XML 40 R31.htm IDEA: XBRL DOCUMENT v3.24.1.1.u2
OPERATING REVENUES - Revenue Recognition (Details) - USD ($)
$ in Millions
Mar. 31, 2024
Dec. 31, 2023
Accounts receivable    
Disaggregation of operating revenue    
Due from contracts with customers $ 22.3 $ 19.8