v3.26.3
Benefit Plans - Narrative (Details)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2026
USD ($)
Sep. 30, 2026
USD ($)
Defined Benefit Plan Disclosure [Line Items]    
Expected required and discretionary employer cash contributions $ 5.8 $ 5.8
Employer plan contributions $ 0.7 $ 4.0
CTWS Employees    
Defined Benefit Plan Disclosure [Line Items]    
Rate of compensation increase   3.00%