Asset Retirement Obligations (Details) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
EnLink Midstream Partners, LP
Asset Retirement Obligation, Roll Forward Analysis [Roll Forward]
Balance, beginning of period	$ 13,500,000	$ 14,000,000
Revisions to the fair values of existing liabilities	0	(500,000)
Accretion expense	700,000	600,000
Liabilities settled	0	(600,000)
Balance, end of period	14,200,000	13,500,000
Other Noncurrent Liabilities
Asset Retirement Obligation, Roll Forward Analysis [Roll Forward]
Balance, beginning of period	13,500,000
Balance, end of period	$ 14,200,000	13,500,000
Other Current Liabilities
Asset Retirement Obligation, Roll Forward Analysis [Roll Forward]
Asset retirement obligation		$ 0