
Phillips 66 | Non-public | Common Units
Subsequent Event [Line Items]
Total quarterly cash distribution declared, per unit (dollars)			119	$ 63	22
Subordinated units converted (in shares)		35,217,112		35,217,112
Phillips 66 | Non-public | Subordinated Units
Subsequent Event [Line Items]
Total quarterly cash distribution declared, per unit (dollars)			$ 0	$ 25	$ 39
Subordinated units converted (in shares)		35,217,112		(35,217,112)

Debt (Summary of Long-Term Debt

Debt (Summary of Long-Term Debt) (Details) - USD ($)	Dec. 31, 2016	Oct. 14, 2016	Dec. 31, 2015		Feb. 23, 2015
Debt Instrument [Line Items]
Notes payable—related party	$ 0		$ 964,000,000	[1]
Debt at face value	2,357,000,000		1,900,000,000
Debt at face value	2,435,000,000		2,064,000,000
Unamortized discounts and debt issuance costs	(24,000,000)		(9,000,000)
Long-term debt	2,411,000,000		2,055,000,000
Revolving credit facility at 1.98% at year-end 2016
Debt Instrument [Line Items]
Aggregate fair value	210,000,000
Senior Notes	210,000,000
Senior Notes
Debt Instrument [Line Items]
Senior Notes		$ 1,125,000,000			$ 1,100,000,000
2.646% Senior Notes due 2020 | Senior Notes
Debt Instrument [Line Items]
Aggregate fair value	298,000,000		282,000,000
Senior Notes	$ 300,000,000		300,000,000		$ 300,000,000
Interest rate, stated percentage	2.646%				2.646%
3.605% Senior Notes due 2025 | Senior Notes
Debt Instrument [Line Items]
Aggregate fair value	$ 490,000,000		432,000,000
Senior Notes	$ 500,000,000		500,000,000		$ 500,000,000
Interest rate, stated percentage	3.605%				3.605%
3.550% Senior Notes due 2026 | Senior Notes
Debt Instrument [Line Items]
Aggregate fair value	$ 483,000,000
Senior Notes	$ 500,000,000	$ 500,000,000
Interest rate, stated percentage	3.55%	3.55%
4.680% Senior Notes due 2045 | Senior Notes
Debt Instrument [Line Items]
Aggregate fair value	$ 277,000,000		225,000,000
Senior Notes	$ 300,000,000		$ 300,000,000		$ 300,000,000
Interest rate, stated percentage	4.68%				4.68%
4.900% Senior Notes due 2046 | Senior Notes
Debt Instrument [Line Items]
Aggregate fair value	$ 599,000,000
Senior Notes	$ 625,000,000	$ 625,000,000
Interest rate, stated percentage	4.90%	4.90%
Notes payable to Phillips 66 due 2020 at 3.0%
Debt Instrument [Line Items]
Interest rate, stated percentage			3.00%
Notes payable to Phillips 66 due 2020 at 3.0% | Phillips 66
Debt Instrument [Line Items]
Notes payable to Phillips 66 due 2020 at 3.0%			$ 961,000,000
Notes payable—related party			964,000,000
Level 1
Debt Instrument [Line Items]
Debt at face value	$ 0		0
Level 1 | Revolving credit facility at 1.98% at year-end 2016
Debt Instrument [Line Items]
Aggregate fair value	0
Level 1 | 2.646% Senior Notes due 2020 | Senior Notes
Debt Instrument [Line Items]
Aggregate fair value	0		0
Level 1 | 3.605% Senior Notes due 2025 | Senior Notes
Debt Instrument [Line Items]
Aggregate fair value	0		0
Level 1 | 3.550% Senior Notes due 2026 | Senior Notes
Debt Instrument [Line Items]
Aggregate fair value	0
Level 1 | 4.680% Senior Notes due 2045 | Senior Notes
Debt Instrument [Line Items]
Aggregate fair value	0		0
Level 1 | 4.900% Senior Notes due 2046 | Senior Notes
Debt Instrument [Line Items]
Aggregate fair value	0
Level 1 | Notes payable to Phillips 66 due 2020 at 3.0% | Phillips 66
Debt Instrument [Line Items]
Notes payable to Phillips 66 due 2020 at 3.0%			0
Level 2
Debt Instrument [Line Items]
Debt at face value	2,357,000,000		1,900,000,000
Level 2 | Revolving credit facility at 1.98% at year-end 2016
Debt Instrument [Line Items]
Aggregate fair value	210,000,000
Level 2 | 2.646% Senior Notes due 2020 | Senior Notes
Debt Instrument [Line Items]
Aggregate fair value	298,000,000		282,000,000
Level 2 | 3.605% Senior Notes due 2025 | Senior Notes
Debt Instrument [Line Items]
Aggregate fair value	490,000,000		432,000,000
Level 2 | 3.550% Senior Notes due 2026 | Senior Notes
Debt Instrument [Line Items]
Aggregate fair value	483,000,000
Level 2 | 4.680% Senior Notes due 2045 | Senior Notes
Debt Instrument [Line Items]
Aggregate fair value	277,000,000		225,000,000
Level 2 | 4.900% Senior Notes due 2046 | Senior Notes
Debt Instrument [Line Items]
Aggregate fair value	599,000,000
Level 2 | Notes payable to Phillips 66 due 2020 at 3.0% | Phillips 66
Debt Instrument [Line Items]
Notes payable to Phillips 66 due 2020 at 3.0%			961,000,000
Level 3
Debt Instrument [Line Items]
Debt at face value	0		0
Level 3 | Revolving credit facility at 1.98% at year-end 2016
Debt Instrument [Line Items]
Aggregate fair value	0
Level 3 | 2.646% Senior Notes due 2020 | Senior Notes
Debt Instrument [Line Items]
Aggregate fair value	0		0
Level 3 | 3.605% Senior Notes due 2025 | Senior Notes
Debt Instrument [Line Items]
Aggregate fair value	0		0
Level 3 | 3.550% Senior Notes due 2026 | Senior Notes
Debt Instrument [Line Items]
Aggregate fair value	0
Level 3 | 4.680% Senior Notes due 2045 | Senior Notes
Debt Instrument [Line Items]
Aggregate fair value	0		0
Level 3 | 4.900% Senior Notes due 2046 | Senior Notes
Debt Instrument [Line Items]
Aggregate fair value	$ 0
Level 3 | Notes payable to Phillips 66 due 2020 at 3.0% | Phillips 66
Debt Instrument [Line Items]
Notes payable to Phillips 66 due 2020 at 3.0%			$ 0
[1]	Prior-period financial information has been retrospectively adjusted for acquisitions of businesses under common control.

Debt (Narrative) (Details)

Debt (Narrative) (Details)	Oct. 31, 2016USD ($)agreement	Oct. 14, 2016USD ($)	May 10, 2016USD ($)note_payableagreement	Mar. 01, 2016USD ($)	Feb. 23, 2015USD ($)	Dec. 31, 2016USD ($)note_payable	Dec. 31, 2015USD ($)
Debt Instrument [Line Items]
Long-term debt, in next twelve months						$ 15,000,000
Long-term debt, in year four						298,000,000
Long-term debt, in year five						$ 195,000,000
Number of notes payable | note_payable						3
Unamortized discounts and debt issuance costs						$ 24,000,000	$ 9,000,000
Credit Agreement
Number or renewals available to extend the term of the credit agreement | agreement	2
Debt to EBITDA, ratio						5
Debt to EBITDA, acquisitions, ratio						5.5
Notes Payable, Noncurrent
Note payable to subsidiary of Phillips 66						$ 0	964,000,000	[1]
Revolving credit facility at 1.98% at year-end 2016
Debt Instrument [Line Items]
Senior Notes						210,000,000
Aggregate fair value						210,000,000
Credit Agreement
Revolving credit agreement borrowing capacity	$ 750,000,000
Amount drawn under credit agreement facility						210,000,000
Maximum borrowing capacity under option	$ 1,000,000,000
Note payable term, in years	1 year
Level 2 | Revolving credit facility at 1.98% at year-end 2016
Debt Instrument [Line Items]
Aggregate fair value						210,000,000
Phillips 66 | Phillips 66
Notes Payable, Noncurrent
Number of agreements | agreement			2
Phillips 66 | Sweeny Fractionator Acquisition | Phillips 66
Notes Payable, Noncurrent
Change in capital expenditure accruals				$ 212,000,000
Phillips 66 | Sweeny Frac Remaining Seventy Five Percent And Standish Pipeline Acquisition | Phillips 66
Debt Instrument [Line Items]
Number of notes payable | note_payable			3
Notes Payable, Noncurrent
Change in capital expenditure accruals			$ 225,000,000
Note payable to subsidiary of Phillips 66			$ 19,000,000
Number of agreements | agreement			3
Senior Notes
Debt Instrument [Line Items]
Senior Notes		$ 1,125,000,000			$ 1,100,000,000
Proceeds from debt, net of issuance costs		1,111,000,000			1,092,000,000
Senior Notes | 3.550% Senior Notes due 2026
Debt Instrument [Line Items]
Senior Notes		$ 500,000,000				$ 500,000,000
Interest rate, stated percentage		3.55%				3.55%
Aggregate fair value						$ 483,000,000
Senior Notes | 3.550% Senior Notes due 2026 | Level 2
Debt Instrument [Line Items]
Aggregate fair value						483,000,000
Senior Notes | 4.900% Senior Notes due 2046
Debt Instrument [Line Items]
Senior Notes		$ 625,000,000				$ 625,000,000
Interest rate, stated percentage		4.90%				4.90%
Aggregate fair value						$ 599,000,000
Senior Notes | 4.900% Senior Notes due 2046 | Level 2
Debt Instrument [Line Items]
Aggregate fair value						599,000,000
Senior Notes | 2.646% Senior Notes due 2020
Debt Instrument [Line Items]
Senior Notes					$ 300,000,000	$ 300,000,000	300,000,000
Interest rate, stated percentage					2.646%	2.646%
Aggregate fair value						$ 298,000,000	282,000,000
Senior Notes | 2.646% Senior Notes due 2020 | Level 2
Debt Instrument [Line Items]
Aggregate fair value						298,000,000	282,000,000
Senior Notes | 3.605% Senior Notes due 2025
Debt Instrument [Line Items]
Senior Notes					$ 500,000,000	$ 500,000,000	500,000,000
Interest rate, stated percentage					3.605%	3.605%
Aggregate fair value						$ 490,000,000	432,000,000
Senior Notes | 3.605% Senior Notes due 2025 | Level 2
Debt Instrument [Line Items]
Aggregate fair value						490,000,000	432,000,000
Senior Notes | 4.680% Senior Notes due 2045
Debt Instrument [Line Items]
Senior Notes					$ 300,000,000	$ 300,000,000	300,000,000
Interest rate, stated percentage					4.68%	4.68%
Aggregate fair value						$ 277,000,000	225,000,000
Senior Notes | 4.680% Senior Notes due 2045 | Level 2
Debt Instrument [Line Items]
Aggregate fair value						$ 277,000,000	$ 225,000,000
Maximum | Revolving credit facility at 1.98% at year-end 2016
Credit Agreement
Amount by which the revolving credit agreement borrowing capacity may be increased	$ 250,000,000
[1]	Prior-period financial information has been retrospectively adjusted for acquisitions of businesses under common control.

Equity (Narrative) (Details)

Equity (Narrative) (Details) - USD ($) $ / shares in Units, $ in Millions	Aug. 12, 2016	May 13, 2016	May 10, 2016	Feb. 28, 2015	Dec. 31, 2016	Dec. 31, 2015
Limited Partners' Capital Account [Line Items]
Number of common units issued in public offering (in shares)					18,996,152	5,250,000
Issuance of common units					$ 971	$ 384
Common Units
Limited Partners' Capital Account [Line Items]
Number of common units issued in public offering (in shares)	6,000,000		12,650,000	5,250,000
Issuance of common units	$ 299		$ 656	$ 384
Price per common limited partner unit (in usd per share)	$ 50.22		$ 52.40	$ 75.50
At The Market Offering Program | Common Units
Limited Partners' Capital Account [Line Items]
Number of common units issued in public offering (in shares)					346,152
Issuance of common units					$ 19
Maximum | At The Market Offering Program | Common Units
Limited Partners' Capital Account [Line Items]
Equity offering program, authorized amount		$ 250

Contingencies (Narrative) (Deta

Contingencies (Narrative) (Details) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Environmental
Accrued environmental costs	$ 2	$ 4

Leases (Schedule of Future Mini

Leases (Schedule of Future Minimum Operating Lease Income) (Details) - Phillips 66 $ in Millions	Dec. 31, 2016USD ($)
Future Minimum Payments to be Received
2,017	$ 556
2,018	538
2,019	506
2,020	502
2,021	494
Remaining years	1,848
Total	$ 4,444

Leases (Schedule of Future Mi69

Leases (Schedule of Future Minimum Payments for Operating Leases) (Details) - Phillips 66 $ in Millions	Dec. 31, 2016USD ($)
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]
2,017	$ 3
2,018	3
2,019	3
2,020	3
2,021	3
Remaining years	95
Total minimum lease payments	$ 110

Leases (Narrative) (Details)

Leases (Narrative) (Details) $ in Millions	12 Months Ended
	Dec. 31, 2016USD ($)
Phillips 66
Operating Leases, Rent Expense, Net [Abstract]
Operating lease rental expense	$ 2

Unit-Based Compensation (Narrat

Unit-Based Compensation (Narrative) (Details)	12 Months Ended			36 Months Ended
	Dec. 31, 2016shares	Dec. 31, 2015shares	Dec. 31, 2014shares	Dec. 31, 2016director	Sep. 30, 2013shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of non-employee directors | director				3
Phillips 66 Partners LP 2013 Incentive Compensation Plan | Phantom Units | Non Employee Directors
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of phantom units granted (in shares)	4,880	2,343	4,161
Phillips 66 Partners LP 2013 Incentive Compensation Plan | Common Units | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of common units that may be delivered under the ICP Plan (in shares)					2,500,000

Income Taxes (Summary of Income

Income Taxes (Summary of Income Taxes) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015		Dec. 31, 2014
Income Taxes
Current	$ 2	$ 0		$ 1
Deferred	0	0		0
Total	$ 2	$ 0	[1]	$ 1	[1]
[1]	Prior-period financial information has been retrospectively adjusted for acquisitions of businesses under common control.

Income Taxes (Narrative) (Detai

Income Taxes (Narrative) (Details) - USD ($)	Dec. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Investment [Line Items]
Deferred tax liability		$ 2,000,000
Deferred tax asset	$ 1,000,000		$ 1,000,000
Effective tax rate, percentage (less than)		1.00%	1.00%	1.00%
Unrecognized tax benefits	0	$ 0	$ 0
Fractionator Acquisitions and Eagle Acquisition | Phillips 66 | General Partner
Investment [Line Items]
Deferred tax liability recorded in equity account	$ 1,000,000

Cash Flow Information (Narrativ

Cash Flow Information (Narrative) (Details) - USD ($)

Oct. 14, 2016

May 10, 2016

Mar. 01, 2016

Dec. 01, 2015

Mar. 02, 2015

Dec. 01, 2014

Nov. 30, 2014

Mar. 01, 2014

Feb. 28, 2014

Dec. 31, 2014

May 10, 2016

Dec. 31, 2016

Dec. 31, 2015

Dec. 31, 2014

Dec. 31, 2015

Business Acquisition [Line Items]

Historical book value of the net assets acquired

$ 990,000,000

Allocation of net investment—Predecessors and deemed net distributions to General Partner

1,109,000,000

Cash consideration deemed a distribution to our General Partner

119,000,000

$ 146,000,000

Consideration reflected as a payable to Phillips 66

12,000,000

4,000,000

[1]

$ 4,000,000

[1]

Gold Line/Medford acquisition

Business Acquisition [Line Items]

Historical book value of the net assets acquired

0

0

[1]

$ 138,000,000

[1]

Bayway Ferndale Cross-Channel acquisition

Business Acquisition [Line Items]

Historical book value of the net assets acquired

0

0

[1]

28,000,000

[1]

General Partner

Business Acquisition [Line Items]

Allocation of net investment—Predecessors and deemed net distributions to General Partner

119,000,000

Cash consideration deemed a distribution to our General Partner

[2]

119,000,000

146,000,000

[1]

262,000,000

[1]

General Partner | Phillips 66 | Gold Line/Medford And Bayway/Ferndale/Cross-Channel Acquisitions

Business Acquisition [Line Items]

Value assigned to common and general partner units issued to Phillips 66

0

0

0

General Partner | Phillips 66 | Gold Line/Medford acquisition

Business Acquisition [Line Items]

Cash consideration deemed a distribution to our General Partner

$ 262,000,000

Note payable assumed deemed a noncash distribution to General Partner

160,000,000

Reduction in our General Partner’s capital balance

422,000,000

General Partner | Phillips 66 | Bayway Ferndale Cross-Channel acquisition

Business Acquisition [Line Items]

Reduction in our General Partner’s capital balance

$ 119,000,000

Common Units | Limited Partner | Phillips 66 | Gold Line/Medford And Bayway/Ferndale/Cross-Channel Acquisitions

Business Acquisition [Line Items]

Value assigned to common and general partner units issued to Phillips 66

0

0

0

Phillips 66 | Phillips 66

Business Acquisition [Line Items]

Historical carrying value of assets transferred

$ 71,000,000

Phillips 66 | Phillips 66 | Eagle Acquisition

Business Acquisition [Line Items]

Historical book value of the net assets acquired

990,000,000

Historical carrying value of assets transferred

$ 990,000,000

1,109,000,000

Cash paid (an investing cash outflow)

$ 1,109,000,000

Total consideration

$ 1,305,000,000

Phillips 66 | Phillips 66 | Sweeny Frac Remaining Seventy Five Percent And Standish Pipeline Acquisition

Business Acquisition [Line Items]

Historical carrying value of assets transferred

$ 871,000,000

Note payable assumed attributable to historical book value

656,000,000

Entities under common control, assumption of debt balance assigned to assets received

19,000,000

Change in capital expenditure accruals

225,000,000

Total consideration

775,000,000

Phillips 66 | Phillips 66 | Sweeny Fractionator Acquisition

Business Acquisition [Line Items]

Historical carrying value of assets transferred

$ 283,000,000

Note payable assumed attributable to historical book value

$ 212,000,000

Entities under common control, percentage of voting interests received

25.00%

Change in capital expenditure accruals

$ 212,000,000

Total consideration

236,000,000

Phillips 66 | Phillips 66 | Gold Line/Medford acquisition

Business Acquisition [Line Items]

Historical book value of the net assets acquired

138,000,000

Historical carrying value of assets transferred

$ 138,000,000

Cash paid (an investing cash outflow)

400,000,000

Total consideration

$ 700,000,000

Phillips 66 | Phillips 66 | Bayway Ferndale Cross-Channel acquisition

Business Acquisition [Line Items]

Historical book value of the net assets acquired

160,000,000

Note payable assumed attributable to historical book value

125,000,000

Cash paid (an investing cash outflow)

28,000,000

$ 28,000,000

Cash consideration for assets

35,000,000

Consideration reflected as a payable to Phillips 66

7,000,000

7,000,000

Change in capital expenditure accruals

244,000,000

Total consideration

$ 340,000,000

Phillips 66 | General Partner | Phillips 66 | Eagle Acquisition

Business Acquisition [Line Items]

Allocation of net investment—Predecessors and deemed net distributions to General Partner

(119,000,000)

Phillips 66 | Common Partner And General Partner | Phillips 66 | Sweeny Frac Remaining Seventy Five Percent And Standish Pipeline Acquisition

Business Acquisition [Line Items]

Value assigned to common and general partner units issued to Phillips 66

$ 196,000,000

Phillips 66 | Common Partner And General Partner | Phillips 66 | Sweeny Fractionator Acquisition

Business Acquisition [Line Items]

Value assigned to common and general partner units issued to Phillips 66

$ 71,000,000

Palermo Rail Terminal Project | Phillips 66 | Phillips 66

Business Acquisition [Line Items]

Historical carrying value of assets transferred

42,000,000

Cash paid (an investing cash outflow)

27,000,000

Cash consideration for assets

28,000,000

Consideration reflected as a payable to Phillips 66

1,000,000

1,000,000

Change in capital expenditure accruals

8,000,000

Palermo Rail Terminal Project | Phillips 66 | Common Partner And General Partner | Phillips 66

Business Acquisition [Line Items]

Aggregate allocated value of units issued

6,000,000

Eagle Ford Gathering System Project | Phillips 66 | Phillips 66

Business Acquisition [Line Items]

Cash paid (an investing cash outflow)

6,000,000

Cash consideration for assets

12,000,000

Consideration reflected as a payable to Phillips 66

6,000,000

$ 6,000,000

Total consideration

$ 12,000,000

Sand Hills/Southern Hills/ Explorer

Business Acquisition [Line Items]

Historical book value of the net assets acquired

$ 0

$ 734,000,000

[1]

$ 0

[1]

Sand Hills/Southern Hills/ Explorer | General Partner | Phillips 66

Business Acquisition [Line Items]

Cash consideration deemed a distribution to our General Partner

$ 146,000,000

Sand Hills/Southern Hills/ Explorer | Phillips 66 | Phillips 66

Business Acquisition [Line Items]

Historical book value of the net assets acquired

734,000,000

Cash paid (an investing cash outflow)

880,000,000

Total consideration

$ 1,010,000,000

Bayou Bridge Pipeline | Phillips 66 | Phillips 66

Business Acquisition [Line Items]

Value assigned to common and general partner units issued to Phillips 66

$ 35,000,000

Cash paid (an investing cash outflow)

35,000,000

Total consideration

$ 70,000,000

[1]

Prior-period financial information has been retrospectively adjusted for acquisitions of businesses under common control.

[2]

See Note 18— Cash Flow Information

Cash Flow Information (Summary

Cash Flow Information (Summary of Cash Flow Information) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015		Dec. 31, 2014
Capital Expenditures and Investments
Capital expenditures attributable to Predecessors	$ 96	$ 690		$ 707
Capital expenditures and investments attributable to the Partnership	461	205		66
Total capital expenditures and investments	557	895		773
Capital Expenditures and Investments
Cash capital expenditures and investments	584	948	[1]	659	[1]
Change in capital expenditure accruals	27	53		(114)
Other Noncash Investing and Financing Activities
Contributions of net assets into joint ventures	0	43		0
Certain liabilities of acquired assets retained by Phillips 66	50	0		15
Cash Payments
Interest and debt expense	$ 40	$ 18		$ 3
[1]	Prior-period financial information has been retrospectively adjusted for acquisitions of businesses under common control.

Other Financial Information (De

Other Financial Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015		Dec. 31, 2014
Interest and Debt Expense
Incurred, Debt	$ 56	$ 65		$ 12
Incurred, Other	1	1		0
Incurred, Total	57	66		12
Capitalized	(5)	(32)		(7)
Expensed	52	34	[1]	5	[1]
Other Income
Co-venturer contractual make-whole payments	1	6		0
Total other income	$ 1	$ 6	[1]	$ 0	[1]
[1]	Prior-period financial information has been retrospectively adjusted for acquisitions of businesses under common control.

Related Party Transactions (Sum

Related Party Transactions (Summary of Related Party Charges) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Related Party Transactions [Abstract]
Operating and maintenance expenses	$ 122	$ 95	$ 77
General and administrative expenses	56	58	52
Interest and debt expense	3	2	5
Total	$ 181	$ 155	$ 134

Related Party Transactions (Nar

Related Party Transactions (Narrative) (Details) - USD ($) $ in Millions	7 Months Ended	12 Months Ended		19 Months Ended
	Feb. 28, 2014	Dec. 31, 2016	Mar. 01, 2015	Oct. 13, 2016
Phillips 66 | Amended Omnibus Agreement | Phillips 66
Related party agreements and fees
Administrative fees expense by month	$ 1	$ 7	$ 2	$ 3

Selected Quarterly Financial 79

Selected Quarterly Financial Data (Unaudited) (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	[1]	Dec. 31, 2014	[1]
Selected Quarterly Financial Information [Abstract]
Total Revenues	$ 228	$ 222	$ 219	$ 204	$ 203	$ 174	$ 168	$ 150
Income Before Income Taxes	103	112	101	94	95	78	72	61	$ 410	$ 306		$ 246
Net income	102	112	100	94	95	78	72	61	408	306	[2]	245	[2]
Net income attributable to the Partnership	98	83	68	52	64	53	42	35	301	194		116
Limited partners’ interest in net income attributable to the Partnership	$ 69	$ 57	$ 47	$ 36	$ 50	$ 41	$ 33	$ 29	$ 209	$ 153		$ 108
Per Common Unit, Net Income Attributable to the Partnership Basic and DIluted (in usd per share)	$ 0.65	$ 0.57	$ 0.51	$ 0.44	$ 0.61	$ 0.50	$ 0.50	$ 0.39
[1]	Prior-period financial information has been retrospectively adjusted for acquisitions of businesses under common control.
[2]	*Prior-period financial information has been retrospectively adjusted for acquisitions of businesses under common contro