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Commitments and Contingencies (Environmental) (Details) - USD ($) $ in Millions | Jun. 30, 2024 | Dec. 31, 2023
--- | --- | ---
Site Contingency [Line Items] |  |
Accruals for environmental remediation, dismantling, and decontamination, undiscounted | $ 11 | $ 11
Environmental Loss Contingency, Statement of Financial Position [Extensible Enumeration] | Accrued expenses, Other noncurrent liabilities | Accrued expenses, Other noncurrent liabilities
Former TEL Plant Site Louisiana And Houston Texas Plant Site [Member] |  |
Site Contingency [Line Items] |  |
Accruals for environmental remediation, dismantling, and decontamination | $ 9 | $ 9
Accruals for environmental remediation, dismantling, and decontamination, undiscounted | $ 11 | $ 11
Minimum [Member] | Former TEL Plant Site Louisiana And Houston Texas Plant Site [Member] |  |
Site Contingency [Line Items] |  |
Discount rate | 3.00% | 3.00%
Maximum [Member] | Former TEL Plant Site Louisiana And Houston Texas Plant Site [Member] |  |
Site Contingency [Line Items] |  |
Discount rate | 9.00% | 9.00%

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