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Restructuring Costs (Details) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2024 USD ($) | Mar. 31, 2023 USD ($) employee
Restructuring Cost and Reserve [Line Items] |  |
Positions eliminated | employee |  | 475
Percent of positions eliminated |  | 8.00%
Severance costs | $ 12 | $ 23
Impairment loss |  | 5
Accrued restructuring expense |  | 2
Restructuring costs and asset impairment charge |  | 30
Furniture, fixtures, equipment and other |  |
Restructuring Cost and Reserve [Line Items] |  |
Wrote off of fixed assets |  | $ 1

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