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Summary of Significant Accounting Policies - Summary of Estimated Service Lives (Details)	12 Months Ended
	Dec. 31, 2023
Minimum | Equipment | Electric Plant in Service
Public Utility, Property, Plant and Equipment [Line Items]
Production, useful life	21 years
Transmission, useful life	51 years
Distribution, useful life	10 years
General, useful life	5 years
Minimum | Equipment | Nonelectric Property, Plant and Equipment
Public Utility, Property, Plant and Equipment [Line Items]
Useful life	2 years
Minimum | Buildings and Leasehold Improvements | Nonelectric Property, Plant and Equipment
Public Utility, Property, Plant and Equipment [Line Items]
Useful life	2 years
Maximum | Equipment | Electric Plant in Service
Public Utility, Property, Plant and Equipment [Line Items]
Production, useful life	114 years
Transmission, useful life	75 years
Distribution, useful life	70 years
General, useful life	56 years
Maximum | Equipment | Nonelectric Property, Plant and Equipment
Public Utility, Property, Plant and Equipment [Line Items]
Useful life	20 years
Maximum | Buildings and Leasehold Improvements | Nonelectric Property, Plant and Equipment
Public Utility, Property, Plant and Equipment [Line Items]
Useful life	40 years

X

- Definition

Public Utilities, Property, Plant and Equipment, General, Useful Life

+ References

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+ Details

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- Definition

Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

+ References

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- Definition

Useful life of utility distribution assets owned by public utility, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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- Definition

Useful life of utility transmission equipment owned by public utility, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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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.

+ References

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