v3.25.4
Business Description And Significant Accounting Policies: Goodwill (Details) - USD ($)
$ in Millions
Dec. 31, 2025
Dec. 31, 2024
Goodwill [Line Items]    
Goodwill $ 1,299.5 $ 1,299.5
Electric Utilities    
Goodwill [Line Items]    
Goodwill 257.3 257.3
Gas Utilities    
Goodwill [Line Items]    
Goodwill $ 1,042.2 $ 1,042.2