XML 74 R63.htm IDEA: XBRL DOCUMENT
v3.24.1.u1

Commitments and Contingencies - Marshall Wildfire (Details) $ in Millions | Mar. 31, 2024 USD ($) complaint
--- | ---
Commitments and Contingencies Disclosure [Abstract] |
Estimated property losses caused by Marshall Wildfire | $ 2,000.0
Number of complaints related to the Marshall Wildfire | complaint | 302
Cap of noneconomic loss in a civil action other than a medical malpractice under Colorado law | $ 0.6
Amount of insurance coverage | $ 500.0

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

X
- Definition Amount of insurance coverage + References No definition available. + Details
Name: | xel_AmountOfInsuranceCoverage
Namespace Prefix: | xel_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Cap of noneconomic loss in a civil action other than a medical malpractice under Colorado law + References No definition available. + Details
Name: | xel_CapOfNoneconomicLossInACivilActionOtherThanAMedicalMalpracticeUnderColoradoLaw
Namespace Prefix: | xel_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Estimated property losses caused by Marshall Wildfire + References No definition available. + Details
Name: | xel_EstimatedPropertyLossesCausedByMarshallWildfire
Namespace Prefix: | xel_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Number of complaints related to the Marshall Wildfire + References No definition available. + Details
Name: | xel_NumberOfComplaintsRelatedToTheMarshallWildfire
Namespace Prefix: | xel_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant