CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY (Unaudited) - USD ($) $ in Millions	Total	Accumulated Other Comp Income (Loss)	Limited Partner Common Units	General Partner
Beginning balance at Dec. 31, 2014	$ 4,102.3	$ (72.8)	$ 4,095.1	$ 80.0
Add (deduct):
Net Income	77.7		76.2	1.5
Distributions paid	(24.8)		(24.3)	(0.5)
Sale of common units, net of related transaction costs	107.2		107.2
Capital contribution from general partner	2.2			2.2
Other comprehensive income (loss), net of tax	(1.5)	(1.5)
Ending balance at Mar. 31, 2015	4,263.1	(74.3)	4,254.2	83.2
Beginning balance at Dec. 31, 2015	4,326.7	(84.3)	4,326.2	84.8
Add (deduct):
Net Income	101.0		99.0	2.0
Distributions paid	(25.5)		(25.0)	(0.5)
Other comprehensive income (loss), net of tax	1.2	1.2
Ending balance at Mar. 31, 2016	$ 4,403.4	$ (83.1)	$ 4,400.2	$ 86.3