Certain Provisions of the Partnership Agreement - Narrative and Distributions (Details) $ / shares in Units, $ in Millions		1 Months Ended		3 Months Ended													12 Months Ended
	Jan. 25, 2019	Sep. 30, 2017 $ / shares shares	Jan. 31, 2016 $ / shares shares	Dec. 31, 2020 USD ($) shares	Sep. 30, 2020 USD ($) shares	Jun. 30, 2020 USD ($) shares	Mar. 31, 2020 USD ($) shares	Dec. 31, 2019 USD ($) shares	Sep. 30, 2019 USD ($) shares	Jun. 30, 2019 USD ($) shares	Mar. 31, 2019 USD ($) shares	Dec. 31, 2018 USD ($) $ / shares shares	Sep. 30, 2018 USD ($) $ / shares shares	Jun. 30, 2018 USD ($) $ / shares shares	Mar. 31, 2018 USD ($) $ / shares shares	Sep. 30, 2017 $ / shares	Dec. 31, 2020 USD ($) $ / shares	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($) shares
Partnership agreement
Proceeds from sale of common units | $																	$ 0.0	$ 0.0	$ 46.1
Common units conversion ratio	1.15
EnLink Midstream Partners, LP
Partnership agreement
Common units conversion ratio	1.15
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)												$ 0.390	$ 0.390	$ 0.390	$ 0.390
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)																	$ 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)																	$ 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)																	$ 0.375
Common Unit | EnLink Midstream Partners, LP | 2017 EDA
Partnership agreement
Partners' capital account, units, sold in private placement (in shares) | shares																			2,600,000
Proceeds from sale of common units | $																			$ 46.1
Commissions | $																			0.5
Series B Preferred Units
Partnership agreement
Common units conversion ratio			1
Series B Preferred Units | EnLink Midstream Partners, LP
Partnership agreement
Partners' capital account, units, sold in private placement (in shares) | shares			50,000,000
Shares issued, price per share (in dollars per share)			$ 15.00
Annual rate on issue price payable in cash																28.125%
Annual rate on issue price																0.25%	0.25%
Series C Preferred Units | EnLink Midstream Partners, LP
Partnership agreement
Shares issued, price per share (in dollars per share)		$ 1,000														$ 1,000
Partners' capital account, units, sold in public offering (in shares) | shares		400,000
Partners capital account, redemption price (in dollars per share)		$ 1,000
Partners' capital account, redemption period following review or appeal		120 days
Partners' capital account, redemption price following review or appeal		$ 1,020
Partners' capital account, dividend rate, percentage		6.00%
Distributions to preferred unitholders | $																	$ 24.0	$ 24.0	$ 24.0
LIBOR | Series C Preferred Units | EnLink Midstream Partners, LP
Partnership agreement
Partners' capital account, distributions, variable floating rate percentage		4.11%
Limited Partner | Series B Preferred Units
Partnership agreement
Partners' capital, conversion obligation period of consecutive trading days																	30 days
Partners' capital, average trading price, number of trading days																	2 days
Percent of issue price																	150.00%
Preferred units distributions (in shares) | shares				150,494	150,119	149,745	149,371	148,999	148,627	148,257	147,887	425,785	422,720	419,678	416,657
Proceeds from issuance of ENLK Preferred Units | $				$ 16.9	$ 16.9	$ 16.8	$ 16.8	$ 16.8	$ 17.1	$ 17.1	$ 16.7	$ 16.5	$ 16.4	$ 16.3	$ 16.2