Equity-Based Compensation (Tables) (Phantom Units [Member])

3 Months Ended

Mar. 31, 2012

Phantom Units [Member]

Phantom Units Activity

The following table presents phantom units activity for the three months ended March 31, 2012:

Phantom Units	Units		Weighted Average Grant Date Fair Value
Outstanding at beginning of period	1,086,393		$	24.51
Service condition grants	4,000		26.24
Vested service condition	(13,039	)	20.65
Forfeited service condition	(15,950	)	24.81
Outstanding at end of period	1,061,404		24.56