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Organization (Details)
$ in Millions
Dec. 16, 2013
USD ($)
item
Mar. 31, 2015
Jan. 26, 2015
Jan. 15, 2015
Jan. 01, 2015
Dec. 31, 2014
Harvest Holding [Member]            
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]            
Ownership interest in Harvest Holding held by noncontrolling interest owners   49.00%        
Number of closings of equity interest | item 2          
Aggregate cash purchase price $ 400.0          
Harvest Holding [Member] | First Closing [Member]            
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]            
Ownership interest in Harvest Holding held by noncontrolling interest owners 49.00%          
Harvest Holding [Member] | HNR Energia [Member]            
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]            
Ownership percentage   51.00%        
Harvest Holding [Member] | HNR Energia [Member] | First Closing [Member]            
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]            
Ownership interest held by Harvest Natural Resources before "Share Purchase Agreement" 80.00%          
Harvest Holding [Member] | Vinccler [Member]            
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]            
Ownership interest in Harvest Holding held by noncontrolling interest owners   20.00%        
Harvest Holding [Member] | Vinccler [Member] | First Closing [Member]            
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]            
Ownership interest in Harvest Holding held by noncontrolling interest owners 20.00%          
Harvest Holding [Member] | Petroandina [Member]            
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]            
Ownership interest in Harvest Holding held by noncontrolling interest owners   29.00% 29.00%   29.00%  
Harvest Holding [Member] | Petroandina [Member] | First Closing [Member]            
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]            
Ownership interest in Harvest Holding held by noncontrolling interest owners 29.00%          
Percent stake in subsidiary sold 29.00%          
Proceeds from sale of interest in investment affiliate, net $ 125.0          
Harvest Holding [Member] | Petroandina [Member] | Second Closing [Member]            
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]            
Percent stake in subsidiary sold 51.00%          
Proceeds from sale of interest in investment affiliate, net $ 275.0          
HNR Finance [Member]            
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]            
Indirect ownership percentage   100.00%        
Petrodelta [Member]            
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]            
Indirect ownership percentage   40.00%        
Petrodelta [Member] | Second Closing [Member]            
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]            
Ownership percentage       51.00%   51.00%
Petrodelta [Member] | HNR Energia [Member]            
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]            
Ownership percentage   20.40%        
Petrodelta [Member] | CVP And PDVSA Social S.A. [Member]            
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]            
Ownership percentage   60.00%   60.00%    
Harvest Vinccler S.C.A [Member]            
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]            
Indirect ownership percentage   100.00%