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v3.24.0.1

Indeterminate AROs (Details) $ in Millions | Dec. 31, 2023 USD ($)
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Asset Retirement Obligations [Line Items] |
Indeterminate Costs Incurred, Asset Retirement Obligation Due to Asbestos | $ 0

X
- Definition -- None. No documentation exists for this element. -- + References No definition available. + Details
Name: | xel_AssetRetirementObligationsLineItems
Namespace Prefix: | xel_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Indeterminate Costs Incurred, Asset Retirement Obligation Due to Asbestos + References No definition available. + Details
Name: | xel_IndeterminateCostsIncurredAssetRetirementObligationDueToAsbestos
Namespace Prefix: | xel_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant