XML 92 R76.htm IDEA: XBRL DOCUMENT v3.25.3

Financing - Schedule of Forward Contracts (Details) - USD ($) $ / shares in Units, $ in Thousands									3 Months Ended	9 Months Ended
	Aug. 26, 2025	Aug. 25, 2025	Aug. 22, 2025	Aug. 21, 2025	Aug. 20, 2025	Aug. 19, 2025	Aug. 18, 2025	Aug. 15, 2025	Sep. 30, 2024	Sep. 30, 2025
Forward Contract Indexed to Issuer's Equity [Line Items]
Forward contracts, issuance costs								$ 2,000
Forward contracts, net cash proceeds								$ 198,000
Settlement shares (in shares)									2,196,926	3,542,377
Settlement amount										$ 200,000
Bank Of America, N.A.
Forward Contract Indexed to Issuer's Equity [Line Items]
Settlement shares (in shares)					1,000,000	18,500	209,990
Settlement price (in dollars per share)					$ 56.41	$ 56.83	$ 56.75
Settlement amount					$ 56,410	$ 1,051	$ 11,917
Bank Of America, N.A.
Forward Contract Indexed to Issuer's Equity [Line Items]
Settlement shares (in shares)						200,000
Settlement price (in dollars per share)						$ 56.51
Settlement amount						$ 11,302
Bank Of America, N.A
Forward Contract Indexed to Issuer's Equity [Line Items]
Settlement shares (in shares)						200,000
Settlement price (in dollars per share)						$ 56.41
Settlement amount						$ 11,282
MUFG Securities EMEA plc
Forward Contract Indexed to Issuer's Equity [Line Items]
Settlement shares (in shares)				64,016
Settlement price (in dollars per share)				$ 56.57
Settlement amount				$ 3,621
MUFG Securities EMEA plc
Forward Contract Indexed to Issuer's Equity [Line Items]
Settlement shares (in shares)				1,500,000
Settlement price (in dollars per share)				$ 56.40
Settlement amount				$ 84,600
The Bank of Nova Scotia
Forward Contract Indexed to Issuer's Equity [Line Items]
Settlement shares (in shares)		41,408	135,327
Settlement price (in dollars per share)		$ 56.60	$ 56.58
Settlement amount		$ 2,344	$ 7,657
Royal Bank of Canada
Forward Contract Indexed to Issuer's Equity [Line Items]
Settlement shares (in shares)	54,317	118,819
Settlement price (in dollars per share)	$ 56.64	$ 56.73
Settlement amount	$ 3,076	$ 6,740

X

- Definition

Forward Contracts, Issuance Costs

+ References

No definition available.

+ Details

Name:	pnm_ForwardContractsIssuanceCosts
Namespace Prefix:	pnm_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Fair value of shares that would be issued upon settlement of forward contract indexed to equity.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 815
-SubTopic 40
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480237/815-40-50-5

+ Details

Name:	us-gaap_ForwardContractIndexedToEquitySettlementShareFairValue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Fair value per share that would be issued upon settlement of forward contract indexed to equity.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 815
-SubTopic 40
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480237/815-40-50-5

+ Details

Name:	us-gaap_ForwardContractIndexedToEquitySettlementShareFairValuePerShare
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	instant

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

X

- Definition

Amount that would be paid upon settlement of forward contract indexed to equity.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Subparagraph (d)
-SubTopic 40
-Topic 815
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480237/815-40-50-5

+ Details

Name:	us-gaap_ForwardContractIndexedToIssuersEquitySettlementAlternativesCashAtFairValue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Maximum number of shares that could be issued to settle forward contract indexed to equity.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 815
-SubTopic 40
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Subparagraph (b)(2)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480237/815-40-50-5

+ Details

Name:	us-gaap_ForwardContractIndexedToIssuersEquityShares
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	srt_CounterpartyNameAxis=pnm_BankOfAmericaN.A.AMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_CounterpartyNameAxis=pnm_BankOfAmericaN.A.BMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_CounterpartyNameAxis=pnm_BankOfAmericaN.A.CMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_CounterpartyNameAxis=pnm_MUFGSecuritiesEMEAPlcAMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_CounterpartyNameAxis=pnm_MUFGSecuritiesEMEAPlcBMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_CounterpartyNameAxis=pnm_TheBankOfNovaScotiaMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_CounterpartyNameAxis=pnm_RoyalBankOfCanadaMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: