Equity-Based Compensation (Tables)

6 Months Ended

Jun. 30, 2017

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

Disclosure of Share-based Compensation Arrangements by Share-based Payment Award [Table Text Block]

A summary of our unit award activity for the six months ended June 30, 2017, is set forth below:

	Number of Phantom Units		Weighted-Average Grant Date Fair Value
Not vested at December 31, 2016	285,155		$	26.42
Awards granted	52,654		24.70
Awards vested (1)	(193,499	)	26.52
Awards forfeited	—		—
Not vested at June 30, 2017	144,310		25.65

(1) Upon completion of the Andeavor Acquisition on June 1, 2017, 107,487 phantom units vested upon Western's change in control.