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SUBSEQUENT EVENTS (Details) (USD $)
In Billions, except Share data in Millions, unless otherwise specified
12 Months Ended 0 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Mar. 04, 2014
Subsequent event
Feb. 06, 2014
Subsequent event
Dec. 31, 2013
Avoca Capital and its affiliates
Dec. 31, 2013
Avoca Capital and its affiliates
Subsequent event
Maximum
Subsequent Events              
Common unit distribution announced (in dollars per share) $ 1.40 $ 1.22 $ 0.74   $ 0.48    
Common unit distribution paid (in dollars per share)       $ 0.48      
Assets under management           $ 8.4  
Purchase price payable in common units             5.0