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Restructuring and Related Activities (Tables) | 9 Months Ended
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Sep. 30, 2025
Restructuring and Related Activities [Abstract] |
Restructuring and Related Costs | The following tables summarize the activities related to the 2023 Restructuring Plan for the three and nine months ended September 30, 2025 and 2024:
| Three Months Ended September 30, 2025 |  | Nine Months Ended September 30, 2025
| Employee Headcount Reduction |  | Office Space Consolidation |  | Total |  | Employee Headcount Reduction |  | Office Space Consolidation |  | Total
Liability as of the beginning of the respective period | $ | 1 |  |  | $ | 3 |  |  | $ | 4 |  |  | $ | 2 |  |  | $ | 5 |  |  | $ | 7 |
Charges (credits) | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |
Payments | — |  |  | — |  |  | — |  |  | (1) |  |  | (2) |  |  | (3) |
Non-cash items | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |
Liability as of September 30, 2025 | $ | 1 |  |  | $ | 3 |  |  | $ | 4 |  |  | $ | 1 |  |  | $ | 3 |  |  | $ | 4 |
| Three Months Ended September 30, 2024 |  | Nine Months Ended September 30, 2024
| Employee Headcount Reduction |  | Office Space Consolidation |  | Total |  | Employee Headcount Reduction |  | Office Space Consolidation |  | Total
Liability as of the beginning of the respective period | $ | 4 |  |  | $ | 11 |  |  | $ | 15 |  |  | $ | 12 |  |  | $ | 11 |  |  | $ | 23 |
Charges (credits) | (2) |  |  | — |  |  | (2) |  |  | — |  |  | 11 |  |  | 11 |
Payments | — |  |  | (3) |  |  | (3) |  |  | (10) |  |  | (10) |  |  | (20) |
Non-cash items | — |  |  | — |  |  | — |  |  | — |  |  | (4) |  |  | (4) |
Liability as of September 30, 2024 | $ | 2 |  |  | $ | 8 |  |  | $ | 10 |  |  | $ | 2 |  |  | $ | 8 |  |  | $ | 10 |
2024 Restructuring and Related Costs | The following table summarizes the activities related to the 2024 Restructuring Plan for the three and nine months ended September 30, 2025 and 2024:
| Three Months Ended September 30, 2025 |  | Nine Months Ended September 30, 2025 |  |
| Employee Headcount Reduction |  | Office Space Consolidation |  | Total |  | Employee Headcount Reduction |  | Office Space Consolidation |  | Total |  |  |  |  |  |
Liability as of the beginning of the respective period | $ | — |  |  | $ | 26 |  |  | $ | 26 |  |  | $ | 2 |  |  | $ | 34 |  |  | $ | 36 |  |  |  |  |  |  |
Charges (credits) | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  |  |  |  |  |
Payments | — |  |  | (3) |  |  | (3) |  |  | (2) |  |  | (11) |  |  | (13) |  |  |  |  |  |  |
Non-cash items | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  |  |  |  |  |
Liability as of September 30, 2025 | $ | — |  |  | $ | 23 |  |  | $ | 23 |  |  | $ | — |  |  | $ | 23 |  |  | $ | 23 |  |  |  |  |  |  |
| Three Months Ended September 30, 2024 |  | Nine Months Ended September 30, 2024
| Employee Headcount Reduction |  | Office Space Consolidation |  | Total |  | Employee Headcount Reduction |  | Office Space Consolidation |  | Total
Liability as of the beginning of the respective period | $ | 7 |  |  | $ | — |  |  | $ | 7 |  |  | $ | — |  |  | $ | — |  |  | — |
Charges (credits) | (3) |  |  | 43 |  |  | 40 |  |  | 6 |  |  | 50 |  |  | 56 |
Payments | (6) |  |  | (2) |  |  | (8) |  |  | (9) |  |  | (2) |  |  | (11) |
Non-cash items | 3 |  |  | (4) |  |  | (1) |  |  | 4 |  |  | (11) |  |  | (7) |
Liability as of September 30, 2024 | $ | 1 |  |  | $ | 37 |  |  | $ | 38 |  |  | $ | 1 |  |  | $ | 37 |  |  | $ | 38 |

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- Definition Tabular disclosure of costs incurred for restructuring including, but not limited to, exit and disposal activities, remediation, implementation, integration, asset impairment, and charges against earnings from the write-down of assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 420 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 5.P.3) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479823/420-10-S99-1 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 420 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Subparagraph (SAB Topic 5.P.4) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479823/420-10-S99-2 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482017/420-10-50-1 + Details
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