v3.26.1
Long-Term Obligations - Revolving Credit Facilities Narrative (Details) - USD ($)
$ in Millions
6 Months Ended
Apr. 09, 2026
Mar. 26, 2026
Jun. 30, 2026
Jun. 30, 2025
Apr. 08, 2026
Debt Instrument [Line Items]          
Loss on extinguishment of debt     $ 23.5 $ 0.0  
Revolving Credit Facility | Line of Credit | Base Rate | Minimum          
Debt Instrument [Line Items]          
Debt instrument, basis spread on variable rate (percentage)     0.00%    
Revolving Credit Facility | Line of Credit | Base Rate | Maximum          
Debt Instrument [Line Items]          
Debt instrument, basis spread on variable rate (percentage)     0.50%    
Revolving Credit Facility | Delek Revolving Credit Facility | Line of Credit          
Debt Instrument [Line Items]          
Line of credit facility, maximum borrowing capacity $ 1,250.0   $ 1,250.0   $ 1,100.0
Debt instrument, amendment, extended maturity, number of days prior to maturity of term loan credit facility 90 days        
Debt instrument, amendment, extended maturity, maximum outstanding principal $ 500.0        
Debt instrument, amendment, reduction in basis spread on variable rate 0.25%        
Line of credit facility, increase in available maximum borrowing capacity $ 750.0        
Line of credit facility, increase in available maximum borrowing capacity, as a percentage of EBITDA 1.00%        
Revolving Credit Facility | Delek Logistics Revolving Facility | Line of Credit          
Debt Instrument [Line Items]          
Line of credit facility, maximum borrowing capacity     1,300.0    
Revolving Credit Facility | Delek Logistics Revolving Facility | Line of Credit | Delek Logistics          
Debt Instrument [Line Items]          
Line of credit facility, maximum borrowing capacity   $ 1,300.0      
Debt issuance costs   10.2      
Loss on extinguishment of debt   $ 1.6      
Debt instrument, amendment, extended maturity, number of days prior to maturity of notes   180 days      
Debt instrument, amendment, extended maturity, minimum outstanding principal   $ 500.0      
Debt instrument, basis spread on variable rate (percentage)   1.00%      
Debt instrument, interest rate floor   0.00%      
Revolving Credit Facility | Delek Logistics Revolving Facility | Line of Credit | Fed Funds Effective Rate Overnight Index Swap Rate | Delek Logistics          
Debt Instrument [Line Items]          
Debt instrument, basis spread on variable rate (percentage)   0.50%      
Revolving Credit Facility | Delek Logistics Revolving Facility | Line of Credit | Secured Overnight Financing Rate (SOFR) | Delek Logistics          
Debt Instrument [Line Items]          
Debt instrument, basis spread on variable rate (percentage)   1.00%      
Revolving Credit Facility | Delek Logistics Revolving Facility | Line of Credit | Base Rate | Minimum | Delek Logistics          
Debt Instrument [Line Items]          
Debt instrument, basis spread on variable rate (percentage)   0.50%      
Revolving Credit Facility | Delek Logistics Revolving Facility | Line of Credit | Base Rate | Maximum | Delek Logistics          
Debt Instrument [Line Items]          
Debt instrument, basis spread on variable rate (percentage)   1.00%      
Revolving Credit Facility | Delek Logistics Revolving Facility | Line of Credit | Term SOFR Based Tranche Rate | Minimum | Delek Logistics          
Debt Instrument [Line Items]          
Debt instrument, basis spread on variable rate (percentage)   1.50%      
Revolving Credit Facility | Delek Logistics Revolving Facility | Line of Credit | Term SOFR Based Tranche Rate | Maximum | Delek Logistics          
Debt Instrument [Line Items]          
Debt instrument, basis spread on variable rate (percentage)   2.50%      
Letter of Credit | Delek Logistics Revolving Facility | Line of Credit          
Debt Instrument [Line Items]          
Line of credit facility, maximum borrowing capacity     150.0    
Letter of Credit | Delek Logistics Revolving Facility | Line of Credit | Delek Logistics          
Debt Instrument [Line Items]          
Line of credit facility, maximum borrowing capacity   $ 150.0      
US Swing Line Sublimit | Delek Logistics Revolving Facility | Line of Credit          
Debt Instrument [Line Items]          
Line of credit facility, maximum borrowing capacity     $ 50.0    
US Swing Line Sublimit | Delek Logistics Revolving Facility | Line of Credit | Delek Logistics          
Debt Instrument [Line Items]          
Line of credit facility, maximum borrowing capacity   $ 50.0