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Segment Information | 12 Months Ended
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Dec. 31, 2011
Segment Reporting [Abstract] |
Segment Information | Segment Information The following segment presentation is based on the methodology that management uses for making operating decisions and assessing performance of its various business activities. A reconciliation of the segment presentation to the GAAP financial statements is provided. PNM Electric PNM Electric includes the retail electric utility operations of PNM that are subject to traditional rate regulation by the NMPRC. PNM Electric provides integrated electricity services that include the generation, transmission, and distribution of electricity for retail electric customers in New Mexico as well as the sale of transmission to third parties. PNM Electric also includes the generation and sale of electricity into the wholesale market. This includes the asset optimization of PNM’s jurisdictional assets as well as the capacity excluded from retail rates. FERC has jurisdiction over wholesale rates. TNMP Electric TNMP Electric is an electric utility providing regulated transmission and distribution services in Texas under the TECA. TNMP’s operations are subject to traditional rate regulation by the PUCT. PNM Gas PNM Gas distributed natural gas to most of the major communities in New Mexico, subject to traditional rate regulation by the NMPRC. As described in Note 2, PNM completed the sale of its gas operations on January 30, 2009. PNM Gas is reported as discontinued operations and is not included in the segment information presented below. See Note 22. First Choice First Choice, which was sold by PNMR on November 1, 2011 (Note 2), operated as a certified retail electric provider. First Choice provided electricity to residential, small commercial, and governmental customers. Although First Choice was regulated in certain respects by the PUCT, it was not subject to traditional rate regulation. Optim Energy Optim Energy was considered a separate segment for PNMR. PNMR’s investment in Optim Energy was held in the Corporate and Other segment Optim Energy’s revenues and expenses are not included in PNMR’s consolidated revenues and expenses or the following tables. See Note 21. Corporate and Other PNMR Services Company is included in the Corporate and Other segment. The following tables present summarized financial information for PNMR by segment. Excluding PNM Gas, which is presented as discontinued operations, PNM has only one segment. TNMP operates in only one segment. Therefore, tabular segment information is not presented for PNM and TNMP. Explanations for footnotes follow the tables. PNMR SEGMENT INFORMATION
2011 | PNM Electric |  | TNMP Electric |  | First Choice |  | Corporate and Other |  | Consolidated
|  |  |  |  | (In thousands) |  |  |  |
Operating revenues | $ | 1,057,289 |  |  | $ | 204,045 |  |  | $ | 439,450 |  |  | $ | (165 | ) |  | $ | 1,700,619 |
Intersegment revenues | — |  |  | 33,813 |  |  | — |  |  | (33,813 | ) |  | — |
Total revenues | 1,057,289 |  |  | 237,858 |  |  | 439,450 |  |  | (33,978 | ) |  | 1,700,619 |
Cost of energy | 362,237 |  |  | 41,166 |  |  | 323,331 |  |  | (33,812 | ) |  | 692,922 |
Gross margin | 695,052 |  |  | 196,692 |  |  | 116,119 |  |  | (166 | ) |  | 1,007,697 |
Other operating expenses | 438,822 |  |  | 88,234 |  |  | 75,966 |  |  | (9,671 | ) |  | 593,351 |
Depreciation and amortization | 94,787 |  |  | 44,616 |  |  | 1,098 |  |  | 16,546 |  |  | 157,047 |
Operating income (loss) | 161,443 |  |  | 63,842 |  |  | 39,055 |  |  | (7,041 | ) |  | 257,299 |
Interest income | 15,562 |  |  | 2 |  |  | 64 |  |  | (113 | ) |  | 15,515 |
Gain on sale of First Choice | — |  |  | — |  |  | — |  |  | 174,925 |  |  | 174,925 |
Other income (deductions) | 4,309 |  |  | 1,580 |  |  | (650 | ) |  | (15,660 | ) |  | (10,421 | )
Net interest charges | (75,349 | ) |  | (29,286 | ) |  | (581 | ) |  | (19,633 | ) |  | (124,849 | )
Earnings before income taxes | 105,965 |  |  | 36,138 |  |  | 37,888 |  |  | 132,478 |  |  | 312,469 |
Income taxes | 37,427 |  |  | 13,881 |  |  | 13,772 |  |  | 56,455 |  |  | 121,535 |
Earnings from continuing operations | 68,538 |  |  | 22,257 |  |  | 24,116 |  |  | 76,023 |  |  | 190,934 |
Valencia non-controlling interest | (14,047 | ) |  | — |  |  | — |  |  | — |  |  | (14,047 | )
Subsidiary preferred stock dividends | (528 | ) |  | — |  |  | — |  |  | — |  |  | (528 | )
Segment earnings from continuing operations attributable to PNMR | $ | 53,963 |  |  | $ | 22,257 |  |  | $ | 24,116 |  |  | $ | 76,023 |  |  | $ | 176,359 |
Gross property additions | $ | 251,345 |  |  | $ | 67,407 |  |  | $ | 2,089 |  |  | $ | 6,090 |  |  | $ | 326,931 |
At December 31, 2011: |  |  |  |  |  |  |  |  |
Total Assets | $ | 4,095,287 |  |  | $ | 1,037,445 |  |  | $ | — |  |  | $ | 71,881 |  |  | $ | 5,204,613 |
Goodwill | $ | 51,632 |  |  | $ | 226,665 |  |  | $ | — |  |  | $ | — |  |  | $ | 278,297 |
Additions to utility plant and non-utility plant included in accounts payable | $ | 26,815 |  |  | $ | 4,736 |  |  | $ | — |  |  | $ | 2,104 |  |  | $ | 33,655 |
2010 | PNM Electric |  | TNMP Electric |  | First Choice |  | Corporate and Other |  | Consolidated
|  |  |  |  | (In thousands) |  |  |  |
Operating revenues | $ | 1,017,128 |  |  | $ | 173,504 |  |  | $ | 483,203 |  |  | $ | (318 | ) |  | $ | 1,673,517 |
Intersegment revenues | — |  |  | 39,084 |  |  | — |  |  | (39,084 | ) |  | — |
Total revenues | 1,017,128 |  |  | 212,588 |  |  | 483,203 |  |  | (39,402 | ) |  | 1,673,517 |
Cost of energy | 352,270 |  |  | 37,064 |  |  | 350,476 |  |  | (39,083 | ) |  | 700,727 |
Gross margin | 664,858 |  |  | 175,524 |  |  | 132,727 |  |  | (319 | ) |  | 972,790 |
Other operating expenses | 424,455 |  |  | 77,387 |  |  | 92,077 |  |  | (12,285 | ) |  | 581,634 |
Depreciation and amortization | 92,281 |  |  | 41,726 |  |  | 864 |  |  | 16,833 |  |  | 151,704 |
Operating income (loss) | 148,122 |  |  | 56,411 |  |  | 39,786 |  |  | (4,867 | ) |  | 239,452 |
Interest income | 18,854 |  |  | 1 |  |  | 18 |  |  | 23 |  |  | 18,896 |
Equity in net earnings (loss) of Optim Energy | — |  |  | — |  |  | — |  |  | (203,399 | ) |  | (203,399 | )
Other income (deductions) | 12,712 |  |  | 771 |  |  | (411 | ) |  | (6,027 | ) |  | 7,045 |
Net interest charges | (72,400 | ) |  | (31,157 | ) |  | (1,268 | ) |  | (20,548 | ) |  | (125,373 | )
Earnings (loss) before income taxes | 107,288 |  |  | 26,026 |  |  | 38,125 |  |  | (234,818 | ) |  | (63,379 | )
Income taxes (benefit) | 36,427 |  |  | 10,044 |  |  | 14,064 |  |  | (92,790 | ) |  | (32,255 | )
Earnings (loss) from continuing operations | 70,861 |  |  | 15,982 |  |  | 24,061 |  |  | (142,028 | ) |  | (31,124 | )
Valencia non-controlling interest | (13,563 | ) |  | — |  |  | — |  |  | — |  |  | (13,563 | )
Subsidiary preferred stock dividends | (528 | ) |  | — |  |  | — |  |  | — |  |  | (528 | )
Segment earnings (loss) from continuing operations attributable to PNMR | $ | 56,770 |  |  | $ | 15,982 |  |  | $ | 24,061 |  |  | $ | (142,028 | ) |  | $ | (45,215 | )
Gross property additions | $ | 226,766 |  |  | $ | 41,018 |  |  | $ | 3,046 |  |  | $ | 10,658 |  |  | $ | 281,488 |
At December 31, 2010: |  |  |  |  |  |  |  |  |
Total Assets | $ | 3,875,573 |  |  | $ | 1,010,957 |  |  | $ | 218,411 |  |  | $ | 120,142 |  |  | $ | 5,225,083 |
Goodwill | $ | 51,632 |  |  | $ | 226,665 |  |  | $ | 43,013 |  |  | $ | — |  |  | $ | 321,310 |
2009 | PNM Electric |  | TNMP Electric |  | First Choice |  | Corporate and Other |  | Consolidated
|  |  |  |  | (In thousands) |  |  |  |
Operating revenues | $ | 967,998 |  |  | $ | 151,294 |  |  | $ | 528,818 |  |  | $ | (366 | ) |  | $ | 1,647,744 |
Intersegment revenues | 11 |  |  | 41,338 |  |  | — |  |  | (41,349 | ) |  | — |
Total revenues | 968,009 |  |  | 192,632 |  |  | 528,818 |  |  | (41,715 | ) |  | 1,647,744 |
Cost of energy | 378,145 |  |  | 34,728 |  |  | 346,454 |  |  | (41,338 | ) |  | 717,989 |
Gross margin | 589,864 |  |  | 157,904 |  |  | 182,364 |  |  | (377 | ) |  | 929,755 |
Other operating expenses | 420,473 |  |  | 75,540 |  |  | 107,354 |  |  | (13,503 | ) |  | 589,864 |
Depreciation and amortization | 92,140 |  |  | 37,262 |  |  | 1,809 |  |  | 16,738 |  |  | 147,949 |
Operating income (loss) | 77,251 |  |  | 45,102 |  |  | 73,201 |  |  | (3,612 | ) |  | 191,942 |
Interest income | 30,543 |  |  | 9 |  |  | 56 |  |  | (2,219 | ) |  | 28,389 |
Equity in net earnings (loss) of Optim Energy | — |  |  | — |  |  | — |  |  | (30,145 | ) |  | (30,145 | )
Other income (deductions) | 6,891 |  |  | 2,860 |  |  | (438 | ) |  | 17,457 |  |  | 26,770 |
Net interest charges | (69,058 | ) |  | (27,820 | ) |  | (2,782 | ) |  | (22,545 | ) |  | (122,205 | )
Earnings (loss) before income taxes | 45,627 |  |  | 20,151 |  |  | 70,037 |  |  | (41,064 | ) |  | 94,751 |
Income taxes (benefit) | 13,726 |  |  | 7,985 |  |  | 25,622 |  |  | (18,515 | ) |  | 28,818 |
Earnings (loss) from continuing operations | 31,901 |  |  | 12,166 |  |  | 44,415 |  |  | (22,549 | ) |  | 65,933 |
Valencia non-controlling interest | (11,890 | ) |  | — |  |  | — |  |  | — |  |  | (11,890 | )
Subsidiary preferred stock dividends | (528 | ) |  | — |  |  | — |  |  | — |  |  | (528 | )
Segment earnings (loss) from continuing operations attributable to PNMR | $ | 19,483 |  |  | $ | 12,166 |  |  | $ | 44,415 |  |  | $ | (22,549 | ) |  | $ | 53,515 |
Gross property additions (1) | $ | 253,335 |  |  | $ | 53,063 |  |  | $ | 863 |  |  | $ | 16,462 |  |  | $ | 284,597 |
At December 31, 2009: |  |  |  |  |  |  |  |  |
Total Assets | $ | 3,775,166 |  |  | $ | 1,009,055 |  |  | $ | 197,062 |  |  | $ | 378,638 |  |  | $ | 5,359,921 |
Goodwill | $ | 51,632 |  |  | $ | 226,665 |  |  | $ | 43,013 |  |  | $ | — |  |  | $ | 321,310 |
(1) | Excludes gross property additions related to PNM Gas discontinued operations of $3,434 and includes PNM’s purchase of an interest in PVNGS Unit 2 from another subsidiary of PNMR of $39,126.
Major Customers No individual customers accounted for more than 10% of the operating revenues of PNMR or PNM. First Choice is a customer of TNMP and accounted for 17% of its operating revenues from continuing operations in 2011, 18% in 2010, and 21% in 2009. One unaffiliated customer of TNMP accounted for 19% of its operating revenues from continuing operations in 2011, 19% in 2010, and 20% in 2009. Another unaffiliated customer of TNMP accounted for 12% of its operating revenues from continuing operations in 2011, 13% in 2010, and 13% in 2009.

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- Definition The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8595-108599 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8538-108599 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 33 -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8971-108599 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 34 -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8981-108599 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 29 -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8864-108599 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8380-108599 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 35 -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8984-108599 Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 41 -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e9038-108599 Reference 9: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 32 -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8933-108599 Reference 10: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 131 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 11: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 30 -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8906-108599 Reference 12: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 26 -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8844-108599 Reference 13: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 40 -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e9031-108599 Reference 14: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 42 -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e9054-108599 Reference 15: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 31 -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8924-108599 + Details
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