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Segment Information - Summary of Consolidated Revenues Disaggregated by Product and Service (Details) - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Revenue from External Customer [Line Items]
Revenue recognized		$ 3,047.7	$ 2,719.6	$ 7,036.1	$ 6,521.5
Total revenues		3,562.0	3,403.7	8,124.4	7,924.2
Derivative Activities - Hedge [Member]
Revenue from External Customer [Line Items]
Non-customer revenue		32.2	49.8	29.0	95.0
Derivative Activities - Non-hedge [Member]
Revenue from External Customer [Line Items]
Non-customer revenue	[1]	(88.8)	145.2	(120.7)	323.2
Natural Gas [Member]
Revenue from External Customer [Line Items]
Revenue recognized		158.6	413.8	653.3	1,229.9
NGL [Member]
Revenue from External Customer [Line Items]
Revenue recognized		2,744.0	2,151.7	6,100.4	5,016.3
Condensate and Crude Oil [Member]
Revenue from External Customer [Line Items]
Revenue recognized		145.1	154.1	282.4	275.3
Gathering and Processing [Member]
Revenue from External Customer [Line Items]
Revenue recognized		385.7	317.4	791.5	632.8
Sales of Commodities [Member]
Revenue from External Customer [Line Items]
Non-customer revenue		(56.6)	195.0	(91.7)	418.2
Total revenues		2,991.1	2,914.6	6,944.4	6,939.7
NGL Transportation, Fractionation and Services [Member]
Revenue from External Customer [Line Items]
Revenue recognized		50.8	63.4	113.6	119.4
Storage Terminaling and Export [Member]
Revenue from External Customer [Line Items]
Revenue recognized		114.5	91.4	240.3	200.2
Other [Member]
Revenue from External Customer [Line Items]
Revenue recognized		19.9	16.9	34.6	32.1
Fees from Midstream Services [Member]
Revenue from External Customer [Line Items]
Revenue recognized		570.9	489.1	1,180.0	984.5
Total revenues		$ 570.9	$ 489.1	$ 1,180.0	$ 984.5
[1] Represents derivative activities that are not designated as hedging instruments under ASC 815.

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