XML 121 R97.htm IDEA: XBRL DOCUMENT v3.25.0.1
Commitments and Contingencies - Certain Resolved Matters (Details) - Settled Litigation - USD ($)
$ in Millions
1 Months Ended 5 Months Ended 7 Months Ended 12 Months Ended
Dec. 31, 2023
May 17, 2023
Dec. 31, 2023
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Talen vs TES, TEC, the TERP, and the TERP committee            
Other Commitments [Line Items]            
Administrative costs related to settlement       $ 6    
Legal settlements and litigation costs       $ 14    
PPL/Talen Montana Litigation            
Other Commitments [Line Items]            
Improper payment $ 733          
Proceeds from legal settlements 115          
Litigation settlement, amount remitted to GUC trust 11          
Litigation settlement, gain         $ 104  
Winter Storm Elliott            
Other Commitments [Line Items]            
Estimated litigation liability 28   $ 28   28  
Litigation settlement, penalty amount   $ 13 2   29 $ 33
Remaining derecognized amount $ 19   $ 19   $ 19