Quarterly report [Sections 13 or 15(d)]

Derivative Instruments - Narrative (Details)

v3.25.3
Derivative Instruments - Narrative (Details)
$ in Millions
9 Months Ended
Sep. 30, 2025
USD ($)
tbtu
Dec. 31, 2024
USD ($)
tbtu
Derivative Instruments and Hedging Activities Disclosures [Line Items]    
Derivative, Nonmonetary Notional Amount | tbtu 5,283 5,500
Derivative, collateral not netted | $ $ 14 $ 13
Maximum [Member]    
Derivative Instruments and Hedging Activities Disclosures [Line Items]    
Derivative, Term of Contract 15 years