Face (par) amount of debt instrument at time of issuance.

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

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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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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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No definition available.

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- Definition

ATM Net Proceeds

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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
	Mar. 31, 2025	Mar. 31, 2024	Dec. 31, 2024
Short-term Debt [Line Items]
Amount outstanding at period end	$ 719		$ 695
Proceeds from issuance of common stock	122	$ 8
ATM Net Proceeds	122
Letter of Credit
Short-term Debt [Line Items]
Amount outstanding at period end	$ 41		$ 42
Series Due May 15, 2034 \| Bonds [Member] \| PSCo
Short-term Debt [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	5.35%
Debt Instrument, Face Amount	$ 400
Series Due March 21, 2028 \| Bonds [Member] \| XCEL ENERGY INC [Member]
Short-term Debt [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	4.75%
Debt Instrument, Face Amount	$ 350
Series Due April 15, 2035 \| Bonds [Member] \| XCEL ENERGY INC [Member]
Short-term Debt [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	5.60%
Debt Instrument, Face Amount	$ 750
Series Due May 15, 2055 \| Bonds [Member] \| PSCo
Short-term Debt [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	5.85%
Debt Instrument, Face Amount	$ 600