v3.25.4
DEFERRED CHARGES AND OTHER ASSETS, NET (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Indefinite-Lived Intangible Assets [Line Items]      
Deferred turnaround costs, net $ 1,131.7 $ 1,086.6  
Catalyst, net [1] 232.9 191.1  
Environmental credits 42.5 42.5  
Linefill 34.2 27.4  
Pension plan assets 18.6 19.4  
Other 4.4 12.5  
Total deferred charges and other assets, net 1,464.3 1,379.5  
Amortization expense $ 371.6 358.3 $ 314.4
Indefinite-lived precious metal catalysts      
Indefinite-Lived Intangible Assets [Line Items]      
Catalyst, net   $ 115.0  
[1] Catalyst, net includes approximately $115.0 million of indefinite-lived precious metal catalysts as of both December 31, 2025 and December 31, 2024.