XML 127 R98.htm IDEA: XBRL DOCUMENT
v3.24.0.1

Nuclear Fuel Disposal (Details) - NSP Minnesota | Dec. 31, 2023 Canister
--- | ---
Monticello [Member] |
Loss Contingencies [Line Items] |
Number Of Authorized Canisters Filled And Placed In Dry Cask Nuclear Storage Facility | 30
Prairie Island [Member] |
Loss Contingencies [Line Items] |
Number Of Authorized Canisters Filled And Placed In Dry Cask Nuclear Storage Facility | 50
Number Of Authorized Canisters In Dry Cask Nuclear Storage Facility | 64

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 Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 460 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482425/460-10-50-3 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 450 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org//1943274/2147483076/450-20-50-1 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 450 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147483076/450-20-50-4 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 450 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147483076/450-20-50-4 Reference 5: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 450 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 9 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147483076/450-20-50-9 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Topic 450 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 9 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147483076/450-20-50-9 + Details
Name: | us-gaap_LossContingenciesLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of canisters authorized by the Minnesota Public Utility Commission that have been filled and placed in the Monticello dry-cask nuclear storage facility. + References No definition available. + Details
Name: | xel_NumberOfAuthorizedCanistersFilledAndPlacedInDryCaskNuclearStorageFacility
Namespace Prefix: | xel_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of canisters authorized by the Minnesota Public Utility Commission to be placed in the Monticello dry-cask nuclear storage facility. + References No definition available. + Details
Name: | xel_NumberOfAuthorizedCanistersInDryCaskNuclearStorageFacility
Namespace Prefix: | xel_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | xel_NuclearPlantAxis=xel_MonticelloMember
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: | xel_NuclearPlantAxis=xel_PrairieIslandMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |