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Restructuring - Additional Information (Details) - USD ($) $ in Millions | 3 Months Ended | 15 Months Ended
--- | --- | ---
Mar. 31, 2024 | Mar. 31, 2023 | Mar. 31, 2024
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring charges | $ 26 | $ 38 |
Total charges from inception of Plans | 111 |  |
Total charges | 151 |  | $ 151
Severance and termination costs |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Total charges | 106 |  | 106
Realignment Plan |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring charges | 22 | 0 |
Total charges | 22 |  | 22
Realignment Plan | Severance and termination costs |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Total charges | 22 |  | 22
Realignment Plan | Other Restructuring |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Estimated aggregate restructuring charges | 4 |  | 4
Realignment Plan | Minimum |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Estimated aggregate restructuring charges | 75 |  | 75
Realignment Plan | Minimum | Severance and termination costs |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Estimated aggregate restructuring charges | 60 |  | 60
Realignment Plan | Minimum | Office Space Reductions |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Estimated aggregate restructuring charges | 11 |  | 11
Realignment Plan | Maximum |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Estimated aggregate restructuring charges | 90 |  | 90
Realignment Plan | Maximum | Severance and termination costs |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Estimated aggregate restructuring charges | 70 |  | 70
Realignment Plan | Maximum | Office Space Reductions |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Estimated aggregate restructuring charges | 16 |  | 16
Network Optimization Project |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring charges | 3 |  |
Total charges from inception of Plans |  |  | 10
Restructuring and related cost, incurred cost | 2 |  |
Total charges | 28 |  | 28
Network Optimization Project | Severance and termination costs |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Total charges | 7 |  | 7
Network Optimization Project | Minimum |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Estimated aggregate restructuring charges | 37 |  | 37
Expected cash payments | 35 |  |
Network Optimization Project | Minimum | Severance and termination costs |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Estimated aggregate restructuring charges | 8 |  | 8
Network Optimization Project | Minimum | Industrial Site Reductions |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Estimated aggregate restructuring charges | 29 |  | 29
Network Optimization Project | Maximum |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Estimated aggregate restructuring charges | 49 |  | 49
Expected cash payments | 44 |  |
Network Optimization Project | Maximum | Severance and termination costs |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Estimated aggregate restructuring charges | 11 |  | 11
Network Optimization Project | Maximum | Industrial Site Reductions |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Estimated aggregate restructuring charges | 38 |  | 38
Project Phoenix |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring charges | 1 | 36 |
Total charges from inception of Plans | 79 |  |
Restructuring and related cost, incurred cost | 3 | 6 |
Total charges | 101 |  | 101
Project Phoenix | Severance and termination costs |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Total charges | 77 |  | 77
Project Phoenix | Other Restructuring |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring charges | 5 |  |
Project Phoenix | Minimum |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Estimated aggregate restructuring charges | 100 |  | 100
Expected cash payments | 95 |  |
Project Phoenix | Minimum | Severance and termination costs |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Estimated aggregate restructuring charges | 80 |  | 80
Project Phoenix | Minimum | Office Space Reductions |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Estimated aggregate restructuring charges | 15 |  | 15
Project Phoenix | Maximum |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Estimated aggregate restructuring charges | 130 |  | 130
Expected cash payments | 120 |  |
Project Phoenix | Maximum | Severance and termination costs |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Estimated aggregate restructuring charges | 105 |  | 105
Project Phoenix | Maximum | Office Space Reductions |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Estimated aggregate restructuring charges | 20 |  | $ 20
Restructuring-related charges |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring charges | 8 | 7 |
Other restructuring charges | $ 0 | $ 2 |

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