v3.26.3
OPERATING REVENUES - OTHER NON-UTILITY OPERATING REVENUES (Details) - Revenues from contracts with customers - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Disaggregation of Operating Revenues        
Revenues from contracts with customers $ 2,228.3 $ 2,088.3 $ 7,610.0 $ 7,189.1
Other non-utility revenues        
Disaggregation of Operating Revenues        
Revenues from contracts with customers 72.6 66.4 236.7 191.4
Other non-utility revenues | We Power revenues        
Disaggregation of Operating Revenues        
Revenues from contracts with customers 6.2 6.2 18.6 18.4
Transferred over time | Other non-utility revenues | Renewable generation revenues        
Disaggregation of Operating Revenues        
Revenues from contracts with customers 60.6 54.7 201.3 156.6
Transferred over time | Other non-utility revenues | Appliance service revenues        
Disaggregation of Operating Revenues        
Revenues from contracts with customers $ 5.8 $ 5.5 $ 16.8 $ 16.4