XML 104 R1.htm IDEA: XBRL DOCUMENT v2.4.1.9
Document and Entity Information Document (USD $)
 12 Months Ended
Dec. 31, 2014
Feb. 20, 2015
Jun. 30, 2014
Document Information [Line Items]      
Entity Registrant Name PNM RESOURCES INC    
Entity Central Index Key 0001108426    
Current Fiscal Year End Date --12-31    
Entity Filer Category Large Accelerated Filer    
Document Type 10-K    
Document Period End Date Dec. 31, 2014    
Document Fiscal Year Focus 2014    
Document Fiscal Period Focus FY    
Amendment Flag false    
Entity Common Stock, Shares Outstanding   79,653,624dei_EntityCommonStockSharesOutstanding  
Entity Well-known Seasoned Issuer Yes    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Public Float     $ 2,336,240,792dei_EntityPublicFloat
Public Service Company of New Mexico [Member]      
Document Information [Line Items]      
Entity Registrant Name PUBLIC SERVICE CO OF NEW MEXICO    
Entity Central Index Key 0000081023    
Current Fiscal Year End Date --12-31    
Entity Filer Category Non-accelerated Filer    
Document Type 10-K    
Document Period End Date Dec. 31, 2014    
Document Fiscal Year Focus 2014    
Document Fiscal Period Focus FY    
Amendment Flag false    
Entity Common Stock, Shares Outstanding   39,117,799dei_EntityCommonStockSharesOutstanding
/ dei_LegalEntityAxis
= pnm_PublicServiceCompanyOfNewMexicoMember		  
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Texas-New Mexico Power Company [Member]      
Document Information [Line Items]      
Entity Registrant Name TEXAS NEW MEXICO POWER CO    
Entity Central Index Key 0000022767    
Current Fiscal Year End Date --12-31    
Entity Filer Category Non-accelerated Filer    
Document Type 10-K    
Document Period End Date Dec. 31, 2014    
Document Fiscal Year Focus 2014    
Document Fiscal Period Focus FY    
Amendment Flag false    
Entity Common Stock, Shares Outstanding   6,358dei_EntityCommonStockSharesOutstanding
/ dei_LegalEntityAxis
= pnm_TexasNewMexicoPowerCompanyMember		  
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers Yes    
Entity Current Reporting Status No