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v3.25.1

Revenue from Contracts with Customers - Schedule of Disaggregation of Revenue from Contracts with Customers (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2025 | Mar. 31, 2024
Disaggregation of Revenue [Line Items] |  |
Topic 606 Revenue | $ 8,763 | $ 7,822
Total Out of Scope of Topic 606 Revenue | 147 | 113
Total Revenue | 8,910 | 7,935
Facilities management |  |
Disaggregation of Revenue [Line Items] |  |
Topic 606 Revenue | 4,769 | 4,266
Project management |  |
Disaggregation of Revenue [Line Items] |  |
Topic 606 Revenue | 1,632 | 1,519
Advisory leasing |  |
Disaggregation of Revenue [Line Items] |  |
Topic 606 Revenue | 862 | 733
Advisory sales |  |
Disaggregation of Revenue [Line Items] |  |
Topic 606 Revenue | 360 | 325
Property management |  |
Disaggregation of Revenue [Line Items] |  |
Topic 606 Revenue | 582 | 428
Other portfolio services |  |
Disaggregation of Revenue [Line Items] |  |
Topic 606 Revenue | 81 | 93
Valuation |  |
Disaggregation of Revenue [Line Items] |  |
Topic 606 Revenue | 183 | 167
Commercial mortgage origination |  |
Disaggregation of Revenue [Line Items] |  |
Topic 606 Revenue | 43 | 30
Total Out of Scope of Topic 606 Revenue | 45 | 28
Loan servicing |  |
Disaggregation of Revenue [Line Items] |  |
Topic 606 Revenue | 23 | 35
Total Out of Scope of Topic 606 Revenue | 97 | 83
Investment management |  |
Disaggregation of Revenue [Line Items] |  |
Topic 606 Revenue | 154 | 149
Development services |  |
Disaggregation of Revenue [Line Items] |  |
Topic 606 Revenue | 74 | 77
Total Out of Scope of Topic 606 Revenue | 5 | 2
Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenue | 8,910 | 7,935
Operating Segments | Advisory Services |  |
Disaggregation of Revenue [Line Items] |  |
Topic 606 Revenue | 1,552 | 1,383
Total Out of Scope of Topic 606 Revenue | 142 | 111
Total Revenue | 1,694 | 1,494
Operating Segments | Building Operations & Experience |  |
Disaggregation of Revenue [Line Items] |  |
Topic 606 Revenue | 5,355 | 4,700
Total Out of Scope of Topic 606 Revenue | 0 | 0
Total Revenue | 5,355 | 4,700
Operating Segments | Project Management |  |
Disaggregation of Revenue [Line Items] |  |
Topic 606 Revenue | 1,632 | 1,519
Total Revenue | 1,632 | 1,519
Operating Segments | Real Estate Investments |  |
Disaggregation of Revenue [Line Items] |  |
Topic 606 Revenue | 228 | 226
Total Out of Scope of Topic 606 Revenue | 5 | 2
Total Revenue | 233 | 228
Operating Segments | Facilities management | Building Operations & Experience |  |
Disaggregation of Revenue [Line Items] |  |
Topic 606 Revenue | 4,769 | 4,266
Operating Segments | Facilities management | Project Management |  |
Disaggregation of Revenue [Line Items] |  |
Topic 606 Revenue | 0 | 0
Operating Segments | Project management | Building Operations & Experience |  |
Disaggregation of Revenue [Line Items] |  |
Topic 606 Revenue | 0 | 0
Operating Segments | Project management | Project Management |  |
Disaggregation of Revenue [Line Items] |  |
Topic 606 Revenue | 1,632 | 1,519
Operating Segments | Advisory leasing | Advisory Services |  |
Disaggregation of Revenue [Line Items] |  |
Topic 606 Revenue | 862 | 733
Operating Segments | Advisory sales | Advisory Services |  |
Disaggregation of Revenue [Line Items] |  |
Topic 606 Revenue | 360 | 325
Operating Segments | Property management | Advisory Services |  |
Disaggregation of Revenue [Line Items] |  |
Topic 606 Revenue | 0 | 0
Operating Segments | Property management | Building Operations & Experience |  |
Disaggregation of Revenue [Line Items] |  |
Topic 606 Revenue |  | 434
Operating Segments | Other portfolio services | Advisory Services |  |
Disaggregation of Revenue [Line Items] |  |
Topic 606 Revenue | 81 | 93
Operating Segments | Valuation | Advisory Services |  |
Disaggregation of Revenue [Line Items] |  |
Topic 606 Revenue | 183 | 167
Operating Segments | Commercial mortgage origination | Advisory Services |  |
Disaggregation of Revenue [Line Items] |  |
Topic 606 Revenue | 43 | 30
Total Out of Scope of Topic 606 Revenue | 45 | 28
Operating Segments | Loan servicing | Advisory Services |  |
Disaggregation of Revenue [Line Items] |  |
Topic 606 Revenue | 23 | 35
Total Out of Scope of Topic 606 Revenue | 97 | 83
Operating Segments | Investment management | Real Estate Investments |  |
Disaggregation of Revenue [Line Items] |  |
Topic 606 Revenue | 154 | 149
Operating Segments | Development services | Real Estate Investments |  |
Disaggregation of Revenue [Line Items] |  |
Topic 606 Revenue | 74 | 77
Total Out of Scope of Topic 606 Revenue | 5 | 2
Corporate, other and eliminations |  |
Disaggregation of Revenue [Line Items] |  |
Topic 606 Revenue | (4) | (6)
Total Out of Scope of Topic 606 Revenue | 0 | 0
Total Revenue | (4) | (6)
Corporate, other and eliminations | Advisory leasing |  |
Disaggregation of Revenue [Line Items] |  |
Topic 606 Revenue | 0 | 0
Corporate, other and eliminations | Property management |  |
Disaggregation of Revenue [Line Items] |  |
Topic 606 Revenue | $ (4) | $ (6)

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- Definition Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. 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