v3.26.1
Derivatives and Risk Management - Schedule of Collateral Outstanding Related to Energy Commodity Derivative Instruments (Details) - Commodity Contracts [Member] - USD ($)
$ in Millions
Jun. 30, 2026
Dec. 31, 2025
Derivative [Line Items]    
Cash collateral posted $ 13 $ 12
Letters of credit outstanding 6 $ 14
Liabilities with credit-risk-related contingent features 25  
Additional collateral to post $ 25