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v3.19.3.a.u2

Franchising and Marketing Activities Change in the Number of Franchised and Brokerage Outlets (Details) $ in Millions | 12 Months Ended
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Dec. 31, 2019 USD ($) Brokerage_Offices | Dec. 31, 2019 USD ($) | Dec. 31, 2019 USD ($) franchisedandcompanyownedoffices | Dec. 31, 2018 USD ($) franchisedandcompanyownedoffices | Dec. 31, 2017 USD ($) franchisedandcompanyownedoffices
Franchised (domestic and international): |  |  |  |  |
Change in Number of Franchised and Company Owned Outlets [Roll Forward] |  |  |  |  |
Beginning balance |  |  | 15,830 | 14,039 | 13,314
Additions |  |  | 2,399 | 2,149 | 1,137
Terminations/Closures |  |  | (453) | (358) | (412)
Ending balance |  |  | 17,776 | 15,830 | 14,039
Company owned: |  |  |  |  |
Change in Number of Franchised and Company Owned Outlets [Roll Forward] |  |  |  |  |
Beginning balance |  |  | 755 | 789 | 789
Additions |  |  | 4 | 8 | 20
Terminations/Closures |  |  | (46) | (42) | (20)
Ending balance | 710 |  | 713 | 755 | 789
Franchisee Conversion Notes and Development Advance Notes |  |  |  |  |
Change in Number of Franchised and Company Owned Outlets [Roll Forward] |  |  |  |  |
Franchise conversion and development advance notes | $ | $ 134 | $ 134 | $ 134 | $ 131 |
Forgiveness of franchise conversion and development advance notes | $ |  | $ 29 |  | $ 29 | $ 25

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- Definition Amount, after allowance for credit loss, of financing receivable, classified as noncurrent. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(3)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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