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v3.25.3

Revenue from Contracts with Customers - Schedule of Disaggregation of Revenue from Contracts with Customers (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024
Disaggregation of Revenue [Line Items] |  |  |  |
Topic 606 Revenue | $ 10,096 | $ 8,857 | $ 28,484 | $ 24,986
Total Out of Scope of Topic 606 Revenue | 162 | 179 | 437 | 377
Total Revenue | 10,258 | 9,036 | 28,921 | 25,363
Facilities management |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Topic 606 Revenue | 5,137 | 4,638 | 15,024 | 13,263
Project management |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Topic 606 Revenue | 2,027 | 1,683 | 5,444 | 4,766
Advisory leasing |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Topic 606 Revenue | 1,145 | 974 | 3,001 | 2,582
Advisory sales |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Topic 606 Revenue | 544 | 420 | 1,364 | 1,129
Property management |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Topic 606 Revenue | 648 | 500 | 1,869 | 1,421
Valuation |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Topic 606 Revenue | 194 | 178 | 573 | 528
Other portfolio services |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Topic 606 Revenue | 90 | 96 | 267 | 282
Commercial mortgage origination |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Topic 606 Revenue | 55 | 44 | 155 | 117
Total Out of Scope of Topic 606 Revenue | 80 | 71 | 196 | 144
Loan servicing |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Topic 606 Revenue | 47 | 24 | 136 | 143
Total Out of Scope of Topic 606 Revenue | 80 | 106 | 233 | 226
Investment management |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Topic 606 Revenue | 148 | 196 | 447 | 494
Development services |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Topic 606 Revenue | 61 | 104 | 204 | 261
Total Out of Scope of Topic 606 Revenue | 2 | 2 | 8 | 7
Operating Segments |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenue | 10,258 | 9,036 | 28,921 | 25,363
Operating Segments | Advisory Services |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Topic 606 Revenue | 2,075 | 1,736 | 5,496 | 4,781
Total Out of Scope of Topic 606 Revenue | 160 | 177 | 429 | 370
Total Revenue | 2,235 | 1,913 | 5,925 | 5,151
Operating Segments | Advisory Services | Advisory leasing |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Topic 606 Revenue | 1,145 | 974 | 3,001 | 2,582
Operating Segments | Advisory Services | Advisory sales |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Topic 606 Revenue | 544 | 420 | 1,364 | 1,129
Operating Segments | Advisory Services | Property management |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Topic 606 Revenue |  |  | 0 | 0
Operating Segments | Advisory Services | Valuation |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Topic 606 Revenue | 194 | 178 | 573 | 528
Operating Segments | Advisory Services | Other portfolio services |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Topic 606 Revenue | 90 | 96 | 267 | 282
Operating Segments | Advisory Services | Commercial mortgage origination |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Topic 606 Revenue | 55 | 44 | 155 | 117
Total Out of Scope of Topic 606 Revenue | 80 | 71 | 196 | 144
Operating Segments | Advisory Services | Loan servicing |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Topic 606 Revenue | 47 | 24 | 136 | 143
Total Out of Scope of Topic 606 Revenue | 80 | 106 | 233 | 226
Operating Segments | Building Operations & Experience |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Topic 606 Revenue | 5,794 | 5,145 | 16,913 | 14,700
Total Out of Scope of Topic 606 Revenue | 0 | 0 | 0 | 0
Total Revenue | 5,794 | 5,145 | 16,913 | 14,700
Operating Segments | Building Operations & Experience | Facilities management |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Topic 606 Revenue | 5,137 | 4,638 | 15,024 | 13,263
Operating Segments | Building Operations & Experience | Property management |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Topic 606 Revenue | 657 | 507 | 1,889 | 1,437
Operating Segments | Project Management |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Topic 606 Revenue | 2,027 | 1,683 | 5,444 | 4,766
Total Revenue | 2,027 | 1,683 | 5,444 | 4,766
Operating Segments | Project Management | Project management |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Topic 606 Revenue | 2,027 | 1,683 | 5,444 | 4,766
Operating Segments | Real Estate Investments |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Topic 606 Revenue | 209 | 300 | 651 | 755
Total Out of Scope of Topic 606 Revenue | 2 | 2 | 8 | 7
Total Revenue | 211 | 302 | 659 | 762
Operating Segments | Real Estate Investments | Investment management |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Topic 606 Revenue | 148 | 196 | 447 | 494
Operating Segments | Real Estate Investments | Development services |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Topic 606 Revenue | 61 | 104 | 204 | 261
Total Out of Scope of Topic 606 Revenue | 2 | 2 | 8 | 7
Corporate, other and eliminations |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Topic 606 Revenue | (9) | (7) | (20) | (16)
Total Out of Scope of Topic 606 Revenue | 0 | 0 | 0 | 0
Total Revenue | (9) | (7) | (20) | (16)
Corporate, other and eliminations | Advisory leasing |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Topic 606 Revenue | 0 | 0 | 0 | 0
Corporate, other and eliminations | Property management |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Topic 606 Revenue | $ (9) | $ (7) | $ (20) | $ (16)

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