XML 74 R51.htm IDEA: XBRL DOCUMENT
v3.3.1.900

Segment Information - Schedule (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2015 | Sep. 30, 2015 | Jun. 30, 2015 | Mar. 31, 2015 | Dec. 31, 2014 | Sep. 30, 2014 | Jun. 30, 2014 | Mar. 31, 2014 | Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Electric Operating Revenues | $ 335,894 | $ 417,433 | $ 352,887 | $ 332,868 | $ 346,845 | $ 413,951 | $ 346,160 | $ 328,897 | $ 1,439,082 | $ 1,435,853 | $ 1,387,923
Cost of energy |  |  |  |  |  |  |  |  | 464,649 | 471,556 | 432,316
Margin |  |  |  |  |  |  |  |  | 974,433 | 964,297 | 955,607
Other operating expenses |  |  |  |  |  |  |  |  | 664,164 | 491,966 | 501,884
Depreciation and amortization |  |  |  |  |  |  |  |  | 185,919 | 172,634 | 166,881
Operating income | (119,138) | 121,505 | 72,414 | 49,569 | 62,849 | 116,799 | 71,296 | 48,753 | 124,350 | 299,697 | 286,842
Interest income |  |  |  |  |  |  |  |  | 6,498 | 8,483 | 10,043
Other income (deductions) |  |  |  |  |  |  |  |  | 30,165 | 12,094 | (368)
Interest charges |  |  |  |  |  |  |  |  | (114,860) | (119,627) | (121,448)
Earnings before Income Taxes |  |  |  |  |  |  |  |  | 46,153 | 200,647 | 175,069
Income Taxes |  |  |  |  |  |  |  |  | 15,075 | 69,738 | 59,513
Net Earnings | (87,284) | $ 64,855 | $ 35,655 | $ 17,852 | 22,111 | $ 59,486 | $ 33,181 | $ 16,131 | 31,078 | 130,909 | 115,556
Valencia non-controlling interest |  |  |  |  |  |  |  |  | (14,910) | (14,127) | (14,521)
Preferred Stock Dividend Requirements of Subsidiary |  |  |  |  |  |  |  |  | (528) | (528) | (528)
Segment earnings (loss) attributable to PNMR |  |  |  |  |  |  |  |  | 15,640 | 116,254 | 100,507
Total Assets | 6,009,328 |  |  |  | 5,790,237 |  |  |  | 6,009,328 | 5,790,237 | 5,426,858
Goodwill | 278,297 |  |  |  | 278,297 |  |  |  | 278,297 | 278,297 | 278,297
PNM [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Electric Operating Revenues |  |  |  |  |  |  |  |  | 1,131,195 | 1,147,914 | 1,116,312
Cost of energy |  |  |  |  |  |  |  |  | 391,131 | 403,626 | 374,710
Margin |  |  |  |  |  |  |  |  | 740,064 | 744,288 | 741,602
Other operating expenses |  |  |  |  |  |  |  |  | 590,967 | 422,051 | 428,591
Depreciation and amortization |  |  |  |  |  |  |  |  | 115,717 | 109,524 | 103,826
Operating income |  |  |  |  |  |  |  |  | 33,380 | 212,713 | 209,185
Interest income |  |  |  |  |  |  |  |  | 6,574 | 8,557 | 10,182
Other income (deductions) |  |  |  |  |  |  |  |  | 26,914 | 12,258 | 11,288
Interest charges |  |  |  |  |  |  |  |  | (79,950) | (79,442) | (79,175)
Earnings before Income Taxes |  |  |  |  |  |  |  |  | (13,082) | 154,086 | 151,480
Income Taxes |  |  |  |  |  |  |  |  | (12,758) | 52,633 | 48,804
Net Earnings |  |  |  |  |  |  |  |  | (324) | 101,453 | 102,676
Valencia non-controlling interest |  |  |  |  |  |  |  |  | (14,910) | (14,127) | (14,521)
Preferred Stock Dividend Requirements of Subsidiary |  |  |  |  |  |  |  |  | (528) | (528) | (528)
Segment earnings (loss) attributable to PNMR |  |  |  |  |  |  |  |  | (15,762) | 86,798 | 87,627
Total Assets | 4,599,344 |  |  |  | 4,453,114 |  |  |  | 4,599,344 | 4,453,114 | 4,174,261
Goodwill | 51,632 |  |  |  | 51,632 |  |  |  | 51,632 | 51,632 | 51,632
TNMP [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Electric Operating Revenues |  |  |  |  |  |  |  |  | 307,887 | 287,939 | 271,611
Cost of energy |  |  |  |  |  |  |  |  | 73,518 | 67,930 | 57,606
Margin |  |  |  |  |  |  |  |  | 234,369 | 220,009 | 214,005
Other operating expenses |  |  |  |  |  |  |  |  | 88,051 | 84,365 | 91,601
Depreciation and amortization |  |  |  |  |  |  |  |  | 56,285 | 50,056 | 50,219
Operating income |  |  |  |  |  |  |  |  | 90,033 | 85,588 | 72,185
Interest income |  |  |  |  |  |  |  |  | 0 | 0 | 0
Other income (deductions) |  |  |  |  |  |  |  |  | 3,736 | 2,138 | 1,919
Interest charges |  |  |  |  |  |  |  |  | (27,681) | (27,396) | (27,393)
Earnings before Income Taxes |  |  |  |  |  |  |  |  | 66,088 | 60,330 | 46,711
Income Taxes |  |  |  |  |  |  |  |  | 24,125 | 22,523 | 17,621
Net Earnings |  |  |  |  |  |  |  |  | 41,963 | 37,807 | 29,090
Valencia non-controlling interest |  |  |  |  |  |  |  |  | 0 | 0 | 0
Preferred Stock Dividend Requirements of Subsidiary |  |  |  |  |  |  |  |  | 0 | 0 | 0
Segment earnings (loss) attributable to PNMR |  |  |  |  |  |  |  |  | 41,963 | 37,807 | 29,090
Total Assets | 1,297,139 |  |  |  | 1,229,417 |  |  |  | 1,297,139 | 1,229,417 | 1,151,327
Goodwill | 226,665 |  |  |  | 226,665 |  |  |  | 226,665 | 226,665 | 226,665
Corporate and Other [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Electric Operating Revenues |  |  |  |  |  |  |  |  | 0 | 0 | 0
Cost of energy |  |  |  |  |  |  |  |  | 0 | 0 | 0
Margin |  |  |  |  |  |  |  |  | 0 | 0 | 0
Other operating expenses |  |  |  |  |  |  |  |  | (14,854) | (14,450) | (18,308)
Depreciation and amortization |  |  |  |  |  |  |  |  | 13,917 | 13,054 | 12,836
Operating income |  |  |  |  |  |  |  |  | 937 | 1,396 | 5,472
Interest income |  |  |  |  |  |  |  |  | (76) | (74) | (139)
Other income (deductions) |  |  |  |  |  |  |  |  | (485) | (2,302) | (13,575)
Interest charges |  |  |  |  |  |  |  |  | (7,229) | (12,789) | (14,880)
Earnings before Income Taxes |  |  |  |  |  |  |  |  | (6,853) | (13,769) | (23,122)
Income Taxes |  |  |  |  |  |  |  |  | 3,708 | (5,418) | (6,912)
Net Earnings |  |  |  |  |  |  |  |  | (10,561) | (8,351) | (16,210)
Valencia non-controlling interest |  |  |  |  |  |  |  |  | 0 | 0 | 0
Preferred Stock Dividend Requirements of Subsidiary |  |  |  |  |  |  |  |  | 0 | 0 | 0
Segment earnings (loss) attributable to PNMR |  |  |  |  |  |  |  |  | (10,561) | (8,351) | (16,210)
Total Assets | 112,845 |  |  |  | 107,706 |  |  |  | 112,845 | 107,706 | 101,270
Goodwill | $ 0 |  |  |  | $ 0 |  |  |  | $ 0 | $ 0 | $ 0

X
- Definition Aggregate revenues less cost of energy + References No definition available. + Details
Name: | pnm_GrossMargin
Namespace Prefix: | pnm_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Other Income Deductions Excluding Interest + References No definition available. + Details
Name: | pnm_OtherIncomeDeductionsExcludingInterest
Namespace Prefix: | pnm_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Other Operating Expenses + References No definition available. + Details
Name: | pnm_OtherOperatingExpenses
Namespace Prefix: | pnm_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.18) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 12 -Article 7 + Details
Name: | us-gaap_Assets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Total costs related to electricity produced and sold during the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.2(b)) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 + Details
Name: | us-gaap_CostOfGoodsSoldElectric
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Depreciation of property, plant and equipment directly related to services rendered by an entity during the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.2(d)) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 + Details
Name: | us-gaap_CostOfServicesDepreciationAndAmortization
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of paid and unpaid preferred stock dividends declared with the form of settlement in cash, stock and payment-in-kind (PIK). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 405 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6957935&loc=d3e64057-112817 Reference 2: 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 + Details
Name: | us-gaap_DividendsPreferredStock
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The aggregate revenue, whether regulated or unregulated, derived from the generation, transmission and distribution of electricity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1(b)) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 + Details
Name: | us-gaap_ElectricUtilityRevenue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266 + Details
Name: | us-gaap_Goodwill
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition This element represents the income or loss from continuing operations attributable to the economic entity which may also be defined as revenue less expenses from ongoing operations, after income or loss from equity method investments, but before income taxes, extraordinary items, and noncontrolling interest. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 940 -SubTopic 20 -Section 25 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=51673353&loc=d3e41242-110953 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 10 -Article 5 + Details
Name: | us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 9 -Subparagraph (a),(b) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32639-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(h)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Income Tax Expense (or Benefit) -URI http://asc.fasb.org/extlink&oid=6515339 + Details
Name: | us-gaap_IncomeTaxExpenseBenefit
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of the cost of borrowed funds accounted for as interest expense. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6450988&loc=d3e26243-108391 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04.9) -URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882 + Details
Name: | us-gaap_InterestExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount before accretion (amortization) of purchase discount (premium) of interest income on nonoperating securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.7(b)) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 + Details
Name: | us-gaap_InvestmentIncomeInterest
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of Net Income (Loss) attributable to noncontrolling interest. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 55 -Paragraph 4J -URI http://asc.fasb.org/extlink&oid=35736750&loc=SL4591551-111686 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 1A -URI http://asc.fasb.org/extlink&oid=18733093&loc=SL4573702-111684 + Details
Name: | us-gaap_NetIncomeLossAttributableToNoncontrollingInterest
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Net income after adjustments for dividends on preferred stock (declared in the period) and/or cumulative preferred stock (accumulated for the period). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=7655603&loc=d3e1377-109256 + Details
Name: | us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The net result for the period of deducting operating expenses from operating revenues. + References No definition available. + Details
Name: | us-gaap_OperatingIncomeLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 45 -Paragraph 19 -URI http://asc.fasb.org/extlink&oid=51664549&loc=SL4569616-111683 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 55 -Paragraph 4K -URI http://asc.fasb.org/extlink&oid=35736750&loc=SL4591552-111686 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (a),(c) -URI http://asc.fasb.org/extlink&oid=18733093&loc=SL4573702-111684 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 55 -Paragraph 4J -URI http://asc.fasb.org/extlink&oid=35736750&loc=SL4591551-111686 + Details
Name: | us-gaap_ProfitLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_SegmentReportingInformationLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=pnm_PublicServiceCompanyOfNewMexicoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=pnm_TexasNewMexicoPowerCompanyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=us-gaap_CorporateAndOtherMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |