v3.26.1
OPERATING REVENUES - OTHER OPERATING REVENUES (Details) - Other operating revenues - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Disaggregation of Operating Revenues        
Other operating revenues $ 51.3 $ 11.9 $ 114.6 $ 58.2
Alternative revenues        
Disaggregation of Operating Revenues        
Other operating revenues 10.1 (18.3) 37.0 0.0
Late payment charges        
Disaggregation of Operating Revenues        
Other operating revenues 15.3 13.9 31.2 27.7
Amortization of revenue intangibles        
Disaggregation of Operating Revenues        
Other operating revenues 14.6 14.4 29.3 28.0
Bepoke resources current return        
Disaggregation of Operating Revenues        
Other operating revenues 10.8 0.0 15.1 0.0
Other        
Disaggregation of Operating Revenues        
Other operating revenues $ 0.5 $ 1.9 $ 2.0 $ 2.5