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Accumulated Other Comprehensive Income (Loss) | 12 Months Ended
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Dec. 31, 2013
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract] |
Accumulated Other Comprehensive Income (Loss) | Accumulated Other Comprehensive Income (Loss) AOCI reports a measure for accumulated changes in equity that result from transactions and other economic events other than transactions with shareholders. Information regarding AOCI is as follows:
| Accumulated Other Comprehensive Income (Loss)
| Unrealized Gain on Available-for-Sale Securities |  | Pension Liability Adjustment |  | Fair Value Adjustment for Cash Flow Hedges |  | Total
|  |  | (In thousands) |  |
PNMR |  |  |  |  |  |  |
Balance at December 31, 2010 | $ | 16,211 |  |  | $ | (83,254 | ) |  | $ | (1,623 | ) |  | $ | (68,666 | )
Amounts reclassified from AOCI (pre-tax) | (35,251 | ) |  | 4,292 |  |  | 3,448 |  |  | (27,511 | )
Income tax impact of amounts reclassified | 13,956 |  |  | (1,699 | ) |  | (1,230 | ) |  | 11,027 |
Other OCI changes (pre-tax) | 34,295 |  |  | (2,958 | ) |  | (1,002 | ) |  | 30,335 |
Income tax impact of other OCI changes | (13,577 | ) |  | 1,187 |  |  | 349 |  |  | (12,041 | )
Net change after income taxes | (577 | ) |  | 822 |  |  | 1,565 |  |  | 1,810 |
Balance at December 31, 2011 | 15,634 |  |  | (82,432 | ) |  | (58 | ) |  | (66,856 | )
Amounts reclassified from AOCI (pre-tax) | (37,269 | ) |  | 4,611 |  |  | 182 |  |  | (32,476 | )
Income tax impact of amounts reclassified | 14,755 |  |  | (1,825 | ) |  | (65 | ) |  | 12,865 |
Other OCI changes (pre-tax) | 38,548 |  |  | (30,084 | ) |  | (428 | ) |  | 8,036 |
Income tax impact of other OCI changes | (15,262 | ) |  | 11,910 |  |  | 153 |  |  | (3,199 | )
Net change after income taxes | 772 |  |  | (15,388 | ) |  | (158 | ) |  | (14,774 | )
Balance at December 31, 2012 | 16,406 |  |  | (97,820 | ) |  | (216 | ) |  | (81,630 | )
Amounts reclassified from AOCI (pre-tax) | (11,956 | ) |  | 6,364 |  |  | 207 |  |  | (5,385 | )
Income tax impact of amounts reclassified | 4,734 |  |  | (2,524 | ) |  | (73 | ) |  | 2,137 |
Other OCI changes (pre-tax) | 27,419 |  |  | 17,136 |  |  | (279 | ) |  | 44,276 |
Income tax impact of other OCI changes | (10,855 | ) |  | (6,781 | ) |  | 98 |  |  | (17,538 | )
Net change after income taxes | 9,342 |  |  | 14,195 |  |  | (47 | ) |  | 23,490 |
Balance at December 31, 2013 | $ | 25,748 |  |  | $ | (83,625 | ) |  | $ | (263 | ) |  | $ | (58,140 | )
| Accumulated Other Comprehensive Income (Loss)
| Unrealized Gain on Available-for-Sale Securities |  | Pension Liability Adjustment |  | Fair Value Adjustment for Cash Flow Hedges |  | Total
|  |  | (In thousands) |  |
PNM |  |  |  |  |  |  |
Balance at December 31, 2010 | $ | 16,211 |  |  | $ | (82,981 | ) |  | $ | (16 | ) |  | $ | (66,786 | )
Amounts reclassified from AOCI (pre-tax) | (35,251 | ) |  | 4,278 |  |  | 27 |  |  | (30,946 | )
Income tax impact of amounts reclassified | 13,956 |  |  | (1,694 | ) |  | (11 | ) |  | 12,251 |
Other OCI changes (pre-tax) | 34,295 |  |  | (3,369 | ) |  | — |  |  | 30,926 |
Income tax impact of other OCI changes | (13,577 | ) |  | 1,334 |  |  | — |  |  | (12,243 | )
Net change after income taxes | (577 | ) |  | 549 |  |  | 16 |  |  | (12 | )
Balance at December 31, 2011 | 15,634 |  |  | (82,432 | ) |  | — |  |  | (66,798 | )
Amounts reclassified from AOCI (pre-tax) | (37,269 | ) |  | 4,611 |  |  | — |  |  | (32,658 | )
Income tax impact of amounts reclassified | 14,755 |  |  | (1,825 | ) |  | — |  |  | 12,930 |
Other OCI changes (pre-tax) | 38,548 |  |  | (30,084 | ) |  | — |  |  | 8,464 |
Income tax impact of other OCI changes | (15,262 | ) |  | 11,910 |  |  | — |  |  | (3,352 | )
Net change after income taxes | 772 |  |  | (15,388 | ) |  | — |  |  | (14,616 | )
Balance at December 31, 2012 | 16,406 |  |  | (97,820 | ) |  | — |  |  | (81,414 | )
Amounts reclassified from AOCI (pre-tax) | (11,956 | ) |  | 6,364 |  |  | — |  |  | (5,592 | )
Income tax impact of amounts reclassified | 4,734 |  |  | (2,524 | ) |  | — |  |  | 2,210 |
Other OCI changes (pre-tax) | 27,419 |  |  | 17,136 |  |  | — |  |  | 44,555 |
Income tax impact of other OCI changes | (10,855 | ) |  | (6,781 | ) |  | — |  |  | (17,636 | )
Net change after income taxes | 9,342 |  |  | 14,195 |  |  | — |  |  | 23,537 |
Balance at December 31, 2013 | $ | 25,748 |  |  | $ | (83,625 | ) |  | $ | — |  |  | $ | (57,877 | )
| Accumulated Other Comprehensive Income (Loss)
| Unrealized Gain on Available-for-Sale Securities |  | Pension Liability Adjustment |  | Fair Value Adjustment for Cash Flow Hedges |  | Total
|  |  | (In thousands) |  |
TNMP |  |  |  |  |  |  |
Balance at December 31, 2010 | $ | — |  |  | $ | (275 | ) |  | $ | (1,210 | ) |  | $ | (1,485 | )
Amounts reclassified from AOCI (pre-tax) | — |  |  | 13 |  |  | 2,997 |  |  | 3,010 |
Income tax impact of amounts reclassified | — |  |  | (5 | ) |  | (1,068 | ) |  | (1,073 | )
Other OCI changes (pre-tax) | — |  |  | 414 |  |  | (1,207 | ) |  | (793 | )
Income tax impact of other OCI changes | — |  |  | (147 | ) |  | 430 |  |  | 283 |
Net change after income taxes | — |  |  | 275 |  |  | 1,152 |  |  | 1,427 |
Balance at December 31, 2011 | — |  |  | — |  |  | (58 | ) |  | (58 | )
Amounts reclassified from AOCI (pre-tax) | — |  |  | — |  |  | 182 |  |  | 182 |
Income tax impact of amounts reclassified | — |  |  | — |  |  | (65 | ) |  | (65 | )
Other OCI changes (pre-tax) | — |  |  | — |  |  | (428 | ) |  | (428 | )
Income tax impact of other OCI changes | — |  |  | — |  |  | 153 |  |  | 153 |
Net change after income taxes | — |  |  | — |  |  | (158 | ) |  | (158 | )
Balance at December 31, 2012 | — |  |  | — |  |  | (216 | ) |  | (216 | )
Amounts reclassified from AOCI (pre-tax) | — |  |  | — |  |  | 207 |  |  | 207 |
Income tax impact of amounts reclassified | — |  |  | — |  |  | (73 | ) |  | (73 | )
Other OCI changes (pre-tax) | — |  |  | — |  |  | (279 | ) |  | (279 | )
Income tax impact of other OCI changes | — |  |  | — |  |  | 98 |  |  | 98 |
Net change after income taxes | — |  |  | — |  |  | (47 | ) |  | (47 | )
Balance at December 31, 2013 | $ | — |  |  | $ | — |  |  | $ | (263 | ) |  | $ | (263 | )
Pre-tax amounts reclassified from AOCI related to Unrealized Gain on Available-for-Sale Securities are included in Gains on available-for-sale securities in the Consolidated Statements of Earnings. Pre-tax amounts reclassified from AOCI related to Pension Liability Adjustment are reclassified to Operating Expenses - Administrative and general in the Consolidated Statements of Earnings. For the year ended December 31, 2013, approximately 18.7% of the amount reclassified was capitalized into construction work in process and approximately 3.0%was capitalized into other accounts. Pre-tax amounts reclassified from AOCI related to Fair Value Adjustment for Cash Flow Hedges are reclassified to Interest Charges in the Consolidated Statements of Earnings. An insignificant amount is then capitalized as AFUDC. The income tax impacts of all amounts reclassified from AOCI are included in Income Taxes in the Consolidated Statements of Earnings.

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- Definition The entire disclosure for comprehensive income, which includes, but is not limited to, 1) the amount of income tax expense or benefit allocated to each component of other comprehensive income, including reclassification adjustments, 2) the reclassification adjustments for each classification of other comprehensive income and 3) the ending accumulated balances for each component of comprehensive income. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=28358780&loc=d3e637-108580 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14 -URI http://asc.fasb.org/extlink&oid=28358780&loc=d3e681-108580 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=28358780&loc=d3e689-108580 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 1A -URI http://asc.fasb.org/extlink&oid=28358780&loc=SL7669619-108580 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=28358780&loc=d3e640-108580 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=28358780&loc=d3e716-108580 Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 16 -URI http://asc.fasb.org/extlink&oid=28358780&loc=d3e709-108580 Reference 9: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Reclassification Adjustments -URI http://asc.fasb.org/extlink&oid=6522872 + Details
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