Segment Information - Summary of Consolidated Revenues Disaggregated by Product and Service (Details) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2025	Mar. 31, 2024
Revenue from External Customer [Line Items]
Total revenues		$ 4,561.5	$ 4,562.4
Derivative Activities - Hedge [Member]
Revenue from External Customer [Line Items]
Non-customer revenue		(6.1)	(3.2)
Derivative Activities - Non-hedge [Member]
Revenue from External Customer [Line Items]
Non-customer revenue	[1]	(285.2)	(31.9)
Natural Gas [Member]
Revenue from External Customer [Line Items]
Revenue recognized		681.9	494.6
NGL [Member]
Revenue from External Customer [Line Items]
Revenue recognized		3,376.8	3,345.7
Condensate and Crude Oil [Member]
Revenue from External Customer [Line Items]
Revenue recognized		117.0	137.2
Gathering and Processing [Member]
Revenue from External Customer [Line Items]
Revenue recognized		469.0	405.9
Sales of Commodities [Member]
Revenue from External Customer [Line Items]
Revenue recognized		4,175.7	3,977.5
Non-customer revenue		(291.3)	(35.1)
Total revenues		3,884.4	3,942.4
NGL Transportation, Fractionation and Services [Member]
Revenue from External Customer [Line Items]
Revenue recognized		76.8	73.6
Storage Terminaling and Export [Member]
Revenue from External Customer [Line Items]
Revenue recognized		131.8	125.7
Other [Member]
Revenue from External Customer [Line Items]
Revenue recognized		(0.5)	14.8
Fees from Midstream Services [Member]
Revenue from External Customer [Line Items]
Revenue recognized		677.1	620.0
Total revenues		$ 677.1	$ 620.0

[1] Represents derivative activities that are not designated as hedging instruments under ASC 815.