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Contingencies (Shareholder Class Action and Shareholder Derivative Lawsuits) (Details) - USD ($) $ in Millions | 1 Months Ended | 12 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | ---
May 31, 2023 | Apr. 30, 2023 | Oct. 31, 2022 | Dec. 31, 2022 | Dec. 31, 2024 | Dec. 31, 2023 | Mar. 31, 2023 | Dec. 31, 2021
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |
Loss contingency accrual |  |  |  | $ 71 | $ 96 | $ 346 |  | $ 91
Federal And State Shareholder Derivative Lawsuits [Member] |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |
Loss contingency, settlement funding amount |  |  | $ 100 |  |  |  |  |
Loss contingency, settlement funding period | 5 years |  |  |  |  |  |  |
Provision related to litigation recorded |  |  |  | $ 27 |  |  |  |
Loss contingency accrual |  |  |  |  |  |  | $ 100 |
Judgments paid (approximately) |  | $ 15 |  |  |  |  |  |

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