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Goodwill | 9 Months Ended
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Sep. 30, 2025
Goodwill and Intangible Assets Disclosure [Abstract] |
Goodwill | Goodwill We test each of our reporting units for goodwill impairment annually at October 1st, or upon a triggering event, in accordance with ASC Topic 350, “Intangibles – Goodwill and Other.” As of January 1, 2025, we reorganized our business into four reportable segments (see Note 16 – Segments for further discussion). This changed the composition of our reporting units which resulted in the reallocation of goodwill from our Advisory Services and Global Workplace Solutions reportable segments to our newly created BOE and Project Management reportable segments as of January 1, 2025. Additionally, the change in composition of our reporting units was considered a triggering event requiring an interim goodwill impairment test as of January 1, 2025. We determined that no impairment existed as the estimated fair values of our reporting units were in excess of their respective carrying values, both before and after the reorganization.
| Advisory Services |  | Global Workplace Solutions |  | Building Operations & Experience |  | Project Management |  | Real Estate Investments |  | Total Consolidated
Balance as of December 31, 2024 (1) | $ | 2,596 |  |  | $ | 2,614 |  |  | $ | — |  |  | $ | — |  |  | $ | 411 |  |  | $ | 5,621 |
Reallocation | (290) |  |  | (2,614) |  |  | 1,578 |  |  | 1,326 |  |  | — |  |  | — |
Acquisitions | 24 |  |  | — |  |  | 566 |  |  | — |  |  | — |  |  | 590 |
Foreign exchange movement | 55 |  |  | — |  |  | 74 |  |  | 49 |  |  | 11 |  |  | 189 |
Balance as of September 30, 2025 | $ | 2,385 |  |  | $ | — |  |  | $ | 2,218 |  |  | $ | 1,375 |  |  | $ | 422 |  |  | $ | 6,400 |
________________________________________________________________________________________________________________________________________ (1) Beginning goodwill balance is presented net of prior accumulated impairment losses of $673 million, $175 million, $89 million, and $183 million related to the Advisory Services, BOE, Project Management, and REI segments, respectively.

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