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Merger (Details) - Forecast - Merger Agreement - USD ($) $ / shares in Units, $ in Millions		3 Months Ended
	Jan. 20, 2022	Dec. 31, 2022
Business Acquisition [Line Items]
Business combination, cash right per common share (in dollars per share)		$ 50.30
Termination fees	$ 130.0
Out-of-pocket fees and expenses reimbursement		$ 10.0
Avangrid
Business Acquisition [Line Items]
Termination fees		$ 184.0

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- Definition

Business Combination, Cash Right Per Common Share

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- Definition

Out-of-pocket Fees And Expenses Reimbursement

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- Definition

Termination Fees

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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