(Deficit) Equity - Schedule of Distributions Declared and/or Paid (Details) - USD ($) $ / shares in Units, $ in Millions		3 Months Ended
	Apr. 01, 2020	Mar. 31, 2022	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020
Distribution Made To Limited Partner [Line Items]
Distributions declared and/or paid		$ 130	$ 130	$ 130	$ 130	$ 173	$ 173
Distributions per Limited Partner unit (in dollars per share)		$ 0.3000	$ 0.3000	$ 0.3000	$ 0.3000	$ 0.4600	$ 0.4600
Preferred Units
Distribution Made To Limited Partner [Line Items]
Distributions per Limited Partner unit (in dollars per share)	$ 0.2363					$ 0.2363
Common Units | General Public
Distribution Made To Limited Partner [Line Items]
Distributions declared and/or paid		$ 37	$ 37	$ 37	$ 37	$ 57	$ 57
Common Units | Shell Pipeline Company L P
Distribution Made To Limited Partner [Line Items]
Distributions declared and/or paid		81	81	81	81	104	104
Preferred Units | Shell Pipeline Company L P
Distribution Made To Limited Partner [Line Items]
Distributions declared and/or paid		$ 12	$ 12	$ 12	$ 12	$ 12	$ 12