(Deficit) Equity (Tables)

12 Months Ended

Dec. 31, 2020

Equity [Abstract]

Schedule of Capital Units

The changes in the number of units outstanding from December 31, 2018 through December 31, 2020 are as follows:

(in units)	SPLC Preferred	Public Common	SPLC Common	General Partner
Balance as of December 31, 2018	—	123,832,233	99,979,548	4,567,588
June 2019 Acquisition	—	—	9,477,756	193,424
Balance as of December 31, 2019	—	123,832,233	109,457,304	4,761,012
April 2020 Acquisition	50,782,904	—	160,000,000	(4,761,012)
Balance as of December 31, 2020	50,782,904	123,832,233	269,457,304	—

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 Preferred		SPLC Common		General Partner						Distributions per Limited Partner Unit
								IDRs		2%		Total
		(in millions, except per unit amounts)
February 14, 2018	December 31, 2017	$	33	$	—	$	30	$	18	$	2	$	83	$	0.33300
May 15, 2018	March 31, 2018	43		—		35		26		2		106		0.34800
August 14, 2018	June 30, 2018	46		—		36		29		2		113		0.36500
November 14, 2018	September 30, 2018	47		—		38		33		3		121		0.38200
February 14, 2019	December 31, 2018	49		—		40		37		3		129		0.40000
May 15, 2019	March 31, 2019 (1)	51		—		42		23		3		119		0.41500
August 14, 2019	June 30, 2019 (1)	53		—		47		28		3		131		0.43000
November 14, 2019	September 30, 2019 (1)	56		—		48		33		3		140		0.44500
February 14, 2020	December 31, 2019	57		—		50		52		3		162		0.46000
May 15, 2020	March 31, 2020	57		—		50		52 (3)		3 (4)		162		0.46000
August 14, 2020	June 30, 2020 (2)	57		12		104		—		—		173		0.46000
November 13, 2020	September 30, 2020 (2)	57		12		104		—		—		173		0.46000
February 12, 2021	December 31, 2020 (2)(5)	57		12		104		—		—		173		0.46000

(1) Includes the impact of waived distributions to the holders of IDRs with respect to the Second Amendment as described above.

(2) Includes the impact of waived distributions to SPLC with respect to the April 2020 Transaction as described above.

(3) This amount represents the Final IDR Payment (as defined in the Partnership Interests Restructuring Agreement) to which our general partner (or its assignee) was entitled pursuant to the Partnership Interests Restructuring Agreement. Also pursuant to the Partnership Interests Restructuring Agreement, our general partner agreed (on its own behalf and on behalf of its assignees) to waive any distributions that it would otherwise be entitled to receive with respect to the newly-issued 160 million common units that it received in the April 2020 Transaction for the quarter in which it receives the Final IDR Payment. Our general partner is not entitled to any payments with respect to the IDRs going forward, as they have been cancelled as a part of the April 2020 Transaction.

(4) This amount represents the final distribution payment on the 2% economic general partner interest. Our general partner is not entitled to any payments with respect to the economic general partner interest going forward, as it was converted into a non-economic general partner interest as a part of the April 2020 Transaction.

(5) See Note 16 — Subsequent Event(s) for additional information.