v3.26.1
Recent Financing Transactions - PAC (Details) - PAC
$ in Millions
 1 Months Ended
Apr. 30, 2026
USD ($)
day
Jun. 30, 2026
USD ($)
Mar. 31, 2026
USD ($)
Feb. 28, 2026
USD ($)
First Mortgage Bonds, 4.65%, Due 2029 | Subsidiary, senior debt        
Debt Instrument [Line Items]        
Debt, face amount     $ 300  
Stated interest rate     4.65%  
First Mortgage Bonds, 5.10%, Due 2031 | Subsidiary, senior debt        
Debt Instrument [Line Items]        
Debt, face amount     $ 550  
Stated interest rate     5.10%  
First Mortgage Bonds, 5.45%, Due 2033 | Subsidiary, senior debt        
Debt Instrument [Line Items]        
Debt, face amount     $ 800  
Stated interest rate     5.45%  
First Mortgage Bonds, 5.80%, Due 2036 | Subsidiary, senior debt        
Debt Instrument [Line Items]        
Debt, face amount     $ 850  
Stated interest rate     5.80%  
First Mortgage Bonds, 4.25%, Due 2029 | Subsidiary, senior debt        
Debt Instrument [Line Items]        
Debt, face amount       $ 400
Stated interest rate       4.25%
Junior Subordinated Debt, 7.125%, Due 2056 | Subsidiary, junior subordinated debt        
Debt Instrument [Line Items]        
Debt, face amount       $ 1,100
Stated interest rate       7.125%
Interest rate reset period       5 years
Unsecured credit facility, PacifiCorp, expiring June 2028 | Line of credit        
Debt Instrument [Line Items]        
Maximum borrowing capacity   $ 2,000    
Unsecured Credit Facility, PacifiCorp, expiring June 2029 | Line of credit        
Debt Instrument [Line Items]        
Maximum borrowing capacity   3,000    
Unsecured credit facility, PacifiCorp, expiring June 2026 | Line of credit        
Debt Instrument [Line Items]        
Maximum borrowing capacity   $ 900    
Letter of Credit Facility, Expiring 2028 | Letter of credit        
Debt Instrument [Line Items]        
Maximum borrowing capacity $ 2,550      
Debt term 2 years      
Termination, threshold trading days | day 91      
Cash collateral, percentage of obligation 103.00%      
Surety Facility | Line of credit        
Debt Instrument [Line Items]        
Maximum borrowing capacity $ 2,550