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Income Taxes Uncertain tax positions (Details) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items] |  |  |  |
Unrecognized Tax Benefits | $ 11 | $ 13 | $ 6 | $ 9
Tax positions taken in current year | 1 | 1 | 1 |
Tax positions taken in prior years | 0 | 6 | 0 |
Unrecognized Tax Benefits, Reduction Resulting from Lapse of Applicable Statute of Limitations | 0 | 0 | 4 |
Unrecognized Tax Benefits that Would Impact Effective Tax Rate | 11 |  |  |
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued | 0 | 2 |  |
Unrecognized Tax Benefits, Income Tax Penalties and Interest Paid | 0 | 0 |  |
Settlements during the year | $ (3) | $ 0 | $ 0 |

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