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Supplementary Financial Information - Schedule of Other Noncurrent Liabilities and Deferred Credits (Details) - USD ($) $ in Millions | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Asset Retirement Obligations [Line Items] |  |
Retirement and other employee benefits | $ 247 | $ 237
Winter Storm Uri impacts | 26 | 35
Finite-lived intangible liabilities, net | 131 | 140
Regulatory liabilities | 209 | 0
Finance lease liabilities | 227 | 237
Uncertain tax positions, including accrued interest | 0 | 13
Liability for third-party remediation | 17 | 37
Accrued severance costs | 36 | 36
Other accrued expenses | 58 | 269
Total other noncurrent liabilities and deferred credits | 951 | 1,004
Nuclear Plant Decommissioning |  |
Asset Retirement Obligations [Line Items] |  |
Regulatory liabilities | $ 209 |
Regulatory asset |  | $ 40

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