General (Details) $ in Millions			3 Months Ended
	Jan. 31, 2019 shares	Jan. 25, 2019 shares	Mar. 31, 2019 USD ($)	Mar. 31, 2018 USD ($)
Related Party Transaction [Line Items]
Business acquisition, equity interest issued or issuable, number of shares (in shares) | shares		304,822,035
Common units conversion ratio		1.15
Goodwill, impairment loss | $			$ 186.5
Issuance of common units for ENLK public common units related to the Merger | $			$ 399.0	$ 0.9
EnLink Midstream Partners, LP
Related Party Transaction [Line Items]
Business acquisition, equity interest issued or issuable, number of shares (in shares) | shares	55,827,221
Common units conversion ratio			1.15
EnLink Oklahoma T.O.
Related Party Transaction [Line Items]
Noncontrolling interest, ownership percentage by parent	16.10%