v3.25.3
Partners' Capital, Mezzanine Capital and Distributions (Narrative) (Details)
3 Months Ended 9 Months Ended 34 Months Ended
Aug. 14, 2025
USD ($)
$ / shares
May 15, 2025
USD ($)
$ / shares
Mar. 06, 2025
USD ($)
$ / shares
shares
Feb. 14, 2025
USD ($)
$ / shares
Nov. 14, 2024
USD ($)
$ / shares
Aug. 14, 2024
USD ($)
$ / shares
May 15, 2024
USD ($)
$ / shares
Sep. 30, 2025
USD ($)
shares
Sep. 30, 2024
USD ($)
Sep. 30, 2025
USD ($)
shares
Sep. 30, 2024
USD ($)
Sep. 30, 2025
shares
Dec. 31, 2024
shares
Aug. 08, 2023
shares
Partners Capital And Distributions [Line Items]                            
Common units outstanding (in units)               122,464,318   122,464,318   122,464,318 122,464,318  
Less: Accumulated distributions and returns attributable to Class A Convertible Preferred Units | $               $ (14,868,000) $ (21,894,000) $ (58,138,000) $ (65,682,000)      
Affiliated Entity | Cameron Highway Oil Pipeline                            
Partners Capital And Distributions [Line Items]                            
Percentage of ownership after transaction                       64.00%    
Affiliated Entity | Independence Hub, LLC | Genesis Energy, LLC                            
Partners Capital And Distributions [Line Items]                            
Noncontrolling Interest, Ownership Percentage by Parent               80.00%   80.00%   80.00%    
Class A Common Units | 2023 Repurchase Program                            
Partners Capital And Distributions [Line Items]                            
Percentage of shares authorized for repurchase                           0.10
Shares authorized to be repurchased (in shares)                           12,253,922
Stock repurchased and cancelled (in shares)                   114,900        
Class A Convertible Preferred Stock Units                            
Partners Capital And Distributions [Line Items]                            
Class A Convertible Preferred Units redeemed (in shares)     7,416,196                      
Class A Convertible Preferred units redeemed (in dollars per share) | $ / shares     $ 35.40                      
Less: Accumulated distributions and returns attributable to Class A Convertible Preferred Units | $               $ 14,900,000 $ 21,900,000 $ 56,700,000 $ 65,700,000      
Temporary equity, adjustment | $                   $ 1,400,000        
Class A Convertible Preferred Stock Units | Preferred Unitholders                            
Partners Capital And Distributions [Line Items]                            
Total Amount | $ $ 14,868,000 $ 19,942,000 $ 5,100,000 $ 21,894,000 $ 21,894,000 $ 21,894,000 $ 21,894,000              
Partners' Capital Account, Distribution Per Unit of Limited Partner Interest | $ / shares $ 0.9473 $ 0.9473 $ 0.6841 $ 0.9473 $ 0.9473 $ 0.9473 $ 0.9473              
Limited Partner [Member] | Class A Common Units                            
Partners Capital And Distributions [Line Items]                            
Common units outstanding (in units)               122,424,321   122,424,321   122,424,321    
Limited Partner [Member] | Class B Common Units                            
Partners Capital And Distributions [Line Items]                            
Common units outstanding (in units)               39,997   39,997   39,997    
Limited Partner [Member] | Preferred Class A                            
Partners Capital And Distributions [Line Items]                            
Common units outstanding (in units)               15,695,722   15,695,722   15,695,722