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Contingencies (Antitrust Litigation and Shareholder Class Action and Shareholder Derivative Lawsuits) (Details) $ in Millions | 1 Months Ended | 12 Months Ended |  |  |  |  |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
May 31, 2023 USD ($) | Apr. 30, 2023 USD ($) | Dec. 31, 2022 USD ($) | Oct. 27, 2025 lawsuit | Sep. 30, 2025 USD ($) | Jun. 30, 2025 USD ($) | Dec. 31, 2024 USD ($) | Sep. 30, 2024 USD ($) | Jun. 30, 2024 USD ($) | Dec. 31, 2023 USD ($) | Mar. 31, 2023 USD ($) | Nov. 30, 2020 complaint
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Loss contingency, number of complaints | complaint |  |  |  |  |  |  |  |  |  |  |  | 3
Pre-tax charge |  |  |  |  | $ 68 | $ 95 | $ 96 | $ 136 | $ 151 | $ 346 |  |
Subsequent Event [Member] |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Loss contingency, class action lawsuit | lawsuit |  |  |  | 17 |  |  |  |  |  |  |  |
Federal And State Shareholder Derivative Lawsuits [Member] |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Loss contingency accrual, provision |  |  | $ 27 |  |  |  |  |  |  |  |  |
Loss contingency, settlement funding amount | $ 100 |  |  |  |  |  |  |  |  |  |  |
Loss contingency, settlement funding period | 5 years |  |  |  |  |  |  |  |  |  |  |
Pre-tax charge |  |  |  |  |  |  |  |  |  |  | $ 100 |
Judgments paid |  | $ 15 |  |  |  |  |  |  |  |  |  |

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