XML 37 R27.htm IDEA: XBRL DOCUMENT v3.22.0.1
Nature of Operations (Details)
item in Millions
1 Months Ended 6 Months Ended 30 Months Ended
Oct. 31, 2021
USD ($)
Sep. 30, 2021
USD ($)
Feb. 28, 2021
USD ($)
item
Sep. 30, 2021
USD ($)
item
Mar. 31, 2024
USD ($)
Conversion of Stock [Line Items]          
Lease term   30 years   30 years  
Lease extension   10 years   10 years  
Forecast [Member]          
Conversion of Stock [Line Items]          
Payments to Acquire Productive Assets         $ 30,000,000.0
Ameren [Member]          
Conversion of Stock [Line Items]          
Number of people | item       7.5  
Lessor Operating Lease Term Of Contract, Combined       40 years  
Lease term   30 years   30 years  
Lease extension   10 years   10 years  
Scheduled prepayments   $ 47,700,000   $ 47,700,000  
Lessor Operating Lease Payments Received   5,400,000 $ 300,000    
Ameren [Member] | Subsequent Event [Member]          
Conversion of Stock [Line Items]          
Lessor Operating Lease Payments Received $ 17,200,000        
SDG&E [Member]          
Conversion of Stock [Line Items]          
Number of people | item     3.6 3.6  
Payments to Acquire Productive Assets     $ 20,000,000.0    
Asset Acquisition, Consideration Transferred     $ 50,000,000.0    
Asset Acquisition, Contingent Consideration, Liability   $ 0   $ 0  
Evergy [Member]          
Conversion of Stock [Line Items]          
Number of people | item       3.9  
Lease term   20 years   20 years  
Lease extension   10 years   10 years  
Scheduled prepayments   $ 30,200,000   $ 30,200,000  
Maximum [Member] | Ameren [Member]          
Conversion of Stock [Line Items]          
Lease term   40 years   40 years  
Maximum [Member] | Evergy [Member]          
Conversion of Stock [Line Items]          
Lease term   40 years   40 years