XML 49 R38.htm IDEA: XBRL DOCUMENT
v3.25.3

Borrowings and Other Financing Instruments Long-Term Borrowings (Details) - Bonds [Member] $ in Millions | Sep. 30, 2025 USD ($)
--- | ---
Series Due May 15, 2034 | PSCo |
Forward Contract Indexed to Issuer's Equity [Line Items] |
Debt Instrument, Face Amount | $ 400
Debt Instrument, Interest Rate, Stated Percentage | 5.35%
Series due May 15, 2035 | NSP-Minnesota |
Forward Contract Indexed to Issuer's Equity [Line Items] |
Debt Instrument, Face Amount | $ 600
Debt Instrument, Interest Rate, Stated Percentage | 5.05%
Series due May 15, 2035 | SPS |
Forward Contract Indexed to Issuer's Equity [Line Items] |
Debt Instrument, Face Amount | $ 500
Debt Instrument, Interest Rate, Stated Percentage | 5.30%
Series Due May 15, 2055 | PSCo |
Forward Contract Indexed to Issuer's Equity [Line Items] |
Debt Instrument, Face Amount | $ 800
Debt Instrument, Interest Rate, Stated Percentage | 5.85%
Series Due May 15, 2055 | NSP-Minnesota |
Forward Contract Indexed to Issuer's Equity [Line Items] |
Debt Instrument, Face Amount | $ 500
Debt Instrument, Interest Rate, Stated Percentage | 5.65%
Series Due June 15, 2054 | NSP-Wisconsin |
Forward Contract Indexed to Issuer's Equity [Line Items] |
Debt Instrument, Face Amount | $ 250
Debt Instrument, Interest Rate, Stated Percentage | 5.65%
Series Due March 21, 2028 | XCEL ENERGY INC [Member] |
Forward Contract Indexed to Issuer's Equity [Line Items] |
Debt Instrument, Face Amount | $ 350
Debt Instrument, Interest Rate, Stated Percentage | 4.75%
Series Due April 15, 2035 | XCEL ENERGY INC [Member] |
Forward Contract Indexed to Issuer's Equity [Line Items] |
Debt Instrument, Face Amount | $ 750
Debt Instrument, Interest Rate, Stated Percentage | 5.60%
Series Due October 15, 2085 | XCEL ENERGY INC [Member] |
Forward Contract Indexed to Issuer's Equity [Line Items] |
Debt Instrument, Face Amount | $ 900
6.25% Junior Subordinated Notes due 2085 [Member] | XCEL ENERGY INC [Member] |
Forward Contract Indexed to Issuer's Equity [Line Items] |
Debt Instrument, Interest Rate, Stated Percentage | 6.25%
Series Due September 15, 2035 | PSCo |
Forward Contract Indexed to Issuer's Equity [Line Items] |
Debt Instrument, Face Amount | $ 800
Debt Instrument, Interest Rate, Stated Percentage | 5.15%

X
- Definition Face (par) amount of debt instrument at time of issuance. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 835 -SubTopic 30 -Name Accounting Standards Codification -Section 55 -Paragraph 8 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482949/835-30-55-8 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1B -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481139/470-20-50-1B Reference 3: http://www.xbrl.org/2003/role/exampleRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 69B -Publisher FASB -URI https://asc.fasb.org/1943274/2147481568/470-20-55-69B Reference 4: http://www.xbrl.org/2003/role/exampleRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 69C -Publisher FASB -URI https://asc.fasb.org/1943274/2147481568/470-20-55-69C Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 835 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482900/835-30-50-1 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Topic 835 -SubTopic 30 -Name Accounting Standards Codification -Section 45 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482925/835-30-45-2 + Details
Name: | us-gaap_DebtInstrumentFaceAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)(a)(1)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1B -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481139/470-20-50-1B + Details
Name: | us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- 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 No definition available. + Details
Name: | us-gaap_ForwardContractIndexedToIssuersEquityLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_DebtInstrumentAxis=xel_SeriesDueMay152034Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=us-gaap_BondsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=xel_PscoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=xel_SeriesDueMay152035Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=xel_NspMinnesotaMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=xel_SpsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=xel_SeriesDueMay152055Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=xel_SeriesDueJune152054Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=xel_NSPWisconsinMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=xel_SeriesDueMarch212028Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=xel_XCELENERGYINCMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=xel_SeriesDueApril152035Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=xel_SeriesDueOctober152085Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=xel_A6.25JuniorSubordinatedNotesDue2085Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=xel_SeriesDueSeptember152035Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |