Condensed Consolidated Balance Sheets (Parenthetical)	Jun. 30, 2014	Dec. 31, 2013
Common Units
Units issued	190,051,818	177,801,147
Units outstanding	190,051,818	177,801,147
Class B Units
Units issued	12,680,044	12,424,358
Units outstanding	12,680,044	12,424,358
Class C Units
Units issued	0	11,199,268
Units outstanding	0	11,199,268