Derivatives - Commodity Swaps Additional Information (Details) - EnLink Midstream Partners, LP gal in Millions, MMBbls in Millions, MMBTU in Millions, $ in Millions	6 Months Ended
	Jun. 30, 2021 USD ($) MMBTU gal MMBbls	Dec. 31, 2020 USD ($)
Derivatives
Net Fair Value	$ (33.8)	$ (2.1)
Commodity
Derivatives
Net Fair Value	(33.8)
Maximum loss if counterparties fail to perform	71.1
Possible reduction in maximum loss if counterparties fail to perform	$ 0.0
Commodity | NGL | Short
Derivatives
Notional amount (in gallons and mmbls) | gal	204.2
Net Fair Value	$ (49.6)
Commodity | NGL | Long
Derivatives
Notional amount (in gallons and mmbls) | gal	17.0
Net Fair Value	$ 1.5
Commodity | Natural Gas | Short
Derivatives
Notional amount (in mmbtu) | MMBTU	13.0
Net Fair Value	$ (6.6)
Commodity | Natural Gas | Long
Derivatives
Notional amount (in mmbtu) | MMBTU	12.0
Net Fair Value	$ 4.5
Commodity | Crude and condensate | Short
Derivatives
Notional amount (in gallons and mmbls) | MMBbls	8.5
Net Fair Value	$ (41.5)
Commodity | Crude and condensate | Long
Derivatives
Notional amount (in gallons and mmbls) | MMBbls	3.9
Net Fair Value	$ 57.9