v3.26.1
Debt (Narrative) (Details)
3 Months Ended 6 Months Ended
Jun. 30, 2026
USD ($)
Mar. 04, 2026
USD ($)
yr
segment
Apr. 03, 2025
USD ($)
Jun. 30, 2026
USD ($)
Jun. 30, 2025
USD ($)
Jun. 30, 2026
USD ($)
Jun. 30, 2025
USD ($)
Dec. 31, 2025
USD ($)
Debt Instrument [Line Items]                
Outstanding borrowings $ 99,500,000     $ 99,500,000   $ 99,500,000   $ 0
Restricted cash 4,975,000     4,975,000   4,975,000   0
Number of additional years | yr   1,000            
Number of occasions, option to extend | segment   2,000            
Net Value 3,104,316,000     3,104,316,000   3,104,316,000   3,046,815,000
SENIOR UNSECURED NOTES, net of debt issuance costs and discount 3,200,000,000     3,200,000,000   3,200,000,000   3,100,000,000
Proceeds from issuance of senior unsecured notes (Note 10)           750,000,000 $ 0  
Repayment of senior unsecured notes           679,933,000 414,370,000  
Loss on extinguishment of debt       30,000 $ 8,935,000 $ 3,570,000 $ 9,779,000  
Senior Notes | Guarantor Subsidiary | Genesis Energy, LLC | Genesis Finance Corporation                
Debt Instrument [Line Items]                
Percentage of equity interest           100.00%    
Senior Secured Credit Facility | Credit Facility                
Debt Instrument [Line Items]                
Maximum senior secured leverage ratio   2.50            
Senior Secured Credit Facility | Credit Facility | Debt Instrument, Redemption, Period One                
Debt Instrument [Line Items]                
Maximum consolidated leverage ratio   5.75            
Minimum interest coverage ratio   2.00            
Senior Secured Credit Facility | Credit Facility | Debt Instrument, Redemption, Period Two                
Debt Instrument [Line Items]                
Maximum consolidated leverage ratio   5.50            
Minimum interest coverage ratio   2.15            
Senior Secured Credit Facility | Credit Facility | Debt Instrument, Redemption, Period Three                
Debt Instrument [Line Items]                
Minimum interest coverage ratio   2.25            
7.750% senior unsecured notes due 2028                
Debt Instrument [Line Items]                
Loss on extinguishment of debt           $ 3,400,000    
7.750% senior unsecured notes due 2028 | Senior Notes                
Debt Instrument [Line Items]                
Net Value $ 0 $ 150,000,000   $ 0   $ 0   676,237,000
Interest rate 7.75% 8.875%   7.75%   7.75%    
7.750% senior unsecured notes due 2028 | Unsecured Debt                
Debt Instrument [Line Items]                
Interest rate   7.75%            
Repayment of senior unsecured notes   $ 416,100,000            
Extinguishment of debt   $ 263,300,000            
2034 Notes | Unsecured Debt                
Debt Instrument [Line Items]                
Interest rate   6.75%            
Debt Instrument, Face Amount   $ 750,000,000.0            
Proceeds from issuance of senior unsecured notes (Note 10)   735,900,000            
Accounts receivable securitization credit facility | Credit Facility                
Debt Instrument [Line Items]                
Credit facility limit $ 99,500,000     $ 99,500,000   $ 99,500,000    
Basis spread on variable rate           1.375%    
Unused capacity commitment fee percentage           0.35%    
Outstanding borrowings $ 99,500,000     $ 99,500,000   $ 99,500,000   0
Required capital balance, percentage of credit facility limit 5.00%     5.00%   5.00%    
8.000% senior unsecured notes due 2033 | Senior Notes                
Debt Instrument [Line Items]                
Net Value $ 591,123,000     $ 591,123,000   $ 591,123,000   590,477,000
Interest rate 8.00%   8.00% 8.00%   8.00%    
Repayment of senior unsecured notes     $ 406,200,000          
Loss on extinguishment of debt     $ 8,900,000          
Revolving Credit Facility | Revolving Loan | Credit Facility                
Debt Instrument [Line Items]                
Credit facility limit   $ 900,000,000            
Unused capacity commitment fee percentage 0.50%              
Net Value $ 0     $ 0   $ 0   $ 6,400,000
Credit facility, additional borrowing capacity 1,300,000,000     1,300,000,000   1,300,000,000    
Letters of credit, outstanding amount 5,600,000     5,600,000   5,600,000    
Remaining borrowing capacity 894,400,000     894,400,000   894,400,000    
Revolving Credit Facility | Revolving Loan | Credit Facility | Petroleum Products                
Debt Instrument [Line Items]                
Credit facility, amount borrowed 17,100,000     17,100,000   $ 17,100,000    
Revolving Credit Facility | Revolving Loan | Credit Facility | Maximum                
Debt Instrument [Line Items]                
Unused capacity commitment fee percentage           0.50%    
Letters of credit, outstanding amount $ 50,000,000     50,000,000   $ 50,000,000    
Revolving Credit Facility | Revolving Loan | Credit Facility | Minimum                
Debt Instrument [Line Items]                
Unused capacity commitment fee percentage           0.30%    
Revolving Credit Facility | Revolving Loan | Credit Facility | Federal Funds Effective Rate                
Debt Instrument [Line Items]                
Basis spread on variable rate           0.50%    
Revolving Credit Facility | Revolving Loan | Credit Facility | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate                
Debt Instrument [Line Items]                
Basis spread on variable rate 350.00%              
Revolving Credit Facility | Revolving Loan | Credit Facility | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate | Maximum                
Debt Instrument [Line Items]                
Basis spread on variable rate           3.50%    
Revolving Credit Facility | Revolving Loan | Credit Facility | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate | Minimum                
Debt Instrument [Line Items]                
Basis spread on variable rate           2.25%    
Revolving Credit Facility | Revolving Loan | Credit Facility | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate | One-month Tenor | Maximum                
Debt Instrument [Line Items]                
Basis spread on variable rate           1.00%    
Revolving Credit Facility | Revolving Loan | Credit Facility | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate | Term SOFR Adjustment | Maximum                
Debt Instrument [Line Items]                
Basis spread on variable rate           0.10%    
Revolving Credit Facility | Revolving Loan | Credit Facility | Alternate Base Rate                
Debt Instrument [Line Items]                
Basis spread on variable rate 2.50%              
Revolving Credit Facility | Revolving Loan | Credit Facility | Alternate Base Rate | Maximum                
Debt Instrument [Line Items]                
Basis spread on variable rate           2.50%    
Revolving Credit Facility | Revolving Loan | Credit Facility | Alternate Base Rate | Minimum                
Debt Instrument [Line Items]                
Basis spread on variable rate           1.25%    
Revolving Credit Facility | Senior Secured Credit Facility | Credit Facility                
Debt Instrument [Line Items]                
Letter of credit, fee percentage 3.50%              
Revolving Credit Facility | Senior Secured Credit Facility | Credit Facility | Maximum                
Debt Instrument [Line Items]                
Letter of credit, fee percentage           3.50%    
Revolving Credit Facility | Senior Secured Credit Facility | Credit Facility | Minimum                
Debt Instrument [Line Items]                
Letter of credit, fee percentage           2.25%    
Bridge Loan | Revolving Loan | Credit Facility | Petroleum Products                
Debt Instrument [Line Items]                
Credit facility limit $ 200,000,000     $ 200,000,000   $ 200,000,000