STATEMENTS OF CONSOLIDATED OPERATIONS - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Revenues:
Third parties	$ 27,163.0	$ 32,721.9	$ 36,426.5
Related parties	36.7	67.3	107.7
Total revenues	27,199.7	32,789.2	36,534.2
Operating costs and expenses:
Third party and other costs	21,160.5	25,649.8	29,991.2
Related parties	1,210.6	1,412.0	1,406.1
Total operating costs and expenses	22,371.1	27,061.8	31,397.3
General and administrative costs:
Third party and other costs	83.4	75.3	77.4
Related parties	136.2	136.4	130.9
Total general and administrative costs	219.6	211.7	208.3
Total costs and expenses	22,590.7	27,273.5	31,605.6
Equity in income of unconsolidated affiliates	426.1	563.0	480.0
Operating income	5,035.1	6,078.7	5,408.6
Other income (expense):
Interest expense	(1,287.4)	(1,243.0)	(1,096.7)
Change in fair market value of Liquidity Option	(2.3)	(119.6)	(56.1)
Gain on step acquisition of unconsolidated affiliate	0.0	0.0	39.4
Interest income	13.4	11.6	3.6
Other, net	2.6	5.0	0.0
Total other expense, net	(1,273.7)	(1,346.0)	(1,109.8)
Income before income taxes	3,761.4	4,732.7	4,298.8
Benefit from (provision for) income taxes	124.3	(45.6)	(60.3)
Net income	3,885.7	4,687.1	4,238.5
Net income attributable to noncontrolling interests	(110.1)	(95.8)	(66.1)
Net income attributable to preferred units	(0.9)	0.0	0.0
Net income attributable to common unitholders	$ 3,774.7	$ 4,591.3	$ 4,172.4
Earnings per unit:
Basic earnings per common unit (in dollars per unit)	$ 1.71	$ 2.09	$ 1.91
Diluted earnings per common unit (in dollars per unit)	$ 1.71	$ 2.09	$ 1.91