Certain Provisions of the Partnership Agreement - Narrative and Distributions (Details) $ / shares in Units, $ in Millions				1 Months Ended			3 Months Ended												12 Months Ended
	May 13, 2016	Oct. 29, 2015 USD ($) $ / shares shares	Mar. 07, 2014 shares	Sep. 30, 2017 USD ($) $ / shares shares	Jan. 31, 2016 USD ($) $ / shares shares	Mar. 31, 2015 shares	Dec. 31, 2017 USD ($) $ / shares shares	Sep. 30, 2017 USD ($) $ / shares shares	Jun. 30, 2017 USD ($) $ / shares shares	Mar. 31, 2017 USD ($) $ / shares shares	Dec. 31, 2016 USD ($) $ / shares shares	Sep. 30, 2016 USD ($) $ / shares shares	Jun. 30, 2016 USD ($) $ / shares shares	Mar. 31, 2016 USD ($) $ / shares shares	Dec. 31, 2015 $ / shares shares	Sep. 30, 2015 $ / shares shares	Jun. 30, 2015 $ / shares shares	Mar. 31, 2015 $ / shares shares	Dec. 31, 2017 USD ($) $ / shares shares	Dec. 31, 2016 USD ($) shares	Dec. 31, 2015 USD ($) shares	Aug. 31, 2017 USD ($)	Nov. 30, 2014 USD ($)
Partnership agreement
Proceeds from sale of common units																			$ 106.9	$ 167.5	$ 24.4
EnLink Midstream Partners, LP
Partnership agreement
Percentage of available cash to distribute							100.00%												100.00%
Period after quarter for distribution																			45 days
Distribution made to limited partner, distributions paid, per unit (in dollars per share) | $ / shares							$ 0.390	$ 0.390	$ 0.390	$ 0.390	$ 0.390	$ 0.390	$ 0.390	$ 0.390	$ 0.390	$ 0.390	$ 0.385	$ 0.380
EnLink Midstream Partners, LP | General Partner | Incentive Distribution Level 1
Partnership agreement
Incentive distribution for general partner																			13.00%
Incentive distribution, distribution per unit (in dollars per share) | $ / shares																			$ 0.25
EnLink Midstream Partners, LP | General Partner | Incentive Distribution Level 2
Partnership agreement
Incentive distribution for general partner																			23.00%
Incentive distribution, distribution per unit (in dollars per share) | $ / shares																			$ 0.3125
EnLink Midstream Partners, LP | General Partner | Incentive Distribution Level 3
Partnership agreement
Incentive distribution for general partner																			48.00%
Incentive distribution, distribution per unit (in dollars per share) | $ / shares																			$ 0.375
Common Unit
Partnership agreement
Equity interest issued or issuable, number of shares (in shares) | shares			115,495,669
Common Unit | EnLink Midstream Partners, LP | 2014 EDA
Partnership agreement
Agreement for gross sales of common units (up to)																							$ 350.0
Partners' capital account, units, sold in private placement (in shares) | shares																				10,000,000	1,300,000
Proceeds from sale of common units																				$ 167.5	$ 24.4
Commissions																				1.7	0.3
Common Unit | EnLink Midstream Partners, LP | 2017 EDA
Partnership agreement
Agreement for gross sales of common units (up to)																						$ 600.0
Partners' capital account, units, sold in private placement (in shares) | shares																			6,200,000
Proceeds from sale of common units																			$ 106.9
Commissions																			1.1
Registration fees																			0.2
Amount of equity security remaining under equity distribution agreement							$ 565.4												565.4
Class C Common Unit | EnLink Midstream Partners, LP
Partnership agreement
Partners' capital account, units, sale of units (in shares) | shares						6,704,285
Distribution made to limited partner, unit distribution | shares														233,107	209,044	150,732	120,622	99,794
Partners capital, common units conversion ratio	1
Series B Preferred Units
Partnership agreement
Proceeds from issuance of ENLK Preferred Units																			0.0	724.1	0.0
Series B Preferred Units | EnLink Midstream Partners, LP
Partnership agreement
Partners' capital account, units, sold in private placement (in shares) | shares					50,000,000
Proceeds from sale of common units					$ 724.1
Shares issued, price per share (in dollars per share) | $ / shares					$ 15.00
Partners capital, common units conversion ratio					1
Partners' capital, conversion obligation period of consecutive trading days					30 days
Partners' capital, average trading price, number of trading days					2 days
Conversion VWAP Percentage					150.00%
Percent of issue price					140.00%
Annual rate on issue price payable in kind					8.50%
Annual rate on issue price payable in cash					7.50%
Annual rate on issue price					0.25%
Series C Preferred Units
Partnership agreement
Proceeds from issuance of ENLK Preferred Units																			394.0	$ 0.0	$ 0.0
Series C Preferred Units | EnLink Midstream Partners, LP
Partnership agreement
Proceeds from sale of common units				$ 394.0
Shares issued, price per share (in dollars per share) | $ / shares				$ 1,000				$ 1,000
Partners' capital account, units, sold in public offering (in shares) | shares				400,000
Partners capital account, redemption price | $ / shares				$ 1,000
Partners' capital account, redemption period following review or appeal				120 days
Partners' capital account, redemption price following review or appeal | $ / shares				$ 1,020
Partners' capital account, dividend rate, percentage				6.00%
Distributions to preferred unitholders																			$ 5.6
LIBOR | Series C Preferred Units | EnLink Midstream Partners, LP
Partnership agreement
Partners' capital account, distributions, variable floating rate percentage				4.11%
Limited Partner | Common Unit
Partnership agreement
Partners' capital account, units, sold in private placement (in shares) | shares		2,849,100
Proceeds from sale of common units		$ 50.0
Shares issued, price per share (in dollars per share) | $ / shares		$ 17.55
Limited Partner | Series B Preferred Units
Partnership agreement
Preferred units distributions | shares							413,658	410,681	1,178,672	1,154,147	1,130,131	1,106,616	1,083,589	992,445
Proceeds from issuance of ENLK Preferred Units							$ 16.1	$ 15.9	$ 0.0	$ 0.0	$ 0.0	$ 0.0	$ 0.0	$ 0.0
EnLink Midstream Partners GP, LLC | Acacia
Partnership agreement
Equity interest issued or issuable, number of shares (in shares) | shares																					68,200,000
EnLink Midstream Holdings, LP | ENLC
Partnership agreement
Acquired voting interest															50.00%						50.00%