UNAUDITED CONSOLIDATED STATEMENT OF CHANGES IN (DEFICIT) EQUITY - USD ($) $ in Millions	Total	Accumulated Other Comprehensive Loss	Noncontrolling Interests	Common Unitholders	Common Unitholders Shell Pipeline Company L P	General Partner Shell Pipeline Company L P
Beginning balance at Dec. 31, 2018	$ (257)		$ 25	$ 3,459	$ (198)	$ (3,543)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	137		5	58	47	27
Other contributions from Parent	7					7
Distributions to unitholders and general partner	(129)			(49)	(40)	(40)
Distributions to noncontrolling interests	(3)		(3)
Ending balance at Mar. 31, 2019	(254)		27	3,464	(196)	(3,549)
Beginning balance at Dec. 31, 2019	(749)	$ (8)	26	3,450	(203)	(4,014)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	142		4	44	39	55
Distributions to unitholders and general partner	(162)			(57)	(50)	(55)
Distributions to noncontrolling interests	(5)		(5)
Ending balance at Mar. 31, 2020	$ (774)	$ (8)	$ 25	$ 3,437	$ (214)	$ (4,014)