Intangible Assets - Changes in Carrying Value of Intangible Assets (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Finite-lived Intangible Assets [Roll Forward]
Accumulated amortization, beginning of period	$ (923.6)
Customer relationships obtained from acquisition of business			$ 50.6
Accumulated amortization, end of period	(1,051.2)	$ (923.6)
EnLink Midstream Partners, LP
Finite-lived Intangible Assets [Roll Forward]
Customer relationships, end of period, net	793.6
Customer Relationships | EnLink Midstream Partners, LP
Finite-lived Intangible Assets [Roll Forward]
Customer relationships, beginning of period, gross	1,844.8	1,844.8	1,794.2
Accumulated amortization, beginning of period	(923.6)	(795.1)	(668.8)
Customer relationships, beginning of period, net	921.2	1,049.7	1,125.4
Amortization expense	(127.6)	(128.5)	(126.3)
Customer relationships, end of period, gross	1,844.8	1,844.8	1,844.8
Accumulated amortization, end of period	(1,051.2)	(923.6)	(795.1)
Customer relationships, end of period, net	$ 793.6	$ 921.2	$ 1,049.7