Income Taxes (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2024	Dec. 31, 2023
Income Tax [Line Items]
Federal detriment	$ 19	$ 20
Federal Benefit	16	16
Tax Credit Carryforward [Line Items]
Federal Benefit	16	16
Federal detriment	19	$ 20
Xcel Energy [Member]
Income Tax [Line Items]
Potential Tax Adjustments	$ 0

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.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 15
-Subparagraph (e)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482685/740-10-50-15

+ Details

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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.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482685/740-10-50-3

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- Definition

The federal tax effects resulting in a benefit under enacted tax laws.

+ References

No definition available.

+ Details

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- Definition

The federal tax effects resulting in a detriment under enacted tax laws.

+ References

No definition available.

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- Definition

The potential income tax expense that could become payable in the event of a successful challenge by a taxing authority of an entity's income tax position.

+ References

No definition available.

+ Details

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