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Summary of Budgeted Construction Expenditures (Details) (USD $) In Millions, unless otherwise specified | 12 Months Ended
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Dec. 31, 2014
Summary of Budgeted Construction Expenditures [Line Items] |
2015 | $ 569.2pnm_BudgetedFutureConstructionExpendituresYearOne
2016 | 514.4pnm_BudgetedFutureConstructionExpendituresYearTwo
2017 | 443.5pnm_BudgetedFutureConstructionExpendituresYearThree
2018 | 300.2pnm_BudgetedFutureConstructionExpendituresYearFour
2019 | 380.0pnm_BudgetedFutureConstructionExpendituresYearFive
Total | 2,207.3pnm_TotalBudgetedConstructionExpenditures
Public Service Company of New Mexico [Member] |
Summary of Budgeted Construction Expenditures [Line Items] |
2015 | 423.9pnm_BudgetedFutureConstructionExpendituresYearOne / dei_LegalEntityAxis = pnm_PublicServiceCompanyOfNewMexicoMember
2016 | 402.3pnm_BudgetedFutureConstructionExpendituresYearTwo / dei_LegalEntityAxis = pnm_PublicServiceCompanyOfNewMexicoMember
2017 | 334.8pnm_BudgetedFutureConstructionExpendituresYearThree / dei_LegalEntityAxis = pnm_PublicServiceCompanyOfNewMexicoMember
2018 | 180.6pnm_BudgetedFutureConstructionExpendituresYearFour / dei_LegalEntityAxis = pnm_PublicServiceCompanyOfNewMexicoMember
2019 | 260.3pnm_BudgetedFutureConstructionExpendituresYearFive / dei_LegalEntityAxis = pnm_PublicServiceCompanyOfNewMexicoMember
Total | 1,601.9pnm_TotalBudgetedConstructionExpenditures / dei_LegalEntityAxis = pnm_PublicServiceCompanyOfNewMexicoMember
Texas-New Mexico Power Company [Member] |
Summary of Budgeted Construction Expenditures [Line Items] |
2015 | 121.3pnm_BudgetedFutureConstructionExpendituresYearOne / dei_LegalEntityAxis = pnm_TexasNewMexicoPowerCompanyMember
2016 | 92.8pnm_BudgetedFutureConstructionExpendituresYearTwo / dei_LegalEntityAxis = pnm_TexasNewMexicoPowerCompanyMember
2017 | 93.3pnm_BudgetedFutureConstructionExpendituresYearThree / dei_LegalEntityAxis = pnm_TexasNewMexicoPowerCompanyMember
2018 | 105.9pnm_BudgetedFutureConstructionExpendituresYearFour / dei_LegalEntityAxis = pnm_TexasNewMexicoPowerCompanyMember
2019 | 105.0pnm_BudgetedFutureConstructionExpendituresYearFive / dei_LegalEntityAxis = pnm_TexasNewMexicoPowerCompanyMember
Total | 518.3pnm_TotalBudgetedConstructionExpenditures / dei_LegalEntityAxis = pnm_TexasNewMexicoPowerCompanyMember
Other Subsidiaries [Member] |
Summary of Budgeted Construction Expenditures [Line Items] |
2015 | 24.0pnm_BudgetedFutureConstructionExpendituresYearOne / dei_LegalEntityAxis = pnm_OtherSubsidiariesMember
2016 | 19.3pnm_BudgetedFutureConstructionExpendituresYearTwo / dei_LegalEntityAxis = pnm_OtherSubsidiariesMember
2017 | 15.4pnm_BudgetedFutureConstructionExpendituresYearThree / dei_LegalEntityAxis = pnm_OtherSubsidiariesMember
2018 | 13.7pnm_BudgetedFutureConstructionExpendituresYearFour / dei_LegalEntityAxis = pnm_OtherSubsidiariesMember
2019 | 14.7pnm_BudgetedFutureConstructionExpendituresYearFive / dei_LegalEntityAxis = pnm_OtherSubsidiariesMember
Total | 87.1pnm_TotalBudgetedConstructionExpenditures / dei_LegalEntityAxis = pnm_OtherSubsidiariesMember
San Juan Generating Station [Member] | Public Service Company of New Mexico [Member] |
Summary of Budgeted Construction Expenditures [Line Items] |
Environmental Upgrades Requirement Estimates | 70.7pnm_EnvironmentalUpgradesRequirementEstimates / us-gaap_JointlyOwnedUtilityPlantAxis = pnm_SanJuanGeneratingStationMember / dei_LegalEntityAxis = pnm_PublicServiceCompanyOfNewMexicoMember
Budgeted Construction Expenditures Related to Replacement Capacity | 268.4pnm_BudgetedConstructionExpendituresRelatedtoReplacementCapacity / us-gaap_JointlyOwnedUtilityPlantAxis = pnm_SanJuanGeneratingStationMember / dei_LegalEntityAxis = pnm_PublicServiceCompanyOfNewMexicoMember
Four Corners Units 4 and 5 (Coal) [Member] | Public Service Company of New Mexico [Member] |
Summary of Budgeted Construction Expenditures [Line Items] |
Environmental Upgrades Requirement Estimates | $ 80.0pnm_EnvironmentalUpgradesRequirementEstimates / us-gaap_JointlyOwnedUtilityPlantAxis = pnm_FourCornersUnits4And5CoalMember / dei_LegalEntityAxis = pnm_PublicServiceCompanyOfNewMexicoMember

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- Definition Budgeted Construction Expenditures Related to Replacement Capacity + References No definition available. + Details
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- Definition Budgeted Future Construction Expenditures, Year Five + References No definition available. + Details
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- Definition Budgeted Future Construction Expenditures, Year Four + References No definition available. + Details
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