CONSOLIDATED STATEMENTS OF CHANGES IN PARTNERS' CAPITAL - USD ($) $ in Millions	Total	Accumulated Other Comprehensive Income (Loss)	Partners' Capital
Beginning Balance at Dec. 31, 2018	$ 4,861.9	$ (85.2)	$ 4,947.1
Add (deduct):
Net income	295.7		295.7
Distributions paid	(102.2)		(102.2)
Other comprehensive income, net of tax	4.1	4.1
Ending Balance at Dec. 31, 2019	5,059.5	(81.1)	5,140.6
Add (deduct):
Net income	290.5		290.5
Distributions paid	(102.2)		(102.2)
Other comprehensive income, net of tax	1.3	1.3
Ending Balance at Dec. 31, 2020	5,249.1	(79.8)	5,328.9
Add (deduct):
Net income	315.0		315.0
Distributions paid	(102.2)		(102.2)
Other comprehensive income, net of tax	7.2	7.2
Ending Balance at Dec. 31, 2021	$ 5,469.1	$ (72.6)	$ 5,541.7