CONSOLIDATED BALANCE SHEETS (Parenthetical information)	Dec. 31, 2013	Dec. 31, 2012
Limited Partners' Capital Account, Units Outstanding	443,428,695	373,188,163
Common Units [Member]
Limited Partners' Capital Account, Units Issued	312,791,561	252,756,425
Limited Partners' Capital Account, Units Outstanding	312,791,561	252,756,425
Class B Units [Member]
Limited Partners' Capital Account, Units Issued	5,313,400	5,313,400
Limited Partners' Capital Account, Units Outstanding	5,313,400	5,313,400
i-units [Member]
Limited Partners' Capital Account, Units Issued	125,323,734	115,118,338
Limited Partners' Capital Account, Units Outstanding	125,323,734	115,118,338