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Document and Entity Information Document - shares
3 Months Ended
Mar. 31, 2016
Apr. 22, 2016
Document Information    
Document Type 10-Q  
Amendment Flag false  
Document Period End Date Mar. 31, 2016  
Document Fiscal Year Focus 2016  
Document Fiscal Period Focus Q1  
Trading Symbol IDA  
Entity Registrant Name IDACORP INC.  
Entity Central Index Key 0001057877  
Current Fiscal Year End Date --12-31  
Entity Filer Category Large Accelerated Filer  
Entity Common Stock, Shares Outstanding   50,415,427
Entity Tax Identification Number 820505802  
Idaho Power Company    
Document Information    
Entity Registrant Name Idaho Power Company  
Entity Central Index Key 0000049648  
Entity Filer Category Non-accelerated Filer  
Entity Common Stock, Shares Outstanding   39,150,812
Entity Tax Identification Number 820130980