Derivatives - Commodity Swaps Additional Information (Details) - EnLink Midstream Partners, LP gal in Millions, MMBbls in Millions, MMBTU in Millions	9 Months Ended
	Sep. 30, 2021 USD ($) MMBTU gal MMBbls	Dec. 31, 2020 USD ($)
Derivatives
Net Fair Value	$ (35,000,000.0)	$ (2,100,000)
Commodity
Derivatives
Net Fair Value	(35,000,000.0)
Maximum loss if counterparties fail to perform	77,500,000
Possible reduction in maximum loss if counterparties fail to perform	$ 0
Commodity | NGL | Short
Derivatives
Notional amount (in gallons and mmbls) | gal	169.3
Net Fair Value	$ (56,300,000)
Commodity | NGL | Long
Derivatives
Notional amount (in gallons and mmbls) | gal	7.8
Net Fair Value	$ 1,400,000
Commodity | Natural Gas | Short
Derivatives
Notional amount (in mmbtu) | MMBTU	9.8
Net Fair Value	$ (17,600,000)
Commodity | Natural Gas | Long
Derivatives
Notional amount (in mmbtu) | MMBTU	14.2
Net Fair Value	$ 25,000,000.0
Commodity | Crude and condensate | Short
Derivatives
Notional amount (in gallons and mmbls) | MMBbls	7.8
Net Fair Value	$ (32,700,000)
Commodity | Crude and condensate | Long
Derivatives
Notional amount (in gallons and mmbls) | MMBbls	3.8
Net Fair Value	$ 45,200,000