(Deficit) Equity (Tables)

12 Months Ended

Dec. 31, 2018

Equity [Abstract]

Schedule of Number of Units Outstanding

The changes in the number of units outstanding from December 31, 2016 through December 31, 2018 are as follows:

	Public Common	SPLC Common	SPLC Subordinated	General Partner	Total
Balance as of December 31, 2016	88,367,308	21,475,068	67,475,068	3,618,723	180,936,167
Expiration of subordination period	—	67,475,068	(67,475,068)	—	—
Units issued in connection with ATM program	5,294,925	—	—	108,060	5,402,985
Units issued in connection with public offerings	5,170,000	—	—	105,510	5,275,510
Balance as of December 31, 2017	98,832,233	88,950,136	—	3,832,293	191,614,662
Units issued in connection with equity offerings	25,000,000	11,029,412	—	735,295	36,764,707
Balance as of December 31, 2018	123,832,233	99,979,548	—	4,567,588	228,379,369

Schedule of Distributions Declared and/or Paid

The following table details the distributions declared and/or paid for the periods presented:

Date Paid or to be Paid	Three Months Ended	Public Common		SPLC Common		SPLC Subordinated		General Partner						Distributions per Limited Partner Unit
								IDR’s		2%		Total
		(in millions, except per unit amounts)
February 11, 2016	December 31, 2015	$	13.9	$	4.7	$	14.8	$	1.2	$	0.7	$	35.3	$	0.22000
May 12, 2016	March 21, 2016	17.9		5.1		15.8		2.0		0.9		41.7		0.23500
August 12, 2016	June 30, 2016	22.0		5.4		16.9		3.7		1.0		49.0		0.25000
November 14, 2016	September 30, 2016	23.3		5.7		17.8		6.0		1.1		53.9		0.26375
February 14, 2017	December 31, 2016	24.5		5.9		18.7		8.3		1.2		58.6		0.27700
May 12, 2017	March 31, 2017	25.7		25.9		—		10.7		1.3		63.6		0.29100
August 14, 2017	June 30, 2017	26.9		27.0		—		12.9		1.4		68.2		0.30410
November 14, 2017	September 30, 2017	31.4		28.3		—		16.2		1.5		77.4		0.31800
February 14, 2018	December 31, 2017	32.9		29.6		—		18.9		1.7		83.1		0.33300
May 15, 2018	March 31, 2018	43.1		34.8		—		25.7		2.1		105.7		0.34800
August 14, 2018	June 30, 2018	45.2		36.5		—		29.4		2.3		113.4		0.36500
November 14, 2018	September 30, 2018	47.3		38.2		—		33.1		2.4		121.0		0.38200
February 14, 2019	December 31, 2018 (1)	49.5		40.0		—		36.9		2.6		129.0		0.40000

⁽¹⁾ For more information see Note 15 - Subsequent Events.