Segment Information - Revenues and Operating Margin (Details) - USD ($) $ in Millions		3 Months Ended			9 Months Ended
		Sep. 30, 2022	Sep. 30, 2021		Sep. 30, 2022		Sep. 30, 2021
Revenues:
Revenues		$ 5,360.1	$ 4,459.7		$ 16,375.0		$ 11,508.2
Sales of Commodities [Member]
Revenues:
Revenues		4,800.3	4,118.1		14,990.7		10,577.3
Fees from Midstream Services [Member]
Revenues:
Revenues		559.8	341.6		1,384.3		930.9
Gathering and Processing [Member]
Revenues:
Revenues		3,331.2	2,148.1		8,876.7		4,886.1
Operating margin	[1]	564.6	361.4		1,437.0		938.2
Logistics and Transportation [Member]
Revenues:
Revenues		5,081.9	4,204.5		15,699.5		10,931.4
Operating margin	[1]	340.2	280.7		1,014.6		920.5
Other [Member]
Revenues:
Revenues		(112.2)	13.5		(294.9)		(55.6)
Operating margin		(112.2)	13.5	[1]	(294.9)	[1]	(55.6)	[1]
Corporate and Eliminations [Member]
Revenues:
Revenues		(2,940.8)	(1,906.4)		(7,906.3)		(4,253.7)
Operating Segments [Member]
Revenues:
Revenues		5,360.1	4,459.7		16,375.0		11,508.2
Operating Segments [Member] | Sales of Commodities [Member]
Revenues:
Revenues		4,800.3	4,118.1		14,990.7		10,577.3
Operating Segments [Member] | Fees from Midstream Services [Member]
Revenues:
Revenues		559.8	341.6		1,384.3		930.9
Operating Segments [Member] | Gathering and Processing [Member]
Revenues:
Revenues		562.7	361.5		1,421.2		942.9
Operating Segments [Member] | Gathering and Processing [Member] | Sales of Commodities [Member]
Revenues:
Revenues		180.7	156.2		577.0		446.2
Operating Segments [Member] | Gathering and Processing [Member] | Fees from Midstream Services [Member]
Revenues:
Revenues		382.0	205.3		844.2		496.7
Operating Segments [Member] | Logistics and Transportation [Member]
Revenues:
Revenues		4,909.6	4,084.7		15,248.7		10,620.9
Operating Segments [Member] | Logistics and Transportation [Member] | Sales of Commodities [Member]
Revenues:
Revenues		4,731.8	3,948.4		14,708.6		10,186.7
Operating Segments [Member] | Logistics and Transportation [Member] | Fees from Midstream Services [Member]
Revenues:
Revenues		177.8	136.3		540.1		434.2
Operating Segments [Member] | Other [Member]
Revenues:
Revenues		(112.2)	13.5		(294.9)		(55.6)
Operating Segments [Member] | Other [Member] | Sales of Commodities [Member]
Revenues:
Revenues		(112.2)	13.5		(294.9)		(55.6)
Intersegment Eliminations [Member] | Gathering and Processing [Member]
Revenues:
Revenues		2,768.5	1,786.6		7,455.5		3,943.2
Intersegment Eliminations [Member] | Gathering and Processing [Member] | Sales of Commodities [Member]
Revenues:
Revenues		2,768.2	1,786.0		7,455.4		3,940.4
Intersegment Eliminations [Member] | Gathering and Processing [Member] | Fees from Midstream Services [Member]
Revenues:
Revenues		0.3	0.6		0.1		2.8
Intersegment Eliminations [Member] | Logistics and Transportation [Member]
Revenues:
Revenues		172.3	119.8		450.8		310.5
Intersegment Eliminations [Member] | Logistics and Transportation [Member] | Sales of Commodities [Member]
Revenues:
Revenues		160.7	108.3		416.5		283.5
Intersegment Eliminations [Member] | Logistics and Transportation [Member] | Fees from Midstream Services [Member]
Revenues:
Revenues		11.6	11.5		34.3		27.0
Intersegment Eliminations [Member] | Corporate and Eliminations [Member]
Revenues:
Revenues		(2,940.8)	(1,906.4)		(7,906.3)		(4,253.7)
Intersegment Eliminations [Member] | Corporate and Eliminations [Member] | Sales of Commodities [Member]
Revenues:
Revenues		(2,928.9)	(1,894.3)		(7,871.9)		(4,223.9)
Intersegment Eliminations [Member] | Corporate and Eliminations [Member] | Fees from Midstream Services [Member]
Revenues:
Revenues		$ (11.9)	$ (12.1)		$ (34.4)		$ (29.8)

[1] Operating margin is calculated by subtracting Product purchases and fuel and Operating expenses from Revenues.