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Balance Sheet Components Other Current Assets (Details) - USD ($) $ in Millions | Sep. 30, 2023 | Dec. 31, 2022
--- | --- | ---
Other Current Assets [Line Items] |  |
Prepaid expenses | $ 45 | $ 69
Assets from price risk management activities | 74 | 313
Margin deposits | 30 | 116
Other current assets | $ 149 | $ 498

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