XML 74 R64.htm IDEA: XBRL DOCUMENT v3.23.2
Derivative Instruments (Details)
 3 Months Ended 6 Months Ended
Jun. 30, 2023
USD ($)
Jun. 30, 2022
USD ($)
Jun. 30, 2023
USD ($)
MWh
Jun. 30, 2022
USD ($)
Dec. 31, 2022
USD ($)
Derivative Instruments and Hedging Activities Disclosures [Line Items]          
Current derivative liability $ 1,700,000   $ 1,700,000   $ 7,100,000
Other Current Liabilities          
Derivative Instruments and Hedging Activities Disclosures [Line Items]          
Derivative liability 1,500,000   1,500,000    
Other Noncurrent Liabilities          
Derivative Instruments and Hedging Activities Disclosures [Line Items]          
Derivative liability 200,000   $ 200,000    
Swap          
Derivative Instruments and Hedging Activities Disclosures [Line Items]          
Notional amount of outstanding swap agreements | MWh     195,400    
Gain (loss) on derivatives, net $ 0 $ 0 $ (16,000,000) $ 2,800,000