UNAUDITED CONDENSED CONSOLIDATED STATEMENT OF CHANGES IN EQUITY - 3 months ended Mar. 31, 2017 - USD ($) $ in Millions	Total	Noncontrolling Interest	Common units – public	Common units – public Shell Pipeline Company L P	Subordinated Units Shell Pipeline Company L P	General Partner Shell Pipeline Company L P
Beginning Balance at Dec. 31, 2016	$ 119.9	$ 21.6	$ 2,485.7	$ (124.1)	$ (389.6)	$ (1,873.7)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	73.0	2.2	29.3	29.4		12.1
Other contribution from parent	6.4					6.4
Distributions to unitholders and general partner	(58.6)		(24.5)	(5.9)	(18.7)	(9.5)
Distribution to noncontrolling interest	(3.2)	(3.2)
Expiration of subordinated period				(408.3)	408.3
Ending Balance at Mar. 31, 2017	$ 137.5	$ 20.6	$ 2,490.5	$ (508.9)	$ 0.0	$ (1,864.7)