XML 85 R94.htm IDEA: XBRL DOCUMENT
v2.4.0.8

Construction Program and Jointly-Owned Electric Generating Plants Construction Program and Jointly-Owned Electric Generating Plants (Details) (USD $) | 12 Months Ended
--- | ---
Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
Construction Expenditures | $ 348,039,000 |  | $ 308,909,000 | $ 326,931,000
Public Utilities, Property, Plant and Equipment, Plant in Service | 5,563,061,000 |  | 5,313,796,000 |
Public Utilities, Property, Plant and Equipment, Accumulated Depreciation | (1,838,832,000) |  | (1,774,223,000) |
Operating Lease, Extended Term | 2 years |  |  |
Public Service Company of New Mexico [Member] |  |  |  |
Construction Expenditures | 239,906,000 |  | 196,800,000 | 251,345,000
Public Utilities, Property, Plant and Equipment, Plant in Service | 4,314,016,000 |  | 4,133,532,000 |
Public Utilities, Property, Plant and Equipment, Accumulated Depreciation | (1,402,531,000) |  | (1,355,240,000) |
Texas-New Mexico Power Company [Member] |  |  |  |
Construction Expenditures | 89,117,000 |  | 92,973,000 | 67,407,000
Public Utilities, Property, Plant and Equipment, Plant in Service | 1,074,193,000 |  | 1,009,108,000 |
Public Utilities, Property, Plant and Equipment, Accumulated Depreciation | (352,105,000) |  | (339,315,000) |
Joint Projects [Member] | Public Service Company of New Mexico [Member] |  |  |  |
Construction Expenditures | 239,900,000 |  |  |
Joint Projects [Member] | Texas-New Mexico Power Company [Member] |  |  |  |
Construction Expenditures | 89,100,000 |  |  |
Joint Projects [Member] | PNMR [Member] |  |  |  |
Construction Expenditures | 348,000,000 |  |  |
Four Corners Units 4 and 5 (Coal) [Member] | Public Service Company of New Mexico [Member] |  |  |  |
Public Utilities, Property, Plant and Equipment, Plant in Service | 159,016,000 |  |  |
Public Utilities, Property, Plant and Equipment, Accumulated Depreciation | (100,462,000) |  |  |
Public Utilities, Property, Plant and Equipment, Construction Work in Progress | 3,236,000 |  |  |
Jointly Owned Utility Plant, Proportionate Ownership Share | 13.00% |  |  |
Environmental Upgrades Requirement Estimates | 80,300,000 |  |  |
Luna (Gas) [Member] | Other Unrelated Entities 9 [Member] |  |  |  |
Jointly Owned Utility Plant, Proportionate Ownership Share | 33.30% |  |  |
Luna (Gas) [Member] | Public Service Company of New Mexico [Member] |  |  |  |
Public Utilities, Property, Plant and Equipment, Plant in Service | 62,873,000 |  |  |
Public Utilities, Property, Plant and Equipment, Accumulated Depreciation | (17,743,000) |  |  |
Public Utilities, Property, Plant and Equipment, Construction Work in Progress | 169,000 |  |  |
Jointly Owned Utility Plant, Proportionate Ownership Share | 33.33% |  |  |
SJGS Units 1 and 2 [Member] | Public Service Company of New Mexico [Member] |  |  |  |
Jointly Owned Utility Plant, Proportionate Ownership Share | 50.00% |  |  |
SJGS (Coal) [Member] | Unit 3 [Member] | Other Unrelated Entities 1 [Member] |  |  |  |
Jointly Owned Utility Plant Proportionate Ownership Share, Other Entities | 41.80% |  |  |
SJGS (Coal) [Member] | Unit 3 [Member] | Other Unrelated Entities 2 [Member] |  |  |  |
Jointly Owned Utility Plant, Proportionate Ownership Share | 8.20% |  |  |
SJGS (Coal) [Member] | Unit 4 [Member] | Other Unrelated Entities 3 [Member] |  |  |  |
Jointly Owned Utility Plant Proportionate Ownership Share, Other Entities | 28.80% |  |  |
SJGS (Coal) [Member] | Unit 4 [Member] | Other Unrelated Entities 4 [Member] |  |  |  |
Jointly Owned Utility Plant Proportionate Ownership Share, Other Entities | 10.04% |  |  |
SJGS (Coal) [Member] | Unit 4 [Member] | Other Unrelated Entities 5 [Member] |  |  |  |
Jointly Owned Utility Plant Proportionate Ownership Share, Other Entities | 8.475% |  |  |
SJGS (Coal) [Member] | Unit 4 [Member] | Other Unrelated Entities 6 [Member] |  |  |  |
Jointly Owned Utility Plant Proportionate Ownership Share, Other Entities | 7.20% |  |  |
SJGS (Coal) [Member] | Unit 4 [Member] | Other Unrelated Entities 7 [Member] |  |  |  |
Jointly Owned Utility Plant Proportionate Ownership Share, Other Entities | 7.028% |  |  |
SJGS (Coal) [Member] | Public Service Company of New Mexico [Member] |  |  |  |
Public Utilities, Property, Plant and Equipment, Plant in Service | 1,004,138,000 |  |  |
Public Utilities, Property, Plant and Equipment, Accumulated Depreciation | (414,054,000) |  |  |
Public Utilities, Property, Plant and Equipment, Construction Work in Progress | 13,860,000 |  |  |
Jointly Owned Utility Plant, Proportionate Ownership Share | 46.30% |  |  |
SJGS (Coal) [Member] | Public Service Company of New Mexico [Member] | Unit 3 [Member] |  |  |  |
Jointly Owned Utility Plant, Proportionate Ownership Share | 50.00% |  |  |
SJGS (Coal) [Member] | Public Service Company of New Mexico [Member] | Unit 4 [Member] |  |  |  |
Jointly Owned Utility Plant, Proportionate Ownership Share | 38.457% |  |  |
Palo Verde Nuclear Generating Station [Member] | Public Service Company of New Mexico [Member] |  |  |  |
Public Utilities, Property, Plant and Equipment, Plant in Service | 508,426,000 | [1] |  |
Public Utilities, Property, Plant and Equipment, Accumulated Depreciation | (141,347,000) | [1] |  |
Public Utilities, Property, Plant and Equipment, Construction Work in Progress | $ 43,627,000 | [1] |  |
Jointly Owned Utility Plant, Proportionate Ownership Share | 10.20% | [1] |  |
Operating Lease, Original term | 40 years |  |  |
Number of operating units | 3 |  |  |
Operating Lease, Extended Term | 20 years |  |  |
[1] | Includes interest in PVNGS Unit 3, interest in common facilities for all PVNGS units, and owned interests in PVNGS Units 1 and 2.

X
- Definition Environmental Upgrades Requirement Estimates + References No definition available. + Details
Name: | pnm_EnvironmentalUpgradesRequirementEstimates
Namespace Prefix: | pnm_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Jointly Owned Utility Plant Proportionate Ownership Share, Other Entities + References No definition available. + Details
Name: | pnm_JointlyOwnedUtilityPlantProportionateOwnershipShareOtherEntities
Namespace Prefix: | pnm_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of operating units + References No definition available. + Details
Name: | pnm_NumberOfOperatingUnits
Namespace Prefix: | pnm_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Operating Lease, Extended Term + References No definition available. + Details
Name: | pnm_OperatingLeaseExtendedTerm
Namespace Prefix: | pnm_
Data Type: | us-types:durationStringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Operating Lease, Original Term + References No definition available. + Details
Name: | pnm_OperatingLeaseOriginalTerm
Namespace Prefix: | pnm_
Data Type: | us-types:durationStringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The proportionate share of interest (percent) in a jointly owned utility plant. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 980 -SubTopic 360 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 10.C) -URI http://asc.fasb.org/extlink&oid=6500719&loc=d3e659983-123033 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 10 -Section C + Details
Name: | us-gaap_JointlyOwnedUtilityPlantProportionateOwnershipShare
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition The cash outflow for purchases of and capital improvements on property, plant and equipment (capital expenditures), software, and other intangible assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3213-108585 + Details
Name: | us-gaap_PaymentsToAcquireProductiveAssets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Period end book value of accumulated depreciation on property, plant and equipment (PPE) that is owned by the regulated operations of the public utility. + References No definition available. + Details
Name: | us-gaap_PublicUtilitiesPropertyPlantAndEquipmentAccumulatedDepreciation
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Period end amount of construction work in progress in public utility. + References No definition available. + Details
Name: | us-gaap_PublicUtilitiesPropertyPlantAndEquipmentConstructionWorkInProgress
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Period end amount of total gross PPE. + References No definition available. + Details
Name: | us-gaap_PublicUtilitiesPropertyPlantAndEquipmentPlantInService
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant