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Equity and Distributions, Distributions (Details) (USD $)
3 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Distributions to Partners [Abstract]    
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] | First Quarter 2014 Distribution [Member]
   
Distributions to Partners [Abstract]    
Distribution Per Common Unit (in dollars per unit) $ 0.7100  
Record Date Apr. 30, 2014  
Payment Date May 07, 2014  
Cash Distribution [Member] | First Quarter 2013 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