XML 68 R29.htm IDEA: XBRL DOCUMENT
v2.4.0.6

New Accounting Pronouncements | 12 Months Ended
--- | ---
Dec. 31, 2011
New Accounting Pronouncements [Abstract] |
New Accounting Pronouncements | New Accounting Pronouncements Information concerning recently issued accounting pronouncements that have not been adopted by the Company and could have a material impact, is presented below. Accounting Standards Update 2011-04 - Fair Value Measurement: Amendments to Achieve Common Fair Value Measurement and Disclosure Requirements in U.S. GAAP and IFRSs The FASB released amended guidance to provide a consistent definition of fair value and to ensure fair value measurement and disclosure requirements are similar between GAAP and International Financial Reporting Standards. The update changes certain fair value measurement principles, further enhances disclosure requirements related to transfers between hierarchy levels, and increases qualitative disclosures regarding unobservable inputs used in Level 3 measurements, including the sensitivity of recurring Level 3 measurements to changes in significant unobservable inputs. In addition, the update requires disclosure of the level within the fair value hierarchy for fair value disclosures of instruments recorded on an amortized cost basis. The update is required to be applied prospectively and is effective for interim and annual reporting periods beginning on or after December 15, 2011, with early adoption prohibited. The Company does not believe this guidance will have a material impact on the Company's financial statements and will comply with this requirement upon its effective date. Accounting Standards Update 2011-08 - Intangibles-Goodwill and Other: Testing Goodwill for Impairment The FASB released amended guidance that is intended to simplify requirements to test goodwill for impairment. Under the amended guidance, an entity will have the option to first assess qualitative factors to determine whether the existence of events or circumstances leads to a determination that it is more likely than not that the fair value of a reporting unit is less that its carrying amount. If an entity determines it is more likely than not that the fair value of a reporting unit is greater than its carrying amount, then performing the two-step impairment test will not be necessary. However, if an entity is unable to make this conclusion, then it will be required to perform the first step of the two-step impairment test by calculating the fair value of the reporting unit and comparing the fair value with the carrying amount of the reporting unit, as required by current guidance. The update is effective for annual and interim goodwill impairment tests performed for fiscal years beginning after December 15, 2011, with early adoption permitted. The Company is currently evaluating the impacts of this new standard and will apply it in 2012. Accounting Standards Update 2011-11 - Balance Sheet: Disclosures about Offsetting Assets and Liabilities The FASB released amended guidance that will require entities to disclose both gross and net information about instruments and transactions eligible for offset in the statement of financial position as well as instruments and transactions subject to an agreement similar to a master netting arrangement. In addition, the update requires disclosure of collateral received and posted in connection with master netting agreements or similar agreements. The update is effective for annual reporting periods beginning on or after January 1, 2013, and interim periods therein. The disclosures required by this amendment will be applied retrospectively for all comparative periods presented. The Company is currently evaluating the impacts of this new standard.

X
- Details
Name: | pnm_NewAccountingPronouncementsAbstract
Namespace Prefix: | pnm_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The entire disclosure for a new accounting pronouncement that has been issued but not yet adopted. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 11 -Section M Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 250 -SubTopic 10 -Section S99 -Paragraph 5 -Subparagraph (SAB TOPIC 11.M) -URI http://asc.fasb.org/extlink&oid=6369664&loc=d3e31137-122693 + Details
Name: | us-gaap_DescriptionOfNewAccountingPronouncementsNotYetAdopted
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration