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Fair Value of Derivative and Other Financial Instruments - Defined Benefit Plans Disclosure (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018
Significant Unobservable Inputs (Level 3) |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets at beginning of year | $ 2,156 |
Fair value of plan assets at end of year | 0 | $ 2,156
Significant Unobservable Inputs (Level 3) | Mutual Fund |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets at beginning of year |  | 0
Actual return on assets sold during the period | (84) | (38)
Actual return on assets still held at period end | 56 | (107)
Purchases | 3,110 | 5,539
Sales | (5,238) | (3,238)
Public Service Company of New Mexico | Pension Plan |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets at beginning of year | 489,978 | 562,016
Fair value of plan assets at end of year | 531,467 | 489,978
Public Service Company of New Mexico | Pension Plan | Participation in PNMR Master Trust Investments: | Fair Value Measurement [Domain] |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets at beginning of year | 412,790 |
Fair value of plan assets at end of year | 445,984 | 412,790
Public Service Company of New Mexico | Pension Plan | Participation in PNMR Master Trust Investments: |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets at beginning of year | 489,664 |
Fair value of plan assets at end of year | 532,659 | 489,664
Public Service Company of New Mexico | Pension Plan | Participation in PNMR Master Trust Investments: | Estimate of Fair Value Measurement |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets at beginning of year | 76,874 |
Fair value of plan assets at end of year | 86,675 | 76,874
Public Service Company of New Mexico | Other Postretirement Benefits |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Total fair value of plan assets owned | 86,749 | 69,703
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets at beginning of year | 69,703 | 80,356
Fair value of plan assets at end of year | 86,400 | 69,703
Public Service Company of New Mexico | Other Postretirement Benefits | Cash and cash equivalents |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets at beginning of year | 190 |
Fair value of plan assets at end of year | 1,022 | 190
Public Service Company of New Mexico | Other Postretirement Benefits | Mutual funds |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets at beginning of year | 69,513 |
Fair value of plan assets at end of year | 85,727 | 69,513
Public Service Company of New Mexico | Quoted Prices in Active Markets for Identical Assets (Level 1) | Pension Plan | Participation in PNMR Master Trust Investments: |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets at beginning of year | 139,673 |
Fair value of plan assets at end of year | 152,158 | 139,673
Public Service Company of New Mexico | Quoted Prices in Active Markets for Identical Assets (Level 1) | Other Postretirement Benefits |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Total fair value of plan assets owned | 40,383 | 32,515
Public Service Company of New Mexico | Quoted Prices in Active Markets for Identical Assets (Level 1) | Other Postretirement Benefits | Cash and cash equivalents |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets at beginning of year | 190 |
Fair value of plan assets at end of year | 1,022 | 190
Public Service Company of New Mexico | Quoted Prices in Active Markets for Identical Assets (Level 1) | Other Postretirement Benefits | Mutual funds |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets at beginning of year | 32,325 |
Fair value of plan assets at end of year | 39,361 | 32,325
Public Service Company of New Mexico | Significant Other Observable Inputs (Level 2) | Pension Plan | Participation in PNMR Master Trust Investments: |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets at beginning of year | 272,829 |
Fair value of plan assets at end of year | 293,826 | 272,829
Public Service Company of New Mexico | Significant Other Observable Inputs (Level 2) | Other Postretirement Benefits |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Total fair value of plan assets owned | 46,366 | 37,188
Public Service Company of New Mexico | Significant Other Observable Inputs (Level 2) | Other Postretirement Benefits | Cash and cash equivalents |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets at beginning of year | 0 |
Fair value of plan assets at end of year | 0 | 0
Public Service Company of New Mexico | Significant Other Observable Inputs (Level 2) | Other Postretirement Benefits | Mutual funds |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets at beginning of year | 37,188 |
Fair value of plan assets at end of year | 46,366 | 37,188
Public Service Company of New Mexico | Significant Unobservable Inputs (Level 3) |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets at beginning of year | 288 | 191
Fair value of plan assets at end of year | 0 | 288
Public Service Company of New Mexico | Significant Unobservable Inputs (Level 3) | U.S. government |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Actual return on assets sold during the period | (48) | (7)
Actual return on assets still held at period end | 0 | (1)
Purchases | 133 | 192
Sales | (373) | (87)
Public Service Company of New Mexico | Significant Unobservable Inputs (Level 3) | Pension Plan | Participation in PNMR Master Trust Investments: |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets at beginning of year | 288 |
Fair value of plan assets at end of year | 0 | 288
Public Service Company of New Mexico | Significant Unobservable Inputs (Level 3) | Other Postretirement Benefits |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Total fair value of plan assets owned | 0 | 0
Public Service Company of New Mexico | Significant Unobservable Inputs (Level 3) | Other Postretirement Benefits | Cash and cash equivalents |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets at beginning of year | 0 |
Fair value of plan assets at end of year | 0 | 0
Public Service Company of New Mexico | Significant Unobservable Inputs (Level 3) | Other Postretirement Benefits | Mutual funds |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets at beginning of year | 0 |
Fair value of plan assets at end of year | 0 | 0
Texas-New Mexico Power Company | Pension Plan |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets at beginning of year | 55,074 | 63,499
Fair value of plan assets at end of year | 59,367 | 55,074
Texas-New Mexico Power Company | Pension Plan | Participation in PNMR Master Trust Investments: | Fair Value Measurement [Domain] |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets at beginning of year | 45,283 |
Fair value of plan assets at end of year | 49,353 | 45,283
Texas-New Mexico Power Company | Pension Plan | Participation in PNMR Master Trust Investments: |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets at beginning of year | 54,661 |
Fair value of plan assets at end of year | 59,327 | 54,661
Texas-New Mexico Power Company | Pension Plan | Participation in PNMR Master Trust Investments: | Estimate of Fair Value Measurement |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets at beginning of year | 9,378 |
Fair value of plan assets at end of year | 9,974 | 9,378
Texas-New Mexico Power Company | Other Postretirement Benefits |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Total fair value of plan assets owned | 10,910 | 8,791
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets at beginning of year | 8,744 | 10,002
Fair value of plan assets at end of year | 10,844 | 8,744
Texas-New Mexico Power Company | Other Postretirement Benefits | Cash and cash equivalents |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets at beginning of year | 66 |
Fair value of plan assets at end of year | 275 | 66
Texas-New Mexico Power Company | Other Postretirement Benefits | Mutual funds |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets at beginning of year | 8,725 |
Fair value of plan assets at end of year | 10,635 | 8,725
Texas-New Mexico Power Company | Quoted Prices in Active Markets for Identical Assets (Level 1) | Pension Plan | Participation in PNMR Master Trust Investments: |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets at beginning of year | 15,149 |
Fair value of plan assets at end of year | 17,335 | 15,149
Texas-New Mexico Power Company | Quoted Prices in Active Markets for Identical Assets (Level 1) | Other Postretirement Benefits |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Total fair value of plan assets owned | 4,350 | 3,789
Texas-New Mexico Power Company | Quoted Prices in Active Markets for Identical Assets (Level 1) | Other Postretirement Benefits | Cash and cash equivalents |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets at beginning of year | 66 |
Fair value of plan assets at end of year | 275 | 66
Texas-New Mexico Power Company | Quoted Prices in Active Markets for Identical Assets (Level 1) | Other Postretirement Benefits | Mutual funds |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets at beginning of year | 3,723 |
Fair value of plan assets at end of year | 4,075 | 3,723
Texas-New Mexico Power Company | Significant Other Observable Inputs (Level 2) | Pension Plan | Participation in PNMR Master Trust Investments: |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets at beginning of year | 30,101 |
Fair value of plan assets at end of year | 32,018 | 30,101
Texas-New Mexico Power Company | Significant Other Observable Inputs (Level 2) | Other Postretirement Benefits |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Total fair value of plan assets owned | 6,560 | 5,002
Texas-New Mexico Power Company | Significant Other Observable Inputs (Level 2) | Other Postretirement Benefits | Cash and cash equivalents |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets at beginning of year | 0 |
Fair value of plan assets at end of year | 0 | 0
Texas-New Mexico Power Company | Significant Other Observable Inputs (Level 2) | Other Postretirement Benefits | Mutual funds |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets at beginning of year | 5,002 |
Fair value of plan assets at end of year | 6,560 | 5,002
Texas-New Mexico Power Company | Significant Unobservable Inputs (Level 3) |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets at beginning of year | 33 | 21
Fair value of plan assets at end of year | 0 | 33
Texas-New Mexico Power Company | Significant Unobservable Inputs (Level 3) | U.S. government |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Actual return on assets sold during the period | (5) | (1)
Actual return on assets still held at period end | 0 | 0
Purchases | 15 | 23
Sales | (43) | (10)
Texas-New Mexico Power Company | Significant Unobservable Inputs (Level 3) | Pension Plan | Participation in PNMR Master Trust Investments: |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets at beginning of year | 33 |
Fair value of plan assets at end of year | 0 | 33
Texas-New Mexico Power Company | Significant Unobservable Inputs (Level 3) | Other Postretirement Benefits |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Total fair value of plan assets owned | 0 | 0
Texas-New Mexico Power Company | Significant Unobservable Inputs (Level 3) | Other Postretirement Benefits | Cash and cash equivalents |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets at beginning of year | 0 |
Fair value of plan assets at end of year | 0 | 0
Texas-New Mexico Power Company | Significant Unobservable Inputs (Level 3) | Other Postretirement Benefits | Mutual funds |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets at beginning of year | 0 |
Fair value of plan assets at end of year | 0 | 0
PNMR | Fair Value Measurement [Domain] |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets at beginning of year | 458,073 |
Fair value of plan assets at end of year | 495,337 | 458,073
PNMR |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets at beginning of year | 544,325 |
Fair value of plan assets at end of year | 591,986 | 544,325
PNMR | Cash and cash equivalents |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets at beginning of year | 20,120 |
Fair value of plan assets at end of year | 19,982 | 20,120
PNMR | International funds |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets at beginning of year | 54,270 |
Fair value of plan assets at end of year | 68,497 | 54,270
PNMR | Domestic value |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets at beginning of year | 874 |
Fair value of plan assets at end of year | 825 | 874
PNMR | Domestic growth |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets at beginning of year | 143,517 |
Fair value of plan assets at end of year | 172,326 | 143,517
PNMR | U.S. government |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets at beginning of year | 84,459 |
Fair value of plan assets at end of year | 90,970 | 84,459
PNMR | International government |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets at beginning of year | 5,721 |
Fair value of plan assets at end of year | 5,411 | 5,721
PNMR | Municipals |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets at beginning of year | 9,558 |
Fair value of plan assets at end of year | 6,980 | 9,558
PNMR | Corporate and other |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets at beginning of year | 139,554 |
Fair value of plan assets at end of year | 130,346 | 139,554
PNMR | Private equity funds | Estimate of Fair Value Measurement |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets at beginning of year | 18,021 |
Fair value of plan assets at end of year | 15,827 | 18,021
PNMR | Hedge funds | Estimate of Fair Value Measurement |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets at beginning of year | 45,589 |
Fair value of plan assets at end of year | 47,618 | 45,589
PNMR | Real estate funds | Estimate of Fair Value Measurement |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets at beginning of year | 22,642 |
Fair value of plan assets at end of year | 33,204 | 22,642
PNMR | Quoted Prices in Active Markets for Identical Assets (Level 1) |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets at beginning of year | 154,822 |
Fair value of plan assets at end of year | 169,493 | 154,822
PNMR | Quoted Prices in Active Markets for Identical Assets (Level 1) | Cash and cash equivalents |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets at beginning of year | 20,120 |
Fair value of plan assets at end of year | 19,982 | 20,120
PNMR | Quoted Prices in Active Markets for Identical Assets (Level 1) | International funds |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets at beginning of year | 54,270 |
Fair value of plan assets at end of year | 68,497 | 54,270
PNMR | Quoted Prices in Active Markets for Identical Assets (Level 1) | Domestic value |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets at beginning of year | 0 |
Fair value of plan assets at end of year | 0 | 0
PNMR | Quoted Prices in Active Markets for Identical Assets (Level 1) | Domestic growth |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets at beginning of year | 0 |
Fair value of plan assets at end of year | 0 | 0
PNMR | Quoted Prices in Active Markets for Identical Assets (Level 1) | U.S. government |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets at beginning of year | 80,482 |
Fair value of plan assets at end of year | 81,014 | 80,482
PNMR | Quoted Prices in Active Markets for Identical Assets (Level 1) | International government |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets at beginning of year | 0 |
Fair value of plan assets at end of year | 0 | 0
PNMR | Quoted Prices in Active Markets for Identical Assets (Level 1) | Municipals |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets at beginning of year | 0 |
Fair value of plan assets at end of year | 0 | 0
PNMR | Quoted Prices in Active Markets for Identical Assets (Level 1) | Corporate and other |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets at beginning of year | (50) |
Fair value of plan assets at end of year | 0 | (50)
PNMR | Significant Other Observable Inputs (Level 2) |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets at beginning of year | 302,930 |
Fair value of plan assets at end of year | 325,844 | 302,930
PNMR | Significant Other Observable Inputs (Level 2) | Cash and cash equivalents |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets at beginning of year | 0 |
Fair value of plan assets at end of year | 0 | 0
PNMR | Significant Other Observable Inputs (Level 2) | International funds |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets at beginning of year | 0 |
Fair value of plan assets at end of year | 0 | 0
PNMR | Significant Other Observable Inputs (Level 2) | Domestic value |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets at beginning of year | 874 |
Fair value of plan assets at end of year | 825 | 874
PNMR | Significant Other Observable Inputs (Level 2) | Domestic growth |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets at beginning of year | 143,517 |
Fair value of plan assets at end of year | 172,326 | 143,517
PNMR | Significant Other Observable Inputs (Level 2) | U.S. government |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets at beginning of year | 3,977 |
Fair value of plan assets at end of year | 9,956 | 3,977
PNMR | Significant Other Observable Inputs (Level 2) | International government |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets at beginning of year | 5,721 |
Fair value of plan assets at end of year | 5,411 | 5,721
PNMR | Significant Other Observable Inputs (Level 2) | Municipals |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets at beginning of year | 9,558 |
Fair value of plan assets at end of year | 6,980 | 9,558
PNMR | Significant Other Observable Inputs (Level 2) | Corporate and other |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets at beginning of year | 139,283 |
Fair value of plan assets at end of year | 130,346 | 139,283
PNMR | Significant Unobservable Inputs (Level 3) |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets at beginning of year | 321 | 212
Fair value of plan assets at end of year | 0 | 321
PNMR | Significant Unobservable Inputs (Level 3) | Cash and cash equivalents |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets at beginning of year | 0 |
Fair value of plan assets at end of year | 0 | 0
PNMR | Significant Unobservable Inputs (Level 3) | International funds |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets at beginning of year | 0 |
Fair value of plan assets at end of year | 0 | 0
PNMR | Significant Unobservable Inputs (Level 3) | Domestic value |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets at beginning of year | 0 |
Fair value of plan assets at end of year | 0 | 0
PNMR | Significant Unobservable Inputs (Level 3) | Domestic growth |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets at beginning of year | 0 |
Fair value of plan assets at end of year | 0 | 0
PNMR | Significant Unobservable Inputs (Level 3) | U.S. government |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets at beginning of year | 0 |
Actual return on assets sold during the period | (53) | (8)
Actual return on assets still held at period end | 0 | (1)
Purchases | 148 | 215
Sales | (416) | (97)
Fair value of plan assets at end of year | 0 | 0
PNMR | Significant Unobservable Inputs (Level 3) | International government |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets at beginning of year | 0 |
Fair value of plan assets at end of year | 0 | 0
PNMR | Significant Unobservable Inputs (Level 3) | Municipals |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets at beginning of year | 0 |
Fair value of plan assets at end of year | 0 | 0
PNMR | Significant Unobservable Inputs (Level 3) | Corporate and other |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets at beginning of year | 321 |
Fair value of plan assets at end of year | $ 0 | $ 321

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- Definition Amount, measured using unobservable inputs, of increase (decrease) in plan assets of defined benefit plan from actual return (loss) on assets sold. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(iv)(02)(A) -URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 55 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=118257860&loc=d3e4179-114921 + Details
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- Definition Amount, measured using unobservable inputs, of increase (decrease) in plan assets of defined benefit plan from actual return (loss) on assets still held. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(iv)(02)(A) -URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 55 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=118257860&loc=d3e4179-114921 + Details
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