Shell Midstream Partners (SHLX) 10-Q 5 May 16 2016 Q1 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2016	May. 05, 2016
Entity Information [Line Items]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Mar. 31, 2016
Document Fiscal Year Focus	2,016
Document Fiscal Period Focus	Q1
Trading Symbol	SHLX
Entity Registrant Name	Shell Midstream Partners, L.P.
Entity Central Index Key	1,610,466
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Common Units
Entity Information [Line Items]
Entity Common Stock, Shares Outstanding (in shares)		97,767,376
Subordinated Units
Entity Information [Line Items]
Entity Common Stock, Shares Outstanding (in shares)		67,475,068

UNAUDITED CONDENSED CONSOLIDATE

UNAUDITED CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Millions	Mar. 31, 2016	Dec. 31, 2015
Current assets
Cash and cash equivalents	$ 138	$ 93
Accounts receivable – third parties, net	18.5	18.8
Accounts receivable – related parties	8.1	9.8
Allowance oil	4.6	4.2
Prepaid expenses	3.4	5
Total current assets	172.6	130.8
Equity method investments	181.9	185
Property, plant and equipment, net	392.1	392.9
Cost investment	6.2	6.2
Total assets	752.8	714.9
Current liabilities
Accounts payable – third parties	1.4	0.2
Accounts payable – related parties	8.5	9.3
Deferred revenue – third parties	2.4	2.6
Deferred revenue – related parties	2	3.6
Accrued liabilities – third parties	6.3	6.8
Accrued liabilities – related parties	2.8	3.6
Total current liabilities	23.4	26.1
Debt payable – related party	47.7	457.6
Lease liability – related party	23.7	22.8
Asset retirement obligations	1.4	1.3
Total noncurrent liabilities	72.8	481.7
Total liabilities	$ 96.2	$ 507.8
Commitments and Contingencies
EQUITY
Total partners' capital	$ 547.9	$ 98.7
Noncontrolling interest	108.7	108.4
Total equity	656.6	207.1
Total liabilities and equity	752.8	714.9
Shell Pipeline Company L P
EQUITY
General partner unitholders	(988.6)	(998.6)
Common Units | General Public
EQUITY
Limited partner unitholders	2,067.6	1,637.5
Common Units | Shell Pipeline Company L P
EQUITY
Limited partner unitholders	(128.2)	(130.4)
Subordinated Units | Shell Pipeline Company L P
EQUITY
Limited partner unitholders	(402.9)	(409.8)
Total equity	$ (402.9)	$ (409.8)

UNAUDITED CONDENSED CONSOLIDAT3

UNAUDITED CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - shares	Mar. 31, 2016	Dec. 31, 2015
Limited partners' capital account, units outstanding (in units)	97,767,376
Shell Pipeline Company L P
General partners' capital account, units issued (in units)	3,372,295	3,098,825
General partners' capital account, units outstanding (in units)	3,372,295	3,098,825
Common unitholders | General Public
Limited partners' capital account, units issued (in units)	76,292,308	62,892,308
Limited partners' capital account, units outstanding (in units)	76,292,308	62,892,308
Common unitholders | Shell Pipeline Company L P
Limited partners' capital account, units issued (in units)	21,475,068	21,475,068
Limited partners' capital account, units outstanding (in units)	21,475,068	21,475,068
Subordinated Units | Shell Pipeline Company L P
Limited partners' capital account, units issued (in units)	67,475,068	67,475,068
Limited partners' capital account, units outstanding (in units)	67,475,068	67,475,068

UNAUDITED CONDENSED CONSOLIDAT4

UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Revenue
Third parties	$ 51.3	$ 46.5	[1]
Related parties	25.4	19.4	[1]
Total revenue	76.7	65.9	[1]
Costs and expenses
Operations and maintenance – third parties	9.4	9.4	[1]
Operations and maintenance – related parties	5.4	5.2	[1]
General and administrative – third parties	2.1	1.7	[1]
General and administrative – related parties	5.7	5.6	[1]
Depreciation, amortization and accretion	5.9	5.2	[1],[2]
Property and other taxes	3.2	3.4	[1]
Total costs and expenses	31.7	30.5	[1]
Operating income	45	35.4	[1]
Income from equity investments	23.2	12.5	[1]
Dividend income from investment	2.8	1.6	[1]
Investment and dividend income	26	14.1	[1]
Interest expense, net	3	0.2	[1]
Income before income taxes	68	49.3	[1]
Income tax expense	0	0.2	[1]
Net income	68	49.1	[1],[2]
Less: Net income attributable to Parent	0	7.7	[1]
Net income attributable to the Partnership	55.3	23.6	[1]
Limited Partners' interest in net income attributable to the Partnership	$ 52.2	$ 23.1	[1]
Net income per Limited Partner Unit - Basic and Diluted (in dollars):
Distributions declared per limited partner unit (in dollars per unit)	$ 0.2350	$ 0.1750	[1]
General Partner
Costs and expenses
Net income attributable to the Partnership	$ 3.1	$ 0.5
General Partner | Shell Pipeline Company L P
Costs and expenses
Net income	3.1
General partner's interest in net income attributable to the Partnership	3.1	0.5	[1]
Limited Partners' Common Units
Costs and expenses
Net income attributable to the Partnership	$ 30.5	$ 11.6
Net income per Limited Partner Unit - Basic and Diluted (in dollars):
Net income per Limited Partner Unit (in dollars per share)	$ 0.36	$ 0.17	[1]
Limited Partner's Subordinated Units
Costs and expenses
Net income attributable to the Partnership	$ 21.7	$ 11.5
Net income per Limited Partner Unit - Basic and Diluted (in dollars):
Net income per Limited Partner Unit (in dollars per share)	$ 0.32	$ 0.17	[1]
Common unitholders - public
Costs and expenses
Net income	$ 23.6
Weighted average Limited Partner Units outstanding - Basic and Diluted (in millions):
Weighted average limited partner units - Common (in shares)	63.4	46	[1]
Common unitholders - public | Shell Pipeline Company L P
Costs and expenses
Net income	$ 6.9
Common Units | Shell Pipeline Company L P
Weighted average Limited Partner Units outstanding - Basic and Diluted (in millions):
Weighted average limited partner units - Common (in shares)	21.5	21.5	[1]
Subordinated Units
Weighted average Limited Partner Units outstanding - Basic and Diluted (in millions):
Weighted average limited partner units - Subordinated (in shares)	67.5	67.5	[1]
Subordinated Units | Shell Pipeline Company L P
Costs and expenses
Net income	$ 21.7
Noncontrolling Interest
Costs and expenses
Net income	12.7
Less: Net income attributable to noncontrolling interests	$ 12.7	$ 17.8	[1]
[1]	(1) The 2015 financial information has been retrospectively adjusted for the acquisition of the Shell Auger and Lockport Operations.
[2]	(1) The 2015 financial information has been retrospectively adjusted for the acquisition of the Shell Auger and Lockport Operations.

UNAUDITED CONDENSED CONSOLIDAT5

UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	[1]
Cash flows from operating activities
Net income	$ 68	$ 49.1	[2]
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation, amortization and accretion	5.9	5.2	[2]
Amortization of debt interest cost	0.1	0	[2]
Income in excess of distributions	(1)	0
Changes in operating assets and liabilities
Accounts receivable	0.3	11.2
Allowance oil	(0.4)	0.7
Prepaid expenses	1.6	1.4
Accounts payable	(0.2)	(6.6)
Deferred revenue	(1.8)	6.9
Accrued liabilities	(0.1)	4.7
Net cash provided by operating activities	72.4	72.6
Cash flows from investing activities
Capital expenditures	(4.7)	(2.6)
Return of investment	4.1	3.2
Payment of pre-IPO distributions from investments to SPLC	0	(11.9)
Net cash used in investing activities	(0.6)	(11.3)
Cash flows from financing activities
Net proceeds from public offerings	420.4	0
Contributions from general partner	8.7	0
Repayment of credit facilities	(410)	0
Distributions to noncontrolling interest	(12.4)	(25.1)
Distributions to unitholders and general partner	(35.3)	(14.4)
Other contribution from Parent	1.8	0
Net distribution to Parent	0	(15.1)
Net cash used in financing activities	(26.8)	(54.6)
Net increase in cash and cash equivalents	45	6.7
Cash and cash equivalents at beginning of the period	93	150.2
Cash and cash equivalents at end of the period	138	156.9
Non-cash investing transactions
Change in accrued capital expenditures	0.4	(0.5)
Other non-cash contributions from Parent	$ 0.1	$ 0
[1]	(1) The 2015 financial information has been retrospectively adjusted for the acquisition of the Shell Auger and Lockport Operations.
[2]	(1) The 2015 financial information has been retrospectively adjusted for the acquisition of the Shell Auger and Lockport Operations.

UNAUDITED CONDENSED CONSOLIDAT6

UNAUDITED CONDENSED CONSOLIDATED STATEMENT OF CHANGES IN EQUITY - 3 months ended Mar. 31, 2016 - USD ($) $ in Millions	Total	Noncontrolling Interest	Common unitholders - public	Common unitholders - publicShell Pipeline Company L P	Subordinated UnitsShell Pipeline Company L P	General PartnerShell Pipeline Company L P
Beginning Balance at Dec. 31, 2015	$ 207.1	$ 108.4	$ 1,637.5	$ (130.4)	$ (409.8)	$ (998.6)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	68	12.7	23.6	6.9	21.7	3.1
Net proceeds from public offerings	420.4		420.4
Contributions from general partner	8.7					8.7
Other contribution from parent	0.1					0.1
Distributions to unitholders and general partner	(35.3)		(13.9)	(4.7)	(14.8)	(1.9)
Distribution to noncontrolling interest	(12.4)	(12.4)
Ending Balance at Mar. 31, 2016	$ 656.6	$ 108.7	$ 2,067.6	$ (128.2)	$ (402.9)	$ (988.6)

Description of the Business and

Description of the Business and Basis of Presentation	3 Months Ended
	Mar. 31, 2016
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Description of the Business and Basis of Presentation	Description of Business and Basis of Presentation Shell Midstream Partners, L.P. (“we,” “us,” “our” or the “Partnership”) is a Delaware limited partnership formed on March 19, 2014 to own and operate assets, including certain assets received from Shell Pipeline Company LP (“SPLC”). We conduct our operations through our wholly owned subsidiary, Shell Midstream Operating, LLC (“Operating Company”). Our general partner is Shell Midstream Partners GP LLC (“general partner”). References to “Shell” or “Parent” refer collectively to Royal Dutch Shell plc (“RDS”) and its controlled affiliates, other than us, our subsidiaries and our general partner. Description of Business We are a fee-based, growth-oriented master limited partnership formed by Shell to own, operate, develop and acquire pipelines and other midstream assets. Our assets consist of interests in entities that own crude oil and refined products pipelines serving as key infrastructure to transport onshore and offshore crude oil production to Gulf Coast refining markets and to deliver refined products from those markets to major demand centers. As of March 31, 2016 , we own interests in four crude oil pipeline systems, two refined products systems and a crude storage terminal. The crude oil pipeline systems, which are held by Zydeco Pipeline Company LLC (“Zydeco”), Mars Oil Pipeline Company (“Mars”), Poseidon Oil Pipeline Company, LLC (“Poseidon”) and the Auger Pipeline System (“Auger”), are strategically located along the Texas and Louisiana Gulf Coast and in the Gulf of Mexico. These systems link major onshore and offshore production areas with key refining markets. The refined products pipeline systems, which are held by Bengal Pipeline Company LLC (“Bengal”) and Colonial Pipeline Company (“Colonial”), connect Gulf Coast and southeastern U.S. refineries to major demand centers from Alabama to New York. The crude storage terminal, called the Lockport Terminal (“Lockport”), is located southwest of Chicago and serves Midwest refineries. Auger and Lockport are owned by our wholly owned subsidiary, Pecten Midstream LLC (“Pecten”). As of March 31, 2016 , we own a 100% interest in Pecten, a 62.5% interest in Zydeco, a 28.6% interest in Mars, a 36.0% interest in Poseidon, a 49.0% interest in Bengal and a 3.0% interest in Colonial. Each of Pecten and Zydeco is consolidated within our condensed consolidated financial statements as a subsidiary. The 37.5% ownership interest in Zydeco retained by SPLC is reflected as noncontrolling interest in our condensed consolidated financial statements. We account for each of our investments in Mars, Bengal and Poseidon using the equity method of accounting, and we account for our investment in Colonial using the cost method of accounting. We generate the majority of our revenue under long-term agreements by charging fees for the transportation and storage of crude oil and refined products through our pipelines and storage tanks. Our operations consist of one reportable segment. Basis of Presentation Our condensed consolidated financial statements include all majority owned and non-majority owned subsidiaries required to be consolidated under generally accepted accounting principles in the United States (“GAAP”). Our reporting currency is U.S. dollars, and all references to dollars are U.S. dollars. The accompanying unaudited condensed consolidated financial statements and related notes have been prepared in accordance with GAAP for interim financial information and with the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and notes required by GAAP for complete annual financial statements. The year-end condensed consolidated balance sheet data was derived from audited financial statements, but does not include all disclosures required by GAAP. During interim periods, we follow the accounting policies disclosed in our Annual Report on Form 10-K for the year ended December 31, 2015 (our “2015 Annual Report”), filed with the United States Securities and Exchange Commission (“SEC”). The unaudited condensed consolidated financial statements for the three months ended March 31, 2016 and 2015 include all adjustments we believe are necessary for a fair statement of the results for the interim periods. These adjustments are of a normal recurring nature unless otherwise disclosed. Operating results for the three months ended March 31, 2016 are not necessarily indicative of the results that may be expected for the full year ended December 31, 2016 . These unaudited condensed consolidated financial statements and other information included in this Quarterly Report should be read in conjunction with our consolidated financial statements and notes thereto included in our 2015 Annual Report. The March 31, 2015 condensed consolidated financial statements have been retrospectively adjusted for the acquisition of the Shell Auger and Lockport Operations. These retrospective adjustments include expense allocations for certain functions historically performed by our Parent on behalf of the Shell Auger and Lockport Operations, including allocations of general corporate expenses related to finance, legal, information technology, human resources, communications, ethics and compliance, shared services, employee benefits and incentives, insurance, and share-based compensation. Prior to the contribution of fixed assets and certain agreements on October 1, 2015 related to the Shell Auger and Lockport Operations, the cash generated and used by these operations was deposited to SPLC’s centralized account which was comingled with the cash of other pipeline entities controlled by SPLC. SPLC funded these operating and investing activities as needed. Accordingly, we did not record any cash and cash equivalents held by SPLC on behalf of the Shell Auger and Lockport Operations for any period prior to October 1, 2015. We reflected the cash generated by these operations and expenses paid by SPLC on behalf of these operations as Net distributions to Parent within the accompanying condensed consolidated statements of cash flows. The March 31, 2015 condensed consolidated financial statements do not reflect the increased interests in Zydeco and Colonial, or the interest in Poseidon, which were acquired through transactions subsequent to March 31, 2015. These asset acquisitions were accounted for prospectively. Summary of Significant Accounting Policies The accounting policies are set forth in Note 2 of the Notes to Consolidated Financial Statements in our 2015 Annual Report. There have been no significant changes to these policies during the three months ended March 31, 2016 . Recent Accounting Pronouncements For additional information on accounting pronouncements issued prior to March 2016, refer to Note 2 of the Notes to Consolidated Financial Statements in our 2015 Annual Report. In February 2015, the FASB issued an accounting standards update (ASU 2015-02) making targeted changes to the current consolidation guidance. The new standard changes the considerations related to substantive rights, related parties, and decision making fees when applying the variable interest entity consolidation model and eliminates certain guidance for limited partnerships and similar entities under the voting interest consolidation model. The update is effective for fiscal years and interim periods within those fiscal years beginning after December 15, 2015. Adoption of this standard did not have a material impact on the consolidated results of operations, financial position or cash flows. In March 2016, the FASB issued accounting standards update (ASU 2016-07) to topic 323, Investments – Equity Method and Joint Ventures, to eliminate the need for an entity to retroactively adopt the equity method of accounting when an investment becomes qualified for the use of the equity method of accounting due to an increase in level of ownership or degree of influence. This provision is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2016. We are currently evaluating the effect of adoption of this guidance on our financial position or results of operations.

Retrospective Adjustment

Retrospective Adjustment	3 Months Ended
	Mar. 31, 2016
Business Combinations [Abstract]
Retrospective Adjustment	Retrospective Adjustment On November 17, 2015, we acquired from SPLC a 100% interest in Pecten, which holds the Shell Auger and Lockport Operations. The acquisition of Pecten was a transfer of a business between entities under common control, which requires it to be accounted for as if the transfer had occurred at the beginning of the period of transfer, with prior periods retrospectively adjusted to furnish comparative financial information. Accordingly, the accompanying financial statements and notes for the three months ended March 31, 2015 have been retrospectively adjusted to include the historical results of the business of Auger and Lockport (the “Shell Auger and Lockport Operations”) prior to the acquisition's effective date of October 1, 2015 and are reflected in “Net Parent Investment.” See Note 2 – Summary of Significant Accounting Policies – Common Control Transactions in the Notes to Consolidated Financial Statements of our 2015 Annual Report for further discussion of how we account for the acquisition of assets and businesses under common control. See Note 3 – Acquisitions in the Notes to Consolidated Financial Statements of our 2015 Annual Report for further discussion of this acquisition. The following tables present our condensed consolidated statement of income and condensed consolidated statement of cash flows for the three months ended March 31, 2015 giving effect to the acquisition of Pecten. The results of Pecten prior to the effective date of the acquisition are included in the “Shell Auger and Lockport Operations” and the consolidated results are included in “Consolidated Results” within the tables below : Condensed Consolidated Statement of Income Three Months Ended March 31, 2015 Shell Auger Shell Midstream and Lockport Consolidated Partners, L.P. (1) Operations (2) Results Revenue Third parties $ 41.3 $ 5.2 $ 46.5 Related parties 10.4 9.0 19.4 Total revenue 51.7 14.2 65.9 Costs and expenses Operations and maintenance – third parties 6.9 2.5 9.4 Operations and maintenance – related parties 3.9 1.3 5.2 General and administrative – third parties 1.6 0.1 1.7 General and administrative – related parties 5.0 0.6 5.6 Depreciation, amortization and accretion 3.4 1.8 5.2 Property and other taxes 3.2 0.2 3.4 Total costs and expenses 24.0 6.5 30.5 Operating income 27.7 7.7 35.4 Income from equity investments 12.5 — 12.5 Dividend income from investment 1.6 — 1.6 Investment and dividend income 14.1 — 14.1 Interest expense, net 0.2 — 0.2 Income before income taxes 41.6 7.7 49.3 Income tax expense 0.2 — 0.2 Net income 41.4 7.7 49.1 Less: Net income attributable to Parent — 7.7 7.7 Less: Net income attributable to noncontrolling interests 17.8 — 17.8 Net income attributable to the Partnership $ 23.6 $ — $ 23.6 (1) As previously reported in our Quarterly Report on Form 10-Q for the three months ended March 31, 2015. (2) Results of the Shell Auger and Lockport Operations from January 1, 2015 through March 31, 2015. Condensed Consolidated Statement of Cash Flows Three Months Ended March 31, 2015 Shell Auger Shell Midstream and Lockport Consolidated Partners, L.P. (1) Operations (2) Results Cash flows from operating activities Net income $ 41.4 $ 7.7 $ 49.1 Adjustments to reconcile net income to net cash provided by operating activities Depreciation, amortization and accretion 3.4 1.8 5.2 Changes in operating assets and liabilities Accounts receivable 6.1 5.1 11.2 Allowance oil 0.3 0.4 0.7 Prepaid expenses 1.1 0.3 1.4 Accounts payable (6.2 ) (0.4 ) (6.6 ) Deferred revenue 6.9 — 6.9 Accrued liabilities 4.4 0.3 4.7 Net cash provided by operating activities 57.4 15.2 72.6 Cash flows from investing activities Capital expenditures (2.5 ) (0.1 ) (2.6 ) Return of investment 3.2 — 3.2 Payment of pre-IPO distributions from investments to SPLC (11.9 ) — (11.9 ) Net cash used in investing activities (11.2 ) (0.1 ) (11.3 ) Cash flows from financing activities Distributions to noncontrolling interest (25.1 ) — (25.1 ) Distributions to unitholders and general partner (14.4 ) — (14.4 ) Net distributions to Parent — (15.1 ) (15.1 ) Net cash used in financing activities (39.5 ) (15.1 ) (54.6 ) Net increase in cash and cash equivalents 6.7 — 6.7 Cash and cash equivalents at beginning of the period 150.2 — 150.2 Cash and cash equivalents at end of the period $ 156.9 $ — $ 156.9 Supplemental Cash Flow Information Non-cash investing transactions Change in accrued capital expenditures $ (0.5 ) $ — $ (0.5 ) (1) As previously reported in our Quarterly Report on Form 10-Q for the three months ended March 31, 2015. (2) Results of the Shell Auger and Lockport Operations from January 1, 2015 through March 31, 2015.

Related Party Transactions

Related Party Transactions	3 Months Ended
	Mar. 31, 2016
Related Party Transactions [Abstract]
Related Party Transactions	Related Party Transactions Related party transactions include transactions with SPLC and Shell, including those entities in which Shell has an ownership interest but does not have control. Commercial Agreements For a discussion of the following related party commercial agreements, see Note 4—Related Party Transactions in our 2015 Annual Report. Omnibus Agreement Pursuant to the omnibus agreement we entered into on November 3, 2014 with SPLC (the “Omnibus Agreement”): • we are required to pay an annual general and administrative fee for the provision of certain services by SPLC; • our obligation to reimburse SPLC for certain direct or allocated costs and expenses incurred by SPLC on our behalf; • our obligation to reimburse SPLC for all expenses incurred by SPLC as a result of us becoming and continuing as a publicly traded entity; we will reimburse our general partner for these expenses to the extent the fees relating to such services are not included in the general and administrative fee; and • Shell grants a license to us with respect to the use of certain Shell trademarks and trade names. Expenses related to our obligations under the Omnibus Agreement during the three months ended March 31, 2016 and 2015 are reflected in related party general and administrative expenses disclosed below. Under the Omnibus Agreement, certain of our costs are indemnified by SPLC. The legal and environmental indemnifications are subject to individual $0.5 million deductibles, while we have an aggregate limit of $15.0 million . During the three months ended March 31, 2016 and 2015, we did not make any claims for indemnification. Zydeco In connection with our initial public offering (“IPO”) of common units, and the formation of Zydeco, we entered into various agreements with SPLC and Shell. For a discussion of these agreements, see Note 4—Related Party Transactions in our 2015 Annual Report. Noncontrolling Interest Noncontrolling interest consists of SPLC's 37.5% retained ownership in Zydeco as of March 31, 2016 and December 31, 2015 . During the three months ended March 31, 2016 and 2015, SPLC owned a 37.5% and 57.0% noncontrolling interest in Zydeco, respectively. Other Related Party Balances Other related party balances consist of the following: March 31, 2016 December 31, 2015 Accounts receivable $ 8.1 $ 9.8 Prepaid expenses 1.9 2.8 Accounts payable (1) 8.5 9.3 Deferred revenue 2.0 3.6 Accrued liabilities 2.8 3.6 Debt payable (2) 47.7 457.6 Lease liability 23.7 22.8 (1) Accounts payable reflects amounts owed to SPLC for reimbursement of third-party expenses incurred by SPLC for our benefit. (2) Debt payable reflects borrowings outstanding after taking into account unamortized debt issuance costs of $0.5 million and $0.6 million as of March 31, 2016 and December 31, 2015 , respectively. Related Party Revolving Credit Facilities We have entered into two revolving credit facilities with Shell Treasury Centre (West) Inc. (“STCW”): the Five -Year Revolver and the 364 -Day Revolver. Zydeco entered into a senior unsecured revolving credit facility with STCW. For definitions and additional information regarding these credit facilities, see Note 7—Related Party Debt . Related Party Revenues and Expenses We provide crude oil transportation and storage services to related parties under long-term contracts. We entered into these contracts in the normal course of our business and the services are based on the same terms as those provided to third parties. Our transportation services revenue from related parties was $23.3 million and $17.6 million for the three months ended March 31, 2016 and 2015, respectively. Revenues related to storage services from related parties were $2.1 million and $1.8 million for the three months ended March 31, 2016 and 2015, respectively. During the three months ended March 31, 2016 , Zydeco, Mars, Bengal, Poseidon and Colonial paid cash distributions to us of $49.7 million , of which $20.6 million related to Zydeco. For a discussion of services performed by SPLC and Shell on our behalf, see Note 1—Description of Business and Basis of Presentation—Basis of Presentation . During the three months ended March 31, 2016 and 2015, we were allocated $1.3 million and $ 1.2 million , respectively, of indirect general corporate expenses incurred by SPLC and Shell which are included within general and administrative expenses in the condensed consolidated statements of income. Beginning July 1, 2014, Zydeco entered into an operating and management agreement with SPLC (the “Zydeco Management Agreement”) under which SPLC provides general management and administrative services to us. Zydeco no longer receives allocated corporate expenses from SPLC or Shell. Zydeco will continue to receive direct and allocated field and regional expenses, including payroll expenses not covered under the Zydeco Management Agreement. In addition, beginning October 1, 2015, Pecten entered into an operating and management agreement under which we receive direct and allocated field and regional expenses from SPLC (the “Pecten Management Agreement”). Under the Zydeco Management Agreement and the Pecten Management Agreement, these expenses are primarily allocated to us on the basis of headcount, labor or other measure. These expense allocations have been determined on a basis that both SPLC and we consider to be a reasonable reflection of the utilization of services provided or the benefit received by us during the periods presented. For a discussion of these agreements and other agreements between Pecten and SPLC, see Note 4—Related Party Transactions in our 2015 Annual Report. The majority of our insurance coverage is provided by Shell with the remaining coverage by third-party insurers. The related party portion of insurance expense for the three months ended March 31, 2016 and 2015 was $0.9 million and $0.8 million , respectively. The following table shows related party expenses, including personnel costs described above, incurred by Shell and SPLC on our behalf that are reflected in the accompanying condensed consolidated statements of income for the indicated periods: Three months ended March 31, 2016 2015 Operations and maintenance - related parties $ 5.4 $ 5.2 General and administrative - related parties (1) 5.7 5.6 (1) For the three months ended March 31, 2016 and 2015, we incurred $1.9 million and $1.8 million , respectively, under the Zydeco Management Agreement, and $2.1 million for both periods under the Omnibus Agreement for the general and administrative fee. Pension and Retirement Savings Plans Employees who directly or indirectly support our operations participate in the pension, postretirement health and life insurance, and defined contribution benefit plans sponsored by Shell, which include other Shell subsidiaries. Our share of pension and postretirement health and life insurance costs, as well as our share of defined contribution benefit plan costs for the three months ended March 31, 2016 and 2015 were immaterial to the condensed consolidated financial statements. Pension and defined contribution benefit plan expenses are included in either general and administrative expenses or operations and maintenance expenses in the accompanying condensed consolidated statements of income, depending on the nature of the employee’s role in our operations. Equity and Cost Method Investments We have equity method investments in Mars, Bengal and Poseidon, as well as a cost investment in Colonial. SPLC also owns interests in some of these entities. In some cases we may make capital contributions or other payments to these entities. No such capital contributions were made for the three months ended March 31, 2016 and 2015. See Note 4—Equity Method Investments for additional details.

Equity Method Investments

Equity Method Investments	3 Months Ended
	Mar. 31, 2016
Equity Method Investments and Joint Ventures [Abstract]
Equity Method Investments	Equity Method Investments As of March 31, 2016 and December 31, 2015 , our equity method investments consist of a 28.6% interest in Mars, 49.0% interest in Bengal and 36.0% interest in Poseidon. Equity investments in affiliates comprise the following as of the dates indicated: March 31, 2016 (1) December 31, 2015 (2) Mars $ 85.0 $ 84.0 Bengal 74.7 75.6 Poseidon 22.2 25.4 $ 181.9 $ 185.0 (1) As of March 31, 2016, the equity investment exceeded our equity in the net assets of Mars and Poseidon by $11.3 million and $10.5 million , respectively. As of March 31, 2016, our equity investment balance in Bengal includes a gain from contribution, represented by a credit balance of $6.1 million . (2) As of December 31, 2015, the equity investment exceeded our equity in the net assets of Mars and Poseidon by $11.1 million and $10.3 million , respectively. As of December 31, 2015, our equity investment balance in Bengal includes a gain from contribution, represented by a credit balance of $6.0 million . Our equity investments in affiliates balance was affected by the following during the periods indicated: Three Months Ended March 31, 2016 Mars Bengal Poseidon Total Distributions received $ 9.9 $ 6.3 $ 10.1 $ 26.3 Income from equity investments (1) 10.9 5.4 6.9 23.2 Return of investment (2) — 0.9 3.2 4.1 Income in excess of distributions (3) (1.0 ) — — (1.0 ) Three Months Ended March 31, 2015 Mars Bengal Total Distributions received $ 8.6 $ 7.1 $ 15.7 Income from equity investments (1) 7.4 5.1 12.5 Return of investment (2) 1.2 2.0 3.2 (1) Differences in the basis of the investments and the separate net asset value of the investees, if any, are amortized into net income over the remaining useful lives of the underlying assets. For the three months ended March 31, 2016, amortization expense (income) for Mars, Bengal and Poseidon of $0.2 million , $(0.1) million and $0.2 million , respectively, is included in the condensed consolidated statement of income. For the three months ended March 31, 2015, amortization expense (income) for Mars and Bengal of $0.4 million and $(0.1) million , respectively, is included in the condensed consolidated statement of income. (2) Distributions received in excess of our income from equity investments is shown as a return of investment in our condensed consolidated statements of cash flows. (3) Income from equity investments in excess of distributions received is shown as income in excess of distributions in our condensed consolidated statements of cash flows. Summarized Financial Information The following tables present aggregated selected unaudited income statement data for our equity method investments in Mars, Bengal and Poseidon, on a 100% basis: Three Months Ended March 31, 2016 Mars Bengal Poseidon Statements of Income Total revenues $ 57.3 $ 17.4 $ 27.4 Total operating expenses 18.5 6.4 6.6 Operating income $ 38.8 $ 11.0 $ 20.8 Net income (1) $ 38.8 $ 11.0 $ 19.7 Three Months Ended March 31, 2015 Mars Bengal Statements of Income Total revenues $ 44.9 $ 16.3 Total operating expenses 17.6 6.1 Operating income $ 27.3 $ 10.2 Net income (1) $ 27.4 $ 10.2 (1) Difference between Operating income and Net income represents interest expense or interest income.

Property, Plant and Equipment

Property, Plant and Equipment	3 Months Ended
	Mar. 31, 2016
Property, Plant and Equipment [Abstract]
Property, Plant and Equipment	Property, Plant and Equipment Property, plant and equipment consist of the following as of the dates indicated: Depreciable Life March 31, 2016 December 31, 2015 Land — $ 1.4 $ 1.4 Building and improvements 10 - 40 years 19.6 19.5 Pipeline and equipment (1) 10 - 30 years 572.1 572.4 Other 5 - 25 years 6.0 5.6 599.1 598.9 Accumulated depreciation and amortization (2) (222.1 ) (216.2 ) 377.0 382.7 Construction in progress 15.1 10.2 Property, plant and equipment, net $ 392.1 $ 392.9 (1) As of March 31, 2016 and December 31, 2015, includes cost of $22.8 million related to assets under capital lease. (2) As of March 31, 2016 and December 31, 2015, includes accumulated depreciation of $0.5 million and $0.1 million related to assets under capital lease, respectively. Depreciation and amortization expense on property, plant and equipment of $5.9 million and $5.2 million is included in cost and expenses in the accompanying condensed consolidated statements of income for March 31, 2016 and 2015 , respectively. Depreciation and amortization expense on property, plant and equipment includes amounts pertaining to assets under capital lease.

Accrued Liabilities - Third Par

Accrued Liabilities - Third Parties	3 Months Ended
	Mar. 31, 2016
Payables and Accruals [Abstract]
Accrued Liabilities - Third Parties	Accrued Liabilities - Third Parties Accrued liabilities - third parties consist of the following as of the dates indicated: March 31, 2016 December 31, 2015 Transportation, project engineering $ 2.4 $ 3.0 Property taxes 2.8 0.3 FERC accrual — 1.7 Professional fees 0.3 1.2 Other accrued liabilities 0.8 0.6 Accrued liabilities - third parties $ 6.3 $ 6.8 For a discussion of accrued liabilities - related parties, see Note 3—Related Party Transactions .

Related Party Debt

Related Party Debt	3 Months Ended
	Mar. 31, 2016
Debt Disclosure [Abstract]
Related Party Debt	Related Party Debt Partnership's Revolving Credit Facility Agreements We have a five -year unsecured revolving credit facility with STCW with a borrowing capacity of $400.0 million (“ Five -Year Revolver”). On February 22, 2016, we and STCW amended and restated the Five -Year Revolver to provide that loans advanced under the facility have maturity dates selected by us up to October 31, 2019, the maturity date of the Five -Year Revolver. Borrowings under the Five -Year Revolver bear interest at the three-month LIBOR rate plus a margin. The weighted average interest rate for the three months ended March 31, 2016 was 1.9% . The weighted average interest rate includes drawn and undrawn interest fees, but does not consider the amortization of debt issuance costs or capitalized interest. We have a 364 -day unsecured revolving credit facility with STCW with a borrowing capacity of $180.0 million (“ 364 -Day Revolver”). On February 22, 2016, we amended and restated the 364 -Day Revolver with STCW to extend its maturity to March 1, 2017. Borrowings under the 364 -Day Revolver bear interest at the three-month LIBOR rate plus a margin. The weighted average interest rate for the three months ended March 31, 2016 was 1.7% . The weighted average interest rate includes drawn and undrawn interest fees, but does not consider the amortization of debt issuance costs or capitalized interest. Zydeco Revolving Credit Facility Agreement Zydeco has a senior unsecured revolving credit facility with STCW with a borrowing capacity of $30.0 million (the “Zydeco Revolver”) . Borrowings under the Zydeco Revolver bear interest at the three-month LIBOR rate plus a margin. Consolidated related party debt obligations comprise the following as of the dates indicated: March 31, 2016 December 31, 2015 Five-Year Revolver, variable rate, due October 31, 2019 (1) $ 48.2 $ 320.8 364-Day Revolver, variable rate, due March 1, 2017 (2) — 137.4 Zydeco Revolver, variable rate, due August 6, 2019 (3) — — Unamortized debt issuance costs (0.5 ) (0.6 ) Debt payable - related party $ 47.7 $ 457.6 (1) As of March 31, 2016 , availability under the $400.0 million Five -Year Revolver was $351.8 million . (2) As of March 31, 2016 , the entire $180.0 million capacity was available under the 364 -Day Revolver. (3) As of March 31, 2016 , the entire $30.0 million capacity was available under the Zydeco Revolver. On March 29, 2016, we used cash on hand and net proceeds from sales of common units to third parties to repay $ 272.6 million of borrowings outstanding under the Five-Year Revolver and all $ 137.4 million of borrowings outstanding under the 364-Day Revolver. As of March 31, 2016 , we were in compliance with the covenants contained in the Five-Year Revolver and the 364 -Day Revolver, and Zydeco was in compliance with the covenants contained in the Zydeco Revolver.

Equity

Equity	3 Months Ended
	Mar. 31, 2016
Equity [Abstract]
Equity	Equity At-the-Market Program On March 2, 2016, we commenced an “at-the-market” equity distribution program pursuant to which it may issue and sell common units for up to $300.0 million in gross proceeds. This program is registered with the SEC on an effective registration statement on Form S-3. During the quarter ended March 31, 2016, we completed the sale of 750,000 common units under this program for $25.2 million net proceeds ( $25.5 million gross proceeds, or $34.00 per common unit, less $0.3 million of transaction fees). In connection with the issuance of the common units, we issued 15,307 general partner units to the general partner for $0.5 million in order to maintain its 2.0% general partner interest in us. We used the net proceeds from these sales of common units and from our general partner’s proportionate capital contribution to repay borrowings outstanding under our Five-Year Revolver and our 364-Day Revolver and for general partnership purposes. Public Offering On March 29, 2016, we completed the sale of 12,650,000 common units in a registered public offering for $395.2 million net proceeds ( $401.6 million gross proceeds, or $31.75 per common unit, less $6.3 million of underwriter's fees and $0.1 million of transaction fees). In connection with the issuance of the common units, we issued 258,163 general partner units to the general partner for $8.2 million in order to maintain its 2.0% general partner interest in us. We used the net proceeds from the offering and from our general partner’s proportionate capital contribution to repay borrowings outstanding under our Five-Year Revolver and our 364-Day Revolver and for general partnership purposes. Units Outstanding As of March 31, 2016 , we had 97,767,376 common units, of which 76,292,308 were publicly owned. SPLC owned 21,475,068 common units and 67,475,068 subordinated units, representing an aggregate 52.8% limited partner interest in us, all of the incentive distribution rights, and 3,372,295 general partner units, representing a 2.0% general partner interest in us. The changes in the number of units outstanding from December 31, 2015 through March 31, 2016 are as follows: Public SPLC SPLC General (in units) Common Common Subordinated Partner Total Balance as of December 31, 2015 62,892,308 21,475,068 67,475,068 3,098,825 154,941,269 Units issued in connection with ATM Offering 750,000 — — 15,307 765,307 Units issued in connection with public offering 12,650,000 — — 258,163 12,908,163 Balance as of March 31, 2016 76,292,308 21,475,068 67,475,068 3,372,295 168,614,739 Distributions to our Unitholders The following table details the distributions declared and/or paid for the periods presented: Date Paid or Public SPLC SPLC General Partner Distributions to be Paid Three Months Ended Common Common Subordinated Incentive 2% Total (in millions, except per unit amounts) February 12, 2015 December 31, 2014 (1) $ 4.8 $ 2.2 $ 7.1 $ — $ 0.3 $ 14.4 $ 0.1042 May 14, 2015 March 31, 2015 8.0 3.8 11.8 — 0.5 24.1 0.1750 August 13, 2015 June 30, 2015 10.2 4.1 12.8 0.1 0.5 27.7 0.1900 November 12, 2015 September 30, 2015 11.0 4.4 13.9 0.4 0.6 30.3 0.2050 February 11, 2016 December 31, 2015 13.8 4.7 14.9 1.2 0.7 35.3 0.2200 May 12, 2016 (2) March 31, 2016 17.9 5.1 15.8 2.0 0.9 41.7 0.2350 (1) The fourth quarter 2014 minimum quarterly distribution was prorated for the 59-day period from November 3, 2014 to December 31, 2015 in accordance with the Partnership Agreement. (2) For more information see Note 12 — Subsequent Events . Distributions to Noncontrolling Interest Distributions to noncontrolling interest, which represents SPLC's noncontrolling interest in Zydeco, was $12.4 million and $25.1 million , respectively, for the three months ended March 31, 2016 and 2015.

Net Income Per Limited Partner

Net Income Per Limited Partner Unit	3 Months Ended
	Mar. 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 limited partner units and to subordinated limited partner units is computed by dividing the respective limited partners’ interest in net income attributable to the Partnership for the period 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 when calculating the net income per unit applicable to limited partners. The classes of participating securities include common units, subordinated units, general partner units and incentive distribution rights. Basic and diluted net income per unit are the same because we do not have any potentially dilutive units outstanding for the period presented. Our net income for 2015 includes earnings of our Parent related to acquired businesses for periods prior to their acquisition by us. Under the two class method these earnings must be allocated entirely to our general partner. We have allocated these earnings of our Parent to our general partner. On April 20, 2016 , the Board of Directors of our general partner declared a quarterly cash distribution of $0.2350 per unit, or $41.7 million in total, for the three months ended March 31, 2016. The distribution will be paid on May 12, 2016 to unitholders of record as of May 2, 2016 . The following tables show the allocation of net income attributable to the Partnership to arrive at net income per limited partner unit: Three Months Ended Three Months Ended Net income $ 68.0 $ 49.1 Less: Net income attributable to Parent — 7.7 Net income attributable to noncontrolling interests 12.7 17.8 Net income attributable to the Partnership 55.3 23.6 Less: General Partner's distribution declared 2.9 0.5 Limited Partners' distribution declared on common units 23.0 11.8 Limited Partners' distribution declared on subordinated units 15.8 11.8 Income in excess of distributions (distributions in excess of income) $ 13.6 $ (0.5 ) Three Months Ended March 31, 2016 General Limited Partners' Limited Partners' Partner Common Units Subordinated Units Total (in millions of dollars, except per unit data) Distributions declared $ 2.9 $ 23.0 $ 15.8 $ 41.7 Income in excess of distributions 0.2 7.5 5.9 13.6 Net income attributable to the Partnership $ 3.1 $ 30.5 $ 21.7 $ 55.3 Weighted average units outstanding (in millions): Basic and diluted 84.9 67.5 Net income per Limited Partner Unit (in dollars): Basic and diluted $ 0.36 $ 0.32 Three Months Ended March 31, 2015 General Limited Partners' Limited Partners' Partner Common Units Subordinated Units Total (in millions of dollars, except per unit data) Distributions declared $ 0.5 $ 11.8 $ 11.8 $ 24.1 Distributions in excess of income — (0.2 ) (0.3 ) (0.5 ) Net income attributable to the Partnership $ 0.5 $ 11.6 $ 11.5 $ 23.6 Weighted average units outstanding (in millions): Basic and diluted 67.5 67.5 Net income per Limited Partner Unit (in dollars): Basic and diluted $ 0.17 $ 0.17

Income Taxes

Income Taxes	3 Months Ended
	Mar. 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 are generally borne by our partners through the allocation of taxable income. Our income tax expense results from partnership activity in the state of Texas, as conducted by Zydeco. Income tax expense for the three months ended March 31, 2016 was immaterial and for the three months ended March 31, 2015 was $0.2 million .

Commitments and Contingencies

Commitments and Contingencies	3 Months Ended
	Mar. 31, 2016
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies Environmental Matters We are subject to federal, state, and local environmental laws and regulations. We routinely conduct reviews of potential environmental issues and claims that could impact our assets or operations. These reviews assist us in identifying environmental issues and estimating the costs and timing of remediation efforts. In making environmental liability estimations, we consider the material effect of environmental compliance, pending legal actions against us and potential third-party liability claims. Often, as the remediation evaluation and effort progresses, additional information is obtained, requiring revisions to estimated costs. These revisions are reflected in our income in the period in which they are probable and reasonably estimable. As of March 31, 2016 and December 31, 2015 , there were no accruals for environmental clean-up costs. Legal Proceedings SPLC and certain affiliates are named defendants in lawsuits and governmental proceedings that arise in the ordinary course of business. For each of our outstanding legal matters, we evaluate the merits of the case, our exposure to the matter, possible legal or settlement strategies and the likelihood of an unfavorable outcome. While there are still uncertainties related to the ultimate costs we may incur, based upon our evaluation and experience to date, we do not expect that the ultimate resolution of these matters will have a material adverse effect on our financial position, operating results, or cash flows. Effective July 31, 2014, a rate case was filed against Zydeco with the FERC. The rate case was resolved by a settlement approved by FERC which established maximum uncommitted (or non-contract) rates for uncommitted shippers effective December 1, 2015. The settlement also provided for rate refunds for shippers of the difference between the higher pre-settlement uncommitted (or non-contract) rates and the lower settlement rates for the period from July 31, 2014 to November 30, 2015 (plus interest). We recognized $2.3 million in 2015 related to the settlement of this rate case. We were indemnified by SPLC under the Omnibus Agreement for some of the costs incurred. As of March 31, 2016 we had no outstanding payables or receivables related to this case as all shippers' settlements were paid in January 2016 and all indemnifications from SPLC have been received.

Subsequent Event

Subsequent Event	3 Months Ended
	Mar. 31, 2016
Subsequent Events [Abstract]
Subsequent Event	Subsequent Event We have evaluated events that have occurred after March 31, 2016 , through the issuance of these condensed consolidated financial statements. Any material subsequent events that occurred during this time have been properly recognized or disclosed in the consolidated financial statements and accompanying notes. Distribution On April 20, 2016 , the Board of Directors of our general partner declared a cash distribution of $0.2350 per limited partner unit for the three months ended March 31, 2016 . The distribution will be paid May 12, 2016 to unitholders of record as of May 2, 2016 .

Description of the Business a19

Description of the Business and Basis of Presentation (Policies)	3 Months Ended
	Mar. 31, 2016
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Description of the Business	Description of Business We are a fee-based, growth-oriented master limited partnership formed by Shell to own, operate, develop and acquire pipelines and other midstream assets. Our assets consist of interests in entities that own crude oil and refined products pipelines serving as key infrastructure to transport onshore and offshore crude oil production to Gulf Coast refining markets and to deliver refined products from those markets to major demand centers. As of March 31, 2016 , we own interests in four crude oil pipeline systems, two refined products systems and a crude storage terminal. The crude oil pipeline systems, which are held by Zydeco Pipeline Company LLC (“Zydeco”), Mars Oil Pipeline Company (“Mars”), Poseidon Oil Pipeline Company, LLC (“Poseidon”) and the Auger Pipeline System (“Auger”), are strategically located along the Texas and Louisiana Gulf Coast and in the Gulf of Mexico. These systems link major onshore and offshore production areas with key refining markets. The refined products pipeline systems, which are held by Bengal Pipeline Company LLC (“Bengal”) and Colonial Pipeline Company (“Colonial”), connect Gulf Coast and southeastern U.S. refineries to major demand centers from Alabama to New York. The crude storage terminal, called the Lockport Terminal (“Lockport”), is located southwest of Chicago and serves Midwest refineries. Auger and Lockport are owned by our wholly owned subsidiary, Pecten Midstream LLC (“Pecten”). As of March 31, 2016 , we own a 100% interest in Pecten, a 62.5% interest in Zydeco, a 28.6% interest in Mars, a 36.0% interest in Poseidon, a 49.0% interest in Bengal and a 3.0% interest in Colonial. Each of Pecten and Zydeco is consolidated within our condensed consolidated financial statements as a subsidiary. The 37.5% ownership interest in Zydeco retained by SPLC is reflected as noncontrolling interest in our condensed consolidated financial statements. We account for each of our investments in Mars, Bengal and Poseidon using the equity method of accounting, and we account for our investment in Colonial using the cost method of accounting. We generate the majority of our revenue under long-term agreements by charging fees for the transportation and storage of crude oil and refined products through our pipelines and storage tanks. Our operations consist of one reportable segment.
Basis of Presentation	Basis of Presentation Our condensed consolidated financial statements include all majority owned and non-majority owned subsidiaries required to be consolidated under generally accepted accounting principles in the United States (“GAAP”). Our reporting currency is U.S. dollars, and all references to dollars are U.S. dollars. The accompanying unaudited condensed consolidated financial statements and related notes have been prepared in accordance with GAAP for interim financial information and with the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and notes required by GAAP for complete annual financial statements. The year-end condensed consolidated balance sheet data was derived from audited financial statements, but does not include all disclosures required by GAAP. During interim periods, we follow the accounting policies disclosed in our Annual Report on Form 10-K for the year ended December 31, 2015 (our “2015 Annual Report”), filed with the United States Securities and Exchange Commission (“SEC”). The unaudited condensed consolidated financial statements for the three months ended March 31, 2016 and 2015 include all adjustments we believe are necessary for a fair statement of the results for the interim periods. These adjustments are of a normal recurring nature unless otherwise disclosed. Operating results for the three months ended March 31, 2016 are not necessarily indicative of the results that may be expected for the full year ended December 31, 2016 . These unaudited condensed consolidated financial statements and other information included in this Quarterly Report should be read in conjunction with our consolidated financial statements and notes thereto included in our 2015 Annual Report. The March 31, 2015 condensed consolidated financial statements have been retrospectively adjusted for the acquisition of the Shell Auger and Lockport Operations. These retrospective adjustments include expense allocations for certain functions historically performed by our Parent on behalf of the Shell Auger and Lockport Operations, including allocations of general corporate expenses related to finance, legal, information technology, human resources, communications, ethics and compliance, shared services, employee benefits and incentives, insurance, and share-based compensation. Prior to the contribution of fixed assets and certain agreements on October 1, 2015 related to the Shell Auger and Lockport Operations, the cash generated and used by these operations was deposited to SPLC’s centralized account which was comingled with the cash of other pipeline entities controlled by SPLC. SPLC funded these operating and investing activities as needed. Accordingly, we did not record any cash and cash equivalents held by SPLC on behalf of the Shell Auger and Lockport Operations for any period prior to October 1, 2015. We reflected the cash generated by these operations and expenses paid by SPLC on behalf of these operations as Net distributions to Parent within the accompanying condensed consolidated statements of cash flows.
Summary of Significant Accounting Policies	Summary of Significant Accounting Policies The accounting policies are set forth in Note 2 of the Notes to Consolidated Financial Statements in our 2015 Annual Report. There have been no significant changes to these policies during the three months ended March 31, 2016 .
Recent Accounting Pronouncements	Recent Accounting Pronouncements For additional information on accounting pronouncements issued prior to March 2016, refer to Note 2 of the Notes to Consolidated Financial Statements in our 2015 Annual Report. In February 2015, the FASB issued an accounting standards update (ASU 2015-02) making targeted changes to the current consolidation guidance. The new standard changes the considerations related to substantive rights, related parties, and decision making fees when applying the variable interest entity consolidation model and eliminates certain guidance for limited partnerships and similar entities under the voting interest consolidation model. The update is effective for fiscal years and interim periods within those fiscal years beginning after December 15, 2015. Adoption of this standard did not have a material impact on the consolidated results of operations, financial position or cash flows. In March 2016, the FASB issued accounting standards update (ASU 2016-07) to topic 323, Investments – Equity Method and Joint Ventures, to eliminate the need for an entity to retroactively adopt the equity method of accounting when an investment becomes qualified for the use of the equity method of accounting due to an increase in level of ownership or degree of influence. This provision is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2016. We are currently evaluating the effect of adoption of this guidance on our financial position or results of operations.

Retrospective Adjustment (Table

Retrospective Adjustment (Tables)	3 Months Ended
	Mar. 31, 2016
Business Combinations [Abstract]
Schedule of Results of Operations and Cash Flows	The following tables present our condensed consolidated statement of income and condensed consolidated statement of cash flows for the three months ended March 31, 2015 giving effect to the acquisition of Pecten. The results of Pecten prior to the effective date of the acquisition are included in the “Shell Auger and Lockport Operations” and the consolidated results are included in “Consolidated Results” within the tables below : Condensed Consolidated Statement of Income Three Months Ended March 31, 2015 Shell Auger Shell Midstream and Lockport Consolidated Partners, L.P. (1) Operations (2) Results Revenue Third parties $ 41.3 $ 5.2 $ 46.5 Related parties 10.4 9.0 19.4 Total revenue 51.7 14.2 65.9 Costs and expenses Operations and maintenance – third parties 6.9 2.5 9.4 Operations and maintenance – related parties 3.9 1.3 5.2 General and administrative – third parties 1.6 0.1 1.7 General and administrative – related parties 5.0 0.6 5.6 Depreciation, amortization and accretion 3.4 1.8 5.2 Property and other taxes 3.2 0.2 3.4 Total costs and expenses 24.0 6.5 30.5 Operating income 27.7 7.7 35.4 Income from equity investments 12.5 — 12.5 Dividend income from investment 1.6 — 1.6 Investment and dividend income 14.1 — 14.1 Interest expense, net 0.2 — 0.2 Income before income taxes 41.6 7.7 49.3 Income tax expense 0.2 — 0.2 Net income 41.4 7.7 49.1 Less: Net income attributable to Parent — 7.7 7.7 Less: Net income attributable to noncontrolling interests 17.8 — 17.8 Net income attributable to the Partnership $ 23.6 $ — $ 23.6 (1) As previously reported in our Quarterly Report on Form 10-Q for the three months ended March 31, 2015. (2) Results of the Shell Auger and Lockport Operations from January 1, 2015 through March 31, 2015. Condensed Consolidated Statement of Cash Flows Three Months Ended March 31, 2015 Shell Auger Shell Midstream and Lockport Consolidated Partners, L.P. (1) Operations (2) Results Cash flows from operating activities Net income $ 41.4 $ 7.7 $ 49.1 Adjustments to reconcile net income to net cash provided by operating activities Depreciation, amortization and accretion 3.4 1.8 5.2 Changes in operating assets and liabilities Accounts receivable 6.1 5.1 11.2 Allowance oil 0.3 0.4 0.7 Prepaid expenses 1.1 0.3 1.4 Accounts payable (6.2 ) (0.4 ) (6.6 ) Deferred revenue 6.9 — 6.9 Accrued liabilities 4.4 0.3 4.7 Net cash provided by operating activities 57.4 15.2 72.6 Cash flows from investing activities Capital expenditures (2.5 ) (0.1 ) (2.6 ) Return of investment 3.2 — 3.2 Payment of pre-IPO distributions from investments to SPLC (11.9 ) — (11.9 ) Net cash used in investing activities (11.2 ) (0.1 ) (11.3 ) Cash flows from financing activities Distributions to noncontrolling interest (25.1 ) — (25.1 ) Distributions to unitholders and general partner (14.4 ) — (14.4 ) Net distributions to Parent — (15.1 ) (15.1 ) Net cash used in financing activities (39.5 ) (15.1 ) (54.6 ) Net increase in cash and cash equivalents 6.7 — 6.7 Cash and cash equivalents at beginning of the period 150.2 — 150.2 Cash and cash equivalents at end of the period $ 156.9 $ — $ 156.9 Supplemental Cash Flow Information Non-cash investing transactions Change in accrued capital expenditures $ (0.5 ) $ — $ (0.5 ) (1) As previously reported in our Quarterly Report on Form 10-Q for the three months ended March 31, 2015. (2) Results of the Shell Auger and Lockport Operations from January 1, 2015 through March 31, 2015.

Related Party Transactions (Tab

Related Party Transactions (Tables)	3 Months Ended
	Mar. 31, 2016
Related Party Transactions [Abstract]
Schedule of Other Related Party Balances	Other related party balances consist of the following: March 31, 2016 December 31, 2015 Accounts receivable $ 8.1 $ 9.8 Prepaid expenses 1.9 2.8 Accounts payable (1) 8.5 9.3 Deferred revenue 2.0 3.6 Accrued liabilities 2.8 3.6 Debt payable (2) 47.7 457.6 Lease liability 23.7 22.8 (1) Accounts payable reflects amounts owed to SPLC for reimbursement of third-party expenses incurred by SPLC for our benefit. (2) Debt payable ref
Schedule Of Related Party Expenses Including Personnel Costs	The following table shows related party expenses, including personnel costs described above, incurred by Shell and SPLC on our behalf that are reflected in the accompanying condensed consolidated statements of income for the indicated periods: Three months ended March 31, 2016 2015 Operations and maintenance - related parties $ 5.4 $ 5.2 General and administrative - related parties (1) 5.7 5.6 (1) For the three months ended March 31, 2016 and 2015, we incurred $1.9 million and $1.8 million , respectively, under the Zydeco Management Agreement, and $2.1 million for both periods under the Omnibus Agreement for the general and administrative fee.

Equity Method Investments (Tabl

Equity Method Investments (Tables)	3 Months Ended
	Mar. 31, 2016
Equity Method Investments and Joint Ventures [Abstract]
Schedule of Equity Investments in Affiliates	Equity investments in affiliates comprise the following as of the dates indicated: March 31, 2016 (1) December 31, 2015 (2) Mars $ 85.0 $ 84.0 Bengal 74.7 75.6 Poseidon 22.2 25.4 $ 181.9 $ 185.0 (1) As of March 31, 2016, the equity investment exceeded our equity in the net assets of Mars and Poseidon by $11.3 million and $10.5 million , respectively. As of March 31, 2016, our equity investment balance in Bengal includes a gain from contribution, represented by a credit balance of $6.1 million . (2) As of December 31, 2015, the equity investment exceeded our equity in the net assets of Mars and Poseidon by $11.1 million and $10.3 million , respectively. As of December 31, 2015, our equity investment balance in Bengal includes a gain from contribution, represented by a credit balance of $6.0 million .
Schedule of Equity Investments in Affiliates Balance Affected	Our equity investments in affiliates balance was affected by the following during the periods indicated: Three Months Ended March 31, 2016 Mars Bengal Poseidon Total Distributions received $ 9.9 $ 6.3 $ 10.1 $ 26.3 Income from equity investments (1) 10.9 5.4 6.9 23.2 Return of investment (2) — 0.9 3.2 4.1 Income in excess of distributions (3) (1.0 ) — — (1.0 ) Three Months Ended March 31, 2015 Mars Bengal Total Distributions received $ 8.6 $ 7.1 $ 15.7 Income from equity investments (1) 7.4 5.1 12.5 Return of investment (2) 1.2 2.0 3.2 (1) Differences in the basis of the investments and the separate net asset value of the investees, if any, are amortized into net income over the remaining useful lives of the underlying assets. For the three months ended March 31, 2016, amortization expense (income) for Mars, Bengal and Poseidon of $0.2 million , $(0.1) million and $0.2 million , respectively, is included in the condensed consolidated statement of income. For the three months ended March 31, 2015, amortization expense (income) for Mars and Bengal of $0.4 million and $(0.1) million , respectively, is included in the condensed consolidated statement of income. (2) Distributions received in excess of our income from equity investments is shown as a return of investment in our condensed consolidated statements of cash flows. (3) Income from equity investments in excess of distributions received is shown as income in excess of distributions in our condensed consolidated statements of cash flows.
Summary of Income Statement Data for Equity Method Investments	The following tables present aggregated selected unaudited income statement data for our equity method investments in Mars, Bengal and Poseidon, on a 100% basis: Three Months Ended March 31, 2016 Mars Bengal Poseidon Statements of Income Total revenues $ 57.3 $ 17.4 $ 27.4 Total operating expenses 18.5 6.4 6.6 Operating income $ 38.8 $ 11.0 $ 20.8 Net income (1) $ 38.8 $ 11.0 $ 19.7 Three Months Ended March 31, 2015 Mars Bengal Statements of Income Total revenues $ 44.9 $ 16.3 Total operating expenses 17.6 6.1 Operating income $ 27.3 $ 10.2 Net income (1) $ 27.4 $ 10.2 (1) Difference between Operating income and Net income represents interest expense or interest income.

Property, Plant and Equipment (

Property, Plant and Equipment (Tables)	3 Months Ended
	Mar. 31, 2016
Property, Plant and Equipment [Abstract]
Components of Property, Plant and Equipment	Property, plant and equipment consist of the following as of the dates indicated: Depreciable Life March 31, 2016 December 31, 2015 Land — $ 1.4 $ 1.4 Building and improvements 10 - 40 years 19.6 19.5 Pipeline and equipment (1) 10 - 30 years 572.1 572.4 Other 5 - 25 years 6.0 5.6 599.1 598.9 Accumulated depreciation and amortization (2) (222.1 ) (216.2 ) 377.0 382.7 Construction in progress 15.1 10.2 Property, plant and equipment, net $ 392.1 $ 392.9 (1) As of March 31, 2016 and December 31, 2015, includes cost of $22.8 million related to assets under capital lease. (2) As of March 31, 2016 and December 31, 2015, includes accumulated depreciation of $0.5 million and $0.1 million related to assets under capital lease, respectively.

Accrued Liabilities - Third P24

Accrued Liabilities - Third Parties (Tables)	3 Months Ended
	Mar. 31, 2016
Payables and Accruals [Abstract]
Schedule of Accrued Liabilities	Accrued liabilities - third parties consist of the following as of the dates indicated: March 31, 2016 December 31, 2015 Transportation, project engineering $ 2.4 $ 3.0 Property taxes 2.8 0.3 FERC accrual — 1.7 Professional fees 0.3 1.2 Other accrued liabilities 0.8 0.6 Accrued liabilities - third parties $ 6.3 $ 6.8

Related Party Debt (Tables)

Related Party Debt (Tables)	3 Months Ended
	Mar. 31, 2016
Debt Disclosure [Abstract]
Schedule of Consolidated Related Party Debt Obligations	Consolidated related party debt obligations comprise the following as of the dates indicated: March 31, 2016 December 31, 2015 Five-Year Revolver, variable rate, due October 31, 2019 (1) $ 48.2 $ 320.8 364-Day Revolver, variable rate, due March 1, 2017 (2) — 137.4 Zydeco Revolver, variable rate, due August 6, 2019 (3) — — Unamortized debt issuance costs (0.5 ) (0.6 ) Debt payable - related party $ 47.7 $ 457.6 (1) As of March 31, 2016 , availability under the $400.0 million Five -Year Revolver was $351.8 million . (2) As of March 31, 2016 , the entire $180.0 million capacity was available under the 364 -Day Revolver. (3) As of March 31, 2016 , the entire $30.0 million capacity was available under the Zydeco Revolver.

Equity (Tables)

Equity (Tables)	3 Months Ended
	Mar. 31, 2016
Equity [Abstract]
Schedule of Number of Units Outstanding	The changes in the number of units outstanding from December 31, 2015 through March 31, 2016 are as follows: Public SPLC SPLC General (in units) Common Common Subordinated Partner Total Balance as of December 31, 2015 62,892,308 21,475,068 67,475,068 3,098,825 154,941,269 Units issued in connection with ATM Offering 750,000 — — 15,307 765,307 Units issued in connection with public offering 12,650,000 — — 258,163 12,908,163 Balance as of March 31, 2016 76,292,308 21,475,068 67,475,068 3,372,295 168,614,739
Schedule of Distributions Declared and/or Paid	The following table details the distributions declared and/or paid for the periods presented: Date Paid or Public SPLC SPLC General Partner Distributions to be Paid Three Months Ended Common Common Subordinated Incentive 2% Total (in millions, except per unit amounts) February 12, 2015 December 31, 2014 (1) $ 4.8 $ 2.2 $ 7.1 $ — $ 0.3 $ 14.4 $ 0.1042 May 14, 2015 March 31, 2015 8.0 3.8 11.8 — 0.5 24.1 0.1750 August 13, 2015 June 30, 2015 10.2 4.1 12.8 0.1 0.5 27.7 0.1900 November 12, 2015 September 30, 2015 11.0 4.4 13.9 0.4 0.6 30.3 0.2050 February 11, 2016 December 31, 2015 13.8 4.7 14.9 1.2 0.7 35.3 0.2200 May 12, 2016 (2) March 31, 2016 17.9 5.1 15.8 2.0 0.9 41.7 0.2350 (1) The fourth quarter 2014 minimum quarterly distribution was prorated for the 59-day period from November 3, 2014 to December 31, 2015 in accordance with the Partnership Agreement. (2) For more information see Note 12 — Subsequent Events .

Net Income Per Limited Partne27

Net Income Per Limited Partner Unit (Tables)	3 Months Ended
	Mar. 31, 2016
Partners' Capital Notes [Abstract]
Schedule of Allocation of Net Income to Arrive at Net Income Per Limited Partner Unit	The following tables show the allocation of net income attributable to the Partnership to arrive at net income per limited partner unit: Three Months Ended Three Months Ended Net income $ 68.0 $ 49.1 Less: Net income attributable to Parent — 7.7 Net income attributable to noncontrolling interests 12.7 17.8 Net income attributable to the Partnership 55.3 23.6 Less: General Partner's distribution declared 2.9 0.5 Limited Partners' distribution declared on common units 23.0 11.8 Limited Partners' distribution declared on subordinated units 15.8 11.8 Income in excess of distributions (distributions in excess of income) $ 13.6 $ (0.5 )
Schedule of Basic and Diluted Net Income Per Unit	Three Months Ended March 31, 2016 General Limited Partners' Limited Partners' Partner Common Units Subordinated Units Total (in millions of dollars, except per unit data) Distributions declared $ 2.9 $ 23.0 $ 15.8 $ 41.7 Income in excess of distributions 0.2 7.5 5.9 13.6 Net income attributable to the Partnership $ 3.1 $ 30.5 $ 21.7 $ 55.3 Weighted average units outstanding (in millions): Basic and diluted 84.9 67.5 Net income per Limited Partner Unit (in dollars): Basic and diluted $ 0.36 $ 0.32 Three Months Ended March 31, 2015 General Limited Partners' Limited Partners' Partner Common Units Subordinated Units Total (in millions of dollars, except per unit data) Distributions declared $ 0.5 $ 11.8 $ 11.8 $ 24.1 Distributions in excess of income — (0.2 ) (0.3 ) (0.5 ) Net income attributable to the Partnership $ 0.5 $ 11.6 $ 11.5 $ 23.6 Weighted average units outstanding (in millions): Basic and diluted 67.5 67.5 Net income per Limited Partner Unit (in dollars): Basic and diluted $ 0.17 $ 0.17

Description of the Business a28

Description of the Business and Basis of Presentation - Additional Information (Details)	3 Months Ended
	Mar. 31, 2016segmentsystem	Dec. 31, 2015	Mar. 31, 2015
Description Of Business And Basis Of Presentation [Line Items]
Number of pipeline systems	4
Number of refined products systems	2
Number of reportable segments | segment	1
Zydeco
Description Of Business And Basis Of Presentation [Line Items]
Minority interest ownership percentage by parent	62.50%
Minority interest ownership percentage by noncontrolling owners	37.50%	37.50%	57.00%
Colonial
Description Of Business And Basis Of Presentation [Line Items]
Cost method investment percentage	3.00%
Mars
Description Of Business And Basis Of Presentation [Line Items]
Equity method investment percentage	28.60%	28.60%
Poseidon
Description Of Business And Basis Of Presentation [Line Items]
Equity method investment percentage	36.00%	36.00%
Bengal
Description Of Business And Basis Of Presentation [Line Items]
Equity method investment percentage	49.00%	49.00%

Retrospective Adjustment - Sta

Retrospective Adjustment - Statement of Income (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Revenue
Third parties	$ 51.3	$ 46.5	[1]
Related parties	25.4	19.4	[1]
Total revenue	76.7	65.9	[1]
Costs and expenses
Operations and maintenance – third parties	9.4	9.4	[1]
Operations and maintenance – related parties	5.4	5.2	[1]
General and administrative – third parties	2.1	1.7	[1]
General and administrative – related parties	5.7	5.6	[1]
Depreciation, amortization and accretion	5.9	5.2	[1],[2]
Property and other taxes	3.2	3.4	[1]
Total costs and expenses	31.7	30.5	[1]
Operating income	45	35.4	[1]
Income from equity investments	23.2	12.5	[1]
Dividend income from investment	2.8	1.6	[1]
Investment and dividend income	26	14.1	[1]
Interest expense, net	3	0.2	[1]
Income before income taxes	68	49.3	[1]
Income tax expense	0	0.2	[1]
Net income	68	49.1	[1],[2]
Less: Net income attributable to Parent	0	7.7	[1]
Net income attributable to the Partnership	$ 55.3	23.6	[1]
Pecten
Revenue
Third parties		46.5
Related parties		19.4
Total revenue		65.9
Costs and expenses
Operations and maintenance – third parties		9.4
Operations and maintenance – related parties		5.2
General and administrative – third parties		1.7
General and administrative – related parties		5.6
Depreciation, amortization and accretion		5.2
Property and other taxes		3.4
Total costs and expenses		30.5
Operating income		35.4
Income from equity investments		12.5
Dividend income from investment		1.6
Investment and dividend income		14.1
Interest expense, net		0.2
Income before income taxes		49.3
Income tax expense		0.2
Net income		49.1
Less: Net income attributable to Parent		7.7
Less: Net income attributable to noncontrolling interests		17.8
Net income attributable to the Partnership		23.6
Shell Midstream Partners, L.P. | Pecten
Revenue
Third parties		41.3
Related parties		10.4
Total revenue		51.7
Costs and expenses
Operations and maintenance – third parties		6.9
Operations and maintenance – related parties		3.9
General and administrative – third parties		1.6
General and administrative – related parties		5
Depreciation, amortization and accretion		3.4
Property and other taxes		3.2
Total costs and expenses		24
Operating income		27.7
Income from equity investments		12.5
Dividend income from investment		1.6
Investment and dividend income		14.1
Interest expense, net		0.2
Income before income taxes		41.6
Income tax expense		0.2
Net income		41.4
Less: Net income attributable to Parent		0
Less: Net income attributable to noncontrolling interests		17.8
Net income attributable to the Partnership		23.6
Shell Auger and Lockport Operations | Pecten
Revenue
Third parties		5.2
Related parties		9
Total revenue		14.2
Costs and expenses
Operations and maintenance – third parties		2.5
Operations and maintenance – related parties		1.3
General and administrative – third parties		0.1
General and administrative – related parties		0.6
Depreciation, amortization and accretion		1.8
Property and other taxes		0.2
Total costs and expenses		6.5
Operating income		7.7
Income from equity investments		0
Dividend income from investment		0
Investment and dividend income		0
Interest expense, net		0
Income before income taxes		7.7
Income tax expense		0
Net income		7.7
Less: Net income attributable to Parent		7.7
Less: Net income attributable to noncontrolling interests		0
Net income attributable to the Partnership		$ 0
[1]	(1) The 2015 financial information has been retrospectively adjusted for the acquisition of the Shell Auger and Lockport Operations.
[2]	(1) The 2015 financial information has been retrospectively adjusted for the acquisition of the Shell Auger and Lockport Operations.

Retrospective Adjustment - S30

Retrospective Adjustment - Statement of Cash Flows (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Cash flows from operating activities
Net income	$ 68	$ 49.1	[1],[2]
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation, amortization and accretion	5.9	5.2	[1],[2]
Changes in operating assets and liabilities
Accounts receivable	0.3	11.2	[1]
Allowance oil	(0.4)	0.7	[1]
Prepaid expenses	1.6	1.4	[1]
Accounts payable	(0.2)	(6.6)	[1]
Deferred revenue	(1.8)	6.9	[1]
Accrued liabilities	(0.1)	4.7	[1]
Net cash provided by operating activities	72.4	72.6	[1]
Cash flows from investing activities
Capital expenditures	(4.7)	(2.6)	[1]
Return of investment	4.1	3.2	[1]
Payment of pre-IPO distributions from investments to SPLC	0	(11.9)	[1]
Net cash used in investing activities	(0.6)	(11.3)	[1]
Cash flows from financing activities
Distributions to noncontrolling interest	(12.4)	(25.1)	[1]
Distributions to unitholders and general partner	(35.3)	(14.4)	[1]
Net distribution to Parent	0	(15.1)	[1]
Net cash used in financing activities	(26.8)	(54.6)	[1]
Net increase in cash and cash equivalents	45	6.7	[1]
Cash and cash equivalents at beginning of the period	93	150.2	[1]
Cash and cash equivalents at end of the period	138	156.9	[1]
Change in accrued capital expenditures	$ 0.4	(0.5)	[1]
Pecten
Cash flows from operating activities
Net income		49.1
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation, amortization and accretion		5.2
Changes in operating assets and liabilities
Accounts receivable		11.2
Allowance oil		0.7
Prepaid expenses		1.4
Accounts payable		(6.6)
Deferred revenue		6.9
Accrued liabilities		4.7
Net cash provided by operating activities		72.6
Cash flows from investing activities
Capital expenditures		(2.6)
Return of investment		3.2
Payment of pre-IPO distributions from investments to SPLC		(11.9)
Net cash used in investing activities		(11.3)
Cash flows from financing activities
Distributions to noncontrolling interest		(25.1)
Distributions to unitholders and general partner		(14.4)
Net distribution to Parent		(15.1)
Net cash used in financing activities		(54.6)
Net increase in cash and cash equivalents		6.7
Cash and cash equivalents at beginning of the period		150.2
Cash and cash equivalents at end of the period		156.9
Change in accrued capital expenditures		(0.5)
Shell Midstream Partners, L.P. | Pecten
Cash flows from operating activities
Net income		41.4
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation, amortization and accretion		3.4
Changes in operating assets and liabilities
Accounts receivable		6.1
Allowance oil		0.3
Prepaid expenses		1.1
Accounts payable		(6.2)
Deferred revenue		6.9
Accrued liabilities		4.4
Net cash provided by operating activities		57.4
Cash flows from investing activities
Capital expenditures		(2.5)
Return of investment		3.2
Payment of pre-IPO distributions from investments to SPLC		(11.9)
Net cash used in investing activities		(11.2)
Cash flows from financing activities
Distributions to noncontrolling interest		(25.1)
Distributions to unitholders and general partner		(14.4)
Net distribution to Parent		0
Net cash used in financing activities		(39.5)
Net increase in cash and cash equivalents		6.7
Cash and cash equivalents at beginning of the period		150.2
Cash and cash equivalents at end of the period		156.9
Change in accrued capital expenditures		(0.5)
Shell Auger and Lockport Operations | Pecten
Cash flows from operating activities
Net income		7.7
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation, amortization and accretion		1.8
Changes in operating assets and liabilities
Accounts receivable		5.1
Allowance oil		0.4
Prepaid expenses		0.3
Accounts payable		(0.4)
Deferred revenue		0
Accrued liabilities		0.3
Net cash provided by operating activities		15.2
Cash flows from investing activities
Capital expenditures		(0.1)
Return of investment		0
Payment of pre-IPO distributions from investments to SPLC		0
Net cash used in investing activities		(0.1)
Cash flows from financing activities
Distributions to noncontrolling interest		0
Distributions to unitholders and general partner		0
Net distribution to Parent		(15.1)
Net cash used in financing activities		(15.1)
Net increase in cash and cash equivalents		0
Cash and cash equivalents at beginning of the period		0
Cash and cash equivalents at end of the period		0
Change in accrued capital expenditures		$ 0
[1]	(1) The 2015 financial information has been retrospectively adjusted for the acquisition of the Shell Auger and Lockport Operations.
[2]	(1) The 2015 financial information has been retrospectively adjusted for the acquisition of the Shell Auger and Lockport Operations.

Related Party Transactions - Ad

Related Party Transactions - Additional Information (Details)	3 Months Ended
	Mar. 31, 2016USD ($)credit_facility	Mar. 31, 2015USD ($)		Dec. 31, 2015
Related Party Transaction [Line Items]
Indemnification liability deductble amount	$ 500,000
Aggregate liability of SPLC	15,000,000
Revenue from related parties	$ 25,400,000	$ 19,400,000	[1]
Zydeco
Related Party Transaction [Line Items]
Minority interest ownership percentage by noncontrolling owners	37.50%	57.00%		37.50%
Total distributions to general partners	$ 20,600,000
Transportation Services
Related Party Transaction [Line Items]
Revenue from related parties	23,300,000	$ 17,600,000
Storage Services
Related Party Transaction [Line Items]
Revenue from related parties	$ 2,100,000	1,800,000
Shell Treasury Center West Inc
Related Party Transaction [Line Items]
Number of revolving credit facilities | credit_facility	2
Zydeco, Mars, Bengal, Poseidon and Colonial
Related Party Transaction [Line Items]
Total distributions to general partners	$ 49,700,000
SPLC
Related Party Transaction [Line Items]
General and administrative - related parties	1,300,000	1,200,000
General insurance expense	$ 900,000	$ 800,000
Five Year Revolver | Shell Treasury Center West Inc
Related Party Transaction [Line Items]
Debt instrument term	5 years
364 Day Revolver | Shell Treasury Center West Inc
Related Party Transaction [Line Items]
Debt instrument term	364 days
[1]	(1) The 2015 financial information has been retrospectively adjusted for the acquisition of the Shell Auger and Lockport Operations.

Related Party Transactions - Sc

Related Party Transactions - Schedule of Other Related Party Balances (Details) - USD ($) $ in Millions	Mar. 31, 2016	Dec. 31, 2015
Related Party Transaction [Line Items]
Accounts receivable	$ 8.1	$ 9.8
Prepaid expenses	1.9	2.8
Accounts payable	8.5	9.3
Deferred revenue	2	3.6
Accrued liabilities	2.8	3.6
Debt payable – related party	47.7	457.6
Lease liability – related party	23.7	22.8
Unamortized debt issuance costs	0.5	0.6
Affiliated Entity
Related Party Transaction [Line Items]
Unamortized debt issuance costs	$ 0.5	$ 0.6

Related Party Transactions - 33

Related Party Transactions - Schedule of Condensed Combined Statement of Operations (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Related Party Transaction [Line Items]
Operations and maintenance – related parties	$ 5.4	$ 5.2	[1]
General and administrative – related parties	5.7	5.6	[1]
Management Agreement
Related Party Transaction [Line Items]
Payment for general administrative services	1.9	1.8
Omnibus Agreement
Related Party Transaction [Line Items]
Payment for general administrative services	$ 2.1	$ 2.1
[1]	(1) The 2015 financial information has been retrospectively adjusted for the acquisition of the Shell Auger and Lockport Operations.

Equity Method Investments - Add

Equity Method Investments - Additional Information (Details)	Mar. 31, 2016	Dec. 31, 2015
Mars
Schedule of Equity Method Investments [Line Items]
Equity method investment percentage	28.60%	28.60%
Bengal
Schedule of Equity Method Investments [Line Items]
Equity method investment percentage	49.00%	49.00%
Poseidon
Schedule of Equity Method Investments [Line Items]
Equity method investment percentage	36.00%	36.00%

Equity Method Investments - Sch

Equity Method Investments - Schedule of Equity Investments in Affiliates (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2016	Dec. 31, 2015
Schedule of Equity Method Investments [Line Items]
Equity method investments	$ 181.9	$ 185
Mars
Schedule of Equity Method Investments [Line Items]
Equity method investments	85	84
Amount equity investment exceeds equity in net assets	11.3	11.1
Bengal
Schedule of Equity Method Investments [Line Items]
Equity method investments	74.7	75.6
Gain from contribution on equity investments	6.1	6
Poseidon
Schedule of Equity Method Investments [Line Items]
Equity method investments	22.2	25.4
Amount equity investment exceeds equity in net assets	$ 10.5	$ 10.3

Equity Method Investments - S36

Equity Method Investments - Schedule of Equity Investments in Affiliates Balance Affected (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Schedule of Equity Method Investments [Line Items]
Distributions received	$ 26.3	$ 15.7
Income from equity investments	23.2	12.5	[1]
Return of investment	4.1	3.2	[2]
Income in excess of distributions	(1)	0	[2]
Mars
Schedule of Equity Method Investments [Line Items]
Distributions received	9.9	8.6
Income from equity investments	10.9	7.4
Return of investment	0	1.2
Income in excess of distributions	(1)
Amortization	0.2	0.4
Bengal
Schedule of Equity Method Investments [Line Items]
Distributions received	6.3	7.1
Income from equity investments	5.4	5.1
Return of investment	0.9	2
Income in excess of distributions	0
Amortization	(0.1)	$ (0.1)
Poseidon
Schedule of Equity Method Investments [Line Items]
Distributions received	10.1
Income from equity investments	6.9
Return of investment	3.2
Income in excess of distributions	0
Amortization	$ 0.2
[1]	(1) The 2015 financial information has been retrospectively adjusted for the acquisition of the Shell Auger and Lockport Operations.
[2]	(1) The 2015 financial information has been retrospectively adjusted for the acquisition of the Shell Auger and Lockport Operations.

Equity Method Investments - Sum

Equity Method Investments - Summary of Income Statement Data for Equity Method Investments (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Mars
Schedule of Equity Method Investments [Line Items]
Total revenues	$ 57.3	$ 44.9
Total operating expenses	18.5	17.6
Operating income	38.8	27.3
Net income	38.8	27.4
Bengal
Schedule of Equity Method Investments [Line Items]
Total revenues	17.4	16.3
Total operating expenses	6.4	6.1
Operating income	11	10.2
Net income	11	$ 10.2
Poseidon
Schedule of Equity Method Investments [Line Items]
Total revenues	27.4
Total operating expenses	6.6
Operating income	20.8
Net income	$ 19.7

Property, Plant and Equipment -

Property, Plant and Equipment - Components of Property,Plant and Equipment (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Dec. 31, 2015
Property Plant And Equipment [Line Items]
Land	$ 1.4	$ 1.4
Building and improvements	19.6	19.5
Pipeline and equipment	572.1	572.4
Other	6	5.6
Property, plant and equipment, gross	599.1	598.9
Accumulated depreciation	(222.1)	(216.2)
Property plant and equipment excluding construction in progress	377	382.7
Construction in progress	15.1	10.2
Property, plant and equipment, net	392.1	392.9
Costs related to assets under capital lease	22.8	22.8
Accumulated depreciation on assets under capital lease	$ 0.5	$ 0.1
Building and Improvements | Minimum
Property Plant And Equipment [Line Items]
Property, plant and equipment, depreciable life	10 years
Building and Improvements | Maximum
Property Plant And Equipment [Line Items]
Property, plant and equipment, depreciable life	40 years
Pipeline and Equipment | Minimum
Property Plant And Equipment [Line Items]
Property, plant and equipment, depreciable life	10 years
Pipeline and Equipment | Maximum
Property Plant And Equipment [Line Items]
Property, plant and equipment, depreciable life	30 years
Other | Minimum
Property Plant And Equipment [Line Items]
Property, plant and equipment, depreciable life	5 years
Other | Maximum
Property Plant And Equipment [Line Items]
Property, plant and equipment, depreciable life	25 years

Property, Plant and Equipment39

Property, Plant and Equipment - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Property, Plant and Equipment [Abstract]
Depreciation and amortization expense	$ 5.9	$ 5.2	[1],[2]
[1]	(1) The 2015 financial information has been retrospectively adjusted for the acquisition of the Shell Auger and Lockport Operations.
[2]	(1) The 2015 financial information has been retrospectively adjusted for the acquisition of the Shell Auger and Lockport Operations.

Accrued Liabilities - Third P40

Accrued Liabilities - Third Parties - Schedule of Accrued Liabilities (Details) - USD ($) $ in Millions	Mar. 31, 2016	Dec. 31, 2015
Payables and Accruals [Abstract]
Transportation, project engineering	$ 2.4	$ 3
Property taxes	2.8	0.3
FERC accrual	0	1.7
Professional fees	0.3	1.2
Other accrued liabilities	0.8	0.6
Accrued liabilities - third parties	$ 6.3	$ 6.8

Related Party Debt - Additional

Related Party Debt - Additional Information (Details) - USD ($)	Mar. 29, 2016	Mar. 31, 2016	Mar. 31, 2015	[1]
Line Of Credit Facility [Line Items]
Repayments of debt		$ 410,000,000	$ 0
364 Day Revolver | Poseidon
Line Of Credit Facility [Line Items]
Line of credit facility, expiration period		364 days
Shell Treasury Center West Inc | Five Year Revolver
Line Of Credit Facility [Line Items]
Debt instrument term		5 years
Line of credit facility maximum borrowing capacity		$ 400,000,000
Weighted average interest rate		1.90%
Repayments of debt	$ 272,600,000
Shell Treasury Center West Inc | 364 Day Revolver
Line Of Credit Facility [Line Items]
Debt instrument term		364 days
Line of credit facility maximum borrowing capacity		$ 180,000,000
Weighted average interest rate		1.70%
Repayments of debt	$ 137,400,000
Shell Treasury Center West Inc | Zydeco Revolver
Line Of Credit Facility [Line Items]
Line of credit facility maximum borrowing capacity		$ 30,000,000
[1]	(1) The 2015 financial information has been retrospectively adjusted for the acquisition of the Shell Auger and Lockport Operations.

Related Party Debt - Schedule o

Related Party Debt - Schedule of Consolidated Related Party Debt Obligations (Details) - USD ($)	3 Months Ended
	Mar. 31, 2016	Dec. 31, 2015
Line Of Credit Facility [Line Items]
Outstanding borrowing	$ 47,700,000	$ 457,600,000
Unamortized debt issuance costs	(500,000)	(600,000)
Five Year Revolver
Line Of Credit Facility [Line Items]
Outstanding borrowing	48,200,000	320,800,000
364 Day Revolver
Line Of Credit Facility [Line Items]
Outstanding borrowing	0	137,400,000
Zydeco | Revolver Due on August 2019
Line Of Credit Facility [Line Items]
Outstanding borrowing	0	$ 0
Shell Treasury Center West Inc | Zydeco | Revolver Due on August 2019
Line Of Credit Facility [Line Items]
Remaining borrowing capacity	30,000,000
Shell Treasury Center West Inc | Five Year Revolver
Line Of Credit Facility [Line Items]
Line of credit facility maximum borrowing capacity	$ 400,000,000
Debt instrument term	5 years
Remaining borrowing capacity	$ 351,800,000
Shell Treasury Center West Inc | 364 Day Revolver
Line Of Credit Facility [Line Items]
Line of credit facility maximum borrowing capacity	$ 180,000,000
Debt instrument term	364 days

Equity - Additional Information

Equity - Additional Information (Details) - USD ($)	Mar. 29, 2016	Mar. 02, 2016	Nov. 03, 2014	Mar. 31, 2016	Mar. 31, 2015	[1]	Dec. 31, 2015
Class Of Stock [Line Items]
Issuance of common units, maximum (in units)		$ 300,000,000
Units issued in connection with private placement (in units)				765,307
Net proceeds from public offerings				$ 420,400,000
Consideration for units issued in connection with private placement				$ 8,700,000	$ 0
Aggregate percentage of general partner interest			2.00%
Units issued in connection with public offering (in units)				12,908,163
Limited partners' capital account, units outstanding (in units)				97,767,376
Capital units, publicly owned (in units)				168,614,739			154,941,269
Ownership interest (in percentage)				52.80%
Distributions to noncontrolling interest				$ (12,400,000)	$ (25,100,000)
Shell Pipeline Company L P
Class Of Stock [Line Items]
Aggregate percentage of general partner interest				2.00%
General Partner
Class Of Stock [Line Items]
Units issued in connection with private placement (in units)				15,307
Consideration for units issued in connection with private placement	$ 8,200,000			$ 500,000
Aggregate percentage of general partner interest	2.00%			2.00%
Units issued in connection with public offering (in units)	258,163			258,163
Capital units, publicly owned (in units)				3,372,295			3,098,825
Common Units | General Public
Class Of Stock [Line Items]
Units issued in connection with private placement (in units)				750,000
Net proceeds from public offerings				$ 25,200,000
Gross proceed issuance of private placement offering				$ 25,500,000
Common units per share	$ 31.75			$ 34
Placement fees	$ 100,000			$ 300,000
Units issued in connection with public offering (in units)	12,650,000			12,650,000
Net proceeds from public offering	$ 395,200,000
Gross proceeds from public offering	401,600,000
Underwriter fees	$ 6,300,000
Limited partners' capital account, units outstanding (in units)				76,292,308			62,892,308
Capital units, publicly owned (in units)				76,292,308			62,892,308
Common Units | Shell Pipeline Company L P
Class Of Stock [Line Items]
Units issued in connection with private placement (in units)				0
Units issued in connection with public offering (in units)				0
Limited partners' capital account, units outstanding (in units)				21,475,068			21,475,068
Capital units, publicly owned (in units)				21,475,068			21,475,068
Subordinated Units | Shell Pipeline Company L P
Class Of Stock [Line Items]
Limited partners' capital account, units outstanding (in units)				67,475,068			67,475,068
[1]	(1) The 2015 financial information has been retrospectively adjusted for the acquisition of the Shell Auger and Lockport Operations.

Equity - Schedule of Number of

Equity - Schedule of Number of Units Outstanding (Details) - shares	Mar. 29, 2016	Mar. 31, 2016
Increase (Decrease) in Partners' Capital [Roll Forward]
Balance at December 31, 2015 (in units)		154,941,269
Units issued in connection with ATM Offering (in units)		765,307
Units issued in connection with public offering (in units)		12,908,163
Balance at March 31, 2016 (in units)		168,614,739
General Partner
Increase (Decrease) in Partners' Capital [Roll Forward]
Balance at December 31, 2015 (in units)		3,098,825
Units issued in connection with ATM Offering (in units)		15,307
Units issued in connection with public offering (in units)	258,163	258,163
Balance at March 31, 2016 (in units)		3,372,295
General Public | Common Units
Increase (Decrease) in Partners' Capital [Roll Forward]
Balance at December 31, 2015 (in units)		62,892,308
Units issued in connection with ATM Offering (in units)		750,000
Units issued in connection with public offering (in units)	12,650,000	12,650,000
Balance at March 31, 2016 (in units)		76,292,308
Shell Pipeline Company L P | Common Units
Increase (Decrease) in Partners' Capital [Roll Forward]
Balance at December 31, 2015 (in units)		21,475,068
Units issued in connection with ATM Offering (in units)		0
Units issued in connection with public offering (in units)		0
Balance at March 31, 2016 (in units)		21,475,068
Shell Pipeline Company L P | Subordinate Units
Increase (Decrease) in Partners' Capital [Roll Forward]
Balance at December 31, 2015 (in units)		67,475,068
Units issued in connection with ATM Offering (in units)		0
Units issued in connection with public offering (in units)		0
Balance at March 31, 2016 (in units)		67,475,068

Equity - Schedule of Distributi

Equity - Schedule of Distributions Declared and/or Paid (Details) - USD ($) $ / shares in Units, $ in Millions	Mar. 29, 2016	Nov. 03, 2014	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015		Dec. 31, 2014
Distribution Made To Limited Partner [Line Items]
Distributions declared and/or paid			$ 41.7	$ 35.3	$ 30.3	$ 27.7	$ 24.1		$ 14.4
Distributions paid per limited partner unit (in dollars per unit)			$ 0.2350	$ 0.2200	$ 0.2050	$ 0.1900	$ 0.1750	[1]	$ 0.1042
Aggregate percentage of general partner interest		2.00%
Shell Pipeline Company L P
Distribution Made To Limited Partner [Line Items]
Distributions declared and/or paid			$ 15.8	$ 14.9	$ 13.9	$ 12.8	$ 11.8		$ 7.1
Aggregate percentage of general partner interest			2.00%
Common Units | General Public
Distribution Made To Limited Partner [Line Items]
Distributions declared and/or paid			$ 17.9	13.8	11	10.2	8		4.8
Common Units | Shell Pipeline Company L P
Distribution Made To Limited Partner [Line Items]
Distributions declared and/or paid			5.1	4.7	4.4	4.1	3.8		2.2
General Partner
Distribution Made To Limited Partner [Line Items]
Distributions declared and/or paid			$ 0.9	0.7	0.6	0.5	0.5		0.3
Aggregate percentage of general partner interest	2.00%		2.00%
General Partner | General Partner Incentive
Distribution Made To Limited Partner [Line Items]
Distributions declared and/or paid			$ 2	$ 1.2	$ 0.4	$ 0.1	$ 0		$ 0
[1]	(1) The 2015 financial information has been retrospectively adjusted for the acquisition of the Shell Auger and Lockport Operations.

Net Income Per Limited Partne46

Net Income Per Limited Partner Unit - Additional Information (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended
	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015		Dec. 31, 2014
Partners' Capital Notes [Abstract]
Distributions paid per limited partner unit (in dollars per unit)	$ 0.2350	$ 0.2200	$ 0.2050	$ 0.1900	$ 0.1750	[1]	$ 0.1042
Distributions declared and/or paid	$ 41.7	$ 35.3	$ 30.3	$ 27.7	$ 24.1		$ 14.4
[1]	(1) The 2015 financial information has been retrospectively adjusted for the acquisition of the Shell Auger and Lockport Operations.

Net Income Per Limited Partne47

Net Income Per Limited Partner Unit - Schedule of Allocation of Net Income to Arrive at Net Income Per Limited Partner Unit (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Limited Partners Capital Account [Line Items]
Net income	$ 68	$ 49.1	[1],[2]
Less: Net income attributable to Parent	0	7.7	[2]
Net income attributable to the Partnership	55.3	23.6	[2]
Distribution declared	41.7	24.1
Income in excess of distributions	13.6	(0.5)
General Partner
Limited Partners Capital Account [Line Items]
Net income attributable to the Partnership	3.1	0.5
Distribution declared	2.9	0.5
Income in excess of distributions	0.2	0
Limited Partners' Common Units
Limited Partners Capital Account [Line Items]
Net income attributable to the Partnership	30.5	11.6
Distribution declared	23	11.8
Income in excess of distributions	7.5	(0.2)
Limited Partner's Subordinated Units
Limited Partners Capital Account [Line Items]
Net income attributable to the Partnership	21.7	11.5
Distribution declared	15.8	11.8
Income in excess of distributions	5.9	(0.3)
Noncontrolling Interest
Limited Partners Capital Account [Line Items]
Net income	12.7
Less: Net income attributable to noncontrolling interests	$ 12.7	$ 17.8	[2]
[1]	(1) The 2015 financial information has been retrospectively adjusted for the acquisition of the Shell Auger and Lockport Operations.
[2]	(1) The 2015 financial information has been retrospectively adjusted for the acquisition of the Shell Auger and Lockport Operations.

Net Income Per Limited Partne48

Net Income Per Limited Partner Unit - Schedule of Basic and Diluted Net Income Per Unit (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Distribution Made To Limited Partner [Line Items]
Distribution declared	$ 41.7	$ 24.1
Income in excess of distributions	13.6	(0.5)
Net income attributable to the Partnership	55.3	23.6	[1]
General Partner
Distribution Made To Limited Partner [Line Items]
Distribution declared	2.9	0.5
Income in excess of distributions	0.2	0
Net income attributable to the Partnership	3.1	0.5
Limited Partners' Common Units
Distribution Made To Limited Partner [Line Items]
Distribution declared	23	11.8
Income in excess of distributions	7.5	(0.2)
Net income attributable to the Partnership	$ 30.5	$ 11.6
Weighted average units outstanding
Weighted average unit outstanding, basic and diluted (in shares)	84.9	67.5
Net income per limited partner unit
Net income per Limited Partner Unit (in dollars per share)	$ 0.36	$ 0.17	[1]
Limited Partner's Subordinated Units
Distribution Made To Limited Partner [Line Items]
Distribution declared	$ 15.8	$ 11.8
Income in excess of distributions	5.9	(0.3)
Net income attributable to the Partnership	$ 21.7	$ 11.5
Weighted average units outstanding
Weighted average unit outstanding, basic and diluted (in shares)	67.5	67.5
Net income per limited partner unit
Net income per Limited Partner Unit (in dollars per share)	$ 0.32	$ 0.17	[1]
[1]	(1) The 2015 financial information has been retrospectively adjusted for the acquisition of the Shell Auger and Lockport Operations.

Income Taxes - Additional Infor

Income Taxes - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Income Tax Disclosure [Abstract]
Income tax expense	$ 0	$ 0.2	[1]
[1]	(1) The 2015 financial information has been retrospectively adjusted for the acquisition of the Shell Auger and Lockport Operations.

Commitments and Contingencies -

Commitments and Contingencies - Additional Information (Details) - USD ($)	Mar. 31, 2016	Dec. 31, 2015
Commitments and Contingencies Disclosure [Abstract]
Clean-up costs accrued	$ 0	$ 0
Accrual for litigation		$ 2,300,000

Subsequent Event - Additional I

Subsequent Event - Additional Information (Details) - $ / shares	Apr. 20, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	[1]	Dec. 31, 2014
Subsequent Event [Line Items]
Distributions paid per limited partner unit (in dollars per unit)		$ 0.2350	$ 0.2200	$ 0.2050	$ 0.1900	$ 0.1750		$ 0.1042
Subsequent Event
Subsequent Event [Line Items]
Distributions paid per limited partner unit (in dollars per unit)	$ 0.235
[1]	(1) The 2015 financial information has been retrospectively adjusted for the acquisition of the Shell Auger and Lockport Operations.