Cash Tender Offer to Purchase Outstanding Debt

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- Definition

Debt Instrument, Priced As Percent of Face Amount

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- Definition

Debt Instrument, Pricing of Public Offering

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- Definition

Premium On Cash Tender Offer to Purchase Outstanding Debt

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- Definition

Fair value of all asset derivatives designated as cash flow hedging instruments.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 107

-Paragraph 10

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 4B

-Subparagraph (c)(1)

-URI http://asc.fasb.org/extlink&oid=6935481&loc=SL5624163-113959

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- Definition

Fair value of all liability derivatives designated as cash flow hedging instruments.

+ References

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- Definition

Interest rate stated in the contractual debt agreement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.22(a)(1))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- 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.

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- Definition

The cash inflow from a debt initially having maturity due after one year or beyond the operating cycle, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 14

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3255-108585

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 95

-Paragraph 18

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 95

-Paragraph 19

-Subparagraph b

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Financing Activities

-URI http://asc.fasb.org/extlink&oid=6513228

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- Definition

Fair value of financial instrument held by the entity for its own account (proprietary securities) for trading or investment purposes that are carried at fair value and pledged to counterparties as collateral for financing transactions.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 860

-SubTopic 30

-Section 50

-Paragraph 4

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6862952&loc=SL6226653-111729

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 860

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-Section 50

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 140

-Paragraph 17

-Subparagraph a(2)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name FASB Staff Position (FSP)

-Number FAS140-4/FIN46(R)-8

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 5: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 860

-SubTopic 30

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-Paragraph 1

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Capitalization, Financing Activities (Details) (USD $)	9 Months Ended							9 Months Ended		0 Months Ended					0 Months Ended					9 Months Ended
Capitalization, Financing Activities (Details) (USD $)	Sep. 30, 2011	Sep. 30, 2010	Oct. 24, 2011 PNM Resources [Member] Maximum [Member] Repayment of Debt [Member] Unsecured Debt [Member] Senior Unsecured Notes Due 2021 [Member]	Oct. 24, 2011 PNM Resources [Member] Maximum [Member] Repayment of Debt [Member] Unsecured Debt [Member] Senior Unsecured Notes, Series A, Due 2015 [Member]	Sep. 30, 2011 Texas-New Mexico Power Company [Member] Series 2011 Abonds [Member] Secured Debt [Member] Term Loan Agreement 2011 [Member] Commercial Mortgage Backed Securities [Member]	Oct. 06, 2011 Public Service Company of New Mexico [Member] Issuance of Debt [Member] Unsecured Debt [Member] Senior Unsecured Notes Due 2021 [Member]	Oct. 24, 2011 PNM Resources [Member] Repayment of Debt [Member] Unsecured Debt [Member] Senior Unsecured Notes, Series A, Due 2015 [Member]	Sep. 30, 2011 Texas-New Mexico Power Company [Member]	Sep. 30, 2010 Texas-New Mexico Power Company [Member]	Mar. 31, 2009 Texas-New Mexico Power Company [Member] Secured Debt [Member] Term Loan Agreement 2009 [Member]	Sep. 30, 2011 Texas-New Mexico Power Company [Member] Secured Debt [Member] Term Loan Agreement 2009 [Member] Year One to Year Three [Member]	Sep. 30, 2011 Texas-New Mexico Power Company [Member] Secured Debt [Member] Term Loan Agreement 2009 [Member] After Three Years [Member]	Sep. 30, 2011 Texas-New Mexico Power Company [Member] Secured Debt [Member] Term Loan Agreement 2009 [Member] January 2010 to March 2012 [Member]	Sep. 30, 2011 Texas-New Mexico Power Company [Member] Secured Debt [Member] Term Loan Agreement 2009 [Member] After March 2012 [Member]	Sep. 30, 2011 Texas-New Mexico Power Company [Member] Secured Debt [Member] Term Loan Agreement 2011 [Member]	Sep. 30, 2011 Texas-New Mexico Power Company [Member] Secured Debt [Member] Term Loan Agreement 2011 [Member] Year One to Year Two And Half [Member]	Sep. 30, 2011 Texas-New Mexico Power Company [Member] Secured Debt [Member] Term Loan Agreement 2011 [Member] After Two And A Half Years [Member]	Dec. 31, 2010 Texas-New Mexico Power Company [Member] Current Liabilities [Member]	Dec. 31, 2010 Texas-New Mexico Power Company [Member] Deferred Credits and Accumulated Other Comprehensive Income [Member]	Sep. 30, 2011 Public Service Company of New Mexico [Member]	Sep. 30, 2010 Public Service Company of New Mexico [Member]
Debt Instrument [Line Items]
Proceeds from Issuance of Long-term Debt	$ 50,000,000	$ 403,845,000						$ 50,000,000	$ 0	$ 50,000,000					$ 50,000,000					$ 0	$ 403,845,000
Security Owned and Pledged as Collateral, Fair Value					50,000,000
Debt Instrument, Interest Rate, Stated Percentage						5.35%	9.25%				6.05%	6.30%	4.80%	5.05%	3.566%	1.475%	1.985%
Debt Instrument, Priced As Percent of Face Amount						99.857%
Cash Flow Hedge Derivative Instrument Liabilities at Fair Value																		1,900,000	800,000
Cash Flow Hedge Derivative Instrument Assets at Fair Value															0
Debt Instrument, Pricing of Public Offering						160,000,000
Cash Tender Offer to Purchase Outstanding Debt				$ 50,000,000
Premium On Cash Tender Offer to Purchase Outstanding Debt			17.00%