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Segment Information - Summary of Consolidated Revenues Disaggregated by Product and Service (Details) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Revenue from External Customer [Line Items]
Revenues, Total		$ 3,851.8	$ 3,896.6	$ 11,976.2	$ 11,820.8
Derivative Activities - Hedge [Member]
Revenue from External Customer [Line Items]
Non-customer revenue		30.2	22.2	59.3	117.2
Derivative Activities - Non-hedge [Member]
Revenue from External Customer [Line Items]
Non-customer revenue	[1]	(64.3)	(7.0)	(185.0)	316.2
Natural Gas [Member]
Revenue from External Customer [Line Items]
Revenue recognized		168.4	606.0	821.7	1,835.9
NGL [Member]
Revenue from External Customer [Line Items]
Revenue recognized		2,959.5	2,635.4	9,024.7	7,651.6
Condensate and Crude Oil [Member]
Revenue from External Customer [Line Items]
Revenue recognized		123.2	117.7	405.5	393.1
Gathering and Processing [Member]
Revenue from External Customer [Line Items]
Revenue recognized		426.4	333.3	1,218.0	966.3
Sales of Commodities [Member]
Revenue from External Customer [Line Items]
Revenue recognized		3,251.1	3,359.1	10,251.9	9,880.6
Non-customer revenue		(34.1)	15.2	(125.7)	433.4
Revenues, Total		3,217.0	3,374.3	10,126.2	10,314.0
NGL Transportation, Fractionation and Services [Member]
Revenue from External Customer [Line Items]
Revenue recognized		72.8	71.1	221.5	190.5
Storage Terminaling and Export [Member]
Revenue from External Customer [Line Items]
Revenue recognized		122.0	102.2	362.3	302.3
Other [Member]
Revenue from External Customer [Line Items]
Revenue recognized		13.6	15.7	48.2	47.7
Fees from Midstream Services [Member]
Revenue from External Customer [Line Items]
Revenue recognized		634.8	522.3	1,850.0	1,506.8
Revenues, Total		$ 634.8	$ 522.3	$ 1,850.0	$ 1,506.8
[1] Represents derivative activities that are not designated as hedging instruments under ASC 815.

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