Acquisitions - Schedule of Fair Value of Identified Intangible Assets And Useful Lives at the Time of Acquisition (Details) - Anywhere Real Estate Inc $ in Millions	Jan. 09, 2026 USD ($)
Business Combination [Line Items]
Intangible assets	$ 3,035
Trademarks
Business Combination [Line Items]
Title plants	649
Title plants
Business Combination [Line Items]
Title plants	59
Developed technology
Business Combination [Line Items]
Finite-lived intangible assets	$ 195
Developed technology \| Minimum
Business Combination [Line Items]
Useful Life	2 years
Developed technology \| Maximum
Business Combination [Line Items]
Useful Life	5 years
Franchise agreements
Business Combination [Line Items]
Finite-lived intangible assets	$ 1,110
Useful Life	7 years
Customer relationships - Relocation
Business Combination [Line Items]
Finite-lived intangible assets	$ 30
Customer relationships - Relocation \| Minimum
Business Combination [Line Items]
Useful Life	5 years
Customer relationships - Relocation \| Maximum
Business Combination [Line Items]
Useful Life	7 years
Agent network
Business Combination [Line Items]
Finite-lived intangible assets	$ 960
Useful Life	5 years
Pending transactions and listings
Business Combination [Line Items]
Finite-lived intangible assets	$ 32
Pending transactions and listings \| Minimum
Business Combination [Line Items]
Useful Life	4 months
Pending transactions and listings \| Maximum
Business Combination [Line Items]
Useful Life	5 months

Weighted-average period of amortization for finite-lived intangible asset acquired in business combination, asset acquisition, and from joint venture formation, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Excludes goodwill and capitalized cost for software to be sold, leased, or marketed.

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