Summary of Significant Accounting Policies (Revenue) (Details) $ in Millions	1 Months Ended
Nov. 30, 2023 USD ($)
Public Utilities, General Disclosures [Line Items]
Revenue not yet approved	$ 1,100
Requested increase (decrease) revenue requirement	$ (290)
Requested increase (decrease) revenue requirement (as a percent)	(20.00%)

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.

No definition available.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration