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Note 1. Basis of Presentation Business Description (Details) | Dec. 31, 2017 Brokerage_Offices | Dec. 31, 2017 franchisedandcompanyownedoffices | Dec. 31, 2017 metropolitan_areas | Dec. 31, 2017 Countries | Dec. 31, 2017 employees | Dec. 31, 2016 franchisedandcompanyownedoffices | Dec. 31, 2015 franchisedandcompanyownedoffices | Dec. 31, 2014 franchisedandcompanyownedoffices
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Number of International Countries in which Entity Operates | Countries |  |  |  | 115 |  |  |  |
Number of largest metropolitan areas | metropolitan_areas |  |  | 50 |  |  |  |  |
Franchised and Company Owned |  |  |  |  |  |  |  |
Number of offices | franchisedandcompanyownedoffices |  | 14,800 |  |  |  |  |  |
Number of Independent Sales Associates | employees |  |  |  |  | 289,000 |  |  |
Company Owned Real Estate Brokerage Services |  |  |  |  |  |  |  |
Number of offices | 790 | 789 |  |  |  | 789 | 787 | 727
Number of Independent Sales Associates | employees |  |  |  |  | 50,300 |  |  |
Maximum |  |  |  |  |  |  |  |
Number of largest metropolitan areas | metropolitan_areas |  |  | 100 |  |  |  |  |

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