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Component: (Network and Table)
Network
2413402 - Disclosure - ASSET RETIREMENT OBLIGATIONS Asset Retirement Obligations Level 4 (Details)
(http://www.idacorpinc.com/role/AssetRetirementObligationsAssetRetirementObligationsLevel4Details)
TableSchedule of Change in Asset Retirement Obligation [Table]
Slicers (applies to each fact value in each table cell)
Reporting Entity [Axis]0001057877 (http://www.sec.gov/CIK)
Asset Retirement Obligations [Axis]Asset Retirement Obligations [Domain]
Asset Retirement Obligations [Line Items]Period [Axis]
2016-01-01 - 2016-12-31
2015-01-01 - 2015-12-31
Asset Retirement Obligation, Roll Forward Analysis
 
 
Asset Retirement Obligation, Beginning Balance
26,153,000  
21,930,000  
Asset Retirement Obligation, Accretion Expense
1,031,000  
993,000  
Asset Retirement Obligation, Revisions in estimated cash flows
1,759,000  
5,043,000  
Asset Retirement Obligation, Liabilities Settled
(2,686,000) 
(1,813,000) 
Asset Retirement Obligation, Ending Balance
26,257,000  
 
26,153,000