Incentive Plans Including Share-Based Compensation (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	12 Months Ended
Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Equity Instruments Other than Options Activity [Roll Forward]
Balance at January 1 (in shares)	819
Granted (in shares)	658	586	395
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period (in shares)	(111)
Vested (in shares)	(282)	(329)	(319)
Dividend equivalents (in shares)	55
Balance at December 31 (in shares)	1,139	819
Equity Instruments Other than Options, Weighted Average Grant Date Fair Value [Abstract]
Balance at January 1, weighted average grant date fair value (in dollars per share)	$ 67.36
Granted, weighted average grant date fair value (in dollars per share)	63.02	$ 67.06	$ 68.43
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value (in dollars per share)	$ 66.77
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value	$ 19	$ 20	$ 22
Vested, weighted average grant date fair value (in dollars per share)	$ 68.58
Dividend equivalents, weighted average grant date fair value (in dollars per share)	66.16
Balance at December 31, weighted average grant date fair value (in dollars per share)	$ 64.55	$ 67.36
Service-based awards [Member]
Equity Instruments Other than Options Activity [Roll Forward]
Granted (in shares)	500	400	200
Service-based awards [Member] \| Xcel Energy Inc. 2015 Omnibus Incentive Plan [Member]
Equity Instruments Other than Options, Weighted Average Grant Date Fair Value [Abstract]
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized	6,000
Service-based awards [Member] \| Xcel Energy Inc. 2024 Equity Incentive Plan
Equity Instruments Other than Options Activity [Roll Forward]
Granted (in shares)	13,000

No definition available.

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The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

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Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event.

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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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- Definition

The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
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-Name Accounting Standards Codification
-Section 50
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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Per share or unit weighted-average fair value of nonvested award under share-based payment arrangement. Excludes share and unit options.

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The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

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Fair value of share-based awards for which the grantee gained the right by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash.

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The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.

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Number of shares authorized for issuance under share-based payment arrangement.

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The weighted average fair value as of grant dates pertaining to a share-based award plan other than a stock option plan for dividend equivalents on shares outstanding during the period in accordance with the terms of the arrangement.

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The number of shares issuable under a share-based award plan pertaining to dividend equivalents on shares outstanding during the period on other than stock option plans.

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No definition available.

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