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v3.25.1

Revenue from Contracts with Customers (Tables) | 3 Months Ended
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Mar. 31, 2025
Revenue from Contract with Customer [Abstract] |
Schedule of Disaggregation of Revenue from Contracts with Customers | The following tables represent a disaggregation of revenue from contracts with customers by type of service and/or segment (dollars in millions):
| Three Months Ended March 31, 2025
| Advisory Services |  | Building Operations & Experience |  | Project Management |  | Real Estate Investments |  | Corporate, other and eliminations |  | Consolidated
Topic 606 Revenue: |  |  |  |  |  |  |  |  |  |  |
Facilities management | $ | — |  |  | $ | 4,769 |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 4,769 |
Project management | — |  |  | — |  |  | 1,632 |  |  | — |  |  | — |  |  | 1,632 |
Advisory leasing | 862 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 862 |
Advisory sales | 360 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 360 |
Property management | — |  |  | 586 |  |  | — |  |  | — |  |  | (4) |  |  | 582 |
Valuation | 183 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 183 |
Other portfolio services | 81 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 81 |
Commercial mortgage origination (1) | 43 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 43 |
Loan servicing (2) | 23 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 23 |
Investment management | — |  |  | — |  |  | — |  |  | 154 |  |  | — |  |  | 154 |
Development services | — |  |  | — |  |  | — |  |  | 74 |  |  | — |  |  | 74 |
Topic 606 Revenue | 1,552 |  |  | 5,355 |  |  | 1,632 |  |  | 228 |  |  | (4) |  |  | 8,763 |
Out of Scope of Topic 606 Revenue: |  |  |  |  |  |  |  |  |  |  |
Commercial mortgage origination | 45 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 45 |
Loan servicing | 97 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 97 |
Development services (3) | — |  |  | — |  |  | — |  |  | 5 |  |  | — |  |  | 5 |
Total Out of Scope of Topic 606 Revenue | 142 |  |  | — |  |  | — |  |  | 5 |  |  | — |  |  | 147 |
Total Revenue | $ | 1,694 |  |  | $ | 5,355 |  |  | $ | 1,632 |  |  | $ | 233 |  |  | $ | (4) |  |  | $ | 8,910 |
| Three Months Ended March 31, 2024
| Advisory Services |  | Building Operations & Experience |  | Project Management |  | Real Estate Investments |  | Corporate, other and eliminations |  | Consolidated
Topic 606 Revenue: |  |  |  |  |  |  |  |  |  |  |
Facilities management | $ | — |  |  | $ | 4,266 |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 4,266 |
Project management | — |  |  | — |  |  | 1,519 |  |  | — |  |  | — |  |  | 1,519 |
Advisory leasing | 733 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 733 |
Advisory sales | 325 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 325 |
Property management | — |  |  | 434 |  |  | — |  |  | — |  |  | (6) |  |  | 428 |
Valuation | 167 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 167 |
Other portfolio services | 93 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 93 |
Commercial mortgage origination (1) | 30 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 30 |
Loan servicing (2) | 35 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 35 |
Investment management | — |  |  | — |  |  | — |  |  | 149 |  |  | — |  |  | 149 |
Development services | — |  |  | — |  |  | — |  |  | 77 |  |  | — |  |  | 77 |
Topic 606 Revenue | 1,383 |  |  | 4,700 |  |  | 1,519 |  |  | 226 |  |  | (6) |  |  | 7,822 |
Out of Scope of Topic 606 Revenue: |  |  |  |  |  |  |  |  |  |  |
Commercial mortgage origination | 28 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 28 |
Loan servicing | 83 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 83 |
Development services (3) | — |  |  | — |  |  | — |  |  | 2 |  |  | — |  |  | 2 |
Total Out of Scope of Topic 606 Revenue | 111 |  |  | — |  |  | — |  |  | 2 |  |  | — |  |  | 113 |
Total Revenue | $ | 1,494 |  |  | $ | 4,700 |  |  | $ | 1,519 |  |  | $ | 228 |  |  | $ | (6) |  |  | $ | 7,935 |

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- Definition Tabular disclosure of disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479806/606-10-50-5 + Details
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