Related Party Transactions - Additional Information (Details)		3 Months Ended			9 Months Ended
	Sep. 27, 2016 USD ($)	Sep. 30, 2016 USD ($) credit_facility	Sep. 30, 2015 USD ($)		Sep. 30, 2016 USD ($) credit_facility	Sep. 30, 2015 USD ($)		Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Jun. 30, 2015	Mar. 31, 2015	Nov. 03, 2014 USD ($)
Related Party Transaction [Line Items]
Indemnification liability deductible amount													$ 500,000
Aggregate liability of SPLC		$ 10,700,000.0			$ 10,700,000.0								$ 15,000,000
Revenue from related parties		$ 21,800,000	$ 31,200,000	[1]	$ 65,900,000	$ 76,800,000	[1]
Zydeco
Related Party Transaction [Line Items]
Noncontrolling Interest		7.50%	37.50%		7.50%	37.50%		7.50%	37.50%	37.50%	37.50%	57.00%
Total distributions to general partners		$ 35,100,000	$ 25,000,000		$ 80,700,000	$ 70,200,000
Transportation Services
Related Party Transaction [Line Items]
Revenue from related parties		19,500,000	29,400,000		59,400,000	71,100,000
Storage Services
Related Party Transaction [Line Items]
Revenue from related parties		$ 2,300,000	1,800,000		$ 6,500,000	5,700,000
Shell Treasury Center West Inc
Related Party Transaction [Line Items]
Number of revolving credit facilities | credit_facility		2			2
Zydeco, Mars, Bengal, Poseidon and Colonial
Related Party Transaction [Line Items]
Total distributions to general partners		$ 63,900,000	50,900,000		$ 174,800,000	128,700,000
SPLC
Related Party Transaction [Line Items]
General and administrative - related parties		1,100,000	1,900,000		4,100,000	4,700,000
General insurance expense		$ 1,000,000	$ 900,000		$ 2,800,000	$ 2,600,000
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
Odyssey Pipeline L.L.C.
Related Party Transaction [Line Items]
Interest acquired	49.00%
Mars
Related Party Transaction [Line Items]
Interest acquired	20.00%
October 2016 Acquisitions
Related Party Transaction [Line Items]
Consideration transferred	$ 350,000,000

[1] (1) The 2015 financial information has been retrospectively adjusted for the acquisition of the Shell Auger and Lockport Operations.