XML 82 R71.htm IDEA: XBRL DOCUMENT v3.23.3
OPERATING REVENUES - OTHER OPERATING REVENUES (Details) - Other operating revenues - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2023
Sep. 30, 2022
Sep. 30, 2023
Sep. 30, 2022
Disaggregation of Operating Revenues        
Other operating revenues $ 13.4 $ 11.9 $ 63.3 $ 27.1
Late payment charges        
Disaggregation of Operating Revenues        
Other operating revenues 12.4 13.6 45.8 43.5
Alternative revenues        
Disaggregation of Operating Revenues        
Other operating revenues 0.0 (2.4) 13.9 (19.7)
Other        
Disaggregation of Operating Revenues        
Other operating revenues $ 1.0 $ 0.7 $ 3.6 $ 3.3