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v3.20.4

Franchising and Marketing Activities (Details) $ in Millions | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2020 USD ($) franchisedandcompanyownedoffices | Dec. 31, 2019 USD ($) Countries franchisedandcompanyownedoffices | Dec. 31, 2018 USD ($) Countries franchisedandcompanyownedoffices | Dec. 31, 2020 Brokerage_Offices | Dec. 31, 2017 franchisedandcompanyownedoffices
Franchisor Disclosure [Line Items] |  |  |  |  |
Initial franchise and area development fees | $ | $ 7 | $ 9 | $ 6 |  |
Annual volume incentives from Real Estate Franchisees | $ | 63 | 50 | 52 |  |
Brand Marketing Fund Revenue | $ | $ 69 | $ 90 | $ 86 |  |
Franchised (domestic and international): |  |  |  |  |
Franchisor Disclosure [Line Items] |  |  |  |  |
Number of offices | 19,386 | 17,776 | 15,830 |  | 14,039
Franchised (domestic and international): | Century 21® |  |  |  |  |
Franchisor Disclosure [Line Items] |  |  |  |  |
Number of offices | 13,222 | 11,640 | 9,637 |  |
Franchised (domestic and international): | ERA® |  |  |  |  |
Franchisor Disclosure [Line Items] |  |  |  |  |
Number of offices | 2,318 | 2,301 | 2,331 |  |
Franchised (domestic and international): | Coldwell Banker® |  |  |  |  |
Franchisor Disclosure [Line Items] |  |  |  |  |
Number of offices | 2,263 | 2,323 | 2,380 |  |
Franchised (domestic and international): | Coldwell Banker Commercial® |  |  |  |  |
Franchisor Disclosure [Line Items] |  |  |  |  |
Number of offices | 168 | 159 | 171 |  |
Franchised (domestic and international): | Sotheby’s International Realty® |  |  |  |  |
Franchisor Disclosure [Line Items] |  |  |  |  |
Number of offices | 952 | 962 | 949 |  |
Franchised (domestic and international): | Better Homes and Gardens® Real Estate |  |  |  |  |
Franchisor Disclosure [Line Items] |  |  |  |  |
Number of offices | 389 | 391 | 362 |  |
Franchised (domestic and international): | Corcoran® |  |  |  |  |
Franchisor Disclosure [Line Items] |  |  |  |  |
Number of offices | 74 | 0 | 0 |  |
Company owned: |  |  |  |  |
Franchisor Disclosure [Line Items] |  |  |  |  |
Royalty expense | $ | $ (306) | $ (282) | $ (295) |  |
Marketing and Advertising Expense | $ | $ (10) | $ (11) | $ (11) |  |
Number of offices | 673 | 713 | 755 | 670 | 789
Company owned: | Coldwell Banker® |  |  |  |  |
Franchisor Disclosure [Line Items] |  |  |  |  |
Number of offices | 605 | 634 | 672 |  |
Company owned: | Sotheby’s International Realty® |  |  |  |  |
Franchisor Disclosure [Line Items] |  |  |  |  |
Number of offices | 39 | 37 | 41 |  |
Company owned: | Corcoran® |  |  |  |  |
Franchisor Disclosure [Line Items] |  |  |  |  |
Number of offices | 29 | 42 | 42 |  |

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