XML 58 R47.htm IDEA: XBRL DOCUMENT v3.25.3
Fair Value of Financial Instruments - Schedule of Fair Value, Assets and Liabilities (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Dec. 31, 2024
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Derivative Assets $ 135   $ 135   $ 175
Derivative Liabilities 374   374   371
El Segundo, Marsh Landing and Walnut Creek Notes | Call Option          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Fair value of long term debt 336   336   366
Fair value of short term debt 0   0   5
Fair Value, Recurring          
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]          
Beginning balance (345) $ (381) (352) $ (317)  
Settlements 44 6 84 0  
Total (losses) gains for the period included in earnings (16) 66 (49) 8  
Ending balance (317) (309) (317) (309)  
Change in unrealized losses included in earnings for derivatives and other financial instruments held as of September 30, 2025 $ (16) $ (49)  
Fair Value, Net Derivative Asset (Liability), Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Derivative instruments Derivative instruments Derivative instruments Derivative instruments  
Level 2 | Fair Value, Recurring          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Derivative Assets $ 123   $ 123   166
Derivative Liabilities 38   38   0
Level 3 | Fair Value, Recurring          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Derivative Assets 19   19   19
Derivative Liabilities 336   336   371
Energy-related commodity contracts          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Derivative Assets 12   12   9
Derivative Liabilities 337   337   371
Energy-related commodity contracts | Level 2 | Fair Value, Recurring          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Derivative Assets 0   0   0
Derivative Liabilities 1   1   0
Energy-related commodity contracts | Level 3 | Fair Value, Recurring          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Derivative Assets 12   12   9
Derivative Liabilities 336   336   371
Interest rate contracts          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Derivative Assets 123   123   166
Derivative Liabilities 37   37    
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]          
Change in unrealized losses included in earnings for derivatives and other financial instruments held as of September 30, 2025 (8) $ (57) (40) $ (33)  
Interest rate contracts | Level 2 | Fair Value, Recurring          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Derivative Assets 123   123   166
Derivative Liabilities 37   37   0
Interest rate contracts | Level 3 | Fair Value, Recurring          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Derivative Assets 0   0   0
Derivative Liabilities 0   0   0
Other Financial Instruments | Level 2 | Fair Value, Recurring          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Derivative Assets 0   0   0
Other Financial Instruments | Level 3 | Fair Value, Recurring          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Derivative Assets $ 7   $ 7   $ 10