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Acquisitions (Details) $ in Millions | 6 Months Ended
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Jun. 30, 2022 USD ($) real_estate_brokerage_operations
Acquisitions [Line Items] |  |
Goodwill Acquired | $ 19 | [1]
Owned Brokerage Group |  |
Acquisitions [Line Items] |  |
Number of Businesses Acquired | real_estate_brokerage_operations | 3 |
Asset Acquisition, Consideration Transferred | $ 13 |
Asset Acquisition, Consideration Transferred, Contingent Consideration | 6 |
Goodwill Acquired | 14 | [1]
Asset Acquisition, Consideration Transferred, Other Assets | 26 |
Asset Acquisition, Consideration Transferred, Other Liabilities | 26 |
Owned Brokerage Group | Amortizable—Other (f) |  |
Acquisitions [Line Items] |  |
Finite-Lived Intangible Assets Acquired | $ 5 |
[1] | Goodwill acquired during the six months ended June 30, 2022 relates to the acquisition of three real estate brokerage operations and two title and settlement operations.

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