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Franchising and Marketing Activities (Tables) | 12 Months Ended
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Dec. 31, 2022
Franchising and Marketing Activities [Abstract] |
Schedule of the Number of Franchised and Company Owned Outlets in Operation [Table Text Block] | The number of franchised and company owned offices in operation are as follows:
| (Unaudited) As of December 31,
| 2022 |  | 2021 |  | 2020
Franchised (domestic and international): |  |  |  |  |
Century 21® | 13,611 |  |  | 14,246 |  |  | 13,222 |
ERA® | 2,407 |  |  | 2,355 |  |  | 2,318 |
Coldwell Banker® | 2,100 |  |  | 2,071 |  |  | 2,263 |
Coldwell Banker Commercial® | 171 |  |  | 164 |  |  | 168 |
Sotheby’s International Realty® | 1,035 |  |  | 986 |  |  | 952 |
Better Homes and Gardens® Real Estate | 418 |  |  | 411 |  |  | 389 |
Corcoran® | 82 |  |  | 122 |  |  | 74 |
Total Franchised | 19,824 |  |  | 20,355 |  |  | 19,386 |
Company owned: |  |  |  |  |
Coldwell Banker® | 606 |  |  | 605 |  |  | 605 |
Sotheby’s International Realty® | 44 |  |  | 41 |  |  | 39 |
Corcoran® | 29 |  |  | 29 |  |  | 29 |
Total Company Owned | 679 |  |  | 675 |  |  | 673 |
Schedule of the Changes in the Number of Franchised and Company Owned Outlets [Table Text Block] | The number of franchised and company owned offices (in the aggregate) changed as follows:
| (Unaudited) For the Year Ended December 31,
| 2022 |  | 2021 |  | 2020
Franchised (domestic and international): |  |  |  |  |
Beginning balance | 20,355 |  |  | 19,386 |  |  | 17,776 |
Additions | 548 |  |  | 1,583 |  |  | 2,109 |
Terminations | (1,079) |  |  | (614) |  |  | (499) |
Ending balance | 19,824 |  |  | 20,355 |  |  | 19,386 |
Company owned: |  |  |  |  |
Beginning balance | 675 |  |  | 673 |  |  | 713 |
Additions | 46 |  |  | 25 |  |  | 5 |
Closures | (42) |  |  | (23) |  |  | (45) |
Ending balance | 679 |  |  | 675 |  |  | 673 |

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- Definition Schedule of the Number of Franchised and Company Owned Outlets in Operation [Table Text Block] + References No definition available. + Details
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