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Income Taxes - Narrative (Details) - USD ($) $ in Millions |  | 9 Months Ended | 12 Months Ended | 72 Months Ended |
--- | --- | --- | --- | --- | ---
Apr. 01, 2023 | Sep. 30, 2023 | Dec. 31, 2023 | Mar. 31, 2023 | Dec. 31, 2022
Income Taxes [Line Items] |  |  |  |  |
Decrease in valuation allowance |  | $ 3 |  |  |
Valuation allowance |  | $ 2 |  |  | $ 5
Realization assessment period |  | 3 years |  |  |
Foreign Tax Authority |  |  |  |  |
Income Taxes [Line Items] |  |  |  |  |
Corporate tax rate |  | 21.00% |  |  |
United Kingdom |  |  |  |  |
Income Taxes [Line Items] |  |  |  |  |
Corporate tax rate | 25.00% |  |  | 19.00% |
United Kingdom | Subsequent Event |  |  |  |  |
Income Taxes [Line Items] |  |  |  |  |
Corporate tax rate |  |  | 23.50% |  |
France |  |  |  |  |
Income Taxes [Line Items] |  |  |  |  |
Corporate tax rate |  | 25.00% |  |  |

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