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Business Description (Details) | Dec. 31, 2020 employees | Dec. 31, 2020 franchisedandcompanyownedoffices | Dec. 31, 2020 Countries | Dec. 31, 2020 Brokerage_Offices | Dec. 31, 2019 franchisedandcompanyownedoffices | Dec. 31, 2018 franchisedandcompanyownedoffices | Dec. 31, 2017 franchisedandcompanyownedoffices
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Number of Countries in which Entity Operates | Countries |  |  | 116 |  |  |  |
Realogy Brokerage Group |  |  |  |  |  |  |
Number of Independent Sales Associates | 53,100 |  |  |  |  |  |
Number of offices |  | 673 |  | 670 | 713 | 755 | 789
Worldwide | Realogy Franchise and Brokerage Groups |  |  |  |  |  |  |
Number of Independent Sales Associates | 320,700 |  |  |  |  |  |
Number of offices | franchisedandcompanyownedoffices |  | 20,100 |  |  |  |  |
United States | Realogy Franchise and Brokerage Groups |  |  |  |  |  |  |
Number of Independent Sales Associates | 190,700 |  |  |  |  |  |
Number of offices | Brokerage_Offices |  |  |  | 5,800 |  |  |

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