Acquisitions (Tables)

12 Months Ended

Dec. 31, 2017

Business Combinations [Abstract]

Schedule of Net Assets Acquired

In connection with the October 2016 Acquisition, we acquired net assets under common control and recorded at their historical carrying value as follows:

Equity method investments (1) (2)	$	54.3
October 2016 Acquisition	$	54.3

⁽¹⁾  $51.3 million historical carrying value of 20.0% additional interest in Mars contributed by SPLC.

⁽²⁾  $3.0 million historical carrying value of 49.0% interest in Odyssey contributed by SOPUS.

In connection with the December 2017 Acquisition we acquired the following:

Cost investment (1)	$	22.3
Equity method investments (2)	76.1
Property, plant and equipment, net (3)	118.2
Partners' capital (4)	3.2
December 2017 Acquisition	$	219.8

⁽¹⁾Book Value of an additional 10.0% interest in Explorer contributed by SPLC.

⁽²⁾Book Value of an additional 22.9% interest in Mars and a 41.48% interest in LOCAP contributed by SPLC.

⁽³⁾Book Value of a 100% interest in the historical carrying value of property, plant and equipment, net contributed by SOPUS.

⁽⁴⁾Book Value of an additional 22.0% interest in Odyssey contributed by SOPUS.

In connection with the December 2016 Acquisition we acquired the following:

Cost investments (1)	$	2.1
Equity method investments (2)	39.9
December 2016 Acquisition	$	42.0

⁽¹⁾  $2.1 million purchase price of 1.0% in Cleopatra.

⁽²⁾  $20.8 million purchase price of 10.0% in Endymion and $19.1 million purchase price of 10.0% interest in Proteus.

In connection with the May 2016 Acquisition, we acquired historical carrying value of net assets under common control as follows:

Cost investments (1)	$	5.2
Equity method investments (2)	1.5
Partners' capital (3)	87.0
May 2016 Acquisition	$	93.7

⁽¹⁾ Book value of 3.0% additional interest in Colonial contributed by SPLC.

⁽²⁾ Book value of 1.0% additional interest in Bengal contributed by SPLC.

⁽³⁾ Book value of 30.0% additional interest in Zydeco from SPLC’s noncontrolling interest.

In connection with the May 2017 Acquisition we acquired historical carrying value of property, plant and equipment, net and other assets under common control as follows:

Delta	$	40.1
Na Kika	26.0
Refinery Gas Pipeline	134.6
May 2017 Acquisition	$	200.7

In connection with the November 2015 Acquisition we acquired historical carrying value of net assets under common control which is included in our consolidated balance sheet, as follows:

Property, plant and equipment, net (1)	$	95.2
Asset retirement obligation (2)	(1.3		)
November 2015 Acquisition	$	93.9

⁽¹⁾ Historical carrying value of property, plant and equipment, net contributed by SPLC.

⁽²⁾  Historical carrying value of asset retirement obligation assumed by us.

In connection with the May 2015 Acquisition we acquired historical carrying value of net assets under common control as follows:

Cost investments (1)	$	2.5
Partners' capital (2)	52.9
May 2015 Acquisition	$	55.4

⁽¹⁾  Historical carrying value of 1.388% additional interest in Colonial contributed by SPLC.

⁽²⁾  Historical carrying value of 19.5% additional interest in Zydeco from SPLC’s noncontrolling interest.

Schedule of Acquisitions

The results of the May 2017 Acquisition and the December 2017 Acquisition prior to the closing date of the acquisition are included in the respective acquisition columns and the consolidated results are included in “Consolidated Results” within the tables below:

	December 31, 2016
	Shell Midstream Partners, L.P. (1)			May 2017 Acquisition (2)		December 2017 Acquisition (3)			Consolidated Results
ASSETS
Current assets
Cash and cash equivalents	$	121.9		$	—	$	0.2		$	122.1
Accounts receivable – third parties, net	18.4			2.4		1.9			22.7
Accounts receivable – related parties	10.1			2.0		7.2			19.3
Allowance oil	9.0			2.7		—			11.7
Prepaid expenses	6.0			0.5		0.2			6.7
Total current assets	165.4			7.6		9.5			182.5
Equity method investments	262.4			—		62.3			324.7
Property, plant and equipment, net	398.0			212.6		123.1			733.7
Cost investments	39.8			—		22.3			62.1
Other assets	—			0.6		0.3			0.9
Total assets	$	865.6		$	220.8	$	217.5		$	1,303.9
LIABILITIES
Current liabilities
Accounts payable – third parties	$	1.5		$	2.6	$	3.1		$	7.2
Accounts payable – related parties	5.2			0.2		0.2			5.6
Deferred revenue – third parties	6.0			—		—			6.0
Deferred revenue – related parties	7.9			—		—			7.9
Accrued liabilities – third parties	5.6			1.3		5.3			12.2
Accrued liabilities – related parties	5.1			—		—			5.1
Total current liabilities	31.3			4.1		8.6			44.0
Noncurrent liabilities
Debt payable – related party	686.0			—		—			686.0
Lease liability – related party	24.9			—		—			24.9
Accrued liabilities – third party	—			—		6.3			6.3
Asset retirement obligations	1.4			—		5.0			6.4
Other unearned income	2.1			—		—			2.1
Total noncurrent liabilities	714.4			—		11.3			725.7
Total liabilities	745.7			4.1		19.9			769.7
Commitments and Contingencies (Note 13)
EQUITY
Common unitholders – public	2,485.7			—		—			2,485.7
Common unitholder – SPLC	(124.1		)	—		—			(124.1		)
Subordinated unitholder	(389.6		)	—		—			(389.6		)
General partner – SPLC	(1,873.7		)	—		—			(1,873.7		)
Total partners' capital	98.3			—		—			98.3
Noncontrolling interest	21.6			—		(0.1		)	21.5
Net parent investment	—			216.7		197.7			414.4
Total equity	119.9			216.7		197.6			534.2
Total liabilities and equity	$	865.6		$	220.8	$	217.5		$	1,303.9

⁽¹⁾ As previously reported in our Annual Report on Form 10-K for 2016.

⁽²⁾ The financial position of the May 2017 Acquisition as of December 31, 2016.

⁽³⁾ The financial position of the December 2017 Acquisition as of December 31, 2016.

	Twelve Months Ended December 31, 2016
	Shell Midstream Partners, L.P. (1)		May 2017 Acquisition (2)		December 2017 Acquisition (3)			Consolidated Results
Revenue
Transportation, terminaling and storage services - third parties	$	201.5	$	33.0	$	17.0		$	251.5
Transportation, terminaling and storage services - related parties	89.8		26.8		71.7			188.3
Lease revenue - related parties	—		—		13.1			13.1
Total revenue	291.3		59.8		101.8			452.9
Costs and expenses
Operations and maintenance – third parties	46.9		13.3		16.7			76.9
Operations and maintenance – related parties	20.7		8.9		10.4			40.0
Loss on disposition of fixed assets	0.1		—		0.1			0.2
General and administrative – third parties	8.1		0.3		1.3			9.7
General and administrative – related parties	23.1		7.5		13.1			43.7
Depreciation, amortization and accretion	23.7		12.9		6.5			43.1
Property and other taxes	8.2		5.2		2.4			15.8
Total costs and expenses	130.8		48.1		50.5			229.4
Operating income	160.5		11.7		51.3			223.5
Income from equity investments	101.1		—		37.0			138.1
Dividend income from cost investments	16.1		—		12.2			28.3
Other loss	—		—		(0.1		)	(0.1		)
Investment, dividend and other loss	117.2		—		49.1			166.3
Interest expense, net	12.3		—		—			12.3
Income before income taxes	265.4		11.7		100.4			377.5
Income tax expense	—		—		—			—
Net income	265.4		11.7		100.4			377.5
Less: Net income attributable to Parent	—		11.7		90.6			102.3
Less: Net income attributable to noncontrolling interests	20.5		—		9.8			30.3
Net income attributable to the Partnership	$	244.9	$	—	$	—		$	244.9

⁽¹⁾ As previously reported in our Annual Report on Form 10-K for 2016.

⁽²⁾ Our Parent's results of the May 2017 Acquisition for the year ended December 31, 2016.

⁽³⁾ Our Parent's results of the December 2017 Acquisition for the year ended December 31, 2016.

	Twelve Months Ended December 31, 2015
	Shell Midstream Partners, L.P. (1)			May 2017 Acquisition (2)		December 2017 Acquisition (3)		Consolidated Results
Revenue
Transportation, terminaling and storage services - third parties	$	222.8		$	29.0	$	16.6	$	268.4
Transportation, terminaling and storage services - related parties	103.7			34.2		79.2		217.1
Total revenue	326.5			63.2		95.8		485.5
Costs and expenses
Operations and maintenance – third parties	46.3			18.9		19.6		84.8
Operations and maintenance – related parties	18.5			8.3		12.2		39.0
Loss on disposition of fixed assets	—			—		0.3		0.3
General and administrative – third parties	10.2			1.8		1.4		13.4
General and administrative – related parties	24.6			5.5		12.4		42.5
Depreciation, amortization and accretion	21.6			10.2		6.1		37.9
Property and other taxes	7.5			5.0		2.5		15.0
Total costs and expenses	128.7			49.7		54.5		232.9
Operating income	197.8			13.5		41.3		252.6
Income from equity investments	70.1			—		34.6		104.7
Dividend income from cost investments	9.2			—		11.4		20.6
Other income	—			0.3		—		0.3
Investment, dividend and other income	79.3			0.3		46.0		125.6
Interest expense, net	4.3			—		—		4.3
Income before income taxes	272.8			13.8		87.3		373.9
Income tax benefit	(0.1		)	—		—		(0.1		)
Net income	272.9			13.8		87.3		374.0
Less: Net income attributable to Parent	39.3			13.8		80.7		133.8
Less: Net income attributable to noncontrolling interests	66.5			—		6.6		73.1
Net income attributable to the Partnership	$	167.1		$	—	$	—	$	167.1

⁽¹⁾ As previously reported in our Annual Report on Form 10-K for 2015.

⁽²⁾ Our Parent's results of the May 2017 Acquisition for the year ended December 31, 2015.

⁽³⁾ Our Parent's results of the December 2017 Acquisition for the year ended December 31, 2015.

	Twelve Months Ended December 31, 2016
	Shell Midstream Partners, L.P. (1)			May 2017 Acquisition (2)			December 2017 Acquisition (3)			Consolidated Results
Cash flows from operating activities
Net income	$	265.4		$	11.7		$	100.4		$	377.5
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation, amortization and accretion	23.7			12.9			6.5			43.1
Loss on disposition of fixed asset	0.1			—			0.1			0.2
Non-cash interest expense	2.7			—			—			2.7
Undistributed equity earnings	1.8			—			2.3			4.1
Changes in operating assets and liabilities
Accounts receivable	0.1			0.7			(0.5		)	0.3
Allowance oil	(4.8		)	0.8			—			(4.0		)
Prepaid expenses and other assets	(1.0		)	0.9			—			(0.1		)
Accounts payable	(1.5		)	1.1			0.7			0.3
Deferred revenue	8.2			(0.3		)	—			7.9
Accrued liabilities	(1.7		)	—			(1.1		)	(2.8		)
Net cash provided by operating activities	293.0			27.8			108.4			429.2
Cash flows from investing activities
Capital expenditures	(28.3		)	(7.7		)	(9.8		)	(45.8		)
Acquisitions from Parent	(172.8		)	—			—			(172.8		)
Third party acquisitions	(42.0		)	—			—			(42.0		)
Return of investment	15.0			—			0.8			15.8
Net cash used in investing activities	(228.1		)	(7.7		)	(9.0		)	(244.8		)
Cash flows from financing activities
Net proceeds from public offerings	818.1			—			—			818.1
Borrowing under credit facility	638.7			—			—			638.7
Contributions from general partner	9.8			—			—			9.8
Repayment of credit facilities	(410.0		)	—			—			(410.0		)
Capital distributions to general partner	(896.3		)	—			—			(896.3		)
Distributions to noncontrolling interest	(20.3		)	—			(9.9		)	(30.2		)
Distributions to unitholders and general partner	(179.9		)	—			—			(179.9		)
Other contribution from Parent	4.6			9.8			—			14.4
Credit facility issuance costs	(0.6		)	—			—			(0.6		)
Net distributions to Parent	—			(29.9		)	(90.1		)	(120.0		)
Capital lease payments	(0.1		)	—			—			(0.1		)
Net cash used in financing activities	(36.0		)	(20.1		)	(100.0		)	(156.1		)
Net increase in cash and cash equivalents	28.9			—			(0.6		)	28.3
Cash and cash equivalents at beginning of the period	93.0			—			0.8			93.8
Cash and cash equivalents at end of the period	$	121.9		$	—		$	0.2		$	122.1
Non-cash investing activity
Increase in asset retirement obligation asset	—			—			(1.0		)	(1.0		)
Supplemental Cash Flow Information
Non-cash investing and financing transactions

Change in accrued capital expenditures	0.5		(3.0	)	1.4	(1.1	)
Other non-cash contributions from Parent	0.2		—		—	0.2
Other non-cash capital distributions to general partner	(7.1	)	—		—	(7.1	)
Other non-cash contribution from general partner	7.1		—		—	7.1

⁽¹⁾ As previously reported in our Annual Report on Form 10-K for 2016.

⁽²⁾ Our Parent's results of the May 2017 Acquisition for the year ended December 31, 2016.

⁽³⁾ Our Parent's results of the December 2017 Acquisition for the year ended December 31, 2016.

	Twelve Months Ended December 31, 2015
	Shell Midstream Partners, L.P. (1)			May 2017 Acquisition (2)			December 2017 Acquisition (3)			Consolidated Results
Cash flows from operating activities
Net income	$	272.9		$	13.8		$	87.3		$	374.0
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation, amortization and accretion	21.6			10.2			6.1			37.9
Loss on disposition of fixed asset	—			—			0.3			0.3
Allowance oil reduction to net realizable value	1.6			1.1			—			2.7
Undistributed equity earnings	(0.6		)	—			(3.7		)	(4.3		)
Changes in operating assets and liabilities
Accounts receivable	—			4.5			(1.1		)	3.4
Allowance oil	(2.8		)	(1.9		)	—			(4.7		)
Prepaid expenses and other assets	(1.2		)	(0.8		)	1.3			(0.7		)
Accounts payable	(4.5		)	(0.3		)	(2.9		)	(7.7		)
Deferred revenue	(13.8		)	(0.4		)	—			(14.2		)
Accrued liabilities	9.5			(0.1		)	(0.3		)	9.1
Net cash provided by operating activities	282.7			26.1			87.0			395.8
Cash flows from investing activities
Capital expenditures	(16.2		)	(23.7		)	(11.8		)	(51.7		)
Acquisitions	(179.8		)	—			—			(179.8		)
Return of investment	6.8			—			5.7			12.5
Payment of pre-IPO distributions from investments to SPLC	(11.9		)							(11.9		)
Net cash used in investing activities	(201.1		)	(23.7		)	(6.1		)	(230.9		)
Cash flows from financing activities
Net proceeds from private equity placement	297.4			—			—			297.4
Net proceeds from public offerings	296.8			—			—			296.8
Borrowing under credit facilities	458.2			—			—			458.2
Contributions from general partner	6.1			—			—			6.1
Capital distributions to general partner	(1,002.1		)	—			—			(1,002.1		)
Distributions to noncontrolling interest	(67.1		)	—			(6.1		)	(73.2		)
Distributions to unitholders and general partner	(96.5		)	—			—			(96.5		)
Other contributions from Parent	11.1			29.3			—			40.4
Credit facility issuance costs	(0.3		)	—			—			(0.3		)
Net distributions to Parent	(42.4		)	(31.7		)	(74.0		)	(148.1		)
Net cash used in financing activities	(138.8		)	(2.4		)	(80.1		)	(221.3		)
Net decrease in cash and cash equivalents	(57.2		)	—			0.8			(56.4		)
Cash and cash equivalents at beginning of the period	150.2			—			—			150.2
Cash and cash equivalents at end of the period	$	93.0		$	—		$	0.8		$	93.8

Non-cash investing activity
Increase in asset retirement obligation asset	—		—		(0.2	)	(0.2	)
Supplemental Cash Flow Information
Non-cash investing and financing transactions
Change in accrued capital expenditures	2.9		(9.1	)	(0.3	)	(6.5	)
Contribution of fixed assets from Parent	0.4		—		—		0.4
Commencement of capital lease	22.8		—		—		22.8
Other non-cash contribution from Parent	1.8		—		—		1.8
Net assets not contributed to Parent	(6.4	)	—		—		(6.4	)

⁽¹⁾ As previously reported in our Annual Report on Form 10-K for 2015.

⁽²⁾ Our Parent's results of the May 2017 Acquisition for the year ended December 31, 2015.

⁽³⁾ Our Parent's results of the December 2017 Acquisition for the year ended December 31, 2015.