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Share-Based Compensation - Narrative (Details) - USD ($) shares in Millions, $ in Millions | 1 Months Ended | 3 Months Ended | 9 Months Ended
--- | --- | --- | ---
Feb. 29, 2024 | Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2024 | Sep. 30, 2023
Class of Stock [Line Items] |  |  |  |  |
Stock-based compensation |  | $ 57 | $ 79 | $ 171 | $ 164
Performance Based Restricted Stock Units |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Award vesting period | 3 years |  |  |  |
Unrecognized compensation expense | $ 48 | 37 |  | 37 |
Target reserved (in shares) | 0.4 |  |  |  |
Stock-based compensation |  | 8 |  | 22 |
Amount of non-cash compensation remaining in fiscal period |  | 9 |  | $ 9 |
Minimum | Restricted stock |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Award vesting period |  |  |  | 3 years |
Maximum | Performance Based Restricted Stock Units |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Shares reserved for future issuance (in shares) | 0.7 |  |  |  |
Unrecognized compensation expense | $ 95 |  |  |  |
Maximum | Restricted stock |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Award vesting period |  |  |  | 4 years |
Acquisition-Related Transaction and Integration Costs |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Stock-based compensation |  | $ 4 |  | $ 14 |

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