Percentage points added to the reference rate to compute the variable rate on the debt instrument.

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- Definition

Fair value of the amount outstanding under the credit facility.

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- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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- Definition

The cash inflow from the additional capital contribution to the entity.

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- Definition

Reflects the total carrying amount as of the balance sheet date of debt having initial terms less than one year or the normal operating cycle, if longer.

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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.

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- Definition

2025 ATM Program Total Available Proceeds

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2026 ATM Program Total Available Proceeds

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- Definition

Required debt to total capitalization ratio

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No definition available.

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Borrowings and Other Financing Instruments Term Loan (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
	Jun. 30, 2026	Jun. 30, 2026	Jun. 30, 2025	Dec. 31, 2025
Short-term Debt [Line Items]
Amount outstanding at period end	$ 2,510	$ 2,510		$ 1,550
Proceeds from issuance of common stock		11	$ 1,143
2025 ATM Program Total Available Proceeds	4,000
2026 ATM Program Total Available Proceeds	4,300
Letter of Credit
Short-term Debt [Line Items]
Amount outstanding at period end	92	92		$ 92
Short-Term Debt \| Xcel Energy Inc. \| 364-Day Term Loan
Short-term Debt [Line Items]
Credit Facility	$ 1,500	$ 1,500
Required debt to total capitalization ratio	70.00%	70.00%
Debt Instrument, Basis Spread on Variable Rate		0.85%
Line of Credit Facility, Fair Value of Amount Outstanding	$ 1,500	$ 1,500