XML 65 R42.htm IDEA: XBRL DOCUMENT v3.19.1

Electric Operating Revenues - Disaggregation of revenues (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers	$ 315,698	$ 303,351
Revenues	349,645	317,878
PNM
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers	235,941	222,564
Revenues	269,318	236,232
TNMP
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers	79,757	80,787
Revenues	80,327	81,646
Residential
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers	137,734	126,435
Residential | PNM
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers	107,302	97,169
Residential | TNMP
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers	30,432	29,266
Commercial
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers	112,662	110,001
Commercial | PNM
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers	85,233	82,849
Commercial | TNMP
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers	27,429	27,152
Industrial
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers	20,363	17,764
Industrial | PNM
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers	14,747	13,459
Industrial | TNMP
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers	5,616	4,305
Public authority
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers	6,085	6,051
Public authority | PNM
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers	4,711	4,635
Public authority | TNMP
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers	1,374	1,416
Economy energy service
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers	6,922	7,288
Economy energy service | PNM
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers	6,922	7,288
Economy energy service | TNMP
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers	0	0
Transmission
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers	27,388	28,990
Transmission | PNM
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers	13,385	12,482
Transmission | TNMP
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers	14,003	16,508
Miscellaneous
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers	4,544	6,822
Miscellaneous | PNM
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers	3,641	4,682
Miscellaneous | TNMP
Disaggregation of Revenue [Line Items]
Total revenues from contracts with customers	903	2,140
Alternative revenue programs
Disaggregation of Revenue [Line Items]
Revenues	636	924
Alternative revenue programs | PNM
Disaggregation of Revenue [Line Items]
Revenues	66	65
Alternative revenue programs | TNMP
Disaggregation of Revenue [Line Items]
Revenues	570	859
Other electric operating revenues
Disaggregation of Revenue [Line Items]
Revenues	33,311	13,603
Other electric operating revenues | PNM
Disaggregation of Revenue [Line Items]
Revenues	33,311	13,603
Other electric operating revenues | TNMP
Disaggregation of Revenue [Line Items]
Revenues	$ 0	$ 0

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_DisaggregationOfRevenueLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130543-203045

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130539-203045

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130545-203045

+ Details

Name:	us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 22
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1)
-URI http://asc.fasb.org/extlink&oid=115205541&loc=SL114868664-224227

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 32
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8933-108599

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 22
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599

+ Details

Name:	us-gaap_Revenues
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Details

Name:	dei_LegalEntityAxis=pnm_PublicServiceCompanyOfNewMexicoMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	dei_LegalEntityAxis=pnm_TexasNewMexicoPowerCompanyMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_ProductOrServiceAxis=pnm_ResidentialElectricMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_ProductOrServiceAxis=pnm_CommercialElectricMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_ProductOrServiceAxis=pnm_IndustrialElectricMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_ProductOrServiceAxis=pnm_PublicAuthorityElectricMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_ProductOrServiceAxis=pnm_EconomyEnergyServiceElectricMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_ProductOrServiceAxis=pnm_ElectricTransmissionRevenueMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_ProductOrServiceAxis=pnm_MiscellaneousRevenueFromContractsWithCustomersMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_ProductOrServiceAxis=us-gaap_AlternativeEnergyMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_ProductOrServiceAxis=pnm_OtherElectricMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: