XML 82 R45.htm IDEA: XBRL DOCUMENT
v2.4.0.8

Construction Program and Jointly-Owned Electric Generating Plants Schedule of Jointly Owned Utility Plants (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2013
Construction Program and Jointly-Owned Electric Generating Plants [Abstract] |
Schedule of Jointly Owned Utility Plants [Table Text Block] | At December 31, 2013, PNM’s interests and investments in jointly-owned generating facilities are:
Station (Fuel Type) | Plant in Service |  | Accumulated Depreciation |  | Construction Work in Progress |  | Composite Interest
| (In thousands)
SJGS (Coal) | $ | 1,004,138 |  |  | $ | (414,054 | ) |  | $ | 13,860 |  |  | 46.30 | %
PVNGS (Nuclear) (1) | $ | 508,426 |  |  | $ | (141,347 | ) |  | $ | 43,627 |  |  | 10.20 | %
Four Corners Units 4 and 5 (Coal) | $ | 159,016 |  |  | $ | (100,462 | ) |  | $ | 3,236 |  |  | 13.00 | %
Luna (Gas) | $ | 62,873 |  |  | $ | (17,743 | ) |  | $ | 169 |  |  | 33.33 | %
(1) | Includes interest in PVNGS Unit 3, interest in common facilities for all PVNGS units, and owned interests in PVNGS Units 1 and 2.
Summary of budgeted construction expenditures [Table Text Block] | An unaudited summary of the budgeted construction expenditures, including expenditures for jointly-owned projects, and nuclear fuel, is as follows:
| 2014 |  | 2015 |  | 2016 |  | 2017 |  | 2018 |  | Total
|  |  |  |  | (In millions) |  |  |  |
PNM | $ | 360.8 |  |  | $ | 433.7 |  |  | $ | 387.3 |  |  | $ | 335.4 |  |  | $ | 181.7 |  |  | $ | 1,698.9 |
TNMP | 129.9 |  |  | 76.0 |  |  | 87.8 |  |  | 93.9 |  |  | 106.4 |  |  | 494.0 |
Corporate and Other | 18.3 |  |  | 14.3 |  |  | 14.2 |  |  | 13.8 |  |  | 13.7 |  |  | 74.3 |
Total PNMR | $ | 509.0 |  |  | $ | 524.0 |  |  | $ | 489.3 |  |  | $ | 443.1 |  |  | $ | 301.8 |  |  | $ | 2,267.2 |

X
- Details
Name: | pnm_ConstructionProgramAndJointlyOwnedElectricGeneratingPlantsAbstract
Namespace Prefix: | pnm_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Summary of budgeted construction expenditures [Table Text Block] + References No definition available. + Details
Name: | pnm_SummaryOfBudgetedConstructionExpendituresTableTextBlock
Namespace Prefix: | pnm_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of proportionate interests in jointly owned utility plants. Includes the amount of plants in service, the accumulated provision for depreciation (if available), the amount of plants under construction, and the proportionate share. The amounts presented may be further subdivided to show amounts applicable to plant subcategories (for example, production, transmission, distribution). Includes statements that the amounts represent the utility's share in each joint plant and that it must provide its own financing. Information concerning two or more generating plants on the same site may be combined. States that the utility's share of direct expenses of the joint plants is included in the corresponding operating expenses on its income statement (for example, fuel, maintenance of plant, other operating expense). If the share of direct expenses is charged to purchased power, then disclose the amount so charged and the proportionate amounts charged to specific operating expenses on the records maintained for the joint plants. + 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_ScheduleOfJointlyOwnedUtilityPlantsTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration