Segment Information - Reconciliation of Reportable Segment Operating Margin to Income (Loss) Before Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Reconciliation of reportable segment operating margin to income (loss) before income taxes:
Depreciation and amortization expense	$ (367.6)	$ (340.5)
General and administrative expense	(94.5)	(86.5)
Other operating income (expense)	5.3	0.0
Interest expense, net	(197.1)	(228.6)
Equity earnings (loss)	5.5	2.8
Other, net	0.3	1.7
Income (loss) before income taxes	352.0	415.3
Total Reportable Segments Operating Margin [Member]
Reconciliation of reportable segment operating margin to income (loss) before income taxes:
Operating margin	1,248.9	1,088.5
Gathering and Processing [Member]
Reconciliation of reportable segment operating margin to income (loss) before income taxes:
Operating margin	602.2	556.4
Logistics and Transportation [Member]
Reconciliation of reportable segment operating margin to income (loss) before income taxes:
Operating margin	646.7	532.1
Other [Member]
Reconciliation of reportable segment operating margin to income (loss) before income taxes:
Operating margin	$ (248.8)	$ (22.1)