UNAUDITED CONDENSED STATEMENTS OF CONSOLIDATED COMPREHENSIVE INCOME - USD ($) $ in Millions	3 Months Ended			9 Months Ended
	Sep. 30, 2020		Sep. 30, 2019	Sep. 30, 2020		Sep. 30, 2019
UNAUDITED CONDENSED STATEMENTS OF CONSOLIDATED COMPREHENSIVE INCOME
Net income	$ 1,084.0		$ 1,044.8	$ 3,519.8		$ 3,561.7
Commodity hedging derivative instruments:
Changes in fair value of cash flow hedges	(4.2)		72.3	392.7		58.6
Reclassification of losses (gains) to net income	29.5		(91.5)	(334.8)		(152.0)
Interest rate hedging derivative instruments:
Changes in fair value of cash flow hedges	62.6		(18.6)	(207.7)		(23.8)
Reclassification of losses to net income	9.9		9.4	29.2		27.8
Total cash flow hedges	97.8		(28.4)	(120.6)		(89.4)
Other	0.0		0.0	(0.1)		(0.6)
Total other comprehensive income (loss)	97.8		(28.4)	(120.7)		(90.0)
Comprehensive income	1,181.8		1,016.4	3,399.1		3,471.7
Comprehensive income attributable to noncontrolling interests	(31.4)		(25.6)	(82.4)		(67.3)
Comprehensive income attributable to preferred units	0.0	[1]	0.0	0.0	[1]	0.0
Comprehensive income attributable to common unitholders	$ 1,150.4		$ 990.8	$ 3,316.7		$ 3,404.4

[1] * Amount is negligible