Equity and Distributions, Distributions (Details) (USD $)	3 Months Ended
	Mar. 31, 2013
Distributions to Partners [Abstract]
Number of Designated Units (in units)	23,700,000
Number of Designated Units to be excluded from distributions during 2014	22,560,000
Number of Designated Units to be excluded from distributions during 2015	17,690,000
Cash Distribution [Member]
Distributions to Partners [Abstract]
Distribution Per Common Unit (in dollars per unit)	0.6700
Record Date	Apr. 30, 2013
Payment Date	May 07, 2013