Employee Incentive Plans - Performance Unit Awards (Details)	Mar. 31, 2019
Below Threshold | Cash Flow Performance Unit [Member]
Incentive Plans [Line Items]
Vesting percentage of the Tranche TSR Units	0.00%
Achieved ENLC TSR Position Relative to Designated Peer Companies	143.00%
Below Threshold | Performance units
Incentive Plans [Line Items]
Vesting percentage of the Tranche TSR Units	0.00%
Achieved ENLC TSR Position Relative to Designated Peer Companies	25.00%
Threshold | Cash Flow Performance Unit [Member]
Incentive Plans [Line Items]
Vesting percentage of the Tranche TSR Units	50.00%
Achieved ENLC TSR Position Relative to Designated Peer Companies	143.00%
Threshold | Performance units
Incentive Plans [Line Items]
Vesting percentage of the Tranche TSR Units	50.00%
Achieved ENLC TSR Position Relative to Designated Peer Companies	25.00%
Target | Cash Flow Performance Unit [Member]
Incentive Plans [Line Items]
Vesting percentage of the Tranche TSR Units	100.00%
Achieved ENLC TSR Position Relative to Designated Peer Companies	155.00%
Target | Performance units
Incentive Plans [Line Items]
Vesting percentage of the Tranche TSR Units	100.00%
Achieved ENLC TSR Position Relative to Designated Peer Companies	50.00%
Maximum | Cash Flow Performance Unit [Member]
Incentive Plans [Line Items]
Vesting percentage of the Tranche TSR Units	200.00%
Achieved ENLC TSR Position Relative to Designated Peer Companies	172.00%
Maximum | Performance units
Incentive Plans [Line Items]
Vesting percentage of the Tranche TSR Units	200.00%
Achieved ENLC TSR Position Relative to Designated Peer Companies	75.00%