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Contingent Liabilities (Narrative) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Loss Contingencies [Line Items] |  |  |
Legal fees | $ 26 | $ 17 | $ 14
Pending Litigation | Minimum |  |  |
Loss Contingencies [Line Items] |  |  |
Loss contingency, estimate of possible loss | 0 |  |
Pending Litigation | Maximum |  |  |
Loss Contingencies [Line Items] |  |  |
Loss contingency, estimate of possible loss | $ 202 |  |

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