UNAUDITED CONDENSED STATEMENTS OF CONSOLIDATED COMPREHENSIVE INCOME - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
UNAUDITED CONDENSED STATEMENTS OF CONSOLIDATED COMPREHENSIVE INCOME
Net income	$ 1,362.6	$ 1,375.0
Commodity hedging derivative instruments:
Changes in fair value of cash flow hedges	(461.2)	475.1
Reclassification of losses (gains) to net income	616.1	(155.6)
Interest rate hedging derivative instruments:
Changes in fair value of cash flow hedges	182.9	(278.1)
Reclassification of losses to net income	8.6	9.6
Total cash flow hedges	346.4	51.0
Other	(0.2)	(0.1)
Total other comprehensive income	346.2	50.9
Comprehensive income	1,708.8	1,425.9
Comprehensive income attributable to noncontrolling interests	(21.3)	(24.9)
Comprehensive income attributable to preferred units	(0.9)	0.0
Comprehensive income attributable to common unitholders	$ 1,686.6	$ 1,401.0