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Derivatives and Risk Management Activities - Broker Receivable (Details) - USD ($) $ in Millions | Jun. 30, 2026 | Dec. 31, 2025
--- | --- | ---
Derivative assets and liabilities |  |
Initial margin | $ 31 | $ 16
Variation margin posted | 31 | 4
Letters of credit | (63) | (95)
Net broker receivable | 33 | 19
Exchange Traded |  |
Derivative assets and liabilities |  |
Letters of credit | $ (29) | $ (1)

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