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Revenue from Contracts with Customers (Tables) | 12 Months Ended
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Dec. 31, 2023
Revenue from Contract with Customer [Abstract] |
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):
| Year Ended December 31, 2023
| Advisory Services |  | Global Workplace Solutions |  | Real Estate Investments |  | Corporate, other and eliminations |  | Consolidated
Topic 606 Revenue: |  |  |  |  |  |  |  |  |
Facilities management | $ | — |  |  | $ | 15,205 |  |  | $ | — |  |  | $ | — |  |  | $ | 15,205 |
Project management | — |  |  | 7,310 |  |  | — |  |  | — |  |  | 7,310 |
Advisory leasing | 3,503 |  |  | — |  |  | — |  |  | 3 |  |  | 3,506 |
Advisory sales | 1,611 |  |  | — |  |  | — |  |  | — |  |  | 1,611 |
Property management | 1,928 |  |  | — |  |  | — |  |  | (20) |  |  | 1,908 |
Valuation | 716 |  |  | — |  |  | — |  |  | — |  |  | 716 |
Commercial mortgage origination (1) | 138 |  |  | — |  |  | — |  |  | — |  |  | 138 |
Loan servicing (2) | 73 |  |  | — |  |  | — |  |  | — |  |  | 73 |
Investment management | — |  |  | — |  |  | 592 |  |  | — |  |  | 592 |
Development services | — |  |  | — |  |  | 345 |  |  | — |  |  | 345 |
Topic 606 Revenue | 7,969 |  |  | 22,515 |  |  | 937 |  |  | (17) |  |  | 31,404 |
Out of Scope of Topic 606 Revenue: |  |  |  |  |  |  |  |  |
Commercial mortgage origination | 286 |  |  | — |  |  | — |  |  | — |  |  | 286 |
Loan servicing | 244 |  |  | — |  |  | — |  |  | — |  |  | 244 |
Development services (3) | — |  |  | — |  |  | 15 |  |  | — |  |  | 15 |
Total Out of Scope of Topic 606 Revenue | 530 |  |  | — |  |  | 15 |  |  | — |  |  | 545 |
Total Revenue | $ | 8,499 |  |  | $ | 22,515 |  |  | $ | 952 |  |  | $ | (17) |  |  | $ | 31,949 |
| Year Ended December 31, 2022
| Advisory Services |  | Global Workplace Solutions |  | Real Estate Investments |  | Corporate, other and eliminations |  | Consolidated
Topic 606 Revenue: |  |  |  |  |  |  |  |  |
Facilities management | $ | — |  |  | $ | 15,201 |  |  | $ | — |  |  | $ | — |  |  | $ | 15,201 |
Project management | — |  |  | 4,650 |  |  | — |  |  | — |  |  | 4,650 |
Advisory leasing | 3,872 |  |  | — |  |  | — |  |  | 3 |  |  | 3,875 |
Advisory sales | 2,523 |  |  | — |  |  | — |  |  | — |  |  | 2,523 |
Property management | 1,849 |  |  | — |  |  | — |  |  | (19) |  |  | 1,830 |
Valuation | 765 |  |  | — |  |  | — |  |  | — |  |  | 765 |
Commercial mortgage origination (1) | 274 |  |  | — |  |  | — |  |  | — |  |  | 274 |
Loan servicing (2) | 57 |  |  | — |  |  | — |  |  | — |  |  | 57 |
Investment management | — |  |  | — |  |  | 595 |  |  | — |  |  | 595 |
Development services | — |  |  | — |  |  | 404 |  |  | — |  |  | 404 |
Topic 606 Revenue | 9,340 |  |  | 19,851 |  |  | 999 |  |  | (16) |  |  | 30,174 |
Out of Scope of Topic 606 Revenue: |  |  |  |  |  |  |  |  |
Commercial mortgage origination | 289 |  |  | — |  |  | — |  |  | — |  |  | 289 |
Loan servicing | 254 |  |  | — |  |  | — |  |  | — |  |  | 254 |
Development services (3) | — |  |  | — |  |  | 111 |  |  | — |  |  | 111 |
Total Out of Scope of Topic 606 Revenue | 543 |  |  | — |  |  | 111 |  |  | — |  |  | 654 |
Total Revenue | $ | 9,883 |  |  | $ | 19,851 |  |  | $ | 1,110 |  |  | $ | (16) |  |  | $ | 30,828 |
| Year Ended December 31, 2021
| Advisory Services |  | Global Workplace Solutions |  | Real Estate Investments |  | Corporate, other and eliminations |  | Consolidated
Topic 606 Revenue: |  |  |  |  |  |  |  |  |
Facilities management | $ | — |  |  | $ | 14,167 |  |  | $ | — |  |  | $ | — |  |  | $ | 14,167 |
Project management | — |  |  | 2,932 |  |  | — |  |  | — |  |  | 2,932 |
Advisory leasing | 3,306 |  |  | — |  |  | — |  |  | 2 |  |  | 3,308 |
Advisory sales | 2,790 |  |  | — |  |  | — |  |  | — |  |  | 2,790 |
Property management | 1,739 |  |  | — |  |  | — |  |  | (22) |  |  | 1,717 |
Valuation | 733 |  |  | — |  |  | — |  |  | — |  |  | 733 |
Commercial mortgage origination (1) | 314 |  |  | — |  |  | — |  |  | — |  |  | 314 |
Loan servicing (2) | 43 |  |  | — |  |  | — |  |  | — |  |  | 43 |
Investment management | — |  |  | — |  |  | 556 |  |  | — |  |  | 556 |
Development services | — |  |  | — |  |  | 390 |  |  | — |  |  | 390 |
Topic 606 Revenue | 8,925 |  |  | 17,099 |  |  | 946 |  |  | (20) |  |  | 26,950 |
Out of Scope of Topic 606 Revenue: |  |  |  |  |  |  |  |  |
Commercial mortgage origination | 388 |  |  | — |  |  | — |  |  | — |  |  | 388 |
Loan servicing | 262 |  |  | — |  |  | — |  |  | — |  |  | 262 |
Development services (3) | — |  |  | — |  |  | 146 |  |  | — |  |  | 146 |
Total Out of Scope of Topic 606 Revenue | 650 |  |  | — |  |  | 146 |  |  | — |  |  | 796 |
Total Revenue | $ | 9,575 |  |  | $ | 17,099 |  |  | $ | 1,092 |  |  | $ | (20) |  |  | $ | 27,746 |
________________________________________________________________________________________________________________________________________ (1)We earn fees for arranging financing for borrowers with third-party lender contacts. Such fees are in scope of Topic 606. (2)Loan servicing fees earned from servicing contracts for which we do not hold mortgage servicing rights are in scope of Topic 606. (3)Out of scope revenue for development services represents selling profit from transfers of sales-type leases in the scope of Topic 842.

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