Amount of revenue recognized that was previously included in balance of obligation to transfer good or service to customer for which consideration from customer has been received or is due.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 8
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=126920106&loc=SL49130549-203045

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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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- Definition

Period in which remaining performance obligation is expected to be recognized as revenue, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 13
-Subparagraph (b)(1)
-URI https://asc.fasb.org/extlink&oid=126920106&loc=SL49130556-203045

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- Definition

Number of contracts with one supplier

+ References

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- Definition

Number of days payment is due from the customer on a typical monthly billing cycle.

+ References

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+ Details

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- Definition

Number of performance obligations in a wholesale contract, which contains the sale of capacity bundled with electricity.

+ References

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+ Details

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- Definition

Represents the threshold percentage that actual fuel and purchased power costs can vary from costs charged to customers before deferral is required.

+ References

No definition available.

+ Details

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Summary of Significant Accounting Policies Operating Revenues (Details) $ in Millions	12 Months Ended
	Dec. 31, 2022 USD ($) contract performance_obligations	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)
Electric
Disaggregation of Operating Revenues
Number of days payment is due	30 days
Electric \| Retail
Disaggregation of Operating Revenues
Number of performance obligations	1
Percent fuel and purchased power costs can vary from the rate case approved costs before deferral is required	2.00%
Electric \| Wholesale
Disaggregation of Operating Revenues
Number of performance obligations	2
Number of contracts \| contract	1
Natural gas
Disaggregation of Operating Revenues
Number of days payment is due	30 days
Other non-utility revenues
Disaggregation of Operating Revenues
Number of days payment is due	30 days
Appliance service repairs \| Maximum
Disaggregation of Operating Revenues
Duration of contract for remaining performance obligations in contract	1 year
We Power revenues
Disaggregation of Operating Revenues
Revenues amortized from deferred revenue during the period \| $	$ 23.4	$ 23.3	$ 22.9