CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Millions, $ in Millions		12 Months Ended
		Dec. 31, 2015		Dec. 31, 2014		Dec. 31, 2013
Revenue
Third parties		$ 222.8	[1]	$ 155.0	[2]	$ 65.0	[2]
Related parties		103.7	[1]	95.3	[2]	82.8	[2]
Total revenue		326.5	[1]	250.3	[2]	147.8	[2]
Costs and expenses
Operations and maintenance - third parties		46.3	[1]	41.6	[2]	45.3	[2]
Operations and maintenance - related parties		18.5	[1]	21.7	[2]	18.7	[2]
Loss (gain) from disposition of fixed assets		0.0	[1]	0.2	[2]	(20.8)	[2]
General and administrative - third parties		10.2	[1]	3.4	[2]	1.3	[2]
General and administrative - related parties	[3]	24.6	[1]	17.0	[2]	13.9	[2]
Depreciation, amortization and accretion		21.6	[1]	18.4	[2]	13.7	[2]
Property and other taxes		7.5	[1]	6.2	[2]	5.1	[2]
Total costs and expenses		128.7	[1]	108.5	[2]	77.2	[2]
Operating income		197.8	[1]	141.8	[2]	70.6	[2]
Income from equity investments		70.1	[1]	6.7	[2]	0.0	[2]
Dividend income from investment		9.2	[1]	0.8	[2]	0.0	[2]
Investment, dividend and other income		79.3	[1]	7.5	[2]	0.0	[2]
Interest expense, net		4.3	[1]	0.2	[2]	0.0	[2]
Income before income taxes		272.8	[1]	149.1	[2]	70.6	[2]
Income tax expense (benefit)		(0.1)	[1]	0.2	[2]	0.1	[2]
Net income	[2]	272.9	[1]	148.9		$ 70.5
Less: Net income attributable to the Predecessors		39.3	[1]	124.1	[2]
Less: Net income attributable to noncontrolling interests		66.5	[1]	11.4	[2]
Net income attributable to the Partnership		167.1	[1]	13.4	[2]
General Partner's interest in net income attributable to the Partnership		5.0	[1]	0.3	[2]
Limited Partners' interest in net income attributable to the Partnership		$ 162.1	[1]	$ 13.1	[2]
Net income per Limited Partner Unit - Basic and Diluted (in dollars):
Cash distribution paid per limited partner unit (in dollars):		$ 0.7900	[1]	$ 0.1042	[2]
Weighted average Limited Partner Units outstanding - Basic and Diluted (in millions):
Weighted average limited partner units - Diluted		143.8		137.7
Common Units
Net income per Limited Partner Unit - Basic and Diluted (in dollars):
Net income subsequent to the Offering per limited partner unit - Basic		$ 1.16	[1]	$ 0.10	[2]
Net income subsequent to the Offering per limited partner unit - Diluted		$ 1.13	[1]	$ 0.10	[2]
Common Units | Shell Pipeline Company L P
Weighted average Limited Partner Units outstanding - Basic and Diluted (in millions):
Weighted average limited partner units - Basic		21.5	[1]	21.5	[2]
Weighted average limited partner units - Diluted		21.5	[1]	21.5	[2]
Subordinated Units
Net income per Limited Partner Unit - Basic and Diluted (in dollars):
Net income subsequent to the Offering per limited partner unit - Basic		$ 1.14	[1]	$ 0.10	[2]
Net income subsequent to the Offering per limited partner unit - Diluted		$ 1.13	[1]	$ 0.10	[2]
Subordinated Units | Shell Pipeline Company L P
Costs and expenses
Net income		$ 76.6		$ 6.5
Weighted average Limited Partner Units outstanding - Basic and Diluted (in millions):
Weighted average limited partner units - Basic		67.5	[1]	67.5	[2]
Weighted average limited partner units - Diluted		67.5	[1]	67.5	[2]
Common unitholders - public
Costs and expenses
Net income		$ 61.1		$ 4.5
Weighted average Limited Partner Units outstanding - Basic and Diluted (in millions):
Weighted average limited partner units - Basic		51.9	[1]	46.0	[2]		[2]
Weighted average limited partner units - Diluted		54.1	[1]	46.0	[2]
Common unitholders - public | Shell Pipeline Company L P
Costs and expenses
Net income		$ 24.4		$ 2.1

[1] The 2015 financial information has been retrospectively adjusted for the acquisition of the Shell Auger and Lockport Operations from January 1, 2015 through September 30, 2015.

[2] Prior period financial information has been retrospectively adjusted for the acquisition of the Shell Auger and Lockport Operations.

[3] For 2015 and 2014, we incurred $7.4 million and $3.5 million, respectively, under the Management Agreement and $8.5 million and $1.4 million, respectively, under the Omnibus Agreement for general and administrative services.