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Income Taxes (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Income Tax [Line Items]
Federal detriment	$ 20	$ 23
Tax Credit Carryforward [Line Items]
Federal detriment	20	23
Xcel Energy [Member]
Income Tax [Line Items]
Potential Tax Adjustments	$ 0
State and Local Jurisdiction [Member]
Income Tax [Line Items]
Federal Benefit		16
Tax Credit Carryforward [Line Items]
Federal Benefit		$ 16

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- Definition

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

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

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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.

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