Merger (Details) - USD ($) $ / shares in Units, $ in Millions	Jun. 19, 2023	Apr. 20, 2023	Dec. 31, 2023
Business Acquisition [Line Items]
Merger agreement period extension	3 months
Merger Agreement
Business Acquisition [Line Items]
Termination fees		$ 130.0
Out-of-pocket fees and expenses reimbursement		10.0
Merger Agreement | Forecast
Business Acquisition [Line Items]
Business combination, cash right per common share (in dollars per share)			$ 50.30
Merger Agreement | Avangrid
Business Acquisition [Line Items]
Termination fees		$ 184.0