Employee Incentive Plan (Tables)

9 Months Ended

Sep. 30, 2014

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

ScheduleofShareBasedCompensationRestrictedStockandRestrictedStockUnitsVestedandFairValueVested [Table Text Block]

A summary of the restricted incentive units’ aggregate intrinsic value (market value at vesting date) and fair value of units vested during the three and nine months ended September 30, 2014 are provided below (in millions):

	Three Months Ended September 30,		Nine Months Ended  September 30,
EnLink Midstream Partners, LP Restricted Incentive Units:	2014		2014
Aggregate intrinsic value of units vested	$	1.2	$	1.2
Fair value of units vested	$	1.2	$	1.2

A summary of the restricted incentive units’ aggregate intrinsic value (market value at vesting date) and fair value of units vested during the three and nine months ended September 30, 2014 are provided below (in millions):

	Three Months Ended September 30,		Nine Months Ended  September 30,
EnLink Midstream, LLC Restricted Incentive Units:	2014		2014
Aggregate intrinsic value of units vested	$	2.4	$	2.4
Fair value of units vested	$	2.2	$	2.2

Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs

Amounts recognized in the condensed consolidated financial statements with respect to these plans are as follows (in millions):

	Three Months Ended  September 30,				Nine Months Ended   September 30,
	2014		2013		2014		2013
Cost of unit-based compensation allocated to Predecessor general and administrative expense (1)	$	—	$	3.5	$	2.8	$	10.1
Cost of unit-based compensation charged to general and administrative expense	5.0		—		11.0		—
Cost of unit-based compensation charged to operating expense	0.8		—		1.8		—
Total amount charged to income	$	5.8	$	3.5	$	15.6	$	10.1
Interest of non-controlling partners in unit-based compensation	$	2.5	$	—	$	5.4	$	—
Amount of related income tax expense recognized in income	$	1.3	$	1.3	$	3.9	$	3.8

Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity

A summary of the restricted incentive unit activity for the nine months ended September 30, 2014 is provided below:

	Nine Months Ended   September 30, 2014
EnLink Midstream Partners, LP Restricted Incentive Units:	Number of Units			Weighted Average Grant-Date  Fair Value
Non-vested, beginning of period	—			$	—
Assumed in business combination	371,225			30.51
Granted	701,119			31.65
Vested*	(39,833		)	30.63
Forfeited	(13,196		)	31.83
Non-vested, end of period	1,019,315			$	31.27
Aggregate intrinsic value, end of period (in millions)	$	31.0

A summary of the restricted incentive units activities for the nine months endedSeptember 30, 2014 is provided below:

	Nine Months Ended   September 30, 2014
EnLink Midstream, LLC Restricted Incentive Units	Number of Units			Weighted Average Grant-Date Fair Value
Non-vested, beginning of period	—			$	—
Assumed in business combination	435,674			37.60
Granted	626,341			36.59
Vested*	(59,553		)	37.56
Forfeited	(11,859		)	36.54
Non-vested, end of period	990,603			$	36.97
Aggregate intrinsic value, end of period (in millions)	$	40.9